From 278d5ccba361c481f2d6384a8186e58f9bbcba74 Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Wed, 31 Mar 2021 17:08:35 +0000
Subject: [PATCH 01/72] Bump y18n from 3.2.1 to 3.2.2

Bumps [y18n](https://github.com/yargs/y18n) from 3.2.1 to 3.2.2.
- [Release notes](https://github.com/yargs/y18n/releases)
- [Changelog](https://github.com/yargs/y18n/blob/master/CHANGELOG.md)
- [Commits](https://github.com/yargs/y18n/commits)

Signed-off-by: dependabot[bot] <support@github.com>
---
 package-lock.json | 23 +++--------------------
 1 file changed, 3 insertions(+), 20 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index d5c26755..69c0aeca 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9020,7 +9020,6 @@
                 "set-blocking": "^2.0.0",
                 "string-width": "^3.0.0",
                 "which-module": "^2.0.0",
-                "y18n": "^4.0.0",
                 "yargs-parser": "^13.1.2"
               }
             }
@@ -10832,11 +10831,6 @@
                 }
               }
             },
-            "y18n": {
-              "version": "3.2.1",
-              "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
-              "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE="
-            },
             "yargs": {
               "version": "8.0.2",
               "resolved": "https://registry.npmjs.org/yargs/-/yargs-8.0.2.tgz",
@@ -11042,11 +11036,6 @@
           "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
           "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ=="
         },
-        "y18n": {
-          "version": "4.0.0",
-          "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
-          "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w=="
-        },
         "yallist": {
           "version": "2.1.2",
           "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
@@ -11209,11 +11198,6 @@
                 "strip-ansi": "^3.0.1"
               }
             },
-            "y18n": {
-              "version": "3.2.1",
-              "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
-              "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE="
-            },
             "yargs-parser": {
               "version": "2.4.1",
               "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-2.4.1.tgz",
@@ -14578,10 +14562,9 @@
       "dev": true
     },
     "y18n": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
-      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
-      "dev": true
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.2.tgz",
+      "integrity": "sha512-uGZHXkHnhF0XeeAPgnKfPv1bgKAYyVvmNL1xlKsPYZPaIHxGti2hHqvOCQv71XMsLxu1QjergkqogUnms5D3YQ=="
     },
     "yallist": {
       "version": "4.0.0",

From 261ffdeb9af0d05908f3dd4ee266638142128f2a Mon Sep 17 00:00:00 2001
From: Thomas S <epostvanthomas@kpnmail.nl>
Date: Mon, 5 Apr 2021 22:58:37 +0200
Subject: [PATCH 02/72] [1038] Sender and return address set to pass
 spamfilters

---
 engine/Notifications/Email.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/engine/Notifications/Email.php b/engine/Notifications/Email.php
index 5a4a1379..cdf3ff87 100755
--- a/engine/Notifications/Email.php
+++ b/engine/Notifications/Email.php
@@ -321,6 +321,8 @@ class Email {
             $mailer->Password = $this->config['smtp_pass'];
             $mailer->SMTPSecure = $this->config['smtp_crypto'];
             $mailer->Port = $this->config['smtp_port'];
+            $mailer->Sender = $settings['company_email'];
+            $mailer->SetFrom($settings['company_email'], $settings['company_name'], FALSE); 
         }
 
         $mailer->IsHTML($this->config['mailtype'] === 'html');

From 7e57d2de904a5ce7cfc9f86069c687a4705a1c33 Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Wed, 7 Apr 2021 23:05:17 +0000
Subject: [PATCH 03/72] Bump phpseclib/phpseclib from 2.0.29 to 2.0.31

Bumps [phpseclib/phpseclib](https://github.com/phpseclib/phpseclib) from 2.0.29 to 2.0.31.
- [Release notes](https://github.com/phpseclib/phpseclib/releases)
- [Changelog](https://github.com/phpseclib/phpseclib/blob/master/CHANGELOG.md)
- [Commits](https://github.com/phpseclib/phpseclib/compare/2.0.29...2.0.31)

Signed-off-by: dependabot[bot] <support@github.com>
---
 composer.lock | 74 ++++++++++++++++++++++++++++++++-------------------
 1 file changed, 46 insertions(+), 28 deletions(-)

diff --git a/composer.lock b/composer.lock
index 864dd3a6..b2a6efe8 100644
--- a/composer.lock
+++ b/composer.lock
@@ -725,16 +725,16 @@
         },
         {
             "name": "phpseclib/phpseclib",
-            "version": "2.0.29",
+            "version": "2.0.31",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpseclib/phpseclib.git",
-                "reference": "497856a8d997f640b4a516062f84228a772a48a8"
+                "reference": "233a920cb38636a43b18d428f9a8db1f0a1a08f4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpseclib/phpseclib/zipball/497856a8d997f640b4a516062f84228a772a48a8",
-                "reference": "497856a8d997f640b4a516062f84228a772a48a8",
+                "url": "https://api.github.com/repos/phpseclib/phpseclib/zipball/233a920cb38636a43b18d428f9a8db1f0a1a08f4",
+                "reference": "233a920cb38636a43b18d428f9a8db1f0a1a08f4",
                 "shasum": ""
             },
             "require": {
@@ -742,7 +742,7 @@
             },
             "require-dev": {
                 "phing/phing": "~2.7",
-                "phpunit/phpunit": "^4.8.35|^5.7|^6.0",
+                "phpunit/phpunit": "^4.8.35|^5.7|^6.0|^9.4",
                 "squizlabs/php_codesniffer": "~2.0"
             },
             "suggest": {
@@ -826,7 +826,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-09-08T04:24:43+00:00"
+            "time": "2021-04-06T13:56:45+00:00"
         },
         {
             "name": "psr/cache",
@@ -1911,12 +1911,12 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/Roave/SecurityAdvisories.git",
-                "reference": "d5961914bf7f90e81af509b81e51450bff419815"
+                "reference": "07d2f0c0e6553fd7433f2eb7d043260d3bfd351d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Roave/SecurityAdvisories/zipball/d5961914bf7f90e81af509b81e51450bff419815",
-                "reference": "d5961914bf7f90e81af509b81e51450bff419815",
+                "url": "https://api.github.com/repos/Roave/SecurityAdvisories/zipball/07d2f0c0e6553fd7433f2eb7d043260d3bfd351d",
+                "reference": "07d2f0c0e6553fd7433f2eb7d043260d3bfd351d",
                 "shasum": ""
             },
             "conflict": {
@@ -1934,6 +1934,7 @@
                 "barrelstrength/sprout-forms": "<3.9",
                 "baserproject/basercms": ">=4,<=4.3.6|>=4.4,<4.4.1",
                 "bolt/bolt": "<3.7.1",
+                "bolt/core": "<4.1.13",
                 "brightlocal/phpwhois": "<=4.2.5",
                 "buddypress/buddypress": "<5.1.2",
                 "bugsnag/bugsnag-laravel": ">=2,<2.0.2",
@@ -1959,7 +1960,7 @@
                 "doctrine/doctrine-module": "<=0.7.1",
                 "doctrine/mongodb-odm": ">=1,<1.0.2",
                 "doctrine/mongodb-odm-bundle": ">=2,<3.0.1",
-                "doctrine/orm": ">=2,<2.4.8|>=2.5,<2.5.1",
+                "doctrine/orm": ">=2,<2.4.8|>=2.5,<2.5.1|>=2.8.3,<2.8.4",
                 "dolibarr/dolibarr": "<11.0.4",
                 "dompdf/dompdf": ">=0.6,<0.6.2",
                 "drupal/core": ">=7,<7.74|>=8,<8.8.11|>=8.9,<8.9.9|>=9,<9.0.8",
@@ -1974,14 +1975,19 @@
                 "ezsystems/ezplatform": ">=1.7,<1.7.9.1|>=1.13,<1.13.5.1|>=2.5,<2.5.4",
                 "ezsystems/ezplatform-admin-ui": ">=1.3,<1.3.5|>=1.4,<1.4.6",
                 "ezsystems/ezplatform-admin-ui-assets": ">=4,<4.2.1|>=5,<5.0.1|>=5.1,<5.1.1",
-                "ezsystems/ezplatform-kernel": ">=1,<1.0.2.1",
+                "ezsystems/ezplatform-kernel": "<=1.2.5|>=1.3,<=1.3.1",
+                "ezsystems/ezplatform-rest": ">=1.2,<=1.2.2|>=1.3,<=1.3.1",
                 "ezsystems/ezplatform-user": ">=1,<1.0.1",
-                "ezsystems/ezpublish-kernel": ">=5.3,<5.3.12.1|>=5.4,<5.4.14.2|>=6,<6.7.9.1|>=6.8,<6.13.6.3|>=7,<7.2.4.1|>=7.3,<7.3.2.1|>=7.5,<7.5.7.1",
+                "ezsystems/ezpublish-kernel": "<=6.13.8.1|>=7,<=7.5.15.1",
                 "ezsystems/ezpublish-legacy": ">=5.3,<5.3.12.6|>=5.4,<5.4.14.2|>=2011,<2017.12.7.3|>=2018.6,<2018.6.1.4|>=2018.9,<2018.9.1.3|>=2019.3,<2019.3.5.1",
                 "ezsystems/platform-ui-assets-bundle": ">=4.2,<4.2.3",
                 "ezsystems/repository-forms": ">=2.3,<2.3.2.1",
                 "ezyang/htmlpurifier": "<4.1.1",
+                "facade/ignition": "<1.16.14|>=2,<2.4.2|>=2.5,<2.5.2",
                 "firebase/php-jwt": "<2",
+                "flarum/sticky": ">=0.1-beta.14,<=0.1-beta.15",
+                "flarum/tags": "<=0.1-beta.13",
+                "fluidtypo3/vhs": "<5.1.1",
                 "fooman/tcpdf": "<6.2.22",
                 "fossar/tcpdf-parser": "<6.2.22",
                 "friendsofsymfony/oauth2-php": "<1.3",
@@ -1998,18 +2004,20 @@
                 "guzzlehttp/guzzle": ">=4-rc.2,<4.2.4|>=5,<5.3.1|>=6,<6.2.1",
                 "illuminate/auth": ">=4,<4.0.99|>=4.1,<=4.1.31|>=4.2,<=4.2.22|>=5,<=5.0.35|>=5.1,<=5.1.46|>=5.2,<=5.2.45|>=5.3,<=5.3.31|>=5.4,<=5.4.36|>=5.5,<5.5.10",
                 "illuminate/cookie": ">=4,<=4.0.11|>=4.1,<=4.1.99999|>=4.2,<=4.2.99999|>=5,<=5.0.99999|>=5.1,<=5.1.99999|>=5.2,<=5.2.99999|>=5.3,<=5.3.99999|>=5.4,<=5.4.99999|>=5.5,<=5.5.49|>=5.6,<=5.6.99999|>=5.7,<=5.7.99999|>=5.8,<=5.8.99999|>=6,<6.18.31|>=7,<7.22.4",
-                "illuminate/database": ">=4,<4.0.99|>=4.1,<4.1.29|>=5.5,<=5.5.44|>=6,<6.18.34|>=7,<7.23.2",
+                "illuminate/database": "<6.20.14|>=7,<7.30.4|>=8,<8.24",
                 "illuminate/encryption": ">=4,<=4.0.11|>=4.1,<=4.1.31|>=4.2,<=4.2.22|>=5,<=5.0.35|>=5.1,<=5.1.46|>=5.2,<=5.2.45|>=5.3,<=5.3.31|>=5.4,<=5.4.36|>=5.5,<5.5.40|>=5.6,<5.6.15",
                 "illuminate/view": ">=7,<7.1.2",
+                "impresscms/impresscms": "<=1.4.2",
                 "ivankristianto/phpwhois": "<=4.3",
                 "james-heinrich/getid3": "<1.9.9",
+                "joomla/archive": "<1.1.10",
                 "joomla/session": "<1.3.1",
                 "jsmitty12/phpwhois": "<5.1",
                 "kazist/phpwhois": "<=4.2.6",
                 "kitodo/presentation": "<3.1.2",
                 "kreait/firebase-php": ">=3.2,<3.8.1",
                 "la-haute-societe/tcpdf": "<6.2.22",
-                "laravel/framework": ">=4,<4.0.99|>=4.1,<=4.1.99999|>=4.2,<=4.2.99999|>=5,<=5.0.99999|>=5.1,<=5.1.99999|>=5.2,<=5.2.99999|>=5.3,<=5.3.99999|>=5.4,<=5.4.99999|>=5.5,<=5.5.49|>=5.6,<=5.6.99999|>=5.7,<=5.7.99999|>=5.8,<=5.8.99999|>=6,<6.18.34|>=7,<7.23.2",
+                "laravel/framework": "<6.20.14|>=7,<7.30.4|>=8,<8.24",
                 "laravel/socialite": ">=1,<1.0.99|>=2,<2.0.10",
                 "league/commonmark": "<0.18.3",
                 "librenms/librenms": "<1.53",
@@ -2019,18 +2027,20 @@
                 "magento/magento1ee": ">=1,<1.14.4.3",
                 "magento/product-community-edition": ">=2,<2.2.10|>=2.3,<2.3.2-p.2",
                 "marcwillmann/turn": "<0.3.3",
+                "mautic/core": "<3.3.2|= 2.13.1",
                 "mediawiki/core": ">=1.27,<1.27.6|>=1.29,<1.29.3|>=1.30,<1.30.2|>=1.31,<1.31.9|>=1.32,<1.32.6|>=1.32.99,<1.33.3|>=1.33.99,<1.34.3|>=1.34.99,<1.35",
                 "mittwald/typo3_forum": "<1.2.1",
                 "monolog/monolog": ">=1.8,<1.12",
+                "moodle/moodle": "<3.5.17|>=3.7,<3.7.9|>=3.8,<3.8.8|>=3.9,<3.9.5|>=3.10,<3.10.2",
                 "namshi/jose": "<2.2",
                 "nette/application": ">=2,<2.0.19|>=2.1,<2.1.13|>=2.2,<2.2.10|>=2.3,<2.3.14|>=2.4,<2.4.16|>=3,<3.0.6",
                 "nette/nette": ">=2,<2.0.19|>=2.1,<2.1.13",
                 "nystudio107/craft-seomatic": "<3.3",
                 "nzo/url-encryptor-bundle": ">=4,<4.3.2|>=5,<5.0.1",
-                "october/backend": ">=1.0.319,<1.0.470",
+                "october/backend": "<1.1.2",
                 "october/cms": "= 1.0.469|>=1.0.319,<1.0.469",
                 "october/october": ">=1.0.319,<1.0.466",
-                "october/rain": ">=1.0.319,<1.0.468",
+                "october/rain": "<1.0.472|>=1.1,<1.1.2",
                 "onelogin/php-saml": "<2.10.4",
                 "oneup/uploader-bundle": "<1.9.3|>=2,<2.1.5",
                 "openid/php-openid": "<2.3",
@@ -2043,23 +2053,26 @@
                 "paragonie/random_compat": "<2",
                 "passbolt/passbolt_api": "<2.11",
                 "paypal/merchant-sdk-php": "<3.12",
-                "pear/archive_tar": "<1.4.11",
+                "pear/archive_tar": "<1.4.12",
                 "personnummer/personnummer": "<3.0.2",
                 "phpfastcache/phpfastcache": ">=5,<5.0.13",
                 "phpmailer/phpmailer": "<6.1.6",
                 "phpmussel/phpmussel": ">=1,<1.6",
                 "phpmyadmin/phpmyadmin": "<4.9.6|>=5,<5.0.3",
                 "phpoffice/phpexcel": "<1.8.2",
-                "phpoffice/phpspreadsheet": "<1.8",
+                "phpoffice/phpspreadsheet": "<1.16",
+                "phpseclib/phpseclib": "<2.0.31|>=3,<3.0.7",
                 "phpunit/phpunit": ">=4.8.19,<4.8.28|>=5.0.10,<5.6.3",
                 "phpwhois/phpwhois": "<=4.2.5",
                 "phpxmlrpc/extras": "<0.6.1",
-                "pimcore/pimcore": "<6.3",
+                "pimcore/pimcore": "<6.8.8",
                 "pocketmine/pocketmine-mp": "<3.15.4",
+                "pressbooks/pressbooks": "<5.18",
                 "prestashop/autoupgrade": ">=4,<4.10.1",
                 "prestashop/contactform": ">1.0.1,<4.3",
                 "prestashop/gamification": "<2.3.2",
-                "prestashop/productcomments": ">=4,<4.2",
+                "prestashop/productcomments": ">=4,<4.2.1",
+                "prestashop/ps_emailsubscription": "<2.6.1",
                 "prestashop/ps_facetedsearch": "<3.4.1",
                 "privatebin/privatebin": "<1.2.2|>=1.3,<1.3.2",
                 "propel/propel": ">=2-alpha.1,<=2-alpha.7",
@@ -2073,8 +2086,8 @@
                 "scheb/two-factor-bundle": ">=0,<3.26|>=4,<4.11",
                 "sensiolabs/connect": "<4.2.3",
                 "serluck/phpwhois": "<=4.2.6",
-                "shopware/core": "<=6.3.2",
-                "shopware/platform": "<=6.3.2",
+                "shopware/core": "<=6.3.4",
+                "shopware/platform": "<=6.3.5.1",
                 "shopware/shopware": "<5.6.9",
                 "silverstripe/admin": ">=1.0.3,<1.0.4|>=1.1,<1.1.1",
                 "silverstripe/assets": ">=1,<1.4.7|>=1.5,<1.5.2",
@@ -2094,8 +2107,9 @@
                 "simplesamlphp/simplesamlphp-module-infocard": "<1.0.1",
                 "simplito/elliptic-php": "<1.0.6",
                 "slim/slim": "<2.6",
-                "smarty/smarty": "<3.1.33",
+                "smarty/smarty": "<3.1.39",
                 "socalnick/scn-social-auth": "<1.15.2",
+                "socialiteproviders/steam": "<1.1",
                 "spoonity/tcpdf": "<6.2.22",
                 "squizlabs/php_codesniffer": ">=1,<2.8.1|>=3,<3.0.1",
                 "ssddanbrown/bookstack": "<0.29.2",
@@ -2109,6 +2123,7 @@
                 "sylius/resource-bundle": "<1.3.14|>=1.4,<1.4.7|>=1.5,<1.5.2|>=1.6,<1.6.4",
                 "sylius/sylius": "<1.6.9|>=1.7,<1.7.9|>=1.8,<1.8.3",
                 "symbiote/silverstripe-multivaluefield": ">=3,<3.0.99",
+                "symbiote/silverstripe-queuedjobs": ">=3,<3.0.2|>=3.1,<3.1.4|>=4,<4.0.7|>=4.1,<4.1.2|>=4.2,<4.2.4|>=4.3,<4.3.3|>=4.4,<4.4.3|>=4.5,<4.5.1|>=4.6,<4.6.4",
                 "symbiote/silverstripe-versionedfiles": "<=2.0.3",
                 "symfony/cache": ">=3.1,<3.4.35|>=4,<4.2.12|>=4.3,<4.3.8",
                 "symfony/dependency-injection": ">=2,<2.0.17|>=2.7,<2.7.51|>=2.8,<2.8.50|>=3,<3.4.26|>=4,<4.1.12|>=4.2,<4.2.7",
@@ -2145,8 +2160,10 @@
                 "titon/framework": ">=0,<9.9.99",
                 "truckersmp/phpwhois": "<=4.3.1",
                 "twig/twig": "<1.38|>=2,<2.7",
-                "typo3/cms": ">=6.2,<6.2.30|>=7,<7.6.32|>=8,<8.7.38|>=9,<9.5.23|>=10,<10.4.10",
-                "typo3/cms-core": ">=8,<8.7.38|>=9,<9.5.23|>=10,<10.4.10",
+                "typo3/cms": ">=6.2,<6.2.30|>=7,<7.6.32|>=8,<8.7.38|>=9,<9.5.25|>=10,<10.4.14|>=11,<11.1.1",
+                "typo3/cms-backend": ">=7,<=7.6.50|>=8,<=8.7.39|>=9,<=9.5.24|>=10,<=10.4.13|>=11,<=11.1",
+                "typo3/cms-core": ">=6.2,<=6.2.56|>=7,<=7.6.50|>=8,<=8.7.39|>=9,<9.5.25|>=10,<10.4.14|>=11,<11.1.1",
+                "typo3/cms-form": ">=8,<=8.7.39|>=9,<=9.5.24|>=10,<=10.4.13|>=11,<=11.1",
                 "typo3/flow": ">=1,<1.0.4|>=1.1,<1.1.1|>=2,<2.0.1|>=2.3,<2.3.16|>=3,<3.0.10|>=3.1,<3.1.7|>=3.2,<3.2.7|>=3.3,<3.3.5",
                 "typo3/neos": ">=1.1,<1.1.3|>=1.2,<1.2.13|>=2,<2.0.4",
                 "typo3/phar-stream-wrapper": ">=1,<2.1.1|>=3,<3.1.1",
@@ -2154,6 +2171,7 @@
                 "ua-parser/uap-php": "<3.8",
                 "usmanhalalit/pixie": "<1.0.3|>=2,<2.0.2",
                 "verot/class.upload.php": "<=1.0.3|>=2,<=2.0.4",
+                "vrana/adminer": "<4.7.9",
                 "wallabag/tcpdf": "<6.2.22",
                 "willdurand/js-translation-bundle": "<2.1.1",
                 "yii2mod/yii2-cms": "<1.9.2",
@@ -2220,7 +2238,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-12-08T15:02:56+00:00"
+            "time": "2021-04-07T21:01:39+00:00"
         },
         {
             "name": "sebastian/code-unit-reverse-lookup",
@@ -2969,12 +2987,12 @@
             "version": "1.9.1",
             "source": {
                 "type": "git",
-                "url": "https://github.com/webmozart/assert.git",
+                "url": "https://github.com/webmozarts/assert.git",
                 "reference": "bafc69caeb4d49c39fd0779086c03a3738cbb389"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/webmozart/assert/zipball/bafc69caeb4d49c39fd0779086c03a3738cbb389",
+                "url": "https://api.github.com/repos/webmozarts/assert/zipball/bafc69caeb4d49c39fd0779086c03a3738cbb389",
                 "reference": "bafc69caeb4d49c39fd0779086c03a3738cbb389",
                 "shasum": ""
             },

From f6437ce1bce117224a8449228ecf91a953b8e779 Mon Sep 17 00:00:00 2001
From: Vitor Mattos <vitor@php.rio>
Date: Fri, 16 Apr 2021 14:08:59 -0300
Subject: [PATCH 04/72] Update pt_BR translations

---
 .../language/portuguese-br/date_lang.php      | 28 ++++-----
 .../portuguese-br/form_validation_lang.php    | 60 +++++++++---------
 .../language/portuguese-br/imglib_lang.php    | 36 +++++------
 .../portuguese-br/pagination_lang.php         |  4 +-
 .../portuguese-br/translations_lang.php       | 62 +++++++++----------
 .../language/portuguese-br/upload_lang.php    | 32 +++++-----
 6 files changed, 111 insertions(+), 111 deletions(-)

diff --git a/application/language/portuguese-br/date_lang.php b/application/language/portuguese-br/date_lang.php
index aa796b89..6799832f 100644
--- a/application/language/portuguese-br/date_lang.php
+++ b/application/language/portuguese-br/date_lang.php
@@ -37,20 +37,20 @@
  */
 defined('BASEPATH') OR exit('No direct script access allowed');
 
-$lang['date_year'] = 'Year';
-$lang['date_years'] = 'Years';
-$lang['date_month'] = 'Month';
-$lang['date_months'] = 'Months';
-$lang['date_week'] = 'Week';
-$lang['date_weeks'] = 'Weeks';
-$lang['date_day'] = 'Day';
-$lang['date_days'] = 'Days';
-$lang['date_hour'] = 'Hour';
-$lang['date_hours'] = 'Hours';
-$lang['date_minute'] = 'Minute';
-$lang['date_minutes'] = 'Minutes';
-$lang['date_second'] = 'Second';
-$lang['date_seconds'] = 'Seconds';
+$lang['date_year'] = 'Ano';
+$lang['date_years'] = 'Anos';
+$lang['date_month'] = 'Mês';
+$lang['date_months'] = 'Meses';
+$lang['date_week'] = 'Semana';
+$lang['date_weeks'] = 'Semanas';
+$lang['date_day'] = 'Dia';
+$lang['date_days'] = 'Dias';
+$lang['date_hour'] = 'Hora';
+$lang['date_hours'] = 'Horas';
+$lang['date_minute'] = 'Minuto';
+$lang['date_minutes'] = 'Minutos';
+$lang['date_second'] = 'Segundo';
+$lang['date_seconds'] = 'Segundos';
 
 $lang['UM12']	= '(UTC -12:00) Baker/Howland Island';
 $lang['UM11']	= '(UTC -11:00) Niue';
diff --git a/application/language/portuguese-br/form_validation_lang.php b/application/language/portuguese-br/form_validation_lang.php
index bdb02544..d17f0ef0 100644
--- a/application/language/portuguese-br/form_validation_lang.php
+++ b/application/language/portuguese-br/form_validation_lang.php
@@ -37,33 +37,33 @@
  */
 defined('BASEPATH') OR exit('No direct script access allowed');
 
-$lang['form_validation_required']		= 'The {field} field is required.';
-$lang['form_validation_isset']			= 'The {field} field must have a value.';
-$lang['form_validation_valid_email']		= 'The {field} field must contain a valid email address.';
-$lang['form_validation_valid_emails']		= 'The {field} field must contain all valid email addresses.';
-$lang['form_validation_valid_url']		= 'The {field} field must contain a valid URL.';
-$lang['form_validation_valid_ip']		= 'The {field} field must contain a valid IP.';
-$lang['form_validation_valid_base64']		= 'The {field} field must contain a valid Base64 string.';
-$lang['form_validation_min_length']		= 'The {field} field must be at least {param} characters in length.';
-$lang['form_validation_max_length']		= 'The {field} field cannot exceed {param} characters in length.';
-$lang['form_validation_exact_length']		= 'The {field} field must be exactly {param} characters in length.';
-$lang['form_validation_alpha']			= 'The {field} field may only contain alphabetical characters.';
-$lang['form_validation_alpha_numeric']		= 'The {field} field may only contain alpha-numeric characters.';
-$lang['form_validation_alpha_numeric_spaces']	= 'The {field} field may only contain alpha-numeric characters and spaces.';
-$lang['form_validation_alpha_dash']		= 'The {field} field may only contain alpha-numeric characters, underscores, and dashes.';
-$lang['form_validation_numeric']		= 'The {field} field must contain only numbers.';
-$lang['form_validation_is_numeric']		= 'The {field} field must contain only numeric characters.';
-$lang['form_validation_integer']		= 'The {field} field must contain an integer.';
-$lang['form_validation_regex_match']		= 'The {field} field is not in the correct format.';
-$lang['form_validation_matches']		= 'The {field} field does not match the {param} field.';
-$lang['form_validation_differs']		= 'The {field} field must differ from the {param} field.';
-$lang['form_validation_is_unique'] 		= 'The {field} field must contain a unique value.';
-$lang['form_validation_is_natural']		= 'The {field} field must only contain digits.';
-$lang['form_validation_is_natural_no_zero']	= 'The {field} field must only contain digits and must be greater than zero.';
-$lang['form_validation_decimal']		= 'The {field} field must contain a decimal number.';
-$lang['form_validation_less_than']		= 'The {field} field must contain a number less than {param}.';
-$lang['form_validation_less_than_equal_to']	= 'The {field} field must contain a number less than or equal to {param}.';
-$lang['form_validation_greater_than']		= 'The {field} field must contain a number greater than {param}.';
-$lang['form_validation_greater_than_equal_to']	= 'The {field} field must contain a number greater than or equal to {param}.';
-$lang['form_validation_error_message_not_set']	= 'Unable to access an error message corresponding to your field name {field}.';
-$lang['form_validation_in_list']		= 'The {field} field must be one of: {param}.';
+$lang['form_validation_required']		= 'O campo {field} é obrigatório.';
+$lang['form_validation_isset']			= 'O campo {field} deve ter um valor.';
+$lang['form_validation_valid_email']		= 'O campo {field} deve conter um endereço de e-mail válido.';
+$lang['form_validation_valid_emails']		= 'O campo {field} deve conter todos os endereços de e-mail válidos.';
+$lang['form_validation_valid_url']		= 'O campo {field} deve conter um URL válido.';
+$lang['form_validation_valid_ip']		= 'O campo {field} deve conter um IP válido.';
+$lang['form_validation_valid_base64']		= 'O campo {field} deve conter uma string Base64 válida.';
+$lang['form_validation_min_length']		= 'O campo {field} deve ter pelo menos {param} caracteres de comprimento.';
+$lang['form_validation_max_length']		= 'O campo {field} não pode exceder {param} caracteres de comprimento.';
+$lang['form_validation_exact_length']		= 'O campo {field} deve ter exatamente {param} caracteres de comprimento.';
+$lang['form_validation_alpha']			= 'O campo {field} pode conter apenas caracteres alfabéticos.';
+$lang['form_validation_alpha_numeric']		= 'O campo {field} pode conter apenas caracteres alfanuméricos.';
+$lang['form_validation_alpha_numeric_spaces']	= 'O campo {field} pode conter apenas caracteres alfanuméricos e espaços.';
+$lang['form_validation_alpha_dash']		= 'O campo {field} pode conter apenas caracteres alfanuméricos, sublinhados e travessões.';
+$lang['form_validation_numeric']		= 'O campo {field} deve conter apenas números.';
+$lang['form_validation_is_numeric']		= 'O campo {field} deve conter apenas caracteres numéricos.';
+$lang['form_validation_integer']		= 'O campo {field} deve conter um número inteiro.';
+$lang['form_validation_regex_match']		= 'O campo {field} não está no formato correto.';
+$lang['form_validation_matches']		= 'O campo {field} não corresponde ao campo {param}.';
+$lang['form_validation_differs']		= 'O campo {field} deve ser diferente do campo {param}.';
+$lang['form_validation_is_unique'] 		= 'O campo {field} deve conter um valor único.';
+$lang['form_validation_is_natural']		= 'O campo {field} deve conter apenas dígitos.';
+$lang['form_validation_is_natural_no_zero']	= 'O campo {field} deve conter apenas dígitos e deve ser maior que zero.';
+$lang['form_validation_decimal']		= 'O campo {field} deve conter um número decimal.';
+$lang['form_validation_less_than']		= 'O campo {field} deve conter um número menor que {param}.';
+$lang['form_validation_less_than_equal_to']	= 'O campo {field} deve conter um número menor ou igual a {param}.';
+$lang['form_validation_greater_than']		= 'O campo {field} deve conter um número maior que {param}.';
+$lang['form_validation_greater_than_equal_to']	= 'O campo {field} deve conter um número maior ou igual a {param}.';
+$lang['form_validation_error_message_not_set']	= 'Incapaz de acessar uma mensagem de erro correspondente ao seu nome de campo {field}.';
+$lang['form_validation_in_list']		= 'O campo {field} deve ser um dos seguintes: {param}.';
diff --git a/application/language/portuguese-br/imglib_lang.php b/application/language/portuguese-br/imglib_lang.php
index c34b087c..75909f06 100644
--- a/application/language/portuguese-br/imglib_lang.php
+++ b/application/language/portuguese-br/imglib_lang.php
@@ -37,21 +37,21 @@
  */
 defined('BASEPATH') OR exit('No direct script access allowed');
 
-$lang['imglib_source_image_required'] = 'You must specify a source image in your preferences.';
-$lang['imglib_gd_required'] = 'The GD image library is required for this feature.';
-$lang['imglib_gd_required_for_props'] = 'Your server must support the GD image library in order to determine the image properties.';
-$lang['imglib_unsupported_imagecreate'] = 'Your server does not support the GD function required to process this type of image.';
-$lang['imglib_gif_not_supported'] = 'GIF images are often not supported due to licensing restrictions. You may have to use JPG or PNG images instead.';
-$lang['imglib_jpg_not_supported'] = 'JPG images are not supported.';
-$lang['imglib_png_not_supported'] = 'PNG images are not supported.';
-$lang['imglib_jpg_or_png_required'] = 'The image resize protocol specified in your preferences only works with JPEG or PNG image types.';
-$lang['imglib_copy_error'] = 'An error was encountered while attempting to replace the file. Please make sure your file directory is writable.';
-$lang['imglib_rotate_unsupported'] = 'Image rotation does not appear to be supported by your server.';
-$lang['imglib_libpath_invalid'] = 'The path to your image library is not correct. Please set the correct path in your image preferences.';
-$lang['imglib_image_process_failed'] = 'Image processing failed. Please verify that your server supports the chosen protocol and that the path to your image library is correct.';
-$lang['imglib_rotation_angle_required'] = 'An angle of rotation is required to rotate the image.';
-$lang['imglib_invalid_path'] = 'The path to the image is not correct.';
-$lang['imglib_invalid_image'] = 'The provided image is not valid.';
-$lang['imglib_copy_failed'] = 'The image copy routine failed.';
-$lang['imglib_missing_font'] = 'Unable to find a font to use.';
-$lang['imglib_save_failed'] = 'Unable to save the image. Please make sure the image and file directory are writable.';
+$lang['imglib_source_image_required'] = 'Você deve especificar uma imagem de origem em suas preferências.';
+$lang['imglib_gd_required'] = 'A biblioteca de imagens GD é necessária para este recurso.';
+$lang['imglib_gd_required_for_props'] = 'Seu servidor deve suportar a biblioteca de imagens GD para determinar as propriedades da imagem.';
+$lang['imglib_unsupported_imagecreate'] = 'Seu servidor não suporta a função GD necessária para processar este tipo de imagem.';
+$lang['imglib_gif_not_supported'] = 'Muitas vezes, as imagens GIF não são suportadas devido a restrições de licenciamento. Pode ser necessário usar imagens JPG ou PNG.';
+$lang['imglib_jpg_not_supported'] = 'Imagens JPG não são compatíveis.';
+$lang['imglib_png_not_supported'] = 'Imagens PNG não são suportadas.';
+$lang['imglib_jpg_or_png_required'] = 'O protocolo de redimensionamento de imagem especificado em suas preferências funciona apenas com os tipos de imagem JPEG ou PNG.';
+$lang['imglib_copy_error'] = 'Foi encontrado um erro ao tentar substituir o arquivo. Certifique-se de que seu diretório de arquivos seja gravável.';
+$lang['imglib_rotate_unsupported'] = 'A rotação da imagem não parece ser compatível com o seu servidor.';
+$lang['imglib_libpath_invalid'] = 'O caminho para sua biblioteca de imagens não está correto. Defina o caminho correto em suas preferências de imagem.';
+$lang['imglib_image_process_failed'] = 'O processamento da imagem falhou. Verifique se o seu servidor suporta o protocolo escolhido e se o caminho para a sua biblioteca de imagens está correto.';
+$lang['imglib_rotation_angle_required'] = 'É necessário um ângulo de rotação para girar a imagem.';
+$lang['imglib_invalid_path'] = 'O caminho para a imagem não está correto.';
+$lang['imglib_invalid_image'] = 'A imagem fornecida não é válida.';
+$lang['imglib_copy_failed'] = 'A rotina de cópia da imagem falhou.';
+$lang['imglib_missing_font'] = 'Incapaz de encontrar uma fonte para usar.';
+$lang['imglib_save_failed'] = 'Não foi possível salvar a imagem. Certifique-se de que a imagem e o diretório do arquivo sejam graváveis.';
diff --git a/application/language/portuguese-br/pagination_lang.php b/application/language/portuguese-br/pagination_lang.php
index 1d113dfb..eaab3bd5 100644
--- a/application/language/portuguese-br/pagination_lang.php
+++ b/application/language/portuguese-br/pagination_lang.php
@@ -37,7 +37,7 @@
  */
 defined('BASEPATH') OR exit('No direct script access allowed');
 
-$lang['pagination_first_link'] = '&lsaquo; First';
+$lang['pagination_first_link'] = '&lsaquo; Primeira';
 $lang['pagination_next_link'] = '&gt;';
 $lang['pagination_prev_link'] = '&lt;';
-$lang['pagination_last_link'] = 'Last &rsaquo;';
+$lang['pagination_last_link'] = 'Última &rsaquo;';
diff --git a/application/language/portuguese-br/translations_lang.php b/application/language/portuguese-br/translations_lang.php
index 13e8810e..35718cfc 100755
--- a/application/language/portuguese-br/translations_lang.php
+++ b/application/language/portuguese-br/translations_lang.php
@@ -21,8 +21,8 @@ $lang['address'] = 'Endereço';
 $lang['city'] = 'Cidade';
 $lang['zip_code'] = 'CEP';
 $lang['notes'] = 'Observações.';
-$lang['language'] = 'Language';
-$lang['no_language'] = 'No language';
+$lang['language'] = 'Idioma';
+$lang['no_language'] = 'Sem idioma';
 $lang['fields_are_required'] = '* campos obrigatórios';
 $lang['appointment_confirmation'] = 'Confirmar Agendamento';
 $lang['confirm'] = 'Comfirmar';
@@ -53,8 +53,8 @@ $lang['appointment_added_to_google_calendar'] = 'O seu evento foi adicionado a s
 $lang['view_appointment_in_google_calendar'] = 'Clique aqui para ver os seus compromissos no "Google Calendar".';
 $lang['appointment_added_to_your_plan'] = 'Um novo evento foi adicionado ao seu plano.';
 $lang['appointment_link_description'] = 'Para fazer alterações click no link.';
-$lang['appointment_locked'] = 'Modification impossible.';
-$lang['appointment_locked_message'] = 'The appointment cannot be changed less than {$limit} hours in advance.';
+$lang['appointment_locked'] = 'Modificação impossível.';
+$lang['appointment_locked_message'] = 'O compromisso não pode ser alterado com menos de {$limit} horas de antecedência.';
 $lang['appointment_not_found'] = 'Agendamento não encontrado.';
 $lang['appointment_does_not_exist_in_db'] = 'O agendamento não existe na base de dados.';
 $lang['display_calendar'] = 'Mostrar Calendário';
@@ -65,7 +65,7 @@ $lang['log_out'] = 'Sair';
 $lang['synchronize'] = 'Sincronizar';
 $lang['enable_sync'] = 'Habilitar Sincronização';
 $lang['disable_sync'] = 'Desabiltar Sincronização';
-$lang['disable_sync_prompt'] = 'Are you sure that you want to disable the calendar synchronization?';
+$lang['disable_sync_prompt'] = 'Tem certeza de que deseja desativar a sincronização do calendário?';
 $lang['reload'] = 'Atualizar';
 $lang['appointment'] = 'Agenda';
 $lang['unavailable'] = 'Indisponível';
@@ -158,7 +158,7 @@ $lang['sunday'] = 'Domingo';
 $lang['breaks'] = 'Pausas';
 $lang['add_breaks_during_each_day'] = 'Adicionar as pausas de trabalho durante cada dia. Durante os intervalos o atendente não aceitará quaisquer compromissos.';
 $lang['day'] = 'Dia';
-$lang['days'] = 'Days';
+$lang['days'] = 'Dias';
 $lang['actions'] = 'Ações';
 $lang['reset_working_plan_hint'] = 'Repor o plano de trabalho para os valores padrões.';
 $lang['company_name'] = 'Nome da empresa';
@@ -281,8 +281,8 @@ $lang['date_format'] = 'Formato da Data';
 $lang['date_format_hint'] = 'Altera o formato de visualização da Data (D - Data, M - Mes, Y - Ano).';
 $lang['time_format'] = 'Formato da Hora';
 $lang['time_format_hint'] = 'Altera o formato em que a hora é apresentada (H - Horas, M - Minutos).';
-$lang['first_weekday'] = 'First day of week';
-$lang['first_weekday_hint'] = 'Set the first day of the calendar week.';
+$lang['first_weekday'] = 'Primeiro dia da semana';
+$lang['first_weekday_hint'] = 'Defina o primeiro dia da semana do calendário.';
 $lang['google_analytics_code_hint'] = 'Adicione o seu ID do Google Analytics para ser incluido na pagina de agendamentos.';
 $lang['availabilities_type'] = 'Tipo de disponibilidade';
 $lang['flexible'] = 'Flexível';
@@ -306,27 +306,27 @@ $lang['delete_personal_information_hint'] = 'Deletar toda informação pessoal d
 $lang['delete_personal_information'] = 'Deletar Informação Pessoal';
 $lang['delete_personal_information_prompt'] = 'Tem certeza que deja deletar suas informações pessoais? Essa ação não pode ser desfeita.';
 $lang['location'] = 'Location';
-$lang['working_plan_exception'] = 'Working Plan Exception';
-$lang['working_plan_exceptions'] = 'Working Plan Exceptions';
-$lang['working_plan_exceptions_hint'] = 'Add a working plan exception day, outside the working plan.';
-$lang['new_working_plan_exception_title'] = 'New Working Plan Exception';
-$lang['working_plan_exception_saved'] = 'Working plan exception saved successfully.';
-$lang['working_plan_exception_deleted'] = 'Working plan exception deleted successfully.';
-$lang['add_working_plan_exceptions_during_each_day'] = 'Add working plan exceptions, outside the working plan.';
-$lang['add_working_plan_exception'] = 'Add Working Plan Exception';
-$lang['require_phone_number'] = 'Require phone number';
-$lang['require_phone_number_hint'] = 'When enabled, customers and users will need to enter the customer\'s phone number when booking an appointment';
-$lang['check_spam_folder'] = 'Please check your spam folder if the email does not arrive within a few minutes.';
-$lang['api_token_hint'] = 'Set a secret token in order to enable the token based authentication of the Easy!Appointments API.';
-$lang['timezone'] = 'Timezone';
-$lang['overwrite_existing_working_plans'] = 'This will overwrite the existing provider working plans, are you sure that you want to continue?';
-$lang['working_plans_got_updated'] = 'All the working plans got updated.';
-$lang['apply_to_all_providers'] = 'Apply To All Providers';
-$lang['display_any_provider'] = 'Display Any Provider Option';
-$lang['display_any_provider_hint'] = 'The booking page will get an additional option that allows customers to book without specifying a provider.';
-$lang['load_more'] = 'Load More';
-$lang['list'] = 'List';
-$lang['default'] = 'Default';
-$lang['table'] = 'Table';
-$lang['date'] = 'Date';
+$lang['working_plan_exception'] = 'Exceção do plano de trabalho';
+$lang['working_plan_exceptions'] = 'Exceções do plano de trabalho';
+$lang['working_plan_exceptions_hint'] = 'Adicione um dia de exceção do plano de trabalho, fora do plano de trabalho.';
+$lang['new_working_plan_exception_title'] = 'Nova Exceção de Plano de Trabalho';
+$lang['working_plan_exception_saved'] = 'Exceção do plano de trabalho salva com sucesso.';
+$lang['working_plan_exception_deleted'] = 'Exceção do plano de trabalho excluída com sucesso.';
+$lang['add_working_plan_exceptions_during_each_day'] = 'Adicione exceções ao plano de trabalho, fora do plano de trabalho.';
+$lang['add_working_plan_exception'] = 'Adicionar exceção de plano de trabalho';
+$lang['require_phone_number'] = 'Requer número de telefone';
+$lang['require_phone_number_hint'] = 'Quando ativado, os clientes e usuários precisarão inserir o número de telefone do cliente ao reservar um compromisso';
+$lang['check_spam_folder'] = 'Verifique sua pasta de spam se o e-mail não chegar em alguns minutos.';
+$lang['api_token_hint'] = 'Defina um token secreto para habilitar a autenticação baseada em token da API Easy!Appointments.';
+$lang['timezone'] = 'Fuso horário';
+$lang['overwrite_existing_working_plans'] = 'Isso substituirá os planos de trabalho dos fornecedores existentes. Tem certeza de que deseja continuar?';
+$lang['working_plans_got_updated'] = 'Todos os planos de trabalho foram atualizados.';
+$lang['apply_to_all_providers'] = 'Aplicar a todos os fornecedores';
+$lang['display_any_provider'] = 'Exibir qualquer opção de fornecedor';
+$lang['display_any_provider_hint'] = 'A página de reserva terá uma opção adicional que permite aos clientes fazerem a reserva sem especificar um fornecedor.';
+$lang['load_more'] = 'Carregar mais';
+$lang['list'] = 'Lista';
+$lang['default'] = 'Padrão';
+$lang['table'] = 'Tabela';
+$lang['date'] = 'Data';
 // End
diff --git a/application/language/portuguese-br/upload_lang.php b/application/language/portuguese-br/upload_lang.php
index f5158a3f..5b6f98d6 100644
--- a/application/language/portuguese-br/upload_lang.php
+++ b/application/language/portuguese-br/upload_lang.php
@@ -37,19 +37,19 @@
  */
 defined('BASEPATH') OR exit('No direct script access allowed');
 
-$lang['upload_userfile_not_set'] = 'Unable to find a post variable called userfile.';
-$lang['upload_file_exceeds_limit'] = 'The uploaded file exceeds the maximum allowed size in your PHP configuration file.';
-$lang['upload_file_exceeds_form_limit'] = 'The uploaded file exceeds the maximum size allowed by the submission form.';
-$lang['upload_file_partial'] = 'The file was only partially uploaded.';
-$lang['upload_no_temp_directory'] = 'The temporary folder is missing.';
-$lang['upload_unable_to_write_file'] = 'The file could not be written to disk.';
-$lang['upload_stopped_by_extension'] = 'The file upload was stopped by extension.';
-$lang['upload_no_file_selected'] = 'You did not select a file to upload.';
-$lang['upload_invalid_filetype'] = 'The filetype you are attempting to upload is not allowed.';
-$lang['upload_invalid_filesize'] = 'The file you are attempting to upload is larger than the permitted size.';
-$lang['upload_invalid_dimensions'] = 'The image you are attempting to upload doesn\'t fit into the allowed dimensions.';
-$lang['upload_destination_error'] = 'A problem was encountered while attempting to move the uploaded file to the final destination.';
-$lang['upload_no_filepath'] = 'The upload path does not appear to be valid.';
-$lang['upload_no_file_types'] = 'You have not specified any allowed file types.';
-$lang['upload_bad_filename'] = 'The file name you submitted already exists on the server.';
-$lang['upload_not_writable'] = 'The upload destination folder does not appear to be writable.';
+$lang['upload_userfile_not_set'] = 'Não foi possível encontrar uma variável post chamada userfile.';
+$lang['upload_file_exceeds_limit'] = 'O arquivo enviado excede o tamanho máximo permitido em seu arquivo de configuração PHP.';
+$lang['upload_file_exceeds_form_limit'] = 'O arquivo carregado excede o tamanho máximo permitido pelo formulário de envio.';
+$lang['upload_file_partial'] = 'O arquivo foi carregado apenas parcialmente.';
+$lang['upload_no_temp_directory'] = 'A pasta temporária está faltando.';
+$lang['upload_unable_to_write_file'] = 'O arquivo não pôde ser gravado no disco.';
+$lang['upload_stopped_by_extension'] = 'O upload do arquivo foi interrompido por extensão.';
+$lang['upload_no_file_selected'] = 'Você não selecionou um arquivo para fazer upload.';
+$lang['upload_invalid_filetype'] = 'O tipo de arquivo que você está tentando enviar não é permitido.';
+$lang['upload_invalid_filesize'] = 'O arquivo que você está tentando enviar é maior do que o tamanho permitido.';
+$lang['upload_invalid_dimensions'] = 'A imagem que você está tentando enviar não se encaixa nas dimensões permitidas.';
+$lang['upload_destination_error'] = 'Foi encontrado um problema ao tentar mover o arquivo carregado para o destino final.';
+$lang['upload_no_filepath'] = 'O caminho de upload não parece ser válido.';
+$lang['upload_no_file_types'] = 'Você não especificou nenhum tipo de arquivo permitido.';
+$lang['upload_bad_filename'] = 'O nome do arquivo que você enviou já existe no servidor.';
+$lang['upload_not_writable'] = 'A pasta de destino do upload não parece ser gravável.';

From ca57834262f14bc1123ef3d9d0ec0e514e818738 Mon Sep 17 00:00:00 2001
From: Vitor Mattos <vitor@php.rio>
Date: Fri, 16 Apr 2021 19:14:00 -0300
Subject: [PATCH 05/72] New translation

---
 application/language/portuguese-br/translations_lang.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/application/language/portuguese-br/translations_lang.php b/application/language/portuguese-br/translations_lang.php
index 35718cfc..7bf66a9f 100755
--- a/application/language/portuguese-br/translations_lang.php
+++ b/application/language/portuguese-br/translations_lang.php
@@ -305,7 +305,7 @@ $lang['read_and_agree_to_privacy_policy'] = 'Eu li e aceito as {$link}Políticas
 $lang['delete_personal_information_hint'] = 'Deletar toda informação pessoal do sistema.';
 $lang['delete_personal_information'] = 'Deletar Informação Pessoal';
 $lang['delete_personal_information_prompt'] = 'Tem certeza que deja deletar suas informações pessoais? Essa ação não pode ser desfeita.';
-$lang['location'] = 'Location';
+$lang['location'] = 'Local';
 $lang['working_plan_exception'] = 'Exceção do plano de trabalho';
 $lang['working_plan_exceptions'] = 'Exceções do plano de trabalho';
 $lang['working_plan_exceptions_hint'] = 'Adicione um dia de exceção do plano de trabalho, fora do plano de trabalho.';

From de867ef4c53ddce1ad8bdae53fc8cf889446c35a Mon Sep 17 00:00:00 2001
From: Vitor Mattos <vitor@php.rio>
Date: Fri, 16 Apr 2021 20:33:14 -0300
Subject: [PATCH 06/72] Remove duplicated translate key

---
 application/language/portuguese-br/translations_lang.php | 1 -
 1 file changed, 1 deletion(-)

diff --git a/application/language/portuguese-br/translations_lang.php b/application/language/portuguese-br/translations_lang.php
index 7bf66a9f..580285fa 100755
--- a/application/language/portuguese-br/translations_lang.php
+++ b/application/language/portuguese-br/translations_lang.php
@@ -16,7 +16,6 @@ $lang['first_name'] = 'Primeiro Nome';
 $lang['last_name'] = 'Ultimo Nome';
 $lang['email'] = 'Email';
 $lang['phone_number'] = 'Telefone';
-$lang['phone_number'] = 'Phone Number';
 $lang['address'] = 'Endereço';
 $lang['city'] = 'Cidade';
 $lang['zip_code'] = 'CEP';

From ab07b585f019440a6d856c87b8d390b33ef567a1 Mon Sep 17 00:00:00 2001
From: Vitor Mattos <vitor@php.rio>
Date: Fri, 16 Apr 2021 20:51:31 -0300
Subject: [PATCH 07/72] Update translation

---
 .../portuguese-br/translations_lang.php       | 84 +++++++++----------
 1 file changed, 42 insertions(+), 42 deletions(-)

diff --git a/application/language/portuguese-br/translations_lang.php b/application/language/portuguese-br/translations_lang.php
index 580285fa..14cc3329 100755
--- a/application/language/portuguese-br/translations_lang.php
+++ b/application/language/portuguese-br/translations_lang.php
@@ -1,6 +1,6 @@
 <?php defined('BASEPATH') OR exit('No direct script access allowed');
 // Portuguese BR
-$lang['page_title'] = 'Agendar Horário';
+$lang['page_title'] = 'Agendar horário';
 $lang['service_and_provider'] = 'Selecione o serviço e o atendente';
 $lang['select_service'] = 'Selecione o serviço';
 $lang['select_provider'] = 'Selecione o atendente';
@@ -12,8 +12,8 @@ $lang['appointment_date_and_time'] = 'Selecione a data e a hora do agendamento';
 $lang['no_available_hours'] = 'Não existem horários disponíveis para a data selecionada. Por favor, selecione outra data.';
 $lang['appointment_hour_missing'] = 'Por favor, selecione um horário antes de continuar.';
 $lang['customer_information'] = 'Preencha as suas informações';
-$lang['first_name'] = 'Primeiro Nome';
-$lang['last_name'] = 'Ultimo Nome';
+$lang['first_name'] = 'Primeiro nome';
+$lang['last_name'] = 'Ultimo nome';
 $lang['email'] = 'Email';
 $lang['phone_number'] = 'Telefone';
 $lang['address'] = 'Endereço';
@@ -23,13 +23,13 @@ $lang['notes'] = 'Observações.';
 $lang['language'] = 'Idioma';
 $lang['no_language'] = 'Sem idioma';
 $lang['fields_are_required'] = '* campos obrigatórios';
-$lang['appointment_confirmation'] = 'Confirmar Agendamento';
+$lang['appointment_confirmation'] = 'Confirmar agendamento';
 $lang['confirm'] = 'Comfirmar';
 $lang['update'] = 'Atualizar';
 $lang['cancel_appointment_hint'] = 'Pressione o botão "cancelar" para cancelar o agendamento.';
 $lang['cancel'] = 'Cancelar';
 $lang['appointment_registered'] = 'O agendamento foi registrado com sucesso.';
-$lang['cancel_appointment_title'] = 'Cancelar Agendamento';
+$lang['cancel_appointment_title'] = 'Cancelar agendamento';
 $lang['appointment_cancelled'] = 'Agendamento cancelado com sucesso.';
 $lang['appointment_cancelled_title'] = 'Agendamento cancelado';
 $lang['reason'] = 'Razão';
@@ -39,7 +39,7 @@ $lang['add_to_google_calendar'] = 'Adicionar ao calendario do google';
 $lang['appointment_booked'] = 'O seu horário foi reservado com sucesso.';
 $lang['thank_you_for_appointment'] = 'Obriagado por agendar um horário conosco. Abaixo segue os detalhes. Para alterações, abrir o link.';
 $lang['appointment_details_title'] = 'Detalhes do agendamento';
-$lang['customer_details_title'] = 'Detalhes do Cliente';
+$lang['customer_details_title'] = 'Detalhes do cliente';
 $lang['service'] = 'Serviço';
 $lang['provider'] = 'Atendente';
 $lang['customer'] = 'Cliente';
@@ -62,8 +62,8 @@ $lang['users'] = 'Usuários';
 $lang['settings'] = 'Definições';
 $lang['log_out'] = 'Sair';
 $lang['synchronize'] = 'Sincronizar';
-$lang['enable_sync'] = 'Habilitar Sincronização';
-$lang['disable_sync'] = 'Desabiltar Sincronização';
+$lang['enable_sync'] = 'Habilitar sincronização';
+$lang['disable_sync'] = 'Desabiltar sincronização';
 $lang['disable_sync_prompt'] = 'Tem certeza de que deseja desativar a sincronização do calendário?';
 $lang['reload'] = 'Atualizar';
 $lang['appointment'] = 'Agenda';
@@ -84,7 +84,7 @@ $lang['manage_customers_hint'] = 'Gerenciar os clientes e visualizar o seu hist
 $lang['manage_services_hint'] = 'Gerenciar os serviços e as categorias do sistema.';
 $lang['manage_users_hint'] = 'Gerenciar os usuários de backend (administradores, fornecedores, secretárias).';
 $lang['settings_hint'] = 'Definir as configurações do sistema e do usuario.';
-$lang['log_out_hint'] = 'Sair do Sistema.';
+$lang['log_out_hint'] = 'Sair do sistema.';
 $lang['unavailable_periods_hint'] = 'Durante os periodos indisponíveis o fornecedor não aceitar novos agendamentos.';
 $lang['new_appointment_hint'] = 'Criar um novo agendamento e salvar na base de dados.';
 $lang['reload_appointments_hint'] = 'atualizar os agentamentos do calendario.';
@@ -97,16 +97,16 @@ $lang['save'] = 'Salvar';
 $lang['new'] = 'Novo';
 $lang['select'] = 'Selecionar';
 $lang['hide'] = 'Esconder';
-$lang['type_to_filter_customers'] = 'Filtrar Clientes';
+$lang['type_to_filter_customers'] = 'Filtrar clientes';
 $lang['clear_fields_add_existing_customer_hint'] = 'Limpar os campos e inserir um novo cliente.';
 $lang['pick_existing_customer_hint'] = 'Escolha um cliente existente.';
-$lang['new_appointment_title'] = 'Novo Agendamento';
-$lang['edit_appointment_title'] = 'Editar Agendamento';
-$lang['delete_appointment_title'] = 'Apagar Agendamento';
+$lang['new_appointment_title'] = 'Novo agendamento';
+$lang['edit_appointment_title'] = 'Editar agendamento';
+$lang['delete_appointment_title'] = 'Apagar agendamento';
 $lang['write_appointment_removal_reason'] = 'Por favor, dedique alguns minutos para escrever a razão que você está apagando o agendamento:';
 $lang['appointment_saved'] = 'Agendamento salvo com sucesso.';
-$lang['new_unavailable_title'] = 'Novo Período Indisponível';
-$lang['edit_unavailable_title'] = 'Edite Período Indisponível';
+$lang['new_unavailable_title'] = 'Novo período indisponível';
+$lang['edit_unavailable_title'] = 'Edite período indisponível';
 $lang['unavailable_saved'] = 'Período Indisponível salvo com sucesso.';
 $lang['start_date_before_end_error'] = 'A data início é superior ao valor da data fim.';
 $lang['invalid_duration'] = 'Invalid duration.';
@@ -118,7 +118,7 @@ $lang['services'] = 'Serviços';
 $lang['duration_minutes'] = 'Duração (minutos)';
 $lang['currency'] = 'Moeda';
 $lang['category'] = 'Categoria';
-$lang['no_category'] = 'Sem Categoria';
+$lang['no_category'] = 'Sem categoria';
 $lang['description'] = 'Descrição';
 $lang['categories'] = 'Categorias';
 $lang['admins'] = 'Administradores';
@@ -129,7 +129,7 @@ $lang['mobile'] = 'Mobile';
 $lang['state'] = 'Estado';
 $lang['username'] = 'Nome de usuário';
 $lang['password'] = 'Senha';
-$lang['retype_password'] = 'Repetir Senha';
+$lang['retype_password'] = 'Repetir senha';
 $lang['receive_notifications'] = 'Receber notificações';
 $lang['passwords_mismatch'] = 'Senha inválida.';
 $lang['admin_saved'] = 'Administrador salvo com sucesso.';
@@ -178,7 +178,7 @@ $lang['book_advance_timeout'] = 'Tempo esgotado...';
 $lang['book_advance_timeout_hint'] = 'Definir o limite de tempo (em minutos) antes que os clientes possam reservar ou reorganizar agendamentos com a empresa.';
 $lang['timeout_minutes'] = 'O tempo acaba (minutos)';
 $lang['about_app_info'] = 'Easy! Appointmentes é uma aplicação web altamente personalizável que permite que os clientes marquem eventos através da internet. Além disso, oferece a possibilidade de sincronizar seus dados com o Google Calendar para que possa usá-los com outros serviços.';
-$lang['current_version'] = 'Versão Corrente';
+$lang['current_version'] = 'Versão atual';
 $lang['support'] = 'Suporte';
 $lang['about_app_support'] = 'Se  encontrar algum problema ao usar o Easy!Appointments pode procurar o Grupo oficial do Google para obter respostas. Se precisar, pode iniciar um novo tópico na página do Google Code, a fim de ajudar o progresso do desenvolvimento.';
 $lang['official_website'] = 'Site Oficial';
@@ -198,16 +198,16 @@ $lang['forgot_your_password'] = 'Esqueceu a senha?';
 $lang['login_failed'] = 'Falha no login, por favor inserir os seus dados de acesso e tentar novamente.';
 $lang['type_username_and_email_for_new_password'] = 'Digite o seu nome de usuário e email para ser gerado uma nova senha.';
 $lang['enter_email_here'] = 'Insira o seu email...';
-$lang['regenerate_password'] = 'Alterar Senha';
+$lang['regenerate_password'] = 'Alterar senha';
 $lang['go_to_login'] = 'Voltar à página de Login';
 $lang['new_password_sent_with_email'] = 'A nova senha foi enviada para o seu email.';
 $lang['new_account_password'] = 'Senha para nova conta';
 $lang['new_password_is'] = 'A nova senha da conta é $password Por favor, guarde este email para ser possível recuperar, se necessário. Pode alterar a senha na página de configurações.';
 $lang['delete_record_prompt'] = 'Tem certeza que pretende excluir o registo? Não será possível recuperá-lo.';
 $lang['delete_admin'] = 'Excluir Administrador';
-$lang['delete_customer'] = 'Excluir Cliente';
-$lang['delete_service'] = 'Excluir Serviço';
-$lang['delete_category'] = 'Excluir Categoria de Serviço';
+$lang['delete_customer'] = 'Excluir cliente';
+$lang['delete_service'] = 'Excluir serviço';
+$lang['delete_category'] = 'Excluir categoria de serviço';
 $lang['delete_provider'] = 'Excluir atendente';
 $lang['delete_secretary'] = 'Excluir assistente';
 $lang['delete_appointment'] = 'Excluir agendamento';
@@ -230,18 +230,18 @@ $lang['service_communication_error'] = 'Erro de conexão com o servidor.';
 $lang['no_privileges_edit_appointments'] = 'Não tem permissões para editar agendamentos.';
 $lang['unavailable_updated'] = 'Período indisponível, atualizado com sucesso.';
 $lang['appointments'] = 'Agendamentos';
-$lang['unexpected_warnings'] = 'Avisos Inesperados';
+$lang['unexpected_warnings'] = 'Avisos inesperados';
 $lang['unexpected_warnings_message'] = 'A operação foi concluida, contudo existem avisos.';
 $lang['filter'] = 'Filtrar';
 $lang['clear'] = 'Limpar';
-$lang['uncategorized'] = 'Sem Categoria';
+$lang['uncategorized'] = 'Sem categoria';
 $lang['username_already_exists'] = 'O Nome de usuário já existe.';
 $lang['password_length_notice'] = 'A senha deve ter pelo menos $number caracteres.';
 $lang['general_settings'] = 'Definições Gerais';
 $lang['personal_information'] = 'Informações Pessoais';
 $lang['system_login'] = 'Sistema de Acesso';
 $lang['user_settings_are_invalid'] = 'Configurações inválidas. Por favor corrija e tente novamente.';
-$lang['add_break'] = 'Adicionar Parada ou Pausa';
+$lang['add_break'] = 'Adicionar parada ou pausa';
 $lang['january'] = 'Janeiro';
 $lang['february'] = 'Fevereiro';
 $lang['march'] = 'Março';
@@ -257,7 +257,7 @@ $lang['december'] = 'Dezembro';
 $lang['previous'] = 'Anterior';
 $lang['next'] = 'Seguinte';
 $lang['now'] = 'Agora';
-$lang['select_time'] = 'Selecionar Tempo';
+$lang['select_time'] = 'Selecionar tempo';
 $lang['time'] = 'Tempo';
 $lang['hour'] = 'Hora';
 $lang['minute'] = 'Minuto';
@@ -272,13 +272,13 @@ $lang['ea_update_success'] = 'Easy!Appointments foi atualizado com sucesso.';
 $lang['require_captcha'] = 'Requer CAPTCHA';
 $lang['require_captcha_hint'] = 'Quando habilitado, os clientes terão que digitar um código CAPTCHA gerado randomicamente antes de cadastrar/atualizar um agendamento.';
 $lang['captcha_is_wrong'] = 'Verificação do CAPTCHA falhou, favor tente novamente.';
-$lang['any_provider'] = 'Qualquer Atendente';
+$lang['any_provider'] = 'Qualquer atendente';
 $lang['requested_hour_is_unavailable'] = 'Infelizmente, o agendamento solicitado não está disponível. Por favor selecione um horário diferente para o seu agendamento.';
-$lang['customer_notifications'] = 'Notificações de Clientes';
+$lang['customer_notifications'] = 'Notificações de clientes';
 $lang['customer_notifications_hint'] = 'Define se o cliente receberá ou não, notificações por email sempre que um de seus agendamentos sejam alterados de horário.';
-$lang['date_format'] = 'Formato da Data';
+$lang['date_format'] = 'Formato da data';
 $lang['date_format_hint'] = 'Altera o formato de visualização da Data (D - Data, M - Mes, Y - Ano).';
-$lang['time_format'] = 'Formato da Hora';
+$lang['time_format'] = 'Formato da hora';
 $lang['time_format_hint'] = 'Altera o formato em que a hora é apresentada (H - Horas, M - Minutos).';
 $lang['first_weekday'] = 'Primeiro dia da semana';
 $lang['first_weekday_hint'] = 'Defina o primeiro dia da semana do calendário.';
@@ -288,27 +288,27 @@ $lang['flexible'] = 'Flexível';
 $lang['fixed'] = 'Fixa';
 $lang['attendants_number'] = 'Número de participantes';
 $lang['reset_working_plan'] = 'Redefina o plano de trabalho de volta para os valores padrões';
-$lang['legal_contents'] = 'Conteúdos Legais';
-$lang['cookie_notice'] = 'Cookie Notice';
-$lang['display_cookie_notice'] = 'Mostrar Notificação de Cookie';
-$lang['cookie_notice_content'] = 'Conteúdo da Notificação de Cookie';
-$lang['terms_and_conditions'] = 'Termos e Condições';
-$lang['display_terms_and_conditions'] = 'Mostrar Termos e Condições';
-$lang['terms_and_conditions_content'] = 'Conteúdo dos Termos e Condições';
-$lang['privacy_policy'] = 'Políticas de Privacidade';
-$lang['display_privacy_policy'] = 'Mostrar Políticas de Privacidade';
-$lang['privacy_policy_content'] = 'Conteúdo das Políticas de Privacidade';
+$lang['legal_contents'] = 'Conteúdos legais';
+$lang['cookie_notice'] = 'Notificação de cookie';
+$lang['display_cookie_notice'] = 'Mostrar notificação de cookie';
+$lang['cookie_notice_content'] = 'Conteúdo da notificação de cookie';
+$lang['terms_and_conditions'] = 'Termos e condições';
+$lang['display_terms_and_conditions'] = 'Mostrar termos e condições';
+$lang['terms_and_conditions_content'] = 'Conteúdo dos termos e condições';
+$lang['privacy_policy'] = 'Políticas de privacidade';
+$lang['display_privacy_policy'] = 'Mostrar políticas de privacidade';
+$lang['privacy_policy_content'] = 'Conteúdo das políticas de privacidade';
 $lang['website_using_cookies_to_ensure_best_experience'] = 'Este website utiliza cookies para garantir que você tenha uma melhor experiência no nosso website.';
 $lang['read_and_agree_to_terms_and_conditions'] = 'Eu li e aceito os {$link}Termos e Condições{/$link}.';
 $lang['read_and_agree_to_privacy_policy'] = 'Eu li e aceito as {$link}Políticas de Privacidade{/$link}.';
 $lang['delete_personal_information_hint'] = 'Deletar toda informação pessoal do sistema.';
-$lang['delete_personal_information'] = 'Deletar Informação Pessoal';
+$lang['delete_personal_information'] = 'Deletar informação pessoal';
 $lang['delete_personal_information_prompt'] = 'Tem certeza que deja deletar suas informações pessoais? Essa ação não pode ser desfeita.';
 $lang['location'] = 'Local';
 $lang['working_plan_exception'] = 'Exceção do plano de trabalho';
 $lang['working_plan_exceptions'] = 'Exceções do plano de trabalho';
 $lang['working_plan_exceptions_hint'] = 'Adicione um dia de exceção do plano de trabalho, fora do plano de trabalho.';
-$lang['new_working_plan_exception_title'] = 'Nova Exceção de Plano de Trabalho';
+$lang['new_working_plan_exception_title'] = 'Nova exceção de plano de trabalho';
 $lang['working_plan_exception_saved'] = 'Exceção do plano de trabalho salva com sucesso.';
 $lang['working_plan_exception_deleted'] = 'Exceção do plano de trabalho excluída com sucesso.';
 $lang['add_working_plan_exceptions_during_each_day'] = 'Adicione exceções ao plano de trabalho, fora do plano de trabalho.';

From 3845a3aeaecd993122356826537b3dfb7d8cc9ea Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Tue, 11 May 2021 22:47:58 +0000
Subject: [PATCH 08/72] Bump hosted-git-info from 2.8.8 to 2.8.9

Bumps [hosted-git-info](https://github.com/npm/hosted-git-info) from 2.8.8 to 2.8.9.
- [Release notes](https://github.com/npm/hosted-git-info/releases)
- [Changelog](https://github.com/npm/hosted-git-info/blob/v2.8.9/CHANGELOG.md)
- [Commits](https://github.com/npm/hosted-git-info/compare/v2.8.8...v2.8.9)

Signed-off-by: dependabot[bot] <support@github.com>
---
 package-lock.json | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 69c0aeca..6af24e28 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5822,11 +5822,6 @@
             "parse-passwd": "^1.0.0"
           }
         },
-        "hosted-git-info": {
-          "version": "2.8.8",
-          "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.8.8.tgz",
-          "integrity": "sha512-f/wzC2QaWBs7t9IYqB4T3sR1xviIViXJRJTWBlx2Gf3g0Xi5vI7Yy4koXQ1c9OYDGHN9sBy1DQ2AB8fqZBWhUg=="
-        },
         "html-comment-regex": {
           "version": "1.1.2",
           "resolved": "https://registry.npmjs.org/html-comment-regex/-/html-comment-regex-1.1.2.tgz",
@@ -11751,10 +11746,9 @@
       }
     },
     "hosted-git-info": {
-      "version": "2.8.8",
-      "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.8.8.tgz",
-      "integrity": "sha512-f/wzC2QaWBs7t9IYqB4T3sR1xviIViXJRJTWBlx2Gf3g0Xi5vI7Yy4koXQ1c9OYDGHN9sBy1DQ2AB8fqZBWhUg==",
-      "dev": true
+      "version": "2.8.9",
+      "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.8.9.tgz",
+      "integrity": "sha512-mxIDAb9Lsm6DoOJ7xH+5+X4y1LU/4Hi50L9C5sIswK3JzULS4bwk1FvjdBgvYR4bzT4tuUQiC15FE2f5HbLvYw=="
     },
     "htmlparser2": {
       "version": "3.8.3",

From dfdbea621480d837b2cf7f2db2ecd85e827ed22c Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 14 Jun 2021 10:21:43 +0200
Subject: [PATCH 09/72] HTTP_ACCEPT_LANGUAGE is not set when executing the app
 from the console.

---
 application/config/config.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/application/config/config.php b/application/config/config.php
index c4d1aae5..9ac8fb53 100644
--- a/application/config/config.php
+++ b/application/config/config.php
@@ -113,7 +113,7 @@ $languages = [
     'tr' => 'turkish',
 ];
 
-$language_code = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
+$language_code = isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) ? substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2) : 'en';
 
 $config['language'] = isset($_SERVER['HTTP_ACCEPT_LANGUAGE'], $languages[$language_code])
     ? $languages[$language_code]

From 55a4665c7d1fc443cf1f2725cb9f07cc6bed7eec Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 14 Jun 2021 10:27:37 +0200
Subject: [PATCH 10/72] Select the any-provider option by default.

---
 assets/js/frontend_book.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/assets/js/frontend_book.js b/assets/js/frontend_book.js
index e2cba84d..389d7770 100644
--- a/assets/js/frontend_book.js
+++ b/assets/js/frontend_book.js
@@ -233,7 +233,7 @@ window.FrontendBook = window.FrontendBook || {};
 
             // Add the "Any Provider" entry.
             if ($('#select-provider option').length >= 1 && GlobalVariables.displayAnyProvider === '1') {
-                $('#select-provider').append(new Option('- ' + EALang.any_provider + ' -', 'any-provider'));
+                $('#select-provider').append(new Option('- ' + EALang.any_provider + ' -', 'any-provider', true, true));
             }
 
             FrontendBookApi.getUnavailableDates($('#select-provider').val(), $(this).val(),

From 3c4e7923ceaaa053ec9d0de78799408ca4fb29b2 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 13:42:29 +0300
Subject: [PATCH 11/72] Removed duplicate row from the configuration file.

---
 application/config/email.php | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/application/config/email.php b/application/config/email.php
index 905cf010..0f70a35d 100644
--- a/application/config/email.php
+++ b/application/config/email.php
@@ -7,11 +7,8 @@
 $config['useragent'] = 'Easy!Appointments';
 $config['protocol'] = 'mail'; // or 'smtp'
 $config['mailtype'] = 'html'; // or 'text'
-
 // $config['smtp_debug'] = '0'; // or '1'
-// $config['smtp_auth'] = TRUE; //or FALSE for anonymous relay NOTE: DONT USE QUOTES ' !
-
-// $config['smtp_host'] = '';
+// $config['smtp_auth'] = TRUE; //or FALSE for anonymous relay.
 // $config['smtp_host'] = '';
 // $config['smtp_user'] = '';
 // $config['smtp_pass'] = '';

From aca21053022893d50e075b29b182e2e430f1494c Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 14:03:18 +0300
Subject: [PATCH 12/72] Aligned the framework to the updated PHP8.0 compatible
 CodeIgniter version.

---
 composer.json |   8 +-
 composer.lock | 475 ++++++++++++++++++++++++++++----------------------
 2 files changed, 277 insertions(+), 206 deletions(-)

diff --git a/composer.json b/composer.json
index b280b8f2..cb18245d 100644
--- a/composer.json
+++ b/composer.json
@@ -31,6 +31,12 @@
             "EA\\Engine\\": "engine/"
         }
     },
+    "repositories": [
+        {
+            "type": "vcs",
+            "url": "https://github.com/alextselegidis/CodeIgniter.git"
+        }
+    ],
     "require": {
         "php": ">=7.3",
         "ext-curl": "*",
@@ -39,7 +45,7 @@
         "ext-gd": "*",
         "gregwar/captcha": "^1.1",
         "phpmailer/phpmailer": "^6.1",
-        "codeigniter/framework": "^3.1.6",
+        "codeigniter/framework": "dev-3.1.11-php8.0",
         "jsvrcek/ics": "^0.8",
         "monolog/monolog": "^1",
         "google/apiclient": "^2.0"
diff --git a/composer.lock b/composer.lock
index b26f620b..eed2ed87 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,24 +4,24 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "8bb4f5940fdb7f7e3e042248ba52e8dd",
+    "content-hash": "497c61b934beb02136c67ffa45347eb7",
     "packages": [
         {
             "name": "codeigniter/framework",
-            "version": "3.1.11",
+            "version": "dev-3.1.11-php8.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/bcit-ci/CodeIgniter.git",
-                "reference": "b73eb19aed66190c10c9cad476da7c36c271d6dc"
+                "url": "https://github.com/alextselegidis/CodeIgniter.git",
+                "reference": "0648ae2acb3fae84f2cc49e15edb345ccef6cad5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/bcit-ci/CodeIgniter/zipball/b73eb19aed66190c10c9cad476da7c36c271d6dc",
-                "reference": "b73eb19aed66190c10c9cad476da7c36c271d6dc",
+                "url": "https://api.github.com/repos/alextselegidis/CodeIgniter/zipball/0648ae2acb3fae84f2cc49e15edb345ccef6cad5",
+                "reference": "0648ae2acb3fae84f2cc49e15edb345ccef6cad5",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.7"
+                "php": ">=5.4.8"
             },
             "require-dev": {
                 "mikey179/vfsstream": "1.1.*",
@@ -31,33 +31,31 @@
                 "paragonie/random_compat": "Provides better randomness in PHP 5.x"
             },
             "type": "project",
-            "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
             "description": "The CodeIgniter framework",
             "homepage": "https://codeigniter.com",
             "support": {
-                "forum": "http://forum.codeigniter.com/",
-                "issues": "https://github.com/bcit-ci/CodeIgniter/issues",
+                "forum": "https://forum.codeigniter.com/",
+                "wiki": "https://github.com/bcit-ci/CodeIgniter/wiki",
                 "slack": "https://codeigniterchat.slack.com",
-                "source": "https://github.com/bcit-ci/CodeIgniter",
-                "wiki": "https://github.com/bcit-ci/CodeIgniter/wiki"
+                "source": "https://github.com/bcit-ci/CodeIgniter"
             },
-            "time": "2019-09-19T12:08:45+00:00"
+            "time": "2021-03-10T20:11:52+00:00"
         },
         {
             "name": "firebase/php-jwt",
-            "version": "v5.2.0",
+            "version": "v5.4.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/firebase/php-jwt.git",
-                "reference": "feb0e820b8436873675fd3aca04f3728eb2185cb"
+                "reference": "d2113d9b2e0e349796e72d2a63cf9319100382d2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/feb0e820b8436873675fd3aca04f3728eb2185cb",
-                "reference": "feb0e820b8436873675fd3aca04f3728eb2185cb",
+                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/d2113d9b2e0e349796e72d2a63cf9319100382d2",
+                "reference": "d2113d9b2e0e349796e72d2a63cf9319100382d2",
                 "shasum": ""
             },
             "require": {
@@ -66,6 +64,9 @@
             "require-dev": {
                 "phpunit/phpunit": ">=4.8 <=9"
             },
+            "suggest": {
+                "paragonie/sodium_compat": "Support EdDSA (Ed25519) signatures when libsodium is not present"
+            },
             "type": "library",
             "autoload": {
                 "psr-4": {
@@ -96,27 +97,27 @@
             ],
             "support": {
                 "issues": "https://github.com/firebase/php-jwt/issues",
-                "source": "https://github.com/firebase/php-jwt/tree/master"
+                "source": "https://github.com/firebase/php-jwt/tree/v5.4.0"
             },
-            "time": "2020-03-25T18:49:23+00:00"
+            "time": "2021-06-23T19:00:23+00:00"
         },
         {
             "name": "google/apiclient",
-            "version": "v2.9.1",
+            "version": "v2.10.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/googleapis/google-api-php-client.git",
-                "reference": "2fb6e702aca5d68203fa737f89f6f774022494c6"
+                "reference": "11871e94006ce7a419bb6124d51b6f9ace3f679b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/googleapis/google-api-php-client/zipball/2fb6e702aca5d68203fa737f89f6f774022494c6",
-                "reference": "2fb6e702aca5d68203fa737f89f6f774022494c6",
+                "url": "https://api.github.com/repos/googleapis/google-api-php-client/zipball/11871e94006ce7a419bb6124d51b6f9ace3f679b",
+                "reference": "11871e94006ce7a419bb6124d51b6f9ace3f679b",
                 "shasum": ""
             },
             "require": {
                 "firebase/php-jwt": "~2.0||~3.0||~4.0||~5.0",
-                "google/apiclient-services": "~0.13",
+                "google/apiclient-services": "~0.200",
                 "google/auth": "^1.10",
                 "guzzlehttp/guzzle": "~5.3.3||~6.0||~7.0",
                 "guzzlehttp/psr7": "^1.2",
@@ -126,7 +127,7 @@
             },
             "require-dev": {
                 "cache/filesystem-adapter": "^0.3.2|^1.1",
-                "composer/composer": "^1.10",
+                "composer/composer": "^1.10.22",
                 "dealerdirect/phpcodesniffer-composer-installer": "^0.7",
                 "phpcompatibility/php-compatibility": "^9.2",
                 "phpunit/phpunit": "^5.7||^8.5.13",
@@ -165,35 +166,38 @@
             ],
             "support": {
                 "issues": "https://github.com/googleapis/google-api-php-client/issues",
-                "source": "https://github.com/googleapis/google-api-php-client/tree/v2.9.1"
+                "source": "https://github.com/googleapis/google-api-php-client/tree/v2.10.1"
             },
-            "time": "2021-01-19T17:48:59+00:00"
+            "time": "2021-06-25T14:25:44+00:00"
         },
         {
             "name": "google/apiclient-services",
-            "version": "v0.157.0",
+            "version": "v0.204.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/googleapis/google-api-php-client-services.git",
-                "reference": "957846303c28c10033fa83d8688ffd325c260a3e"
+                "reference": "c718661b22f9b92e0d89520dbb8f16c62307885a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/googleapis/google-api-php-client-services/zipball/957846303c28c10033fa83d8688ffd325c260a3e",
-                "reference": "957846303c28c10033fa83d8688ffd325c260a3e",
+                "url": "https://api.github.com/repos/googleapis/google-api-php-client-services/zipball/c718661b22f9b92e0d89520dbb8f16c62307885a",
+                "reference": "c718661b22f9b92e0d89520dbb8f16c62307885a",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.4"
+                "php": ">=5.6"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.8|^5"
+                "phpunit/phpunit": "^5.7||^8.5.13"
             },
             "type": "library",
             "autoload": {
-                "psr-0": {
-                    "Google_Service_": "src"
-                }
+                "psr-4": {
+                    "Google\\Service\\": "src"
+                },
+                "files": [
+                    "autoload.php"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -206,22 +210,22 @@
             ],
             "support": {
                 "issues": "https://github.com/googleapis/google-api-php-client-services/issues",
-                "source": "https://github.com/googleapis/google-api-php-client-services/tree/v0.157.0"
+                "source": "https://github.com/googleapis/google-api-php-client-services/tree/v0.204.0"
             },
-            "time": "2021-01-19T12:20:06+00:00"
+            "time": "2021-07-18T11:18:23+00:00"
         },
         {
             "name": "google/auth",
-            "version": "v1.14.3",
+            "version": "v1.16.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/googleapis/google-auth-library-php.git",
-                "reference": "c1503299c779af0cbc99b43788f75930988852cf"
+                "reference": "c747738d2dd450f541f09f26510198fbedd1c8a0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/googleapis/google-auth-library-php/zipball/c1503299c779af0cbc99b43788f75930988852cf",
-                "reference": "c1503299c779af0cbc99b43788f75930988852cf",
+                "url": "https://api.github.com/repos/googleapis/google-auth-library-php/zipball/c747738d2dd450f541f09f26510198fbedd1c8a0",
+                "reference": "c747738d2dd450f541f09f26510198fbedd1c8a0",
                 "shasum": ""
             },
             "require": {
@@ -229,13 +233,13 @@
                 "guzzlehttp/guzzle": "^5.3.1|^6.2.1|^7.0",
                 "guzzlehttp/psr7": "^1.2",
                 "php": ">=5.4",
-                "psr/cache": "^1.0",
+                "psr/cache": "^1.0|^2.0",
                 "psr/http-message": "^1.0"
             },
             "require-dev": {
                 "guzzlehttp/promises": "0.1.1|^1.3",
-                "kelvinmo/simplejwt": "^0.2.5",
-                "phpseclib/phpseclib": "^2",
+                "kelvinmo/simplejwt": "^0.2.5|^0.5.1",
+                "phpseclib/phpseclib": "^2.0.31",
                 "phpunit/phpunit": "^4.8.36|^5.7",
                 "sebastian/comparator": ">=1.2.3",
                 "squizlabs/php_codesniffer": "^3.5"
@@ -263,9 +267,9 @@
             "support": {
                 "docs": "https://googleapis.github.io/google-auth-library-php/master/",
                 "issues": "https://github.com/googleapis/google-auth-library-php/issues",
-                "source": "https://github.com/googleapis/google-auth-library-php/tree/v1.14.3"
+                "source": "https://github.com/googleapis/google-auth-library-php/tree/v1.16.0"
             },
-            "time": "2020-10-16T21:33:48+00:00"
+            "time": "2021-06-22T18:06:03+00:00"
         },
         {
             "name": "gregwar/captcha",
@@ -326,22 +330,22 @@
         },
         {
             "name": "guzzlehttp/guzzle",
-            "version": "7.2.0",
+            "version": "7.3.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "0aa74dfb41ae110835923ef10a9d803a22d50e79"
+                "reference": "7008573787b430c1c1f650e3722d9bba59967628"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/0aa74dfb41ae110835923ef10a9d803a22d50e79",
-                "reference": "0aa74dfb41ae110835923ef10a9d803a22d50e79",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/7008573787b430c1c1f650e3722d9bba59967628",
+                "reference": "7008573787b430c1c1f650e3722d9bba59967628",
                 "shasum": ""
             },
             "require": {
                 "ext-json": "*",
                 "guzzlehttp/promises": "^1.4",
-                "guzzlehttp/psr7": "^1.7",
+                "guzzlehttp/psr7": "^1.7 || ^2.0",
                 "php": "^7.2.5 || ^8.0",
                 "psr/http-client": "^1.0"
             },
@@ -349,6 +353,7 @@
                 "psr/http-client-implementation": "1.0"
             },
             "require-dev": {
+                "bamarni/composer-bin-plugin": "^1.4.1",
                 "ext-curl": "*",
                 "php-http/client-integration-tests": "^3.0",
                 "phpunit/phpunit": "^8.5.5 || ^9.3.5",
@@ -362,7 +367,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "7.1-dev"
+                    "dev-master": "7.3-dev"
                 }
             },
             "autoload": {
@@ -404,7 +409,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/guzzle/issues",
-                "source": "https://github.com/guzzle/guzzle/tree/7.2.0"
+                "source": "https://github.com/guzzle/guzzle/tree/7.3.0"
             },
             "funding": [
                 {
@@ -424,20 +429,20 @@
                     "type": "github"
                 }
             ],
-            "time": "2020-10-10T11:47:56+00:00"
+            "time": "2021-03-23T11:33:13+00:00"
         },
         {
             "name": "guzzlehttp/promises",
-            "version": "1.4.0",
+            "version": "1.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/promises.git",
-                "reference": "60d379c243457e073cff02bc323a2a86cb355631"
+                "reference": "8e7d04f1f6450fef59366c399cfad4b9383aa30d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/promises/zipball/60d379c243457e073cff02bc323a2a86cb355631",
-                "reference": "60d379c243457e073cff02bc323a2a86cb355631",
+                "url": "https://api.github.com/repos/guzzle/promises/zipball/8e7d04f1f6450fef59366c399cfad4b9383aa30d",
+                "reference": "8e7d04f1f6450fef59366c399cfad4b9383aa30d",
                 "shasum": ""
             },
             "require": {
@@ -477,22 +482,22 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/promises/issues",
-                "source": "https://github.com/guzzle/promises/tree/1.4.0"
+                "source": "https://github.com/guzzle/promises/tree/1.4.1"
             },
-            "time": "2020-09-30T07:37:28+00:00"
+            "time": "2021-03-07T09:25:29+00:00"
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "1.7.0",
+            "version": "1.8.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "53330f47520498c0ae1f61f7e2c90f55690c06a3"
+                "reference": "dc960a912984efb74d0a90222870c72c87f10c91"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/53330f47520498c0ae1f61f7e2c90f55690c06a3",
-                "reference": "53330f47520498c0ae1f61f7e2c90f55690c06a3",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/dc960a912984efb74d0a90222870c72c87f10c91",
+                "reference": "dc960a912984efb74d0a90222870c72c87f10c91",
                 "shasum": ""
             },
             "require": {
@@ -552,9 +557,9 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/psr7/issues",
-                "source": "https://github.com/guzzle/psr7/tree/1.7.0"
+                "source": "https://github.com/guzzle/psr7/tree/1.8.2"
             },
-            "time": "2020-09-30T07:37:11+00:00"
+            "time": "2021-04-26T09:17:50+00:00"
         },
         {
             "name": "jsvrcek/ics",
@@ -610,16 +615,16 @@
         },
         {
             "name": "monolog/monolog",
-            "version": "1.26.0",
+            "version": "1.26.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Seldaek/monolog.git",
-                "reference": "2209ddd84e7ef1256b7af205d0717fb62cfc9c33"
+                "reference": "c6b00f05152ae2c9b04a448f99c7590beb6042f5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Seldaek/monolog/zipball/2209ddd84e7ef1256b7af205d0717fb62cfc9c33",
-                "reference": "2209ddd84e7ef1256b7af205d0717fb62cfc9c33",
+                "url": "https://api.github.com/repos/Seldaek/monolog/zipball/c6b00f05152ae2c9b04a448f99c7590beb6042f5",
+                "reference": "c6b00f05152ae2c9b04a448f99c7590beb6042f5",
                 "shasum": ""
             },
             "require": {
@@ -680,7 +685,7 @@
             ],
             "support": {
                 "issues": "https://github.com/Seldaek/monolog/issues",
-                "source": "https://github.com/Seldaek/monolog/tree/1.26.0"
+                "source": "https://github.com/Seldaek/monolog/tree/1.26.1"
             },
             "funding": [
                 {
@@ -692,7 +697,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-12-14T12:56:38+00:00"
+            "time": "2021-05-28T08:32:12+00:00"
         },
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                 "ezsystems/ezpublish-legacy": ">=5.3,<5.3.12.6|>=5.4,<5.4.14.2|>=2011,<2017.12.7.3|>=2018.6,<2018.6.1.4|>=2018.9,<2018.9.1.3|>=2019.3,<2019.3.5.1",
                 "ezsystems/platform-ui-assets-bundle": ">=4.2,<4.2.3",
                 "ezsystems/repository-forms": ">=2.3,<2.3.2.1",
                 "ezyang/htmlpurifier": "<4.1.1",
+                "facade/ignition": "<1.16.14|>=2,<2.4.2|>=2.5,<2.5.2",
+                "feehi/cms": "<=2.1.1",
                 "firebase/php-jwt": "<2",
+                "flarum/core": ">=1,<=1.0.1",
+                "flarum/sticky": ">=0.1-beta.14,<=0.1-beta.15",
+                "flarum/tags": "<=0.1-beta.13",
+                "fluidtypo3/vhs": "<5.1.1",
                 "fooman/tcpdf": "<6.2.22",
+                "forkcms/forkcms": "<5.8.3",
                 "fossar/tcpdf-parser": "<6.2.22",
+                "francoisjacquet/rosariosis": "<6.5.1",
                 "friendsofsymfony/oauth2-php": "<1.3",
                 "friendsofsymfony/rest-bundle": ">=1.2,<1.2.2",
                 "friendsofsymfony/user-bundle": ">=1.2,<1.3.5",
                 "friendsoftypo3/mediace": ">=7.6.2,<7.6.5",
                 "fuel/core": "<1.8.1",
-                "getgrav/grav": "<1.7-beta.8",
-                "getkirby/cms": ">=3,<3.4.5",
+                "getgrav/grav": "<=1.7.10",
+                "getkirby/cms": "<=3.5.6",
                 "getkirby/panel": "<2.5.14",
                 "gos/web-socket-bundle": "<1.10.4|>=2,<2.6.1|>=3,<3.3",
                 "gree/jose": "<=2.2",
@@ -2342,92 +2364,114 @@
                 "guzzlehttp/guzzle": ">=4-rc.2,<4.2.4|>=5,<5.3.1|>=6,<6.2.1",
                 "illuminate/auth": ">=4,<4.0.99|>=4.1,<=4.1.31|>=4.2,<=4.2.22|>=5,<=5.0.35|>=5.1,<=5.1.46|>=5.2,<=5.2.45|>=5.3,<=5.3.31|>=5.4,<=5.4.36|>=5.5,<5.5.10",
                 "illuminate/cookie": ">=4,<=4.0.11|>=4.1,<=4.1.99999|>=4.2,<=4.2.99999|>=5,<=5.0.99999|>=5.1,<=5.1.99999|>=5.2,<=5.2.99999|>=5.3,<=5.3.99999|>=5.4,<=5.4.99999|>=5.5,<=5.5.49|>=5.6,<=5.6.99999|>=5.7,<=5.7.99999|>=5.8,<=5.8.99999|>=6,<6.18.31|>=7,<7.22.4",
-                "illuminate/database": "<6.20.12|>=7,<7.30.3|>=8,<8.22.1",
+                "illuminate/database": "<6.20.26|>=7,<8.40",
                 "illuminate/encryption": ">=4,<=4.0.11|>=4.1,<=4.1.31|>=4.2,<=4.2.22|>=5,<=5.0.35|>=5.1,<=5.1.46|>=5.2,<=5.2.45|>=5.3,<=5.3.31|>=5.4,<=5.4.36|>=5.5,<5.5.40|>=5.6,<5.6.15",
                 "illuminate/view": ">=7,<7.1.2",
+                "impresscms/impresscms": "<=1.4.2",
+                "intelliants/subrion": "<=4.2.1",
                 "ivankristianto/phpwhois": "<=4.3",
                 "james-heinrich/getid3": "<1.9.9",
+                "joomla/archive": "<1.1.10",
                 "joomla/session": "<1.3.1",
                 "jsmitty12/phpwhois": "<5.1",
                 "kazist/phpwhois": "<=4.2.6",
                 "kitodo/presentation": "<3.1.2",
+                "klaviyo/magento2-extension": ">=1,<3",
                 "kreait/firebase-php": ">=3.2,<3.8.1",
                 "la-haute-societe/tcpdf": "<6.2.22",
-                "laravel/framework": "<6.20.12|>=7,<7.30.3|>=8,<8.22.1",
+                "laminas/laminas-http": "<2.14.2",
+                "laravel/framework": "<6.20.26|>=7,<8.40",
                 "laravel/socialite": ">=1,<1.0.99|>=2,<2.0.10",
                 "league/commonmark": "<0.18.3",
-                "librenms/librenms": "<1.53",
+                "league/flysystem": "<1.1.4|>=2,<2.1.1",
+                "lexik/jwt-authentication-bundle": "<2.10.7|>=2.11,<2.11.3",
+                "librenms/librenms": "<21.1",
                 "livewire/livewire": ">2.2.4,<2.2.6",
                 "magento/community-edition": ">=2,<2.2.10|>=2.3,<2.3.3",
                 "magento/magento1ce": "<1.9.4.3",
                 "magento/magento1ee": ">=1,<1.14.4.3",
                 "magento/product-community-edition": ">=2,<2.2.10|>=2.3,<2.3.2-p.2",
                 "marcwillmann/turn": "<0.3.3",
-                "mautic/core": "<2.16.5|>=3,<3.2.4|= 2.13.1",
+                "mautic/core": "<3.3.2|= 2.13.1",
                 "mediawiki/core": ">=1.27,<1.27.6|>=1.29,<1.29.3|>=1.30,<1.30.2|>=1.31,<1.31.9|>=1.32,<1.32.6|>=1.32.99,<1.33.3|>=1.33.99,<1.34.3|>=1.34.99,<1.35",
                 "mittwald/typo3_forum": "<1.2.1",
                 "monolog/monolog": ">=1.8,<1.12",
+                "moodle/moodle": "<3.5.17|>=3.7,<3.7.9|>=3.8,<3.8.8|>=3.9,<3.9.5|>=3.10,<3.10.2",
                 "namshi/jose": "<2.2",
+                "neos/flow": ">=1,<1.0.4|>=1.1,<1.1.1|>=2,<2.0.1|>=2.3,<2.3.16|>=3,<3.0.12|>=3.1,<3.1.10|>=3.2,<3.2.13|>=3.3,<3.3.13|>=4,<4.0.6",
+                "neos/form": ">=1.2,<4.3.3|>=5,<5.0.9|>=5.1,<5.1.3",
+                "neos/neos": ">=1.1,<1.1.3|>=1.2,<1.2.13|>=2,<2.0.4|>=2.3,<2.9.99|>=3,<3.0.20|>=3.1,<3.1.18|>=3.2,<3.2.14|>=3.3,<3.3.23|>=4,<4.0.17|>=4.1,<4.1.16|>=4.2,<4.2.12|>=4.3,<4.3.3",
+                "neos/swiftmailer": ">=4.1,<4.1.99|>=5.4,<5.4.5",
                 "nette/application": ">=2,<2.0.19|>=2.1,<2.1.13|>=2.2,<2.2.10|>=2.3,<2.3.14|>=2.4,<2.4.16|>=3,<3.0.6",
                 "nette/nette": ">=2,<2.0.19|>=2.1,<2.1.13",
+                "nukeviet/nukeviet": "<4.3.4",
                 "nystudio107/craft-seomatic": "<3.3",
                 "nzo/url-encryptor-bundle": ">=4,<4.3.2|>=5,<5.0.1",
-                "october/backend": ">=1.0.319,<1.0.470",
-                "october/cms": "= 1.0.469|>=1.0.319,<1.0.469",
+                "october/backend": "<1.1.2",
+                "october/cms": "= 1.1.1|= 1.0.471|= 1.0.469|>=1.0.319,<1.0.469",
                 "october/october": ">=1.0.319,<1.0.466",
-                "october/rain": ">=1.0.319,<1.0.468",
+                "october/rain": "<1.0.472|>=1.1,<1.1.2",
                 "onelogin/php-saml": "<2.10.4",
                 "oneup/uploader-bundle": "<1.9.3|>=2,<2.1.5",
+                "opencart/opencart": "<=3.0.3.2",
                 "openid/php-openid": "<2.3",
-                "openmage/magento-lts": "<19.4.8|>=20,<20.0.4",
+                "openmage/magento-lts": "<=19.4.12|>=20,<=20.0.8",
                 "orchid/platform": ">=9,<9.4.4",
                 "oro/crm": ">=1.7,<1.7.4",
                 "oro/platform": ">=1.7,<1.7.4",
                 "padraic/humbug_get_contents": "<1.1.2",
                 "pagarme/pagarme-php": ">=0,<3",
+                "pagekit/pagekit": "<=1.0.18",
                 "paragonie/random_compat": "<2",
                 "passbolt/passbolt_api": "<2.11",
                 "paypal/merchant-sdk-php": "<3.12",
                 "pear/archive_tar": "<1.4.12",
                 "personnummer/personnummer": "<3.0.2",
+                "phanan/koel": "<5.1.4",
                 "phpfastcache/phpfastcache": ">=5,<5.0.13",
-                "phpmailer/phpmailer": "<6.1.6",
+                "phpmailer/phpmailer": "<6.5",
                 "phpmussel/phpmussel": ">=1,<1.6",
                 "phpmyadmin/phpmyadmin": "<4.9.6|>=5,<5.0.3",
                 "phpoffice/phpexcel": "<1.8.2",
                 "phpoffice/phpspreadsheet": "<1.16",
+                "phpseclib/phpseclib": "<2.0.31|>=3,<3.0.7",
                 "phpunit/phpunit": ">=4.8.19,<4.8.28|>=5.0.10,<5.6.3",
                 "phpwhois/phpwhois": "<=4.2.5",
                 "phpxmlrpc/extras": "<0.6.1",
-                "pimcore/pimcore": "<6.3",
+                "pimcore/pimcore": "<10.0.7",
                 "pocketmine/pocketmine-mp": "<3.15.4",
+                "pressbooks/pressbooks": "<5.18",
                 "prestashop/autoupgrade": ">=4,<4.10.1",
                 "prestashop/contactform": ">1.0.1,<4.3",
                 "prestashop/gamification": "<2.3.2",
                 "prestashop/productcomments": ">=4,<4.2.1",
+                "prestashop/ps_emailsubscription": "<2.6.1",
                 "prestashop/ps_facetedsearch": "<3.4.1",
                 "privatebin/privatebin": "<1.2.2|>=1.3,<1.3.2",
                 "propel/propel": ">=2-alpha.1,<=2-alpha.7",
                 "propel/propel1": ">=1,<=1.7.1",
                 "pterodactyl/panel": "<0.7.19|>=1-rc.0,<=1-rc.6",
                 "pusher/pusher-php-server": "<2.2.1",
+                "pwweb/laravel-core": "<=0.3.6-beta",
                 "rainlab/debugbar-plugin": "<3.1",
+                "rmccue/requests": ">=1.6,<1.8",
                 "robrichards/xmlseclibs": "<3.0.4",
                 "sabberworm/php-css-parser": ">=1,<1.0.1|>=2,<2.0.1|>=3,<3.0.1|>=4,<4.0.1|>=5,<5.0.9|>=5.1,<5.1.3|>=5.2,<5.2.1|>=6,<6.0.2|>=7,<7.0.4|>=8,<8.0.1|>=8.1,<8.1.1|>=8.2,<8.2.1|>=8.3,<8.3.1",
                 "sabre/dav": ">=1.6,<1.6.99|>=1.7,<1.7.11|>=1.8,<1.8.9",
                 "scheb/two-factor-bundle": ">=0,<3.26|>=4,<4.11",
                 "sensiolabs/connect": "<4.2.3",
                 "serluck/phpwhois": "<=4.2.6",
-                "shopware/core": "<=6.3.4",
-                "shopware/platform": "<=6.3.4",
-                "shopware/shopware": "<5.6.9",
+                "shopware/core": "<=6.4.1",
+                "shopware/platform": "<=6.4.1",
+                "shopware/production": "<=6.3.5.2",
+                "shopware/shopware": "<=5.6.9",
                 "silverstripe/admin": ">=1.0.3,<1.0.4|>=1.1,<1.1.1",
                 "silverstripe/assets": ">=1,<1.4.7|>=1.5,<1.5.2",
                 "silverstripe/cms": "<4.3.6|>=4.4,<4.4.4",
                 "silverstripe/comments": ">=1.3,<1.9.99|>=2,<2.9.99|>=3,<3.1.1",
                 "silverstripe/forum": "<=0.6.1|>=0.7,<=0.7.3",
-                "silverstripe/framework": "<4.4.7|>=4.5,<4.5.4",
-                "silverstripe/graphql": ">=2,<2.0.5|>=3,<3.1.2|>=3.2,<3.2.4",
+                "silverstripe/framework": "<4.7.4",
+                "silverstripe/graphql": "<=3.5|>=4-alpha.1,<4-alpha.2",
                 "silverstripe/registry": ">=2.1,<2.1.2|>=2.2,<2.2.1",
                 "silverstripe/restfulserver": ">=1,<1.0.9|>=2,<2.0.4",
                 "silverstripe/subsites": ">=2,<2.1.1",
@@ -2439,21 +2483,23 @@
                 "simplesamlphp/simplesamlphp-module-infocard": "<1.0.1",
                 "simplito/elliptic-php": "<1.0.6",
                 "slim/slim": "<2.6",
-                "smarty/smarty": "<3.1.33",
+                "smarty/smarty": "<3.1.39",
                 "socalnick/scn-social-auth": "<1.15.2",
+                "socialiteproviders/steam": "<1.1",
                 "spoonity/tcpdf": "<6.2.22",
                 "squizlabs/php_codesniffer": ">=1,<2.8.1|>=3,<3.0.1",
                 "ssddanbrown/bookstack": "<0.29.2",
                 "stormpath/sdk": ">=0,<9.9.99",
-                "studio-42/elfinder": "<2.1.49",
-                "sulu/sulu": "<1.6.34|>=2,<2.0.10|>=2.1,<2.1.1",
+                "studio-42/elfinder": "<2.1.59",
+                "sulu/sulu": "<1.6.41|>=2,<2.0.10|>=2.1,<2.1.1",
                 "swiftmailer/swiftmailer": ">=4,<5.4.5",
                 "sylius/admin-bundle": ">=1,<1.0.17|>=1.1,<1.1.9|>=1.2,<1.2.2",
                 "sylius/grid": ">=1,<1.1.19|>=1.2,<1.2.18|>=1.3,<1.3.13|>=1.4,<1.4.5|>=1.5,<1.5.1",
                 "sylius/grid-bundle": ">=1,<1.1.19|>=1.2,<1.2.18|>=1.3,<1.3.13|>=1.4,<1.4.5|>=1.5,<1.5.1",
                 "sylius/resource-bundle": "<1.3.14|>=1.4,<1.4.7|>=1.5,<1.5.2|>=1.6,<1.6.4",
-                "sylius/sylius": "<1.6.9|>=1.7,<1.7.9|>=1.8,<1.8.3",
+                "sylius/sylius": "<1.6.9|>=1.7,<1.7.9|>=1.8,<1.8.3|>=1.9,<1.9.5",
                 "symbiote/silverstripe-multivaluefield": ">=3,<3.0.99",
+                "symbiote/silverstripe-queuedjobs": ">=3,<3.0.2|>=3.1,<3.1.4|>=4,<4.0.7|>=4.1,<4.1.2|>=4.2,<4.2.4|>=4.3,<4.3.3|>=4.4,<4.4.3|>=4.5,<4.5.1|>=4.6,<4.6.4",
                 "symbiote/silverstripe-versionedfiles": "<=2.0.3",
                 "symfony/cache": ">=3.1,<3.4.35|>=4,<4.2.12|>=4.3,<4.3.8",
                 "symfony/dependency-injection": ">=2,<2.0.17|>=2.7,<2.7.51|>=2.8,<2.8.50|>=3,<3.4.26|>=4,<4.1.12|>=4.2,<4.2.7",
@@ -2463,44 +2509,54 @@
                 "symfony/http-foundation": ">=2,<2.8.52|>=3,<3.4.35|>=4,<4.2.12|>=4.3,<4.3.8|>=4.4,<4.4.7|>=5,<5.0.7",
                 "symfony/http-kernel": ">=2,<2.8.52|>=3,<3.4.35|>=4,<4.2.12|>=4.3,<4.4.13|>=5,<5.1.5",
                 "symfony/intl": ">=2.7,<2.7.38|>=2.8,<2.8.31|>=3,<3.2.14|>=3.3,<3.3.13",
+                "symfony/maker-bundle": ">=1.27,<1.29.2|>=1.30,<1.31.1",
                 "symfony/mime": ">=4.3,<4.3.8",
                 "symfony/phpunit-bridge": ">=2.8,<2.8.50|>=3,<3.4.26|>=4,<4.1.12|>=4.2,<4.2.7",
                 "symfony/polyfill": ">=1,<1.10",
                 "symfony/polyfill-php55": ">=1,<1.10",
                 "symfony/proxy-manager-bridge": ">=2.7,<2.7.51|>=2.8,<2.8.50|>=3,<3.4.26|>=4,<4.1.12|>=4.2,<4.2.7",
                 "symfony/routing": ">=2,<2.0.19",
-                "symfony/security": ">=2,<2.7.51|>=2.8,<2.8.50|>=3,<3.4.26|>=4,<4.1.12|>=4.2,<4.2.7|>=4.4,<4.4.7|>=5,<5.0.7",
+                "symfony/security": ">=2,<2.7.51|>=2.8,<3.4.49|>=4,<4.4.24|>=5,<5.2.8",
                 "symfony/security-bundle": ">=2,<2.7.48|>=2.8,<2.8.41|>=3,<3.3.17|>=3.4,<3.4.11|>=4,<4.0.11",
-                "symfony/security-core": ">=2.4,<2.6.13|>=2.7,<2.7.9|>=2.7.30,<2.7.32|>=2.8,<2.8.37|>=3,<3.3.17|>=3.4,<3.4.7|>=4,<4.0.7",
+                "symfony/security-core": ">=2.4,<2.6.13|>=2.7,<2.7.9|>=2.7.30,<2.7.32|>=2.8,<3.4.49|>=4,<4.4.24|>=5,<5.2.9",
                 "symfony/security-csrf": ">=2.4,<2.7.48|>=2.8,<2.8.41|>=3,<3.3.17|>=3.4,<3.4.11|>=4,<4.0.11",
-                "symfony/security-guard": ">=2.8,<2.8.41|>=3,<3.3.17|>=3.4,<3.4.11|>=4,<4.0.11",
-                "symfony/security-http": ">=2.3,<2.3.41|>=2.4,<2.7.51|>=2.8,<2.8.50|>=3,<3.4.26|>=4,<4.2.12|>=4.3,<4.3.8|>=4.4,<4.4.7|>=5,<5.0.7",
+                "symfony/security-guard": ">=2.8,<3.4.48|>=4,<4.4.23|>=5,<5.2.8",
+                "symfony/security-http": ">=2.3,<2.3.41|>=2.4,<2.7.51|>=2.8,<3.4.48|>=4,<4.4.23|>=5,<5.2.8|>=5.3,<5.3.2",
                 "symfony/serializer": ">=2,<2.0.11",
-                "symfony/symfony": ">=2,<2.8.52|>=3,<3.4.35|>=4,<4.2.12|>=4.3,<4.4.13|>=5,<5.1.5",
+                "symfony/symfony": ">=2,<3.4.49|>=4,<4.4.24|>=5,<5.2.9|>=5.3,<5.3.2",
                 "symfony/translation": ">=2,<2.0.17",
                 "symfony/validator": ">=2,<2.0.24|>=2.1,<2.1.12|>=2.2,<2.2.5|>=2.3,<2.3.3",
                 "symfony/var-exporter": ">=4.2,<4.2.12|>=4.3,<4.3.8",
                 "symfony/web-profiler-bundle": ">=2,<2.3.19|>=2.4,<2.4.9|>=2.5,<2.5.4",
                 "symfony/yaml": ">=2,<2.0.22|>=2.1,<2.1.7",
+                "t3/dce": ">=2.2,<2.6.2",
                 "t3g/svg-sanitizer": "<1.0.3",
                 "tecnickcom/tcpdf": "<6.2.22",
                 "thelia/backoffice-default-template": ">=2.1,<2.1.2",
                 "thelia/thelia": ">=2.1-beta.1,<2.1.3",
                 "theonedemon/phpwhois": "<=4.2.5",
                 "titon/framework": ">=0,<9.9.99",
+                "tribalsystems/zenario": "<8.8.53370",
                 "truckersmp/phpwhois": "<=4.3.1",
                 "twig/twig": "<1.38|>=2,<2.7",
-                "typo3/cms": ">=6.2,<6.2.30|>=7,<7.6.32|>=8,<8.7.38|>=9,<9.5.23|>=10,<10.4.10",
-                "typo3/cms-core": ">=8,<8.7.38|>=9,<9.5.23|>=10,<10.4.10",
-                "typo3/flow": ">=1,<1.0.4|>=1.1,<1.1.1|>=2,<2.0.1|>=2.3,<2.3.16|>=3,<3.0.10|>=3.1,<3.1.7|>=3.2,<3.2.7|>=3.3,<3.3.5",
-                "typo3/neos": ">=1.1,<1.1.3|>=1.2,<1.2.13|>=2,<2.0.4",
+                "typo3/cms": ">=6.2,<6.2.30|>=7,<7.6.32|>=8,<8.7.38|>=9,<9.5.25|>=10,<10.4.14|>=11,<11.1.1",
+                "typo3/cms-backend": ">=7,<=7.6.50|>=8,<=8.7.39|>=9,<=9.5.24|>=10,<=10.4.13|>=11,<=11.1",
+                "typo3/cms-core": ">=6.2,<=6.2.56|>=7,<=7.6.50|>=8,<=8.7.39|>=9,<9.5.25|>=10,<10.4.14|>=11,<11.1.1",
+                "typo3/cms-form": ">=8,<=8.7.39|>=9,<=9.5.24|>=10,<=10.4.13|>=11,<=11.1",
+                "typo3/flow": ">=1,<1.0.4|>=1.1,<1.1.1|>=2,<2.0.1|>=2.3,<2.3.16|>=3,<3.0.12|>=3.1,<3.1.10|>=3.2,<3.2.13|>=3.3,<3.3.13|>=4,<4.0.6",
+                "typo3/neos": ">=1.1,<1.1.3|>=1.2,<1.2.13|>=2,<2.0.4|>=2.3,<2.3.99|>=3,<3.0.20|>=3.1,<3.1.18|>=3.2,<3.2.14|>=3.3,<3.3.23|>=4,<4.0.17|>=4.1,<4.1.16|>=4.2,<4.2.12|>=4.3,<4.3.3",
                 "typo3/phar-stream-wrapper": ">=1,<2.1.1|>=3,<3.1.1",
+                "typo3/swiftmailer": ">=4.1,<4.1.99|>=5.4,<5.4.5",
                 "typo3fluid/fluid": ">=2,<2.0.8|>=2.1,<2.1.7|>=2.2,<2.2.4|>=2.3,<2.3.7|>=2.4,<2.4.4|>=2.5,<2.5.11|>=2.6,<2.6.10",
                 "ua-parser/uap-php": "<3.8",
                 "usmanhalalit/pixie": "<1.0.3|>=2,<2.0.2",
                 "verot/class.upload.php": "<=1.0.3|>=2,<=2.0.4",
+                "vrana/adminer": "<4.7.9",
                 "wallabag/tcpdf": "<6.2.22",
+                "wikimedia/parsoid": "<0.12.2",
                 "willdurand/js-translation-bundle": "<2.1.1",
+                "wp-cli/wp-cli": "<2.5",
+                "yidashi/yii2cmf": "<=2",
                 "yii2mod/yii2-cms": "<1.9.2",
                 "yiisoft/yii": ">=1.1.14,<1.1.15",
                 "yiisoft/yii2": "<2.0.38",
@@ -2510,7 +2566,9 @@
                 "yiisoft/yii2-gii": "<2.0.4",
                 "yiisoft/yii2-jui": "<2.0.4",
                 "yiisoft/yii2-redis": "<2.0.8",
+                "yoast-seo-for-typo3/yoast_seo": "<7.2.1",
                 "yourls/yourls": "<1.7.4",
+                "zendesk/zendesk_api_client_php": "<2.2.11",
                 "zendframework/zend-cache": ">=2.4,<2.4.8|>=2.5,<2.5.3",
                 "zendframework/zend-captcha": ">=2,<2.4.9|>=2.5,<2.5.2",
                 "zendframework/zend-crypt": ">=2,<2.4.9|>=2.5,<2.5.2",
@@ -2528,14 +2586,15 @@
                 "zendframework/zend-validator": ">=2.3,<2.3.6",
                 "zendframework/zend-view": ">=2,<2.2.7|>=2.3,<2.3.1",
                 "zendframework/zend-xmlrpc": ">=2.1,<2.1.6|>=2.2,<2.2.6",
-                "zendframework/zendframework": "<2.5.1",
+                "zendframework/zendframework": "<=3",
                 "zendframework/zendframework1": "<1.12.20",
                 "zendframework/zendopenid": ">=2,<2.0.2",
                 "zendframework/zendxml": ">=1,<1.0.1",
                 "zetacomponents/mail": "<1.8.2",
                 "zf-commons/zfc-user": "<1.2.2",
                 "zfcampus/zf-apigility-doctrine": ">=1,<1.0.3",
-                "zfr/zfr-oauth2-server-module": "<0.1.2"
+                "zfr/zfr-oauth2-server-module": "<0.1.2",
+                "zoujingli/thinkadmin": "<6.0.22"
             },
             "type": "metapackage",
             "notification-url": "https://packagist.org/downloads/",
@@ -2569,7 +2628,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-01-20T22:18:29+00:00"
+            "time": "2021-07-13T18:03:10+00:00"
         },
         {
             "name": "sebastian/cli-parser",
@@ -3077,16 +3136,16 @@
         },
         {
             "name": "sebastian/global-state",
-            "version": "5.0.2",
+            "version": "5.0.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/global-state.git",
-                "reference": "a90ccbddffa067b51f574dea6eb25d5680839455"
+                "reference": "23bd5951f7ff26f12d4e3242864df3e08dec4e49"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/a90ccbddffa067b51f574dea6eb25d5680839455",
-                "reference": "a90ccbddffa067b51f574dea6eb25d5680839455",
+                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/23bd5951f7ff26f12d4e3242864df3e08dec4e49",
+                "reference": "23bd5951f7ff26f12d4e3242864df3e08dec4e49",
                 "shasum": ""
             },
             "require": {
@@ -3129,7 +3188,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/global-state/issues",
-                "source": "https://github.com/sebastianbergmann/global-state/tree/5.0.2"
+                "source": "https://github.com/sebastianbergmann/global-state/tree/5.0.3"
             },
             "funding": [
                 {
@@ -3137,7 +3196,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2020-10-26T15:55:19+00:00"
+            "time": "2021-06-11T13:31:12+00:00"
         },
         {
             "name": "sebastian/lines-of-code",
@@ -3428,16 +3487,16 @@
         },
         {
             "name": "sebastian/type",
-            "version": "2.3.1",
+            "version": "2.3.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/type.git",
-                "reference": "81cd61ab7bbf2de744aba0ea61fae32f721df3d2"
+                "reference": "b8cd8a1c753c90bc1a0f5372170e3e489136f914"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/type/zipball/81cd61ab7bbf2de744aba0ea61fae32f721df3d2",
-                "reference": "81cd61ab7bbf2de744aba0ea61fae32f721df3d2",
+                "url": "https://api.github.com/repos/sebastianbergmann/type/zipball/b8cd8a1c753c90bc1a0f5372170e3e489136f914",
+                "reference": "b8cd8a1c753c90bc1a0f5372170e3e489136f914",
                 "shasum": ""
             },
             "require": {
@@ -3472,7 +3531,7 @@
             "homepage": "https://github.com/sebastianbergmann/type",
             "support": {
                 "issues": "https://github.com/sebastianbergmann/type/issues",
-                "source": "https://github.com/sebastianbergmann/type/tree/2.3.1"
+                "source": "https://github.com/sebastianbergmann/type/tree/2.3.4"
             },
             "funding": [
                 {
@@ -3480,7 +3539,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2020-10-26T13:18:59+00:00"
+            "time": "2021-06-15T12:49:02+00:00"
         },
         {
             "name": "sebastian/version",
@@ -3537,16 +3596,16 @@
         },
         {
             "name": "symfony/polyfill-ctype",
-            "version": "v1.22.0",
+            "version": "v1.23.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-ctype.git",
-                "reference": "c6c942b1ac76c82448322025e084cadc56048b4e"
+                "reference": "46cd95797e9df938fdd2b03693b5fca5e64b01ce"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/c6c942b1ac76c82448322025e084cadc56048b4e",
-                "reference": "c6c942b1ac76c82448322025e084cadc56048b4e",
+                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/46cd95797e9df938fdd2b03693b5fca5e64b01ce",
+                "reference": "46cd95797e9df938fdd2b03693b5fca5e64b01ce",
                 "shasum": ""
             },
             "require": {
@@ -3558,7 +3617,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-main": "1.22-dev"
+                    "dev-main": "1.23-dev"
                 },
                 "thanks": {
                     "name": "symfony/polyfill",
@@ -3596,7 +3655,7 @@
                 "portable"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-ctype/tree/v1.22.0"
+                "source": "https://github.com/symfony/polyfill-ctype/tree/v1.23.0"
             },
             "funding": [
                 {
@@ -3612,7 +3671,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-01-07T16:49:33+00:00"
+            "time": "2021-02-19T12:13:01+00:00"
         },
         {
             "name": "theseer/tokenizer",
@@ -3666,30 +3725,35 @@
         },
         {
             "name": "webmozart/assert",
-            "version": "1.9.1",
+            "version": "1.10.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/webmozarts/assert.git",
-                "reference": "bafc69caeb4d49c39fd0779086c03a3738cbb389"
+                "reference": "6964c76c7804814a842473e0c8fd15bab0f18e25"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/webmozarts/assert/zipball/bafc69caeb4d49c39fd0779086c03a3738cbb389",
-                "reference": "bafc69caeb4d49c39fd0779086c03a3738cbb389",
+                "url": "https://api.github.com/repos/webmozarts/assert/zipball/6964c76c7804814a842473e0c8fd15bab0f18e25",
+                "reference": "6964c76c7804814a842473e0c8fd15bab0f18e25",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3.3 || ^7.0 || ^8.0",
+                "php": "^7.2 || ^8.0",
                 "symfony/polyfill-ctype": "^1.8"
             },
             "conflict": {
                 "phpstan/phpstan": "<0.12.20",
-                "vimeo/psalm": "<3.9.1"
+                "vimeo/psalm": "<4.6.1 || 4.6.2"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.8.36 || ^7.5.13"
+                "phpunit/phpunit": "^8.5.13"
             },
             "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.10-dev"
+                }
+            },
             "autoload": {
                 "psr-4": {
                     "Webmozart\\Assert\\": "src/"
@@ -3713,20 +3777,21 @@
             ],
             "support": {
                 "issues": "https://github.com/webmozarts/assert/issues",
-                "source": "https://github.com/webmozarts/assert/tree/1.9.1"
+                "source": "https://github.com/webmozarts/assert/tree/1.10.0"
             },
-            "time": "2020-07-08T17:02:28+00:00"
+            "time": "2021-03-09T10:59:23+00:00"
         }
     ],
     "aliases": [],
     "minimum-stability": "stable",
     "stability-flags": {
+        "codeigniter/framework": 20,
         "roave/security-advisories": 20
     },
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": ">=7.0",
+        "php": ">=7.3",
         "ext-curl": "*",
         "ext-json": "*",
         "ext-mbstring": "*",

From ea8798d2a63362ffd1693d05e06d73ba6fb11c62 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 14:03:40 +0300
Subject: [PATCH 13/72] The model base class needs a constructor when running
 the app with PHP8.0

---
 application/core/EA_Model.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/application/core/EA_Model.php b/application/core/EA_Model.php
index 3e66a3e7..58c1ffc8 100644
--- a/application/core/EA_Model.php
+++ b/application/core/EA_Model.php
@@ -58,5 +58,11 @@
  * @property Timezones $timezones
  */
 class EA_Model extends CI_Model {
-    //
+    /**
+     * EA_Model constructor.
+     */
+    public function __construct()
+    {
+        //
+    }
 }

From 25b44063b479c21369c6a916ecf0a925d161eb83 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 14:27:52 +0300
Subject: [PATCH 14/72] Updated dependencies in the package-lock.json file.

---
 package-lock.json | 19342 +++++++++++++++++++++-----------------------
 1 file changed, 9211 insertions(+), 10131 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 6af24e28..19498193 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,46 +1,7652 @@
 {
   "name": "easyappointments",
+  "lockfileVersion": 2,
   "requires": true,
-  "lockfileVersion": 1,
+  "packages": {
+    "": {
+      "license": "GPL-3.0",
+      "dependencies": {
+        "@fortawesome/fontawesome-free": "^5.15.1",
+        "bootstrap": "^4.5.3",
+        "cookieconsent": "^3.1.1",
+        "datejs": "0.0.2",
+        "del": "^6.0.0",
+        "fullcalendar": "^3.10.2",
+        "jquery": "^3.5.1",
+        "jquery-ui": "^1.12.0",
+        "moment": "^2.29.1",
+        "moment-timezone": "^0.5.31",
+        "tippy.js": "^6.2.7",
+        "trumbowyg": "^2.21.0"
+      },
+      "devDependencies": {
+        "fs-extra": "^0.26.7",
+        "gulp": "^4.0.2",
+        "gulp-changed": "^3.2.0",
+        "gulp-clean-css": "^3.10.0",
+        "gulp-debug": "^4.0.0",
+        "gulp-load-plugins": "^1.6.0",
+        "gulp-notify": "^3.2.0",
+        "gulp-plumber": "^1.2.1",
+        "gulp-rename": "^1.4.0",
+        "gulp-uglify": "^3.0.2",
+        "jsdoc": "^3.6.6",
+        "node-notifier": "^8.0.1",
+        "plato": "^1.7.0",
+        "zip-dir": "^1.0.2"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@babel/parser": {
+      "version": "7.14.7",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.14.7.tgz",
+      "integrity": "sha512-X67Z5y+VBJuHB/RjwECp8kSl5uYi0BvRbNeWqkaJCVh+LiTPl19WBUfG627psSgp9rSf6ojuXghQM3ha6qHHdA==",
+      "dev": true,
+      "bin": {
+        "parser": "bin/babel-parser.js"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@fortawesome/fontawesome-free": {
+      "version": "5.15.3",
+      "resolved": "https://registry.npmjs.org/@fortawesome/fontawesome-free/-/fontawesome-free-5.15.3.tgz",
+      "integrity": "sha512-rFnSUN/QOtnOAgqFRooTA3H57JLDm0QEG/jPdk+tLQNL/eWd+Aok8g3qCI+Q1xuDPWpGW/i9JySpJVsq8Q0s9w==",
+      "hasInstallScript": true,
+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/@nodelib/fs.scandir": {
+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
+      "integrity": "sha512-vq24Bq3ym5HEQm2NKCr3yXDwjc7vTsEThRDnkp2DK9p1uqLR+DHurm/NOTo0KG7HYHU7eppKZj3MyqYuMBf62g==",
+      "dependencies": {
+        "@nodelib/fs.stat": "2.0.5",
+        "run-parallel": "^1.1.9"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/@nodelib/fs.stat": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-2.0.5.tgz",
+      "integrity": "sha512-RkhPPp2zrqDAQA/2jNhnztcPAlv64XdhIp7a7454A5ovI7Bukxgt7MX7udwAu3zg1DcpPU0rz3VV1SeaqvY4+A==",
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/@nodelib/fs.walk": {
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.walk/-/fs.walk-1.2.8.tgz",
+      "integrity": "sha512-oGB+UxlgWcgQkgwo8GcEGwemoTFt3FIO9ababBmaGwXIoBKZ+GTy0pP185beGg7Llih/NSHSV2XAs1lnznocSg==",
+      "dependencies": {
+        "@nodelib/fs.scandir": "2.1.5",
+        "fastq": "^1.6.0"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/@popperjs/core": {
+      "version": "2.9.2",
+      "resolved": "https://registry.npmjs.org/@popperjs/core/-/core-2.9.2.tgz",
+      "integrity": "sha512-VZMYa7+fXHdwIq1TDhSXoVmSPEGM/aa+6Aiq3nVVJ9bXr24zScr+NlKFKC3iPljA7ho/GAZr+d2jOf5GIRC30Q==",
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/popperjs"
+      }
+    },
+    "node_modules/abbrev": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
+      "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==",
+      "dev": true
+    },
+    "node_modules/acorn": {
+      "version": "5.7.4",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
+      "integrity": "sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==",
+      "dev": true,
+      "bin": {
+        "acorn": "bin/acorn"
+      },
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
+    "node_modules/acorn-jsx": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
+      "integrity": "sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=",
+      "dev": true,
+      "dependencies": {
+        "acorn": "^3.0.4"
+      }
+    },
+    "node_modules/acorn-jsx/node_modules/acorn": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
+      "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
+      "dev": true,
+      "bin": {
+        "acorn": "bin/acorn"
+      },
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
+    "node_modules/aggregate-error": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/aggregate-error/-/aggregate-error-3.1.0.tgz",
+      "integrity": "sha512-4I7Td01quW/RpocfNayFdFVk1qSuoh0E7JrbRJ16nH01HhKFQ88INq9Sd+nd72zqRySlr9BmDA8xlEJ6vJMrYA==",
+      "dependencies": {
+        "clean-stack": "^2.0.0",
+        "indent-string": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/ajv": {
+      "version": "4.11.8",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-4.11.8.tgz",
+      "integrity": "sha1-gv+wKynmYq5TvcIK8VlHcGc5xTY=",
+      "dev": true,
+      "dependencies": {
+        "co": "^4.6.0",
+        "json-stable-stringify": "^1.0.1"
+      }
+    },
+    "node_modules/ajv-keywords": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-1.5.1.tgz",
+      "integrity": "sha1-MU3QpLM2j609/NxU7eYXG4htrzw=",
+      "dev": true,
+      "peerDependencies": {
+        "ajv": ">=4.10.0"
+      }
+    },
+    "node_modules/ansi-colors": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-1.1.0.tgz",
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       "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.2.tgz",
-      "integrity": "sha512-uGZHXkHnhF0XeeAPgnKfPv1bgKAYyVvmNL1xlKsPYZPaIHxGti2hHqvOCQv71XMsLxu1QjergkqogUnms5D3YQ=="
+      "integrity": "sha512-uGZHXkHnhF0XeeAPgnKfPv1bgKAYyVvmNL1xlKsPYZPaIHxGti2hHqvOCQv71XMsLxu1QjergkqogUnms5D3YQ==",
+      "dev": true
     },
     "yallist": {
       "version": "4.0.0",
@@ -14567,9 +13646,9 @@
       "dev": true
     },
     "yargs": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-7.1.0.tgz",
-      "integrity": "sha1-a6MY6xaWFyf10oT46gA+jWFU0Mg=",
+      "version": "7.1.2",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-7.1.2.tgz",
+      "integrity": "sha512-ZEjj/dQYQy0Zx0lgLMLR8QuaqTihnxirir7EwUHp1Axq4e3+k8jXU5K0VLbNvedv1f4EWtBonDIZm0NUr+jCcA==",
       "dev": true,
       "requires": {
         "camelcase": "^3.0.0",
@@ -14584,16 +13663,17 @@
         "string-width": "^1.0.2",
         "which-module": "^1.0.0",
         "y18n": "^3.2.1",
-        "yargs-parser": "^5.0.0"
+        "yargs-parser": "^5.0.1"
       }
     },
     "yargs-parser": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-5.0.0.tgz",
-      "integrity": "sha1-J17PDX/+Bcd+ZOfIbkzZS/DhIoo=",
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-5.0.1.tgz",
+      "integrity": "sha512-wpav5XYiddjXxirPoCTUPbqM0PXvJ9hiBMvuJgInvo4/lAOTZzUprArw17q2O1P2+GHhbBr18/iQwjL5Z9BqfA==",
       "dev": true,
       "requires": {
-        "camelcase": "^3.0.0"
+        "camelcase": "^3.0.0",
+        "object.assign": "^4.1.0"
       }
     },
     "zip-dir": {

From cc6575d2d0430f61b7e5e9c541ecb307c05df44e Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 15:52:05 +0300
Subject: [PATCH 15/72] JavaScript RangeError on appointment change causing
 disabled calendar dates (#1092).

---
 assets/js/frontend_book_api.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/assets/js/frontend_book_api.js b/assets/js/frontend_book_api.js
index 68c708e4..7593c82c 100755
--- a/assets/js/frontend_book_api.js
+++ b/assets/js/frontend_book_api.js
@@ -274,7 +274,7 @@ window.FrontendBookApi = window.FrontendBookApi || {};
 
         // Select first enabled date.
         var selectedDate = Date.parse(selectedDateString);
-        var numberOfDays = new Date(selectedDate.getFullYear(), selectedDate.getMonth() + 1, 0).getDate();
+        var numberOfDays = moment(selectedDate).daysInMonth();
 
         if (setDate && !GlobalVariables.manageMode) {
             for (var i = 1; i <= numberOfDays; i++) {

From 39cc1b5a0b6afb3338d17e84fbfd41732b62775b Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 16:02:45 +0300
Subject: [PATCH 16/72] Timezone/UX issue: Wrong day is selected when timezone
 differs by -1 day (#961).

---
 assets/js/frontend_book_api.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/assets/js/frontend_book_api.js b/assets/js/frontend_book_api.js
index 7593c82c..f544011b 100755
--- a/assets/js/frontend_book_api.js
+++ b/assets/js/frontend_book_api.js
@@ -99,6 +99,10 @@ window.FrontendBookApi = window.FrontendBookApi || {};
                         var availableHourMoment = moment
                             .tz(selectedDate + ' ' + availableHour + ':00', providerTimezone)
                             .tz(selectedTimezone);
+                        
+                        if (availableHourMoment.format('YYYY-MM-DD') !== selectedDate) {
+                            return; // Due to the selected timezone the available hour belongs to another date.  
+                        }
 
                         $('#available-hours').append(
                             $('<button/>', {
@@ -127,8 +131,9 @@ window.FrontendBookApi = window.FrontendBookApi || {};
                     }
 
                     FrontendBook.updateConfirmFrame();
+                }
 
-                } else {
+                if (!$('.available-hour').length) {
                     $('#available-hours').text(EALang.no_available_hours);
                 }
             });

From 5a039f2757fe8ef2782fffcbcf7c32ec57fc649f Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 16:07:26 +0300
Subject: [PATCH 17/72] Missing Pacific (and potentially other) timezones
 (#980).

---
 application/libraries/Timezones.php | 38 +++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/application/libraries/Timezones.php b/application/libraries/Timezones.php
index 357bca0b..9df4a4c9 100644
--- a/application/libraries/Timezones.php
+++ b/application/libraries/Timezones.php
@@ -458,6 +458,44 @@ class Timezones {
             'Australia/LHI' => 'LHI (+10:30)',
             'Australia/Lord_Howe' => 'Lord_Howe (+10:30)',
         ],
+        'Pacific' => [
+            'Pacific/Apia' => 'Apia (+13:00)',
+            'Pacific/Auckland' => 'Auckland (+12:00)',
+            'Pacific/Bougainville' => 'Bougainville (+11:00)',
+            'Pacific/Chatham' => 'Chatham (+12:45)',
+            'Pacific/Chuuk' => 'Chuuk (+10:00)',
+            'Pacific/Easter' => 'Easter (−06:00)',
+            'Pacific/Efate' => 'Efate (+11:00)',
+            'Pacific/Enderbury' => 'Enderbury (+13:00)',
+            'Pacific/Fakaofo' => 'Fakaofo (+13:00)',
+            'Pacific/Fiji' => 'Fiji (+12:00)',
+            'Pacific/Funafuti' => 'Funafuti (+12:00)',
+            'Pacific/Galapagos' => 'Galapagos (−06:00)',
+            'Pacific/Gambier' => 'Gambier (−09:00)',
+            'Pacific/Guadalcanal' => 'Guadalcanal (+11:00)',
+            'Pacific/Guam' => 'Guam (+10:00)',
+            'Pacific/Honolulu' => 'Honolulu (−10:00)',
+            'Pacific/Kiritimati' => 'Kiritimati (+14:00)',
+            'Pacific/Kosrae' => 'Kosrae (+11:00)',
+            'Pacific/Kwajalein' => 'Kwajalein (+12:00)',
+            'Pacific/Majuro' => 'Majuro (+12:00)',
+            'Pacific/Marquesas' => 'Marquesas (−09:30)',
+            'Pacific/Nauru' => 'Nauru (+12:00)',
+            'Pacific/Niue' => 'Niue (−11:00)',
+            'Pacific/Norfolk' => 'Norfolk (+11:00)',
+            'Pacific/Noumea' => 'Noumea (+11:00)',
+            'Pacific/Pago_Pago' => 'Pago_Pago (−11:00)',
+            'Pacific/Palau' => 'Palau (+09:00)',
+            'Pacific/Pitcairn' => 'Pitcairn (−08:00)',
+            'Pacific/Pohnpei' => 'Pohnpei (+11:00)',
+            'Pacific/Port_Moresby' => 'Port_Moresby (+10:00)',
+            'Pacific/Rarotonga' => 'Rarotonga (−10:00)',
+            'Pacific/Tahiti' => 'Tahiti (−10:00)',
+            'Pacific/Tarawa' => 'Tarawa (+12:00)',
+            'Pacific/Tongatapu' => 'Tongatapu (+13:00)',
+            'Pacific/Wake' => 'Wake (+12:00)',
+            'Pacific/Wallis' => 'Wallis (+12:00)',
+        ],
     ];
 
     /**

From c885b27f7d58b92b496a4023e5060ae9e13715d1 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 16:14:37 +0300
Subject: [PATCH 18/72] Add support for line breaks when displaying the service
 description in the frontend (#1004).

---
 assets/js/frontend_book.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/assets/js/frontend_book.js b/assets/js/frontend_book.js
index 389d7770..79cbd991 100644
--- a/assets/js/frontend_book.js
+++ b/assets/js/frontend_book.js
@@ -745,7 +745,7 @@ window.FrontendBook = window.FrontendBook || {};
                 .appendTo($serviceDescription);
 
             $('<span/>', {
-                'text': service.description
+                'html': GeneralFunctions.escapeHtml(service.description).replaceAll('\n', '<br/>')
             })
                 .appendTo($serviceDescription);
         }

From 23bcc2d468bb13c867796b96396ba4c143415736 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 16:21:14 +0300
Subject: [PATCH 19/72] Working plan exception - details pane shows incorrect
 details (#1011).

---
 assets/js/backend_calendar_default_view.js | 6 +++---
 assets/js/backend_calendar_table_view.js   | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/assets/js/backend_calendar_default_view.js b/assets/js/backend_calendar_default_view.js
index 03ca8e8a..83e32d35 100755
--- a/assets/js/backend_calendar_default_view.js
+++ b/assets/js/backend_calendar_default_view.js
@@ -447,7 +447,7 @@ window.BackendCalendarDefaultView = window.BackendCalendarDefaultView || {};
                         'text': EALang.start
                     }),
                     $('<span/>', {
-                        'text': GeneralFunctions.formatDate(event.start.format('YYYY-MM-DD HH:mm:ss'), GlobalVariables.dateFormat, true)
+                        'text': GeneralFunctions.formatDate(event.data.date + ' ' + event.data.workingPlanException.start, GlobalVariables.dateFormat, true)
                     }),
                     $('<br/>'),
 
@@ -456,7 +456,7 @@ window.BackendCalendarDefaultView = window.BackendCalendarDefaultView || {};
                         'text': EALang.end
                     }),
                     $('<span/>', {
-                        'text': GeneralFunctions.formatDate(event.end.format('YYYY-MM-DD HH:mm:ss'), GlobalVariables.dateFormat, true)
+                        'text': GeneralFunctions.formatDate(event.data.date + ' ' + event.data.workingPlanException.end, GlobalVariables.dateFormat, true)
                     }),
                     $('<br/>'),
 
@@ -475,7 +475,7 @@ window.BackendCalendarDefaultView = window.BackendCalendarDefaultView || {};
                         'class': 'd-flex justify-content-between',
                         'html': [
                             $('<button/>', {
-                                'class': 'close-popover btn btn-outline-secondary',
+                                'class': 'close-popover btn btn-outline-secondary mr-2',
                                 'html': [
                                     $('<i/>', {
                                         'class': 'fas fa-ban mr-2'
diff --git a/assets/js/backend_calendar_table_view.js b/assets/js/backend_calendar_table_view.js
index 466e63e7..b45f270a 100755
--- a/assets/js/backend_calendar_table_view.js
+++ b/assets/js/backend_calendar_table_view.js
@@ -1186,7 +1186,7 @@ window.BackendCalendarTableView = window.BackendCalendarTableView || {};
                         'text': EALang.start
                     }),
                     $('<span/>', {
-                        'text': GeneralFunctions.formatDate(event.start.format('YYYY-MM-DD HH:mm:ss'), GlobalVariables.dateFormat, true)
+                        'text': GeneralFunctions.formatDate(event.data.date + ' ' + event.data.workingPlanException.start, GlobalVariables.dateFormat, true)
                     }),
                     $('<br/>'),
 
@@ -1194,7 +1194,7 @@ window.BackendCalendarTableView = window.BackendCalendarTableView || {};
                         'text': EALang.end
                     }),
                     $('<span/>', {
-                        'text': GeneralFunctions.formatDate(event.end.format('YYYY-MM-DD HH:mm:ss'), GlobalVariables.dateFormat, true)
+                        'text': GeneralFunctions.formatDate(event.data.date + ' ' + event.data.workingPlanException.end, GlobalVariables.dateFormat, true)
                     }),
                     $('<br/>'),
 

From d09fbb0ad6ee4638ca0aa1d764b38a64164022ae Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 16:30:27 +0300
Subject: [PATCH 20/72] Make sure that saving the modifications of a single
 break does not cancel any pending break edits. #1046

---
 assets/js/working_plan.js | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/assets/js/working_plan.js b/assets/js/working_plan.js
index 7de8926e..99bd9309 100755
--- a/assets/js/working_plan.js
+++ b/assets/js/working_plan.js
@@ -437,7 +437,6 @@
             this.editableDayCell($newBreak.find('.break-day'));
             this.editableTimeCell($newBreak.find('.break-start, .break-end'));
             $newBreak.find('.edit-break').trigger('click');
-            $('.add-break').prop('disabled', true);
         }.bind(this));
 
         /**
@@ -473,8 +472,6 @@
             $tr.find('.edit-break, .delete-break').addClass('d-none');
             $tr.find('.save-break, .cancel-break').removeClass('d-none');
             $tr.find('select,input:text').addClass('form-control input-sm')
-
-            $('.add-break').prop('disabled', true);
         });
 
         /**
@@ -502,7 +499,6 @@
 
             $(element).closest('table').find('.edit-break, .delete-break').removeClass('d-none');
             $modifiedRow.find('.save-break, .cancel-break').addClass('d-none');
-            $('.add-break').prop('disabled', false);
         }.bind(this));
 
         /**
@@ -528,12 +524,7 @@
             this.enableSubmit = false;
 
             $modifiedRow.find('.save-break, .cancel-break').addClass('d-none');
-            $(element).closest('table').find('.edit-break, .delete-break').removeClass('d-none');
-            $('.add-break').prop('disabled', false);
-
-            // Refresh working plan to have the new break sorted in the break list.
-            var workingPlan = this.get();
-            this.setup(workingPlan);
+            $modifiedRow.find('.edit-break, .delete-break').removeClass('d-none');
         }.bind(this));
 
         /**

From 9ddc820176c7537974b070bea2f86e13e0749524 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 16:59:21 +0300
Subject: [PATCH 21/72] Set minimum service duration field value to honor the
 value of EVENT_MINIMUM_DURATION. #1068

---
 application/views/backend/services.php     | 2 +-
 assets/css/backend.css                     | 1 +
 assets/js/backend_calendar_default_view.js | 2 ++
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/application/views/backend/services.php b/application/views/backend/services.php
index 80dd48ed..444d2c6d 100755
--- a/application/views/backend/services.php
+++ b/application/views/backend/services.php
@@ -116,7 +116,7 @@
                             <?= lang('duration_minutes') ?>
                             <span class="text-danger">*</span>
                         </label>
-                        <input id="service-duration" class="form-control required" type="number" min="5">
+                        <input id="service-duration" class="form-control required" type="number" min="<?= EVENT_MINIMUM_DURATION ?>">
                     </div>
 
                     <div class="form-group">
diff --git a/assets/css/backend.css b/assets/css/backend.css
index 7351c02b..03de3a70 100644
--- a/assets/css/backend.css
+++ b/assets/css/backend.css
@@ -427,6 +427,7 @@ body legend {
 #calendar .fc-event {
     border: 1px solid #4790CA;
     background-color: #4790CA;
+    min-height: 12px; 
 }
 
 #existing-customers-list {
diff --git a/assets/js/backend_calendar_default_view.js b/assets/js/backend_calendar_default_view.js
index 83e32d35..9f9275be 100755
--- a/assets/js/backend_calendar_default_view.js
+++ b/assets/js/backend_calendar_default_view.js
@@ -1413,7 +1413,9 @@ window.BackendCalendarDefaultView = window.BackendCalendarDefaultView || {};
             height: getCalendarHeight(),
             editable: true,
             firstDay: firstWeekdayNumber,
+            slotDuration: '00:15:00', 
             snapDuration: '00:15:00',
+            slotLabelInterval: '01:00',
             timeFormat: timeFormat,
             slotLabelFormat: slotTimeFormat,
             allDayText: EALang.all_day,

From 5d513ea43fc65c7af5734bb3e69d2eec718c2261 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 16:59:41 +0300
Subject: [PATCH 22/72] Resolve availability generation issue with 5 minute
 services.

---
 application/libraries/Availability.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/application/libraries/Availability.php b/application/libraries/Availability.php
index 5cfe0786..204a03e2 100644
--- a/application/libraries/Availability.php
+++ b/application/libraries/Availability.php
@@ -307,7 +307,7 @@ class Availability {
             $current_hour = $start_hour;
             $diff = $current_hour->diff($end_hour);
 
-            while (($diff->h * 60 + $diff->i) >= (int)$service['duration'])
+            while (($diff->h * 60 + $diff->i) >= (int)$service['duration'] && $diff->invert === 0)
             {
                 $available_hours[] = $current_hour->format('H:i');
                 $current_hour->add(new DateInterval('PT' . $interval . 'M'));

From 6103b6992db3dba2d9d01beb2e9d894095f8d60c Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 17:26:24 +0300
Subject: [PATCH 23/72] The timepicker sliders do not work when using an iOS
 device. #1026

---
 application/views/backend/header.php              |  1 +
 assets/ext/jquery-ui/jquery-ui.touch-punch.min.js | 11 +++++++++++
 2 files changed, 12 insertions(+)
 create mode 100644 assets/ext/jquery-ui/jquery-ui.touch-punch.min.js

diff --git a/application/views/backend/header.php b/application/views/backend/header.php
index 789e8c10..1743c283 100755
--- a/application/views/backend/header.php
+++ b/application/views/backend/header.php
@@ -27,6 +27,7 @@
     <script src="<?= asset_url('assets/ext/popper/popper.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/tippy/tippy-bundle.umd.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/jquery-ui/jquery-ui.min.js') ?>"></script>
+    <script src="<?= asset_url('assets/ext/jquery-ui/jquery-ui.touch-punch.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/moment/moment.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/moment/moment-timezone-with-data.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/datejs/date.min.js') ?>"></script>
diff --git a/assets/ext/jquery-ui/jquery-ui.touch-punch.min.js b/assets/ext/jquery-ui/jquery-ui.touch-punch.min.js
new file mode 100644
index 00000000..31272ce6
--- /dev/null
+++ b/assets/ext/jquery-ui/jquery-ui.touch-punch.min.js
@@ -0,0 +1,11 @@
+/*!
+ * jQuery UI Touch Punch 0.2.3
+ *
+ * Copyright 2011–2014, Dave Furfero
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ *
+ * Depends:
+ *  jquery.ui.widget.js
+ *  jquery.ui.mouse.js
+ */
+!function(a){function f(a,b){if(!(a.originalEvent.touches.length>1)){a.preventDefault();var c=a.originalEvent.changedTouches[0],d=document.createEvent("MouseEvents");d.initMouseEvent(b,!0,!0,window,1,c.screenX,c.screenY,c.clientX,c.clientY,!1,!1,!1,!1,0,null),a.target.dispatchEvent(d)}}if(a.support.touch="ontouchend"in document,a.support.touch){var e,b=a.ui.mouse.prototype,c=b._mouseInit,d=b._mouseDestroy;b._touchStart=function(a){var b=this;!e&&b._mouseCapture(a.originalEvent.changedTouches[0])&&(e=!0,b._touchMoved=!1,f(a,"mouseover"),f(a,"mousemove"),f(a,"mousedown"))},b._touchMove=function(a){e&&(this._touchMoved=!0,f(a,"mousemove"))},b._touchEnd=function(a){e&&(f(a,"mouseup"),f(a,"mouseout"),this._touchMoved||f(a,"click"),e=!1)},b._mouseInit=function(){var b=this;b.element.bind({touchstart:a.proxy(b,"_touchStart"),touchmove:a.proxy(b,"_touchMove"),touchend:a.proxy(b,"_touchEnd")}),c.call(b)},b._mouseDestroy=function(){var b=this;b.element.unbind({touchstart:a.proxy(b,"_touchStart"),touchmove:a.proxy(b,"_touchMove"),touchend:a.proxy(b,"_touchEnd")}),d.call(b)}}}(jQuery);
\ No newline at end of file

From 5dd8540577cf72eae5592e2286bb51f2b747ef0f Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 17:44:31 +0300
Subject: [PATCH 24/72] Use the AM/PM postfix as lowercase everywhere for
 consistency.

---
 assets/js/working_plan.js      | 32 ++++++++++++++++----------------
 engine/Notifications/Email.php |  4 ++--
 2 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/assets/js/working_plan.js b/assets/js/working_plan.js
index 99bd9309..4c7db0a3 100755
--- a/assets/js/working_plan.js
+++ b/assets/js/working_plan.js
@@ -85,7 +85,7 @@
                         'html': [
                             $('<input/>', {
                                 'id': index + '-start',
-                                'class': 'work-start form-control input-sm'
+                                'class': 'work-start form-control form-control-sm'
                             })
                         ]
                     }),
@@ -93,7 +93,7 @@
                         'html': [
                             $('<input/>', {
                                 'id': index + '-end',
-                                'class': 'work-start form-control input-sm'
+                                'class': 'work-start form-control form-control-sm'
                             })
                         ]
                     })
@@ -103,8 +103,8 @@
 
             if (workingDay) {
                 $('#' + index).prop('checked', true);
-                $('#' + index + '-start').val(Date.parse(workingDay.start).toString(timeFormat).toUpperCase());
-                $('#' + index + '-end').val(Date.parse(workingDay.end).toString(timeFormat).toUpperCase());
+                $('#' + index + '-start').val(Date.parse(workingDay.start).toString(timeFormat).toLowerCase());
+                $('#' + index + '-end').val(Date.parse(workingDay.end).toString(timeFormat).toLowerCase());
 
                 // Sort day's breaks according to the starting hour
                 workingDay.breaks.sort(function (break1, break2) {
@@ -121,11 +121,11 @@
                             }),
                             $('<td/>', {
                                 'class': 'break-start editable',
-                                'text': Date.parse(workingDayBreak.start).toString(timeFormat).toUpperCase()
+                                'text': Date.parse(workingDayBreak.start).toString(timeFormat).toLowerCase()
                             }),
                             $('<td/>', {
                                 'class': 'break-end editable',
-                                'text': Date.parse(workingDayBreak.end).toString(timeFormat).toUpperCase()
+                                'text': Date.parse(workingDayBreak.end).toString(timeFormat).toLowerCase()
                             }),
                             $('<td/>', {
                                 'html': [
@@ -307,11 +307,11 @@
                 }),
                 $('<td/>', {
                     'class': 'working-plan-exception--start',
-                    'text': Date.parse(workingPlanException.start).toString(timeFormat)
+                    'text': Date.parse(workingPlanException.start).toString(timeFormat).toLowerCase()
                 }),
                 $('<td/>', {
                     'class': 'working-plan-exception--end',
-                    'text': Date.parse(workingPlanException.end).toString(timeFormat)
+                    'text': Date.parse(workingPlanException.end).toString(timeFormat).toLowerCase()
                 }),
                 $('<td/>', {
                     'html': [
@@ -379,11 +379,11 @@
                     }),
                     $('<td/>', {
                         'class': 'break-start editable',
-                        'text': Date.parse('12:00:00').toString(timeFormat)
+                        'text': Date.parse('12:00:00').toString(timeFormat).toLowerCase()
                     }),
                     $('<td/>', {
                         'class': 'break-end editable',
-                        'text': Date.parse('14:00:00').toString(timeFormat)
+                        'text': Date.parse('14:00:00').toString(timeFormat).toLowerCase()
                     }),
                     $('<td/>', {
                         'html': [
@@ -457,7 +457,7 @@
             // Make all cells in current row editable.
             $(this).parent().parent().children().trigger('edit');
             $(this).parent().parent().find('.break-start input, .break-end input').timepicker({
-                timeFormat: GlobalVariables.timeFormat === 'regular' ? 'h:mm TT' : 'HH:mm',
+                timeFormat: GlobalVariables.timeFormat === 'regular' ? 'h:mm tt' : 'HH:mm',
                 currentText: EALang.now,
                 closeText: EALang.close,
                 timeOnlyTitle: EALang.select_time,
@@ -471,7 +471,7 @@
             var $tr = $(this).closest('tr');
             $tr.find('.edit-break, .delete-break').addClass('d-none');
             $tr.find('.save-break, .cancel-break').removeClass('d-none');
-            $tr.find('select,input:text').addClass('form-control input-sm')
+            $tr.find('select,input:text').addClass('form-control form-control-sm')
         });
 
         /**
@@ -497,7 +497,7 @@
             $modifiedRow.find('.cancel-editable').trigger('click');
             this.enableCancel = false;
 
-            $(element).closest('table').find('.edit-break, .delete-break').removeClass('d-none');
+            $modifiedRow.find('.edit-break, .delete-break').removeClass('d-none');
             $modifiedRow.find('.save-break, .cancel-break').addClass('d-none');
         }.bind(this));
 
@@ -516,7 +516,7 @@
             var end = Date.parse($modifiedRow.find('.break-end input').val());
 
             if (start > end) {
-                $modifiedRow.find('.break-end input').val(start.addHours(1).toString(GlobalVariables.timeFormat === 'regular' ? 'h:mm tt' : 'HH:mm'));
+                $modifiedRow.find('.break-end input').val(start.addHours(1).toString(GlobalVariables.timeFormat === 'regular' ? 'h:mm tt' : 'HH:mm').toLowerCase());
             }
 
             this.enableSubmit = true;
@@ -658,7 +658,7 @@
         if (disabled === false) {
             // Set timepickers where needed.
             $('.working-plan input:text').timepicker({
-                timeFormat: GlobalVariables.timeFormat === 'regular' ? 'h:mm TT' : 'HH:mm',
+                timeFormat: GlobalVariables.timeFormat === 'regular' ? 'h:mm tt' : 'HH:mm',
                 currentText: EALang.now,
                 closeText: EALang.close,
                 timeOnlyTitle: EALang.select_time,
@@ -672,7 +672,7 @@
                         end = Date.parse($(this).parent().parent().find('.work-end').val());
 
                     if (start > end) {
-                        $(this).parent().parent().find('.work-end').val(start.addHours(1).toString(GlobalVariables.timeFormat === 'regular' ? 'h:mm tt' : 'HH:mm'));
+                        $(this).parent().parent().find('.work-end').val(start.addHours(1).toString(GlobalVariables.timeFormat === 'regular' ? 'h:mm tt' : 'HH:mm').toLowerCase());
                     }
                 }
             });
diff --git a/engine/Notifications/Email.php b/engine/Notifications/Email.php
index 9e607d38..24617230 100755
--- a/engine/Notifications/Email.php
+++ b/engine/Notifications/Email.php
@@ -119,7 +119,7 @@ class Email {
                 $time_format = 'H:i';
                 break;
             case 'regular':
-                $time_format = 'g:i A';
+                $time_format = 'g:i a';
                 break;
             default:
                 throw new Exception('Invalid time_format value: ' . $settings['time_format']);
@@ -223,7 +223,7 @@ class Email {
                 $time_format = 'H:i';
                 break;
             case 'regular':
-                $time_format = 'g:i A';
+                $time_format = 'g:i a';
                 break;
             default:
                 throw new Exception('Invalid time_format value: ' . $settings['time_format']);

From 9800554b353d898efce00bc918e44afa825cad5e Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 17:52:40 +0300
Subject: [PATCH 25/72] Working plan css improvements

---
 assets/css/backend.css | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/assets/css/backend.css b/assets/css/backend.css
index 03de3a70..7012be4b 100644
--- a/assets/css/backend.css
+++ b/assets/css/backend.css
@@ -709,7 +709,7 @@ body .form-horizontal .controls {
 
 #users-page #providers .working-plan-view .work-start,
 #users-page #providers .working-plan-view .work-end {
-    max-width: 88px;
+    max-width: 100px;
 }
 
 #users-page .btn-toolbar {
@@ -721,6 +721,11 @@ body .form-horizontal .controls {
     clear: both;
 }
 
+#users-page #providers .breaks.table,
+#settings-page .breaks.table {
+    table-layout: fixed;
+}
+
 #users-page #providers .breaks .btn {
     margin-right: 5px;
     padding: 4px 7px;
@@ -785,12 +790,12 @@ body .form-horizontal .controls {
 }
 
 #business-logic .working-plan td input[type="text"] {
-    max-width: 88px;
+    max-width: 100px;
 }
 
 #business-logic .working-plan .work-start,
 #business-logic .working-plan .work-end {
-    max-width: 88px;
+    max-width: 100px;
 }
 
 #business-logic .working-plan label.checkbox {

From 11479f2af40db36c4a37abd367703aa52a8fa9c5 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 18:11:08 +0300
Subject: [PATCH 26/72] Updated CHANGELOG.md

---
 CHANGELOG.md | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index aa6e019e..7b81fbf7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,36 @@
 This file contains the code changes that were introduced into each release (starting from v1.1.0) so that is easy for 
 developers to maintain and readjust their custom modifications on the main project codebase.
 
+## [1.4.2] - TBA
+
+### Added 
+
+- #1004: Add support for line breaks when displaying the service description in the frontend.
+- #1040: Support all-day events while syncing with Google Calendar.
+
+### Fixed
+
+- #1000: Small fix for the display of the delete button in table view.
+- #1011: Working plan exception - details pane shows incorrect details.
+- #1023: Backend calendar table events missing or duplicated.
+- #1026: The timepicker sliders do not work when using an iOS device.
+- #1029: Enhance SMTP functions of PHPMailer.
+- #1043: Unavailable events do not block time from services with multiple attendants.
+- #1046: Make sure that saving the modifications of a single break does not cancel any pending break edits.
+- #1068: Set minimum service duration field value to honor the value of EVENT_MINIMUM_DURATION.
+- #1073: Update PHPMailer dependencies.
+- #1074: In case of deletion of one appointment, system sends email to admins anyway even if they have email notifications disabled.
+- #1092: Javascript RangeError on appointment change causing disabled calendar dates.
+- #961: Timezone/UX issue: Wrong day is selected when timezone differs by -1 day.
+- #966: Secretaries are getting notification emails for providers that are not assigned to them.
+- #980: Missing Pacific (and potentially other) timezones.
+- #982: The Any-Provider option might lead to double bookings, if all the providers have the same number of appointments for the selected date.
+- #986: Managed to replicate appointment hash collisions. 
+- #989: Fix Critical mistake resulting in wrong date
+- #990: The API availabilities controller throws an error when generating availability for services with multiple attendants.
+- #991: Available hours generated with the "Any Provider" option in the booking page, may use the information of a provider that is not assigned to the selected service.
+- #993: Add support for PHP8 (vendor packages need to be updated).
+
 ## [1.4.1] - 2020-12-14
 
 ### Added 

From 215c4f501eb9d56b8bf596ebdf5a7ae420c0141a Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 18:25:36 +0300
Subject: [PATCH 27/72] Release v1.4.2-beta.1

---
 application/config/config.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/application/config/config.php b/application/config/config.php
index 9ac8fb53..db6d0646 100644
--- a/application/config/config.php
+++ b/application/config/config.php
@@ -8,8 +8,8 @@
 | Declare some of the global config values of Easy!Appointments.
 |
 */
-$config['version'] = '1.4.1'; // This must be changed manually.
-$config['release_label'] = ''; // Leave empty for no title or add Alpha, Beta etc ...
+$config['version'] = '1.4.2'; // This must be changed manually.
+$config['release_label'] = 'beta.1'; // Leave empty for no title or add Alpha, Beta etc ...
 $config['debug'] = Config::DEBUG_MODE;
 
 /*
@@ -314,7 +314,7 @@ $config['cache_path'] = __DIR__ . '/../../storage/cache/';
 | new release.
 |
 */
-$config['cache_busting_token'] = '924WX';
+$config['cache_busting_token'] = '624TB';
 
 /*
 |--------------------------------------------------------------------------

From 595506b90f28499ecc15a5b3b00881b42f19b66c Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 19 Jul 2021 18:29:43 +0300
Subject: [PATCH 28/72] Updated CHANGELOG.md

---
 CHANGELOG.md | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7b81fbf7..2f563b49 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,15 @@ developers to maintain and readjust their custom modifications on the main proje
 
 ### Fixed
 
+- #961: Timezone/UX issue: Wrong day is selected when timezone differs by -1 day.
+- #966: Secretaries are getting notification emails for providers that are not assigned to them.
+- #980: Missing Pacific (and potentially other) timezones.
+- #982: The Any-Provider option might lead to double bookings, if all the providers have the same number of appointments for the selected date.
+- #986: Managed to replicate appointment hash collisions. 
+- #989: Fix Critical mistake resulting in wrong date
+- #990: The API availabilities controller throws an error when generating availability for services with multiple attendants.
+- #991: Available hours generated with the "Any Provider" option in the booking page, may use the information of a provider that is not assigned to the selected service.
+- #993: Add support for PHP8 (vendor packages need to be updated).
 - #1000: Small fix for the display of the delete button in table view.
 - #1011: Working plan exception - details pane shows incorrect details.
 - #1023: Backend calendar table events missing or duplicated.
@@ -23,15 +32,6 @@ developers to maintain and readjust their custom modifications on the main proje
 - #1073: Update PHPMailer dependencies.
 - #1074: In case of deletion of one appointment, system sends email to admins anyway even if they have email notifications disabled.
 - #1092: Javascript RangeError on appointment change causing disabled calendar dates.
-- #961: Timezone/UX issue: Wrong day is selected when timezone differs by -1 day.
-- #966: Secretaries are getting notification emails for providers that are not assigned to them.
-- #980: Missing Pacific (and potentially other) timezones.
-- #982: The Any-Provider option might lead to double bookings, if all the providers have the same number of appointments for the selected date.
-- #986: Managed to replicate appointment hash collisions. 
-- #989: Fix Critical mistake resulting in wrong date
-- #990: The API availabilities controller throws an error when generating availability for services with multiple attendants.
-- #991: Available hours generated with the "Any Provider" option in the booking page, may use the information of a provider that is not assigned to the selected service.
-- #993: Add support for PHP8 (vendor packages need to be updated).
 
 ## [1.4.1] - 2020-12-14
 

From b28ccfe0c9067ac7b87e7a6ba496d8d993f46fdd Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Tue, 27 Jul 2021 11:27:16 +0300
Subject: [PATCH 29/72] Updated CHANGELOG.md

---
 CHANGELOG.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2f563b49..1ec4719a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 This file contains the code changes that were introduced into each release (starting from v1.1.0) so that is easy for 
 developers to maintain and readjust their custom modifications on the main project codebase.
 
-## [1.4.2] - TBA
+## [1.4.2] - 2021-07-27
 
 ### Added 
 

From 7393c3646281b0598a00156d0096d979f168e57e Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Tue, 27 Jul 2021 11:31:43 +0300
Subject: [PATCH 30/72] Release v1.4.2

---
 application/config/config.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/application/config/config.php b/application/config/config.php
index db6d0646..c217dcfd 100644
--- a/application/config/config.php
+++ b/application/config/config.php
@@ -9,7 +9,7 @@
 |
 */
 $config['version'] = '1.4.2'; // This must be changed manually.
-$config['release_label'] = 'beta.1'; // Leave empty for no title or add Alpha, Beta etc ...
+$config['release_label'] = ''; // Leave empty for no title or add Alpha, Beta etc ...
 $config['debug'] = Config::DEBUG_MODE;
 
 /*
@@ -314,7 +314,7 @@ $config['cache_path'] = __DIR__ . '/../../storage/cache/';
 | new release.
 |
 */
-$config['cache_busting_token'] = '624TB';
+$config['cache_busting_token'] = 'ZV947';
 
 /*
 |--------------------------------------------------------------------------

From 40b5e42fae026d3bd816f155bea22eccae8f39f2 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Tue, 24 Aug 2021 16:00:59 +0300
Subject: [PATCH 31/72] Applied the right software version to the doc files.

---
 docs/console.md              | 2 +-
 docs/docker.md               | 2 +-
 docs/faq.md                  | 2 +-
 docs/get-involved.md         | 2 +-
 docs/google-calendar-sync.md | 2 +-
 docs/installation-guide.md   | 2 +-
 docs/manage-translations.md  | 2 +-
 docs/readme.md               | 2 +-
 docs/rest-api.md             | 2 +-
 docs/update-guide.md         | 2 +-
 10 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/docs/console.md b/docs/console.md
index e5ed6709..8dd7ec28 100644
--- a/docs/console.md
+++ b/docs/console.md
@@ -89,6 +89,6 @@ php index.php help
 
 This command will give more information about the console capabilities.
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/docker.md b/docs/docker.md
index 57ce0813..deee5f4f 100644
--- a/docs/docker.md
+++ b/docs/docker.md
@@ -45,6 +45,6 @@ You can remove the docker containers with `docker rm easyappointments-server eas
 
 You can remove the server image with `docker rmi easyappointments-server:v1`.
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/faq.md b/docs/faq.md
index 32abfc0e..5f36559c 100644
--- a/docs/faq.md
+++ b/docs/faq.md
@@ -54,6 +54,6 @@ You get this warning because PHP is not configured with a timezone setting. This
  `date_default_timezone_set('America/Los_Angeles'); // Use your own timezone string.`
 
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/get-involved.md b/docs/get-involved.md
index b65fcd46..faa956ce 100644
--- a/docs/get-involved.md
+++ b/docs/get-involved.md
@@ -20,6 +20,6 @@ You are more than welcome to help with the translation progress of the user inte
 
 It would be much appreciated if you would take 5 minutes of your time to fill this small form on your experience with Easy!Appointments. User feedback is very important and will help with the future planning of the project. Fill the [E!A Feedback Form](https://docs.google.com/forms/d/15dw1jl7lUgw4q-XXMn13Gx_e8zJxAiyWYMOdqtZqIHU/viewform).
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/google-calendar-sync.md b/docs/google-calendar-sync.md
index a7595d62..5d88ffef 100644
--- a/docs/google-calendar-sync.md
+++ b/docs/google-calendar-sync.md
@@ -49,6 +49,6 @@ Google Developers – https://developers.google.com/google-apps/calendar
 
 E!A Support Group – https://groups.google.com/forum/#!forum/easy-appointments
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/installation-guide.md b/docs/installation-guide.md
index 83cafc2b..8f21eddf 100644
--- a/docs/installation-guide.md
+++ b/docs/installation-guide.md
@@ -29,6 +29,6 @@ Finally just add a link in your website that points to your Easy!Appointments in
 
 Happy Bookin'!
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/manage-translations.md b/docs/manage-translations.md
index f726a4f3..7256ea48 100644
--- a/docs/manage-translations.md
+++ b/docs/manage-translations.md
@@ -14,6 +14,6 @@ Easy!Appointments is based upon CodeIgniter (PHP Framework) and it uses its buil
 
 Follow these steps in order to add or adjust your translations and modify the message of the user interface of Easy!Appointments. If you want contribute to the translation process of Easy!Appointments please read the [Get Involved](https://github.com/alextselegidis/easyappointments/wiki/Get-Involved!) wiki page for more information. Please share your translations with the user community. 
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/readme.md b/docs/readme.md
index 7d172e58..89500aa3 100644
--- a/docs/readme.md
+++ b/docs/readme.md
@@ -11,4 +11,4 @@ Welcome to the documentation pages of Easy!Appointments. Navigate through the av
 - [Google Calendar Sync](google-calendar-sync.md)
 - [FAQ](faq.md)
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
diff --git a/docs/rest-api.md b/docs/rest-api.md
index 587501cf..476d2f9e 100644
--- a/docs/rest-api.md
+++ b/docs/rest-api.md
@@ -472,6 +472,6 @@ fastcgi_param PHP_AUTH_PW $http_authorization;
 
 [[Source]](http://serverfault.com/a/520943)
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/update-guide.md b/docs/update-guide.md
index db6caba9..0229c7d3 100644
--- a/docs/update-guide.md
+++ b/docs/update-guide.md
@@ -110,6 +110,6 @@ Open your browser to the Easy!Appointments installation URL, login to the backen
 
 Use the data of the old `configuration.php` file in the new `config.php`. 
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)

From 591de3d35f39f8b03275ff20e2660f33e5406519 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Tue, 24 Aug 2021 16:01:17 +0300
Subject: [PATCH 32/72] Corrected model comments

---
 application/models/Secretaries_model.php | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/application/models/Secretaries_model.php b/application/models/Secretaries_model.php
index 0a8bd153..6b81805a 100644
--- a/application/models/Secretaries_model.php
+++ b/application/models/Secretaries_model.php
@@ -162,7 +162,7 @@ class Secretaries_model extends EA_Model {
     /**
      * Validate Records Username
      *
-     * @param string $username The provider records username.
+     * @param string $username The secretary records username.
      * @param int $user_id The user record id.
      *
      * @return bool Returns the validation result.
@@ -348,13 +348,13 @@ class Secretaries_model extends EA_Model {
     }
 
     /**
-     * Set a provider's setting value in the database.
+     * Set a secretary's setting value in the database.
      *
-     * The provider and settings record must already exist.
+     * The secretary and settings record must already exist.
      *
      * @param string $setting_name The setting's name.
      * @param string $value The setting's value.
-     * @param int $secretary_id The selected provider id.
+     * @param int $secretary_id The selected secretary id.
      *
      * @return bool
      */
@@ -556,7 +556,7 @@ class Secretaries_model extends EA_Model {
     }
 
     /**
-     * Get a providers setting from the database.
+     * Get a secretaries setting from the database.
      *
      * @param string $setting_name The setting name that is going to be returned.
      * @param int $secretary_id The selected provider id.
@@ -565,8 +565,8 @@ class Secretaries_model extends EA_Model {
      */
     public function get_setting($setting_name, $secretary_id)
     {
-        $provider_settings = $this->db->get_where('user_settings',
+        $secretary_settings = $this->db->get_where('user_settings',
             ['id_users' => $secretary_id])->row_array();
-        return $provider_settings[$setting_name];
+        return $secretary_settings[$setting_name];
     }
 }

From 49197b5c6612e8e3c3551241ff0c292c377fa791 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Tue, 24 Aug 2021 16:01:44 +0300
Subject: [PATCH 33/72] Use the right bootstrap CSS classes for the setting
 input field help blocks

---
 application/views/backend/settings.php | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/application/views/backend/settings.php b/application/views/backend/settings.php
index f3b758ad..6e2669e8 100755
--- a/application/views/backend/settings.php
+++ b/application/views/backend/settings.php
@@ -140,7 +140,7 @@
                                     <option value="friday"><?= lang('friday') ?></option>
                                     <option value="saturday"><?= lang('saturday') ?></option>
                                 </select>
-                                <span class="help-block">
+                                <span class="form-text text-muted">
                                     <?= lang('first_weekday_hint') ?>
                                 </span>
                             </div>
@@ -151,14 +151,14 @@
                                     Google Analytics ID</label>
                                 <input id="google-analytics-code" placeholder="UA-XXXXXXXX-XX or G-XXXXXXXXXX"
                                        data-field="google_analytics_code" class="form-control">
-                                <span class="help-block">
+                                <span class="form-text text-muted">
                                     <?= lang('google_analytics_code_hint') ?>
                                 </span>
                             </div>
                             <div class="form-group">
                                 <label for="api-token">API Token</label>
                                 <input id="api-token" data-field="api_token" class="form-control">
-                                <span class="help-block">
+                                <span class="form-text text-muted">
                                     <?= lang('api_token_hint') ?>
                                 </span>
                             </div>
@@ -192,7 +192,7 @@
                                         <?= lang('phone_number') ?>
                                     </label>
                                 </div>
-                                <span class="help-block">
+                                <span class="form-text text-muted">
                                     <?= lang('require_phone_number_hint') ?>
                                 </span>
                             </div>
@@ -203,7 +203,7 @@
                                         <?= lang('any_provider') ?>
                                     </label>
                                 </div>
-                                <span class="help-block">
+                                <span class="form-text text-muted">
                                     <?= lang('display_any_provider_hint') ?>
                                 </span>
                             </div>

From 8eec2339cf6075957b4148c117d93c816ace915f Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Tue, 24 Aug 2021 16:03:45 +0300
Subject: [PATCH 34/72] The backend calendar must display the modified
 appointment date, when using the appointment link of the confirmation email
 (#1112).

---
 assets/js/backend_calendar_default_view.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/assets/js/backend_calendar_default_view.js b/assets/js/backend_calendar_default_view.js
index 9f9275be..c598a726 100755
--- a/assets/js/backend_calendar_default_view.js
+++ b/assets/js/backend_calendar_default_view.js
@@ -1621,6 +1621,8 @@ window.BackendCalendarDefaultView = window.BackendCalendarDefaultView || {};
             $dialog.find('#customer-notes').val(customer.notes);
 
             $dialog.modal('show');
+
+            $('#calendar').fullCalendar('gotoDate', moment(appointment.start_datetime));
         }
 
         if (!$('#select-filter-item option').length) {

From 3a6f3472466862cd398efcfdd5151a7a2ae2e0d9 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Tue, 24 Aug 2021 16:34:13 +0300
Subject: [PATCH 35/72] Re-introduced the system folder to the root directory
 and removed it from the composer.json file (#1109).

---
 composer.json                                 |    7 -
 composer.lock                                 |   41 +-
 index.php                                     |    2 +-
 system/.htaccess                              |    6 +
 system/core/Benchmark.php                     |  133 +
 system/core/CodeIgniter.php                   |  508 +++
 system/core/Common.php                        |  853 +++++
 system/core/Config.php                        |  365 +++
 system/core/Controller.php                    |  103 +
 system/core/Exceptions.php                    |  286 ++
 system/core/Hooks.php                         |  266 ++
 system/core/Input.php                         |  662 ++++
 system/core/Lang.php                          |  203 ++
 system/core/Loader.php                        | 1405 ++++++++
 system/core/Log.php                           |  295 ++
 system/core/Model.php                         |   68 +
 system/core/Output.php                        |  839 +++++
 system/core/Router.php                        |  472 +++
 system/core/Security.php                      | 1068 ++++++
 system/core/URI.php                           |  661 ++++
 system/core/Utf8.php                          |  164 +
 system/core/compat/hash.php                   |  252 ++
 system/core/compat/index.html                 |   11 +
 system/core/compat/mbstring.php               |  149 +
 system/core/compat/password.php               |  251 ++
 system/core/compat/standard.php               |  134 +
 system/core/index.html                        |   11 +
 system/database/DB.php                        |  221 ++
 system/database/DB_cache.php                  |  221 ++
 system/database/DB_driver.php                 | 1938 +++++++++++
 system/database/DB_forge.php                  | 1045 ++++++
 system/database/DB_query_builder.php          | 2880 +++++++++++++++++
 system/database/DB_result.php                 |  665 ++++
 system/database/DB_utility.php                |  414 +++
 .../database/drivers/cubrid/cubrid_driver.php |  405 +++
 .../database/drivers/cubrid/cubrid_forge.php  |  230 ++
 .../database/drivers/cubrid/cubrid_result.php |  177 +
 .../drivers/cubrid/cubrid_utility.php         |   79 +
 system/database/drivers/cubrid/index.html     |   11 +
 .../database/drivers/ibase/ibase_driver.php   |  413 +++
 system/database/drivers/ibase/ibase_forge.php |  251 ++
 .../database/drivers/ibase/ibase_result.php   |  161 +
 .../database/drivers/ibase/ibase_utility.php  |   69 +
 system/database/drivers/ibase/index.html      |   11 +
 system/database/drivers/index.html            |   11 +
 system/database/drivers/mssql/index.html      |   11 +
 .../database/drivers/mssql/mssql_driver.php   |  506 +++
 system/database/drivers/mssql/mssql_forge.php |  151 +
 .../database/drivers/mssql/mssql_result.php   |  198 ++
 .../database/drivers/mssql/mssql_utility.php  |   77 +
 system/database/drivers/mysql/index.html      |   11 +
 .../database/drivers/mysql/mysql_driver.php   |  493 +++
 system/database/drivers/mysql/mysql_forge.php |  243 ++
 .../database/drivers/mysql/mysql_result.php   |  199 ++
 .../database/drivers/mysql/mysql_utility.php  |  211 ++
 system/database/drivers/mysqli/index.html     |   11 +
 .../database/drivers/mysqli/mysqli_driver.php |  540 ++++
 .../database/drivers/mysqli/mysqli_forge.php  |  244 ++
 .../database/drivers/mysqli/mysqli_result.php |  232 ++
 .../drivers/mysqli/mysqli_utility.php         |  211 ++
 system/database/drivers/oci8/index.html       |   11 +
 system/database/drivers/oci8/oci8_driver.php  |  701 ++++
 system/database/drivers/oci8/oci8_forge.php   |  216 ++
 system/database/drivers/oci8/oci8_result.php  |  229 ++
 system/database/drivers/oci8/oci8_utility.php |   68 +
 system/database/drivers/odbc/index.html       |   11 +
 system/database/drivers/odbc/odbc_driver.php  |  425 +++
 system/database/drivers/odbc/odbc_forge.php   |   86 +
 system/database/drivers/odbc/odbc_result.php  |  268 ++
 system/database/drivers/odbc/odbc_utility.php |   63 +
 system/database/drivers/pdo/index.html        |   11 +
 system/database/drivers/pdo/pdo_driver.php    |  342 ++
 system/database/drivers/pdo/pdo_forge.php     |   65 +
 system/database/drivers/pdo/pdo_result.php    |  198 ++
 system/database/drivers/pdo/pdo_utility.php   |   63 +
 .../drivers/pdo/subdrivers/index.html         |   11 +
 .../drivers/pdo/subdrivers/pdo_4d_driver.php  |  200 ++
 .../drivers/pdo/subdrivers/pdo_4d_forge.php   |  217 ++
 .../pdo/subdrivers/pdo_cubrid_driver.php      |  209 ++
 .../pdo/subdrivers/pdo_cubrid_forge.php       |  230 ++
 .../pdo/subdrivers/pdo_dblib_driver.php       |  353 ++
 .../pdo/subdrivers/pdo_dblib_forge.php        |  149 +
 .../pdo/subdrivers/pdo_firebird_driver.php    |  279 ++
 .../pdo/subdrivers/pdo_firebird_forge.php     |  237 ++
 .../drivers/pdo/subdrivers/pdo_ibm_driver.php |  244 ++
 .../drivers/pdo/subdrivers/pdo_ibm_forge.php  |  154 +
 .../pdo/subdrivers/pdo_informix_driver.php    |  309 ++
 .../pdo/subdrivers/pdo_informix_forge.php     |  163 +
 .../pdo/subdrivers/pdo_mysql_driver.php       |  379 +++
 .../pdo/subdrivers/pdo_mysql_forge.php        |  256 ++
 .../drivers/pdo/subdrivers/pdo_oci_driver.php |  326 ++
 .../drivers/pdo/subdrivers/pdo_oci_forge.php  |  207 ++
 .../pdo/subdrivers/pdo_odbc_driver.php        |  229 ++
 .../drivers/pdo/subdrivers/pdo_odbc_forge.php |   70 +
 .../pdo/subdrivers/pdo_pgsql_driver.php       |  384 +++
 .../pdo/subdrivers/pdo_pgsql_forge.php        |  210 ++
 .../pdo/subdrivers/pdo_sqlite_driver.php      |  213 ++
 .../pdo/subdrivers/pdo_sqlite_forge.php       |  238 ++
 .../pdo/subdrivers/pdo_sqlsrv_driver.php      |  369 +++
 .../pdo/subdrivers/pdo_sqlsrv_forge.php       |  149 +
 system/database/drivers/postgre/index.html    |   11 +
 .../drivers/postgre/postgre_driver.php        |  604 ++++
 .../drivers/postgre/postgre_forge.php         |  205 ++
 .../drivers/postgre/postgre_result.php        |  182 ++
 .../drivers/postgre/postgre_utility.php       |   78 +
 system/database/drivers/sqlite3/index.html    |   11 +
 .../drivers/sqlite3/sqlite3_driver.php        |  344 ++
 .../drivers/sqlite3/sqlite3_forge.php         |  225 ++
 .../drivers/sqlite3/sqlite3_result.php        |  194 ++
 .../drivers/sqlite3/sqlite3_utility.php       |   61 +
 system/database/drivers/sqlsrv/index.html     |   11 +
 .../database/drivers/sqlsrv/sqlsrv_driver.php |  543 ++++
 .../database/drivers/sqlsrv/sqlsrv_forge.php  |  149 +
 .../database/drivers/sqlsrv/sqlsrv_result.php |  193 ++
 .../drivers/sqlsrv/sqlsrv_utility.php         |   77 +
 system/database/index.html                    |   11 +
 system/fonts/index.html                       |   11 +
 system/fonts/texb.ttf                         |  Bin 0 -> 143830 bytes
 system/helpers/array_helper.php               |  115 +
 system/helpers/captcha_helper.php             |  384 +++
 system/helpers/cookie_helper.php              |  112 +
 system/helpers/date_helper.php                |  702 ++++
 system/helpers/directory_helper.php           |  101 +
 system/helpers/download_helper.php            |  180 ++
 system/helpers/file_helper.php                |  433 +++
 system/helpers/form_helper.php                | 1035 ++++++
 system/helpers/html_helper.php                |  391 +++
 system/helpers/index.html                     |   11 +
 system/helpers/inflector_helper.php           |  326 ++
 system/helpers/language_helper.php            |   75 +
 system/helpers/number_helper.php              |   94 +
 system/helpers/path_helper.php                |   82 +
 system/helpers/security_helper.php            |  113 +
 system/helpers/string_helper.php              |  257 ++
 system/helpers/text_helper.php                |  567 ++++
 system/helpers/typography_helper.php          |  104 +
 system/helpers/url_helper.php                 |  569 ++++
 system/helpers/xml_helper.php                 |   90 +
 system/index.html                             |   11 +
 system/language/english/calendar_lang.php     |   84 +
 system/language/english/date_lang.php         |   94 +
 system/language/english/db_lang.php           |   63 +
 system/language/english/email_lang.php        |   58 +
 .../language/english/form_validation_lang.php |   70 +
 system/language/english/ftp_lang.php          |   51 +
 system/language/english/imglib_lang.php       |   58 +
 system/language/english/index.html            |   11 +
 system/language/english/migration_lang.php    |   47 +
 system/language/english/number_lang.php       |   44 +
 system/language/english/pagination_lang.php   |   43 +
 system/language/english/profiler_lang.php     |   60 +
 system/language/english/unit_test_lang.php    |   58 +
 system/language/english/upload_lang.php       |   55 +
 system/language/index.html                    |   11 +
 system/libraries/Cache/Cache.php              |  268 ++
 system/libraries/Cache/drivers/Cache_apc.php  |  217 ++
 system/libraries/Cache/drivers/Cache_apcu.php |  219 ++
 .../libraries/Cache/drivers/Cache_dummy.php   |  172 +
 system/libraries/Cache/drivers/Cache_file.php |  286 ++
 .../Cache/drivers/Cache_memcached.php         |  325 ++
 .../libraries/Cache/drivers/Cache_redis.php   |  364 +++
 .../Cache/drivers/Cache_wincache.php          |  217 ++
 system/libraries/Cache/drivers/index.html     |   11 +
 system/libraries/Cache/index.html             |   11 +
 system/libraries/Calendar.php                 |  546 ++++
 system/libraries/Driver.php                   |  342 ++
 system/libraries/Email.php                    | 2417 ++++++++++++++
 system/libraries/Encrypt.php                  |  521 +++
 system/libraries/Encryption.php               |  938 ++++++
 system/libraries/Form_validation.php          | 1592 +++++++++
 system/libraries/Ftp.php                      |  667 ++++
 system/libraries/Image_lib.php                | 1878 +++++++++++
 system/libraries/Migration.php                |  477 +++
 system/libraries/Pagination.php               |  704 ++++
 system/libraries/Parser.php                   |  248 ++
 system/libraries/Profiler.php                 |  574 ++++
 system/libraries/Session/Session.php          |  962 ++++++
 system/libraries/Session/Session_driver.php   |  187 ++
 .../drivers/Session_database_driver.php       |  445 +++
 .../Session/drivers/Session_files_driver.php  |  432 +++
 .../drivers/Session_memcached_driver.php      |  397 +++
 .../Session/drivers/Session_redis_driver.php  |  485 +++
 system/libraries/Session/drivers/index.html   |   11 +
 system/libraries/Session/index.html           |   11 +
 system/libraries/Table.php                    |  539 +++
 system/libraries/Trackback.php                |  556 ++++
 system/libraries/Typography.php               |  424 +++
 system/libraries/Unit_test.php                |  406 +++
 system/libraries/Upload.php                   | 1324 ++++++++
 system/libraries/User_agent.php               |  681 ++++
 system/libraries/Xmlrpc.php                   | 1918 +++++++++++
 system/libraries/Xmlrpcs.php                  |  619 ++++
 system/libraries/Zip.php                      |  530 +++
 system/libraries/index.html                   |   11 +
 194 files changed, 62650 insertions(+), 48 deletions(-)
 create mode 100644 system/.htaccess
 create mode 100644 system/core/Benchmark.php
 create mode 100644 system/core/CodeIgniter.php
 create mode 100644 system/core/Common.php
 create mode 100644 system/core/Config.php
 create mode 100644 system/core/Controller.php
 create mode 100644 system/core/Exceptions.php
 create mode 100644 system/core/Hooks.php
 create mode 100644 system/core/Input.php
 create mode 100644 system/core/Lang.php
 create mode 100644 system/core/Loader.php
 create mode 100644 system/core/Log.php
 create mode 100644 system/core/Model.php
 create mode 100644 system/core/Output.php
 create mode 100644 system/core/Router.php
 create mode 100644 system/core/Security.php
 create mode 100644 system/core/URI.php
 create mode 100644 system/core/Utf8.php
 create mode 100644 system/core/compat/hash.php
 create mode 100644 system/core/compat/index.html
 create mode 100644 system/core/compat/mbstring.php
 create mode 100644 system/core/compat/password.php
 create mode 100644 system/core/compat/standard.php
 create mode 100644 system/core/index.html
 create mode 100644 system/database/DB.php
 create mode 100644 system/database/DB_cache.php
 create mode 100644 system/database/DB_driver.php
 create mode 100644 system/database/DB_forge.php
 create mode 100644 system/database/DB_query_builder.php
 create mode 100644 system/database/DB_result.php
 create mode 100644 system/database/DB_utility.php
 create mode 100644 system/database/drivers/cubrid/cubrid_driver.php
 create mode 100644 system/database/drivers/cubrid/cubrid_forge.php
 create mode 100644 system/database/drivers/cubrid/cubrid_result.php
 create mode 100644 system/database/drivers/cubrid/cubrid_utility.php
 create mode 100644 system/database/drivers/cubrid/index.html
 create mode 100644 system/database/drivers/ibase/ibase_driver.php
 create mode 100644 system/database/drivers/ibase/ibase_forge.php
 create mode 100644 system/database/drivers/ibase/ibase_result.php
 create mode 100644 system/database/drivers/ibase/ibase_utility.php
 create mode 100644 system/database/drivers/ibase/index.html
 create mode 100644 system/database/drivers/index.html
 create mode 100644 system/database/drivers/mssql/index.html
 create mode 100644 system/database/drivers/mssql/mssql_driver.php
 create mode 100644 system/database/drivers/mssql/mssql_forge.php
 create mode 100644 system/database/drivers/mssql/mssql_result.php
 create mode 100644 system/database/drivers/mssql/mssql_utility.php
 create mode 100644 system/database/drivers/mysql/index.html
 create mode 100644 system/database/drivers/mysql/mysql_driver.php
 create mode 100644 system/database/drivers/mysql/mysql_forge.php
 create mode 100644 system/database/drivers/mysql/mysql_result.php
 create mode 100644 system/database/drivers/mysql/mysql_utility.php
 create mode 100644 system/database/drivers/mysqli/index.html
 create mode 100644 system/database/drivers/mysqli/mysqli_driver.php
 create mode 100644 system/database/drivers/mysqli/mysqli_forge.php
 create mode 100644 system/database/drivers/mysqli/mysqli_result.php
 create mode 100644 system/database/drivers/mysqli/mysqli_utility.php
 create mode 100644 system/database/drivers/oci8/index.html
 create mode 100644 system/database/drivers/oci8/oci8_driver.php
 create mode 100644 system/database/drivers/oci8/oci8_forge.php
 create mode 100644 system/database/drivers/oci8/oci8_result.php
 create mode 100644 system/database/drivers/oci8/oci8_utility.php
 create mode 100644 system/database/drivers/odbc/index.html
 create mode 100644 system/database/drivers/odbc/odbc_driver.php
 create mode 100644 system/database/drivers/odbc/odbc_forge.php
 create mode 100644 system/database/drivers/odbc/odbc_result.php
 create mode 100644 system/database/drivers/odbc/odbc_utility.php
 create mode 100644 system/database/drivers/pdo/index.html
 create mode 100644 system/database/drivers/pdo/pdo_driver.php
 create mode 100644 system/database/drivers/pdo/pdo_forge.php
 create mode 100644 system/database/drivers/pdo/pdo_result.php
 create mode 100644 system/database/drivers/pdo/pdo_utility.php
 create mode 100644 system/database/drivers/pdo/subdrivers/index.html
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_4d_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_4d_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_cubrid_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_cubrid_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_dblib_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_firebird_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_ibm_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_ibm_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_informix_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_informix_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_mysql_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_oci_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_oci_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_odbc_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_sqlite_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_sqlite_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_sqlsrv_forge.php
 create mode 100644 system/database/drivers/postgre/index.html
 create mode 100644 system/database/drivers/postgre/postgre_driver.php
 create mode 100644 system/database/drivers/postgre/postgre_forge.php
 create mode 100644 system/database/drivers/postgre/postgre_result.php
 create mode 100644 system/database/drivers/postgre/postgre_utility.php
 create mode 100644 system/database/drivers/sqlite3/index.html
 create mode 100644 system/database/drivers/sqlite3/sqlite3_driver.php
 create mode 100644 system/database/drivers/sqlite3/sqlite3_forge.php
 create mode 100644 system/database/drivers/sqlite3/sqlite3_result.php
 create mode 100644 system/database/drivers/sqlite3/sqlite3_utility.php
 create mode 100644 system/database/drivers/sqlsrv/index.html
 create mode 100644 system/database/drivers/sqlsrv/sqlsrv_driver.php
 create mode 100644 system/database/drivers/sqlsrv/sqlsrv_forge.php
 create mode 100644 system/database/drivers/sqlsrv/sqlsrv_result.php
 create mode 100644 system/database/drivers/sqlsrv/sqlsrv_utility.php
 create mode 100644 system/database/index.html
 create mode 100644 system/fonts/index.html
 create mode 100644 system/fonts/texb.ttf
 create mode 100644 system/helpers/array_helper.php
 create mode 100644 system/helpers/captcha_helper.php
 create mode 100644 system/helpers/cookie_helper.php
 create mode 100644 system/helpers/date_helper.php
 create mode 100644 system/helpers/directory_helper.php
 create mode 100644 system/helpers/download_helper.php
 create mode 100644 system/helpers/file_helper.php
 create mode 100644 system/helpers/form_helper.php
 create mode 100644 system/helpers/html_helper.php
 create mode 100644 system/helpers/index.html
 create mode 100644 system/helpers/inflector_helper.php
 create mode 100644 system/helpers/language_helper.php
 create mode 100644 system/helpers/number_helper.php
 create mode 100644 system/helpers/path_helper.php
 create mode 100644 system/helpers/security_helper.php
 create mode 100644 system/helpers/string_helper.php
 create mode 100644 system/helpers/text_helper.php
 create mode 100644 system/helpers/typography_helper.php
 create mode 100644 system/helpers/url_helper.php
 create mode 100644 system/helpers/xml_helper.php
 create mode 100644 system/index.html
 create mode 100644 system/language/english/calendar_lang.php
 create mode 100644 system/language/english/date_lang.php
 create mode 100644 system/language/english/db_lang.php
 create mode 100644 system/language/english/email_lang.php
 create mode 100644 system/language/english/form_validation_lang.php
 create mode 100644 system/language/english/ftp_lang.php
 create mode 100644 system/language/english/imglib_lang.php
 create mode 100644 system/language/english/index.html
 create mode 100644 system/language/english/migration_lang.php
 create mode 100644 system/language/english/number_lang.php
 create mode 100644 system/language/english/pagination_lang.php
 create mode 100644 system/language/english/profiler_lang.php
 create mode 100644 system/language/english/unit_test_lang.php
 create mode 100644 system/language/english/upload_lang.php
 create mode 100644 system/language/index.html
 create mode 100644 system/libraries/Cache/Cache.php
 create mode 100644 system/libraries/Cache/drivers/Cache_apc.php
 create mode 100644 system/libraries/Cache/drivers/Cache_apcu.php
 create mode 100644 system/libraries/Cache/drivers/Cache_dummy.php
 create mode 100644 system/libraries/Cache/drivers/Cache_file.php
 create mode 100644 system/libraries/Cache/drivers/Cache_memcached.php
 create mode 100644 system/libraries/Cache/drivers/Cache_redis.php
 create mode 100644 system/libraries/Cache/drivers/Cache_wincache.php
 create mode 100644 system/libraries/Cache/drivers/index.html
 create mode 100644 system/libraries/Cache/index.html
 create mode 100644 system/libraries/Calendar.php
 create mode 100644 system/libraries/Driver.php
 create mode 100644 system/libraries/Email.php
 create mode 100644 system/libraries/Encrypt.php
 create mode 100644 system/libraries/Encryption.php
 create mode 100644 system/libraries/Form_validation.php
 create mode 100644 system/libraries/Ftp.php
 create mode 100644 system/libraries/Image_lib.php
 create mode 100644 system/libraries/Migration.php
 create mode 100644 system/libraries/Pagination.php
 create mode 100644 system/libraries/Parser.php
 create mode 100644 system/libraries/Profiler.php
 create mode 100644 system/libraries/Session/Session.php
 create mode 100644 system/libraries/Session/Session_driver.php
 create mode 100644 system/libraries/Session/drivers/Session_database_driver.php
 create mode 100644 system/libraries/Session/drivers/Session_files_driver.php
 create mode 100644 system/libraries/Session/drivers/Session_memcached_driver.php
 create mode 100644 system/libraries/Session/drivers/Session_redis_driver.php
 create mode 100644 system/libraries/Session/drivers/index.html
 create mode 100644 system/libraries/Session/index.html
 create mode 100644 system/libraries/Table.php
 create mode 100644 system/libraries/Trackback.php
 create mode 100644 system/libraries/Typography.php
 create mode 100644 system/libraries/Unit_test.php
 create mode 100644 system/libraries/Upload.php
 create mode 100644 system/libraries/User_agent.php
 create mode 100644 system/libraries/Xmlrpc.php
 create mode 100644 system/libraries/Xmlrpcs.php
 create mode 100644 system/libraries/Zip.php
 create mode 100644 system/libraries/index.html

diff --git a/composer.json b/composer.json
index cb18245d..9faad569 100644
--- a/composer.json
+++ b/composer.json
@@ -31,12 +31,6 @@
             "EA\\Engine\\": "engine/"
         }
     },
-    "repositories": [
-        {
-            "type": "vcs",
-            "url": "https://github.com/alextselegidis/CodeIgniter.git"
-        }
-    ],
     "require": {
         "php": ">=7.3",
         "ext-curl": "*",
@@ -45,7 +39,6 @@
         "ext-gd": "*",
         "gregwar/captcha": "^1.1",
         "phpmailer/phpmailer": "^6.1",
-        "codeigniter/framework": "dev-3.1.11-php8.0",
         "jsvrcek/ics": "^0.8",
         "monolog/monolog": "^1",
         "google/apiclient": "^2.0"
diff --git a/composer.lock b/composer.lock
index eed2ed87..16b03a30 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,46 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "497c61b934beb02136c67ffa45347eb7",
+    "content-hash": "38fd62b1f2842600782427033aa9e826",
     "packages": [
-        {
-            "name": "codeigniter/framework",
-            "version": "dev-3.1.11-php8.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/alextselegidis/CodeIgniter.git",
-                "reference": "0648ae2acb3fae84f2cc49e15edb345ccef6cad5"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/alextselegidis/CodeIgniter/zipball/0648ae2acb3fae84f2cc49e15edb345ccef6cad5",
-                "reference": "0648ae2acb3fae84f2cc49e15edb345ccef6cad5",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.4.8"
-            },
-            "require-dev": {
-                "mikey179/vfsstream": "1.1.*",
-                "phpunit/phpunit": "4.* || 5.*"
-            },
-            "suggest": {
-                "paragonie/random_compat": "Provides better randomness in PHP 5.x"
-            },
-            "type": "project",
-            "license": [
-                "MIT"
-            ],
-            "description": "The CodeIgniter framework",
-            "homepage": "https://codeigniter.com",
-            "support": {
-                "forum": "https://forum.codeigniter.com/",
-                "wiki": "https://github.com/bcit-ci/CodeIgniter/wiki",
-                "slack": "https://codeigniterchat.slack.com",
-                "source": "https://github.com/bcit-ci/CodeIgniter"
-            },
-            "time": "2021-03-10T20:11:52+00:00"
-        },
         {
             "name": "firebase/php-jwt",
             "version": "v5.4.0",
@@ -3785,7 +3747,6 @@
     "aliases": [],
     "minimum-stability": "stable",
     "stability-flags": {
-        "codeigniter/framework": 20,
         "roave/security-advisories": 20
     },
     "prefer-stable": false,
diff --git a/index.php b/index.php
index b7548e6b..b1a40558 100644
--- a/index.php
+++ b/index.php
@@ -123,7 +123,7 @@ switch (ENVIRONMENT)
  * This variable must contain the name of your "system" directory.
  * Set the path if it is not in the same directory as this file.
  */
-	$system_path = 'vendor/codeigniter/framework/system';
+	$system_path = 'system';
 
 /*
  *---------------------------------------------------------------
diff --git a/system/.htaccess b/system/.htaccess
new file mode 100644
index 00000000..97c65d2d
--- /dev/null
+++ b/system/.htaccess
@@ -0,0 +1,6 @@
+<IfModule authz_core_module>
+	Require all denied
+</IfModule>
+<IfModule !authz_core_module>
+	Deny from all
+</IfModule>
\ No newline at end of file
diff --git a/system/core/Benchmark.php b/system/core/Benchmark.php
new file mode 100644
index 00000000..0b48d4d0
--- /dev/null
+++ b/system/core/Benchmark.php
@@ -0,0 +1,133 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Benchmark Class
+ *
+ * This class enables you to mark points and calculate the time difference
+ * between them. Memory consumption can also be displayed.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/benchmark.html
+ */
+class CI_Benchmark {
+
+	/**
+	 * List of all benchmark markers
+	 *
+	 * @var	array
+	 */
+	public $marker = array();
+
+	/**
+	 * Set a benchmark marker
+	 *
+	 * Multiple calls to this function can be made so that several
+	 * execution points can be timed.
+	 *
+	 * @param	string	$name	Marker name
+	 * @return	void
+	 */
+	public function mark($name)
+	{
+		$this->marker[$name] = microtime(TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Elapsed time
+	 *
+	 * Calculates the time difference between two marked points.
+	 *
+	 * If the first parameter is empty this function instead returns the
+	 * {elapsed_time} pseudo-variable. This permits the full system
+	 * execution time to be shown in a template. The output class will
+	 * swap the real value for this variable.
+	 *
+	 * @param	string	$point1		A particular marked point
+	 * @param	string	$point2		A particular marked point
+	 * @param	int	$decimals	Number of decimal places
+	 *
+	 * @return	string	Calculated elapsed time on success,
+	 *			an '{elapsed_string}' if $point1 is empty
+	 *			or an empty string if $point1 is not found.
+	 */
+	public function elapsed_time($point1 = '', $point2 = '', $decimals = 4)
+	{
+		if ($point1 === '')
+		{
+			return '{elapsed_time}';
+		}
+
+		if ( ! isset($this->marker[$point1]))
+		{
+			return '';
+		}
+
+		if ( ! isset($this->marker[$point2]))
+		{
+			$this->marker[$point2] = microtime(TRUE);
+		}
+
+		return number_format($this->marker[$point2] - $this->marker[$point1], $decimals);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Memory Usage
+	 *
+	 * Simply returns the {memory_usage} marker.
+	 *
+	 * This permits it to be put it anywhere in a template
+	 * without the memory being calculated until the end.
+	 * The output class will swap the real value for this variable.
+	 *
+	 * @return	string	'{memory_usage}'
+	 */
+	public function memory_usage()
+	{
+		return '{memory_usage}';
+	}
+
+}
diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php
new file mode 100644
index 00000000..704539ef
--- /dev/null
+++ b/system/core/CodeIgniter.php
@@ -0,0 +1,508 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * System Initialization File
+ *
+ * Loads the base classes and executes the request.
+ *
+ * @package		CodeIgniter
+ * @subpackage	CodeIgniter
+ * @category	Front-controller
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/
+ */
+
+/**
+ * CodeIgniter Version
+ *
+ * @var	string
+ *
+ */
+	const CI_VERSION = '3.2.0-dev';
+
+/*
+ * ------------------------------------------------------
+ *  Load the framework constants
+ * ------------------------------------------------------
+ */
+	if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/constants.php'))
+	{
+		require_once(APPPATH.'config/'.ENVIRONMENT.'/constants.php');
+	}
+
+	if (file_exists(APPPATH.'config/constants.php'))
+	{
+		require_once(APPPATH.'config/constants.php');
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Load the global functions
+ * ------------------------------------------------------
+ */
+	require_once(BASEPATH.'core/Common.php');
+
+/*
+ * ------------------------------------------------------
+ *  Define a custom error handler so we can log PHP errors
+ * ------------------------------------------------------
+ */
+	set_error_handler('_error_handler');
+	set_exception_handler('_exception_handler');
+	register_shutdown_function('_shutdown_handler');
+
+/*
+ * ------------------------------------------------------
+ *  Set the subclass_prefix
+ * ------------------------------------------------------
+ *
+ * Normally the "subclass_prefix" is set in the config file.
+ * The subclass prefix allows CI to know if a core class is
+ * being extended via a library in the local application
+ * "libraries" folder. Since CI allows config items to be
+ * overridden via data set in the main index.php file,
+ * before proceeding we need to know if a subclass_prefix
+ * override exists. If so, we will set this value now,
+ * before any classes are loaded
+ * Note: Since the config file data is cached it doesn't
+ * hurt to load it here.
+ */
+	if ( ! empty($assign_to_config['subclass_prefix']))
+	{
+		get_config(array('subclass_prefix' => $assign_to_config['subclass_prefix']));
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Should we use a Composer autoloader?
+ * ------------------------------------------------------
+ */
+	if ($composer_autoload = config_item('composer_autoload'))
+	{
+		if ($composer_autoload === TRUE)
+		{
+			file_exists(APPPATH.'vendor/autoload.php')
+				? require_once(APPPATH.'vendor/autoload.php')
+				: log_message('error', '$config[\'composer_autoload\'] is set to TRUE but '.APPPATH.'vendor/autoload.php was not found.');
+		}
+		elseif (file_exists($composer_autoload))
+		{
+			require_once($composer_autoload);
+		}
+		else
+		{
+			log_message('error', 'Could not find the specified $config[\'composer_autoload\'] path: '.$composer_autoload);
+		}
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Start the timer... tick tock tick tock...
+ * ------------------------------------------------------
+ */
+	$BM =& load_class('Benchmark', 'core');
+	$BM->mark('total_execution_time_start');
+	$BM->mark('loading_time:_base_classes_start');
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the config class
+ * ------------------------------------------------------
+ *
+ * Note: It is important that Config is loaded first as
+ * most other classes depend on it either directly or by
+ * depending on another class that uses it.
+ *
+ */
+	$CFG =& load_class('Config', 'core');
+
+	// Do we have any manually set config items in the index.php file?
+	if (isset($assign_to_config) && is_array($assign_to_config))
+	{
+		foreach ($assign_to_config as $key => $value)
+		{
+			$CFG->set_item($key, $value);
+		}
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the hooks class
+ * ------------------------------------------------------
+ */
+	$EXT =& load_class('Hooks', 'core', $CFG);
+
+/*
+ * ------------------------------------------------------
+ *  Is there a "pre_system" hook?
+ * ------------------------------------------------------
+ */
+	$EXT->call_hook('pre_system');
+
+/*
+ * ------------------------------------------------------
+ * Important charset-related stuff
+ * ------------------------------------------------------
+ *
+ * Configure mbstring and/or iconv if they are enabled
+ * and set MB_ENABLED and ICONV_ENABLED constants, so
+ * that we don't repeatedly do extension_loaded() or
+ * function_exists() calls.
+ *
+ * Note: UTF-8 class depends on this. It used to be done
+ * in it's constructor, but it's _not_ class-specific.
+ *
+ */
+	$charset = strtoupper(config_item('charset'));
+	ini_set('default_charset', $charset);
+
+	if (extension_loaded('mbstring'))
+	{
+		define('MB_ENABLED', TRUE);
+		// mbstring.internal_encoding is deprecated starting with PHP 5.6
+		// and it's usage triggers E_DEPRECATED messages.
+		@ini_set('mbstring.internal_encoding', $charset);
+		// This is required for mb_convert_encoding() to strip invalid characters.
+		// That's utilized by CI_Utf8, but it's also done for consistency with iconv.
+		mb_substitute_character('none');
+	}
+	else
+	{
+		define('MB_ENABLED', FALSE);
+	}
+
+	// There's an ICONV_IMPL constant, but the PHP manual says that using
+	// iconv's predefined constants is "strongly discouraged".
+	if (extension_loaded('iconv'))
+	{
+		define('ICONV_ENABLED', TRUE);
+		// iconv.internal_encoding is deprecated starting with PHP 5.6
+		// and it's usage triggers E_DEPRECATED messages.
+		@ini_set('iconv.internal_encoding', $charset);
+	}
+	else
+	{
+		define('ICONV_ENABLED', FALSE);
+	}
+
+	if (is_php('5.6'))
+	{
+		ini_set('php.internal_encoding', $charset);
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Load compatibility features
+ * ------------------------------------------------------
+ */
+
+	require_once(BASEPATH.'core/compat/mbstring.php');
+	require_once(BASEPATH.'core/compat/hash.php');
+	require_once(BASEPATH.'core/compat/password.php');
+	require_once(BASEPATH.'core/compat/standard.php');
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the UTF-8 class
+ * ------------------------------------------------------
+ */
+	$UNI =& load_class('Utf8', 'core', $charset);
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the URI class
+ * ------------------------------------------------------
+ */
+	$URI =& load_class('URI', 'core', $CFG);
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the routing class and set the routing
+ * ------------------------------------------------------
+ */
+	$RTR =& load_class('Router', 'core', isset($routing) ? $routing : NULL);
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the output class
+ * ------------------------------------------------------
+ */
+	$OUT =& load_class('Output', 'core');
+
+/*
+ * ------------------------------------------------------
+ *	Is there a valid cache file? If so, we're done...
+ * ------------------------------------------------------
+ */
+	if ($EXT->call_hook('cache_override') === FALSE && $OUT->_display_cache($CFG, $URI) === TRUE)
+	{
+		exit;
+	}
+
+/*
+ * -----------------------------------------------------
+ * Load the security class for xss and csrf support
+ * -----------------------------------------------------
+ */
+	$SEC =& load_class('Security', 'core', $charset);
+
+/*
+ * ------------------------------------------------------
+ *  Load the Input class and sanitize globals
+ * ------------------------------------------------------
+ */
+	$IN =& load_class('Input', 'core', $SEC);
+
+/*
+ * ------------------------------------------------------
+ *  Load the Language class
+ * ------------------------------------------------------
+ */
+	$LANG =& load_class('Lang', 'core');
+
+/*
+ * ------------------------------------------------------
+ *  Load the app controller and local controller
+ * ------------------------------------------------------
+ *
+ */
+	// Load the base controller class
+	require_once BASEPATH.'core/Controller.php';
+
+	/**
+	 * Reference to the CI_Controller method.
+	 *
+	 * Returns current CI instance object
+	 *
+	 * @return CI_Controller
+	 */
+	function &get_instance()
+	{
+		return CI_Controller::get_instance();
+	}
+
+	if (file_exists(APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php'))
+	{
+		require_once APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php';
+	}
+
+	// Set a mark point for benchmarking
+	$BM->mark('loading_time:_base_classes_end');
+
+/*
+ * ------------------------------------------------------
+ *  Sanity checks
+ * ------------------------------------------------------
+ *
+ *  The Router class has already validated the request,
+ *  leaving us with 3 options here:
+ *
+ *	1) an empty class name, if we reached the default
+ *	   controller, but it didn't exist;
+ *	2) a query string which doesn't go through a
+ *	   file_exists() check
+ *	3) a regular request for a non-existing page
+ *
+ *  We handle all of these as a 404 error.
+ *
+ *  Furthermore, none of the methods in the app controller
+ *  or the loader class can be called via the URI, nor can
+ *  controller methods that begin with an underscore.
+ */
+
+	$e404 = FALSE;
+	$class = ucfirst($RTR->class);
+	$method = $RTR->method;
+
+	if (empty($class) OR ! file_exists(APPPATH.'controllers/'.$RTR->directory.$class.'.php'))
+	{
+		$e404 = TRUE;
+	}
+	else
+	{
+		require_once(APPPATH.'controllers/'.$RTR->directory.$class.'.php');
+
+		if ( ! class_exists($class, FALSE) OR $method[0] === '_' OR method_exists('CI_Controller', $method))
+		{
+			$e404 = TRUE;
+		}
+		elseif (method_exists($class, '_remap'))
+		{
+			$params = array($method, array_slice($URI->rsegments, 2));
+			$method = '_remap';
+		}
+		elseif ( ! method_exists($class, $method))
+		{
+			$e404 = TRUE;
+		}
+		/**
+		 * DO NOT CHANGE THIS, NOTHING ELSE WORKS!
+		 *
+		 * - method_exists() returns true for non-public methods, which passes the previous elseif
+		 * - is_callable() returns false for PHP 4-style constructors, even if there's a __construct()
+		 * - method_exists($class, '__construct') won't work because CI_Controller::__construct() is inherited
+		 * - People will only complain if this doesn't work, even though it is documented that it shouldn't.
+		 *
+		 * ReflectionMethod::isConstructor() is the ONLY reliable check,
+		 * knowing which method will be executed as a constructor.
+		 */
+		else
+		{
+			$reflection = new ReflectionMethod($class, $method);
+			if ( ! $reflection->isPublic() OR $reflection->isConstructor())
+			{
+				$e404 = TRUE;
+			}
+		}
+	}
+
+	if ($e404)
+	{
+		if ( ! empty($RTR->routes['404_override']))
+		{
+			if (sscanf($RTR->routes['404_override'], '%[^/]/%s', $error_class, $error_method) !== 2)
+			{
+				$error_method = 'index';
+			}
+
+			$error_class = ucfirst($error_class);
+
+			if ( ! class_exists($error_class, FALSE))
+			{
+				if (file_exists(APPPATH.'controllers/'.$RTR->directory.$error_class.'.php'))
+				{
+					require_once(APPPATH.'controllers/'.$RTR->directory.$error_class.'.php');
+					$e404 = ! class_exists($error_class, FALSE);
+				}
+				// Were we in a directory? If so, check for a global override
+				elseif ( ! empty($RTR->directory) && file_exists(APPPATH.'controllers/'.$error_class.'.php'))
+				{
+					require_once(APPPATH.'controllers/'.$error_class.'.php');
+					if (($e404 = ! class_exists($error_class, FALSE)) === FALSE)
+					{
+						$RTR->directory = '';
+					}
+				}
+			}
+			else
+			{
+				$e404 = FALSE;
+			}
+		}
+
+		// Did we reset the $e404 flag? If so, set the rsegments, starting from index 1
+		if ( ! $e404)
+		{
+			$class = $error_class;
+			$method = $error_method;
+
+			$URI->rsegments = array(
+				1 => $class,
+				2 => $method
+			);
+		}
+		else
+		{
+			show_404($RTR->directory.$class.'/'.$method);
+		}
+	}
+
+	if ($method !== '_remap')
+	{
+		$params = array_slice($URI->rsegments, 2);
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Is there a "pre_controller" hook?
+ * ------------------------------------------------------
+ */
+	$EXT->call_hook('pre_controller');
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the requested controller
+ * ------------------------------------------------------
+ */
+	// Mark a start point so we can benchmark the controller
+	$BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_start');
+
+	$CI = new $class();
+
+/*
+ * ------------------------------------------------------
+ *  Is there a "post_controller_constructor" hook?
+ * ------------------------------------------------------
+ */
+	$EXT->call_hook('post_controller_constructor');
+
+/*
+ * ------------------------------------------------------
+ *  Call the requested method
+ * ------------------------------------------------------
+ */
+	call_user_func_array(array(&$CI, $method), $params);
+
+	// Mark a benchmark end point
+	$BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_end');
+
+/*
+ * ------------------------------------------------------
+ *  Is there a "post_controller" hook?
+ * ------------------------------------------------------
+ */
+	$EXT->call_hook('post_controller');
+
+/*
+ * ------------------------------------------------------
+ *  Send the final rendered output to the browser
+ * ------------------------------------------------------
+ */
+	if ($EXT->call_hook('display_override') === FALSE)
+	{
+		$OUT->_display();
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Is there a "post_system" hook?
+ * ------------------------------------------------------
+ */
+	$EXT->call_hook('post_system');
diff --git a/system/core/Common.php b/system/core/Common.php
new file mode 100644
index 00000000..ed96de0c
--- /dev/null
+++ b/system/core/Common.php
@@ -0,0 +1,853 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Common Functions
+ *
+ * Loads the base classes and executes the request.
+ *
+ * @package		CodeIgniter
+ * @subpackage	CodeIgniter
+ * @category	Common Functions
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('is_php'))
+{
+	/**
+	 * Determines if the current version of PHP is equal to or greater than the supplied value
+	 *
+	 * @param	string
+	 * @return	bool	TRUE if the current version is $version or higher
+	 */
+	function is_php($version)
+	{
+		static $_is_php;
+		$version = (string) $version;
+
+		if ( ! isset($_is_php[$version]))
+		{
+			$_is_php[$version] = version_compare(PHP_VERSION, $version, '>=');
+		}
+
+		return $_is_php[$version];
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('is_really_writable'))
+{
+	/**
+	 * Tests for file writability
+	 *
+	 * is_writable() returns TRUE on Windows servers when you really can't write to
+	 * the file, based on the read-only attribute.
+	 *
+	 * @link	https://bugs.php.net/bug.php?id=54709
+	 * @param	string
+	 * @return	bool
+	 */
+	function is_really_writable($file)
+	{
+		// If we're on a UNIX-like server, just is_writable()
+		if (DIRECTORY_SEPARATOR === '/')
+		{
+			return is_writable($file);
+		}
+
+		/* For Windows servers and safe_mode "on" installations we'll actually
+		 * write a file then read it. Bah...
+		 */
+		if (is_dir($file))
+		{
+			$file = rtrim($file, '/').'/'.md5(mt_rand());
+			if (($fp = @fopen($file, 'ab')) === FALSE)
+			{
+				return FALSE;
+			}
+
+			fclose($fp);
+			@chmod($file, 0777);
+			@unlink($file);
+			return TRUE;
+		}
+		elseif ( ! is_file($file) OR ($fp = @fopen($file, 'ab')) === FALSE)
+		{
+			return FALSE;
+		}
+
+		fclose($fp);
+		return TRUE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('load_class'))
+{
+	/**
+	 * Class registry
+	 *
+	 * This function acts as a singleton. If the requested class does not
+	 * exist it is instantiated and set to a static variable. If it has
+	 * previously been instantiated the variable is returned.
+	 *
+	 * @param	string	the class name being requested
+	 * @param	string	the directory where the class should be found
+	 * @param	mixed	an optional argument to pass to the class constructor
+	 * @return	object
+	 */
+	function &load_class($class, $directory = 'libraries', $param = NULL)
+	{
+		static $_classes = array();
+
+		// Does the class exist? If so, we're done...
+		if (isset($_classes[$class]))
+		{
+			return $_classes[$class];
+		}
+
+		$name = FALSE;
+
+		// Look for the class first in the local application/libraries folder
+		// then in the native system/libraries folder
+		foreach (array(APPPATH, BASEPATH) as $path)
+		{
+			if (file_exists($path.$directory.'/'.$class.'.php'))
+			{
+				$name = 'CI_'.$class;
+
+				if (class_exists($name, FALSE) === FALSE)
+				{
+					require_once($path.$directory.'/'.$class.'.php');
+				}
+
+				break;
+			}
+		}
+
+		// Is the request a class extension? If so we load it too
+		if (file_exists(APPPATH.$directory.'/'.config_item('subclass_prefix').$class.'.php'))
+		{
+			$name = config_item('subclass_prefix').$class;
+
+			if (class_exists($name, FALSE) === FALSE)
+			{
+				require_once(APPPATH.$directory.'/'.$name.'.php');
+			}
+		}
+
+		// Did we find the class?
+		if ($name === FALSE)
+		{
+			// Note: We use exit() rather than show_error() in order to avoid a
+			// self-referencing loop with the Exceptions class
+			set_status_header(503);
+			echo 'Unable to locate the specified class: '.$class.'.php';
+			exit(5); // EXIT_UNK_CLASS
+		}
+
+		// Keep track of what we just loaded
+		is_loaded($class);
+
+		$_classes[$class] = isset($param)
+			? new $name($param)
+			: new $name();
+		return $_classes[$class];
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('is_loaded'))
+{
+	/**
+	 * Keeps track of which libraries have been loaded. This function is
+	 * called by the load_class() function above
+	 *
+	 * @param	string
+	 * @return	array
+	 */
+	function &is_loaded($class = '')
+	{
+		static $_is_loaded = array();
+
+		if ($class !== '')
+		{
+			$_is_loaded[strtolower($class)] = $class;
+		}
+
+		return $_is_loaded;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('get_config'))
+{
+	/**
+	 * Loads the main config.php file
+	 *
+	 * This function lets us grab the config file even if the Config class
+	 * hasn't been instantiated yet
+	 *
+	 * @param	array
+	 * @return	array
+	 */
+	function &get_config(Array $replace = array())
+	{
+		static $config;
+
+		if (empty($config))
+		{
+			$file_path = APPPATH.'config/config.php';
+			$found = FALSE;
+			if (file_exists($file_path))
+			{
+				$found = TRUE;
+				require($file_path);
+			}
+
+			// Is the config file in the environment folder?
+			if (file_exists($file_path = APPPATH.'config/'.ENVIRONMENT.'/config.php'))
+			{
+				require($file_path);
+			}
+			elseif ( ! $found)
+			{
+				set_status_header(503);
+				echo 'The configuration file does not exist.';
+				exit(3); // EXIT_CONFIG
+			}
+
+			// Does the $config array exist in the file?
+			if ( ! isset($config) OR ! is_array($config))
+			{
+				set_status_header(503);
+				echo 'Your config file does not appear to be formatted correctly.';
+				exit(3); // EXIT_CONFIG
+			}
+		}
+
+		// Are any values being dynamically added or replaced?
+		foreach ($replace as $key => $val)
+		{
+			$config[$key] = $val;
+		}
+
+		return $config;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('config_item'))
+{
+	/**
+	 * Returns the specified config item
+	 *
+	 * @param	string
+	 * @return	mixed
+	 */
+	function config_item($item)
+	{
+		static $_config;
+
+		if (empty($_config))
+		{
+			// references cannot be directly assigned to static variables, so we use an array
+			$_config[0] =& get_config();
+		}
+
+		return isset($_config[0][$item]) ? $_config[0][$item] : NULL;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('get_mimes'))
+{
+	/**
+	 * Returns the MIME types array from config/mimes.php
+	 *
+	 * @return	array
+	 */
+	function &get_mimes()
+	{
+		static $_mimes;
+
+		if (empty($_mimes))
+		{
+			$_mimes = file_exists(APPPATH.'config/mimes.php')
+				? include(APPPATH.'config/mimes.php')
+				: array();
+
+			if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/mimes.php'))
+			{
+				$_mimes = array_merge($_mimes, include(APPPATH.'config/'.ENVIRONMENT.'/mimes.php'));
+			}
+		}
+
+		return $_mimes;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('is_https'))
+{
+	/**
+	 * Is HTTPS?
+	 *
+	 * Determines if the application is accessed via an encrypted
+	 * (HTTPS) connection.
+	 *
+	 * @return	bool
+	 */
+	function is_https()
+	{
+		if ( ! empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off')
+		{
+			return TRUE;
+		}
+		elseif (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']) === 'https')
+		{
+			return TRUE;
+		}
+		elseif ( ! empty($_SERVER['HTTP_FRONT_END_HTTPS']) && strtolower($_SERVER['HTTP_FRONT_END_HTTPS']) !== 'off')
+		{
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('is_cli'))
+{
+
+	/**
+	 * Is CLI?
+	 *
+	 * Test to see if a request was made from the command line.
+	 *
+	 * @return 	bool
+	 */
+	function is_cli()
+	{
+		return (PHP_SAPI === 'cli' OR defined('STDIN'));
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('show_error'))
+{
+	/**
+	 * Error Handler
+	 *
+	 * This function lets us invoke the exception class and
+	 * display errors using the standard error template located
+	 * in application/views/errors/error_general.php
+	 * This function will send the error page directly to the
+	 * browser and exit.
+	 *
+	 * @param	string
+	 * @param	int
+	 * @param	string
+	 * @return	void
+	 */
+	function show_error($message, $status_code = 500, $heading = 'An Error Was Encountered')
+	{
+		$status_code = abs($status_code);
+		if ($status_code < 100)
+		{
+			$exit_status = $status_code + 9; // 9 is EXIT__AUTO_MIN
+			$status_code = 500;
+		}
+		else
+		{
+			$exit_status = 1; // EXIT_ERROR
+		}
+
+		$_error =& load_class('Exceptions', 'core');
+		echo $_error->show_error($heading, $message, 'error_general', $status_code);
+		exit($exit_status);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('show_404'))
+{
+	/**
+	 * 404 Page Handler
+	 *
+	 * This function is similar to the show_error() function above
+	 * However, instead of the standard error template it displays
+	 * 404 errors.
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	void
+	 */
+	function show_404($page = '', $log_error = TRUE)
+	{
+		$_error =& load_class('Exceptions', 'core');
+		$_error->show_404($page, $log_error);
+		exit(4); // EXIT_UNKNOWN_FILE
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('log_message'))
+{
+	/**
+	 * Error Logging Interface
+	 *
+	 * We use this as a simple mechanism to access the logging
+	 * class and send messages to be logged.
+	 *
+	 * @param	string	the error level: 'error', 'debug' or 'info'
+	 * @param	string	the error message
+	 * @return	void
+	 */
+	function log_message($level, $message)
+	{
+		static $_log;
+
+		if ($_log === NULL)
+		{
+			// references cannot be directly assigned to static variables, so we use an array
+			$_log[0] =& load_class('Log', 'core');
+		}
+
+		$_log[0]->write_log($level, $message);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_status_header'))
+{
+	/**
+	 * Set HTTP Status Header
+	 *
+	 * @param	int	the status code
+	 * @param	string
+	 * @return	void
+	 */
+	function set_status_header($code = 200, $text = '')
+	{
+		if (is_cli())
+		{
+			return;
+		}
+
+		if (empty($code) OR ! is_numeric($code))
+		{
+			show_error('Status codes must be numeric', 500);
+		}
+
+		if (empty($text))
+		{
+			is_int($code) OR $code = (int) $code;
+			$stati = array(
+				100	=> 'Continue',
+				101	=> 'Switching Protocols',
+				103	=> 'Early Hints',
+
+				200	=> 'OK',
+				201	=> 'Created',
+				202	=> 'Accepted',
+				203	=> 'Non-Authoritative Information',
+				204	=> 'No Content',
+				205	=> 'Reset Content',
+				206	=> 'Partial Content',
+				207	=> 'Multi-Status',
+
+				300	=> 'Multiple Choices',
+				301	=> 'Moved Permanently',
+				302	=> 'Found',
+				303	=> 'See Other',
+				304	=> 'Not Modified',
+				305	=> 'Use Proxy',
+				307	=> 'Temporary Redirect',
+				308	=> 'Permanent Redirect',
+
+				400	=> 'Bad Request',
+				401	=> 'Unauthorized',
+				402	=> 'Payment Required',
+				403	=> 'Forbidden',
+				404	=> 'Not Found',
+				405	=> 'Method Not Allowed',
+				406	=> 'Not Acceptable',
+				407	=> 'Proxy Authentication Required',
+				408	=> 'Request Timeout',
+				409	=> 'Conflict',
+				410	=> 'Gone',
+				411	=> 'Length Required',
+				412	=> 'Precondition Failed',
+				413	=> 'Request Entity Too Large',
+				414	=> 'Request-URI Too Long',
+				415	=> 'Unsupported Media Type',
+				416	=> 'Requested Range Not Satisfiable',
+				417	=> 'Expectation Failed',
+				421	=> 'Misdirected Request',
+				422	=> 'Unprocessable Entity',
+				426	=> 'Upgrade Required',
+				428	=> 'Precondition Required',
+				429	=> 'Too Many Requests',
+				431	=> 'Request Header Fields Too Large',
+				451	=> 'Unavailable For Legal Reasons',
+
+				500	=> 'Internal Server Error',
+				501	=> 'Not Implemented',
+				502	=> 'Bad Gateway',
+				503	=> 'Service Unavailable',
+				504	=> 'Gateway Timeout',
+				505	=> 'HTTP Version Not Supported',
+				511	=> 'Network Authentication Required',
+			);
+
+			if (isset($stati[$code]))
+			{
+				$text = $stati[$code];
+			}
+			else
+			{
+				show_error('No status text available. Please check your status code number or supply your own message text.', 500);
+			}
+		}
+
+		if (strpos(PHP_SAPI, 'cgi') === 0)
+		{
+			header('Status: '.$code.' '.$text, TRUE);
+			return;
+		}
+
+		$server_protocol = (isset($_SERVER['SERVER_PROTOCOL']) && in_array($_SERVER['SERVER_PROTOCOL'], array('HTTP/1.0', 'HTTP/1.1', 'HTTP/2', 'HTTP/2.0'), TRUE))
+			? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.1';
+		header($server_protocol.' '.$code.' '.$text, TRUE, $code);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('_error_handler'))
+{
+	/**
+	 * Error Handler
+	 *
+	 * This is the custom error handler that is declared at the (relative)
+	 * top of CodeIgniter.php. The main reason we use this is to permit
+	 * PHP errors to be logged in our own log files since the user may
+	 * not have access to server logs. Since this function effectively
+	 * intercepts PHP errors, however, we also need to display errors
+	 * based on the current error_reporting level.
+	 * We do that with the use of a PHP error template.
+	 *
+	 * @param	int	$severity
+	 * @param	string	$message
+	 * @param	string	$filepath
+	 * @param	int	$line
+	 * @return	void
+	 */
+	function _error_handler($severity, $message, $filepath, $line)
+	{
+		$is_error = (((E_ERROR | E_PARSE | E_COMPILE_ERROR | E_CORE_ERROR | E_USER_ERROR) & $severity) === $severity);
+
+		// When an error occurred, set the status header to '500 Internal Server Error'
+		// to indicate to the client something went wrong.
+		// This can't be done within the $_error->show_php_error method because
+		// it is only called when the display_errors flag is set (which isn't usually
+		// the case in a production environment) or when errors are ignored because
+		// they are above the error_reporting threshold.
+		if ($is_error)
+		{
+			set_status_header(500);
+		}
+
+		// Should we ignore the error? We'll get the current error_reporting
+		// level and add its bits with the severity bits to find out.
+		if (($severity & error_reporting()) !== $severity)
+		{
+			return;
+		}
+
+		$_error =& load_class('Exceptions', 'core');
+		$_error->log_exception($severity, $message, $filepath, $line);
+
+		// Should we display the error?
+		if (str_ireplace(array('off', 'none', 'no', 'false', 'null'), '', ini_get('display_errors')))
+		{
+			$_error->show_php_error($severity, $message, $filepath, $line);
+		}
+
+		// If the error is fatal, the execution of the script should be stopped because
+		// errors can't be recovered from. Halting the script conforms with PHP's
+		// default error handling. See https://secure.php.net/manual/en/errorfunc.constants.php
+		if ($is_error)
+		{
+			exit(1); // EXIT_ERROR
+		}
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_exception_handler'))
+{
+	/**
+	 * Exception Handler
+	 *
+	 * Sends uncaught exceptions to the logger and displays them
+	 * only if display_errors is On so that they don't show up in
+	 * production environments.
+	 *
+	 * @param	Exception	$exception
+	 * @return	void
+	 */
+	function _exception_handler($exception)
+	{
+		$_error =& load_class('Exceptions', 'core');
+		$_error->log_exception('error', 'Exception: '.$exception->getMessage(), $exception->getFile(), $exception->getLine());
+
+		is_cli() OR set_status_header(500);
+		// Should we display the error?
+		if (str_ireplace(array('off', 'none', 'no', 'false', 'null'), '', ini_get('display_errors')))
+		{
+			$_error->show_exception($exception);
+		}
+
+		exit(1); // EXIT_ERROR
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_shutdown_handler'))
+{
+	/**
+	 * Shutdown Handler
+	 *
+	 * This is the shutdown handler that is declared at the top
+	 * of CodeIgniter.php. The main reason we use this is to simulate
+	 * a complete custom exception handler.
+	 *
+	 * E_STRICT is purposively neglected because such events may have
+	 * been caught. Duplication or none? None is preferred for now.
+	 *
+	 * @link	http://insomanic.me.uk/post/229851073/php-trick-catching-fatal-errors-e-error-with-a
+	 * @return	void
+	 */
+	function _shutdown_handler()
+	{
+		$last_error = error_get_last();
+		if (isset($last_error) &&
+			($last_error['type'] & (E_ERROR | E_PARSE | E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_COMPILE_WARNING)))
+		{
+			_error_handler($last_error['type'], $last_error['message'], $last_error['file'], $last_error['line']);
+		}
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('remove_invisible_characters'))
+{
+	/**
+	 * Remove Invisible Characters
+	 *
+	 * This prevents sandwiching null characters
+	 * between ascii characters, like Java\0script.
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	function remove_invisible_characters($str, $url_encoded = TRUE)
+	{
+		$non_displayables = array();
+
+		// every control character except newline (dec 10),
+		// carriage return (dec 13) and horizontal tab (dec 09)
+		if ($url_encoded)
+		{
+			$non_displayables[] = '/%0[0-8bcef]/i';	// url encoded 00-08, 11, 12, 14, 15
+			$non_displayables[] = '/%1[0-9a-f]/i';	// url encoded 16-31
+			$non_displayables[] = '/%7f/i';	// url encoded 127
+		}
+
+		$non_displayables[] = '/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]+/S';	// 00-08, 11, 12, 14-31, 127
+
+		do
+		{
+			$str = preg_replace($non_displayables, '', $str, -1, $count);
+		}
+		while ($count);
+
+		return $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('html_escape'))
+{
+	/**
+	 * Returns HTML escaped variable.
+	 *
+	 * @param	mixed	$var		The input string or array of strings to be escaped.
+	 * @param	bool	$double_encode	$double_encode set to FALSE prevents escaping twice.
+	 * @return	mixed			The escaped string or array of strings as a result.
+	 */
+	function html_escape($var, $double_encode = TRUE)
+	{
+		if (empty($var))
+		{
+			return $var;
+		}
+
+		if (is_array($var))
+		{
+			foreach (array_keys($var) as $key)
+			{
+				$var[$key] = html_escape($var[$key], $double_encode);
+			}
+
+			return $var;
+		}
+
+		return htmlspecialchars($var, ENT_QUOTES, config_item('charset'), $double_encode);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_stringify_attributes'))
+{
+	/**
+	 * Stringify attributes for use in HTML tags.
+	 *
+	 * Helper function used to convert a string, array, or object
+	 * of attributes to a string.
+	 *
+	 * @param	mixed	string, array, object
+	 * @param	bool
+	 * @return	string
+	 */
+	function _stringify_attributes($attributes, $js = FALSE)
+	{
+		$atts = NULL;
+
+		if (empty($attributes))
+		{
+			return $atts;
+		}
+
+		if (is_string($attributes))
+		{
+			return ' '.$attributes;
+		}
+
+		$attributes = (array) $attributes;
+
+		foreach ($attributes as $key => $val)
+		{
+			$atts .= ($js) ? $key.'='.$val.',' : ' '.$key.'="'.$val.'"';
+		}
+
+		return rtrim($atts, ',');
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('function_usable'))
+{
+	/**
+	 * Function usable
+	 *
+	 * Executes a function_exists() check, and if the Suhosin PHP
+	 * extension is loaded - checks whether the function that is
+	 * checked might be disabled in there as well.
+	 *
+	 * This is useful as function_exists() will return FALSE for
+	 * functions disabled via the *disable_functions* php.ini
+	 * setting, but not for *suhosin.executor.func.blacklist* and
+	 * *suhosin.executor.disable_eval*. These settings will just
+	 * terminate script execution if a disabled function is executed.
+	 *
+	 * The above described behavior turned out to be a bug in Suhosin,
+	 * but even though a fix was committed for 0.9.34 on 2012-02-12,
+	 * that version is yet to be released. This function will therefore
+	 * be just temporary, but would probably be kept for a few years.
+	 *
+	 * @link	http://www.hardened-php.net/suhosin/
+	 * @param	string	$function_name	Function to check for
+	 * @return	bool	TRUE if the function exists and is safe to call,
+	 *			FALSE otherwise.
+	 */
+	function function_usable($function_name)
+	{
+		static $_suhosin_func_blacklist;
+
+		if (function_exists($function_name))
+		{
+			if ( ! isset($_suhosin_func_blacklist))
+			{
+				$_suhosin_func_blacklist = extension_loaded('suhosin')
+					? explode(',', trim(ini_get('suhosin.executor.func.blacklist')))
+					: array();
+			}
+
+			return ! in_array($function_name, $_suhosin_func_blacklist, TRUE);
+		}
+
+		return FALSE;
+	}
+}
diff --git a/system/core/Config.php b/system/core/Config.php
new file mode 100644
index 00000000..e6eb0ad9
--- /dev/null
+++ b/system/core/Config.php
@@ -0,0 +1,365 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Config Class
+ *
+ * This class contains functions that enable config files to be managed
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/config.html
+ */
+class CI_Config {
+
+	/**
+	 * List of all loaded config values
+	 *
+	 * @var	array
+	 */
+	public $config = array();
+
+	/**
+	 * List of all loaded config files
+	 *
+	 * @var	array
+	 */
+	public $is_loaded =	array();
+
+	/**
+	 * List of paths to search when trying to load a config file.
+	 *
+	 * @used-by	CI_Loader
+	 * @var		array
+	 */
+	public $_config_paths =	array(APPPATH);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Sets the $config data from the primary config.php file as a class variable.
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$this->config =& get_config();
+
+		// Set the base_url automatically if none was provided
+		if (empty($this->config['base_url']))
+		{
+			if (isset($_SERVER['SERVER_ADDR']))
+			{
+				if (strpos($_SERVER['SERVER_ADDR'], ':') !== FALSE)
+				{
+					$server_addr = '['.$_SERVER['SERVER_ADDR'].']';
+				}
+				else
+				{
+					$server_addr = $_SERVER['SERVER_ADDR'];
+				}
+
+				$base_url = (is_https() ? 'https' : 'http').'://'.$server_addr
+					.substr($_SERVER['SCRIPT_NAME'], 0, strpos($_SERVER['SCRIPT_NAME'], basename($_SERVER['SCRIPT_FILENAME'])));
+			}
+			else
+			{
+				$base_url = 'http://localhost/';
+			}
+
+			$this->set_item('base_url', $base_url);
+		}
+
+		log_message('info', 'Config Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Load Config File
+	 *
+	 * @param	string	$file			Configuration file name
+	 * @param	bool	$use_sections		Whether configuration values should be loaded into their own section
+	 * @param	bool	$fail_gracefully	Whether to just return FALSE or display an error message
+	 * @return	bool	TRUE if the file was loaded correctly or FALSE on failure
+	 */
+	public function load($file = '', $use_sections = FALSE, $fail_gracefully = FALSE)
+	{
+		$file = ($file === '') ? 'config' : str_replace('.php', '', $file);
+		$loaded = FALSE;
+
+		foreach ($this->_config_paths as $path)
+		{
+			foreach (array($file, ENVIRONMENT.DIRECTORY_SEPARATOR.$file) as $location)
+			{
+				$file_path = $path.'config/'.$location.'.php';
+				if (in_array($file_path, $this->is_loaded, TRUE))
+				{
+					return TRUE;
+				}
+
+				if ( ! file_exists($file_path))
+				{
+					continue;
+				}
+
+				include($file_path);
+
+				if ( ! isset($config) OR ! is_array($config))
+				{
+					if ($fail_gracefully === TRUE)
+					{
+						return FALSE;
+					}
+
+					show_error('Your '.$file_path.' file does not appear to contain a valid configuration array.');
+				}
+
+				if ($use_sections === TRUE)
+				{
+					$this->config[$file] = isset($this->config[$file])
+						? array_merge($this->config[$file], $config)
+						: $config;
+				}
+				else
+				{
+					$this->config = array_merge($this->config, $config);
+				}
+
+				$this->is_loaded[] = $file_path;
+				$config = NULL;
+				$loaded = TRUE;
+				log_message('info', 'Config file loaded: '.$file_path);
+			}
+		}
+
+		if ($loaded === TRUE)
+		{
+			return TRUE;
+		}
+		elseif ($fail_gracefully === TRUE)
+		{
+			return FALSE;
+		}
+
+		show_error('The configuration file '.$file.'.php does not exist.');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch a config file item
+	 *
+	 * @param	string	$item	Config item name
+	 * @param	string	$index	Index name
+	 * @return	string|null	The configuration item or NULL if the item doesn't exist
+	 */
+	public function item($item, $index = '')
+	{
+		if ($index == '')
+		{
+			return isset($this->config[$item]) ? $this->config[$item] : NULL;
+		}
+
+		return isset($this->config[$index], $this->config[$index][$item]) ? $this->config[$index][$item] : NULL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch a config file item with slash appended (if not empty)
+	 *
+	 * @param	string		$item	Config item name
+	 * @return	string|null	The configuration item or NULL if the item doesn't exist
+	 */
+	public function slash_item($item)
+	{
+		if ( ! isset($this->config[$item]))
+		{
+			return NULL;
+		}
+		elseif (trim($this->config[$item]) === '')
+		{
+			return '';
+		}
+
+		return rtrim($this->config[$item], '/').'/';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Site URL
+	 *
+	 * Returns base_url . index_page [. uri_string]
+	 *
+	 * @uses	CI_Config::_uri_string()
+	 *
+	 * @param	string|string[]	$uri	URI string or an array of segments
+	 * @param	string	$protocol
+	 * @return	string
+	 */
+	public function site_url($uri = '', $protocol = NULL)
+	{
+		$base_url = $this->slash_item('base_url');
+
+		if (isset($protocol))
+		{
+			// For protocol-relative links
+			if ($protocol === '')
+			{
+				$base_url = substr($base_url, strpos($base_url, '//'));
+			}
+			else
+			{
+				$base_url = $protocol.substr($base_url, strpos($base_url, '://'));
+			}
+		}
+
+		if (empty($uri))
+		{
+			return $base_url.$this->item('index_page');
+		}
+
+		$uri = $this->_uri_string($uri);
+
+		if ($this->item('enable_query_strings') === FALSE)
+		{
+			$suffix = isset($this->config['url_suffix']) ? $this->config['url_suffix'] : '';
+
+			if ($suffix !== '')
+			{
+				if (($offset = strpos($uri, '?')) !== FALSE)
+				{
+					$uri = substr($uri, 0, $offset).$suffix.substr($uri, $offset);
+				}
+				else
+				{
+					$uri .= $suffix;
+				}
+			}
+
+			return $base_url.$this->slash_item('index_page').$uri;
+		}
+		elseif (strpos($uri, '?') === FALSE)
+		{
+			$uri = '?'.$uri;
+		}
+
+		return $base_url.$this->item('index_page').$uri;
+	}
+
+	// -------------------------------------------------------------
+
+	/**
+	 * Base URL
+	 *
+	 * Returns base_url [. uri_string]
+	 *
+	 * @uses	CI_Config::_uri_string()
+	 *
+	 * @param	string|string[]	$uri	URI string or an array of segments
+	 * @param	string	$protocol
+	 * @return	string
+	 */
+	public function base_url($uri = '', $protocol = NULL)
+	{
+		$base_url = $this->slash_item('base_url');
+
+		if (isset($protocol))
+		{
+			// For protocol-relative links
+			if ($protocol === '')
+			{
+				$base_url = substr($base_url, strpos($base_url, '//'));
+			}
+			else
+			{
+				$base_url = $protocol.substr($base_url, strpos($base_url, '://'));
+			}
+		}
+
+		return $base_url.$this->_uri_string($uri);
+	}
+
+	// -------------------------------------------------------------
+
+	/**
+	 * Build URI string
+	 *
+	 * @used-by	CI_Config::site_url()
+	 * @used-by	CI_Config::base_url()
+	 *
+	 * @param	string|string[]	$uri	URI string or an array of segments
+	 * @return	string
+	 */
+	protected function _uri_string($uri)
+	{
+		if ($this->item('enable_query_strings') === FALSE)
+		{
+			is_array($uri) && $uri = implode('/', $uri);
+			return ltrim($uri, '/');
+		}
+		elseif (is_array($uri))
+		{
+			return http_build_query($uri);
+		}
+
+		return $uri;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set a config file item
+	 *
+	 * @param	string	$item	Config item key
+	 * @param	string	$value	Config item value
+	 * @return	void
+	 */
+	public function set_item($item, $value)
+	{
+		$this->config[$item] = $value;
+	}
+
+}
diff --git a/system/core/Controller.php b/system/core/Controller.php
new file mode 100644
index 00000000..ac27989f
--- /dev/null
+++ b/system/core/Controller.php
@@ -0,0 +1,103 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Application Controller Class
+ *
+ * This class object is the super class that every library in
+ * CodeIgniter will be assigned to.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/general/controllers.html
+ */
+class CI_Controller {
+
+	/**
+	 * Reference to the CI singleton
+	 *
+	 * @var	object
+	 */
+	private static $instance;
+
+	/**
+	 * CI_Loader
+	 *
+	 * @var	CI_Loader
+	 */
+	public $load;
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		self::$instance =& $this;
+
+		// Assign all the class objects that were instantiated by the
+		// bootstrap file (CodeIgniter.php) to local class variables
+		// so that CI can run as one big super object.
+		foreach (is_loaded() as $var => $class)
+		{
+			$this->$var =& load_class($class);
+		}
+
+		$this->load =& load_class('Loader', 'core');
+		$this->load->initialize();
+		log_message('info', 'Controller Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the CI singleton
+	 *
+	 * @static
+	 * @return	object
+	 */
+	public static function &get_instance()
+	{
+		return self::$instance;
+	}
+
+}
diff --git a/system/core/Exceptions.php b/system/core/Exceptions.php
new file mode 100644
index 00000000..92c635f9
--- /dev/null
+++ b/system/core/Exceptions.php
@@ -0,0 +1,286 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Exceptions Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Exceptions
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/exceptions.html
+ */
+class CI_Exceptions {
+
+	/**
+	 * Nesting level of the output buffering mechanism
+	 *
+	 * @var	int
+	 */
+	public $ob_level;
+
+	/**
+	 * List of available error levels
+	 *
+	 * @var	array
+	 */
+	public $levels = array(
+		E_ERROR			=>	'Error',
+		E_WARNING		=>	'Warning',
+		E_PARSE			=>	'Parsing Error',
+		E_NOTICE		=>	'Notice',
+		E_CORE_ERROR		=>	'Core Error',
+		E_CORE_WARNING		=>	'Core Warning',
+		E_COMPILE_ERROR		=>	'Compile Error',
+		E_COMPILE_WARNING	=>	'Compile Warning',
+		E_USER_ERROR		=>	'User Error',
+		E_USER_WARNING		=>	'User Warning',
+		E_USER_NOTICE		=>	'User Notice',
+		E_STRICT		=>	'Runtime Notice'
+	);
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$this->ob_level = ob_get_level();
+		// Note: Do not log messages from this constructor.
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Exception Logger
+	 *
+	 * Logs PHP generated error messages
+	 *
+	 * @param	int	$severity	Log level
+	 * @param	string	$message	Error message
+	 * @param	string	$filepath	File path
+	 * @param	int	$line		Line number
+	 * @return	void
+	 */
+	public function log_exception($severity, $message, $filepath, $line)
+	{
+		$severity = isset($this->levels[$severity]) ? $this->levels[$severity] : $severity;
+		log_message('error', 'Severity: '.$severity.' --> '.$message.' '.$filepath.' '.$line);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * 404 Error Handler
+	 *
+	 * @uses	CI_Exceptions::show_error()
+	 *
+	 * @param	string	$page		Page URI
+	 * @param 	bool	$log_error	Whether to log the error
+	 * @return	void
+	 */
+	public function show_404($page = '', $log_error = TRUE)
+	{
+		if (is_cli())
+		{
+			$heading = 'Not Found';
+			$message = 'The controller/method pair you requested was not found.';
+		}
+		else
+		{
+			$heading = '404 Page Not Found';
+			$message = 'The page you requested was not found.';
+		}
+
+		// By default we log this, but allow a dev to skip it
+		if ($log_error)
+		{
+			log_message('error', $heading.': '.$page);
+		}
+
+		echo $this->show_error($heading, $message, 'error_404', 404);
+		exit(4); // EXIT_UNKNOWN_FILE
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * General Error Page
+	 *
+	 * Takes an error message as input (either as a string or an array)
+	 * and displays it using the specified template.
+	 *
+	 * @param	string		$heading	Page heading
+	 * @param	string|string[]	$message	Error message
+	 * @param	string		$template	Template name
+	 * @param 	int		$status_code	(default: 500)
+	 *
+	 * @return	string	Error page output
+	 */
+	public function show_error($heading, $message, $template = 'error_general', $status_code = 500)
+	{
+		$templates_path = config_item('error_views_path');
+		if (empty($templates_path))
+		{
+			$templates_path = VIEWPATH.'errors'.DIRECTORY_SEPARATOR;
+		}
+		else
+		{
+			$templates_path = rtrim($templates_path, '/\\').DIRECTORY_SEPARATOR;
+		}
+
+		if (is_cli())
+		{
+			$message = "\t".(is_array($message) ? implode("\n\t", $message) : $message);
+			$template = 'cli'.DIRECTORY_SEPARATOR.$template;
+		}
+		else
+		{
+			set_status_header($status_code);
+			$message = '<p>'.(is_array($message) ? implode('</p><p>', $message) : $message).'</p>';
+			$template = 'html'.DIRECTORY_SEPARATOR.$template;
+		}
+
+		if (ob_get_level() > $this->ob_level + 1)
+		{
+			ob_end_flush();
+		}
+		ob_start();
+		include($templates_path.$template.'.php');
+		$buffer = ob_get_contents();
+		ob_end_clean();
+		return $buffer;
+	}
+
+	// --------------------------------------------------------------------
+
+	public function show_exception($exception)
+	{
+		$templates_path = config_item('error_views_path');
+		if (empty($templates_path))
+		{
+			$templates_path = VIEWPATH.'errors'.DIRECTORY_SEPARATOR;
+		}
+		else
+		{
+			$templates_path = rtrim($templates_path, '/\\').DIRECTORY_SEPARATOR;
+		}
+
+		$message = $exception->getMessage();
+		if (empty($message))
+		{
+			$message = '(null)';
+		}
+
+		if (is_cli())
+		{
+			$templates_path .= 'cli'.DIRECTORY_SEPARATOR;
+		}
+		else
+		{
+			$templates_path .= 'html'.DIRECTORY_SEPARATOR;
+		}
+
+		if (ob_get_level() > $this->ob_level + 1)
+		{
+			ob_end_flush();
+		}
+
+		ob_start();
+		include($templates_path.'error_exception.php');
+		$buffer = ob_get_contents();
+		ob_end_clean();
+		echo $buffer;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Native PHP error handler
+	 *
+	 * @param	int	$severity	Error level
+	 * @param	string	$message	Error message
+	 * @param	string	$filepath	File path
+	 * @param	int	$line		Line number
+	 * @return	void
+	 */
+	public function show_php_error($severity, $message, $filepath, $line)
+	{
+		$templates_path = config_item('error_views_path');
+		if (empty($templates_path))
+		{
+			$templates_path = VIEWPATH.'errors'.DIRECTORY_SEPARATOR;
+		}
+		else
+		{
+			$templates_path = rtrim($templates_path, '/\\').DIRECTORY_SEPARATOR;
+		}
+
+		$severity = isset($this->levels[$severity]) ? $this->levels[$severity] : $severity;
+
+		// For safety reasons we don't show the full file path in non-CLI requests
+		if ( ! is_cli())
+		{
+			$filepath = str_replace('\\', '/', $filepath);
+			if (FALSE !== strpos($filepath, '/'))
+			{
+				$x = explode('/', $filepath);
+				$filepath = $x[count($x)-2].'/'.end($x);
+			}
+
+			$template = 'html'.DIRECTORY_SEPARATOR.'error_php';
+		}
+		else
+		{
+			$template = 'cli'.DIRECTORY_SEPARATOR.'error_php';
+		}
+
+		if (ob_get_level() > $this->ob_level + 1)
+		{
+			ob_end_flush();
+		}
+		ob_start();
+		include($templates_path.$template.'.php');
+		$buffer = ob_get_contents();
+		ob_end_clean();
+		echo $buffer;
+	}
+
+}
diff --git a/system/core/Hooks.php b/system/core/Hooks.php
new file mode 100644
index 00000000..864c59d2
--- /dev/null
+++ b/system/core/Hooks.php
@@ -0,0 +1,266 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Hooks Class
+ *
+ * Provides a mechanism to extend the base system without hacking.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/general/hooks.html
+ */
+class CI_Hooks {
+
+	/**
+	 * Determines whether hooks are enabled
+	 *
+	 * @var	bool
+	 */
+	public $enabled = FALSE;
+
+	/**
+	 * List of all hooks set in config/hooks.php
+	 *
+	 * @var	array
+	 */
+	public $hooks =	array();
+
+	/**
+	 * Array with class objects to use hooks methods
+	 *
+	 * @var array
+	 */
+	protected $_objects = array();
+
+	/**
+	 * In progress flag
+	 *
+	 * Determines whether hook is in progress, used to prevent infinte loops
+	 *
+	 * @var	bool
+	 */
+	protected $_in_progress = FALSE;
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	CI_Config	$config
+	 * @return	void
+	 */
+	public function __construct(CI_Config $config)
+	{
+		log_message('info', 'Hooks Class Initialized');
+
+		// If hooks are not enabled in the config file
+		// there is nothing else to do
+		if ($config->item('enable_hooks') === FALSE)
+		{
+			return;
+		}
+
+		// Grab the "hooks" definition file.
+		if (file_exists(APPPATH.'config/hooks.php'))
+		{
+			include(APPPATH.'config/hooks.php');
+		}
+
+		if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/hooks.php'))
+		{
+			include(APPPATH.'config/'.ENVIRONMENT.'/hooks.php');
+		}
+
+		// If there are no hooks, we're done.
+		if ( ! isset($hook) OR ! is_array($hook))
+		{
+			return;
+		}
+
+		$this->hooks =& $hook;
+		$this->enabled = TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Call Hook
+	 *
+	 * Calls a particular hook. Called by CodeIgniter.php.
+	 *
+	 * @uses	CI_Hooks::_run_hook()
+	 *
+	 * @param	string	$which	Hook name
+	 * @return	bool	TRUE on success or FALSE on failure
+	 */
+	public function call_hook($which = '')
+	{
+		if ( ! $this->enabled OR ! isset($this->hooks[$which]))
+		{
+			return FALSE;
+		}
+
+		if (is_array($this->hooks[$which]) && ! isset($this->hooks[$which]['function']))
+		{
+			foreach ($this->hooks[$which] as $val)
+			{
+				$this->_run_hook($val);
+			}
+		}
+		else
+		{
+			$this->_run_hook($this->hooks[$which]);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Run Hook
+	 *
+	 * Runs a particular hook
+	 *
+	 * @param	array	$data	Hook details
+	 * @return	bool	TRUE on success or FALSE on failure
+	 */
+	protected function _run_hook($data)
+	{
+		// Closures/lambda functions and array($object, 'method') callables
+		if (is_callable($data))
+		{
+			is_array($data)
+				? $data[0]->{$data[1]}()
+				: $data();
+
+			return TRUE;
+		}
+		elseif ( ! is_array($data))
+		{
+			return FALSE;
+		}
+
+		// -----------------------------------
+		// Safety - Prevents run-away loops
+		// -----------------------------------
+
+		// If the script being called happens to have the same
+		// hook call within it a loop can happen
+		if ($this->_in_progress === TRUE)
+		{
+			return;
+		}
+
+		// -----------------------------------
+		// Set file path
+		// -----------------------------------
+
+		if ( ! isset($data['filepath'], $data['filename']))
+		{
+			return FALSE;
+		}
+
+		$filepath = APPPATH.$data['filepath'].'/'.$data['filename'];
+
+		if ( ! file_exists($filepath))
+		{
+			return FALSE;
+		}
+
+		// Determine and class and/or function names
+		$class		= empty($data['class']) ? FALSE : $data['class'];
+		$function	= empty($data['function']) ? FALSE : $data['function'];
+		$params		= isset($data['params']) ? $data['params'] : '';
+
+		if (empty($function))
+		{
+			return FALSE;
+		}
+
+		// Set the _in_progress flag
+		$this->_in_progress = TRUE;
+
+		// Call the requested class and/or function
+		if ($class !== FALSE)
+		{
+			// The object is stored?
+			if (isset($this->_objects[$class]))
+			{
+				if (method_exists($this->_objects[$class], $function))
+				{
+					$this->_objects[$class]->$function($params);
+				}
+				else
+				{
+					return $this->_in_progress = FALSE;
+				}
+			}
+			else
+			{
+				class_exists($class, FALSE) OR require_once($filepath);
+
+				if ( ! class_exists($class, FALSE) OR ! method_exists($class, $function))
+				{
+					return $this->_in_progress = FALSE;
+				}
+
+				// Store the object and execute the method
+				$this->_objects[$class] = new $class();
+				$this->_objects[$class]->$function($params);
+			}
+		}
+		else
+		{
+			function_exists($function) OR require_once($filepath);
+
+			if ( ! function_exists($function))
+			{
+				return $this->_in_progress = FALSE;
+			}
+
+			$function($params);
+		}
+
+		$this->_in_progress = FALSE;
+		return TRUE;
+	}
+
+}
diff --git a/system/core/Input.php b/system/core/Input.php
new file mode 100644
index 00000000..30d528b8
--- /dev/null
+++ b/system/core/Input.php
@@ -0,0 +1,662 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Input Class
+ *
+ * Pre-processes global input data for security
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Input
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/input.html
+ */
+class CI_Input {
+
+	/**
+	 * IP address of the current user
+	 *
+	 * @var	string
+	 */
+	protected $ip_address = FALSE;
+
+	/**
+	 * List of all HTTP request headers
+	 *
+	 * @var array
+	 */
+	protected $headers = array();
+
+	/**
+	 * Raw input stream data
+	 *
+	 * Holds a cache of php://input contents
+	 *
+	 * @var	string
+	 */
+	protected $_raw_input_stream;
+
+	/**
+	 * Parsed input stream data
+	 *
+	 * Parsed from php://input at runtime
+	 *
+	 * @see	CI_Input::input_stream()
+	 * @var	array
+	 */
+	protected $_input_stream;
+
+	/**
+	 * CI_Security instance
+	 *
+	 * Used for the optional $xss_filter parameter that most
+	 * getter methods have here.
+	 *
+	 * @var	CI_Security
+	 */
+	protected $security;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Determines whether to globally enable the XSS processing
+	 * and whether to allow the $_GET array.
+	 *
+	 * @return	void
+	 */
+	public function __construct(CI_Security &$security)
+	{
+		$this->security = $security;
+		log_message('info', 'Input Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch from array
+	 *
+	 * Internal method used to retrieve values from global arrays.
+	 *
+	 * @param	array	&$array		$_GET, $_POST, $_COOKIE, $_SERVER, etc.
+	 * @param	mixed	$index		Index for item to be fetched from $array
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	protected function _fetch_from_array(&$array, $index = NULL, $xss_clean = FALSE)
+	{
+		// If $index is NULL, it means that the whole $array is requested
+		isset($index) OR $index = array_keys($array);
+
+		// allow fetching multiple keys at once
+		if (is_array($index))
+		{
+			$output = array();
+			foreach ($index as $key)
+			{
+				$output[$key] = $this->_fetch_from_array($array, $key, $xss_clean);
+			}
+
+			return $output;
+		}
+
+		if (isset($array[$index]))
+		{
+			$value = $array[$index];
+		}
+		elseif (($count = preg_match_all('/(?:^[^\[]+)|\[[^]]*\]/', $index, $matches)) > 1) // Does the index contain array notation
+		{
+			$value = $array;
+			for ($i = 0; $i < $count; $i++)
+			{
+				$key = trim($matches[0][$i], '[]');
+				if ($key === '') // Empty notation will return the value as array
+				{
+					break;
+				}
+
+				if (isset($value[$key]))
+				{
+					$value = $value[$key];
+				}
+				else
+				{
+					return NULL;
+				}
+			}
+		}
+		else
+		{
+			return NULL;
+		}
+
+		return ($xss_clean === TRUE)
+			? $this->security->xss_clean($value)
+			: $value;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from the GET array
+	 *
+	 * @param	mixed	$index		Index for item to be fetched from $_GET
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function get($index = NULL, $xss_clean = FALSE)
+	{
+		return $this->_fetch_from_array($_GET, $index, $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from the POST array
+	 *
+	 * @param	mixed	$index		Index for item to be fetched from $_POST
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function post($index = NULL, $xss_clean = FALSE)
+	{
+		return $this->_fetch_from_array($_POST, $index, $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from POST data with fallback to GET
+	 *
+	 * @param	string	$index		Index for item to be fetched from $_POST or $_GET
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function post_get($index, $xss_clean = FALSE)
+	{
+		$output = $this->post($index, $xss_clean);
+		return isset($output) ? $output : $this->get($index, $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from GET data with fallback to POST
+	 *
+	 * @param	string	$index		Index for item to be fetched from $_GET or $_POST
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function get_post($index, $xss_clean = FALSE)
+	{
+		$output = $this->get($index, $xss_clean);
+		return isset($output) ? $output : $this->post($index, $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from the COOKIE array
+	 *
+	 * @param	mixed	$index		Index for item to be fetched from $_COOKIE
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function cookie($index = NULL, $xss_clean = FALSE)
+	{
+		return $this->_fetch_from_array($_COOKIE, $index, $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from the SERVER array
+	 *
+	 * @param	mixed	$index		Index for item to be fetched from $_SERVER
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function server($index, $xss_clean = FALSE)
+	{
+		return $this->_fetch_from_array($_SERVER, $index, $xss_clean);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from the php://input stream
+	 *
+	 * Useful when you need to access PUT, DELETE or PATCH request data.
+	 *
+	 * @param	string	$index		Index for item to be fetched
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function input_stream($index = NULL, $xss_clean = FALSE)
+	{
+		// Prior to PHP 5.6, the input stream can only be read once,
+		// so we'll need to check if we have already done that first.
+		if ( ! is_array($this->_input_stream))
+		{
+			// $this->raw_input_stream will trigger __get().
+			parse_str($this->raw_input_stream, $this->_input_stream);
+			is_array($this->_input_stream) OR $this->_input_stream = array();
+		}
+
+		return $this->_fetch_from_array($this->_input_stream, $index, $xss_clean);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Set cookie
+	 *
+	 * Accepts an arbitrary number of parameters (up to 7) or an associative
+	 * array in the first parameter containing all the values.
+	 *
+	 * @param	string|mixed[]	$name		Cookie name or an array containing parameters
+	 * @param	string		$value		Cookie value
+	 * @param	int		$expire		Cookie expiration time in seconds
+	 * @param	string		$domain		Cookie domain (e.g.: '.yourdomain.com')
+	 * @param	string		$path		Cookie path (default: '/')
+	 * @param	string		$prefix		Cookie name prefix
+	 * @param	bool		$secure		Whether to only transfer cookies via SSL
+	 * @param	bool		$httponly	Whether to only makes the cookie accessible via HTTP (no javascript)
+	 * @return	void
+	 */
+	public function set_cookie($name, $value = '', $expire = 0, $domain = '', $path = '/', $prefix = '', $secure = NULL, $httponly = NULL)
+	{
+		if (is_array($name))
+		{
+			// always leave 'name' in last place, as the loop will break otherwise, due to $$item
+			foreach (array('value', 'expire', 'domain', 'path', 'prefix', 'secure', 'httponly', 'name') as $item)
+			{
+				if (isset($name[$item]))
+				{
+					$$item = $name[$item];
+				}
+			}
+		}
+
+		if ($prefix === '' && config_item('cookie_prefix') !== '')
+		{
+			$prefix = config_item('cookie_prefix');
+		}
+
+		if ($domain == '' && config_item('cookie_domain') != '')
+		{
+			$domain = config_item('cookie_domain');
+		}
+
+		if ($path === '/' && config_item('cookie_path') !== '/')
+		{
+			$path = config_item('cookie_path');
+		}
+
+		$secure = ($secure === NULL && config_item('cookie_secure') !== NULL)
+			? (bool) config_item('cookie_secure')
+			: (bool) $secure;
+
+		$httponly = ($httponly === NULL && config_item('cookie_httponly') !== NULL)
+			? (bool) config_item('cookie_httponly')
+			: (bool) $httponly;
+
+		if ( ! is_numeric($expire) OR $expire < 0)
+		{
+			$expire = 1;
+		}
+		else
+		{
+			$expire = ($expire > 0) ? time() + $expire : 0;
+		}
+
+		setcookie($prefix.$name, $value, $expire, $path, $domain, $secure, $httponly);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch the IP Address
+	 *
+	 * Determines and validates the visitor's IP address.
+	 *
+	 * @return	string	IP address
+	 */
+	public function ip_address()
+	{
+		if ($this->ip_address !== FALSE)
+		{
+			return $this->ip_address;
+		}
+
+		$proxy_ips = config_item('proxy_ips');
+		if ( ! empty($proxy_ips) && ! is_array($proxy_ips))
+		{
+			$proxy_ips = explode(',', str_replace(' ', '', $proxy_ips));
+		}
+
+		$this->ip_address = $this->server('REMOTE_ADDR');
+
+		if ($proxy_ips)
+		{
+			foreach (array('HTTP_X_FORWARDED_FOR', 'HTTP_CLIENT_IP', 'HTTP_X_CLIENT_IP', 'HTTP_X_CLUSTER_CLIENT_IP') as $header)
+			{
+				if (($spoof = $this->server($header)) !== NULL)
+				{
+					// Some proxies typically list the whole chain of IP
+					// addresses through which the client has reached us.
+					// e.g. client_ip, proxy_ip1, proxy_ip2, etc.
+					sscanf($spoof, '%[^,]', $spoof);
+
+					if ( ! $this->valid_ip($spoof))
+					{
+						$spoof = NULL;
+					}
+					else
+					{
+						break;
+					}
+				}
+			}
+
+			if ($spoof)
+			{
+				for ($i = 0, $c = count($proxy_ips); $i < $c; $i++)
+				{
+					// Check if we have an IP address or a subnet
+					if (strpos($proxy_ips[$i], '/') === FALSE)
+					{
+						// An IP address (and not a subnet) is specified.
+						// We can compare right away.
+						if ($proxy_ips[$i] === $this->ip_address)
+						{
+							$this->ip_address = $spoof;
+							break;
+						}
+
+						continue;
+					}
+
+					// We have a subnet ... now the heavy lifting begins
+					isset($separator) OR $separator = $this->valid_ip($this->ip_address, 'ipv6') ? ':' : '.';
+
+					// If the proxy entry doesn't match the IP protocol - skip it
+					if (strpos($proxy_ips[$i], $separator) === FALSE)
+					{
+						continue;
+					}
+
+					// Convert the REMOTE_ADDR IP address to binary, if needed
+					if ( ! isset($ip, $sprintf))
+					{
+						if ($separator === ':')
+						{
+							// Make sure we're have the "full" IPv6 format
+							$ip = explode(':',
+								str_replace('::',
+									str_repeat(':', 9 - substr_count($this->ip_address, ':')),
+									$this->ip_address
+								)
+							);
+
+							for ($j = 0; $j < 8; $j++)
+							{
+								$ip[$j] = intval($ip[$j], 16);
+							}
+
+							$sprintf = '%016b%016b%016b%016b%016b%016b%016b%016b';
+						}
+						else
+						{
+							$ip = explode('.', $this->ip_address);
+							$sprintf = '%08b%08b%08b%08b';
+						}
+
+						$ip = vsprintf($sprintf, $ip);
+					}
+
+					// Split the netmask length off the network address
+					sscanf($proxy_ips[$i], '%[^/]/%d', $netaddr, $masklen);
+
+					// Again, an IPv6 address is most likely in a compressed form
+					if ($separator === ':')
+					{
+						$netaddr = explode(':', str_replace('::', str_repeat(':', 9 - substr_count($netaddr, ':')), $netaddr));
+						for ($j = 0; $j < 8; $j++)
+						{
+							$netaddr[$j] = intval($netaddr[$j], 16);
+						}
+					}
+					else
+					{
+						$netaddr = explode('.', $netaddr);
+					}
+
+					// Convert to binary and finally compare
+					if (strncmp($ip, vsprintf($sprintf, $netaddr), $masklen) === 0)
+					{
+						$this->ip_address = $spoof;
+						break;
+					}
+				}
+			}
+		}
+
+		if ( ! $this->valid_ip($this->ip_address))
+		{
+			return $this->ip_address = '0.0.0.0';
+		}
+
+		return $this->ip_address;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate IP Address
+	 *
+	 * @param	string	$ip	IP address
+	 * @param	string	$which	IP protocol: 'ipv4' or 'ipv6'
+	 * @return	bool
+	 */
+	public function valid_ip($ip, $which = '')
+	{
+		switch (strtolower($which))
+		{
+			case 'ipv4':
+				$which = FILTER_FLAG_IPV4;
+				break;
+			case 'ipv6':
+				$which = FILTER_FLAG_IPV6;
+				break;
+			default:
+				$which = NULL;
+				break;
+		}
+
+		return (bool) filter_var($ip, FILTER_VALIDATE_IP, $which);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch User Agent string
+	 *
+	 * @return	string|null	User Agent string or NULL if it doesn't exist
+	 */
+	public function user_agent($xss_clean = FALSE)
+	{
+		return $this->_fetch_from_array($_SERVER, 'HTTP_USER_AGENT', $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Request Headers
+	 *
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	array
+	 */
+	public function request_headers($xss_clean = FALSE)
+	{
+		// If header is already defined, return it immediately
+		if ( ! empty($this->headers))
+		{
+			return $this->_fetch_from_array($this->headers, NULL, $xss_clean);
+		}
+
+		// In Apache, you can simply call apache_request_headers()
+		if (function_exists('apache_request_headers'))
+		{
+			$this->headers = apache_request_headers();
+		}
+		else
+		{
+			isset($_SERVER['CONTENT_TYPE']) && $this->headers['Content-Type'] = $_SERVER['CONTENT_TYPE'];
+
+			foreach ($_SERVER as $key => $val)
+			{
+				if (sscanf($key, 'HTTP_%s', $header) === 1)
+				{
+					// take SOME_HEADER and turn it into Some-Header
+					$header = str_replace('_', ' ', strtolower($header));
+					$header = str_replace(' ', '-', ucwords($header));
+
+					$this->headers[$header] = $_SERVER[$key];
+				}
+			}
+		}
+
+		return $this->_fetch_from_array($this->headers, NULL, $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Request Header
+	 *
+	 * Returns the value of a single member of the headers class member
+	 *
+	 * @param	string		$index		Header name
+	 * @param	bool		$xss_clean	Whether to apply XSS filtering
+	 * @return	string|null	The requested header on success or NULL on failure
+	 */
+	public function get_request_header($index, $xss_clean = FALSE)
+	{
+		static $headers;
+
+		if ( ! isset($headers))
+		{
+			empty($this->headers) && $this->request_headers();
+			foreach ($this->headers as $key => $value)
+			{
+				$headers[strtolower($key)] = $value;
+			}
+		}
+
+		$index = strtolower($index);
+
+		if ( ! isset($headers[$index]))
+		{
+			return NULL;
+		}
+
+		return ($xss_clean === TRUE)
+			? $this->security->xss_clean($headers[$index])
+			: $headers[$index];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is AJAX request?
+	 *
+	 * Test to see if a request contains the HTTP_X_REQUESTED_WITH header.
+	 *
+	 * @return 	bool
+	 */
+	public function is_ajax_request()
+	{
+		return ( ! empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) === 'xmlhttprequest');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Request Method
+	 *
+	 * Return the request method
+	 *
+	 * @param	bool	$upper	Whether to return in upper or lower case
+	 *				(default: FALSE)
+	 * @return 	string
+	 */
+	public function method($upper = FALSE)
+	{
+		return ($upper)
+			? strtoupper($this->server('REQUEST_METHOD'))
+			: strtolower($this->server('REQUEST_METHOD'));
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Magic __get()
+	 *
+	 * Allows read access to protected properties
+	 *
+	 * @param	string	$name
+	 * @return	mixed
+	 */
+	public function __get($name)
+	{
+		if ($name === 'raw_input_stream')
+		{
+			isset($this->_raw_input_stream) OR $this->_raw_input_stream = file_get_contents('php://input');
+			return $this->_raw_input_stream;
+		}
+		elseif ($name === 'ip_address')
+		{
+			return $this->ip_address;
+		}
+	}
+
+}
diff --git a/system/core/Lang.php b/system/core/Lang.php
new file mode 100644
index 00000000..5cfeaf37
--- /dev/null
+++ b/system/core/Lang.php
@@ -0,0 +1,203 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Language Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Language
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/language.html
+ */
+class CI_Lang {
+
+	/**
+	 * List of translations
+	 *
+	 * @var	array
+	 */
+	public $language =	array();
+
+	/**
+	 * List of loaded language files
+	 *
+	 * @var	array
+	 */
+	public $is_loaded =	array();
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		log_message('info', 'Language Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Load a language file
+	 *
+	 * @param	mixed	$langfile	Language file name
+	 * @param	string	$idiom		Language name (english, etc.)
+	 * @param	bool	$return		Whether to return the loaded array of translations
+	 * @param 	bool	$add_suffix	Whether to add suffix to $langfile
+	 * @param 	string	$alt_path	Alternative path to look for the language file
+	 *
+	 * @return	void|string[]	Array containing translations, if $return is set to TRUE
+	 */
+	public function load($langfile, $idiom = '', $return = FALSE, $add_suffix = TRUE, $alt_path = '')
+	{
+		if (is_array($langfile))
+		{
+			foreach ($langfile as $value)
+			{
+				$this->load($value, $idiom, $return, $add_suffix, $alt_path);
+			}
+
+			return;
+		}
+
+		$langfile = str_replace('.php', '', $langfile);
+
+		if ($add_suffix === TRUE)
+		{
+			$langfile = preg_replace('/_lang$/', '', $langfile).'_lang';
+		}
+
+		$langfile .= '.php';
+
+		if (empty($idiom) OR ! preg_match('/^[a-z_-]+$/i', $idiom))
+		{
+			$config =& get_config();
+			$idiom = empty($config['language']) ? 'english' : $config['language'];
+		}
+
+		if ($return === FALSE && isset($this->is_loaded[$langfile]) && $this->is_loaded[$langfile] === $idiom)
+		{
+			return;
+		}
+
+		// Load the base file, so any others found can override it
+		$basepath = BASEPATH.'language/'.$idiom.'/'.$langfile;
+		if (($found = file_exists($basepath)) === TRUE)
+		{
+			include($basepath);
+		}
+
+		// Do we have an alternative path to look in?
+		if ($alt_path !== '')
+		{
+			$alt_path .= 'language/'.$idiom.'/'.$langfile;
+			if (file_exists($alt_path))
+			{
+				include($alt_path);
+				$found = TRUE;
+			}
+		}
+		else
+		{
+			foreach (get_instance()->load->get_package_paths(TRUE) as $package_path)
+			{
+				$package_path .= 'language/'.$idiom.'/'.$langfile;
+				if ($basepath !== $package_path && file_exists($package_path))
+				{
+					include($package_path);
+					$found = TRUE;
+					break;
+				}
+			}
+		}
+
+		if ($found !== TRUE)
+		{
+			show_error('Unable to load the requested language file: language/'.$idiom.'/'.$langfile);
+		}
+
+		if ( ! isset($lang) OR ! is_array($lang))
+		{
+			log_message('error', 'Language file contains no data: language/'.$idiom.'/'.$langfile);
+
+			if ($return === TRUE)
+			{
+				return array();
+			}
+			return;
+		}
+
+		if ($return === TRUE)
+		{
+			return $lang;
+		}
+
+		$this->is_loaded[$langfile] = $idiom;
+		$this->language = array_merge($this->language, $lang);
+
+		log_message('info', 'Language file loaded: language/'.$idiom.'/'.$langfile);
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Language line
+	 *
+	 * Fetches a single line of text from the language array
+	 *
+	 * @param	string	$line		Language line key
+	 * @param	bool	$log_errors	Whether to log an error message if the line is not found
+	 * @return	string	Translation
+	 */
+	public function line($line, $log_errors = TRUE)
+	{
+		$value = isset($this->language[$line]) ? $this->language[$line] : FALSE;
+
+		// Because killer robots like unicorns!
+		if ($value === FALSE && $log_errors === TRUE)
+		{
+			log_message('error', 'Could not find the language line "'.$line.'"');
+		}
+
+		return $value;
+	}
+
+}
diff --git a/system/core/Loader.php b/system/core/Loader.php
new file mode 100644
index 00000000..d9a1539a
--- /dev/null
+++ b/system/core/Loader.php
@@ -0,0 +1,1405 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Loader Class
+ *
+ * Loads framework components.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Loader
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/loader.html
+ */
+class CI_Loader {
+
+	// All these are set automatically. Don't mess with them.
+	/**
+	 * Nesting level of the output buffering mechanism
+	 *
+	 * @var	int
+	 */
+	protected $_ci_ob_level;
+
+	/**
+	 * List of paths to load views from
+	 *
+	 * @var	array
+	 */
+	protected $_ci_view_paths =	array(VIEWPATH	=> TRUE);
+
+	/**
+	 * List of paths to load libraries from
+	 *
+	 * @var	array
+	 */
+	protected $_ci_library_paths =	array(APPPATH, BASEPATH);
+
+	/**
+	 * List of paths to load models from
+	 *
+	 * @var	array
+	 */
+	protected $_ci_model_paths =	array(APPPATH);
+
+	/**
+	 * List of paths to load helpers from
+	 *
+	 * @var	array
+	 */
+	protected $_ci_helper_paths =	array(APPPATH, BASEPATH);
+
+	/**
+	 * List of cached variables
+	 *
+	 * @var	array
+	 */
+	protected $_ci_cached_vars =	array();
+
+	/**
+	 * List of loaded classes
+	 *
+	 * @var	array
+	 */
+	protected $_ci_classes =	array();
+
+	/**
+	 * List of loaded models
+	 *
+	 * @var	array
+	 */
+	protected $_ci_models =	array();
+
+	/**
+	 * List of loaded helpers
+	 *
+	 * @var	array
+	 */
+	protected $_ci_helpers =	array();
+
+	/**
+	 * List of class name mappings
+	 *
+	 * @var	array
+	 */
+	protected $_ci_varmap =	array(
+		'unit_test' => 'unit',
+		'user_agent' => 'agent'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Sets component load paths, gets the initial output buffering level.
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$this->_ci_ob_level = ob_get_level();
+		$this->_ci_classes =& is_loaded();
+
+		log_message('info', 'Loader Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initializer
+	 *
+	 * @todo	Figure out a way to move this to the constructor
+	 *		without breaking *package_path*() methods.
+	 * @uses	CI_Loader::_ci_autoloader()
+	 * @used-by	CI_Controller::__construct()
+	 * @return	void
+	 */
+	public function initialize()
+	{
+		$this->_ci_autoloader();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is Loaded
+	 *
+	 * A utility method to test if a class is in the self::$_ci_classes array.
+	 *
+	 * @used-by	Mainly used by Form Helper function _get_validation_object().
+	 *
+	 * @param 	string		$class	Class name to check for
+	 * @return 	string|bool	Class object name if loaded or FALSE
+	 */
+	public function is_loaded($class)
+	{
+		return array_search(ucfirst($class), $this->_ci_classes, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Library Loader
+	 *
+	 * Loads and instantiates libraries.
+	 * Designed to be called from application controllers.
+	 *
+	 * @param	mixed	$library	Library name
+	 * @param	array	$params		Optional parameters to pass to the library class constructor
+	 * @param	string	$object_name	An optional object name to assign to
+	 * @return	object
+	 */
+	public function library($library, $params = NULL, $object_name = NULL)
+	{
+		if (empty($library))
+		{
+			return $this;
+		}
+		elseif (is_array($library))
+		{
+			foreach ($library as $key => $value)
+			{
+				if (is_int($key))
+				{
+					$this->library($value, $params);
+				}
+				else
+				{
+					$this->library($key, $params, $value);
+				}
+			}
+
+			return $this;
+		}
+
+		if ($params !== NULL && ! is_array($params))
+		{
+			$params = NULL;
+		}
+
+		$this->_ci_load_library($library, $params, $object_name);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Model Loader
+	 *
+	 * Loads and instantiates models.
+	 *
+	 * @param	mixed	$model		Model name
+	 * @param	string	$name		An optional object name to assign to
+	 * @param	bool	$db_conn	An optional database connection configuration to initialize
+	 * @return	object
+	 */
+	public function model($model, $name = '', $db_conn = FALSE)
+	{
+		if (empty($model))
+		{
+			return $this;
+		}
+		elseif (is_array($model))
+		{
+			foreach ($model as $key => $value)
+			{
+				is_int($key) ? $this->model($value, '', $db_conn) : $this->model($key, $value, $db_conn);
+			}
+
+			return $this;
+		}
+
+		$path = '';
+
+		// Is the model in a sub-folder? If so, parse out the filename and path.
+		if (($last_slash = strrpos($model, '/')) !== FALSE)
+		{
+			// The path is in front of the last slash
+			$path = substr($model, 0, ++$last_slash);
+
+			// And the model name behind it
+			$model = substr($model, $last_slash);
+		}
+
+		if (empty($name))
+		{
+			$name = $model;
+		}
+
+		if (in_array($name, $this->_ci_models, TRUE))
+		{
+			return $this;
+		}
+
+		$CI =& get_instance();
+		if (isset($CI->$name))
+		{
+			throw new RuntimeException('The model name you are loading is the name of a resource that is already being used: '.$name);
+		}
+
+		if ($db_conn !== FALSE && ! class_exists('CI_DB', FALSE))
+		{
+			if ($db_conn === TRUE)
+			{
+				$db_conn = '';
+			}
+
+			$this->database($db_conn, FALSE, TRUE);
+		}
+
+		// Note: All of the code under this condition used to be just:
+		//
+		//       load_class('Model', 'core');
+		//
+		//       However, load_class() instantiates classes
+		//       to cache them for later use and that prevents
+		//       MY_Model from being an abstract class and is
+		//       sub-optimal otherwise anyway.
+		if ( ! class_exists('CI_Model', FALSE))
+		{
+			$app_path = APPPATH.'core'.DIRECTORY_SEPARATOR;
+			if (file_exists($app_path.'Model.php'))
+			{
+				require_once($app_path.'Model.php');
+				if ( ! class_exists('CI_Model', FALSE))
+				{
+					throw new RuntimeException($app_path."Model.php exists, but doesn't declare class CI_Model");
+				}
+
+				log_message('info', 'CI_Model class loaded');
+			}
+			elseif ( ! class_exists('CI_Model', FALSE))
+			{
+				require_once(BASEPATH.'core'.DIRECTORY_SEPARATOR.'Model.php');
+			}
+
+			$class = config_item('subclass_prefix').'Model';
+			if (file_exists($app_path.$class.'.php'))
+			{
+				require_once($app_path.$class.'.php');
+				if ( ! class_exists($class, FALSE))
+				{
+					throw new RuntimeException($app_path.$class.".php exists, but doesn't declare class ".$class);
+				}
+
+				log_message('info', config_item('subclass_prefix').'Model class loaded');
+			}
+		}
+
+		$model = ucfirst($model);
+		if ( ! class_exists($model, FALSE))
+		{
+			foreach ($this->_ci_model_paths as $mod_path)
+			{
+				if ( ! file_exists($mod_path.'models/'.$path.$model.'.php'))
+				{
+					continue;
+				}
+
+				require_once($mod_path.'models/'.$path.$model.'.php');
+				if ( ! class_exists($model, FALSE))
+				{
+					throw new RuntimeException($mod_path."models/".$path.$model.".php exists, but doesn't declare class ".$model);
+				}
+
+				break;
+			}
+
+			if ( ! class_exists($model, FALSE))
+			{
+				throw new RuntimeException('Unable to locate the model you have specified: '.$model);
+			}
+		}
+
+		if ( ! is_subclass_of($model, 'CI_Model'))
+		{
+			throw new RuntimeException("Class ".$model." doesn't extend CI_Model");
+		}
+
+		$this->_ci_models[] = $name;
+		$model = new $model();
+		$CI->$name = $model;
+		log_message('info', 'Model "'.get_class($model).'" initialized');
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database Loader
+	 *
+	 * @param	mixed	$params		Database configuration options
+	 * @param	bool	$return 	Whether to return the database object
+	 * @param	bool	$query_builder	Whether to enable Query Builder
+	 *					(overrides the configuration setting)
+	 *
+	 * @return	object|bool	Database object if $return is set to TRUE,
+	 *					FALSE on failure, CI_Loader instance in any other case
+	 */
+	public function database($params = '', $return = FALSE, $query_builder = NULL)
+	{
+		// Grab the super object
+		$CI =& get_instance();
+
+		// Do we even need to load the database class?
+		if ($return === FALSE && $query_builder === NULL && isset($CI->db) && is_object($CI->db) && ! empty($CI->db->conn_id))
+		{
+			return FALSE;
+		}
+
+		require_once(BASEPATH.'database/DB.php');
+
+		if ($return === TRUE)
+		{
+			return DB($params, $query_builder);
+		}
+
+		// Initialize the db variable. Needed to prevent
+		// reference errors with some configurations
+		$CI->db = '';
+
+		// Load the DB class
+		$CI->db =& DB($params, $query_builder);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Load the Database Utilities Class
+	 *
+	 * @param	object	$db	Database object
+	 * @param	bool	$return	Whether to return the DB Utilities class object or not
+	 * @return	object
+	 */
+	public function dbutil($db = NULL, $return = FALSE)
+	{
+		$CI =& get_instance();
+
+		if ( ! is_object($db) OR ! ($db instanceof CI_DB))
+		{
+			class_exists('CI_DB', FALSE) OR $this->database();
+			$db =& $CI->db;
+		}
+
+		require_once(BASEPATH.'database/DB_utility.php');
+		require_once(BASEPATH.'database/drivers/'.$db->dbdriver.'/'.$db->dbdriver.'_utility.php');
+		$class = 'CI_DB_'.$db->dbdriver.'_utility';
+
+		if ($return === TRUE)
+		{
+			return new $class($db);
+		}
+
+		$CI->dbutil = new $class($db);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Load the Database Forge Class
+	 *
+	 * @param	object	$db	Database object
+	 * @param	bool	$return	Whether to return the DB Forge class object or not
+	 * @return	object
+	 */
+	public function dbforge($db = NULL, $return = FALSE)
+	{
+		$CI =& get_instance();
+		if ( ! is_object($db) OR ! ($db instanceof CI_DB))
+		{
+			class_exists('CI_DB', FALSE) OR $this->database();
+			$db =& $CI->db;
+		}
+
+		require_once(BASEPATH.'database/DB_forge.php');
+		require_once(BASEPATH.'database/drivers/'.$db->dbdriver.'/'.$db->dbdriver.'_forge.php');
+
+		if ( ! empty($db->subdriver))
+		{
+			$driver_path = BASEPATH.'database/drivers/'.$db->dbdriver.'/subdrivers/'.$db->dbdriver.'_'.$db->subdriver.'_forge.php';
+			if (file_exists($driver_path))
+			{
+				require_once($driver_path);
+				$class = 'CI_DB_'.$db->dbdriver.'_'.$db->subdriver.'_forge';
+			}
+		}
+		else
+		{
+			$class = 'CI_DB_'.$db->dbdriver.'_forge';
+		}
+
+		if ($return === TRUE)
+		{
+			return new $class($db);
+		}
+
+		$CI->dbforge = new $class($db);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * View Loader
+	 *
+	 * Loads "view" files.
+	 *
+	 * @param	string	$view	View name
+	 * @param	array	$vars	An associative array of data
+	 *				to be extracted for use in the view
+	 * @param	bool	$return	Whether to return the view output
+	 *				or leave it to the Output class
+	 * @return	object|string
+	 */
+	public function view($view, $vars = array(), $return = FALSE)
+	{
+		return $this->_ci_load(array('_ci_view' => $view, '_ci_vars' => $this->_ci_prepare_view_vars($vars), '_ci_return' => $return));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generic File Loader
+	 *
+	 * @param	string	$path	File path
+	 * @param	bool	$return	Whether to return the file output
+	 * @return	object|string
+	 */
+	public function file($path, $return = FALSE)
+	{
+		return $this->_ci_load(array('_ci_path' => $path, '_ci_return' => $return));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Variables
+	 *
+	 * Once variables are set they become available within
+	 * the controller class and its "view" files.
+	 *
+	 * @param	array|object|string	$vars
+	 *					An associative array or object containing values
+	 *					to be set, or a value's name if string
+	 * @param 	string	$val	Value to set, only used if $vars is a string
+	 * @return	object
+	 */
+	public function vars($vars, $val = '')
+	{
+		$vars = is_string($vars)
+			? array($vars => $val)
+			: $this->_ci_prepare_view_vars($vars);
+
+		foreach ($vars as $key => $val)
+		{
+			$this->_ci_cached_vars[$key] = $val;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Clear Cached Variables
+	 *
+	 * Clears the cached variables.
+	 *
+	 * @return	CI_Loader
+	 */
+	public function clear_vars()
+	{
+		$this->_ci_cached_vars = array();
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Variable
+	 *
+	 * Check if a variable is set and retrieve it.
+	 *
+	 * @param	string	$key	Variable name
+	 * @return	mixed	The variable or NULL if not found
+	 */
+	public function get_var($key)
+	{
+		return isset($this->_ci_cached_vars[$key]) ? $this->_ci_cached_vars[$key] : NULL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Variables
+	 *
+	 * Retrieves all loaded variables.
+	 *
+	 * @return	array
+	 */
+	public function get_vars()
+	{
+		return $this->_ci_cached_vars;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Helper Loader
+	 *
+	 * @param	string|string[]	$helpers	Helper name(s)
+	 * @return	object
+	 */
+	public function helper($helpers = array())
+	{
+		is_array($helpers) OR $helpers = array($helpers);
+		foreach ($helpers as &$helper)
+		{
+			$filename = basename($helper);
+			$filepath = ($filename === $helper) ? '' : substr($helper, 0, strlen($helper) - strlen($filename));
+			$filename = strtolower(preg_replace('#(_helper)?(\.php)?$#i', '', $filename)).'_helper';
+			$helper   = $filepath.$filename;
+
+			if (isset($this->_ci_helpers[$helper]))
+			{
+				continue;
+			}
+
+			// Is this a helper extension request?
+			$ext_helper = config_item('subclass_prefix').$filename;
+			$ext_loaded = FALSE;
+			foreach ($this->_ci_helper_paths as $path)
+			{
+				if (file_exists($path.'helpers/'.$ext_helper.'.php'))
+				{
+					include_once($path.'helpers/'.$ext_helper.'.php');
+					$ext_loaded = TRUE;
+				}
+			}
+
+			// If we have loaded extensions - check if the base one is here
+			if ($ext_loaded === TRUE)
+			{
+				$base_helper = BASEPATH.'helpers/'.$helper.'.php';
+				if ( ! file_exists($base_helper))
+				{
+					show_error('Unable to load the requested file: helpers/'.$helper.'.php');
+				}
+
+				include_once($base_helper);
+				$this->_ci_helpers[$helper] = TRUE;
+				log_message('info', 'Helper loaded: '.$helper);
+				continue;
+			}
+
+			// No extensions found ... try loading regular helpers and/or overrides
+			foreach ($this->_ci_helper_paths as $path)
+			{
+				if (file_exists($path.'helpers/'.$helper.'.php'))
+				{
+					include_once($path.'helpers/'.$helper.'.php');
+
+					$this->_ci_helpers[$helper] = TRUE;
+					log_message('info', 'Helper loaded: '.$helper);
+					break;
+				}
+			}
+
+			// unable to load the helper
+			if ( ! isset($this->_ci_helpers[$helper]))
+			{
+				show_error('Unable to load the requested file: helpers/'.$helper.'.php');
+			}
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Load Helpers
+	 *
+	 * An alias for the helper() method in case the developer has
+	 * written the plural form of it.
+	 *
+	 * @uses	CI_Loader::helper()
+	 * @param	string|string[]	$helpers	Helper name(s)
+	 * @return	object
+	 */
+	public function helpers($helpers = array())
+	{
+		return $this->helper($helpers);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Language Loader
+	 *
+	 * Loads language files.
+	 *
+	 * @param	string|string[]	$files	List of language file names to load
+	 * @param	string		Language name
+	 * @return	object
+	 */
+	public function language($files, $lang = '')
+	{
+		get_instance()->lang->load($files, $lang);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Config Loader
+	 *
+	 * Loads a config file (an alias for CI_Config::load()).
+	 *
+	 * @uses	CI_Config::load()
+	 * @param	string	$file			Configuration file name
+	 * @param	bool	$use_sections		Whether configuration values should be loaded into their own section
+	 * @param	bool	$fail_gracefully	Whether to just return FALSE or display an error message
+	 * @return	bool	TRUE if the file was loaded correctly or FALSE on failure
+	 */
+	public function config($file, $use_sections = FALSE, $fail_gracefully = FALSE)
+	{
+		return get_instance()->config->load($file, $use_sections, $fail_gracefully);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Driver Loader
+	 *
+	 * Loads a driver library.
+	 *
+	 * @param	string|string[]	$library	Driver name(s)
+	 * @param	array		$params		Optional parameters to pass to the driver
+	 * @param	string		$object_name	An optional object name to assign to
+	 *
+	 * @return	object|bool	Object or FALSE on failure if $library is a string
+	 *				and $object_name is set. CI_Loader instance otherwise.
+	 */
+	public function driver($library, $params = NULL, $object_name = NULL)
+	{
+		if (is_array($library))
+		{
+			foreach ($library as $key => $value)
+			{
+				if (is_int($key))
+				{
+					$this->driver($value, $params);
+				}
+				else
+				{
+					$this->driver($key, $params, $value);
+				}
+			}
+
+			return $this;
+		}
+		elseif (empty($library))
+		{
+			return FALSE;
+		}
+
+		if ( ! class_exists('CI_Driver_Library', FALSE))
+		{
+			// We aren't instantiating an object here, just making the base class available
+			require BASEPATH.'libraries/Driver.php';
+		}
+
+		// We can save the loader some time since Drivers will *always* be in a subfolder,
+		// and typically identically named to the library
+		if ( ! strpos($library, '/'))
+		{
+			$library = ucfirst($library).'/'.$library;
+		}
+
+		return $this->library($library, $params, $object_name);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Package Path
+	 *
+	 * Prepends a parent path to the library, model, helper and config
+	 * path arrays.
+	 *
+	 * @see	CI_Loader::$_ci_library_paths
+	 * @see	CI_Loader::$_ci_model_paths
+	 * @see CI_Loader::$_ci_helper_paths
+	 * @see CI_Config::$_config_paths
+	 *
+	 * @param	string	$path		Path to add
+	 * @param 	bool	$view_cascade	(default: TRUE)
+	 * @return	object
+	 */
+	public function add_package_path($path, $view_cascade = TRUE)
+	{
+		$path = rtrim($path, '/').'/';
+
+		array_unshift($this->_ci_library_paths, $path);
+		array_unshift($this->_ci_model_paths, $path);
+		array_unshift($this->_ci_helper_paths, $path);
+
+		$this->_ci_view_paths = array($path.'views/' => $view_cascade) + $this->_ci_view_paths;
+
+		// Add config file path
+		$config =& $this->_ci_get_component('config');
+		$config->_config_paths[] = $path;
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Package Paths
+	 *
+	 * Return a list of all package paths.
+	 *
+	 * @param	bool	$include_base	Whether to include BASEPATH (default: FALSE)
+	 * @return	array
+	 */
+	public function get_package_paths($include_base = FALSE)
+	{
+		return ($include_base === TRUE) ? $this->_ci_library_paths : $this->_ci_model_paths;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Remove Package Path
+	 *
+	 * Remove a path from the library, model, helper and/or config
+	 * path arrays if it exists. If no path is provided, the most recently
+	 * added path will be removed removed.
+	 *
+	 * @param	string	$path	Path to remove
+	 * @return	object
+	 */
+	public function remove_package_path($path = '')
+	{
+		$config =& $this->_ci_get_component('config');
+
+		if ($path === '')
+		{
+			array_shift($this->_ci_library_paths);
+			array_shift($this->_ci_model_paths);
+			array_shift($this->_ci_helper_paths);
+			array_shift($this->_ci_view_paths);
+			array_pop($config->_config_paths);
+		}
+		else
+		{
+			$path = rtrim($path, '/').'/';
+			foreach (array('_ci_library_paths', '_ci_model_paths', '_ci_helper_paths') as $var)
+			{
+				if (($key = array_search($path, $this->{$var})) !== FALSE)
+				{
+					unset($this->{$var}[$key]);
+				}
+			}
+
+			if (isset($this->_ci_view_paths[$path.'views/']))
+			{
+				unset($this->_ci_view_paths[$path.'views/']);
+			}
+
+			if (($key = array_search($path, $config->_config_paths)) !== FALSE)
+			{
+				unset($config->_config_paths[$key]);
+			}
+		}
+
+		// make sure the application default paths are still in the array
+		$this->_ci_library_paths = array_unique(array_merge($this->_ci_library_paths, array(APPPATH, BASEPATH)));
+		$this->_ci_helper_paths = array_unique(array_merge($this->_ci_helper_paths, array(APPPATH, BASEPATH)));
+		$this->_ci_model_paths = array_unique(array_merge($this->_ci_model_paths, array(APPPATH)));
+		$this->_ci_view_paths = array_merge($this->_ci_view_paths, array(APPPATH.'views/' => TRUE));
+		$config->_config_paths = array_unique(array_merge($config->_config_paths, array(APPPATH)));
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal CI Data Loader
+	 *
+	 * Used to load views and files.
+	 *
+	 * Variables are prefixed with _ci_ to avoid symbol collision with
+	 * variables made available to view files.
+	 *
+	 * @used-by	CI_Loader::view()
+	 * @used-by	CI_Loader::file()
+	 * @param	array	$_ci_data	Data to load
+	 * @return	object
+	 */
+	protected function _ci_load($_ci_data)
+	{
+		// Set the default data variables
+		foreach (array('_ci_view', '_ci_vars', '_ci_path', '_ci_return') as $_ci_val)
+		{
+			$$_ci_val = isset($_ci_data[$_ci_val]) ? $_ci_data[$_ci_val] : FALSE;
+		}
+
+		$file_exists = FALSE;
+
+		// Set the path to the requested file
+		if (is_string($_ci_path) && $_ci_path !== '')
+		{
+			$_ci_x = explode('/', $_ci_path);
+			$_ci_file = end($_ci_x);
+		}
+		else
+		{
+			$_ci_ext = pathinfo($_ci_view, PATHINFO_EXTENSION);
+			$_ci_file = ($_ci_ext === '') ? $_ci_view.'.php' : $_ci_view;
+
+			foreach ($this->_ci_view_paths as $_ci_view_file => $cascade)
+			{
+				if (file_exists($_ci_view_file.$_ci_file))
+				{
+					$_ci_path = $_ci_view_file.$_ci_file;
+					$file_exists = TRUE;
+					break;
+				}
+
+				if ( ! $cascade)
+				{
+					break;
+				}
+			}
+		}
+
+		if ( ! $file_exists && ! file_exists($_ci_path))
+		{
+			show_error('Unable to load the requested file: '.$_ci_file);
+		}
+
+		// This allows anything loaded using $this->load (views, files, etc.)
+		// to become accessible from within the Controller and Model functions.
+		$_ci_CI =& get_instance();
+		foreach (get_object_vars($_ci_CI) as $_ci_key => $_ci_var)
+		{
+			if ( ! isset($this->$_ci_key))
+			{
+				$this->$_ci_key =& $_ci_CI->$_ci_key;
+			}
+		}
+
+		/*
+		 * Extract and cache variables
+		 *
+		 * You can either set variables using the dedicated $this->load->vars()
+		 * function or via the second parameter of this function. We'll merge
+		 * the two types and cache them so that views that are embedded within
+		 * other views can have access to these variables.
+		 */
+		empty($_ci_vars) OR $this->_ci_cached_vars = array_merge($this->_ci_cached_vars, $_ci_vars);
+		extract($this->_ci_cached_vars);
+
+		/**
+		 * Buffer the output
+		 *
+		 * We buffer the output for two reasons:
+		 * 1. Speed. You get a significant speed boost.
+		 * 2. So that the final rendered template can be post-processed by
+		 *	the output class. Why do we need post processing? For one thing,
+		 *	in order to show the elapsed page load time. Unless we can
+		 *	intercept the content right before it's sent to the browser and
+		 *	then stop the timer it won't be accurate.
+		 */
+		ob_start();
+
+		include($_ci_path); // include() vs include_once() allows for multiple views with the same name
+		log_message('info', 'File loaded: '.$_ci_path);
+
+		// Return the file data if requested
+		if ($_ci_return === TRUE)
+		{
+			$buffer = ob_get_contents();
+			@ob_end_clean();
+			return $buffer;
+		}
+
+		/*
+		 * Flush the buffer... or buff the flusher?
+		 *
+		 * In order to permit views to be nested within
+		 * other views, we need to flush the content back out whenever
+		 * we are beyond the first level of output buffering so that
+		 * it can be seen and included properly by the first included
+		 * template and any subsequent ones. Oy!
+		 */
+		if (ob_get_level() > $this->_ci_ob_level + 1)
+		{
+			ob_end_flush();
+		}
+		else
+		{
+			$_ci_CI->output->append_output(ob_get_contents());
+			@ob_end_clean();
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal CI Library Loader
+	 *
+	 * @used-by	CI_Loader::library()
+	 * @uses	CI_Loader::_ci_init_library()
+	 *
+	 * @param	string	$class		Class name to load
+	 * @param	mixed	$params		Optional parameters to pass to the class constructor
+	 * @param	string	$object_name	Optional object name to assign to
+	 * @return	void
+	 */
+	protected function _ci_load_library($class, $params = NULL, $object_name = NULL)
+	{
+		// Get the class name, and while we're at it trim any slashes.
+		// The directory path can be included as part of the class name,
+		// but we don't want a leading slash
+		$class = str_replace('.php', '', trim($class, '/'));
+
+		// Was the path included with the class name?
+		// We look for a slash to determine this
+		if (($last_slash = strrpos($class, '/')) !== FALSE)
+		{
+			// Extract the path
+			$subdir = substr($class, 0, ++$last_slash);
+
+			// Get the filename from the path
+			$class = substr($class, $last_slash);
+		}
+		else
+		{
+			$subdir = '';
+		}
+
+		$class = ucfirst($class);
+
+		// Is this a stock library? There are a few special conditions if so ...
+		if (file_exists(BASEPATH.'libraries/'.$subdir.$class.'.php'))
+		{
+			return $this->_ci_load_stock_library($class, $subdir, $params, $object_name);
+		}
+
+		// Safety: Was the class already loaded by a previous call?
+		if (class_exists($class, FALSE))
+		{
+			$property = $object_name;
+			if (empty($property))
+			{
+				$property = strtolower($class);
+				isset($this->_ci_varmap[$property]) && $property = $this->_ci_varmap[$property];
+			}
+
+			$CI =& get_instance();
+			if (isset($CI->$property))
+			{
+				log_message('debug', $class.' class already loaded. Second attempt ignored.');
+				return;
+			}
+
+			return $this->_ci_init_library($class, '', $params, $object_name);
+		}
+
+		// Let's search for the requested library file and load it.
+		foreach ($this->_ci_library_paths as $path)
+		{
+			// BASEPATH has already been checked for
+			if ($path === BASEPATH)
+			{
+				continue;
+			}
+
+			$filepath = $path.'libraries/'.$subdir.$class.'.php';
+			// Does the file exist? No? Bummer...
+			if ( ! file_exists($filepath))
+			{
+				continue;
+			}
+
+			include_once($filepath);
+			return $this->_ci_init_library($class, '', $params, $object_name);
+		}
+
+		// One last attempt. Maybe the library is in a subdirectory, but it wasn't specified?
+		if ($subdir === '')
+		{
+			return $this->_ci_load_library($class.'/'.$class, $params, $object_name);
+		}
+
+		// If we got this far we were unable to find the requested class.
+		log_message('error', 'Unable to load the requested class: '.$class);
+		show_error('Unable to load the requested class: '.$class);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal CI Stock Library Loader
+	 *
+	 * @used-by	CI_Loader::_ci_load_library()
+	 * @uses	CI_Loader::_ci_init_library()
+	 *
+	 * @param	string	$library_name	Library name to load
+	 * @param	string	$file_path	Path to the library filename, relative to libraries/
+	 * @param	mixed	$params		Optional parameters to pass to the class constructor
+	 * @param	string	$object_name	Optional object name to assign to
+	 * @return	void
+	 */
+	protected function _ci_load_stock_library($library_name, $file_path, $params, $object_name)
+	{
+		$prefix = 'CI_';
+
+		if (class_exists($prefix.$library_name, FALSE))
+		{
+			if (class_exists(config_item('subclass_prefix').$library_name, FALSE))
+			{
+				$prefix = config_item('subclass_prefix');
+			}
+
+			$property = $object_name;
+			if (empty($property))
+			{
+				$property = strtolower($library_name);
+				isset($this->_ci_varmap[$property]) && $property = $this->_ci_varmap[$property];
+			}
+
+			$CI =& get_instance();
+			if ( ! isset($CI->$property))
+			{
+				return $this->_ci_init_library($library_name, $prefix, $params, $object_name);
+			}
+
+			log_message('debug', $library_name.' class already loaded. Second attempt ignored.');
+			return;
+		}
+
+		$paths = $this->_ci_library_paths;
+		array_pop($paths); // BASEPATH
+		array_pop($paths); // APPPATH (needs to be the first path checked)
+		array_unshift($paths, APPPATH);
+
+		foreach ($paths as $path)
+		{
+			if (file_exists($path = $path.'libraries/'.$file_path.$library_name.'.php'))
+			{
+				// Override
+				include_once($path);
+				if (class_exists($prefix.$library_name, FALSE))
+				{
+					return $this->_ci_init_library($library_name, $prefix, $params, $object_name);
+				}
+
+				log_message('debug', $path.' exists, but does not declare '.$prefix.$library_name);
+			}
+		}
+
+		include_once(BASEPATH.'libraries/'.$file_path.$library_name.'.php');
+
+		// Check for extensions
+		$subclass = config_item('subclass_prefix').$library_name;
+		foreach ($paths as $path)
+		{
+			if (file_exists($path = $path.'libraries/'.$file_path.$subclass.'.php'))
+			{
+				include_once($path);
+				if (class_exists($subclass, FALSE))
+				{
+					$prefix = config_item('subclass_prefix');
+					break;
+				}
+
+				log_message('debug', $path.' exists, but does not declare '.$subclass);
+			}
+		}
+
+		return $this->_ci_init_library($library_name, $prefix, $params, $object_name);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal CI Library Instantiator
+	 *
+	 * @used-by	CI_Loader::_ci_load_stock_library()
+	 * @used-by	CI_Loader::_ci_load_library()
+	 *
+	 * @param	string		$class		Class name
+	 * @param	string		$prefix		Class name prefix
+	 * @param	array|null|bool	$config		Optional configuration to pass to the class constructor:
+	 *						FALSE to skip;
+	 *						NULL to search in config paths;
+	 *						array containing configuration data
+	 * @param	string		$object_name	Optional object name to assign to
+	 * @return	void
+	 */
+	protected function _ci_init_library($class, $prefix, $config = FALSE, $object_name = NULL)
+	{
+		// Is there an associated config file for this class? Note: these should always be lowercase
+		if ($config === NULL)
+		{
+			// Fetch the config paths containing any package paths
+			$config_component = $this->_ci_get_component('config');
+
+			if (is_array($config_component->_config_paths))
+			{
+				$found = FALSE;
+				foreach ($config_component->_config_paths as $path)
+				{
+					// We test for both uppercase and lowercase, for servers that
+					// are case-sensitive with regard to file names. Load global first,
+					// override with environment next
+					if (file_exists($path.'config/'.strtolower($class).'.php'))
+					{
+						include($path.'config/'.strtolower($class).'.php');
+						$found = TRUE;
+					}
+					elseif (file_exists($path.'config/'.ucfirst(strtolower($class)).'.php'))
+					{
+						include($path.'config/'.ucfirst(strtolower($class)).'.php');
+						$found = TRUE;
+					}
+
+					if (file_exists($path.'config/'.ENVIRONMENT.'/'.strtolower($class).'.php'))
+					{
+						include($path.'config/'.ENVIRONMENT.'/'.strtolower($class).'.php');
+						$found = TRUE;
+					}
+					elseif (file_exists($path.'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php'))
+					{
+						include($path.'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php');
+						$found = TRUE;
+					}
+
+					// Break on the first found configuration, thus package
+					// files are not overridden by default paths
+					if ($found === TRUE)
+					{
+						break;
+					}
+				}
+			}
+		}
+
+		$class_name = $prefix.$class;
+
+		// Is the class name valid?
+		if ( ! class_exists($class_name, FALSE))
+		{
+			log_message('error', 'Non-existent class: '.$class_name);
+			show_error('Non-existent class: '.$class_name);
+		}
+
+		// Set the variable name we will assign the class to
+		// Was a custom class name supplied? If so we'll use it
+		if (empty($object_name))
+		{
+			$object_name = strtolower($class);
+			if (isset($this->_ci_varmap[$object_name]))
+			{
+				$object_name = $this->_ci_varmap[$object_name];
+			}
+		}
+
+		// Don't overwrite existing properties
+		$CI =& get_instance();
+		if (isset($CI->$object_name))
+		{
+			if ($CI->$object_name instanceof $class_name)
+			{
+				log_message('debug', $class_name." has already been instantiated as '".$object_name."'. Second attempt aborted.");
+				return;
+			}
+
+			show_error("Resource '".$object_name."' already exists and is not a ".$class_name." instance.");
+		}
+
+		// Save the class name and object name
+		$this->_ci_classes[$object_name] = $class;
+
+		// Instantiate the class
+		$CI->$object_name = isset($config)
+			? new $class_name($config)
+			: new $class_name();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CI Autoloader
+	 *
+	 * Loads component listed in the config/autoload.php file.
+	 *
+	 * @used-by	CI_Loader::initialize()
+	 * @return	void
+	 */
+	protected function _ci_autoloader()
+	{
+		if (file_exists(APPPATH.'config/autoload.php'))
+		{
+			include(APPPATH.'config/autoload.php');
+		}
+
+		if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/autoload.php'))
+		{
+			include(APPPATH.'config/'.ENVIRONMENT.'/autoload.php');
+		}
+
+		if ( ! isset($autoload))
+		{
+			return;
+		}
+
+		// Autoload packages
+		if (isset($autoload['packages']))
+		{
+			foreach ($autoload['packages'] as $package_path)
+			{
+				$this->add_package_path($package_path);
+			}
+		}
+
+		// Load any custom config file
+		if (count($autoload['config']) > 0)
+		{
+			foreach ($autoload['config'] as $val)
+			{
+				$this->config($val);
+			}
+		}
+
+		// Autoload helpers and languages
+		foreach (array('helper', 'language') as $type)
+		{
+			if (isset($autoload[$type]) && count($autoload[$type]) > 0)
+			{
+				$this->$type($autoload[$type]);
+			}
+		}
+
+		// Autoload drivers
+		if (isset($autoload['drivers']))
+		{
+			$this->driver($autoload['drivers']);
+		}
+
+		// Load libraries
+		if (isset($autoload['libraries']) && count($autoload['libraries']) > 0)
+		{
+			// Load the database driver.
+			if (in_array('database', $autoload['libraries']))
+			{
+				$this->database();
+				$autoload['libraries'] = array_diff($autoload['libraries'], array('database'));
+			}
+
+			// Load all other libraries
+			$this->library($autoload['libraries']);
+		}
+
+		// Autoload models
+		if (isset($autoload['model']))
+		{
+			$this->model($autoload['model']);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prepare variables for _ci_vars, to be later extract()-ed inside views
+	 *
+	 * Converts objects to associative arrays and filters-out internal
+	 * variable names (i.e. keys prefixed with '_ci_').
+	 *
+	 * @param	mixed	$vars
+	 * @return	array
+	 */
+	protected function _ci_prepare_view_vars($vars)
+	{
+		if ( ! is_array($vars))
+		{
+			$vars = is_object($vars)
+				? get_object_vars($vars)
+				: array();
+		}
+
+		foreach (array_keys($vars) as $key)
+		{
+			if (strncmp($key, '_ci_', 4) === 0)
+			{
+				unset($vars[$key]);
+			}
+		}
+
+		return $vars;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CI Component getter
+	 *
+	 * Get a reference to a specific library or model.
+	 *
+	 * @param 	string	$component	Component name
+	 * @return	bool
+	 */
+	protected function &_ci_get_component($component)
+	{
+		$CI =& get_instance();
+		return $CI->$component;
+	}
+}
diff --git a/system/core/Log.php b/system/core/Log.php
new file mode 100644
index 00000000..36634c15
--- /dev/null
+++ b/system/core/Log.php
@@ -0,0 +1,295 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Logging Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Logging
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/general/errors.html
+ */
+class CI_Log {
+
+	/**
+	 * Path to save log files
+	 *
+	 * @var string
+	 */
+	protected $_log_path;
+
+	/**
+	 * File permissions
+	 *
+	 * @var	int
+	 */
+	protected $_file_permissions = 0644;
+
+	/**
+	 * Level of logging
+	 *
+	 * @var int
+	 */
+	protected $_threshold = 1;
+
+	/**
+	 * Array of threshold levels to log
+	 *
+	 * @var array
+	 */
+	protected $_threshold_array = array();
+
+	/**
+	 * Format of timestamp for log files
+	 *
+	 * @var string
+	 */
+	protected $_date_fmt = 'Y-m-d H:i:s';
+
+	/**
+	 * Filename extension
+	 *
+	 * @var	string
+	 */
+	protected $_file_ext;
+
+	/**
+	 * Whether or not the logger can write to the log files
+	 *
+	 * @var bool
+	 */
+	protected $_enabled = TRUE;
+
+	/**
+	 * Predefined logging levels
+	 *
+	 * @var array
+	 */
+	protected $_levels = array('ERROR' => 1, 'DEBUG' => 2, 'INFO' => 3, 'ALL' => 4);
+
+	/**
+	 * mbstring.func_overload flag
+	 *
+	 * @var	bool
+	 */
+	protected static $func_overload;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$config =& get_config();
+
+		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+
+		$this->_log_path = ($config['log_path'] !== '')
+			? rtrim($config['log_path'], '/\\').DIRECTORY_SEPARATOR : APPPATH.'logs'.DIRECTORY_SEPARATOR;
+
+		$this->_file_ext = (isset($config['log_file_extension']) && $config['log_file_extension'] !== '')
+			? ltrim($config['log_file_extension'], '.') : 'php';
+
+		file_exists($this->_log_path) OR mkdir($this->_log_path, 0755, TRUE);
+
+		if ( ! is_dir($this->_log_path) OR ! is_really_writable($this->_log_path))
+		{
+			$this->_enabled = FALSE;
+		}
+
+		if (is_numeric($config['log_threshold']))
+		{
+			$this->_threshold = (int) $config['log_threshold'];
+		}
+		elseif (is_array($config['log_threshold']))
+		{
+			$this->_threshold = 0;
+			$this->_threshold_array = array_flip($config['log_threshold']);
+		}
+
+		if ( ! empty($config['log_date_format']))
+		{
+			$this->_date_fmt = $config['log_date_format'];
+		}
+
+		if ( ! empty($config['log_file_permissions']) && is_int($config['log_file_permissions']))
+		{
+			$this->_file_permissions = $config['log_file_permissions'];
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Write Log File
+	 *
+	 * Generally this function will be called using the global log_message() function
+	 *
+	 * @param	string	$level 	The error level: 'error', 'debug' or 'info'
+	 * @param	string	$msg 	The error message
+	 * @return	bool
+	 */
+	public function write_log($level, $msg)
+	{
+		if ($this->_enabled === FALSE)
+		{
+			return FALSE;
+		}
+
+		$level = strtoupper($level);
+
+		if (( ! isset($this->_levels[$level]) OR ($this->_levels[$level] > $this->_threshold))
+			&& ! isset($this->_threshold_array[$this->_levels[$level]]))
+		{
+			return FALSE;
+		}
+
+		$filepath = $this->_log_path.'log-'.date('Y-m-d').'.'.$this->_file_ext;
+		$message = '';
+
+		if ( ! file_exists($filepath))
+		{
+			$newfile = TRUE;
+			// Only add protection to php files
+			if ($this->_file_ext === 'php')
+			{
+				$message .= "<?php defined('BASEPATH') OR exit('No direct script access allowed'); ?>\n\n";
+			}
+		}
+
+		if ( ! $fp = @fopen($filepath, 'ab'))
+		{
+			return FALSE;
+		}
+
+		flock($fp, LOCK_EX);
+
+		// Instantiating DateTime with microseconds appended to initial date is needed for proper support of this format
+		if (strpos($this->_date_fmt, 'u') !== FALSE)
+		{
+			$microtime_full = microtime(TRUE);
+			$microtime_short = sprintf("%06d", ($microtime_full - floor($microtime_full)) * 1000000);
+			$date = new DateTime(date('Y-m-d H:i:s.'.$microtime_short, $microtime_full));
+			$date = $date->format($this->_date_fmt);
+		}
+		else
+		{
+			$date = date($this->_date_fmt);
+		}
+
+		$message .= $this->_format_line($level, $date, $msg);
+
+		for ($written = 0, $length = self::strlen($message); $written < $length; $written += $result)
+		{
+			if (($result = fwrite($fp, self::substr($message, $written))) === FALSE)
+			{
+				break;
+			}
+		}
+
+		flock($fp, LOCK_UN);
+		fclose($fp);
+
+		if (isset($newfile) && $newfile === TRUE)
+		{
+			chmod($filepath, $this->_file_permissions);
+		}
+
+		return is_int($result);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Format the log line.
+	 *
+	 * This is for extensibility of log formatting
+	 * If you want to change the log format, extend the CI_Log class and override this method
+	 *
+	 * @param	string	$level 	The error level
+	 * @param	string	$date 	Formatted date string
+	 * @param	string	$message 	The log message
+	 * @return	string	Formatted log line with a new line character at the end
+	 */
+	protected function _format_line($level, $date, $message)
+	{
+		return $level.' - '.$date.' --> '.$message.PHP_EOL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return (self::$func_overload)
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe substr()
+	 *
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int	$length
+	 * @return	string
+	 */
+	protected static function substr($str, $start, $length = NULL)
+	{
+		if (self::$func_overload)
+		{
+			return mb_substr($str, $start, $length, '8bit');
+		}
+
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/core/Model.php b/system/core/Model.php
new file mode 100644
index 00000000..58514829
--- /dev/null
+++ b/system/core/Model.php
@@ -0,0 +1,68 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Model Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/config.html
+ */
+class CI_Model {
+
+	/**
+	 * __get magic
+	 *
+	 * Allows models to access CI's loaded classes using the same
+	 * syntax as controllers.
+	 *
+	 * @param	string	$key
+	 */
+	public function __get($key)
+	{
+		// Debugging note:
+		//	If you're here because you're getting an error message
+		//	saying 'Undefined Property: system/core/Model.php', it's
+		//	most likely a typo in your model code.
+		return get_instance()->$key;
+	}
+
+}
diff --git a/system/core/Output.php b/system/core/Output.php
new file mode 100644
index 00000000..c56aff4b
--- /dev/null
+++ b/system/core/Output.php
@@ -0,0 +1,839 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Output Class
+ *
+ * Responsible for sending final output to the browser.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Output
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/output.html
+ */
+class CI_Output {
+
+	/**
+	 * Final output string
+	 *
+	 * @var	string
+	 */
+	public $final_output;
+
+	/**
+	 * Cache expiration time
+	 *
+	 * @var	int
+	 */
+	public $cache_expiration = 0;
+
+	/**
+	 * List of server headers
+	 *
+	 * @var	array
+	 */
+	public $headers = array();
+
+	/**
+	 * List of mime types
+	 *
+	 * @var	array
+	 */
+	public $mimes =	array();
+
+	/**
+	 * Mime-type for the current page
+	 *
+	 * @var	string
+	 */
+	protected $mime_type = 'text/html';
+
+	/**
+	 * Enable Profiler flag
+	 *
+	 * @var	bool
+	 */
+	public $enable_profiler = FALSE;
+
+	/**
+	 * php.ini zlib.output_compression flag
+	 *
+	 * @var	bool
+	 */
+	protected $_zlib_oc = FALSE;
+
+	/**
+	 * CI output compression flag
+	 *
+	 * @var	bool
+	 */
+	protected $_compress_output = FALSE;
+
+	/**
+	 * List of profiler sections
+	 *
+	 * @var	array
+	 */
+	protected $_profiler_sections =	array();
+
+	/**
+	 * Parse markers flag
+	 *
+	 * Whether or not to parse variables like {elapsed_time} and {memory_usage}.
+	 *
+	 * @var	bool
+	 */
+	public $parse_exec_vars = TRUE;
+
+	/**
+	 * mbstring.func_overload flag
+	 *
+	 * @var	bool
+	 */
+	protected static $func_overload;
+
+	/**
+	 * Class constructor
+	 *
+	 * Determines whether zLib output compression will be used.
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$this->_zlib_oc = (bool) ini_get('zlib.output_compression');
+		$this->_compress_output = (
+			$this->_zlib_oc === FALSE
+			&& config_item('compress_output') === TRUE
+			&& extension_loaded('zlib')
+		);
+
+		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+
+		// Get mime types for later
+		$this->mimes =& get_mimes();
+
+		log_message('info', 'Output Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Output
+	 *
+	 * Returns the current output string.
+	 *
+	 * @return	string
+	 */
+	public function get_output()
+	{
+		return $this->final_output;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Output
+	 *
+	 * Sets the output string.
+	 *
+	 * @param	string	$output	Output data
+	 * @return	CI_Output
+	 */
+	public function set_output($output)
+	{
+		$this->final_output = $output;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Append Output
+	 *
+	 * Appends data onto the output string.
+	 *
+	 * @param	string	$output	Data to append
+	 * @return	CI_Output
+	 */
+	public function append_output($output)
+	{
+		$this->final_output .= $output;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Header
+	 *
+	 * Lets you set a server header which will be sent with the final output.
+	 *
+	 * Note: If a file is cached, headers will not be sent.
+	 * @todo	We need to figure out how to permit headers to be cached.
+	 *
+	 * @param	string	$header		Header
+	 * @param	bool	$replace	Whether to replace the old header value, if already set
+	 * @return	CI_Output
+	 */
+	public function set_header($header, $replace = TRUE)
+	{
+		// If zlib.output_compression is enabled it will compress the output,
+		// but it will not modify the content-length header to compensate for
+		// the reduction, causing the browser to hang waiting for more data.
+		// We'll just skip content-length in those cases.
+		if ($this->_zlib_oc && strncasecmp($header, 'content-length', 14) === 0)
+		{
+			return $this;
+		}
+
+		$this->headers[] = array($header, $replace);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Content-Type Header
+	 *
+	 * @param	string	$mime_type	Extension of the file we're outputting
+	 * @param	string	$charset	Character set (default: NULL)
+	 * @return	CI_Output
+	 */
+	public function set_content_type($mime_type, $charset = NULL)
+	{
+		if (strpos($mime_type, '/') === FALSE)
+		{
+			$extension = ltrim($mime_type, '.');
+
+			// Is this extension supported?
+			if (isset($this->mimes[$extension]))
+			{
+				$mime_type =& $this->mimes[$extension];
+
+				if (is_array($mime_type))
+				{
+					$mime_type = current($mime_type);
+				}
+			}
+		}
+
+		$this->mime_type = $mime_type;
+
+		if (empty($charset))
+		{
+			$charset = config_item('charset');
+		}
+
+		$header = 'Content-Type: '.$mime_type
+			.(empty($charset) ? '' : '; charset='.$charset);
+
+		$this->headers[] = array($header, TRUE);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Current Content-Type Header
+	 *
+	 * @return	string	'text/html', if not already set
+	 */
+	public function get_content_type()
+	{
+		for ($i = 0, $c = count($this->headers); $i < $c; $i++)
+		{
+			if (sscanf($this->headers[$i][0], 'Content-Type: %[^;]', $content_type) === 1)
+			{
+				return $content_type;
+			}
+		}
+
+		return 'text/html';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Header
+	 *
+	 * @param	string	$header
+	 * @return	string
+	 */
+	public function get_header($header)
+	{
+		// Combine headers already sent with our batched headers
+		$headers = array_merge(
+			// We only need [x][0] from our multi-dimensional array
+			array_map('array_shift', $this->headers),
+			headers_list()
+		);
+
+		if (empty($headers) OR empty($header))
+		{
+			return NULL;
+		}
+
+		// Count backwards, in order to get the last matching header
+		for ($c = count($headers) - 1; $c > -1; $c--)
+		{
+			if (strncasecmp($header, $headers[$c], $l = self::strlen($header)) === 0)
+			{
+				return trim(self::substr($headers[$c], $l+1));
+			}
+		}
+
+		return NULL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set HTTP Status Header
+	 *
+	 * As of version 1.7.2, this is an alias for common function
+	 * set_status_header().
+	 *
+	 * @param	int	$code	Status code (default: 200)
+	 * @param	string	$text	Optional message
+	 * @return	CI_Output
+	 */
+	public function set_status_header($code = 200, $text = '')
+	{
+		set_status_header($code, $text);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Enable/disable Profiler
+	 *
+	 * @param	bool	$val	TRUE to enable or FALSE to disable
+	 * @return	CI_Output
+	 */
+	public function enable_profiler($val = TRUE)
+	{
+		$this->enable_profiler = is_bool($val) ? $val : TRUE;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Profiler Sections
+	 *
+	 * Allows override of default/config settings for
+	 * Profiler section display.
+	 *
+	 * @param	array	$sections	Profiler sections
+	 * @return	CI_Output
+	 */
+	public function set_profiler_sections($sections)
+	{
+		if (isset($sections['query_toggle_count']))
+		{
+			$this->_profiler_sections['query_toggle_count'] = (int) $sections['query_toggle_count'];
+			unset($sections['query_toggle_count']);
+		}
+
+		foreach ($sections as $section => $enable)
+		{
+			$this->_profiler_sections[$section] = ($enable !== FALSE);
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Cache
+	 *
+	 * @param	int	$time	Cache expiration time in minutes
+	 * @return	CI_Output
+	 */
+	public function cache($time)
+	{
+		$this->cache_expiration = is_numeric($time) ? $time : 0;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Display Output
+	 *
+	 * Processes and sends finalized output data to the browser along
+	 * with any server headers and profile data. It also stops benchmark
+	 * timers so the page rendering speed and memory usage can be shown.
+	 *
+	 * Note: All "view" data is automatically put into $this->final_output
+	 *	 by controller class.
+	 *
+	 * @uses	CI_Output::$final_output
+	 * @param	string	$output	Output data override
+	 * @return	void
+	 */
+	public function _display($output = NULL)
+	{
+		// Note:  We use load_class() because we can't use $CI =& get_instance()
+		// since this function is sometimes called by the caching mechanism,
+		// which happens before the CI super object is available.
+		$BM =& load_class('Benchmark', 'core');
+		$CFG =& load_class('Config', 'core');
+
+		// Grab the super object if we can.
+		if (class_exists('CI_Controller', FALSE))
+		{
+			$CI =& get_instance();
+		}
+
+		// --------------------------------------------------------------------
+
+		// Set the output data
+		if ($output === NULL)
+		{
+			$output =& $this->final_output;
+		}
+
+		// --------------------------------------------------------------------
+
+		// Do we need to write a cache file? Only if the controller does not have its
+		// own _output() method and we are not dealing with a cache file, which we
+		// can determine by the existence of the $CI object above
+		if ($this->cache_expiration > 0 && isset($CI) && ! method_exists($CI, '_output'))
+		{
+			$this->_write_cache($output);
+		}
+
+		// --------------------------------------------------------------------
+
+		// Parse out the elapsed time and memory usage,
+		// then swap the pseudo-variables with the data
+
+		$elapsed = $BM->elapsed_time('total_execution_time_start', 'total_execution_time_end');
+
+		if ($this->parse_exec_vars === TRUE)
+		{
+			$memory	= round(memory_get_usage() / 1024 / 1024, 2).'MB';
+			$output = str_replace(array('{elapsed_time}', '{memory_usage}'), array($elapsed, $memory), $output);
+		}
+
+		// --------------------------------------------------------------------
+
+		// Is compression requested?
+		if (isset($CI) // This means that we're not serving a cache file, if we were, it would already be compressed
+			&& $this->_compress_output === TRUE
+			&& isset($_SERVER['HTTP_ACCEPT_ENCODING']) && strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== FALSE)
+		{
+			ob_start('ob_gzhandler');
+		}
+
+		// --------------------------------------------------------------------
+
+		// Are there any server headers to send?
+		if (count($this->headers) > 0)
+		{
+			foreach ($this->headers as $header)
+			{
+				@header($header[0], $header[1]);
+			}
+		}
+
+		// --------------------------------------------------------------------
+
+		// Does the $CI object exist?
+		// If not we know we are dealing with a cache file so we'll
+		// simply echo out the data and exit.
+		if ( ! isset($CI))
+		{
+			if ($this->_compress_output === TRUE)
+			{
+				if (isset($_SERVER['HTTP_ACCEPT_ENCODING']) && strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== FALSE)
+				{
+					header('Content-Encoding: gzip');
+					header('Content-Length: '.self::strlen($output));
+				}
+				else
+				{
+					// User agent doesn't support gzip compression,
+					// so we'll have to decompress our cache
+					$output = gzinflate(self::substr($output, 10, -8));
+				}
+			}
+
+			echo $output;
+			log_message('info', 'Final output sent to browser');
+			log_message('info', 'Total execution time: '.$elapsed);
+			return;
+		}
+
+		// --------------------------------------------------------------------
+
+		// Do we need to generate profile data?
+		// If so, load the Profile class and run it.
+		if ($this->enable_profiler === TRUE)
+		{
+			$CI->load->library('profiler');
+			if ( ! empty($this->_profiler_sections))
+			{
+				$CI->profiler->set_sections($this->_profiler_sections);
+			}
+
+			// If the output data contains closing </body> and </html> tags
+			// we will remove them and add them back after we insert the profile data
+			$output = preg_replace('|</body>.*?</html>|is', '', $output, -1, $count).$CI->profiler->run();
+			if ($count > 0)
+			{
+				$output .= '</body></html>';
+			}
+		}
+
+		// Does the controller contain a function named _output()?
+		// If so send the output there.  Otherwise, echo it.
+		if (method_exists($CI, '_output'))
+		{
+			$CI->_output($output);
+		}
+		else
+		{
+			echo $output; // Send it to the browser!
+		}
+
+		log_message('info', 'Final output sent to browser');
+		log_message('info', 'Total execution time: '.$elapsed);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Write Cache
+	 *
+	 * @param	string	$output	Output data to cache
+	 * @return	void
+	 */
+	public function _write_cache($output)
+	{
+		$CI =& get_instance();
+		$path = $CI->config->item('cache_path');
+		$cache_path = ($path === '') ? APPPATH.'cache'.DIRECTORY_SEPARATOR : rtrim($path, '/\\').DIRECTORY_SEPARATOR;
+
+		if ( ! is_dir($cache_path) OR ! is_really_writable($cache_path))
+		{
+			log_message('error', 'Unable to write cache file: '.$cache_path);
+			return;
+		}
+
+		$uri = $CI->config->item('base_url')
+			.$CI->config->slash_item('index_page')
+			.$CI->uri->uri_string();
+
+		if (($cache_query_string = $CI->config->item('cache_query_string')) && ! empty($_SERVER['QUERY_STRING']))
+		{
+			if (is_array($cache_query_string))
+			{
+				$uri .= '?'.http_build_query(array_intersect_key($_GET, array_flip($cache_query_string)));
+			}
+			else
+			{
+				$uri .= '?'.$_SERVER['QUERY_STRING'];
+			}
+		}
+
+		$cache_path .= md5($uri);
+
+		if ( ! $fp = @fopen($cache_path, 'w+b'))
+		{
+			log_message('error', 'Unable to write cache file: '.$cache_path);
+			return;
+		}
+
+		if ( ! flock($fp, LOCK_EX))
+		{
+			log_message('error', 'Unable to secure a file lock for file at: '.$cache_path);
+			fclose($fp);
+			return;
+		}
+
+		// If output compression is enabled, compress the cache
+		// itself, so that we don't have to do that each time
+		// we're serving it
+		if ($this->_compress_output === TRUE)
+		{
+			$output = gzencode($output);
+
+			if ($this->get_header('content-type') === NULL)
+			{
+				$this->set_content_type($this->mime_type);
+			}
+		}
+
+		$expire = time() + ($this->cache_expiration * 60);
+
+		// Put together our serialized info.
+		$cache_info = serialize(array(
+			'expire'	=> $expire,
+			'headers'	=> $this->headers
+		));
+
+		$output = $cache_info.'ENDCI--->'.$output;
+
+		for ($written = 0, $length = self::strlen($output); $written < $length; $written += $result)
+		{
+			if (($result = fwrite($fp, self::substr($output, $written))) === FALSE)
+			{
+				break;
+			}
+		}
+
+		flock($fp, LOCK_UN);
+		fclose($fp);
+
+		if ( ! is_int($result))
+		{
+			@unlink($cache_path);
+			log_message('error', 'Unable to write the complete cache content at: '.$cache_path);
+			return;
+		}
+
+		chmod($cache_path, 0640);
+		log_message('debug', 'Cache file written: '.$cache_path);
+
+		// Send HTTP cache-control headers to browser to match file cache settings.
+		$this->set_cache_header($_SERVER['REQUEST_TIME'], $expire);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update/serve cached output
+	 *
+	 * @uses	CI_Config
+	 * @uses	CI_URI
+	 *
+	 * @param	object	&$CFG	CI_Config class instance
+	 * @param	object	&$URI	CI_URI class instance
+	 * @return	bool	TRUE on success or FALSE on failure
+	 */
+	public function _display_cache(&$CFG, &$URI)
+	{
+		$cache_path = ($CFG->item('cache_path') === '') ? APPPATH.'cache/' : $CFG->item('cache_path');
+
+		// Build the file path. The file name is an MD5 hash of the full URI
+		$uri = $CFG->item('base_url').$CFG->slash_item('index_page').$URI->uri_string;
+
+		if (($cache_query_string = $CFG->item('cache_query_string')) && ! empty($_SERVER['QUERY_STRING']))
+		{
+			if (is_array($cache_query_string))
+			{
+				$uri .= '?'.http_build_query(array_intersect_key($_GET, array_flip($cache_query_string)));
+			}
+			else
+			{
+				$uri .= '?'.$_SERVER['QUERY_STRING'];
+			}
+		}
+
+		$filepath = $cache_path.md5($uri);
+
+		if ( ! file_exists($filepath) OR ! $fp = @fopen($filepath, 'rb'))
+		{
+			return FALSE;
+		}
+
+		flock($fp, LOCK_SH);
+
+		$cache = (filesize($filepath) > 0) ? fread($fp, filesize($filepath)) : '';
+
+		flock($fp, LOCK_UN);
+		fclose($fp);
+
+		// Look for embedded serialized file info.
+		if ( ! preg_match('/^(.*)ENDCI--->/', $cache, $match))
+		{
+			return FALSE;
+		}
+
+		$cache_info = unserialize($match[1]);
+		$expire = $cache_info['expire'];
+
+		$last_modified = filemtime($filepath);
+
+		// Has the file expired?
+		if ($_SERVER['REQUEST_TIME'] >= $expire && is_really_writable($cache_path))
+		{
+			// If so we'll delete it.
+			@unlink($filepath);
+			log_message('debug', 'Cache file has expired. File deleted.');
+			return FALSE;
+		}
+
+		// Send the HTTP cache control headers
+		$this->set_cache_header($last_modified, $expire);
+
+		// Add headers from cache file.
+		foreach ($cache_info['headers'] as $header)
+		{
+			$this->set_header($header[0], $header[1]);
+		}
+
+		// Display the cache
+		$this->_display(self::substr($cache, self::strlen($match[0])));
+		log_message('debug', 'Cache file is current. Sending it to browser.');
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete cache
+	 *
+	 * @param	string	$uri	URI string
+	 * @return	bool
+	 */
+	public function delete_cache($uri = '')
+	{
+		$CI =& get_instance();
+		$cache_path = $CI->config->item('cache_path');
+		if ($cache_path === '')
+		{
+			$cache_path = APPPATH.'cache/';
+		}
+
+		if ( ! is_dir($cache_path))
+		{
+			log_message('error', 'Unable to find cache path: '.$cache_path);
+			return FALSE;
+		}
+
+		if (empty($uri))
+		{
+			$uri = $CI->uri->uri_string();
+
+			if (($cache_query_string = $CI->config->item('cache_query_string')) && ! empty($_SERVER['QUERY_STRING']))
+			{
+				if (is_array($cache_query_string))
+				{
+					$uri .= '?'.http_build_query(array_intersect_key($_GET, array_flip($cache_query_string)));
+				}
+				else
+				{
+					$uri .= '?'.$_SERVER['QUERY_STRING'];
+				}
+			}
+		}
+
+		$cache_path .= md5($CI->config->item('base_url').$CI->config->slash_item('index_page').ltrim($uri, '/'));
+
+		if ( ! @unlink($cache_path))
+		{
+			log_message('error', 'Unable to delete cache file for '.$uri);
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Cache Header
+	 *
+	 * Set the HTTP headers to match the server-side file cache settings
+	 * in order to reduce bandwidth.
+	 *
+	 * @param	int	$last_modified	Timestamp of when the page was last modified
+	 * @param	int	$expiration	Timestamp of when should the requested page expire from cache
+	 * @return	void
+	 */
+	public function set_cache_header($last_modified, $expiration)
+	{
+		$max_age = $expiration - $_SERVER['REQUEST_TIME'];
+
+		if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && $last_modified <= strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']))
+		{
+			$this->set_status_header(304);
+			exit;
+		}
+
+		header('Pragma: public');
+		header('Cache-Control: max-age='.$max_age.', public');
+		header('Expires: '.gmdate('D, d M Y H:i:s', $expiration).' GMT');
+		header('Last-modified: '.gmdate('D, d M Y H:i:s', $last_modified).' GMT');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return (self::$func_overload)
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe substr()
+	 *
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int	$length
+	 * @return	string
+	 */
+	protected static function substr($str, $start, $length = NULL)
+	{
+		if (self::$func_overload)
+		{
+			return mb_substr($str, $start, $length, '8bit');
+		}
+
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/core/Router.php b/system/core/Router.php
new file mode 100644
index 00000000..0d966255
--- /dev/null
+++ b/system/core/Router.php
@@ -0,0 +1,472 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Router Class
+ *
+ * Parses URIs and determines routing
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/general/routing.html
+ */
+class CI_Router {
+
+	/**
+	 * CI_Config class object
+	 *
+	 * @var	object
+	 */
+	public $config;
+
+	/**
+	 * List of routes
+	 *
+	 * @var	array
+	 */
+	public $routes =	array();
+
+	/**
+	 * Current class name
+	 *
+	 * @var	string
+	 */
+	public $class =		'';
+
+	/**
+	 * Current method name
+	 *
+	 * @var	string
+	 */
+	public $method =	'index';
+
+	/**
+	 * Sub-directory that contains the requested controller class
+	 *
+	 * @var	string
+	 */
+	public $directory;
+
+	/**
+	 * Default controller (and method if specific)
+	 *
+	 * @var	string
+	 */
+	public $default_controller;
+
+	/**
+	 * Translate URI dashes
+	 *
+	 * Determines whether dashes in controller & method segments
+	 * should be automatically replaced by underscores.
+	 *
+	 * @var	bool
+	 */
+	public $translate_uri_dashes = FALSE;
+
+	/**
+	 * Enable query strings flag
+	 *
+	 * Determines whether to use GET parameters or segment URIs
+	 *
+	 * @var	bool
+	 */
+	public $enable_query_strings = FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Runs the route mapping function.
+	 *
+	 * @param	array	$routing
+	 * @return	void
+	 */
+	public function __construct($routing = NULL)
+	{
+		$this->config =& load_class('Config', 'core');
+		$this->uri =& load_class('URI', 'core');
+
+		$this->enable_query_strings = ( ! is_cli() && $this->config->item('enable_query_strings') === TRUE);
+
+		// If a directory override is configured, it has to be set before any dynamic routing logic
+		is_array($routing) && isset($routing['directory']) && $this->set_directory($routing['directory']);
+		$this->_set_routing();
+
+		// Set any routing overrides that may exist in the main index file
+		if (is_array($routing))
+		{
+			empty($routing['controller']) OR $this->set_class($routing['controller']);
+			empty($routing['function'])   OR $this->set_method($routing['function']);
+		}
+
+		log_message('info', 'Router Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set route mapping
+	 *
+	 * Determines what should be served based on the URI request,
+	 * as well as any "routes" that have been set in the routing config file.
+	 *
+	 * @return	void
+	 */
+	protected function _set_routing()
+	{
+		// Load the routes.php file. It would be great if we could
+		// skip this for enable_query_strings = TRUE, but then
+		// default_controller would be empty ...
+		if (file_exists(APPPATH.'config/routes.php'))
+		{
+			include(APPPATH.'config/routes.php');
+		}
+
+		if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/routes.php'))
+		{
+			include(APPPATH.'config/'.ENVIRONMENT.'/routes.php');
+		}
+
+		// Validate & get reserved routes
+		if (isset($route) && is_array($route))
+		{
+			isset($route['default_controller']) && $this->default_controller = $route['default_controller'];
+			isset($route['translate_uri_dashes']) && $this->translate_uri_dashes = $route['translate_uri_dashes'];
+			unset($route['default_controller'], $route['translate_uri_dashes']);
+			$this->routes = $route;
+		}
+
+		// Are query strings enabled in the config file? Normally CI doesn't utilize query strings
+		// since URI segments are more search-engine friendly, but they can optionally be used.
+		// If this feature is enabled, we will gather the directory/class/method a little differently
+		if ($this->enable_query_strings)
+		{
+			// If the directory is set at this time, it means an override exists, so skip the checks
+			if ( ! isset($this->directory))
+			{
+				$_d = $this->config->item('directory_trigger');
+				$_d = isset($_GET[$_d]) ? trim($_GET[$_d], " \t\n\r\0\x0B/") : '';
+
+				if ($_d !== '')
+				{
+					$this->uri->filter_uri($_d);
+					$this->set_directory($_d);
+				}
+			}
+
+			$_c = trim($this->config->item('controller_trigger'));
+			if ( ! empty($_GET[$_c]))
+			{
+				$this->uri->filter_uri($_GET[$_c]);
+				$this->set_class($_GET[$_c]);
+
+				$_f = trim($this->config->item('function_trigger'));
+				if ( ! empty($_GET[$_f]))
+				{
+					$this->uri->filter_uri($_GET[$_f]);
+					$this->set_method($_GET[$_f]);
+				}
+
+				$this->uri->rsegments = array(
+					1 => $this->class,
+					2 => $this->method
+				);
+			}
+			else
+			{
+				$this->_set_default_controller();
+			}
+
+			// Routing rules don't apply to query strings and we don't need to detect
+			// directories, so we're done here
+			return;
+		}
+
+		// Is there anything to parse?
+		if ($this->uri->uri_string !== '')
+		{
+			$this->_parse_routes();
+		}
+		else
+		{
+			$this->_set_default_controller();
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set request route
+	 *
+	 * Takes an array of URI segments as input and sets the class/method
+	 * to be called.
+	 *
+	 * @used-by	CI_Router::_parse_routes()
+	 * @param	array	$segments	URI segments
+	 * @return	void
+	 */
+	protected function _set_request($segments = array())
+	{
+		$segments = $this->_validate_request($segments);
+		// If we don't have any segments left - try the default controller;
+		// WARNING: Directories get shifted out of the segments array!
+		if (empty($segments))
+		{
+			$this->_set_default_controller();
+			return;
+		}
+
+		if ($this->translate_uri_dashes === TRUE)
+		{
+			$segments[0] = str_replace('-', '_', $segments[0]);
+			if (isset($segments[1]))
+			{
+				$segments[1] = str_replace('-', '_', $segments[1]);
+			}
+		}
+
+		$this->set_class($segments[0]);
+		if (isset($segments[1]))
+		{
+			$this->set_method($segments[1]);
+		}
+		else
+		{
+			$segments[1] = 'index';
+		}
+
+		array_unshift($segments, NULL);
+		unset($segments[0]);
+		$this->uri->rsegments = $segments;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set default controller
+	 *
+	 * @return	void
+	 */
+	protected function _set_default_controller()
+	{
+		if (empty($this->default_controller))
+		{
+			show_error('Unable to determine what should be displayed. A default route has not been specified in the routing file.');
+		}
+
+		// Is the method being specified?
+		if (sscanf($this->default_controller, '%[^/]/%s', $class, $method) !== 2)
+		{
+			$method = 'index';
+		}
+
+		if ( ! file_exists(APPPATH.'controllers/'.$this->directory.ucfirst($class).'.php'))
+		{
+			// This will trigger 404 later
+			return;
+		}
+
+		$this->set_class($class);
+		$this->set_method($method);
+
+		// Assign routed segments, index starting from 1
+		$this->uri->rsegments = array(
+			1 => $class,
+			2 => $method
+		);
+
+		log_message('debug', 'No URI present. Default controller set.');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate request
+	 *
+	 * Attempts validate the URI request and determine the controller path.
+	 *
+	 * @used-by	CI_Router::_set_request()
+	 * @param	array	$segments	URI segments
+	 * @return	mixed	URI segments
+	 */
+	protected function _validate_request($segments)
+	{
+		$c = count($segments);
+		$directory_override = isset($this->directory);
+
+		// Loop through our segments and return as soon as a controller
+		// is found or when such a directory doesn't exist
+		while ($c-- > 0)
+		{
+			$test = $this->directory
+				.ucfirst($this->translate_uri_dashes === TRUE ? str_replace('-', '_', $segments[0]) : $segments[0]);
+
+			if ( ! file_exists(APPPATH.'controllers/'.$test.'.php')
+				&& $directory_override === FALSE
+				&& is_dir(APPPATH.'controllers/'.$this->directory.$segments[0])
+			)
+			{
+				$this->set_directory(array_shift($segments), TRUE);
+				continue;
+			}
+
+			return $segments;
+		}
+
+		// This means that all segments were actually directories
+		return $segments;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse Routes
+	 *
+	 * Matches any routes that may exist in the config/routes.php file
+	 * against the URI to determine if the class/method need to be remapped.
+	 *
+	 * @return	void
+	 */
+	protected function _parse_routes()
+	{
+		// Turn the segment array into a URI string
+		$uri = implode('/', $this->uri->segments);
+
+		// Get HTTP verb
+		$http_verb = isset($_SERVER['REQUEST_METHOD']) ? strtolower($_SERVER['REQUEST_METHOD']) : 'cli';
+
+		// Loop through the route array looking for wildcards
+		foreach ($this->routes as $key => $val)
+		{
+			// Check if route format is using HTTP verbs
+			if (is_array($val))
+			{
+				$val = array_change_key_case($val, CASE_LOWER);
+				if (isset($val[$http_verb]))
+				{
+					$val = $val[$http_verb];
+				}
+				else
+				{
+					continue;
+				}
+			}
+
+			// Convert wildcards to RegEx
+			$key = str_replace(array(':any', ':num'), array('[^/]+', '[0-9]+'), $key);
+
+			// Does the RegEx match?
+			if (preg_match('#^'.$key.'$#', $uri, $matches))
+			{
+				// Are we using callbacks to process back-references?
+				if ( ! is_string($val) && is_callable($val))
+				{
+					// Remove the original string from the matches array.
+					array_shift($matches);
+
+					// Execute the callback using the values in matches as its parameters.
+					$val = call_user_func_array($val, $matches);
+				}
+				// Are we using the default routing method for back-references?
+				elseif (strpos($val, '$') !== FALSE && strpos($key, '(') !== FALSE)
+				{
+					$val = preg_replace('#^'.$key.'$#', $val, $uri);
+				}
+
+				$this->_set_request(explode('/', $val));
+				return;
+			}
+		}
+
+		// If we got this far it means we didn't encounter a
+		// matching route so we'll set the site default route
+		$this->_set_request(array_values($this->uri->segments));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set class name
+	 *
+	 * @param	string	$class	Class name
+	 * @return	void
+	 */
+	public function set_class($class)
+	{
+		$this->class = str_replace(array('/', '.'), '', $class);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set method name
+	 *
+	 * @param	string	$method	Method name
+	 * @return	void
+	 */
+	public function set_method($method)
+	{
+		$this->method = $method;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set directory name
+	 *
+	 * @param	string	$dir	Directory name
+	 * @param	bool	$append	Whether we're appending rather than setting the full value
+	 * @return	void
+	 */
+	public function set_directory($dir, $append = FALSE)
+	{
+		if ($append !== TRUE OR empty($this->directory))
+		{
+			$this->directory = str_replace('.', '', trim($dir, '/')).'/';
+		}
+		else
+		{
+			$this->directory .= str_replace('.', '', trim($dir, '/')).'/';
+		}
+	}
+}
diff --git a/system/core/Security.php b/system/core/Security.php
new file mode 100644
index 00000000..818b0933
--- /dev/null
+++ b/system/core/Security.php
@@ -0,0 +1,1068 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Security Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Security
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/security.html
+ */
+class CI_Security {
+
+	/**
+	 * List of sanitize filename strings
+	 *
+	 * @var	array
+	 */
+	public $filename_bad_chars =	array(
+		'../', '<!--', '-->', '<', '>',
+		"'", '"', '&', '$', '#',
+		'{', '}', '[', ']', '=',
+		';', '?', '%20', '%22',
+		'%3c',		// <
+		'%253c',	// <
+		'%3e',		// >
+		'%0e',		// >
+		'%28',		// (
+		'%29',		// )
+		'%2528',	// (
+		'%26',		// &
+		'%24',		// $
+		'%3f',		// ?
+		'%3b',		// ;
+		'%3d'		// =
+	);
+
+	/**
+	 * Character set
+	 *
+	 * Will be overridden by the constructor.
+	 *
+	 * @var	string
+	 */
+	public $charset = 'UTF-8';
+
+	/**
+	 * XSS Hash
+	 *
+	 * Random Hash for protecting URLs.
+	 *
+	 * @var	string
+	 */
+	protected $_xss_hash;
+
+	/**
+	 * CSRF Hash
+	 *
+	 * Random hash for Cross Site Request Forgery protection cookie
+	 *
+	 * @var	string
+	 */
+	protected $_csrf_hash;
+
+	/**
+	 * CSRF Expire time
+	 *
+	 * Expiration time for Cross Site Request Forgery protection cookie.
+	 * Defaults to two hours (in seconds).
+	 *
+	 * @var	int
+	 */
+	protected $_csrf_expire =	7200;
+
+	/**
+	 * CSRF Token name
+	 *
+	 * Token name for Cross Site Request Forgery protection cookie.
+	 *
+	 * @var	string
+	 */
+	protected $_csrf_token_name =	'ci_csrf_token';
+
+	/**
+	 * CSRF Cookie name
+	 *
+	 * Cookie name for Cross Site Request Forgery protection cookie.
+	 *
+	 * @var	string
+	 */
+	protected $_csrf_cookie_name =	'ci_csrf_token';
+
+	/**
+	 * List of never allowed strings
+	 *
+	 * @var	array
+	 */
+	protected $_never_allowed_str =	array(
+		'document.cookie' => '[removed]',
+		'(document).cookie' => '[removed]',
+		'document.write'  => '[removed]',
+		'(document).write'  => '[removed]',
+		'.parentNode'     => '[removed]',
+		'.innerHTML'      => '[removed]',
+		'-moz-binding'    => '[removed]',
+		'<!--'            => '&lt;!--',
+		'-->'             => '--&gt;',
+		'<![CDATA['       => '&lt;![CDATA[',
+		'<comment>'	  => '&lt;comment&gt;',
+		'<%'              => '&lt;&#37;'
+	);
+
+	/**
+	 * List of never allowed regex replacements
+	 *
+	 * @var	array
+	 */
+	protected $_never_allowed_regex = array(
+		'javascript\s*:',
+		'(\(?document\)?|\(?window\)?(\.document)?)\.(location|on\w*)',
+		'expression\s*(\(|&\#40;)', // CSS and IE
+		'vbscript\s*:', // IE, surprise!
+		'wscript\s*:', // IE
+		'jscript\s*:', // IE
+		'vbs\s*:', // IE
+		'Redirect\s+30\d',
+		"([\"'])?data\s*:[^\\1]*?base64[^\\1]*?,[^\\1]*?\\1?"
+	);
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct($charset)
+	{
+		$this->charset = $charset;
+
+		// Is CSRF protection enabled?
+		if (config_item('csrf_protection') && ! is_cli())
+		{
+			// CSRF config
+			foreach (array('csrf_expire', 'csrf_token_name', 'csrf_cookie_name') as $key)
+			{
+				if (NULL !== ($val = config_item($key)))
+				{
+					$this->{'_'.$key} = $val;
+				}
+			}
+
+			// Append application specific cookie prefix
+			if ($cookie_prefix = config_item('cookie_prefix'))
+			{
+				$this->_csrf_cookie_name = $cookie_prefix.$this->_csrf_cookie_name;
+			}
+
+			// Set the CSRF hash
+			$this->_csrf_set_hash();
+			$this->csrf_verify();
+		}
+
+		log_message('info', 'Security Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CSRF Verify
+	 *
+	 * @return	CI_Security
+	 */
+	public function csrf_verify()
+	{
+		// If it's not a POST request we will set the CSRF cookie
+		if (strtoupper($_SERVER['REQUEST_METHOD']) !== 'POST')
+		{
+			return $this->csrf_set_cookie();
+		}
+
+		// Check if URI has been whitelisted from CSRF checks
+		if ($exclude_uris = config_item('csrf_exclude_uris'))
+		{
+			$uri = load_class('URI', 'core');
+			foreach ($exclude_uris as $excluded)
+			{
+				if (preg_match('#^'.$excluded.'$#i'.(UTF8_ENABLED ? 'u' : ''), $uri->uri_string()))
+				{
+					return $this;
+				}
+			}
+		}
+
+		// Check CSRF token validity, but don't error on mismatch just yet - we'll want to regenerate
+		$valid = isset($_POST[$this->_csrf_token_name], $_COOKIE[$this->_csrf_cookie_name])
+			&& is_string($_POST[$this->_csrf_token_name]) && is_string($_COOKIE[$this->_csrf_cookie_name])
+			&& hash_equals($_POST[$this->_csrf_token_name], $_COOKIE[$this->_csrf_cookie_name]);
+
+		// We kill this since we're done and we don't want to pollute the _POST array
+		unset($_POST[$this->_csrf_token_name]);
+
+		// Regenerate on every submission?
+		if (config_item('csrf_regenerate'))
+		{
+			// Nothing should last forever
+			unset($_COOKIE[$this->_csrf_cookie_name]);
+			$this->_csrf_hash = NULL;
+		}
+
+		$this->_csrf_set_hash();
+		$this->csrf_set_cookie();
+
+		if ($valid !== TRUE)
+		{
+			$this->csrf_show_error();
+		}
+
+		log_message('info', 'CSRF token verified');
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CSRF Set Cookie
+	 *
+	 * @codeCoverageIgnore
+	 * @return	CI_Security
+	 */
+	public function csrf_set_cookie()
+	{
+		$expire = time() + $this->_csrf_expire;
+		$secure_cookie = (bool) config_item('cookie_secure');
+
+		if ($secure_cookie && ! is_https())
+		{
+			return FALSE;
+		}
+
+		setcookie(
+			$this->_csrf_cookie_name,
+			$this->_csrf_hash,
+			$expire,
+			config_item('cookie_path'),
+			config_item('cookie_domain'),
+			$secure_cookie,
+			config_item('cookie_httponly')
+		);
+		log_message('info', 'CSRF cookie sent');
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show CSRF Error
+	 *
+	 * @return	void
+	 */
+	public function csrf_show_error()
+	{
+		show_error('The action you have requested is not allowed.', 403);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get CSRF Hash
+	 *
+	 * @see		CI_Security::$_csrf_hash
+	 * @return 	string	CSRF hash
+	 */
+	public function get_csrf_hash()
+	{
+		return $this->_csrf_hash;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get CSRF Token Name
+	 *
+	 * @see		CI_Security::$_csrf_token_name
+	 * @return	string	CSRF token name
+	 */
+	public function get_csrf_token_name()
+	{
+		return $this->_csrf_token_name;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * XSS Clean
+	 *
+	 * Sanitizes data so that Cross Site Scripting Hacks can be
+	 * prevented.  This method does a fair amount of work but
+	 * it is extremely thorough, designed to prevent even the
+	 * most obscure XSS attempts.  Nothing is ever 100% foolproof,
+	 * of course, but I haven't been able to get anything passed
+	 * the filter.
+	 *
+	 * Note: Should only be used to deal with data upon submission.
+	 *	 It's not something that should be used for general
+	 *	 runtime processing.
+	 *
+	 * @link	http://channel.bitflux.ch/wiki/XSS_Prevention
+	 * 		Based in part on some code and ideas from Bitflux.
+	 *
+	 * @link	http://ha.ckers.org/xss.html
+	 * 		To help develop this script I used this great list of
+	 *		vulnerabilities along with a few other hacks I've
+	 *		harvested from examining vulnerabilities in other programs.
+	 *
+	 * @param	string|string[]	$str		Input data
+	 * @param 	bool		$is_image	Whether the input is an image
+	 * @return	string
+	 */
+	public function xss_clean($str, $is_image = FALSE)
+	{
+		// Is the string an array?
+		if (is_array($str))
+		{
+			foreach ($str as $key => &$value)
+			{
+				$str[$key] = $this->xss_clean($value);
+			}
+
+			return $str;
+		}
+
+		// Remove Invisible Characters
+		$str = remove_invisible_characters($str);
+
+		/*
+		 * URL Decode
+		 *
+		 * Just in case stuff like this is submitted:
+		 *
+		 * <a href="http://%77%77%77%2E%67%6F%6F%67%6C%65%2E%63%6F%6D">Google</a>
+		 *
+		 * Note: Use rawurldecode() so it does not remove plus signs
+		 */
+		if (stripos($str, '%') !== false)
+		{
+			do
+			{
+				$oldstr = $str;
+				$str = rawurldecode($str);
+				$str = preg_replace_callback('#%(?:\s*[0-9a-f]){2,}#i', array($this, '_urldecodespaces'), $str);
+			}
+			while ($oldstr !== $str);
+			unset($oldstr);
+		}
+
+		/*
+		 * Convert character entities to ASCII
+		 *
+		 * This permits our tests below to work reliably.
+		 * We only convert entities that are within tags since
+		 * these are the ones that will pose security problems.
+		 */
+		$str = preg_replace_callback("/[^a-z0-9>]+[a-z0-9]+=([\'\"]).*?\\1/si", array($this, '_convert_attribute'), $str);
+		$str = preg_replace_callback('/<\w+.*/si', array($this, '_decode_entity'), $str);
+
+		// Remove Invisible Characters Again!
+		$str = remove_invisible_characters($str);
+
+		/*
+		 * Convert all tabs to spaces
+		 *
+		 * This prevents strings like this: ja	vascript
+		 * NOTE: we deal with spaces between characters later.
+		 * NOTE: preg_replace was found to be amazingly slow here on
+		 * large blocks of data, so we use str_replace.
+		 */
+		$str = str_replace("\t", ' ', $str);
+
+		// Capture converted string for later comparison
+		$converted_string = $str;
+
+		// Remove Strings that are never allowed
+		$str = $this->_do_never_allowed($str);
+
+		/*
+		 * Makes PHP tags safe
+		 *
+		 * Note: XML tags are inadvertently replaced too:
+		 *
+		 * <?xml
+		 *
+		 * But it doesn't seem to pose a problem.
+		 */
+		if ($is_image === TRUE)
+		{
+			// Images have a tendency to have the PHP short opening and
+			// closing tags every so often so we skip those and only
+			// do the long opening tags.
+			$str = preg_replace('/<\?(php)/i', '&lt;?\\1', $str);
+		}
+		else
+		{
+			$str = str_replace(array('<?', '?'.'>'), array('&lt;?', '?&gt;'), $str);
+		}
+
+		/*
+		 * Compact any exploded words
+		 *
+		 * This corrects words like:  j a v a s c r i p t
+		 * These words are compacted back to their correct state.
+		 */
+		$words = array(
+			'javascript', 'expression', 'vbscript', 'jscript', 'wscript',
+			'vbs', 'script', 'base64', 'applet', 'alert', 'document',
+			'write', 'cookie', 'window', 'confirm', 'prompt', 'eval'
+		);
+
+		foreach ($words as $word)
+		{
+			$word = implode('\s*', str_split($word)).'\s*';
+
+			// We only want to do this when it is followed by a non-word character
+			// That way valid stuff like "dealer to" does not become "dealerto"
+			$str = preg_replace_callback('#('.substr($word, 0, -3).')(\W)#is', array($this, '_compact_exploded_words'), $str);
+		}
+
+		/*
+		 * Remove disallowed Javascript in links or img tags
+		 * We used to do some version comparisons and use of stripos(),
+		 * but it is dog slow compared to these simplified non-capturing
+		 * preg_match(), especially if the pattern exists in the string
+		 *
+		 * Note: It was reported that not only space characters, but all in
+		 * the following pattern can be parsed as separators between a tag name
+		 * and its attributes: [\d\s"\'`;,\/\=\(\x00\x0B\x09\x0C]
+		 * ... however, remove_invisible_characters() above already strips the
+		 * hex-encoded ones, so we'll skip them below.
+		 */
+		do
+		{
+			$original = $str;
+
+			if (preg_match('/<a/i', $str))
+			{
+				$str = preg_replace_callback('#<a(?:rea)?[^a-z0-9>]+([^>]*?)(?:>|$)#si', array($this, '_js_link_removal'), $str);
+			}
+
+			if (preg_match('/<img/i', $str))
+			{
+				$str = preg_replace_callback('#<img[^a-z0-9]+([^>]*?)(?:\s?/?>|$)#si', array($this, '_js_img_removal'), $str);
+			}
+
+			if (preg_match('/script|xss/i', $str))
+			{
+				$str = preg_replace('#</*(?:script|xss).*?>#si', '[removed]', $str);
+			}
+		}
+		while ($original !== $str);
+		unset($original);
+
+		/*
+		 * Sanitize naughty HTML elements
+		 *
+		 * If a tag containing any of the words in the list
+		 * below is found, the tag gets converted to entities.
+		 *
+		 * So this: <blink>
+		 * Becomes: &lt;blink&gt;
+		 */
+		$pattern = '#'
+			.'<((?<slash>/*\s*)((?<tagName>[a-z0-9]+)(?=[^a-z0-9]|$)|.+)' // tag start and name, followed by a non-tag character
+			.'[^\s\042\047a-z0-9>/=]*' // a valid attribute character immediately after the tag would count as a separator
+			// optional attributes
+			.'(?<attributes>(?:[\s\042\047/=]*' // non-attribute characters, excluding > (tag close) for obvious reasons
+			.'[^\s\042\047>/=]+' // attribute characters
+			// optional attribute-value
+				.'(?:\s*=' // attribute-value separator
+					.'(?:[^\s\042\047=><`]+|\s*\042[^\042]*\042|\s*\047[^\047]*\047|\s*(?U:[^\s\042\047=><`]*))' // single, double or non-quoted value
+				.')?' // end optional attribute-value group
+			.')*)' // end optional attributes group
+			.'[^>]*)(?<closeTag>\>)?#isS';
+
+		// Note: It would be nice to optimize this for speed, BUT
+		//       only matching the naughty elements here results in
+		//       false positives and in turn - vulnerabilities!
+		do
+		{
+			$old_str = $str;
+			$str = preg_replace_callback($pattern, array($this, '_sanitize_naughty_html'), $str);
+		}
+		while ($old_str !== $str);
+		unset($old_str);
+
+		/*
+		 * Sanitize naughty scripting elements
+		 *
+		 * Similar to above, only instead of looking for
+		 * tags it looks for PHP and JavaScript commands
+		 * that are disallowed. Rather than removing the
+		 * code, it simply converts the parenthesis to entities
+		 * rendering the code un-executable.
+		 *
+		 * For example:	eval('some code')
+		 * Becomes:	eval&#40;'some code'&#41;
+		 */
+		$str = preg_replace(
+			'#(alert|prompt|confirm|cmd|passthru|eval|exec|expression|system|fopen|fsockopen|file|file_get_contents|readfile|unlink)(\s*)\((.*?)\)#si',
+			'\\1\\2&#40;\\3&#41;',
+			$str
+		);
+
+		// Same thing, but for "tag functions" (e.g. eval`some code`)
+		// See https://github.com/bcit-ci/CodeIgniter/issues/5420
+		$str = preg_replace(
+			'#(alert|prompt|confirm|cmd|passthru|eval|exec|expression|system|fopen|fsockopen|file|file_get_contents|readfile|unlink)(\s*)`(.*?)`#si',
+			'\\1\\2&#96;\\3&#96;',
+			$str
+		);
+
+		// Final clean up
+		// This adds a bit of extra precaution in case
+		// something got through the above filters
+		$str = $this->_do_never_allowed($str);
+
+		/*
+		 * Images are Handled in a Special Way
+		 * - Essentially, we want to know that after all of the character
+		 * conversion is done whether any unwanted, likely XSS, code was found.
+		 * If not, we return TRUE, as the image is clean.
+		 * However, if the string post-conversion does not matched the
+		 * string post-removal of XSS, then it fails, as there was unwanted XSS
+		 * code found and removed/changed during processing.
+		 */
+		if ($is_image === TRUE)
+		{
+			return ($str === $converted_string);
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * XSS Hash
+	 *
+	 * Generates the XSS hash if needed and returns it.
+	 *
+	 * @see		CI_Security::$_xss_hash
+	 * @return	string	XSS hash
+	 */
+	public function xss_hash()
+	{
+		if ($this->_xss_hash === NULL)
+		{
+			$rand = $this->get_random_bytes(16);
+			$this->_xss_hash = ($rand === FALSE)
+				? md5(uniqid(mt_rand(), TRUE))
+				: bin2hex($rand);
+		}
+
+		return $this->_xss_hash;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get random bytes
+	 *
+	 * @param	int	$length	Output length
+	 * @return	string
+	 */
+	public function get_random_bytes($length)
+	{
+		if (empty($length) OR ! ctype_digit((string) $length))
+		{
+			return FALSE;
+		}
+
+		if (function_exists('random_bytes'))
+		{
+			try
+			{
+				// The cast is required to avoid TypeError
+				return random_bytes((int) $length);
+			}
+			catch (Exception $e)
+			{
+				// If random_bytes() can't do the job, we can't either ...
+				// There's no point in using fallbacks.
+				log_message('error', $e->getMessage());
+				return FALSE;
+			}
+		}
+
+		// Unfortunately, none of the following PRNGs is guaranteed to exist ...
+		if (defined('MCRYPT_DEV_URANDOM') && ($output = mcrypt_create_iv($length, MCRYPT_DEV_URANDOM)) !== FALSE)
+		{
+			return $output;
+		}
+
+
+		if (is_readable('/dev/urandom') && ($fp = fopen('/dev/urandom', 'rb')) !== FALSE)
+		{
+			// Try not to waste entropy ...
+			stream_set_chunk_size($fp, $length);
+			$output = fread($fp, $length);
+			fclose($fp);
+			if ($output !== FALSE)
+			{
+				return $output;
+			}
+		}
+
+		if (function_exists('openssl_random_pseudo_bytes'))
+		{
+			return openssl_random_pseudo_bytes($length);
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * HTML Entities Decode
+	 *
+	 * A replacement for html_entity_decode()
+	 *
+	 * The reason we are not using html_entity_decode() by itself is because
+	 * while it is not technically correct to leave out the semicolon
+	 * at the end of an entity most browsers will still interpret the entity
+	 * correctly. html_entity_decode() does not convert entities without
+	 * semicolons, so we are left with our own little solution here. Bummer.
+	 *
+	 * @link	https://secure.php.net/html-entity-decode
+	 *
+	 * @param	string	$str		Input
+	 * @param	string	$charset	Character set
+	 * @return	string
+	 */
+	public function entity_decode($str, $charset = NULL)
+	{
+		if (strpos($str, '&') === FALSE)
+		{
+			return $str;
+		}
+
+		static $_entities;
+
+		isset($charset)   OR $charset = $this->charset;
+		isset($_entities) OR $_entities = array_map('strtolower', get_html_translation_table(HTML_ENTITIES, ENT_COMPAT | ENT_HTML5, $charset));
+
+		do
+		{
+			$str_compare = $str;
+
+			// Decode standard entities, avoiding false positives
+			if (preg_match_all('/&[a-z]{2,}(?![a-z;])/i', $str, $matches))
+			{
+				$replace = array();
+				$matches = array_unique(array_map('strtolower', $matches[0]));
+				foreach ($matches as &$match)
+				{
+					if (($char = array_search($match.';', $_entities, TRUE)) !== FALSE)
+					{
+						$replace[$match] = $char;
+					}
+				}
+
+				$str = str_replace(array_keys($replace), array_values($replace), $str);
+			}
+
+			// Decode numeric & UTF16 two byte entities
+			$str = html_entity_decode(
+				preg_replace('/(&#(?:x0*[0-9a-f]{2,5}(?![0-9a-f;])|(?:0*\d{2,4}(?![0-9;]))))/iS', '$1;', $str),
+				ENT_COMPAT | ENT_HTML5,
+				$charset
+			);
+		}
+		while ($str_compare !== $str);
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sanitize Filename
+	 *
+	 * @param	string	$str		Input file name
+	 * @param 	bool	$relative_path	Whether to preserve paths
+	 * @return	string
+	 */
+	public function sanitize_filename($str, $relative_path = FALSE)
+	{
+		$bad = $this->filename_bad_chars;
+
+		if ( ! $relative_path)
+		{
+			$bad[] = './';
+			$bad[] = '/';
+		}
+
+		$str = remove_invisible_characters($str, FALSE);
+
+		do
+		{
+			$old = $str;
+			$str = str_replace($bad, '', $str);
+		}
+		while ($old !== $str);
+
+		return stripslashes($str);
+	}
+
+	// ----------------------------------------------------------------
+
+	/**
+	 * Strip Image Tags
+	 *
+	 * @param	string	$str
+	 * @return	string
+	 */
+	public function strip_image_tags($str)
+	{
+		return preg_replace(
+			array(
+				'#<img[\s/]+.*?src\s*=\s*(["\'])([^\\1]+?)\\1.*?\>#i',
+				'#<img[\s/]+.*?src\s*=\s*?(([^\s"\'=<>`]+)).*?\>#i'
+			),
+			'\\2',
+			$str
+		);
+	}
+
+	// ----------------------------------------------------------------
+
+	/**
+	 * URL-decode taking spaces into account
+	 *
+	 * @see		https://github.com/bcit-ci/CodeIgniter/issues/4877
+	 * @param	array	$matches
+	 * @return	string
+	 */
+	protected function _urldecodespaces($matches)
+	{
+		$input    = $matches[0];
+		$nospaces = preg_replace('#\s+#', '', $input);
+		return ($nospaces === $input)
+			? $input
+			: rawurldecode($nospaces);
+	}
+
+	// ----------------------------------------------------------------
+
+	/**
+	 * Compact Exploded Words
+	 *
+	 * Callback method for xss_clean() to remove whitespace from
+	 * things like 'j a v a s c r i p t'.
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param	array	$matches
+	 * @return	string
+	 */
+	protected function _compact_exploded_words($matches)
+	{
+		return preg_replace('/\s+/s', '', $matches[1]).$matches[2];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sanitize Naughty HTML
+	 *
+	 * Callback method for xss_clean() to remove naughty HTML elements.
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param	array	$matches
+	 * @return	string
+	 */
+	protected function _sanitize_naughty_html($matches)
+	{
+		static $naughty_tags    = array(
+			'alert', 'area', 'prompt', 'confirm', 'applet', 'audio', 'basefont', 'base', 'behavior', 'bgsound',
+			'blink', 'body', 'embed', 'expression', 'form', 'frameset', 'frame', 'head', 'html', 'ilayer',
+			'iframe', 'input', 'button', 'select', 'isindex', 'layer', 'link', 'meta', 'keygen', 'object',
+			'plaintext', 'style', 'script', 'textarea', 'title', 'math', 'video', 'svg', 'xml', 'xss'
+		);
+
+		static $evil_attributes = array(
+			'on\w+', 'style', 'xmlns', 'formaction', 'form', 'xlink:href', 'FSCommand', 'seekSegmentTime'
+		);
+
+		// First, escape unclosed tags
+		if (empty($matches['closeTag']))
+		{
+			return '&lt;'.$matches[1];
+		}
+		// Is the element that we caught naughty? If so, escape it
+		elseif (in_array(strtolower($matches['tagName']), $naughty_tags, TRUE))
+		{
+			return '&lt;'.$matches[1].'&gt;';
+		}
+		// For other tags, see if their attributes are "evil" and strip those
+		elseif (isset($matches['attributes']))
+		{
+			// We'll store the already filtered attributes here
+			$attributes = array();
+
+			// Attribute-catching pattern
+			$attributes_pattern = '#'
+				.'(?<name>[^\s\042\047>/=]+)' // attribute characters
+				// optional attribute-value
+				.'(?:\s*=(?<value>[^\s\042\047=><`]+|\s*\042[^\042]*\042|\s*\047[^\047]*\047|\s*(?U:[^\s\042\047=><`]*)))' // attribute-value separator
+				.'#i';
+
+			// Blacklist pattern for evil attribute names
+			$is_evil_pattern = '#^('.implode('|', $evil_attributes).')$#i';
+
+			// Each iteration filters a single attribute
+			do
+			{
+				// Strip any non-alpha characters that may precede an attribute.
+				// Browsers often parse these incorrectly and that has been a
+				// of numerous XSS issues we've had.
+				$matches['attributes'] = preg_replace('#^[^a-z]+#i', '', $matches['attributes']);
+
+				if ( ! preg_match($attributes_pattern, $matches['attributes'], $attribute, PREG_OFFSET_CAPTURE))
+				{
+					// No (valid) attribute found? Discard everything else inside the tag
+					break;
+				}
+
+				if (
+					// Is it indeed an "evil" attribute?
+					preg_match($is_evil_pattern, $attribute['name'][0])
+					// Or does it have an equals sign, but no value and not quoted? Strip that too!
+					OR (trim($attribute['value'][0]) === '')
+				)
+				{
+					$attributes[] = 'xss=removed';
+				}
+				else
+				{
+					$attributes[] = $attribute[0][0];
+				}
+
+				$matches['attributes'] = substr($matches['attributes'], $attribute[0][1] + strlen($attribute[0][0]));
+			}
+			while ($matches['attributes'] !== '');
+
+			$attributes = empty($attributes)
+				? ''
+				: ' '.implode(' ', $attributes);
+			return '<'.$matches['slash'].$matches['tagName'].$attributes.'>';
+		}
+
+		return $matches[0];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * JS Link Removal
+	 *
+	 * Callback method for xss_clean() to sanitize links.
+	 *
+	 * This limits the PCRE backtracks, making it more performance friendly
+	 * and prevents PREG_BACKTRACK_LIMIT_ERROR from being triggered in
+	 * PHP 5.2+ on link-heavy strings.
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param	array	$match
+	 * @return	string
+	 */
+	protected function _js_link_removal($match)
+	{
+		return str_replace(
+			$match[1],
+			preg_replace(
+				'#href=.*?(?:(?:alert|prompt|confirm)(?:\(|&\#40;|`|&\#96;)|javascript:|livescript:|mocha:|charset=|window\.|\(?document\)?\.|\.cookie|<script|<xss|d\s*a\s*t\s*a\s*:)#si',
+				'',
+				$this->_filter_attributes($match[1])
+			),
+			$match[0]
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * JS Image Removal
+	 *
+	 * Callback method for xss_clean() to sanitize image tags.
+	 *
+	 * This limits the PCRE backtracks, making it more performance friendly
+	 * and prevents PREG_BACKTRACK_LIMIT_ERROR from being triggered in
+	 * PHP 5.2+ on image tag heavy strings.
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param	array	$match
+	 * @return	string
+	 */
+	protected function _js_img_removal($match)
+	{
+		return str_replace(
+			$match[1],
+			preg_replace(
+				'#src=.*?(?:(?:alert|prompt|confirm|eval)(?:\(|&\#40;|`|&\#96;)|javascript:|livescript:|mocha:|charset=|window\.|\(?document\)?\.|\.cookie|<script|<xss|base64\s*,)#si',
+				'',
+				$this->_filter_attributes($match[1])
+			),
+			$match[0]
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Attribute Conversion
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param	array	$match
+	 * @return	string
+	 */
+	protected function _convert_attribute($match)
+	{
+		return str_replace(array('>', '<', '\\'), array('&gt;', '&lt;', '\\\\'), $match[0]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Filter Attributes
+	 *
+	 * Filters tag attributes for consistency and safety.
+	 *
+	 * @used-by	CI_Security::_js_img_removal()
+	 * @used-by	CI_Security::_js_link_removal()
+	 * @param	string	$str
+	 * @return	string
+	 */
+	protected function _filter_attributes($str)
+	{
+		$out = '';
+		if (preg_match_all('#\s*[a-z\-]+\s*=\s*(\042|\047)([^\\1]*?)\\1#is', $str, $matches))
+		{
+			foreach ($matches[0] as $match)
+			{
+				$out .= preg_replace('#/\*.*?\*/#s', '', $match);
+			}
+		}
+
+		return $out;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * HTML Entity Decode Callback
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param	array	$match
+	 * @return	string
+	 */
+	protected function _decode_entity($match)
+	{
+		// Protect GET variables in URLs
+		// 901119URL5918AMP18930PROTECT8198
+		$match = preg_replace('|\&([a-z\_0-9\-]+)\=([a-z\_0-9\-/]+)|i', $this->xss_hash().'\\1=\\2', $match[0]);
+
+		// Decode, then un-protect URL GET vars
+		return str_replace(
+			$this->xss_hash(),
+			'&',
+			$this->entity_decode($match, $this->charset)
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Do Never Allowed
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param 	string
+	 * @return 	string
+	 */
+	protected function _do_never_allowed($str)
+	{
+		$str = str_replace(array_keys($this->_never_allowed_str), $this->_never_allowed_str, $str);
+
+		foreach ($this->_never_allowed_regex as $regex)
+		{
+			$str = preg_replace('#'.$regex.'#is', '[removed]', $str);
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set CSRF Hash and Cookie
+	 *
+	 * @return	string
+	 */
+	protected function _csrf_set_hash()
+	{
+		if ($this->_csrf_hash === NULL)
+		{
+			// If the cookie exists we will use its value.
+			// We don't necessarily want to regenerate it with
+			// each page load since a page could contain embedded
+			// sub-pages causing this feature to fail
+			if (isset($_COOKIE[$this->_csrf_cookie_name]) && is_string($_COOKIE[$this->_csrf_cookie_name])
+				&& preg_match('#^[0-9a-f]{32}$#iS', $_COOKIE[$this->_csrf_cookie_name]) === 1)
+			{
+				return $this->_csrf_hash = $_COOKIE[$this->_csrf_cookie_name];
+			}
+
+			$rand = $this->get_random_bytes(16);
+			$this->_csrf_hash = ($rand === FALSE)
+				? md5(uniqid(mt_rand(), TRUE))
+				: bin2hex($rand);
+		}
+
+		return $this->_csrf_hash;
+	}
+}
diff --git a/system/core/URI.php b/system/core/URI.php
new file mode 100644
index 00000000..9bef22d6
--- /dev/null
+++ b/system/core/URI.php
@@ -0,0 +1,661 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * URI Class
+ *
+ * Parses URIs and determines routing
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	URI
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/uri.html
+ */
+class CI_URI {
+
+	/**
+	 * List of cached URI segments
+	 *
+	 * @var	array
+	 */
+	public $keyval = array();
+
+	/**
+	 * Current URI string
+	 *
+	 * @var	string
+	 */
+	public $uri_string = '';
+
+	/**
+	 * List of URI segments
+	 *
+	 * Starts at 1 instead of 0.
+	 *
+	 * @var	array
+	 */
+	public $segments = array();
+
+	/**
+	 * List of routed URI segments
+	 *
+	 * Starts at 1 instead of 0.
+	 *
+	 * @var	array
+	 */
+	public $rsegments = array();
+
+	/**
+	 * Permitted URI chars
+	 *
+	 * PCRE character group allowed in URI segments
+	 *
+	 * @var	string
+	 */
+	protected $_permitted_uri_chars;
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct(CI_Config $config)
+	{
+		$this->config = $config;
+
+		// If it's a CLI request, ignore the configuration
+		if (is_cli())
+		{
+			$this->_set_uri_string($this->_parse_argv(), TRUE);
+		}
+		// If query strings are enabled, we don't need to parse any segments.
+		elseif ($this->config->item('enable_query_strings') !== TRUE)
+		{
+			$this->_permitted_uri_chars = $this->config->item('permitted_uri_chars');
+			$protocol = $this->config->item('uri_protocol');
+			empty($protocol) && $protocol = 'REQUEST_URI';
+
+			switch ($protocol)
+			{
+				case 'AUTO': // For BC purposes only
+				case 'REQUEST_URI':
+					$uri = $this->_parse_request_uri();
+					break;
+				case 'QUERY_STRING':
+					$uri = $this->_parse_query_string();
+					break;
+				case 'PATH_INFO':
+				default:
+					$uri = isset($_SERVER[$protocol])
+						? $_SERVER[$protocol]
+						: $this->_parse_request_uri();
+					break;
+			}
+
+			$this->_set_uri_string($uri, FALSE);
+		}
+
+		log_message('info', 'URI Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set URI String
+	 *
+	 * @param 	string	$str	Input URI string
+	 * @param	bool	$is_cli	Whether the input comes from CLI
+	 * @return	void
+	 */
+	protected function _set_uri_string($str, $is_cli = FALSE)
+	{
+		// CLI requests have a bit simpler logic
+		if ($is_cli)
+		{
+			if (($this->uri_string = trim($str, '/')) === '')
+			{
+				return;
+			}
+
+			$this->segments[0] = NULL;
+			foreach (explode('/', $this->uri_string) as $segment)
+			{
+				if (($segment = trim($segment)) !== '')
+				{
+					$this->segments[] = $segment;
+				}
+			}
+
+			unset($this->segments[0]);
+			return;
+		}
+
+		// Filter out control characters and trim slashes
+		$this->uri_string = trim(remove_invisible_characters($str, FALSE), '/');
+
+		if ($this->uri_string === '')
+		{
+			return;
+		}
+
+		// Remove the URL suffix, if present
+		if (($suffix = (string) $this->config->item('url_suffix')) !== '')
+		{
+			$slen = strlen($suffix);
+
+			if (substr($this->uri_string, -$slen) === $suffix)
+			{
+				$this->uri_string = substr($this->uri_string, 0, -$slen);
+			}
+		}
+
+		$this->segments[0] = NULL;
+		foreach (explode('/', trim($this->uri_string, '/')) as $segment)
+		{
+			$segment = trim($segment);
+			// Filter segments for security
+			$this->filter_uri($segment);
+
+			if ($segment !== '')
+			{
+				$this->segments[] = $segment;
+			}
+		}
+
+		unset($this->segments[0]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse REQUEST_URI
+	 *
+	 * Will parse REQUEST_URI and automatically detect the URI from it,
+	 * while fixing the query string if necessary.
+	 *
+	 * @return	string
+	 */
+	protected function _parse_request_uri()
+	{
+		if ( ! isset($_SERVER['REQUEST_URI'], $_SERVER['SCRIPT_NAME']))
+		{
+			return '';
+		}
+
+		// parse_url() returns false if no host is present, but the path or query string
+		// contains a colon followed by a number
+		$uri = parse_url('http://dummy'.$_SERVER['REQUEST_URI']);
+		$query = isset($uri['query']) ? $uri['query'] : '';
+		$uri = isset($uri['path']) ? $uri['path'] : '';
+
+		if (isset($_SERVER['SCRIPT_NAME'][0]))
+		{
+			if (strpos($uri, $_SERVER['SCRIPT_NAME']) === 0)
+			{
+				$uri = (string) substr($uri, strlen($_SERVER['SCRIPT_NAME']));
+			}
+			elseif (strpos($uri, dirname($_SERVER['SCRIPT_NAME'])) === 0)
+			{
+				$uri = (string) substr($uri, strlen(dirname($_SERVER['SCRIPT_NAME'])));
+			}
+		}
+
+		// This section ensures that even on servers that require the URI to be in the query string (Nginx) a correct
+		// URI is found, and also fixes the QUERY_STRING server var and $_GET array.
+		if (trim($uri, '/') === '' && strncmp($query, '/', 1) === 0)
+		{
+			$query = explode('?', $query, 2);
+			$uri = $query[0];
+			$_SERVER['QUERY_STRING'] = isset($query[1]) ? $query[1] : '';
+		}
+		else
+		{
+			$_SERVER['QUERY_STRING'] = $query;
+		}
+
+		parse_str($_SERVER['QUERY_STRING'], $_GET);
+
+		if ($uri === '/' OR $uri === '')
+		{
+			return '/';
+		}
+
+		// Do some final cleaning of the URI and return it
+		return $this->_remove_relative_directory($uri);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse QUERY_STRING
+	 *
+	 * Will parse QUERY_STRING and automatically detect the URI from it.
+	 *
+	 * @return	string
+	 */
+	protected function _parse_query_string()
+	{
+		$uri = isset($_SERVER['QUERY_STRING']) ? $_SERVER['QUERY_STRING'] : @getenv('QUERY_STRING');
+
+		if (trim($uri, '/') === '')
+		{
+			return '';
+		}
+		elseif (strncmp($uri, '/', 1) === 0)
+		{
+			$uri = explode('?', $uri, 2);
+			$_SERVER['QUERY_STRING'] = isset($uri[1]) ? $uri[1] : '';
+			$uri = $uri[0];
+		}
+
+		parse_str($_SERVER['QUERY_STRING'], $_GET);
+
+		return $this->_remove_relative_directory($uri);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse CLI arguments
+	 *
+	 * Take each command line argument and assume it is a URI segment.
+	 *
+	 * @return	string
+	 */
+	protected function _parse_argv()
+	{
+		$args = array_slice($_SERVER['argv'], 1);
+		return $args ? implode('/', $args) : '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Remove relative directory (../) and multi slashes (///)
+	 *
+	 * Do some final cleaning of the URI and return it, currently only used in self::_parse_request_uri()
+	 *
+	 * @param	string	$uri
+	 * @return	string
+	 */
+	protected function _remove_relative_directory($uri)
+	{
+		$uris = array();
+		$tok = strtok($uri, '/');
+		while ($tok !== FALSE)
+		{
+			if (( ! empty($tok) OR $tok === '0') && $tok !== '..')
+			{
+				$uris[] = $tok;
+			}
+			$tok = strtok('/');
+		}
+
+		return implode('/', $uris);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Filter URI
+	 *
+	 * Filters segments for malicious characters.
+	 *
+	 * @param	string	$str
+	 * @return	void
+	 */
+	public function filter_uri(&$str)
+	{
+		if ( ! empty($str) && ! empty($this->_permitted_uri_chars) && ! preg_match('/^['.$this->_permitted_uri_chars.']+$/i'.(UTF8_ENABLED ? 'u' : ''), $str))
+		{
+			show_error('The URI you submitted has disallowed characters.', 400);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch URI Segment
+	 *
+	 * @see		CI_URI::$segments
+	 * @param	int		$n		Index
+	 * @param	mixed		$no_result	What to return if the segment index is not found
+	 * @return	mixed
+	 */
+	public function segment($n, $no_result = NULL)
+	{
+		return isset($this->segments[$n]) ? $this->segments[$n] : $no_result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch URI "routed" Segment
+	 *
+	 * Returns the re-routed URI segment (assuming routing rules are used)
+	 * based on the index provided. If there is no routing, will return
+	 * the same result as CI_URI::segment().
+	 *
+	 * @see		CI_URI::$rsegments
+	 * @see		CI_URI::segment()
+	 * @param	int		$n		Index
+	 * @param	mixed		$no_result	What to return if the segment index is not found
+	 * @return	mixed
+	 */
+	public function rsegment($n, $no_result = NULL)
+	{
+		return isset($this->rsegments[$n]) ? $this->rsegments[$n] : $no_result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * URI to assoc
+	 *
+	 * Generates an associative array of URI data starting at the supplied
+	 * segment index. For example, if this is your URI:
+	 *
+	 *	example.com/user/search/name/joe/location/UK/gender/male
+	 *
+	 * You can use this method to generate an array with this prototype:
+	 *
+	 *	array (
+	 *		name => joe
+	 *		location => UK
+	 *		gender => male
+	 *	 )
+	 *
+	 * @param	int	$n		Index (default: 3)
+	 * @param	array	$default	Default values
+	 * @return	array
+	 */
+	public function uri_to_assoc($n = 3, $default = array())
+	{
+		return $this->_uri_to_assoc($n, $default, 'segment');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Routed URI to assoc
+	 *
+	 * Identical to CI_URI::uri_to_assoc(), only it uses the re-routed
+	 * segment array.
+	 *
+	 * @see		CI_URI::uri_to_assoc()
+	 * @param 	int	$n		Index (default: 3)
+	 * @param 	array	$default	Default values
+	 * @return 	array
+	 */
+	public function ruri_to_assoc($n = 3, $default = array())
+	{
+		return $this->_uri_to_assoc($n, $default, 'rsegment');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal URI-to-assoc
+	 *
+	 * Generates a key/value pair from the URI string or re-routed URI string.
+	 *
+	 * @used-by	CI_URI::uri_to_assoc()
+	 * @used-by	CI_URI::ruri_to_assoc()
+	 * @param	int	$n		Index (default: 3)
+	 * @param	array	$default	Default values
+	 * @param	string	$which		Array name ('segment' or 'rsegment')
+	 * @return	array
+	 */
+	protected function _uri_to_assoc($n = 3, $default = array(), $which = 'segment')
+	{
+		if ( ! is_numeric($n))
+		{
+			return $default;
+		}
+
+		if (isset($this->keyval[$which], $this->keyval[$which][$n]))
+		{
+			return $this->keyval[$which][$n];
+		}
+
+		$total_segments = "total_{$which}s";
+		$segment_array = "{$which}_array";
+
+		if ($this->$total_segments() < $n)
+		{
+			return (count($default) === 0)
+				? array()
+				: array_fill_keys($default, NULL);
+		}
+
+		$segments = array_slice($this->$segment_array(), ($n - 1));
+		$i = 0;
+		$lastval = '';
+		$retval = array();
+		foreach ($segments as $seg)
+		{
+			if ($i % 2)
+			{
+				$retval[$lastval] = $seg;
+			}
+			else
+			{
+				$retval[$seg] = NULL;
+				$lastval = $seg;
+			}
+
+			$i++;
+		}
+
+		if (count($default) > 0)
+		{
+			foreach ($default as $val)
+			{
+				if ( ! array_key_exists($val, $retval))
+				{
+					$retval[$val] = NULL;
+				}
+			}
+		}
+
+		// Cache the array for reuse
+		isset($this->keyval[$which]) OR $this->keyval[$which] = array();
+		$this->keyval[$which][$n] = $retval;
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Assoc to URI
+	 *
+	 * Generates a URI string from an associative array.
+	 *
+	 * @param	array	$array	Input array of key/value pairs
+	 * @return	string	URI string
+	 */
+	public function assoc_to_uri($array)
+	{
+		$temp = array();
+		foreach ((array) $array as $key => $val)
+		{
+			$temp[] = $key;
+			$temp[] = $val;
+		}
+
+		return implode('/', $temp);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Slash segment
+	 *
+	 * Fetches an URI segment with a slash.
+	 *
+	 * @param	int	$n	Index
+	 * @param	string	$where	Where to add the slash ('trailing' or 'leading')
+	 * @return	string
+	 */
+	public function slash_segment($n, $where = 'trailing')
+	{
+		return $this->_slash_segment($n, $where, 'segment');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Slash routed segment
+	 *
+	 * Fetches an URI routed segment with a slash.
+	 *
+	 * @param	int	$n	Index
+	 * @param	string	$where	Where to add the slash ('trailing' or 'leading')
+	 * @return	string
+	 */
+	public function slash_rsegment($n, $where = 'trailing')
+	{
+		return $this->_slash_segment($n, $where, 'rsegment');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal Slash segment
+	 *
+	 * Fetches an URI Segment and adds a slash to it.
+	 *
+	 * @used-by	CI_URI::slash_segment()
+	 * @used-by	CI_URI::slash_rsegment()
+	 *
+	 * @param	int	$n	Index
+	 * @param	string	$where	Where to add the slash ('trailing' or 'leading')
+	 * @param	string	$which	Array name ('segment' or 'rsegment')
+	 * @return	string
+	 */
+	protected function _slash_segment($n, $where = 'trailing', $which = 'segment')
+	{
+		$leading = $trailing = '/';
+
+		if ($where === 'trailing')
+		{
+			$leading	= '';
+		}
+		elseif ($where === 'leading')
+		{
+			$trailing	= '';
+		}
+
+		return $leading.$this->$which($n).$trailing;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Segment Array
+	 *
+	 * @return	array	CI_URI::$segments
+	 */
+	public function segment_array()
+	{
+		return $this->segments;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Routed Segment Array
+	 *
+	 * @return	array	CI_URI::$rsegments
+	 */
+	public function rsegment_array()
+	{
+		return $this->rsegments;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Total number of segments
+	 *
+	 * @return	int
+	 */
+	public function total_segments()
+	{
+		return count($this->segments);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Total number of routed segments
+	 *
+	 * @return	int
+	 */
+	public function total_rsegments()
+	{
+		return count($this->rsegments);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch URI string
+	 *
+	 * @return	string	CI_URI::$uri_string
+	 */
+	public function uri_string()
+	{
+		return $this->uri_string;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Re-routed URI string
+	 *
+	 * @return	string
+	 */
+	public function ruri_string()
+	{
+		return ltrim(load_class('Router', 'core')->directory, '/').implode('/', $this->rsegments);
+	}
+
+}
diff --git a/system/core/Utf8.php b/system/core/Utf8.php
new file mode 100644
index 00000000..5e18f07b
--- /dev/null
+++ b/system/core/Utf8.php
@@ -0,0 +1,164 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Utf8 Class
+ *
+ * Provides support for UTF-8 environments
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	UTF-8
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/utf8.html
+ */
+class CI_Utf8 {
+
+	/**
+	 * Class constructor
+	 *
+	 * Determines if UTF-8 support is to be enabled.
+	 *
+	 * @return	void
+	 */
+	public function __construct($charset)
+	{
+		if (
+			defined('PREG_BAD_UTF8_ERROR')                     // PCRE must support UTF-8
+			&& (ICONV_ENABLED === TRUE OR MB_ENABLED === TRUE) // iconv or mbstring must be installed
+			&& $charset === 'UTF-8'                            // Application charset must be UTF-8
+		)
+		{
+			define('UTF8_ENABLED', TRUE);
+			log_message('info', 'UTF-8 Support Enabled');
+		}
+		else
+		{
+			define('UTF8_ENABLED', FALSE);
+			log_message('info', 'UTF-8 Support Disabled');
+		}
+
+		log_message('info', 'Utf8 Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Clean UTF-8 strings
+	 *
+	 * Ensures strings contain only valid UTF-8 characters.
+	 *
+	 * @param	string	$str	String to clean
+	 * @return	string
+	 */
+	public function clean_string($str)
+	{
+		if ($this->is_ascii($str) === FALSE)
+		{
+			if (MB_ENABLED)
+			{
+				$str = mb_convert_encoding($str, 'UTF-8', 'UTF-8');
+			}
+			elseif (ICONV_ENABLED)
+			{
+				$str = @iconv('UTF-8', 'UTF-8//IGNORE', $str);
+			}
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Remove ASCII control characters
+	 *
+	 * Removes all ASCII control characters except horizontal tabs,
+	 * line feeds, and carriage returns, as all others can cause
+	 * problems in XML.
+	 *
+	 * @param	string	$str	String to clean
+	 * @return	string
+	 */
+	public function safe_ascii_for_xml($str)
+	{
+		return remove_invisible_characters($str, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Convert to UTF-8
+	 *
+	 * Attempts to convert a string to UTF-8.
+	 *
+	 * @param	string	$str		Input string
+	 * @param	string	$encoding	Input encoding
+	 * @return	string	$str encoded in UTF-8 or FALSE on failure
+	 */
+	public function convert_to_utf8($str, $encoding)
+	{
+		if (MB_ENABLED)
+		{
+			return mb_convert_encoding($str, 'UTF-8', $encoding);
+		}
+		elseif (ICONV_ENABLED)
+		{
+			return @iconv($encoding, 'UTF-8', $str);
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is ASCII?
+	 *
+	 * Tests if a string is standard 7-bit ASCII or not.
+	 *
+	 * @param	string	$str	String to check
+	 * @return	bool
+	 */
+	public function is_ascii($str)
+	{
+		return (preg_match('/[^\x00-\x7F]/S', $str) === 0);
+	}
+
+}
diff --git a/system/core/compat/hash.php b/system/core/compat/hash.php
new file mode 100644
index 00000000..f1829a3a
--- /dev/null
+++ b/system/core/compat/hash.php
@@ -0,0 +1,252 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PHP ext/hash compatibility package
+ *
+ * @package		CodeIgniter
+ * @subpackage	CodeIgniter
+ * @category	Compatibility
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/
+ * @link		https://secure.php.net/hash
+ */
+
+// ------------------------------------------------------------------------
+
+if (is_php('5.6'))
+{
+	return;
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('hash_equals'))
+{
+	/**
+	 * hash_equals()
+	 *
+	 * @link	https://secure.php.net/hash_equals
+	 * @param	string	$known_string
+	 * @param	string	$user_string
+	 * @return	bool
+	 */
+	function hash_equals($known_string, $user_string)
+	{
+		if ( ! is_string($known_string))
+		{
+			trigger_error('hash_equals(): Expected known_string to be a string, '.strtolower(gettype($known_string)).' given', E_USER_WARNING);
+			return FALSE;
+		}
+		elseif ( ! is_string($user_string))
+		{
+			trigger_error('hash_equals(): Expected user_string to be a string, '.strtolower(gettype($user_string)).' given', E_USER_WARNING);
+			return FALSE;
+		}
+		elseif (($length = strlen($known_string)) !== strlen($user_string))
+		{
+			return FALSE;
+		}
+
+		$diff = 0;
+		for ($i = 0; $i < $length; $i++)
+		{
+			$diff |= ord($known_string[$i]) ^ ord($user_string[$i]);
+		}
+
+		return ($diff === 0);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if (is_php('5.5'))
+{
+	return;
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('hash_pbkdf2'))
+{
+	/**
+	 * hash_pbkdf2()
+	 *
+	 * @link	https://secure.php.net/hash_pbkdf2
+	 * @param	string	$algo
+	 * @param	string	$password
+	 * @param	string	$salt
+	 * @param	int	$iterations
+	 * @param	int	$length
+	 * @param	bool	$raw_output
+	 * @return	string
+	 */
+	function hash_pbkdf2($algo, $password, $salt, $iterations, $length = 0, $raw_output = FALSE)
+	{
+		if ( ! in_array(strtolower($algo), hash_algos(), TRUE))
+		{
+			trigger_error('hash_pbkdf2(): Unknown hashing algorithm: '.$algo, E_USER_WARNING);
+			return FALSE;
+		}
+
+		if (($type = gettype($iterations)) !== 'integer')
+		{
+			if ($type === 'object' && method_exists($iterations, '__toString'))
+			{
+				$iterations = (string) $iterations;
+			}
+
+			if (is_string($iterations) && is_numeric($iterations))
+			{
+				$iterations = (int) $iterations;
+			}
+			else
+			{
+				trigger_error('hash_pbkdf2() expects parameter 4 to be long, '.$type.' given', E_USER_WARNING);
+				return NULL;
+			}
+		}
+
+		if ($iterations < 1)
+		{
+			trigger_error('hash_pbkdf2(): Iterations must be a positive integer: '.$iterations, E_USER_WARNING);
+			return FALSE;
+		}
+
+		if (($type = gettype($length)) !== 'integer')
+		{
+			if ($type === 'object' && method_exists($length, '__toString'))
+			{
+				$length = (string) $length;
+			}
+
+			if (is_string($length) && is_numeric($length))
+			{
+				$length = (int) $length;
+			}
+			else
+			{
+				trigger_error('hash_pbkdf2() expects parameter 5 to be long, '.$type.' given', E_USER_WARNING);
+				return NULL;
+			}
+		}
+
+		if ($length < 0)
+		{
+			trigger_error('hash_pbkdf2(): Length must be greater than or equal to 0: '.$length, E_USER_WARNING);
+			return FALSE;
+		}
+
+		$hash_length = defined('MB_OVERLOAD_STRING')
+			? mb_strlen(hash($algo, NULL, TRUE), '8bit')
+			: strlen(hash($algo, NULL, TRUE));
+		empty($length) && $length = $hash_length;
+
+		// Pre-hash password inputs longer than the algorithm's block size
+		// (i.e. prepare HMAC key) to mitigate potential DoS attacks.
+		static $block_sizes;
+		empty($block_sizes) && $block_sizes = array(
+			'gost' => 32,
+			'haval128,3' => 128,
+			'haval160,3' => 128,
+			'haval192,3' => 128,
+			'haval224,3' => 128,
+			'haval256,3' => 128,
+			'haval128,4' => 128,
+			'haval160,4' => 128,
+			'haval192,4' => 128,
+			'haval224,4' => 128,
+			'haval256,4' => 128,
+			'haval128,5' => 128,
+			'haval160,5' => 128,
+			'haval192,5' => 128,
+			'haval224,5' => 128,
+			'haval256,5' => 128,
+			'md2' => 16,
+			'md4' => 64,
+			'md5' => 64,
+			'ripemd128' => 64,
+			'ripemd160' => 64,
+			'ripemd256' => 64,
+			'ripemd320' => 64,
+			'sha1' => 64,
+			'sha224' => 64,
+			'sha256' => 64,
+			'sha384' => 128,
+			'sha512' => 128,
+			'snefru' => 32,
+			'snefru256' => 32,
+			'tiger128,3' => 64,
+			'tiger160,3' => 64,
+			'tiger192,3' => 64,
+			'tiger128,4' => 64,
+			'tiger160,4' => 64,
+			'tiger192,4' => 64,
+			'whirlpool' => 64
+		);
+
+		if (isset($block_sizes[$algo], $password[$block_sizes[$algo]]))
+		{
+			$password = hash($algo, $password, TRUE);
+		}
+
+		$hash = '';
+		// Note: Blocks are NOT 0-indexed
+		for ($bc = (int) ceil($length / $hash_length), $bi = 1; $bi <= $bc; $bi++)
+		{
+			$key = $derived_key = hash_hmac($algo, $salt.pack('N', $bi), $password, TRUE);
+			for ($i = 1; $i < $iterations; $i++)
+			{
+				$derived_key ^= $key = hash_hmac($algo, $key, $password, TRUE);
+			}
+
+			$hash .= $derived_key;
+		}
+
+		// This is not RFC-compatible, but we're aiming for natural PHP compatibility
+		if ( ! $raw_output)
+		{
+			$hash = bin2hex($hash);
+		}
+
+		return defined('MB_OVERLOAD_STRING')
+			? mb_substr($hash, 0, $length, '8bit')
+			: substr($hash, 0, $length);
+	}
+}
diff --git a/system/core/compat/index.html b/system/core/compat/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/core/compat/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/core/compat/mbstring.php b/system/core/compat/mbstring.php
new file mode 100644
index 00000000..af73b8cc
--- /dev/null
+++ b/system/core/compat/mbstring.php
@@ -0,0 +1,149 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PHP ext/mbstring compatibility package
+ *
+ * @package		CodeIgniter
+ * @subpackage	CodeIgniter
+ * @category	Compatibility
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/
+ * @link		https://secure.php.net/mbstring
+ */
+
+// ------------------------------------------------------------------------
+
+if (MB_ENABLED === TRUE)
+{
+	return;
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('mb_strlen'))
+{
+	/**
+	 * mb_strlen()
+	 *
+	 * WARNING: This function WILL fall-back to strlen()
+	 * if iconv is not available!
+	 *
+	 * @link	https://secure.php.net/mb_strlen
+	 * @param	string	$str
+	 * @param	string	$encoding
+	 * @return	int
+	 */
+	function mb_strlen($str, $encoding = NULL)
+	{
+		if (ICONV_ENABLED === TRUE)
+		{
+			return iconv_strlen($str, isset($encoding) ? $encoding : config_item('charset'));
+		}
+
+		log_message('debug', 'Compatibility (mbstring): iconv_strlen() is not available, falling back to strlen().');
+		return strlen($str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('mb_strpos'))
+{
+	/**
+	 * mb_strpos()
+	 *
+	 * WARNING: This function WILL fall-back to strpos()
+	 * if iconv is not available!
+	 *
+	 * @link	https://secure.php.net/mb_strpos
+	 * @param	string	$haystack
+	 * @param	string	$needle
+	 * @param	int	$offset
+	 * @param	string	$encoding
+	 * @return	mixed
+	 */
+	function mb_strpos($haystack, $needle, $offset = 0, $encoding = NULL)
+	{
+		if (ICONV_ENABLED === TRUE)
+		{
+			return iconv_strpos($haystack, $needle, $offset, isset($encoding) ? $encoding : config_item('charset'));
+		}
+
+		log_message('debug', 'Compatibility (mbstring): iconv_strpos() is not available, falling back to strpos().');
+		return strpos($haystack, $needle, $offset);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('mb_substr'))
+{
+	/**
+	 * mb_substr()
+	 *
+	 * WARNING: This function WILL fall-back to substr()
+	 * if iconv is not available.
+	 *
+	 * @link	https://secure.php.net/mb_substr
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int 	$length
+	 * @param	string	$encoding
+	 * @return	string
+	 */
+	function mb_substr($str, $start, $length = NULL, $encoding = NULL)
+	{
+		if (ICONV_ENABLED === TRUE)
+		{
+			isset($encoding) OR $encoding = config_item('charset');
+			return iconv_substr(
+				$str,
+				$start,
+				isset($length) ? $length : iconv_strlen($str, $encoding), // NULL doesn't work
+				$encoding
+			);
+		}
+
+		log_message('debug', 'Compatibility (mbstring): iconv_substr() is not available, falling back to substr().');
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/core/compat/password.php b/system/core/compat/password.php
new file mode 100644
index 00000000..306300ed
--- /dev/null
+++ b/system/core/compat/password.php
@@ -0,0 +1,251 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PHP ext/standard/password compatibility package
+ *
+ * @package		CodeIgniter
+ * @subpackage	CodeIgniter
+ * @category	Compatibility
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/
+ * @link		https://secure.php.net/password
+ */
+
+// ------------------------------------------------------------------------
+
+if (is_php('5.5') OR ! defined('CRYPT_BLOWFISH') OR CRYPT_BLOWFISH !== 1 OR defined('HHVM_VERSION'))
+{
+	return;
+}
+
+// ------------------------------------------------------------------------
+
+defined('PASSWORD_BCRYPT') OR define('PASSWORD_BCRYPT', 1);
+defined('PASSWORD_DEFAULT') OR define('PASSWORD_DEFAULT', PASSWORD_BCRYPT);
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('password_get_info'))
+{
+	/**
+	 * password_get_info()
+	 *
+	 * @link	https://secure.php.net/password_get_info
+	 * @param	string	$hash
+	 * @return	array
+	 */
+	function password_get_info($hash)
+	{
+		return (strlen($hash) < 60 OR sscanf($hash, '$2y$%d', $hash) !== 1)
+			? array('algo' => 0, 'algoName' => 'unknown', 'options' => array())
+			: array('algo' => 1, 'algoName' => 'bcrypt', 'options' => array('cost' => $hash));
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('password_hash'))
+{
+	/**
+	 * password_hash()
+	 *
+	 * @link	https://secure.php.net/password_hash
+	 * @param	string	$password
+	 * @param	int	$algo
+	 * @param	array	$options
+	 * @return	mixed
+	 */
+	function password_hash($password, $algo, array $options = array())
+	{
+		static $func_overload;
+		isset($func_overload) OR $func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+
+		if ($algo !== 1)
+		{
+			trigger_error('password_hash(): Unknown hashing algorithm: '.(int) $algo, E_USER_WARNING);
+			return NULL;
+		}
+
+		if (isset($options['cost']) && ($options['cost'] < 4 OR $options['cost'] > 31))
+		{
+			trigger_error('password_hash(): Invalid bcrypt cost parameter specified: '.(int) $options['cost'], E_USER_WARNING);
+			return NULL;
+		}
+
+		if (isset($options['salt']) && ($saltlen = ($func_overload ? mb_strlen($options['salt'], '8bit') : strlen($options['salt']))) < 22)
+		{
+			trigger_error('password_hash(): Provided salt is too short: '.$saltlen.' expecting 22', E_USER_WARNING);
+			return NULL;
+		}
+		elseif ( ! isset($options['salt']))
+		{
+			if (function_exists('random_bytes'))
+			{
+				try
+				{
+					$options['salt'] = random_bytes(16);
+				}
+				catch (Exception $e)
+				{
+					log_message('error', 'compat/password: Error while trying to use random_bytes(): '.$e->getMessage());
+					return FALSE;
+				}
+			}
+			elseif (defined('MCRYPT_DEV_URANDOM'))
+			{
+				$options['salt'] = mcrypt_create_iv(16, MCRYPT_DEV_URANDOM);
+			}
+			elseif (DIRECTORY_SEPARATOR === '/' && (is_readable($dev = '/dev/arandom') OR is_readable($dev = '/dev/urandom')))
+			{
+				if (($fp = fopen($dev, 'rb')) === FALSE)
+				{
+					log_message('error', 'compat/password: Unable to open '.$dev.' for reading.');
+					return FALSE;
+				}
+
+				// Try not to waste entropy ...
+				stream_set_chunk_size($fp, 16);
+
+				$options['salt'] = '';
+				for ($read = 0; $read < 16; $read = ($func_overload) ? mb_strlen($options['salt'], '8bit') : strlen($options['salt']))
+				{
+					if (($read = fread($fp, 16 - $read)) === FALSE)
+					{
+						log_message('error', 'compat/password: Error while reading from '.$dev.'.');
+						return FALSE;
+					}
+					$options['salt'] .= $read;
+				}
+
+				fclose($fp);
+			}
+			elseif (function_exists('openssl_random_pseudo_bytes'))
+			{
+				$is_secure = NULL;
+				$options['salt'] = openssl_random_pseudo_bytes(16, $is_secure);
+				if ($is_secure !== TRUE)
+				{
+					log_message('error', 'compat/password: openssl_random_pseudo_bytes() set the $cryto_strong flag to FALSE');
+					return FALSE;
+				}
+			}
+			else
+			{
+				log_message('error', 'compat/password: No CSPRNG available.');
+				return FALSE;
+			}
+
+			$options['salt'] = str_replace('+', '.', rtrim(base64_encode($options['salt']), '='));
+		}
+		elseif ( ! preg_match('#^[a-zA-Z0-9./]+$#D', $options['salt']))
+		{
+			$options['salt'] = str_replace('+', '.', rtrim(base64_encode($options['salt']), '='));
+		}
+
+		isset($options['cost']) OR $options['cost'] = 10;
+
+		return (strlen($password = crypt($password, sprintf('$2y$%02d$%s', $options['cost'], $options['salt']))) === 60)
+			? $password
+			: FALSE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('password_needs_rehash'))
+{
+	/**
+	 * password_needs_rehash()
+	 *
+	 * @link	https://secure.php.net/password_needs_rehash
+	 * @param	string	$hash
+	 * @param	int	$algo
+	 * @param	array	$options
+	 * @return	bool
+	 */
+	function password_needs_rehash($hash, $algo, array $options = array())
+	{
+		$info = password_get_info($hash);
+
+		if ($algo !== $info['algo'])
+		{
+			return TRUE;
+		}
+		elseif ($algo === 1)
+		{
+			$options['cost'] = isset($options['cost']) ? (int) $options['cost'] : 10;
+			return ($info['options']['cost'] !== $options['cost']);
+		}
+
+		// Odd at first glance, but according to a comment in PHP's own unit tests,
+		// because it is an unknown algorithm - it's valid and therefore doesn't
+		// need rehashing.
+		return FALSE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('password_verify'))
+{
+	/**
+	 * password_verify()
+	 *
+	 * @link	https://secure.php.net/password_verify
+	 * @param	string	$password
+	 * @param	string	$hash
+	 * @return	bool
+	 */
+	function password_verify($password, $hash)
+	{
+		if (strlen($hash) !== 60 OR strlen($password = crypt($password, $hash)) !== 60)
+		{
+			return FALSE;
+		}
+
+		$compare = 0;
+		for ($i = 0; $i < 60; $i++)
+		{
+			$compare |= (ord($password[$i]) ^ ord($hash[$i]));
+		}
+
+		return ($compare === 0);
+	}
+}
diff --git a/system/core/compat/standard.php b/system/core/compat/standard.php
new file mode 100644
index 00000000..21feeb04
--- /dev/null
+++ b/system/core/compat/standard.php
@@ -0,0 +1,134 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PHP ext/standard compatibility package
+ *
+ * @package		CodeIgniter
+ * @subpackage	CodeIgniter
+ * @category	Compatibility
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/
+ */
+
+// ------------------------------------------------------------------------
+
+if (is_php('5.5'))
+{
+	return;
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('array_column'))
+{
+	/**
+	 * array_column()
+	 *
+	 * @link	https://secure.php.net/array_column
+	 * @param	array	$array
+	 * @param	mixed	$column_key
+	 * @param	mixed	$index_key
+	 * @return	array
+	 */
+	function array_column(array $array, $column_key, $index_key = NULL)
+	{
+		if ( ! in_array($type = gettype($column_key), array('integer', 'string', 'NULL'), TRUE))
+		{
+			if ($type === 'double')
+			{
+				$column_key = (int) $column_key;
+			}
+			elseif ($type === 'object' && method_exists($column_key, '__toString'))
+			{
+				$column_key = (string) $column_key;
+			}
+			else
+			{
+				trigger_error('array_column(): The column key should be either a string or an integer', E_USER_WARNING);
+				return FALSE;
+			}
+		}
+
+		if ( ! in_array($type = gettype($index_key), array('integer', 'string', 'NULL'), TRUE))
+		{
+			if ($type === 'double')
+			{
+				$index_key = (int) $index_key;
+			}
+			elseif ($type === 'object' && method_exists($index_key, '__toString'))
+			{
+				$index_key = (string) $index_key;
+			}
+			else
+			{
+				trigger_error('array_column(): The index key should be either a string or an integer', E_USER_WARNING);
+				return FALSE;
+			}
+		}
+
+		$result = array();
+		foreach ($array as &$a)
+		{
+			if ($column_key === NULL)
+			{
+				$value = $a;
+			}
+			elseif (is_array($a) && array_key_exists($column_key, $a))
+			{
+				$value = $a[$column_key];
+			}
+			else
+			{
+				continue;
+			}
+
+			if ($index_key === NULL OR ! array_key_exists($index_key, $a))
+			{
+				$result[] = $value;
+			}
+			else
+			{
+				$result[$a[$index_key]] = $value;
+			}
+		}
+
+		return $result;
+	}
+}
diff --git a/system/core/index.html b/system/core/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/core/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/DB.php b/system/database/DB.php
new file mode 100644
index 00000000..c42bb6b9
--- /dev/null
+++ b/system/database/DB.php
@@ -0,0 +1,221 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Initialize the database
+ *
+ * @category	Database
+ * @author	EllisLab Dev Team
+ * @link	https://codeigniter.com/userguide3/database/
+ *
+ * @param 	string|string[]	$params
+ * @param 	bool		$query_builder_override
+ *				Determines if query builder should be used or not
+ */
+function &DB($params = '', $query_builder_override = NULL)
+{
+	// Load the DB config file if a DSN string wasn't passed
+	if (is_string($params) && strpos($params, '://') === FALSE)
+	{
+		// Is the config file in the environment folder?
+		if ( ! file_exists($file_path = APPPATH.'config/'.ENVIRONMENT.'/database.php')
+			&& ! file_exists($file_path = APPPATH.'config/database.php'))
+		{
+			show_error('The configuration file database.php does not exist.');
+		}
+
+		include($file_path);
+
+		// Make packages contain database config files,
+		// given that the controller instance already exists
+		if (class_exists('CI_Controller', FALSE))
+		{
+			foreach (get_instance()->load->get_package_paths() as $path)
+			{
+				if ($path !== APPPATH)
+				{
+					if (file_exists($file_path = $path.'config/'.ENVIRONMENT.'/database.php'))
+					{
+						include($file_path);
+					}
+					elseif (file_exists($file_path = $path.'config/database.php'))
+					{
+						include($file_path);
+					}
+				}
+			}
+		}
+
+		if (empty($db))
+		{
+			show_error('No database connection settings were found in the database config file.');
+		}
+
+		if ($params !== '')
+		{
+			$active_group = $params;
+		}
+
+		if ( ! isset($active_group))
+		{
+			show_error('You have not specified a database connection group via $active_group in your config/database.php file.');
+		}
+		elseif ( ! isset($db[$active_group]))
+		{
+			show_error('You have specified an invalid database connection group ('.$active_group.') in your config/database.php file.');
+		}
+
+		$params = $db[$active_group];
+	}
+	elseif (is_string($params))
+	{
+		/**
+		 * Parse the URL from the DSN string
+		 * Database settings can be passed as discreet
+		 * parameters or as a data source name in the first
+		 * parameter. DSNs must have this prototype:
+		 * $dsn = 'driver://username:password@hostname/database';
+		 */
+		if (($dsn = @parse_url($params)) === FALSE)
+		{
+			show_error('Invalid DB Connection String');
+		}
+
+		$params = array(
+			'dbdriver'	=> $dsn['scheme'],
+			'hostname'	=> isset($dsn['host']) ? rawurldecode($dsn['host']) : '',
+			'port'		=> isset($dsn['port']) ? rawurldecode($dsn['port']) : '',
+			'username'	=> isset($dsn['user']) ? rawurldecode($dsn['user']) : '',
+			'password'	=> isset($dsn['pass']) ? rawurldecode($dsn['pass']) : '',
+			'database'	=> isset($dsn['path']) ? rawurldecode(substr($dsn['path'], 1)) : ''
+		);
+
+		// Were additional config items set?
+		if (isset($dsn['query']))
+		{
+			parse_str($dsn['query'], $extra);
+
+			foreach ($extra as $key => $val)
+			{
+				if (is_string($val) && in_array(strtoupper($val), array('TRUE', 'FALSE', 'NULL')))
+				{
+					$val = var_export($val, TRUE);
+				}
+
+				$params[$key] = $val;
+			}
+		}
+	}
+
+	// No DB specified yet? Beat them senseless...
+	if (empty($params['dbdriver']))
+	{
+		show_error('You have not selected a database type to connect to.');
+	}
+
+	// Load the DB classes. Note: Since the query builder class is optional
+	// we need to dynamically create a class that extends proper parent class
+	// based on whether we're using the query builder class or not.
+	if ($query_builder_override !== NULL)
+	{
+		$query_builder = $query_builder_override;
+	}
+	// Backwards compatibility work-around for keeping the
+	// $active_record config variable working. Should be
+	// removed in v3.1
+	elseif ( ! isset($query_builder) && isset($active_record))
+	{
+		$query_builder = $active_record;
+	}
+
+	require_once(BASEPATH.'database/DB_driver.php');
+
+	if ( ! isset($query_builder) OR $query_builder === TRUE)
+	{
+		require_once(BASEPATH.'database/DB_query_builder.php');
+		if ( ! class_exists('CI_DB', FALSE))
+		{
+			/**
+			 * CI_DB
+			 *
+			 * Acts as an alias for both CI_DB_driver and CI_DB_query_builder.
+			 *
+			 * @see	CI_DB_query_builder
+			 * @see	CI_DB_driver
+			 */
+			class CI_DB extends CI_DB_query_builder { }
+		}
+	}
+	elseif ( ! class_exists('CI_DB', FALSE))
+	{
+		/**
+		 * @ignore
+		 */
+		class CI_DB extends CI_DB_driver { }
+	}
+
+	// Load the DB driver
+	$driver_file = BASEPATH.'database/drivers/'.$params['dbdriver'].'/'.$params['dbdriver'].'_driver.php';
+	file_exists($driver_file) OR show_error('Invalid DB driver');
+	require_once($driver_file);
+
+	// Load the result classes as well
+	require_once(BASEPATH.'database/DB_result.php');
+	require_once(BASEPATH.'database/drivers/'.$params['dbdriver'].'/'.$params['dbdriver'].'_result.php');
+
+	// Instantiate the DB adapter
+	$driver = 'CI_DB_'.$params['dbdriver'].'_driver';
+	$DB = new $driver($params);
+
+	// Check for a subdriver
+	if ( ! empty($DB->subdriver))
+	{
+		$driver_file = BASEPATH.'database/drivers/'.$DB->dbdriver.'/subdrivers/'.$DB->dbdriver.'_'.$DB->subdriver.'_driver.php';
+
+		if (file_exists($driver_file))
+		{
+			require_once($driver_file);
+			$driver = 'CI_DB_'.$DB->dbdriver.'_'.$DB->subdriver.'_driver';
+			$DB = new $driver($params);
+		}
+	}
+
+	$DB->initialize();
+	return $DB;
+}
diff --git a/system/database/DB_cache.php b/system/database/DB_cache.php
new file mode 100644
index 00000000..2467a30f
--- /dev/null
+++ b/system/database/DB_cache.php
@@ -0,0 +1,221 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Database Cache Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_Cache {
+
+	/**
+	 * CI Singleton
+	 *
+	 * @var	object
+	 */
+	public $CI;
+
+	/**
+	 * Database object
+	 *
+	 * Allows passing of DB object so that multiple database connections
+	 * and returned DB objects can be supported.
+	 *
+	 * @var	object
+	 */
+	public $db;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	object	&$db
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		// Assign the main CI object to $this->CI and load the file helper since we use it a lot
+		$this->CI =& get_instance();
+		$this->db =& $db;
+		$this->CI->load->helper('file');
+
+		$this->check_path();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Cache Directory Path
+	 *
+	 * @param	string	$path	Path to the cache directory
+	 * @return	bool
+	 */
+	public function check_path($path = '')
+	{
+		if ($path === '')
+		{
+			if ($this->db->cachedir === '')
+			{
+				return $this->db->cache_off();
+			}
+
+			$path = $this->db->cachedir;
+		}
+
+		// Add a trailing slash to the path if needed
+		$path = realpath($path)
+			? rtrim(realpath($path), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR
+			: rtrim($path, '/').'/';
+
+		if ( ! is_dir($path))
+		{
+			log_message('debug', 'DB cache path error: '.$path);
+
+			// If the path is wrong we'll turn off caching
+			return $this->db->cache_off();
+		}
+
+		if ( ! is_really_writable($path))
+		{
+			log_message('debug', 'DB cache dir not writable: '.$path);
+
+			// If the path is not really writable we'll turn off caching
+			return $this->db->cache_off();
+		}
+
+		$this->db->cachedir = $path;
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Retrieve a cached query
+	 *
+	 * The URI being requested will become the name of the cache sub-folder.
+	 * An MD5 hash of the SQL statement will become the cache file name.
+	 *
+	 * @param	string	$sql
+	 * @return	string
+	 */
+	public function read($sql)
+	{
+		$segment_one = ($this->CI->uri->segment(1) == FALSE) ? 'default' : $this->CI->uri->segment(1);
+		$segment_two = ($this->CI->uri->segment(2) == FALSE) ? 'index' : $this->CI->uri->segment(2);
+		$filepath = $this->db->cachedir.$segment_one.'+'.$segment_two.'/'.md5($sql);
+
+		if ( ! is_file($filepath) OR FALSE === ($cachedata = file_get_contents($filepath)))
+		{
+			return FALSE;
+		}
+
+		return unserialize($cachedata);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Write a query to a cache file
+	 *
+	 * @param	string	$sql
+	 * @param	object	$object
+	 * @return	bool
+	 */
+	public function write($sql, $object)
+	{
+		$segment_one = ($this->CI->uri->segment(1) == FALSE) ? 'default' : $this->CI->uri->segment(1);
+		$segment_two = ($this->CI->uri->segment(2) == FALSE) ? 'index' : $this->CI->uri->segment(2);
+		$dir_path = $this->db->cachedir.$segment_one.'+'.$segment_two.'/';
+		$filename = md5($sql);
+
+		if ( ! is_dir($dir_path) && ! @mkdir($dir_path, 0750))
+		{
+			return FALSE;
+		}
+
+		if (write_file($dir_path.$filename, serialize($object)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		chmod($dir_path.$filename, 0640);
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete cache files within a particular directory
+	 *
+	 * @param	string	$segment_one
+	 * @param	string	$segment_two
+	 * @return	void
+	 */
+	public function delete($segment_one = '', $segment_two = '')
+	{
+		if ($segment_one === '')
+		{
+			$segment_one  = ($this->CI->uri->segment(1) == FALSE) ? 'default' : $this->CI->uri->segment(1);
+		}
+
+		if ($segment_two === '')
+		{
+			$segment_two = ($this->CI->uri->segment(2) == FALSE) ? 'index' : $this->CI->uri->segment(2);
+		}
+
+		$dir_path = $this->db->cachedir.$segment_one.'+'.$segment_two.'/';
+		delete_files($dir_path, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete all existing cache files
+	 *
+	 * @return	void
+	 */
+	public function delete_all()
+	{
+		delete_files($this->db->cachedir, TRUE, TRUE);
+	}
+
+}
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
new file mode 100644
index 00000000..cba96d9a
--- /dev/null
+++ b/system/database/DB_driver.php
@@ -0,0 +1,1938 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Database Driver Class
+ *
+ * This is the platform-independent base DB implementation class.
+ * This class will not be called directly. Rather, the adapter
+ * class for the specific database will extend and instantiate it.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+abstract class CI_DB_driver {
+
+	/**
+	 * Data Source Name / Connect string
+	 *
+	 * @var	string
+	 */
+	public $dsn;
+
+	/**
+	 * Username
+	 *
+	 * @var	string
+	 */
+	public $username;
+
+	/**
+	 * Password
+	 *
+	 * @var	string
+	 */
+	public $password;
+
+	/**
+	 * Hostname
+	 *
+	 * @var	string
+	 */
+	public $hostname;
+
+	/**
+	 * Database name
+	 *
+	 * @var	string
+	 */
+	public $database;
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver		= 'mysqli';
+
+	/**
+	 * Sub-driver
+	 *
+	 * @used-by	CI_DB_pdo_driver
+	 * @var	string
+	 */
+	public $subdriver;
+
+	/**
+	 * Table prefix
+	 *
+	 * @var	string
+	 */
+	public $dbprefix		= '';
+
+	/**
+	 * Character set
+	 *
+	 * @var	string
+	 */
+	public $char_set		= 'utf8';
+
+	/**
+	 * Collation
+	 *
+	 * @var	string
+	 */
+	public $dbcollat		= 'utf8_general_ci';
+
+	/**
+	 * Encryption flag/data
+	 *
+	 * @var	mixed
+	 */
+	public $encrypt			= FALSE;
+
+	/**
+	 * Swap Prefix
+	 *
+	 * @var	string
+	 */
+	public $swap_pre		= '';
+
+	/**
+	 * Database port
+	 *
+	 * @var	int
+	 */
+	public $port			= NULL;
+
+	/**
+	 * Persistent connection flag
+	 *
+	 * @var	bool
+	 */
+	public $pconnect		= FALSE;
+
+	/**
+	 * Connection ID
+	 *
+	 * @var	object|resource
+	 */
+	public $conn_id			= FALSE;
+
+	/**
+	 * Result ID
+	 *
+	 * @var	object|resource
+	 */
+	public $result_id		= FALSE;
+
+	/**
+	 * Debug flag
+	 *
+	 * Whether to display error messages.
+	 *
+	 * @var	bool
+	 */
+	public $db_debug		= FALSE;
+
+	/**
+	 * Benchmark time
+	 *
+	 * @var	int
+	 */
+	public $benchmark		= 0;
+
+	/**
+	 * Executed queries count
+	 *
+	 * @var	int
+	 */
+	public $query_count		= 0;
+
+	/**
+	 * Bind marker
+	 *
+	 * Character used to identify values in a prepared statement.
+	 *
+	 * @var	string
+	 */
+	public $bind_marker		= '?';
+
+	/**
+	 * Save queries flag
+	 *
+	 * Whether to keep an in-memory history of queries for debugging purposes.
+	 *
+	 * @var	bool
+	 */
+	public $save_queries		= TRUE;
+
+	/**
+	 * Queries list
+	 *
+	 * @see	CI_DB_driver::$save_queries
+	 * @var	string[]
+	 */
+	public $queries			= array();
+
+	/**
+	 * Query times
+	 *
+	 * A list of times that queries took to execute.
+	 *
+	 * @var	array
+	 */
+	public $query_times		= array();
+
+	/**
+	 * Data cache
+	 *
+	 * An internal generic value cache.
+	 *
+	 * @var	array
+	 */
+	public $data_cache		= array();
+
+	/**
+	 * Transaction enabled flag
+	 *
+	 * @var	bool
+	 */
+	public $trans_enabled		= TRUE;
+
+	/**
+	 * Strict transaction mode flag
+	 *
+	 * @var	bool
+	 */
+	public $trans_strict		= TRUE;
+
+	/**
+	 * Transaction depth level
+	 *
+	 * @var	int
+	 */
+	protected $_trans_depth		= 0;
+
+	/**
+	 * Transaction status flag
+	 *
+	 * Used with transactions to determine if a rollback should occur.
+	 *
+	 * @var	bool
+	 */
+	protected $_trans_status	= TRUE;
+
+	/**
+	 * Transaction failure flag
+	 *
+	 * Used with transactions to determine if a transaction has failed.
+	 *
+	 * @var	bool
+	 */
+	protected $_trans_failure	= FALSE;
+
+	/**
+	 * Cache On flag
+	 *
+	 * @var	bool
+	 */
+	public $cache_on		= FALSE;
+
+	/**
+	 * Cache directory path
+	 *
+	 * @var	bool
+	 */
+	public $cachedir		= '';
+
+	/**
+	 * Cache auto-delete flag
+	 *
+	 * @var	bool
+	 */
+	public $cache_autodel		= FALSE;
+
+	/**
+	 * DB Cache object
+	 *
+	 * @see	CI_DB_cache
+	 * @var	object
+	 */
+	public $CACHE;
+
+	/**
+	 * Protect identifiers flag
+	 *
+	 * @var	bool
+	 */
+	protected $_protect_identifiers		= TRUE;
+
+	/**
+	 * List of reserved identifiers
+	 *
+	 * Identifiers that must NOT be escaped.
+	 *
+	 * @var	string[]
+	 */
+	protected $_reserved_identifiers	= array('*');
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '"';
+
+	/**
+	 * ESCAPE statement string
+	 *
+	 * @var	string
+	 */
+	protected $_like_escape_str = " ESCAPE '%s' ";
+
+	/**
+	 * ESCAPE character
+	 *
+	 * @var	string
+	 */
+	protected $_like_escape_chr = '!';
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RAND()', 'RAND(%d)');
+
+	/**
+	 * COUNT string
+	 *
+	 * @used-by	CI_DB_driver::count_all()
+	 * @used-by	CI_DB_query_builder::count_all_results()
+	 *
+	 * @var	string
+	 */
+	protected $_count_string = 'SELECT COUNT(*) AS ';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		if (is_array($params))
+		{
+			foreach ($params as $key => $val)
+			{
+				$this->$key = $val;
+			}
+		}
+
+		log_message('info', 'Database Driver Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize Database Settings
+	 *
+	 * @return	void
+	 * @throws	RuntimeException	In case of failure
+	 */
+	public function initialize()
+	{
+		/* If an established connection is available, then there's
+		 * no need to connect and select the database.
+		 *
+		 * Depending on the database driver, conn_id can be either
+		 * boolean TRUE, a resource or an object.
+		 */
+		if ($this->conn_id)
+		{
+			return;
+		}
+
+		// ----------------------------------------------------------------
+
+		// Connect to the database and set the connection ID
+		$this->conn_id = $this->db_connect($this->pconnect);
+
+		// No connection resource? Check if there is a failover else throw an error
+		if ( ! $this->conn_id)
+		{
+			// Check if there is a failover set
+			if ( ! empty($this->failover) && is_array($this->failover))
+			{
+				// Go over all the failovers
+				foreach ($this->failover as $failover)
+				{
+					// Replace the current settings with those of the failover
+					foreach ($failover as $key => $val)
+					{
+						$this->$key = $val;
+					}
+
+					// Try to connect
+					$this->conn_id = $this->db_connect($this->pconnect);
+
+					// If a connection is made break the foreach loop
+					if ($this->conn_id)
+					{
+						break;
+					}
+				}
+			}
+
+			// We still don't have a connection?
+			if ( ! $this->conn_id)
+			{
+				throw new RuntimeException('Unable to connect to the database.');
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * DB connect
+	 *
+	 * This is just a dummy method that all drivers will override.
+	 *
+	 * @return	mixed
+	 */
+	public function db_connect()
+	{
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Persistent database connection
+	 *
+	 * @return	mixed
+	 */
+	public function db_pconnect()
+	{
+		return $this->db_connect(TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout.
+	 *
+	 * This is just a dummy method to allow drivers without such
+	 * functionality to not declare it, while others will override it.
+	 *
+	 * @return	void
+	 */
+	public function reconnect()
+	{
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select database
+	 *
+	 * This is just a dummy method to allow drivers without such
+	 * functionality to not declare it, while others will override it.
+	 *
+	 * @return	bool
+	 */
+	public function db_select()
+	{
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Last error
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => NULL, 'message' => NULL);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The name of the platform in use (mysql, mssql, etc...)
+	 *
+	 * @return	string
+	 */
+	public function platform()
+	{
+		return $this->dbdriver;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * Returns a string containing the version of the database being used.
+	 * Most drivers will override this method.
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if (FALSE === ($sql = $this->_version()))
+		{
+			return ($this->db_debug) ? $this->display_error('db_unsupported_function') : FALSE;
+		}
+
+		$query = $this->query($sql)->row();
+		return $this->data_cache['version'] = $query->ver;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Version number query string
+	 *
+	 * @return	string
+	 */
+	protected function _version()
+	{
+		return 'SELECT VERSION() AS ver';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * Accepts an SQL string as input and returns a result object upon
+	 * successful execution of a "read" type query. Returns boolean TRUE
+	 * upon successful execution of a "write" type query. Returns boolean
+	 * FALSE upon failure, and if the $db_debug variable is set to TRUE
+	 * will raise an error.
+	 *
+	 * @param	string	$sql
+	 * @param	array	$binds = FALSE		An array of binding data
+	 * @param	bool	$return_object = NULL
+	 * @return	mixed
+	 */
+	public function query($sql, $binds = FALSE, $return_object = NULL)
+	{
+		if ($sql === '')
+		{
+			log_message('error', 'Invalid query: '.$sql);
+			return ($this->db_debug) ? $this->display_error('db_invalid_query') : FALSE;
+		}
+		elseif ( ! is_bool($return_object))
+		{
+			$return_object = ! $this->is_write_type($sql);
+		}
+
+		// Verify table prefix and replace if necessary
+		if ($this->dbprefix !== '' && $this->swap_pre !== '' && $this->dbprefix !== $this->swap_pre)
+		{
+			$sql = preg_replace('/(\W)'.$this->swap_pre.'(\S+?)/', '\\1'.$this->dbprefix.'\\2', $sql);
+		}
+
+		// Compile binds if needed
+		if ($binds !== FALSE)
+		{
+			$sql = $this->compile_binds($sql, $binds);
+		}
+
+		// Is query caching enabled? If the query is a "read type"
+		// we will load the caching class and return the previously
+		// cached query if it exists
+		if ($this->cache_on === TRUE && $return_object === TRUE && $this->_cache_init())
+		{
+			if (FALSE !== ($cache = $this->CACHE->read($sql)))
+			{
+				return $cache;
+			}
+		}
+
+		// Save the query for debugging
+		if ($this->save_queries === TRUE)
+		{
+			$this->queries[] = $sql;
+		}
+
+		// Start the Query Timer
+		$time_start = microtime(TRUE);
+
+		// Run the Query
+		if (FALSE === ($this->result_id = $this->simple_query($sql)))
+		{
+			if ($this->save_queries === TRUE)
+			{
+				$this->query_times[] = 0;
+			}
+
+			// This will trigger a rollback if transactions are being used
+			if ($this->_trans_depth !== 0)
+			{
+				$this->_trans_status = FALSE;
+			}
+
+			// Grab the error now, as we might run some additional queries before displaying the error
+			$error = $this->error();
+
+			// Log errors
+			log_message('error', 'Query error: '.$error['message'].' - Invalid query: '.$sql);
+
+			if ($this->db_debug)
+			{
+				// We call this function in order to roll-back queries
+				// if transactions are enabled. If we don't call this here
+				// the error message will trigger an exit, causing the
+				// transactions to remain in limbo.
+				while ($this->_trans_depth !== 0)
+				{
+					$trans_depth = $this->_trans_depth;
+					$this->trans_complete();
+					if ($trans_depth === $this->_trans_depth)
+					{
+						log_message('error', 'Database: Failure during an automated transaction commit/rollback!');
+						break;
+					}
+				}
+
+				// Display errors
+				return $this->display_error(array('Error Number: '.$error['code'], $error['message'], $sql));
+			}
+
+			return FALSE;
+		}
+
+		// Stop and aggregate the query time results
+		$time_end = microtime(TRUE);
+		$this->benchmark += $time_end - $time_start;
+
+		if ($this->save_queries === TRUE)
+		{
+			$this->query_times[] = $time_end - $time_start;
+		}
+
+		// Increment the query counter
+		$this->query_count++;
+
+		// Will we have a result object instantiated? If not - we'll simply return TRUE
+		if ($return_object !== TRUE)
+		{
+			// If caching is enabled we'll auto-cleanup any existing files related to this particular URI
+			if ($this->cache_on === TRUE && $this->cache_autodel === TRUE && $this->_cache_init())
+			{
+				$this->CACHE->delete();
+			}
+
+			return TRUE;
+		}
+
+		// Instantiate the driver-specific result class
+		$driver	= 'CI_DB_'.$this->dbdriver.'_result';
+		$RES    = new $driver($this);
+
+		// Is query caching enabled? If so, we'll serialize the
+		// result object and save it to a cache file.
+		if ($this->cache_on === TRUE && $this->_cache_init())
+		{
+			// We'll create a new instance of the result object
+			// only without the platform specific driver since
+			// we can't use it with cached data (the query result
+			// resource ID won't be any good once we've cached the
+			// result object, so we'll have to compile the data
+			// and save it)
+			$CR = new CI_DB_result($this);
+			$CR->result_object	= $RES->result_object();
+			$CR->result_array	= $RES->result_array();
+			$CR->num_rows		= $RES->num_rows();
+
+			// Reset these since cached objects can not utilize resource IDs.
+			$CR->conn_id		= NULL;
+			$CR->result_id		= NULL;
+
+			$this->CACHE->write($sql, $CR);
+		}
+
+		return $RES;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Simple Query
+	 * This is a simplified version of the query() function. Internally
+	 * we only use it when running transaction commands since they do
+	 * not require all the features of the main query() function.
+	 *
+	 * @param	string	the sql query
+	 * @return	mixed
+	 */
+	public function simple_query($sql)
+	{
+		empty($this->conn_id) && $this->initialize();
+		return $this->_execute($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Disable Transactions
+	 * This permits transactions to be disabled at run-time.
+	 *
+	 * @return	void
+	 */
+	public function trans_off()
+	{
+		$this->trans_enabled = FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Enable/disable Transaction Strict Mode
+	 *
+	 * When strict mode is enabled, if you are running multiple groups of
+	 * transactions, if one group fails all subsequent groups will be
+	 * rolled back.
+	 *
+	 * If strict mode is disabled, each group is treated autonomously,
+	 * meaning a failure of one group will not affect any others
+	 *
+	 * @param	bool	$mode = TRUE
+	 * @return	void
+	 */
+	public function trans_strict($mode = TRUE)
+	{
+		$this->trans_strict = is_bool($mode) ? $mode : TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Start Transaction
+	 *
+	 * @param	bool	$test_mode = FALSE
+	 * @return	bool
+	 */
+	public function trans_start($test_mode = FALSE)
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return FALSE;
+		}
+
+		return $this->trans_begin($test_mode);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Complete Transaction
+	 *
+	 * @return	bool
+	 */
+	public function trans_complete()
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return FALSE;
+		}
+
+		// The query() function will set this flag to FALSE in the event that a query failed
+		if ($this->_trans_status === FALSE OR $this->_trans_failure === TRUE)
+		{
+			$this->trans_rollback();
+
+			// If we are NOT running in strict mode, we will reset
+			// the _trans_status flag so that subsequent groups of
+			// transactions will be permitted.
+			if ($this->trans_strict === FALSE)
+			{
+				$this->_trans_status = TRUE;
+			}
+
+			log_message('debug', 'DB Transaction Failure');
+			return FALSE;
+		}
+
+		return $this->trans_commit();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Lets you retrieve the transaction flag to determine if it has failed
+	 *
+	 * @return	bool
+	 */
+	public function trans_status()
+	{
+		return $this->_trans_status;
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns TRUE if a transaction is currently active
+	 *
+	 * @return	bool
+	 */
+	public function trans_active()
+	{
+		return (bool) $this->_trans_depth;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @param	bool	$test_mode
+	 * @return	bool
+	 */
+	public function trans_begin($test_mode = FALSE)
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return FALSE;
+		}
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		elseif ($this->_trans_depth > 0)
+		{
+			$this->_trans_depth++;
+			return TRUE;
+		}
+
+		// Reset the transaction failure flag.
+		// If the $test_mode flag is set to TRUE transactions will be rolled back
+		// even if the queries produce a successful result.
+		$this->_trans_failure = ($test_mode === TRUE);
+
+		if ($this->_trans_begin())
+		{
+			$this->_trans_status = TRUE;
+			$this->_trans_depth++;
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	public function trans_commit()
+	{
+		if ( ! $this->trans_enabled OR $this->_trans_depth === 0)
+		{
+			return FALSE;
+		}
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		elseif ($this->_trans_depth > 1 OR $this->_trans_commit())
+		{
+			$this->_trans_depth--;
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	public function trans_rollback()
+	{
+		if ( ! $this->trans_enabled OR $this->_trans_depth === 0)
+		{
+			return FALSE;
+		}
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		elseif ($this->_trans_depth > 1 OR $this->_trans_rollback())
+		{
+			$this->_trans_depth--;
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile Bindings
+	 *
+	 * @param	string	the sql statement
+	 * @param	array	an array of bind data
+	 * @return	string
+	 */
+	public function compile_binds($sql, $binds)
+	{
+		if (empty($this->bind_marker) OR strpos($sql, $this->bind_marker) === FALSE)
+		{
+			return $sql;
+		}
+		elseif ( ! is_array($binds))
+		{
+			$binds = array($binds);
+			$bind_count = 1;
+		}
+		else
+		{
+			// Make sure we're using numeric keys
+			$binds = array_values($binds);
+			$bind_count = count($binds);
+		}
+
+		// We'll need the marker length later
+		$ml = strlen($this->bind_marker);
+
+		// Make sure not to replace a chunk inside a string that happens to match the bind marker
+		if ($c = preg_match_all("/'[^']*'|\"[^\"]*\"/i", $sql, $matches))
+		{
+			$c = preg_match_all('/'.preg_quote($this->bind_marker, '/').'/i',
+				str_replace($matches[0],
+					str_replace($this->bind_marker, str_repeat(' ', $ml), $matches[0]),
+					$sql, $c),
+				$matches, PREG_OFFSET_CAPTURE);
+
+			// Bind values' count must match the count of markers in the query
+			if ($bind_count !== $c)
+			{
+				return $sql;
+			}
+		}
+		elseif (($c = preg_match_all('/'.preg_quote($this->bind_marker, '/').'/i', $sql, $matches, PREG_OFFSET_CAPTURE)) !== $bind_count)
+		{
+			return $sql;
+		}
+
+		do
+		{
+			$c--;
+			$escaped_value = $this->escape($binds[$c]);
+			if (is_array($escaped_value))
+			{
+				$escaped_value = '('.implode(',', $escaped_value).')';
+			}
+			$sql = substr_replace($sql, $escaped_value, $matches[0][$c][1], $ml);
+		}
+		while ($c !== 0);
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determines if a query is a "write" type.
+	 *
+	 * @param	string	An SQL query string
+	 * @return	bool
+	 */
+	public function is_write_type($sql)
+	{
+		return (bool) preg_match('/^\s*"?(SET|INSERT|UPDATE|DELETE|REPLACE|CREATE|DROP|TRUNCATE|LOAD|COPY|ALTER|RENAME|GRANT|REVOKE|LOCK|UNLOCK|REINDEX|MERGE)\s/i', $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Calculate the aggregate query elapsed time
+	 *
+	 * @param	int	The number of decimal places
+	 * @return	string
+	 */
+	public function elapsed_time($decimals = 6)
+	{
+		return number_format($this->benchmark, $decimals);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the total number of queries
+	 *
+	 * @return	int
+	 */
+	public function total_queries()
+	{
+		return $this->query_count;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the last query that was executed
+	 *
+	 * @return	string
+	 */
+	public function last_query()
+	{
+		return end($this->queries);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Smart" Escape String
+	 *
+	 * Escapes data based on type
+	 * Sets boolean and null types
+	 *
+	 * @param	string
+	 * @return	mixed
+	 */
+	public function escape($str)
+	{
+		if (is_array($str))
+		{
+			$str = array_map(array(&$this, 'escape'), $str);
+			return $str;
+		}
+		elseif (is_string($str) OR (is_object($str) && method_exists($str, '__toString')))
+		{
+			return "'".$this->escape_str($str)."'";
+		}
+		elseif (is_bool($str))
+		{
+			return ($str === FALSE) ? 0 : 1;
+		}
+		elseif ($str === NULL)
+		{
+			return 'NULL';
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape String
+	 *
+	 * @param	string|string[]	$str	Input string
+	 * @param	bool	$like	Whether or not the string will be used in a LIKE condition
+	 * @return	string
+	 */
+	public function escape_str($str, $like = FALSE)
+	{
+		if (is_array($str))
+		{
+			foreach ($str as $key => $val)
+			{
+				$str[$key] = $this->escape_str($val, $like);
+			}
+
+			return $str;
+		}
+
+		$str = $this->_escape_str($str);
+
+		// escape LIKE condition wildcards
+		if ($like === TRUE)
+		{
+			return str_replace(
+				array($this->_like_escape_chr, '%', '_'),
+				array($this->_like_escape_chr.$this->_like_escape_chr, $this->_like_escape_chr.'%', $this->_like_escape_chr.'_'),
+				$str
+			);
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape LIKE String
+	 *
+	 * Calls the individual driver for platform
+	 * specific escaping for LIKE conditions
+	 *
+	 * @param	string|string[]
+	 * @return	mixed
+	 */
+	public function escape_like_str($str)
+	{
+		return $this->escape_str($str, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		return str_replace("'", "''", remove_invisible_characters($str, FALSE));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Primary
+	 *
+	 * Retrieves the primary key. It assumes that the row in the first
+	 * position is the primary key
+	 *
+	 * @param	string	$table	Table name
+	 * @return	string
+	 */
+	public function primary($table)
+	{
+		$fields = $this->list_fields($table);
+		return is_array($fields) ? current($fields) : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Count All" query
+	 *
+	 * Generates a platform-specific query string that counts all records in
+	 * the specified database
+	 *
+	 * @param	string
+	 * @return	int
+	 */
+	public function count_all($table = '')
+	{
+		if ($table === '')
+		{
+			return 0;
+		}
+
+		$query = $this->query($this->_count_string.$this->escape_identifiers('numrows').' FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE));
+		if ($query->num_rows() === 0)
+		{
+			return 0;
+		}
+
+		$query = $query->row();
+		$this->_reset_select();
+		return (int) $query->numrows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an array of table names
+	 *
+	 * @param	string	$constrain_by_prefix = FALSE
+	 * @return	array
+	 */
+	public function list_tables($constrain_by_prefix = FALSE)
+	{
+		// Is there a cached result?
+		if (isset($this->data_cache['table_names']))
+		{
+			return $this->data_cache['table_names'];
+		}
+
+		if (FALSE === ($sql = $this->_list_tables($constrain_by_prefix)))
+		{
+			return ($this->db_debug) ? $this->display_error('db_unsupported_function') : FALSE;
+		}
+
+		$this->data_cache['table_names'] = array();
+		$query = $this->query($sql);
+
+		foreach ($query->result_array() as $row)
+		{
+			// Do we know from which column to get the table name?
+			if ( ! isset($key))
+			{
+				if (isset($row['table_name']))
+				{
+					$key = 'table_name';
+				}
+				elseif (isset($row['TABLE_NAME']))
+				{
+					$key = 'TABLE_NAME';
+				}
+				else
+				{
+					/* We have no other choice but to just get the first element's key.
+					 * Due to array_shift() accepting its argument by reference, if
+					 * E_STRICT is on, this would trigger a warning. So we'll have to
+					 * assign it first.
+					 */
+					$key = array_keys($row);
+					$key = array_shift($key);
+				}
+			}
+
+			$this->data_cache['table_names'][] = $row[$key];
+		}
+
+		return $this->data_cache['table_names'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determine if a particular table exists
+	 *
+	 * @param	string	$table_name
+	 * @return	bool
+	 */
+	public function table_exists($table_name)
+	{
+		return in_array($this->protect_identifiers($table_name, TRUE, FALSE, FALSE), $this->list_tables());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * @param	string	$table	Table name
+	 * @return	array
+	 */
+	public function list_fields($table)
+	{
+		if (FALSE === ($sql = $this->_list_columns($table)))
+		{
+			return ($this->db_debug) ? $this->display_error('db_unsupported_function') : FALSE;
+		}
+
+		$query = $this->query($sql);
+		$fields = array();
+
+		foreach ($query->result_array() as $row)
+		{
+			// Do we know from where to get the column's name?
+			if ( ! isset($key))
+			{
+				if (isset($row['column_name']))
+				{
+					$key = 'column_name';
+				}
+				elseif (isset($row['COLUMN_NAME']))
+				{
+					$key = 'COLUMN_NAME';
+				}
+				else
+				{
+					// We have no other choice but to just get the first element's key.
+					$key = key($row);
+				}
+			}
+
+			$fields[] = $row[$key];
+		}
+
+		return $fields;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determine if a particular field exists
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	public function field_exists($field_name, $table_name)
+	{
+		return in_array($field_name, $this->list_fields($table_name));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table	the table name
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$query = $this->query($this->_field_data($this->protect_identifiers($table, TRUE, NULL, FALSE)));
+		return ($query) ? $query->field_data() : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape the SQL Identifiers
+	 *
+	 * This function escapes column and table names
+	 *
+	 * @param	mixed	$item	Identifier to escape
+	 * @param	bool	$split	Whether to split identifiers when a dot is encountered
+	 * @return	mixed
+	 */
+	public function escape_identifiers($item, $split = TRUE)
+	{
+		if ($this->_escape_char === '' OR empty($item) OR in_array($item, $this->_reserved_identifiers))
+		{
+			return $item;
+		}
+		elseif (is_array($item))
+		{
+			foreach ($item as $key => $value)
+			{
+				$item[$key] = $this->escape_identifiers($value);
+			}
+
+			return $item;
+		}
+		// Avoid breaking functions and literal values inside queries
+		elseif (ctype_digit($item) OR $item[0] === "'" OR ($this->_escape_char !== '"' && $item[0] === '"') OR strpos($item, '(') !== FALSE)
+		{
+			return $item;
+		}
+
+		static $preg_ec;
+
+		if (empty($preg_ec))
+		{
+			if (is_array($this->_escape_char))
+			{
+				$preg_ec = array(
+					preg_quote($this->_escape_char[0]),
+					preg_quote($this->_escape_char[1]),
+					$this->_escape_char[0],
+					$this->_escape_char[1]
+				);
+			}
+			else
+			{
+				$preg_ec[0] = $preg_ec[1] = preg_quote($this->_escape_char);
+				$preg_ec[2] = $preg_ec[3] = $this->_escape_char;
+			}
+		}
+
+		foreach ($this->_reserved_identifiers as $id)
+		{
+			if (strpos($item, '.'.$id) !== FALSE)
+			{
+				return preg_replace('#'.$preg_ec[0].'?([^'.$preg_ec[1].'\.]+)'.$preg_ec[1].'?\.#i', $preg_ec[2].'$1'.$preg_ec[3].'.', $item);
+			}
+		}
+
+		$dot = ($split !== FALSE) ? '\.' : '';
+
+		return preg_replace('#'.$preg_ec[0].'?([^'.$preg_ec[1].$dot.']+)'.$preg_ec[1].'?(\.)?#i', $preg_ec[2].'$1'.$preg_ec[3].'$2', $item);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate an insert string
+	 *
+	 * @param	string	the table upon which the query will be performed
+	 * @param	array	an associative array data of key/values
+	 * @return	string
+	 */
+	public function insert_string($table, $data)
+	{
+		$fields = $values = array();
+
+		foreach ($data as $key => $val)
+		{
+			$fields[] = $this->escape_identifiers($key);
+			$values[] = $this->escape($val);
+		}
+
+		return $this->_insert($this->protect_identifiers($table, TRUE, NULL, FALSE), $fields, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data
+	 *
+	 * @param	string	the table name
+	 * @param	array	the insert keys
+	 * @param	array	the insert values
+	 * @return	string
+	 */
+	protected function _insert($table, $keys, $values)
+	{
+		return 'INSERT INTO '.$table.' ('.implode(', ', $keys).') VALUES ('.implode(', ', $values).')';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate an update string
+	 *
+	 * @param	string	the table upon which the query will be performed
+	 * @param	array	an associative array data of key/values
+	 * @param	mixed	the "where" statement
+	 * @return	string
+	 */
+	public function update_string($table, $data, $where)
+	{
+		if (empty($where))
+		{
+			return FALSE;
+		}
+
+		$this->where($where);
+
+		$fields = array();
+		foreach ($data as $key => $val)
+		{
+			$fields[$this->protect_identifiers($key)] = $this->escape($val);
+		}
+
+		$sql = $this->_update($this->protect_identifiers($table, TRUE, NULL, FALSE), $fields);
+		$this->_reset_write();
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	the table name
+	 * @param	array	the update data
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		foreach ($values as $key => $val)
+		{
+			$valstr[] = $key.' = '.$val;
+		}
+
+		return 'UPDATE '.$table.' SET '.implode(', ', $valstr)
+			.$this->_compile_wh('qb_where')
+			.$this->_compile_order_by()
+			.($this->qb_limit !== FALSE ? ' LIMIT '.$this->qb_limit : '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Tests whether the string has an SQL operator
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	protected function _has_operator($str)
+	{
+		return (bool) preg_match('/(<|>|!|=|\sIS NULL|\sIS NOT NULL|\sEXISTS|\sBETWEEN|\sLIKE|\sIN\s*\(|\s)/i', trim($str));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the SQL string operator
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _get_operator($str)
+	{
+		static $_operators;
+
+		if (empty($_operators))
+		{
+			$_les = ($this->_like_escape_str !== '')
+				? '\s+'.preg_quote(trim(sprintf($this->_like_escape_str, $this->_like_escape_chr)), '/')
+				: '';
+			$_operators = array(
+				'\s*(?:<|>|!)?=\s*',             // =, <=, >=, !=
+				'\s*<>?\s*',                     // <, <>
+				'\s*>\s*',                       // >
+				'\s+IS NULL',                    // IS NULL
+				'\s+IS NOT NULL',                // IS NOT NULL
+				'\s+EXISTS\s*\(.*\)',        // EXISTS(sql)
+				'\s+NOT EXISTS\s*\(.*\)',    // NOT EXISTS(sql)
+				'\s+BETWEEN\s+',                 // BETWEEN value AND value
+				'\s+IN\s*\(.*\)',            // IN(list)
+				'\s+NOT IN\s*\(.*\)',        // NOT IN (list)
+				'\s+LIKE\s+\S.*('.$_les.')?',    // LIKE 'expr'[ ESCAPE '%s']
+				'\s+NOT LIKE\s+\S.*('.$_les.')?' // NOT LIKE 'expr'[ ESCAPE '%s']
+			);
+
+		}
+
+		return preg_match('/'.implode('|', $_operators).'/i', $str, $match)
+			? $match[0] : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Enables a native PHP function to be run, using a platform agnostic wrapper.
+	 *
+	 * @param	string	$function	Function name
+	 * @return	mixed
+	 */
+	public function call_function($function)
+	{
+		$driver = ($this->dbdriver === 'postgre') ? 'pg_' : $this->dbdriver.'_';
+
+		if (FALSE === strpos($driver, $function))
+		{
+			$function = $driver.$function;
+		}
+
+		if ( ! function_exists($function))
+		{
+			return ($this->db_debug) ? $this->display_error('db_unsupported_function') : FALSE;
+		}
+
+		return (func_num_args() > 1)
+			? call_user_func_array($function, array_slice(func_get_args(), 1))
+			: call_user_func($function);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Cache Directory Path
+	 *
+	 * @param	string	the path to the cache directory
+	 * @return	void
+	 */
+	public function cache_set_path($path = '')
+	{
+		$this->cachedir = $path;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Enable Query Caching
+	 *
+	 * @return	bool	cache_on value
+	 */
+	public function cache_on()
+	{
+		return $this->cache_on = TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Disable Query Caching
+	 *
+	 * @return	bool	cache_on value
+	 */
+	public function cache_off()
+	{
+		return $this->cache_on = FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete the cache files associated with a particular URI
+	 *
+	 * @param	string	$segment_one = ''
+	 * @param	string	$segment_two = ''
+	 * @return	bool
+	 */
+	public function cache_delete($segment_one = '', $segment_two = '')
+	{
+		return $this->_cache_init()
+			? $this->CACHE->delete($segment_one, $segment_two)
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete All cache files
+	 *
+	 * @return	bool
+	 */
+	public function cache_delete_all()
+	{
+		return $this->_cache_init()
+			? $this->CACHE->delete_all()
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize the Cache Class
+	 *
+	 * @return	bool
+	 */
+	protected function _cache_init()
+	{
+		if ( ! class_exists('CI_DB_Cache', FALSE))
+		{
+			require_once(BASEPATH.'database/DB_cache.php');
+		}
+		elseif (is_object($this->CACHE))
+		{
+			return TRUE;
+		}
+
+		$this->CACHE = new CI_DB_Cache($this); // pass db object to support multiple db connections and returned db objects
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	public function close()
+	{
+		if ($this->conn_id)
+		{
+			$this->_close();
+			$this->conn_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * This method would be overridden by most of the drivers.
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		$this->conn_id = FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Display an error message
+	 *
+	 * @param	string	the error message
+	 * @param	string	any "swap" values
+	 * @param	bool	whether to localize the message
+	 * @return	string	sends the application/views/errors/error_db.php template
+	 */
+	public function display_error($error = '', $swap = '', $native = FALSE)
+	{
+		$LANG =& load_class('Lang', 'core');
+		$LANG->load('db');
+
+		$heading = $LANG->line('db_error_heading');
+
+		if ($native === TRUE)
+		{
+			$message = (array) $error;
+		}
+		else
+		{
+			$message = is_array($error) ? $error : array(str_replace('%s', $swap, $LANG->line($error)));
+		}
+
+		// Find the most likely culprit of the error by going through
+		// the backtrace until the source file is no longer in the
+		// database folder.
+		$trace = debug_backtrace();
+		foreach ($trace as $call)
+		{
+			if (isset($call['file'], $call['class']))
+			{
+				// We'll need this on Windows, as APPPATH and BASEPATH will always use forward slashes
+				if (DIRECTORY_SEPARATOR !== '/')
+				{
+					$call['file'] = str_replace('\\', '/', $call['file']);
+				}
+
+				if (strpos($call['file'], BASEPATH.'database') === FALSE && strpos($call['class'], 'Loader') === FALSE)
+				{
+					// Found it - use a relative path for safety
+					$message[] = 'Filename: '.str_replace(array(APPPATH, BASEPATH), '', $call['file']);
+					$message[] = 'Line Number: '.$call['line'];
+					break;
+				}
+			}
+		}
+
+		$error =& load_class('Exceptions', 'core');
+		echo $error->show_error($heading, $message, 'error_db');
+		exit(8); // EXIT_DATABASE
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Protect Identifiers
+	 *
+	 * This function is used extensively by the Query Builder class, and by
+	 * a couple functions in this class.
+	 * It takes a column or table name (optionally with an alias) and inserts
+	 * the table prefix onto it. Some logic is necessary in order to deal with
+	 * column names that include the path. Consider a query like this:
+	 *
+	 * SELECT hostname.database.table.column AS c FROM hostname.database.table
+	 *
+	 * Or a query with aliasing:
+	 *
+	 * SELECT m.member_id, m.member_name FROM members AS m
+	 *
+	 * Since the column name can include up to four segments (host, DB, table, column)
+	 * or also have an alias prefix, we need to do a bit of work to figure this out and
+	 * insert the table prefix (if it exists) in the proper position, and escape only
+	 * the correct identifiers.
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @param	mixed
+	 * @param	bool
+	 * @return	string
+	 */
+	public function protect_identifiers($item, $prefix_single = FALSE, $protect_identifiers = NULL, $field_exists = TRUE)
+	{
+		if ( ! is_bool($protect_identifiers))
+		{
+			$protect_identifiers = $this->_protect_identifiers;
+		}
+
+		if (is_array($item))
+		{
+			$escaped_array = array();
+			foreach ($item as $k => $v)
+			{
+				$escaped_array[$this->protect_identifiers($k)] = $this->protect_identifiers($v, $prefix_single, $protect_identifiers, $field_exists);
+			}
+
+			return $escaped_array;
+		}
+
+		// This is basically a bug fix for queries that use MAX, MIN, etc.
+		// If a parenthesis is found we know that we do not need to
+		// escape the data or add a prefix. There's probably a more graceful
+		// way to deal with this, but I'm not thinking of it -- Rick
+		//
+		// Added exception for single quotes as well, we don't want to alter
+		// literal strings. -- Narf
+		if (strcspn($item, "()'") !== strlen($item))
+		{
+			return $item;
+		}
+
+		// Convert tabs or multiple spaces into single spaces
+		$item = preg_replace('/\s+/', ' ', trim($item));
+
+		// If the item has an alias declaration we remove it and set it aside.
+		// Note: strripos() is used in order to support spaces in table names
+		if ($offset = strripos($item, ' AS '))
+		{
+			$alias = ($protect_identifiers)
+				? substr($item, $offset, 4).$this->escape_identifiers(substr($item, $offset + 4), FALSE)
+				: substr($item, $offset);
+			$item = substr($item, 0, $offset);
+		}
+		elseif ($offset = strrpos($item, ' '))
+		{
+			$alias = ($protect_identifiers)
+				? ' '.$this->escape_identifiers(substr($item, $offset + 1), FALSE)
+				: substr($item, $offset);
+			$item = substr($item, 0, $offset);
+		}
+		else
+		{
+			$alias = '';
+		}
+
+		// Break the string apart if it contains periods, then insert the table prefix
+		// in the correct location, assuming the period doesn't indicate that we're dealing
+		// with an alias. While we're at it, we will escape the components
+		if (strpos($item, '.') !== FALSE)
+		{
+			$parts = explode('.', $item);
+
+			// Does the first segment of the exploded item match
+			// one of the aliases previously identified? If so,
+			// we have nothing more to do other than escape the item
+			//
+			// NOTE: The ! empty() condition prevents this method
+			//       from breaking when QB isn't enabled.
+			if ( ! empty($this->qb_aliased_tables) && in_array($parts[0], $this->qb_aliased_tables))
+			{
+				if ($protect_identifiers === TRUE)
+				{
+					foreach ($parts as $key => $val)
+					{
+						if ( ! in_array($val, $this->_reserved_identifiers))
+						{
+							$parts[$key] = $this->escape_identifiers($val);
+						}
+					}
+
+					$item = implode('.', $parts);
+				}
+
+				return $item.$alias;
+			}
+
+			// Is there a table prefix defined in the config file? If not, no need to do anything
+			if ($this->dbprefix !== '')
+			{
+				// We now add the table prefix based on some logic.
+				// Do we have 4 segments (hostname.database.table.column)?
+				// If so, we add the table prefix to the column name in the 3rd segment.
+				if (isset($parts[3]))
+				{
+					$i = 2;
+				}
+				// Do we have 3 segments (database.table.column)?
+				// If so, we add the table prefix to the column name in 2nd position
+				elseif (isset($parts[2]))
+				{
+					$i = 1;
+				}
+				// Do we have 2 segments (table.column)?
+				// If so, we add the table prefix to the column name in 1st segment
+				else
+				{
+					$i = 0;
+				}
+
+				// This flag is set when the supplied $item does not contain a field name.
+				// This can happen when this function is being called from a JOIN.
+				if ($field_exists === FALSE)
+				{
+					$i++;
+				}
+
+				// dbprefix may've already been applied, with or without the identifier escaped
+				$ec = '(?<ec>'.preg_quote(is_array($this->_escape_char) ? $this->_escape_char[0] : $this->_escape_char).')?';
+				isset($ec[0]) && $ec .= '?'; // Just in case someone has disabled escaping by forcing an empty escape character
+
+				// Verify table prefix and replace if necessary
+				if ($this->swap_pre !== '' && preg_match('#^'.$ec.preg_quote($this->swap_pre).'#', $parts[$i]))
+				{
+					$parts[$i] = preg_replace('#^'.$ec.preg_quote($this->swap_pre).'(\S+?)#', '\\1'.$this->dbprefix.'\\2', $parts[$i]);
+				}
+				// We only add the table prefix if it does not already exist
+				else
+				{
+					preg_match('#^'.$ec.preg_quote($this->dbprefix).'#', $parts[$i]) OR $parts[$i] = $this->dbprefix.$parts[$i];
+				}
+
+				// Put the parts back together
+				$item = implode('.', $parts);
+			}
+
+			if ($protect_identifiers === TRUE)
+			{
+				$item = $this->escape_identifiers($item);
+			}
+
+			return $item.$alias;
+		}
+
+		// Is there a table prefix? If not, no need to insert it
+		if ($this->dbprefix !== '')
+		{
+			// Verify table prefix and replace if necessary
+			if ($this->swap_pre !== '' && strpos($item, $this->swap_pre) === 0)
+			{
+				$item = preg_replace('/^'.$this->swap_pre.'(\S+?)/', $this->dbprefix.'\\1', $item);
+			}
+			// Do we prefix an item with no segments?
+			elseif ($prefix_single === TRUE && strpos($item, $this->dbprefix) !== 0)
+			{
+				$item = $this->dbprefix.$item;
+			}
+		}
+
+		if ($protect_identifiers === TRUE && ! in_array($item, $this->_reserved_identifiers))
+		{
+			$item = $this->escape_identifiers($item);
+		}
+
+		return $item.$alias;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Dummy method that allows Query Builder class to be disabled
+	 * and keep count_all() working.
+	 *
+	 * @return	void
+	 */
+	protected function _reset_select()
+	{
+	}
+
+}
diff --git a/system/database/DB_forge.php b/system/database/DB_forge.php
new file mode 100644
index 00000000..ce9b30d8
--- /dev/null
+++ b/system/database/DB_forge.php
@@ -0,0 +1,1045 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Database Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+abstract class CI_DB_forge {
+
+	/**
+	 * Database object
+	 *
+	 * @var	object
+	 */
+	protected $db;
+
+	/**
+	 * Fields data
+	 *
+	 * @var	array
+	 */
+	public $fields		= array();
+
+	/**
+	 * Keys data
+	 *
+	 * @var	array
+	 */
+	public $keys		= array();
+
+	/**
+	 * Primary Keys data
+	 *
+	 * @var	array
+	 */
+	public $primary_keys	= array();
+
+	/**
+	 * Database character set
+	 *
+	 * @var	string
+	 */
+	public $db_char_set	= '';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= 'CREATE DATABASE %s';
+
+	/**
+	 * DROP DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_database	= 'DROP DATABASE %s';
+
+	/**
+	 * CREATE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table	= "%s %s (%s\n)";
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= 'CREATE TABLE IF NOT EXISTS';
+
+	/**
+	 * CREATE TABLE keys flag
+	 *
+	 * Whether table keys are created from within the
+	 * CREATE TABLE statement.
+	 *
+	 * @var	bool
+	 */
+	protected $_create_table_keys	= FALSE;
+
+	/**
+	 * DROP TABLE IF EXISTS statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
+
+	/**
+	 * RENAME TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_rename_table	= 'ALTER TABLE %s RENAME TO %s;';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= TRUE;
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= '';
+
+	/**
+	 * DEFAULT value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_default		= ' DEFAULT ';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$db	Database object
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		$this->db =& $db;
+		log_message('info', 'Database Forge Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create database
+	 *
+	 * @param	string	$db_name
+	 * @return	bool
+	 */
+	public function create_database($db_name)
+	{
+		if ($this->_create_database === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+		elseif ( ! $this->db->query(sprintf($this->_create_database, $this->db->escape_identifiers($db_name), $this->db->char_set, $this->db->dbcollat)))
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unable_to_drop') : FALSE;
+		}
+
+		if ( ! empty($this->db->data_cache['db_names']))
+		{
+			$this->db->data_cache['db_names'][] = $db_name;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @param	string	$db_name
+	 * @return	bool
+	 */
+	public function drop_database($db_name)
+	{
+		if ($this->_drop_database === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+		elseif ( ! $this->db->query(sprintf($this->_drop_database, $this->db->escape_identifiers($db_name))))
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unable_to_drop') : FALSE;
+		}
+
+		if ( ! empty($this->db->data_cache['db_names']))
+		{
+			$key = array_search(strtolower($db_name), array_map('strtolower', $this->db->data_cache['db_names']), TRUE);
+			if ($key !== FALSE)
+			{
+				unset($this->db->data_cache['db_names'][$key]);
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Key
+	 *
+	 * @param	string	$key
+	 * @param	bool	$primary
+	 * @return	CI_DB_forge
+	 */
+	public function add_key($key, $primary = FALSE)
+	{
+		// DO NOT change this! This condition is only applicable
+		// for PRIMARY keys because you can only have one such,
+		// and therefore all fields you add to it will be included
+		// in the same, composite PRIMARY KEY.
+		//
+		// It's not the same for regular indexes.
+		if ($primary === TRUE && is_array($key))
+		{
+			foreach ($key as $one)
+			{
+				$this->add_key($one, $primary);
+			}
+
+			return $this;
+		}
+
+		if ($primary === TRUE)
+		{
+			$this->primary_keys[] = $key;
+		}
+		else
+		{
+			$this->keys[] = $key;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Field
+	 *
+	 * @param	array	$field
+	 * @return	CI_DB_forge
+	 */
+	public function add_field($field)
+	{
+		if (is_string($field))
+		{
+			if ($field === 'id')
+			{
+				$this->add_field(array(
+					'id' => array(
+						'type' => 'INT',
+						'constraint' => 9,
+						'auto_increment' => TRUE
+					)
+				));
+				$this->add_key('id', TRUE);
+			}
+			else
+			{
+				if (strpos($field, ' ') === FALSE)
+				{
+					show_error('Field information is required for that operation.');
+				}
+
+				$this->fields[] = $field;
+			}
+		}
+
+		if (is_array($field))
+		{
+			$this->fields = array_merge($this->fields, $field);
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Table
+	 *
+	 * @param	string	$table		Table name
+	 * @param	bool	$if_not_exists	Whether to add IF NOT EXISTS condition
+	 * @param	array	$attributes	Associative array of table attributes
+	 * @return	bool
+	 */
+	public function create_table($table, $if_not_exists = FALSE, array $attributes = array())
+	{
+		if ($table === '')
+		{
+			show_error('A table name is required for that operation.');
+		}
+		else
+		{
+			$table = $this->db->dbprefix.$table;
+		}
+
+		if (count($this->fields) === 0)
+		{
+			show_error('Field information is required.');
+		}
+
+		$sql = $this->_create_table($table, $if_not_exists, $attributes);
+
+		if (is_bool($sql))
+		{
+			$this->_reset();
+			if ($sql === FALSE)
+			{
+				return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+			}
+		}
+
+		if (($result = $this->db->query($sql)) !== FALSE)
+		{
+			if (isset($this->db->data_cache['table_names']))
+			{
+				$this->db->data_cache['table_names'][] = $table;
+			}
+
+			// Most databases don't support creating indexes from within the CREATE TABLE statement
+			if ( ! empty($this->keys))
+			{
+				for ($i = 0, $sqls = $this->_process_indexes($table), $c = count($sqls); $i < $c; $i++)
+				{
+					$this->db->query($sqls[$i]);
+				}
+			}
+		}
+
+		$this->_reset();
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Table
+	 *
+	 * @param	string	$table		Table name
+	 * @param	bool	$if_not_exists	Whether to add 'IF NOT EXISTS' condition
+	 * @param	array	$attributes	Associative array of table attributes
+	 * @return	mixed
+	 */
+	protected function _create_table($table, $if_not_exists, $attributes)
+	{
+		if ($if_not_exists === TRUE && $this->_create_table_if === FALSE)
+		{
+			if ($this->db->table_exists($table))
+			{
+				return TRUE;
+			}
+
+			$if_not_exists = FALSE;
+		}
+
+		$sql = ($if_not_exists)
+			? sprintf($this->_create_table_if, $this->db->escape_identifiers($table))
+			: 'CREATE TABLE';
+
+		$columns = $this->_process_fields(TRUE);
+		for ($i = 0, $c = count($columns); $i < $c; $i++)
+		{
+			$columns[$i] = ($columns[$i]['_literal'] !== FALSE)
+					? "\n\t".$columns[$i]['_literal']
+					: "\n\t".$this->_process_column($columns[$i]);
+		}
+
+		$columns = implode(',', $columns)
+				.$this->_process_primary_keys($table);
+
+		// Are indexes created from within the CREATE TABLE statement? (e.g. in MySQL)
+		if ($this->_create_table_keys === TRUE)
+		{
+			$columns .= $this->_process_indexes($table);
+		}
+
+		// _create_table will usually have the following format: "%s %s (%s\n)"
+		$sql = sprintf($this->_create_table.'%s',
+			$sql,
+			$this->db->escape_identifiers($table),
+			$columns,
+			$this->_create_table_attr($attributes)
+		);
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CREATE TABLE attributes
+	 *
+	 * @param	array	$attributes	Associative array of table attributes
+	 * @return	string
+	 */
+	protected function _create_table_attr($attributes)
+	{
+		$sql = '';
+
+		foreach (array_keys($attributes) as $key)
+		{
+			if (is_string($key))
+			{
+				$sql .= ' '.strtoupper($key).' '.$attributes[$key];
+			}
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop Table
+	 *
+	 * @param	string	$table_name	Table name
+	 * @param	bool	$if_exists	Whether to add an IF EXISTS condition
+	 * @return	bool
+	 */
+	public function drop_table($table_name, $if_exists = FALSE)
+	{
+		if ($table_name === '')
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_table_name_required') : FALSE;
+		}
+
+		if (($query = $this->_drop_table($this->db->dbprefix.$table_name, $if_exists)) === TRUE)
+		{
+			return TRUE;
+		}
+
+		$query = $this->db->query($query);
+
+		// Update table list cache
+		if ($query && ! empty($this->db->data_cache['table_names']))
+		{
+			$key = array_search(strtolower($this->db->dbprefix.$table_name), array_map('strtolower', $this->db->data_cache['table_names']), TRUE);
+			if ($key !== FALSE)
+			{
+				unset($this->db->data_cache['table_names'][$key]);
+			}
+		}
+
+		return $query;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop Table
+	 *
+	 * Generates a platform-specific DROP TABLE string
+	 *
+	 * @param	string	$table		Table name
+	 * @param	bool	$if_exists	Whether to add an IF EXISTS condition
+	 * @return	mixed	(Returns a platform-specific DROP table string, or TRUE to indicate there's nothing to do)
+	 */
+	protected function _drop_table($table, $if_exists)
+	{
+		$sql = 'DROP TABLE';
+
+		if ($if_exists)
+		{
+			if ($this->_drop_table_if === FALSE)
+			{
+				if ( ! $this->db->table_exists($table))
+				{
+					return TRUE;
+				}
+			}
+			else
+			{
+				$sql = sprintf($this->_drop_table_if, $this->db->escape_identifiers($table));
+			}
+		}
+
+		return $sql.' '.$this->db->escape_identifiers($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rename Table
+	 *
+	 * @param	string	$table_name	Old table name
+	 * @param	string	$new_table_name	New table name
+	 * @return	bool
+	 */
+	public function rename_table($table_name, $new_table_name)
+	{
+		if ($table_name === '' OR $new_table_name === '')
+		{
+			show_error('A table name is required for that operation.');
+			return FALSE;
+		}
+		elseif ($this->_rename_table === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		$result = $this->db->query(sprintf($this->_rename_table,
+						$this->db->escape_identifiers($this->db->dbprefix.$table_name),
+						$this->db->escape_identifiers($this->db->dbprefix.$new_table_name))
+					);
+
+		if ($result && ! empty($this->db->data_cache['table_names']))
+		{
+			$key = array_search(strtolower($this->db->dbprefix.$table_name), array_map('strtolower', $this->db->data_cache['table_names']), TRUE);
+			if ($key !== FALSE)
+			{
+				$this->db->data_cache['table_names'][$key] = $this->db->dbprefix.$new_table_name;
+			}
+		}
+
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Column Add
+	 *
+	 * @todo	Remove deprecated $_after option in 3.1+
+	 * @param	string	$table	Table name
+	 * @param	array	$field	Column definition
+	 * @param	string	$_after	Column for AFTER clause (deprecated)
+	 * @return	bool
+	 */
+	public function add_column($table, $field, $_after = NULL)
+	{
+		// Work-around for literal column definitions
+		is_array($field) OR $field = array($field);
+
+		foreach (array_keys($field) as $k)
+		{
+			// Backwards-compatibility work-around for MySQL/CUBRID AFTER clause (remove in 3.1+)
+			if ($_after !== NULL && is_array($field[$k]) && ! isset($field[$k]['after']))
+			{
+				$field[$k]['after'] = $_after;
+			}
+
+			$this->add_field(array($k => $field[$k]));
+		}
+
+		$sqls = $this->_alter_table('ADD', $this->db->dbprefix.$table, $this->_process_fields());
+		$this->_reset();
+		if ($sqls === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		for ($i = 0, $c = count($sqls); $i < $c; $i++)
+		{
+			if ($this->db->query($sqls[$i]) === FALSE)
+			{
+				return FALSE;
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Column Drop
+	 *
+	 * @param	string	$table		Table name
+	 * @param	string	$column_name	Column name
+	 * @return	bool
+	 */
+	public function drop_column($table, $column_name)
+	{
+		$sql = $this->_alter_table('DROP', $this->db->dbprefix.$table, $column_name);
+		if ($sql === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		return $this->db->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Column Modify
+	 *
+	 * @param	string	$table	Table name
+	 * @param	string	$field	Column definition
+	 * @return	bool
+	 */
+	public function modify_column($table, $field)
+	{
+		// Work-around for literal column definitions
+		is_array($field) OR $field = array($field);
+
+		foreach (array_keys($field) as $k)
+		{
+			$this->add_field(array($k => $field[$k]));
+		}
+
+		if (count($this->fields) === 0)
+		{
+			show_error('Field information is required.');
+		}
+
+		$sqls = $this->_alter_table('CHANGE', $this->db->dbprefix.$table, $this->_process_fields());
+		$this->_reset();
+		if ($sqls === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		for ($i = 0, $c = count($sqls); $i < $c; $i++)
+		{
+			if ($this->db->query($sqls[$i]) === FALSE)
+			{
+				return FALSE;
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table).' ';
+
+		// DROP has everything it needs now.
+		if ($alter_type === 'DROP')
+		{
+			return $sql.'DROP COLUMN '.$this->db->escape_identifiers($field);
+		}
+
+		$sql .= ($alter_type === 'ADD')
+			? 'ADD '
+			: $alter_type.' COLUMN ';
+
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			$sqls[] = $sql
+				.($field[$i]['_literal'] !== FALSE ? $field[$i]['_literal'] : $this->_process_column($field[$i]));
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process fields
+	 *
+	 * @param	bool	$create_table
+	 * @return	array
+	 */
+	protected function _process_fields($create_table = FALSE)
+	{
+		$fields = array();
+
+		foreach ($this->fields as $key => $attributes)
+		{
+			if (is_int($key) && ! is_array($attributes))
+			{
+				$fields[] = array('_literal' => $attributes);
+				continue;
+			}
+
+			$attributes = array_change_key_case($attributes, CASE_UPPER);
+
+			if ($create_table === TRUE && empty($attributes['TYPE']))
+			{
+				continue;
+			}
+
+			isset($attributes['TYPE']) && $this->_attr_type($attributes);
+
+			$field = array(
+				'name'			=> $key,
+				'new_name'		=> isset($attributes['NAME']) ? $attributes['NAME'] : NULL,
+				'type'			=> isset($attributes['TYPE']) ? $attributes['TYPE'] : NULL,
+				'length'		=> '',
+				'unsigned'		=> '',
+				'null'			=> NULL,
+				'unique'		=> '',
+				'default'		=> '',
+				'auto_increment'	=> '',
+				'_literal'		=> FALSE
+			);
+
+			isset($attributes['TYPE']) && $this->_attr_unsigned($attributes, $field);
+
+			if ($create_table === FALSE)
+			{
+				if (isset($attributes['AFTER']))
+				{
+					$field['after'] = $attributes['AFTER'];
+				}
+				elseif (isset($attributes['FIRST']))
+				{
+					$field['first'] = (bool) $attributes['FIRST'];
+				}
+			}
+
+			$this->_attr_default($attributes, $field);
+
+			if (isset($attributes['NULL']))
+			{
+				if ($attributes['NULL'] === TRUE)
+				{
+					$field['null'] = empty($this->_null) ? '' : ' '.$this->_null;
+				}
+				else
+				{
+					$field['null'] = ' NOT NULL';
+				}
+			}
+			elseif ($create_table === TRUE)
+			{
+				$field['null'] = ' NOT NULL';
+			}
+
+			$this->_attr_auto_increment($attributes, $field);
+			$this->_attr_unique($attributes, $field);
+
+			if (isset($attributes['COMMENT']))
+			{
+				$field['comment'] = $this->db->escape($attributes['COMMENT']);
+			}
+
+			if (isset($attributes['TYPE']) && ! empty($attributes['CONSTRAINT']))
+			{
+				switch (strtoupper($attributes['TYPE']))
+				{
+					case 'ENUM':
+					case 'SET':
+						$attributes['CONSTRAINT'] = $this->db->escape($attributes['CONSTRAINT']);
+					default:
+						$field['length'] = is_array($attributes['CONSTRAINT'])
+							? '('.implode(',', $attributes['CONSTRAINT']).')'
+							: '('.$attributes['CONSTRAINT'].')';
+						break;
+				}
+			}
+
+			$fields[] = $field;
+		}
+
+		return $fields;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['default']
+			.$field['null']
+			.$field['auto_increment']
+			.$field['unique'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		// Usually overridden by drivers
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute UNSIGNED
+	 *
+	 * Depending on the _unsigned property value:
+	 *
+	 *	- TRUE will always set $field['unsigned'] to 'UNSIGNED'
+	 *	- FALSE will always set $field['unsigned'] to ''
+	 *	- array(TYPE) will set $field['unsigned'] to 'UNSIGNED',
+	 *		if $attributes['TYPE'] is found in the array
+	 *	- array(TYPE => UTYPE) will change $field['type'],
+	 *		from TYPE to UTYPE in case of a match
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_unsigned(&$attributes, &$field)
+	{
+		if (empty($attributes['UNSIGNED']) OR $attributes['UNSIGNED'] !== TRUE)
+		{
+			return;
+		}
+
+		// Reset the attribute in order to avoid issues if we do type conversion
+		$attributes['UNSIGNED'] = FALSE;
+
+		if (is_array($this->_unsigned))
+		{
+			foreach (array_keys($this->_unsigned) as $key)
+			{
+				if (is_int($key) && strcasecmp($attributes['TYPE'], $this->_unsigned[$key]) === 0)
+				{
+					$field['unsigned'] = ' UNSIGNED';
+					return;
+				}
+				elseif (is_string($key) && strcasecmp($attributes['TYPE'], $key) === 0)
+				{
+					$field['type'] = $key;
+					return;
+				}
+			}
+
+			return;
+		}
+
+		$field['unsigned'] = ($this->_unsigned === TRUE) ? ' UNSIGNED' : '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute DEFAULT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_default(&$attributes, &$field)
+	{
+		if ($this->_default === FALSE)
+		{
+			return;
+		}
+
+		if ( ! array_key_exists('DEFAULT', $attributes))
+		{
+			return;
+		}
+
+		if ($attributes['DEFAULT'] === NULL)
+		{
+			$field['default'] = empty($this->_null) ? '' : $this->_default.$this->_null;
+
+			// Override the NULL attribute if that's our default
+			$attributes['NULL'] = TRUE;
+			$field['null'] = empty($this->_null) ? '' : ' '.$this->_null;
+			return;
+		}
+
+		// White-list CURRENT_TIMESTAMP & similar (e.g. Oracle has stuff like SYSTIMESTAMP) defaults for date/time fields
+		if (
+			isset($attributes['TYPE'])
+			&& (stripos($attributes['TYPE'],    'time') !== FALSE OR stripos($attributes['TYPE'],    'date') !== FALSE)
+			&& (stripos($attributes['DEFAULT'], 'time') !== FALSE OR stripos($attributes['DEFAULT'], 'date') !== FALSE)
+		)
+		{
+			$field['default'] = $this->_default.$attributes['DEFAULT'];
+			return;
+		}
+
+		$field['default'] = $this->_default.$this->db->escape($attributes['DEFAULT']);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute UNIQUE
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_unique(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['UNIQUE']) && $attributes['UNIQUE'] === TRUE)
+		{
+			$field['unique'] = ' UNIQUE';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['auto_increment'] = ' AUTO_INCREMENT';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process primary keys
+	 *
+	 * @param	string	$table	Table name
+	 * @return	string
+	 */
+	protected function _process_primary_keys($table)
+	{
+		$sql = '';
+
+		for ($i = 0, $c = count($this->primary_keys); $i < $c; $i++)
+		{
+			if ( ! isset($this->fields[$this->primary_keys[$i]]))
+			{
+				unset($this->primary_keys[$i]);
+			}
+		}
+
+		if (count($this->primary_keys) > 0)
+		{
+			$sql .= ",\n\tCONSTRAINT ".$this->db->escape_identifiers('pk_'.$table)
+				.' PRIMARY KEY('.implode(', ', $this->db->escape_identifiers($this->primary_keys)).')';
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process indexes
+	 *
+	 * @param	string	$table	Table name
+	 * @return	string[] list of SQL statements
+	 */
+	protected function _process_indexes($table)
+	{
+		$sqls = array();
+
+		for ($i = 0, $c = count($this->keys); $i < $c; $i++)
+		{
+			if (is_array($this->keys[$i]))
+			{
+				for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
+				{
+					if ( ! isset($this->fields[$this->keys[$i][$i2]]))
+					{
+						unset($this->keys[$i][$i2]);
+						continue;
+					}
+				}
+			}
+			elseif ( ! isset($this->fields[$this->keys[$i]]))
+			{
+				unset($this->keys[$i]);
+				continue;
+			}
+
+			is_array($this->keys[$i]) OR $this->keys[$i] = array($this->keys[$i]);
+
+			$sqls[] = 'CREATE INDEX '.$this->db->escape_identifiers($table.'_'.implode('_', $this->keys[$i]))
+				.' ON '.$this->db->escape_identifiers($table)
+				.' ('.implode(', ', $this->db->escape_identifiers($this->keys[$i])).');';
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reset
+	 *
+	 * Resets table creation vars
+	 *
+	 * @return	void
+	 */
+	protected function _reset()
+	{
+		$this->fields = $this->keys = $this->primary_keys = array();
+	}
+
+}
diff --git a/system/database/DB_query_builder.php b/system/database/DB_query_builder.php
new file mode 100644
index 00000000..5480ed44
--- /dev/null
+++ b/system/database/DB_query_builder.php
@@ -0,0 +1,2880 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Query Builder Class
+ *
+ * This is the platform-independent base Query Builder implementation class.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+
+abstract class CI_DB_query_builder extends CI_DB_driver {
+
+	/**
+	 * Return DELETE SQL flag
+	 *
+	 * @var	bool
+	 */
+	protected $return_delete_sql		= FALSE;
+
+	/**
+	 * Reset DELETE data flag
+	 *
+	 * @var	bool
+	 */
+	protected $reset_delete_data		= FALSE;
+
+	/**
+	 * QB SELECT data
+	 *
+	 * @var	array
+	 */
+	protected $qb_select			= array();
+
+	/**
+	 * QB DISTINCT flag
+	 *
+	 * @var	bool
+	 */
+	protected $qb_distinct			= FALSE;
+
+	/**
+	 * QB FROM data
+	 *
+	 * @var	array
+	 */
+	protected $qb_from			= array();
+
+	/**
+	 * QB JOIN data
+	 *
+	 * @var	array
+	 */
+	protected $qb_join			= array();
+
+	/**
+	 * QB WHERE data
+	 *
+	 * @var	array
+	 */
+	protected $qb_where			= array();
+
+	/**
+	 * QB GROUP BY data
+	 *
+	 * @var	array
+	 */
+	protected $qb_groupby			= array();
+
+	/**
+	 * QB HAVING data
+	 *
+	 * @var	array
+	 */
+	protected $qb_having			= array();
+
+	/**
+	 * QB keys
+	 *
+	 * @var	array
+	 */
+	protected $qb_keys			= array();
+
+	/**
+	 * QB LIMIT data
+	 *
+	 * @var	int
+	 */
+	protected $qb_limit			= FALSE;
+
+	/**
+	 * QB OFFSET data
+	 *
+	 * @var	int
+	 */
+	protected $qb_offset			= FALSE;
+
+	/**
+	 * QB ORDER BY data
+	 *
+	 * @var	array
+	 */
+	protected $qb_orderby			= array();
+
+	/**
+	 * QB data sets
+	 *
+	 * @var	array
+	 */
+	protected $qb_set			= array();
+
+	/**
+	 * QB data set for update_batch()
+	 *
+	 * @var	array
+	 */
+	protected $qb_set_ub			= array();
+
+	/**
+	 * QB aliased tables list
+	 *
+	 * @var	array
+	 */
+	protected $qb_aliased_tables		= array();
+
+	/**
+	 * QB WHERE group started flag
+	 *
+	 * @var	bool
+	 */
+	protected $qb_where_group_started	= FALSE;
+
+	/**
+	 * QB WHERE group count
+	 *
+	 * @var	int
+	 */
+	protected $qb_where_group_count		= 0;
+
+	// Query Builder Caching variables
+
+	/**
+	 * QB Caching flag
+	 *
+	 * @var	bool
+	 */
+	protected $qb_caching				= FALSE;
+
+	/**
+	 * QB Cache exists list
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_exists			= array();
+
+	/**
+	 * QB Cache SELECT data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_select			= array();
+
+	/**
+	 * QB Cache FROM data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_from			= array();
+
+	/**
+	 * QB Cache JOIN data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_join			= array();
+
+	/**
+	 * QB Cache aliased tables list
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_aliased_tables			= array();
+
+	/**
+	 * QB Cache WHERE data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_where			= array();
+
+	/**
+	 * QB Cache GROUP BY data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_groupby			= array();
+
+	/**
+	 * QB Cache HAVING data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_having			= array();
+
+	/**
+	 * QB Cache ORDER BY data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_orderby			= array();
+
+	/**
+	 * QB Cache data sets
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_set				= array();
+
+	/**
+	 * QB No Escape data
+	 *
+	 * @var	array
+	 */
+	protected $qb_no_escape 			= array();
+
+	/**
+	 * QB Cache No Escape data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_no_escape			= array();
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select
+	 *
+	 * Generates the SELECT portion of the query
+	 *
+	 * @param	string
+	 * @param	mixed
+	 * @return	CI_DB_query_builder
+	 */
+	public function select($select = '*', $escape = NULL)
+	{
+		if (is_string($select))
+		{
+			$select = explode(',', $select);
+		}
+
+		// If the escape value was not set, we will base it on the global setting
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		foreach ($select as $val)
+		{
+			$val = trim($val);
+
+			if ($val !== '')
+			{
+				$this->qb_select[] = $val;
+				$this->qb_no_escape[] = $escape;
+
+				if ($this->qb_caching === TRUE)
+				{
+					$this->qb_cache_select[] = $val;
+					$this->qb_cache_exists[] = 'select';
+					$this->qb_cache_no_escape[] = $escape;
+				}
+			}
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select Max
+	 *
+	 * Generates a SELECT MAX(field) portion of a query
+	 *
+	 * @param	string	the field
+	 * @param	string	an alias
+	 * @return	CI_DB_query_builder
+	 */
+	public function select_max($select = '', $alias = '')
+	{
+		return $this->_max_min_avg_sum($select, $alias, 'MAX');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select Min
+	 *
+	 * Generates a SELECT MIN(field) portion of a query
+	 *
+	 * @param	string	the field
+	 * @param	string	an alias
+	 * @return	CI_DB_query_builder
+	 */
+	public function select_min($select = '', $alias = '')
+	{
+		return $this->_max_min_avg_sum($select, $alias, 'MIN');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select Average
+	 *
+	 * Generates a SELECT AVG(field) portion of a query
+	 *
+	 * @param	string	the field
+	 * @param	string	an alias
+	 * @return	CI_DB_query_builder
+	 */
+	public function select_avg($select = '', $alias = '')
+	{
+		return $this->_max_min_avg_sum($select, $alias, 'AVG');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select Sum
+	 *
+	 * Generates a SELECT SUM(field) portion of a query
+	 *
+	 * @param	string	the field
+	 * @param	string	an alias
+	 * @return	CI_DB_query_builder
+	 */
+	public function select_sum($select = '', $alias = '')
+	{
+		return $this->_max_min_avg_sum($select, $alias, 'SUM');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * SELECT [MAX|MIN|AVG|SUM]()
+	 *
+	 * @used-by	select_max()
+	 * @used-by	select_min()
+	 * @used-by	select_avg()
+	 * @used-by	select_sum()
+	 *
+	 * @param	string	$select	Field name
+	 * @param	string	$alias
+	 * @param	string	$type
+	 * @return	CI_DB_query_builder
+	 */
+	protected function _max_min_avg_sum($select = '', $alias = '', $type = 'MAX')
+	{
+		if ( ! is_string($select) OR $select === '')
+		{
+			$this->display_error('db_invalid_query');
+		}
+
+		$type = strtoupper($type);
+
+		if ( ! in_array($type, array('MAX', 'MIN', 'AVG', 'SUM')))
+		{
+			show_error('Invalid function type: '.$type);
+		}
+
+		if ($alias === '')
+		{
+			$alias = $this->_create_alias_from_table(trim($select));
+		}
+
+		$sql = $type.'('.$this->protect_identifiers(trim($select)).') AS '.$this->escape_identifiers(trim($alias));
+
+		$this->qb_select[] = $sql;
+		$this->qb_no_escape[] = NULL;
+
+		if ($this->qb_caching === TRUE)
+		{
+			$this->qb_cache_select[] = $sql;
+			$this->qb_cache_exists[] = 'select';
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determines the alias name based on the table
+	 *
+	 * @param	string	$item
+	 * @return	string
+	 */
+	protected function _create_alias_from_table($item)
+	{
+		if (strpos($item, '.') !== FALSE)
+		{
+			$item = explode('.', $item);
+			return end($item);
+		}
+
+		return $item;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * DISTINCT
+	 *
+	 * Sets a flag which tells the query string compiler to add DISTINCT
+	 *
+	 * @param	bool	$val
+	 * @return	CI_DB_query_builder
+	 */
+	public function distinct($val = TRUE)
+	{
+		$this->qb_distinct = is_bool($val) ? $val : TRUE;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * From
+	 *
+	 * Generates the FROM portion of the query
+	 *
+	 * @param	mixed	$from	can be a string or array
+	 * @return	CI_DB_query_builder
+	 */
+	public function from($from)
+	{
+		foreach ((array) $from as $val)
+		{
+			if (strpos($val, ',') !== FALSE)
+			{
+				foreach (explode(',', $val) as $v)
+				{
+					$v = trim($v);
+					$this->_track_aliases($v);
+
+					$this->qb_from[] = $v = $this->protect_identifiers($v, TRUE, NULL, FALSE);
+
+					if ($this->qb_caching === TRUE)
+					{
+						$this->qb_cache_from[] = $v;
+						$this->qb_cache_exists[] = 'from';
+					}
+				}
+			}
+			else
+			{
+				$val = trim($val);
+
+				// Extract any aliases that might exist. We use this information
+				// in the protect_identifiers to know whether to add a table prefix
+				$this->_track_aliases($val);
+
+				$this->qb_from[] = $val = $this->protect_identifiers($val, TRUE, NULL, FALSE);
+
+				if ($this->qb_caching === TRUE)
+				{
+					$this->qb_cache_from[] = $val;
+					$this->qb_cache_exists[] = 'from';
+				}
+			}
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * JOIN
+	 *
+	 * Generates the JOIN portion of the query
+	 *
+	 * @param	string
+	 * @param	string	the join condition
+	 * @param	string	the type of join
+	 * @param	string	whether not to try to escape identifiers
+	 * @return	CI_DB_query_builder
+	 */
+	public function join($table, $cond, $type = '', $escape = NULL)
+	{
+		$type = trim(strtoupper($type).' JOIN');
+		preg_match('#^(NATURAL\s+)?((LEFT|RIGHT|FULL)\s+)?((INNER|OUTER)\s+)?JOIN$#', $type) OR $type = 'JOIN';
+
+		// Extract any aliases that might exist. We use this information
+		// in the protect_identifiers to know whether to add a table prefix
+		$this->_track_aliases($table);
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		if (strpos($type, 'NATURAL') === 0)
+		{
+			$cond = '';
+		}
+		elseif ( ! $this->_has_operator($cond))
+		{
+			$cond = ' USING ('.($escape ? $this->escape_identifiers($cond) : $cond).')';
+		}
+		elseif ($escape === FALSE)
+		{
+			$cond = ' ON '.$cond;
+		}
+		else
+		{
+			// Split multiple conditions
+			if (preg_match_all('/\sAND\s|\sOR\s/i', $cond, $joints, PREG_OFFSET_CAPTURE))
+			{
+				$conditions = array();
+				$joints = $joints[0];
+				array_unshift($joints, array('', 0));
+
+				for ($i = count($joints) - 1, $pos = strlen($cond); $i >= 0; $i--)
+				{
+					$joints[$i][1] += strlen($joints[$i][0]); // offset
+					$conditions[$i] = substr($cond, $joints[$i][1], $pos - $joints[$i][1]);
+					$pos = $joints[$i][1] - strlen($joints[$i][0]);
+					$joints[$i] = $joints[$i][0];
+				}
+			}
+			else
+			{
+				$conditions = array($cond);
+				$joints = array('');
+			}
+
+			$cond = ' ON ';
+			for ($i = 0, $c = count($conditions); $i < $c; $i++)
+			{
+				$operator = $this->_get_operator($conditions[$i]);
+				$cond .= $joints[$i];
+				$cond .= preg_match("/(\(*)?([\[\]\w\.'-]+)".preg_quote($operator)."(.*)/i", $conditions[$i], $match)
+					? $match[1].$this->protect_identifiers($match[2]).$operator.$this->protect_identifiers($match[3])
+					: $conditions[$i];
+			}
+		}
+
+		// Do we want to escape the table name?
+		if ($escape === TRUE)
+		{
+			$table = $this->protect_identifiers($table, TRUE, NULL, FALSE);
+		}
+
+		// Assemble the JOIN statement
+		$this->qb_join[] = $join = $type.' '.$table.$cond;
+
+		if ($this->qb_caching === TRUE)
+		{
+			$this->qb_cache_join[] = $join;
+			$this->qb_cache_exists[] = 'join';
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * WHERE
+	 *
+	 * Generates the WHERE portion of the query.
+	 * Separates multiple calls with 'AND'.
+	 *
+	 * @param	mixed
+	 * @param	mixed
+	 * @param	bool
+	 * @return	CI_DB_query_builder
+	 */
+	public function where($key, $value = NULL, $escape = NULL)
+	{
+		return $this->_wh('qb_where', $key, $value, 'AND ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR WHERE
+	 *
+	 * Generates the WHERE portion of the query.
+	 * Separates multiple calls with 'OR'.
+	 *
+	 * @param	mixed
+	 * @param	mixed
+	 * @param	bool
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_where($key, $value = NULL, $escape = NULL)
+	{
+		return $this->_wh('qb_where', $key, $value, 'OR ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * WHERE, HAVING
+	 *
+	 * @used-by	where()
+	 * @used-by	or_where()
+	 * @used-by	having()
+	 * @used-by	or_having()
+	 *
+	 * @param	string	$qb_key	'qb_where' or 'qb_having'
+	 * @param	mixed	$key
+	 * @param	mixed	$value
+	 * @param	string	$type
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	protected function _wh($qb_key, $key, $value = NULL, $type = 'AND ', $escape = NULL)
+	{
+		$qb_cache_key = ($qb_key === 'qb_having') ? 'qb_cache_having' : 'qb_cache_where';
+
+		if ( ! is_array($key))
+		{
+			$key = array($key => $value);
+		}
+
+		// If the escape value was not set will base it on the global setting
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		foreach ($key as $k => $v)
+		{
+			$prefix = (count($this->$qb_key) === 0 && count($this->$qb_cache_key) === 0)
+				? $this->_group_get_type('')
+				: $this->_group_get_type($type);
+
+			if ($v !== NULL)
+			{
+				if ($escape === TRUE)
+				{
+					$v = $this->escape($v);
+				}
+
+				if ( ! $this->_has_operator($k))
+				{
+					$k .= ' = ';
+				}
+			}
+			elseif ( ! $this->_has_operator($k))
+			{
+				// value appears not to have been set, assign the test to IS NULL
+				$k .= ' IS NULL';
+			}
+			elseif (preg_match('/\s*(!?=|<>|\sIS(?:\s+NOT)?\s)\s*$/i', $k, $match, PREG_OFFSET_CAPTURE))
+			{
+				$k = substr($k, 0, $match[0][1]).($match[1][0] === '=' ? ' IS NULL' : ' IS NOT NULL');
+			}
+
+			${$qb_key} = array('condition' => $prefix.$k, 'value' => $v, 'escape' => $escape);
+			$this->{$qb_key}[] = ${$qb_key};
+			if ($this->qb_caching === TRUE)
+			{
+				$this->{$qb_cache_key}[] = ${$qb_key};
+				$this->qb_cache_exists[] = substr($qb_key, 3);
+			}
+
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * WHERE IN
+	 *
+	 * Generates a WHERE field IN('item', 'item') SQL query,
+	 * joined with 'AND' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function where_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_where', $key, $values, FALSE, 'AND ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR WHERE IN
+	 *
+	 * Generates a WHERE field IN('item', 'item') SQL query,
+	 * joined with 'OR' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_where_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_where', $key, $values, FALSE, 'OR ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * WHERE NOT IN
+	 *
+	 * Generates a WHERE field NOT IN('item', 'item') SQL query,
+	 * joined with 'AND' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function where_not_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_where', $key, $values, TRUE, 'AND ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR WHERE NOT IN
+	 *
+	 * Generates a WHERE field NOT IN('item', 'item') SQL query,
+	 * joined with 'OR' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_where_not_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_where', $key, $values, TRUE, 'OR ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * HAVING IN
+	 *
+	 * Generates a HAVING field IN('item', 'item') SQL query,
+	 * joined with 'AND' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function having_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_having', $key, $values, FALSE, 'AND ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR HAVING IN
+	 *
+	 * Generates a HAVING field IN('item', 'item') SQL query,
+	 * joined with 'OR' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_having_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_having', $key, $values, FALSE, 'OR ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * HAVING NOT IN
+	 *
+	 * Generates a HAVING field NOT IN('item', 'item') SQL query,
+	 * joined with 'AND' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function having_not_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_having', $key, $values, TRUE, 'AND ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR HAVING NOT IN
+	 *
+	 * Generates a HAVING field NOT IN('item', 'item') SQL query,
+	 * joined with 'OR' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_having_not_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_having', $key, $values, TRUE, 'OR ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal WHERE/HAVING IN
+	 *
+	 * @used-by	where_in()
+	 * @used-by	or_where_in()
+	 * @used-by	where_not_in()
+	 * @used-by	or_where_not_in()
+	 * @used-by	having_in()
+	 * @used-by	or_having_in()
+	 * @used-by	having_not_in()
+	 * @used-by	or_having_not_in()
+	 *
+	 * @param	string	$qb_key	'qb_where' or 'qb_having'
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$not	If the statement would be IN or NOT IN
+	 * @param	string	$type
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	protected function _wh_in($qb_key, $key, array $values, $not = FALSE, $type = 'AND ', $escape = NULL)
+	{
+		$qb_cache_key = ($qb_key === 'qb_having') ? 'qb_cache_having' : 'qb_cache_where';
+
+		if (empty($key) OR ! is_string($key))
+		{
+			throw new InvalidArgumentException(sprintf('%s() expects $key to be a non-empty string', debug_backtrace(0, 2)[1]['function']));
+		}
+
+		if (empty($values))
+		{
+			throw new InvalidArgumentException(sprintf('%s() expects $values to be a non-empty array', debug_backtrace(0, 2)[1]['function']));
+		}
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		$not = ($not) ? ' NOT' : '';
+
+		if ($escape === TRUE)
+		{
+			$wh_in = array();
+			foreach ($values as $value)
+			{
+				$wh_in[] = $this->escape($value);
+			}
+		}
+		else
+		{
+			$wh_in = array_values($values);
+		}
+
+		$prefix = (count($this->$qb_key) === 0 && count($this->$qb_cache_key) === 0)
+			? $this->_group_get_type('')
+			: $this->_group_get_type($type);
+
+		$wh_in = array(
+			'condition' => $prefix.$key.$not.' IN('.implode(', ', $wh_in).')',
+			'value' => NULL,
+			'escape' => $escape
+		);
+
+		$this->{$qb_key}[] = $wh_in;
+		if ($this->qb_caching === TRUE)
+		{
+			$this->{$qb_cache_key}[] = $wh_in;
+			$this->qb_cache_exists[] = substr($qb_key, 3);
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIKE
+	 *
+	 * Generates a %LIKE% portion of the query.
+	 * Separates multiple calls with 'AND'.
+	 *
+	 * @param	mixed	$field
+	 * @param	string	$match
+	 * @param	string	$side
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function like($field, $match = '', $side = 'both', $escape = NULL)
+	{
+		return $this->_like($field, $match, 'AND ', $side, '', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * NOT LIKE
+	 *
+	 * Generates a NOT LIKE portion of the query.
+	 * Separates multiple calls with 'AND'.
+	 *
+	 * @param	mixed	$field
+	 * @param	string	$match
+	 * @param	string	$side
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function not_like($field, $match = '', $side = 'both', $escape = NULL)
+	{
+		return $this->_like($field, $match, 'AND ', $side, 'NOT', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR LIKE
+	 *
+	 * Generates a %LIKE% portion of the query.
+	 * Separates multiple calls with 'OR'.
+	 *
+	 * @param	mixed	$field
+	 * @param	string	$match
+	 * @param	string	$side
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_like($field, $match = '', $side = 'both', $escape = NULL)
+	{
+		return $this->_like($field, $match, 'OR ', $side, '', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR NOT LIKE
+	 *
+	 * Generates a NOT LIKE portion of the query.
+	 * Separates multiple calls with 'OR'.
+	 *
+	 * @param	mixed	$field
+	 * @param	string	$match
+	 * @param	string	$side
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_not_like($field, $match = '', $side = 'both', $escape = NULL)
+	{
+		return $this->_like($field, $match, 'OR ', $side, 'NOT', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal LIKE
+	 *
+	 * @used-by	like()
+	 * @used-by	or_like()
+	 * @used-by	not_like()
+	 * @used-by	or_not_like()
+	 *
+	 * @param	mixed	$field
+	 * @param	string	$match
+	 * @param	string	$type
+	 * @param	string	$side
+	 * @param	string	$not
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	protected function _like($field, $match = '', $type = 'AND ', $side = 'both', $not = '', $escape = NULL)
+	{
+		if ( ! is_array($field))
+		{
+			$field = array($field => $match);
+		}
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+		// lowercase $side in case somebody writes e.g. 'BEFORE' instead of 'before' (doh)
+		$side = strtolower($side);
+
+		foreach ($field as $k => $v)
+		{
+			$prefix = (count($this->qb_where) === 0 && count($this->qb_cache_where) === 0)
+				? $this->_group_get_type('') : $this->_group_get_type($type);
+
+			if ($escape === TRUE)
+			{
+				$v = $this->escape_like_str($v);
+			}
+
+			switch ($side)
+			{
+				case 'none':
+					$v = "'{$v}'";
+					break;
+				case 'before':
+					$v = "'%{$v}'";
+					break;
+				case 'after':
+					$v = "'{$v}%'";
+					break;
+				case 'both':
+				default:
+					$v = "'%{$v}%'";
+					break;
+			}
+
+			// some platforms require an escape sequence definition for LIKE wildcards
+			if ($escape === TRUE && $this->_like_escape_str !== '')
+			{
+				$v .= sprintf($this->_like_escape_str, $this->_like_escape_chr);
+			}
+
+			$qb_where = array('condition' => "{$prefix} {$k} {$not} LIKE {$v}", 'value' => NULL, 'escape' => $escape);
+			$this->qb_where[] = $qb_where;
+			if ($this->qb_caching === TRUE)
+			{
+				$this->qb_cache_where[] = $qb_where;
+				$this->qb_cache_exists[] = 'where';
+			}
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Starts a query group.
+	 *
+	 * @param	string	$not	(Internal use only)
+	 * @param	string	$type	(Internal use only)
+	 * @return	CI_DB_query_builder
+	 */
+	public function group_start($not = '', $type = 'AND ')
+	{
+		$type = $this->_group_get_type($type);
+
+		$this->qb_where_group_started = TRUE;
+		$prefix = (count($this->qb_where) === 0 && count($this->qb_cache_where) === 0) ? '' : $type;
+		$where = array(
+			'condition' => $prefix.$not.str_repeat(' ', ++$this->qb_where_group_count).' (',
+			'value' => NULL,
+			'escape' => FALSE
+		);
+
+		$this->qb_where[] = $where;
+		if ($this->qb_caching)
+		{
+			$this->qb_cache_where[] = $where;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Starts a query group, but ORs the group
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_group_start()
+	{
+		return $this->group_start('', 'OR ');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Starts a query group, but NOTs the group
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function not_group_start()
+	{
+		return $this->group_start('NOT ', 'AND ');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Starts a query group, but OR NOTs the group
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_not_group_start()
+	{
+		return $this->group_start('NOT ', 'OR ');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Ends a query group
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function group_end()
+	{
+		$this->qb_where_group_started = FALSE;
+		$where = array(
+			'condition' => str_repeat(' ', $this->qb_where_group_count--).')',
+			'value' => NULL,
+			'escape' => FALSE
+		);
+
+		$this->qb_where[] = $where;
+		if ($this->qb_caching)
+		{
+			$this->qb_cache_where[] = $where;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Group_get_type
+	 *
+	 * @used-by	group_start()
+	 * @used-by	_like()
+	 * @used-by	_wh()
+	 * @used-by	_where_in()
+	 *
+	 * @param	string	$type
+	 * @return	string
+	 */
+	protected function _group_get_type($type)
+	{
+		if ($this->qb_where_group_started)
+		{
+			$type = '';
+			$this->qb_where_group_started = FALSE;
+		}
+
+		return $type;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * GROUP BY
+	 *
+	 * @param	mixed	$by
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function group_by($by, $escape = NULL)
+	{
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		if (is_string($by))
+		{
+			$by = ($escape === TRUE)
+				? explode(',', $by)
+				: array($by);
+		}
+
+		foreach ($by as $val)
+		{
+			$val = trim($val);
+
+			if ($val !== '')
+			{
+				$val = array('field' => $val, 'escape' => $escape);
+
+				$this->qb_groupby[] = $val;
+				if ($this->qb_caching === TRUE)
+				{
+					$this->qb_cache_groupby[] = $val;
+					$this->qb_cache_exists[] = 'groupby';
+				}
+			}
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * HAVING
+	 *
+	 * Separates multiple calls with 'AND'.
+	 *
+	 * @param	string	$key
+	 * @param	string	$value
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function having($key, $value = NULL, $escape = NULL)
+	{
+		return $this->_wh('qb_having', $key, $value, 'AND ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR HAVING
+	 *
+	 * Separates multiple calls with 'OR'.
+	 *
+	 * @param	string	$key
+	 * @param	string	$value
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_having($key, $value = NULL, $escape = NULL)
+	{
+		return $this->_wh('qb_having', $key, $value, 'OR ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY
+	 *
+	 * @param	string	$orderby
+	 * @param	string	$direction	ASC, DESC or RANDOM
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function order_by($orderby, $direction = '', $escape = NULL)
+	{
+		$direction = strtoupper(trim($direction));
+
+		if ($direction === 'RANDOM')
+		{
+			$direction = '';
+
+			// Do we have a seed value?
+			$orderby = ctype_digit((string) $orderby)
+				? sprintf($this->_random_keyword[1], $orderby)
+				: $this->_random_keyword[0];
+		}
+		elseif (empty($orderby))
+		{
+			return $this;
+		}
+		elseif ($direction !== '')
+		{
+			$direction = in_array($direction, array('ASC', 'DESC'), TRUE) ? ' '.$direction : '';
+		}
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		if ($escape === FALSE)
+		{
+			$qb_orderby[] = array('field' => $orderby, 'direction' => $direction, 'escape' => FALSE);
+		}
+		else
+		{
+			$qb_orderby = array();
+			foreach (explode(',', $orderby) as $field)
+			{
+				$qb_orderby[] = ($direction === '' && preg_match('/\s+(ASC|DESC)$/i', rtrim($field), $match, PREG_OFFSET_CAPTURE))
+					? array('field' => ltrim(substr($field, 0, $match[0][1])), 'direction' => ' '.$match[1][0], 'escape' => TRUE)
+					: array('field' => trim($field), 'direction' => $direction, 'escape' => TRUE);
+			}
+		}
+
+		$this->qb_orderby = array_merge($this->qb_orderby, $qb_orderby);
+		if ($this->qb_caching === TRUE)
+		{
+			$this->qb_cache_orderby = array_merge($this->qb_cache_orderby, $qb_orderby);
+			$this->qb_cache_exists[] = 'orderby';
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * @param	int	$value	LIMIT value
+	 * @param	int	$offset	OFFSET value
+	 * @return	CI_DB_query_builder
+	 */
+	public function limit($value, $offset = 0)
+	{
+		is_null($value) OR $this->qb_limit = (int) $value;
+		empty($offset) OR $this->qb_offset = (int) $offset;
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sets the OFFSET value
+	 *
+	 * @param	int	$offset	OFFSET value
+	 * @return	CI_DB_query_builder
+	 */
+	public function offset($offset)
+	{
+		empty($offset) OR $this->qb_offset = (int) $offset;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT string
+	 *
+	 * Generates a platform-specific LIMIT clause.
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		return $sql.' LIMIT '.($this->qb_offset ? $this->qb_offset.', ' : '').(int) $this->qb_limit;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The "set" function.
+	 *
+	 * Allows key/value pairs to be set for inserting or updating
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	bool
+	 * @return	CI_DB_query_builder
+	 */
+	public function set($key, $value = '', $escape = NULL)
+	{
+		$key = $this->_object_to_array($key);
+
+		if ( ! is_array($key))
+		{
+			$key = array($key => $value);
+		}
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		foreach ($key as $k => $v)
+		{
+			$this->qb_set[$this->protect_identifiers($k, FALSE, $escape)] = ($escape)
+				? $this->escape($v) : $v;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get SELECT query string
+	 *
+	 * Compiles a SELECT query string and returns the sql.
+	 *
+	 * @param	string	the table name to select from (optional)
+	 * @param	bool	TRUE: resets QB values; FALSE: leave QB values alone
+	 * @return	string
+	 */
+	public function get_compiled_select($table = '', $reset = TRUE)
+	{
+		if ($table !== '')
+		{
+			$this->_track_aliases($table);
+			$this->from($table);
+		}
+
+		$select = $this->_compile_select();
+
+		if ($reset === TRUE)
+		{
+			$this->_reset_select();
+		}
+
+		return $select;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get
+	 *
+	 * Compiles the select statement based on the other functions called
+	 * and runs the query
+	 *
+	 * @param	string	the table
+	 * @param	string	the limit clause
+	 * @param	string	the offset clause
+	 * @return	CI_DB_result
+	 */
+	public function get($table = '', $limit = NULL, $offset = NULL)
+	{
+		if ($table !== '')
+		{
+			$this->_track_aliases($table);
+			$this->from($table);
+		}
+
+		if ( ! empty($limit))
+		{
+			$this->limit($limit, $offset);
+		}
+
+		$result = $this->query($this->_compile_select());
+		$this->_reset_select();
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Count All Results" query
+	 *
+	 * Generates a platform-specific query string that counts all records
+	 * returned by an Query Builder query.
+	 *
+	 * @param	string
+	 * @param	bool	the reset clause
+	 * @return	int
+	 */
+	public function count_all_results($table = '', $reset = TRUE)
+	{
+		if ($table !== '')
+		{
+			$this->_track_aliases($table);
+			$this->from($table);
+		}
+
+		// ORDER BY usage is often problematic here (most notably
+		// on Microsoft SQL Server) and ultimately unnecessary
+		// for selecting COUNT(*) ...
+		$qb_orderby       = $this->qb_orderby;
+		$qb_cache_orderby = $this->qb_cache_orderby;
+		$this->qb_orderby = $this->qb_cache_orderby = array();
+
+		$result = ($this->qb_distinct === TRUE OR ! empty($this->qb_groupby) OR ! empty($this->qb_cache_groupby) OR ! empty($this->qb_having) OR $this->qb_limit OR $this->qb_offset)
+			? $this->query($this->_count_string.$this->protect_identifiers('numrows')."\nFROM (\n".$this->_compile_select()."\n) CI_count_all_results")
+			: $this->query($this->_compile_select($this->_count_string.$this->protect_identifiers('numrows')));
+
+		if ($reset === TRUE)
+		{
+			$this->_reset_select();
+		}
+		else
+		{
+			$this->qb_orderby       = $qb_orderby;
+			$this->qb_cache_orderby = $qb_cache_orderby;
+		}
+
+		if ($result->num_rows() === 0)
+		{
+			return 0;
+		}
+
+		$row = $result->row();
+		return (int) $row->numrows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * get_where()
+	 *
+	 * Allows the where clause, limit and offset to be added directly
+	 *
+	 * @param	string	$table
+	 * @param	string	$where
+	 * @param	int	$limit
+	 * @param	int	$offset
+	 * @return	CI_DB_result
+	 */
+	public function get_where($table = '', $where = NULL, $limit = NULL, $offset = NULL)
+	{
+		if ($table !== '')
+		{
+			$this->from($table);
+		}
+
+		if ($where !== NULL)
+		{
+			$this->where($where);
+		}
+
+		if ( ! empty($limit))
+		{
+			$this->limit($limit, $offset);
+		}
+
+		$result = $this->query($this->_compile_select());
+		$this->_reset_select();
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert_Batch
+	 *
+	 * Compiles batch insert strings and runs the queries
+	 *
+	 * @param	string	$table	Table to insert into
+	 * @param	array	$set 	An associative array of insert values
+	 * @param	bool	$escape	Whether to escape values and identifiers
+	 * @return	int	Number of rows inserted or FALSE on failure
+	 */
+	public function insert_batch($table, $set = NULL, $escape = NULL, $batch_size = 100)
+	{
+		if ($set === NULL)
+		{
+			if (empty($this->qb_set))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
+			}
+		}
+		else
+		{
+			if (empty($set))
+			{
+				return ($this->db_debug) ? $this->display_error('insert_batch() called with no data') : FALSE;
+			}
+
+			$this->set_insert_batch($set, '', $escape);
+		}
+
+		if (strlen($table) === 0)
+		{
+			if ( ! isset($this->qb_from[0]))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+			}
+
+			$table = $this->qb_from[0];
+		}
+
+		// Batch this baby
+		$affected_rows = 0;
+		for ($i = 0, $total = count($this->qb_set); $i < $total; $i += $batch_size)
+		{
+			if ($this->query($this->_insert_batch($this->protect_identifiers($table, TRUE, $escape, FALSE), $this->qb_keys, array_slice($this->qb_set, $i, $batch_size))))
+			{
+				$affected_rows += $this->affected_rows();
+			}
+		}
+
+		$this->_reset_write();
+		return $affected_rows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		return 'INSERT INTO '.$table.' ('.implode(', ', $keys).') VALUES '.implode(', ', $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The "set_insert_batch" function.  Allows key/value pairs to be set for batch inserts
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	bool
+	 * @return	CI_DB_query_builder
+	 */
+	public function set_insert_batch($key, $value = '', $escape = NULL)
+	{
+		$key = $this->_object_to_array_batch($key);
+
+		if ( ! is_array($key))
+		{
+			$key = array($key => $value);
+		}
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		$keys = array_keys($this->_object_to_array(reset($key)));
+		sort($keys);
+
+		foreach ($key as $row)
+		{
+			$row = $this->_object_to_array($row);
+			if (count(array_diff($keys, array_keys($row))) > 0 OR count(array_diff(array_keys($row), $keys)) > 0)
+			{
+				// batch function above returns an error on an empty array
+				$this->qb_set[] = array();
+				return;
+			}
+
+			ksort($row); // puts $row in the same order as our keys
+
+			if ($escape !== FALSE)
+			{
+				$clean = array();
+				foreach ($row as $value)
+				{
+					$clean[] = $this->escape($value);
+				}
+
+				$row = $clean;
+			}
+
+			$this->qb_set[] = '('.implode(',', $row).')';
+		}
+
+		foreach ($keys as $k)
+		{
+			$this->qb_keys[] = $this->protect_identifiers($k, FALSE, $escape);
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get INSERT query string
+	 *
+	 * Compiles an insert query and returns the sql
+	 *
+	 * @param	string	the table to insert into
+	 * @param	bool	TRUE: reset QB values; FALSE: leave QB values alone
+	 * @return	string
+	 */
+	public function get_compiled_insert($table = '', $reset = TRUE)
+	{
+		if ($this->_validate_insert($table) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$sql = $this->_insert(
+			$this->protect_identifiers(
+				$this->qb_from[0], TRUE, NULL, FALSE
+			),
+			array_keys($this->qb_set),
+			array_values($this->qb_set)
+		);
+
+		if ($reset === TRUE)
+		{
+			$this->_reset_write();
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert
+	 *
+	 * Compiles an insert string and runs the query
+	 *
+	 * @param	string	the table to insert data into
+	 * @param	array	an associative array of insert values
+	 * @param	bool	$escape	Whether to escape values and identifiers
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function insert($table = '', $set = NULL, $escape = NULL)
+	{
+		if ($set !== NULL)
+		{
+			$this->set($set, '', $escape);
+		}
+
+		if ($this->_validate_insert($table) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$sql = $this->_insert(
+			$this->protect_identifiers(
+				$this->qb_from[0], TRUE, $escape, FALSE
+			),
+			array_keys($this->qb_set),
+			array_values($this->qb_set)
+		);
+
+		$this->_reset_write();
+		return $this->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate Insert
+	 *
+	 * This method is used by both insert() and get_compiled_insert() to
+	 * validate that the there data is actually being set and that table
+	 * has been chosen to be inserted into.
+	 *
+	 * @param	string	the table to insert data into
+	 * @return	string
+	 */
+	protected function _validate_insert($table = '')
+	{
+		if (count($this->qb_set) === 0)
+		{
+			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
+		}
+
+		if ($table !== '')
+		{
+			$this->qb_from[0] = $table;
+		}
+		elseif ( ! isset($this->qb_from[0]))
+		{
+			return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Replace
+	 *
+	 * Compiles an replace into string and runs the query
+	 *
+	 * @param	string	the table to replace data into
+	 * @param	array	an associative array of insert values
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function replace($table = '', $set = NULL)
+	{
+		if ($set !== NULL)
+		{
+			$this->set($set);
+		}
+
+		if (count($this->qb_set) === 0)
+		{
+			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
+		}
+
+		if ($table === '')
+		{
+			if ( ! isset($this->qb_from[0]))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+			}
+
+			$table = $this->qb_from[0];
+		}
+
+		$sql = $this->_replace($this->protect_identifiers($table, TRUE, NULL, FALSE), array_keys($this->qb_set), array_values($this->qb_set));
+
+		$this->_reset_write();
+		return $this->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Replace statement
+	 *
+	 * Generates a platform-specific replace string from the supplied data
+	 *
+	 * @param	string	the table name
+	 * @param	array	the insert keys
+	 * @param	array	the insert values
+	 * @return	string
+	 */
+	protected function _replace($table, $keys, $values)
+	{
+		return 'REPLACE INTO '.$table.' ('.implode(', ', $keys).') VALUES ('.implode(', ', $values).')';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FROM tables
+	 *
+	 * Groups tables in FROM clauses if needed, so there is no confusion
+	 * about operator precedence.
+	 *
+	 * Note: This is only used (and overridden) by MySQL and CUBRID.
+	 *
+	 * @return	string
+	 */
+	protected function _from_tables()
+	{
+		return implode(', ', $this->qb_from);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get UPDATE query string
+	 *
+	 * Compiles an update query and returns the sql
+	 *
+	 * @param	string	the table to update
+	 * @param	bool	TRUE: reset QB values; FALSE: leave QB values alone
+	 * @return	string
+	 */
+	public function get_compiled_update($table = '', $reset = TRUE)
+	{
+		// Combine any cached components with the current statements
+		$this->_merge_cache();
+
+		if ($this->_validate_update($table) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$sql = $this->_update($this->qb_from[0], $this->qb_set);
+
+		if ($reset === TRUE)
+		{
+			$this->_reset_write();
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * UPDATE
+	 *
+	 * Compiles an update string and runs the query.
+	 *
+	 * @param	string	$table
+	 * @param	array	$set	An associative array of update values
+	 * @param	mixed	$where
+	 * @param	int	$limit
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function update($table = '', $set = NULL, $where = NULL, $limit = NULL)
+	{
+		// Combine any cached components with the current statements
+		$this->_merge_cache();
+
+		if ($set !== NULL)
+		{
+			$this->set($set);
+		}
+
+		if ($this->_validate_update($table) === FALSE)
+		{
+			return FALSE;
+		}
+
+		if ($where !== NULL)
+		{
+			$this->where($where);
+		}
+
+		if ( ! empty($limit))
+		{
+			$this->limit($limit);
+		}
+
+		$sql = $this->_update($this->qb_from[0], $this->qb_set);
+		$this->_reset_write();
+		return $this->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate Update
+	 *
+	 * This method is used by both update() and get_compiled_update() to
+	 * validate that data is actually being set and that a table has been
+	 * chosen to be update.
+	 *
+	 * @param	string	the table to update data on
+	 * @return	bool
+	 */
+	protected function _validate_update($table)
+	{
+		if (count($this->qb_set) === 0)
+		{
+			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
+		}
+
+		if ($table !== '')
+		{
+			$this->qb_from = array($this->protect_identifiers($table, TRUE, NULL, FALSE));
+		}
+		elseif ( ! isset($this->qb_from[0]))
+		{
+			return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update_Batch
+	 *
+	 * Compiles an update string and runs the query
+	 *
+	 * @param	string	the table to retrieve the results from
+	 * @param	array	an associative array of update values
+	 * @param	string	the where key
+	 * @return	int	number of rows affected or FALSE on failure
+	 */
+	public function update_batch($table, $set = NULL, $index = NULL, $batch_size = 100)
+	{
+		// Combine any cached components with the current statements
+		$this->_merge_cache();
+
+		if ($index === NULL)
+		{
+			return ($this->db_debug) ? $this->display_error('db_must_use_index') : FALSE;
+		}
+
+		if ($set === NULL)
+		{
+			if (empty($this->qb_set_ub))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
+			}
+		}
+		else
+		{
+			if (empty($set))
+			{
+				return ($this->db_debug) ? $this->display_error('update_batch() called with no data') : FALSE;
+			}
+
+			$this->set_update_batch($set, $index);
+		}
+
+		if (strlen($table) === 0)
+		{
+			if ( ! isset($this->qb_from[0]))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+			}
+
+			$table = $this->qb_from[0];
+		}
+
+		// Batch this baby
+		$affected_rows = 0;
+		for ($i = 0, $total = count($this->qb_set_ub); $i < $total; $i += $batch_size)
+		{
+			if ($this->query($this->_update_batch($this->protect_identifiers($table, TRUE, NULL, FALSE), array_slice($this->qb_set_ub, $i, $batch_size), $index)))
+			{
+				$affected_rows += $this->affected_rows();
+			}
+
+			$this->qb_where = array();
+		}
+
+		$this->_reset_write();
+		return $affected_rows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update_Batch statement
+	 *
+	 * Generates a platform-specific batch update string from the supplied data
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$values	Update data
+	 * @param	string	$index	WHERE key
+	 * @return	string
+	 */
+	protected function _update_batch($table, $values, $index)
+	{
+		$ids = array();
+		foreach ($values as $key => $val)
+		{
+			$ids[] = $val[$index]['value'];
+
+			foreach (array_keys($val) as $field)
+			{
+				if ($field !== $index)
+				{
+					$final[$val[$field]['field']][] = 'WHEN '.$val[$index]['field'].' = '.$val[$index]['value'].' THEN '.$val[$field]['value'];
+				}
+			}
+		}
+
+		$cases = '';
+		foreach ($final as $k => $v)
+		{
+			$cases .= $k." = CASE \n"
+				.implode("\n", $v)."\n"
+				.'ELSE '.$k.' END, ';
+		}
+
+		$this->where($val[$index]['field'].' IN('.implode(',', $ids).')', NULL, FALSE);
+
+		return 'UPDATE '.$table.' SET '.substr($cases, 0, -2).$this->_compile_wh('qb_where');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The "set_update_batch" function.  Allows key/value pairs to be set for batch updating
+	 *
+	 * @param	array
+	 * @param	string
+	 * @param	bool
+	 * @return	CI_DB_query_builder
+	 */
+	public function set_update_batch($key, $index = '', $escape = NULL)
+	{
+		$key = $this->_object_to_array_batch($key);
+
+		if ( ! is_array($key))
+		{
+			// @todo error
+		}
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		foreach ($key as $k => $v)
+		{
+			$index_set = FALSE;
+			$clean = array();
+			foreach ($v as $k2 => $v2)
+			{
+				if ($k2 === $index)
+				{
+					$index_set = TRUE;
+				}
+
+				$clean[$k2] = array(
+					'field'  => $this->protect_identifiers($k2, FALSE, $escape),
+					'value'  => ($escape === FALSE ? $v2 : $this->escape($v2))
+				);
+			}
+
+			if ($index_set === FALSE)
+			{
+				return $this->display_error('db_batch_missing_index');
+			}
+
+			$this->qb_set_ub[] = $clean;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Empty Table
+	 *
+	 * Compiles a delete string and runs "DELETE FROM table"
+	 *
+	 * @param	string	the table to empty
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function empty_table($table = '')
+	{
+		if ($table === '')
+		{
+			if ( ! isset($this->qb_from[0]))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+			}
+
+			$table = $this->qb_from[0];
+		}
+		else
+		{
+			$table = $this->protect_identifiers($table, TRUE, NULL, FALSE);
+		}
+
+		$sql = $this->_delete($table);
+		$this->_reset_write();
+		return $this->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate
+	 *
+	 * Compiles a truncate string and runs the query
+	 * If the database does not support the truncate() command
+	 * This function maps to "DELETE FROM table"
+	 *
+	 * @param	string	the table to truncate
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function truncate($table = '')
+	{
+		if ($table === '')
+		{
+			if ( ! isset($this->qb_from[0]))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+			}
+
+			$table = $this->qb_from[0];
+		}
+		else
+		{
+			$table = $this->protect_identifiers($table, TRUE, NULL, FALSE);
+		}
+
+		$sql = $this->_truncate($table);
+		$this->_reset_write();
+		return $this->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the truncate() command,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	the table name
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get DELETE query string
+	 *
+	 * Compiles a delete query string and returns the sql
+	 *
+	 * @param	string	the table to delete from
+	 * @param	bool	TRUE: reset QB values; FALSE: leave QB values alone
+	 * @return	string
+	 */
+	public function get_compiled_delete($table = '', $reset = TRUE)
+	{
+		$this->return_delete_sql = TRUE;
+		$sql = $this->delete($table, '', NULL, $reset);
+		$this->return_delete_sql = FALSE;
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete
+	 *
+	 * Compiles a delete string and runs the query
+	 *
+	 * @param	mixed	the table(s) to delete from. String or array
+	 * @param	mixed	the where clause
+	 * @param	mixed	the limit clause
+	 * @param	bool
+	 * @return	mixed
+	 */
+	public function delete($table = '', $where = '', $limit = NULL, $reset_data = TRUE)
+	{
+		// Combine any cached components with the current statements
+		$this->_merge_cache();
+
+		if ($table === '')
+		{
+			if ( ! isset($this->qb_from[0]))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+			}
+
+			$table = $this->qb_from[0];
+		}
+		elseif (is_array($table))
+		{
+			empty($where) && $reset_data = FALSE;
+
+			foreach ($table as $single_table)
+			{
+				$this->delete($single_table, $where, $limit, $reset_data);
+			}
+
+			return;
+		}
+		else
+		{
+			$table = $this->protect_identifiers($table, TRUE, NULL, FALSE);
+		}
+
+		if ($where !== '')
+		{
+			$this->where($where);
+		}
+
+		if ( ! empty($limit))
+		{
+			$this->limit($limit);
+		}
+
+		if (count($this->qb_where) === 0)
+		{
+			return ($this->db_debug) ? $this->display_error('db_del_must_use_where') : FALSE;
+		}
+
+		$sql = $this->_delete($table);
+		if ($reset_data)
+		{
+			$this->_reset_write();
+		}
+
+		return ($this->return_delete_sql === TRUE) ? $sql : $this->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	the table name
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		return 'DELETE FROM '.$table.$this->_compile_wh('qb_where')
+			.($this->qb_limit !== FALSE ? ' LIMIT '.$this->qb_limit : '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * DB Prefix
+	 *
+	 * Prepends a database prefix if one exists in configuration
+	 *
+	 * @param	string	the table
+	 * @return	string
+	 */
+	public function dbprefix($table = '')
+	{
+		if ($table === '')
+		{
+			$this->display_error('db_table_name_required');
+		}
+
+		return $this->dbprefix.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set DB Prefix
+	 *
+	 * Set's the DB Prefix to something new without needing to reconnect
+	 *
+	 * @param	string	the prefix
+	 * @return	string
+	 */
+	public function set_dbprefix($prefix = '')
+	{
+		return $this->dbprefix = $prefix;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Track Aliases
+	 *
+	 * Used to track SQL statements written with aliased tables.
+	 *
+	 * @param	string	The table to inspect
+	 * @return	string
+	 */
+	protected function _track_aliases($table)
+	{
+		if (is_array($table))
+		{
+			foreach ($table as $t)
+			{
+				$this->_track_aliases($t);
+			}
+			return;
+		}
+
+		// Does the string contain a comma?  If so, we need to separate
+		// the string into discreet statements
+		if (strpos($table, ',') !== FALSE)
+		{
+			return $this->_track_aliases(explode(',', $table));
+		}
+
+		// if a table alias is used we can recognize it by a space
+		if (strpos($table, ' ') !== FALSE)
+		{
+			// if the alias is written with the AS keyword, remove it
+			$table = preg_replace('/\s+AS\s+/i', ' ', $table);
+
+			// Grab the alias
+			$table = trim(strrchr($table, ' '));
+
+			// Store the alias, if it doesn't already exist
+			if ( ! in_array($table, $this->qb_aliased_tables, TRUE))
+			{
+				$this->qb_aliased_tables[] = $table;
+				if ($this->qb_caching === TRUE && ! in_array($table, $this->qb_cache_aliased_tables, TRUE))
+				{
+					$this->qb_cache_aliased_tables[] = $table;
+					$this->qb_cache_exists[] = 'aliased_tables';
+				}
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile the SELECT statement
+	 *
+	 * Generates a query string based on which functions were used.
+	 * Should not be called directly.
+	 *
+	 * @param	bool	$select_override
+	 * @return	string
+	 */
+	protected function _compile_select($select_override = FALSE)
+	{
+		// Combine any cached components with the current statements
+		$this->_merge_cache();
+
+		// Write the "select" portion of the query
+		if ($select_override !== FALSE)
+		{
+			$sql = $select_override;
+		}
+		else
+		{
+			$sql = ( ! $this->qb_distinct) ? 'SELECT ' : 'SELECT DISTINCT ';
+
+			if (count($this->qb_select) === 0)
+			{
+				$sql .= '*';
+			}
+			else
+			{
+				// Cycle through the "select" portion of the query and prep each column name.
+				// The reason we protect identifiers here rather than in the select() function
+				// is because until the user calls the from() function we don't know if there are aliases
+				foreach ($this->qb_select as $key => $val)
+				{
+					$no_escape = isset($this->qb_no_escape[$key]) ? $this->qb_no_escape[$key] : NULL;
+					$this->qb_select[$key] = $this->protect_identifiers($val, FALSE, $no_escape);
+				}
+
+				$sql .= implode(', ', $this->qb_select);
+			}
+		}
+
+		// Write the "FROM" portion of the query
+		if (count($this->qb_from) > 0)
+		{
+			$sql .= "\nFROM ".$this->_from_tables();
+		}
+
+		// Write the "JOIN" portion of the query
+		if (count($this->qb_join) > 0)
+		{
+			$sql .= "\n".implode("\n", $this->qb_join);
+		}
+
+		$sql .= $this->_compile_wh('qb_where')
+			.$this->_compile_group_by()
+			.$this->_compile_wh('qb_having')
+			.$this->_compile_order_by(); // ORDER BY
+
+		// LIMIT
+		if ($this->qb_limit !== FALSE OR $this->qb_offset)
+		{
+			return $this->_limit($sql."\n");
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile WHERE, HAVING statements
+	 *
+	 * Escapes identifiers in WHERE and HAVING statements at execution time.
+	 *
+	 * Required so that aliases are tracked properly, regardless of whether
+	 * where(), or_where(), having(), or_having are called prior to from(),
+	 * join() and dbprefix is added only if needed.
+	 *
+	 * @param	string	$qb_key	'qb_where' or 'qb_having'
+	 * @return	string	SQL statement
+	 */
+	protected function _compile_wh($qb_key)
+	{
+		if (count($this->$qb_key) > 0)
+		{
+			for ($i = 0, $c = count($this->$qb_key); $i < $c; $i++)
+			{
+				// Is this condition already compiled?
+				if (is_string($this->{$qb_key}[$i]))
+				{
+					continue;
+				}
+				elseif ($this->{$qb_key}[$i]['escape'] === FALSE)
+				{
+					$this->{$qb_key}[$i] = $this->{$qb_key}[$i]['condition'].(isset($this->{$qb_key}[$i]['value']) ? ' '.$this->{$qb_key}[$i]['value'] : '');
+					continue;
+				}
+
+				// Split multiple conditions
+				$conditions = preg_split(
+					'/((?:^|\s+)AND\s+|(?:^|\s+)OR\s+)/i',
+					$this->{$qb_key}[$i]['condition'],
+					-1,
+					PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY
+				);
+
+				for ($ci = 0, $cc = count($conditions); $ci < $cc; $ci++)
+				{
+					if (($op = $this->_get_operator($conditions[$ci])) === FALSE
+						OR ! preg_match('/^(\(?)(.*)('.preg_quote($op, '/').')\s*(.*(?<!\)))?(\)?)$/i', $conditions[$ci], $matches))
+					{
+						continue;
+					}
+
+					// $matches = array(
+					//	0 => '(test <= foo)',	/* the whole thing */
+					//	1 => '(',		/* optional */
+					//	2 => 'test',		/* the field name */
+					//	3 => ' <= ',		/* $op */
+					//	4 => 'foo',		/* optional, if $op is e.g. 'IS NULL' */
+					//	5 => ')'		/* optional */
+					// );
+
+					if ( ! empty($matches[4]))
+					{
+						$this->_is_literal($matches[4]) OR $matches[4] = $this->protect_identifiers(trim($matches[4]));
+						$matches[4] = ' '.$matches[4];
+					}
+
+					$conditions[$ci] = $matches[1].$this->protect_identifiers(trim($matches[2]))
+						.' '.trim($matches[3]).$matches[4].$matches[5];
+				}
+
+				$this->{$qb_key}[$i] = implode('', $conditions).(isset($this->{$qb_key}[$i]['value']) ? ' '.$this->{$qb_key}[$i]['value'] : '');
+			}
+
+			return ($qb_key === 'qb_having' ? "\nHAVING " : "\nWHERE ")
+				.implode("\n", $this->$qb_key);
+		}
+
+		return '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile GROUP BY
+	 *
+	 * Escapes identifiers in GROUP BY statements at execution time.
+	 *
+	 * Required so that aliases are tracked properly, regardless of whether
+	 * group_by() is called prior to from(), join() and dbprefix is added
+	 * only if needed.
+	 *
+	 * @return	string	SQL statement
+	 */
+	protected function _compile_group_by()
+	{
+		if (count($this->qb_groupby) > 0)
+		{
+			for ($i = 0, $c = count($this->qb_groupby); $i < $c; $i++)
+			{
+				// Is it already compiled?
+				if (is_string($this->qb_groupby[$i]))
+				{
+					continue;
+				}
+
+				$this->qb_groupby[$i] = ($this->qb_groupby[$i]['escape'] === FALSE OR $this->_is_literal($this->qb_groupby[$i]['field']))
+					? $this->qb_groupby[$i]['field']
+					: $this->protect_identifiers($this->qb_groupby[$i]['field']);
+			}
+
+			return "\nGROUP BY ".implode(', ', $this->qb_groupby);
+		}
+
+		return '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile ORDER BY
+	 *
+	 * Escapes identifiers in ORDER BY statements at execution time.
+	 *
+	 * Required so that aliases are tracked properly, regardless of whether
+	 * order_by() is called prior to from(), join() and dbprefix is added
+	 * only if needed.
+	 *
+	 * @return	string	SQL statement
+	 */
+	protected function _compile_order_by()
+	{
+		if (empty($this->qb_orderby))
+		{
+			return '';
+		}
+
+		for ($i = 0, $c = count($this->qb_orderby); $i < $c; $i++)
+		{
+			if (is_string($this->qb_orderby[$i]))
+			{
+				continue;
+			}
+
+			if ($this->qb_orderby[$i]['escape'] !== FALSE && ! $this->_is_literal($this->qb_orderby[$i]['field']))
+			{
+				$this->qb_orderby[$i]['field'] = $this->protect_identifiers($this->qb_orderby[$i]['field']);
+			}
+
+			$this->qb_orderby[$i] = $this->qb_orderby[$i]['field'].$this->qb_orderby[$i]['direction'];
+		}
+
+		return "\nORDER BY ".implode(', ', $this->qb_orderby);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Object to Array
+	 *
+	 * Takes an object as input and converts the class variables to array key/vals
+	 *
+	 * @param	object
+	 * @return	array
+	 */
+	protected function _object_to_array($object)
+	{
+		if ( ! is_object($object))
+		{
+			return $object;
+		}
+
+		$array = array();
+		foreach (get_object_vars($object) as $key => $val)
+		{
+			// There are some built in keys we need to ignore for this conversion
+			if ( ! is_object($val) && ! is_array($val) && $key !== '_parent_name')
+			{
+				$array[$key] = $val;
+			}
+		}
+
+		return $array;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Object to Array
+	 *
+	 * Takes an object as input and converts the class variables to array key/vals
+	 *
+	 * @param	object
+	 * @return	array
+	 */
+	protected function _object_to_array_batch($object)
+	{
+		if ( ! is_object($object))
+		{
+			return $object;
+		}
+
+		$array = array();
+		$out = get_object_vars($object);
+		$fields = array_keys($out);
+
+		foreach ($fields as $val)
+		{
+			// There are some built in keys we need to ignore for this conversion
+			if ($val !== '_parent_name')
+			{
+				$i = 0;
+				foreach ($out[$val] as $data)
+				{
+					$array[$i++][$val] = $data;
+				}
+			}
+		}
+
+		return $array;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Start Cache
+	 *
+	 * Starts QB caching
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function start_cache()
+	{
+		$this->qb_caching = TRUE;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Stop Cache
+	 *
+	 * Stops QB caching
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function stop_cache()
+	{
+		$this->qb_caching = FALSE;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Flush Cache
+	 *
+	 * Empties the QB cache
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function flush_cache()
+	{
+		$this->_reset_run(array(
+			'qb_cache_select'		=> array(),
+			'qb_cache_from'			=> array(),
+			'qb_cache_join'			=> array(),
+			'qb_cache_where'		=> array(),
+			'qb_cache_groupby'		=> array(),
+			'qb_cache_having'		=> array(),
+			'qb_cache_orderby'		=> array(),
+			'qb_cache_set'			=> array(),
+			'qb_cache_exists'		=> array(),
+			'qb_cache_no_escape'	=> array(),
+			'qb_cache_aliased_tables'	=> array()
+		));
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Merge Cache
+	 *
+	 * When called, this function merges any cached QB arrays with
+	 * locally called ones.
+	 *
+	 * @return	void
+	 */
+	protected function _merge_cache()
+	{
+		if (count($this->qb_cache_exists) === 0)
+		{
+			return;
+		}
+		elseif (in_array('select', $this->qb_cache_exists, TRUE))
+		{
+			$qb_no_escape = $this->qb_cache_no_escape;
+		}
+
+		foreach (array_unique($this->qb_cache_exists) as $val) // select, from, etc.
+		{
+			$qb_variable	= 'qb_'.$val;
+			$qb_cache_var	= 'qb_cache_'.$val;
+			$qb_new 	= $this->$qb_cache_var;
+
+			for ($i = 0, $c = count($this->$qb_variable); $i < $c; $i++)
+			{
+				if ( ! in_array($this->{$qb_variable}[$i], $qb_new, TRUE))
+				{
+					$qb_new[] = $this->{$qb_variable}[$i];
+					if ($val === 'select')
+					{
+						$qb_no_escape[] = $this->qb_no_escape[$i];
+					}
+				}
+			}
+
+			$this->$qb_variable = $qb_new;
+			if ($val === 'select')
+			{
+				$this->qb_no_escape = $qb_no_escape;
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is literal
+	 *
+	 * Determines if a string represents a literal value or a field name
+	 *
+	 * @param	string	$str
+	 * @return	bool
+	 */
+	protected function _is_literal($str)
+	{
+		$str = trim($str);
+
+		if (empty($str) OR ctype_digit($str) OR (string) (float) $str === $str OR in_array(strtoupper($str), array('TRUE', 'FALSE'), TRUE))
+		{
+			return TRUE;
+		}
+
+		static $_str;
+
+		if (empty($_str))
+		{
+			$_str = ($this->_escape_char !== '"')
+				? array('"', "'") : array("'");
+		}
+
+		return in_array($str[0], $_str, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reset Query Builder values.
+	 *
+	 * Publicly-visible method to reset the QB values.
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function reset_query()
+	{
+		$this->_reset_select();
+		$this->_reset_write();
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Resets the query builder values.  Called by the get() function
+	 *
+	 * @param	array	An array of fields to reset
+	 * @return	void
+	 */
+	protected function _reset_run($qb_reset_items)
+	{
+		foreach ($qb_reset_items as $item => $default_value)
+		{
+			$this->$item = $default_value;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Resets the query builder values.  Called by the get() function
+	 *
+	 * @return	void
+	 */
+	protected function _reset_select()
+	{
+		$this->_reset_run(array(
+			'qb_select'		=> array(),
+			'qb_from'		=> array(),
+			'qb_join'		=> array(),
+			'qb_where'		=> array(),
+			'qb_groupby'		=> array(),
+			'qb_having'		=> array(),
+			'qb_orderby'		=> array(),
+			'qb_aliased_tables'	=> array(),
+			'qb_no_escape'		=> array(),
+			'qb_distinct'		=> FALSE,
+			'qb_limit'		=> FALSE,
+			'qb_offset'		=> FALSE
+		));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Resets the query builder "write" values.
+	 *
+	 * Called by the insert() update() insert_batch() update_batch() and delete() functions
+	 *
+	 * @return	void
+	 */
+	protected function _reset_write()
+	{
+		$this->_reset_run(array(
+			'qb_set'	=> array(),
+			'qb_set_ub'	=> array(),
+			'qb_from'	=> array(),
+			'qb_join'	=> array(),
+			'qb_where'	=> array(),
+			'qb_orderby'	=> array(),
+			'qb_keys'	=> array(),
+			'qb_limit'	=> FALSE
+		));
+	}
+
+}
diff --git a/system/database/DB_result.php b/system/database/DB_result.php
new file mode 100644
index 00000000..b481de47
--- /dev/null
+++ b/system/database/DB_result.php
@@ -0,0 +1,665 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Database Result Class
+ *
+ * This is the platform-independent result class.
+ * This class will not be called directly. Rather, the adapter
+ * class for the specific database will extend and instantiate it.
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_result {
+
+	/**
+	 * Connection ID
+	 *
+	 * @var	resource|object
+	 */
+	public $conn_id;
+
+	/**
+	 * Result ID
+	 *
+	 * @var	resource|object
+	 */
+	public $result_id;
+
+	/**
+	 * Result Array
+	 *
+	 * @var	array[]
+	 */
+	public $result_array			= array();
+
+	/**
+	 * Result Object
+	 *
+	 * @var	object[]
+	 */
+	public $result_object			= array();
+
+	/**
+	 * Custom Result Object
+	 *
+	 * @var	object[]
+	 */
+	public $custom_result_object		= array();
+
+	/**
+	 * Current Row index
+	 *
+	 * @var	int
+	 */
+	public $current_row			= 0;
+
+	/**
+	 * Number of rows
+	 *
+	 * @var	int
+	 */
+	public $num_rows;
+
+	/**
+	 * Row data
+	 *
+	 * @var	array
+	 */
+	public $row_data;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	object	$driver_object
+	 * @return	void
+	 */
+	public function __construct(&$driver_object)
+	{
+		$this->conn_id = $driver_object->conn_id;
+		$this->result_id = $driver_object->result_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		if (is_int($this->num_rows))
+		{
+			return $this->num_rows;
+		}
+		elseif (count($this->result_array) > 0)
+		{
+			return $this->num_rows = count($this->result_array);
+		}
+		elseif (count($this->result_object) > 0)
+		{
+			return $this->num_rows = count($this->result_object);
+		}
+
+		return $this->num_rows = count($this->result_array());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Query result. Acts as a wrapper function for the following functions.
+	 *
+	 * @param	string	$type	'object', 'array' or a custom class name
+	 * @return	array
+	 */
+	public function result($type = 'object')
+	{
+		if ($type === 'array')
+		{
+			return $this->result_array();
+		}
+		elseif ($type === 'object')
+		{
+			return $this->result_object();
+		}
+
+		return $this->custom_result_object($type);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Custom query result.
+	 *
+	 * @param	string	$class_name
+	 * @return	array
+	 */
+	public function custom_result_object($class_name)
+	{
+		if (isset($this->custom_result_object[$class_name]))
+		{
+			return $this->custom_result_object[$class_name];
+		}
+		elseif ( ! $this->result_id OR $this->num_rows === 0)
+		{
+			return array();
+		}
+
+		// Don't fetch the result set again if we already have it
+		$_data = NULL;
+		if (($c = count($this->result_array)) > 0)
+		{
+			$_data = 'result_array';
+		}
+		elseif (($c = count($this->result_object)) > 0)
+		{
+			$_data = 'result_object';
+		}
+
+		if ($_data !== NULL)
+		{
+			for ($i = 0; $i < $c; $i++)
+			{
+				$this->custom_result_object[$class_name][$i] = new $class_name();
+
+				foreach ($this->{$_data}[$i] as $key => $value)
+				{
+					$this->custom_result_object[$class_name][$i]->$key = $value;
+				}
+			}
+
+			return $this->custom_result_object[$class_name];
+		}
+
+		is_null($this->row_data) OR $this->data_seek(0);
+		$this->custom_result_object[$class_name] = array();
+
+		while ($row = $this->_fetch_object($class_name))
+		{
+			$this->custom_result_object[$class_name][] = $row;
+		}
+
+		return $this->custom_result_object[$class_name];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Query result. "object" version.
+	 *
+	 * @return	array
+	 */
+	public function result_object()
+	{
+		if (count($this->result_object) > 0)
+		{
+			return $this->result_object;
+		}
+
+		// In the event that query caching is on, the result_id variable
+		// will not be a valid resource so we'll simply return an empty
+		// array.
+		if ( ! $this->result_id OR $this->num_rows === 0)
+		{
+			return array();
+		}
+
+		if (($c = count($this->result_array)) > 0)
+		{
+			for ($i = 0; $i < $c; $i++)
+			{
+				$this->result_object[$i] = (object) $this->result_array[$i];
+			}
+
+			return $this->result_object;
+		}
+
+		is_null($this->row_data) OR $this->data_seek(0);
+		while ($row = $this->_fetch_object())
+		{
+			$this->result_object[] = $row;
+		}
+
+		return $this->result_object;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Query result. "array" version.
+	 *
+	 * @return	array
+	 */
+	public function result_array()
+	{
+		if (count($this->result_array) > 0)
+		{
+			return $this->result_array;
+		}
+
+		// In the event that query caching is on, the result_id variable
+		// will not be a valid resource so we'll simply return an empty
+		// array.
+		if ( ! $this->result_id OR $this->num_rows === 0)
+		{
+			return array();
+		}
+
+		if (($c = count($this->result_object)) > 0)
+		{
+			for ($i = 0; $i < $c; $i++)
+			{
+				$this->result_array[$i] = (array) $this->result_object[$i];
+			}
+
+			return $this->result_array;
+		}
+
+		is_null($this->row_data) OR $this->data_seek(0);
+		while ($row = $this->_fetch_assoc())
+		{
+			$this->result_array[] = $row;
+		}
+
+		return $this->result_array;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Row
+	 *
+	 * A wrapper method.
+	 *
+	 * @param	mixed	$n
+	 * @param	string	$type	'object' or 'array'
+	 * @return	mixed
+	 */
+	public function row($n = 0, $type = 'object')
+	{
+		if ( ! is_numeric($n))
+		{
+			// We cache the row data for subsequent uses
+			is_array($this->row_data) OR $this->row_data = $this->row_array(0);
+
+			// array_key_exists() instead of isset() to allow for NULL values
+			if (empty($this->row_data) OR ! array_key_exists($n, $this->row_data))
+			{
+				return NULL;
+			}
+
+			return $this->row_data[$n];
+		}
+
+		if ($type === 'object') return $this->row_object($n);
+		elseif ($type === 'array') return $this->row_array($n);
+
+		return $this->custom_row_object($n, $type);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Assigns an item into a particular column slot
+	 *
+	 * @param	mixed	$key
+	 * @param	mixed	$value
+	 * @return	void
+	 */
+	public function set_row($key, $value = NULL)
+	{
+		// We cache the row data for subsequent uses
+		if ( ! is_array($this->row_data))
+		{
+			$this->row_data = $this->row_array(0);
+		}
+
+		if (is_array($key))
+		{
+			foreach ($key as $k => $v)
+			{
+				$this->row_data[$k] = $v;
+			}
+			return;
+		}
+
+		if ($key !== '' && $value !== NULL)
+		{
+			$this->row_data[$key] = $value;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns a single result row - custom object version
+	 *
+	 * @param	int	$n
+	 * @param	string	$type
+	 * @return	object
+	 */
+	public function custom_row_object($n, $type)
+	{
+		isset($this->custom_result_object[$type]) OR $this->custom_result_object[$type] = $this->custom_result_object($type);
+
+		if (count($this->custom_result_object[$type]) === 0)
+		{
+			return NULL;
+		}
+
+		if ($n !== $this->current_row && isset($this->custom_result_object[$type][$n]))
+		{
+			$this->current_row = $n;
+		}
+
+		return $this->custom_result_object[$type][$this->current_row];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns a single result row - object version
+	 *
+	 * @param	int	$n
+	 * @return	object
+	 */
+	public function row_object($n = 0)
+	{
+		$result = $this->result_object();
+		if (count($result) === 0)
+		{
+			return NULL;
+		}
+
+		if ($n !== $this->current_row && isset($result[$n]))
+		{
+			$this->current_row = $n;
+		}
+
+		return $result[$this->current_row];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns a single result row - array version
+	 *
+	 * @param	int	$n
+	 * @return	array
+	 */
+	public function row_array($n = 0)
+	{
+		$result = $this->result_array();
+		if (count($result) === 0)
+		{
+			return NULL;
+		}
+
+		if ($n !== $this->current_row && isset($result[$n]))
+		{
+			$this->current_row = $n;
+		}
+
+		return $result[$this->current_row];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the "first" row
+	 *
+	 * @param	string	$type
+	 * @return	mixed
+	 */
+	public function first_row($type = 'object')
+	{
+		$result = $this->result($type);
+		return (count($result) === 0) ? NULL : $result[0];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the "last" row
+	 *
+	 * @param	string	$type
+	 * @return	mixed
+	 */
+	public function last_row($type = 'object')
+	{
+		$result = $this->result($type);
+		return (count($result) === 0) ? NULL : $result[count($result) - 1];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the "next" row
+	 *
+	 * @param	string	$type
+	 * @return	mixed
+	 */
+	public function next_row($type = 'object')
+	{
+		$result = $this->result($type);
+		if (count($result) === 0)
+		{
+			return NULL;
+		}
+
+		return isset($result[$this->current_row + 1])
+			? $result[++$this->current_row]
+			: NULL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the "previous" row
+	 *
+	 * @param	string	$type
+	 * @return	mixed
+	 */
+	public function previous_row($type = 'object')
+	{
+		$result = $this->result($type);
+		if (count($result) === 0)
+		{
+			return NULL;
+		}
+
+		if (isset($result[$this->current_row - 1]))
+		{
+			--$this->current_row;
+		}
+		return $result[$this->current_row];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an unbuffered row and move pointer to next row
+	 *
+	 * @param	string	$type	'array', 'object' or a custom class name
+	 * @return	mixed
+	 */
+	public function unbuffered_row($type = 'object')
+	{
+		if ($type === 'array')
+		{
+			return $this->_fetch_assoc();
+		}
+		elseif ($type === 'object')
+		{
+			return $this->_fetch_object();
+		}
+
+		return $this->_fetch_object($type);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The following methods are normally overloaded by the identically named
+	 * methods in the platform-specific driver -- except when query caching
+	 * is used. When caching is enabled we do not load the other driver.
+	 * These functions are primarily here to prevent undefined function errors
+	 * when a cached result object is in use. They are not otherwise fully
+	 * operational due to the unavailability of the database resource IDs with
+	 * cached results.
+	 */
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return 0;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names.
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		return array();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data.
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		return array();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		$this->result_id = FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @param	int	$n
+	 * @return	bool
+	 */
+	public function data_seek($n = 0)
+	{
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array.
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return array();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object.
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return new $class_name();
+	}
+
+}
diff --git a/system/database/DB_utility.php b/system/database/DB_utility.php
new file mode 100644
index 00000000..a1450f09
--- /dev/null
+++ b/system/database/DB_utility.php
@@ -0,0 +1,414 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Database Utility Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+abstract class CI_DB_utility {
+
+	/**
+	 * Database object
+	 *
+	 * @var	object
+	 */
+	protected $db;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases		= FALSE;
+
+	/**
+	 * OPTIMIZE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_optimize_table	= FALSE;
+
+	/**
+	 * REPAIR TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_repair_table	= FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$db	Database object
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		$this->db =& $db;
+		log_message('info', 'Database Utility Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List databases
+	 *
+	 * @return	array
+	 */
+	public function list_databases()
+	{
+		// Is there a cached result?
+		if (isset($this->db->data_cache['db_names']))
+		{
+			return $this->db->data_cache['db_names'];
+		}
+		elseif ($this->_list_databases === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		$this->db->data_cache['db_names'] = array();
+
+		$query = $this->db->query($this->_list_databases);
+		if ($query === FALSE)
+		{
+			return $this->db->data_cache['db_names'];
+		}
+
+		for ($i = 0, $query = $query->result_array(), $c = count($query); $i < $c; $i++)
+		{
+			$this->db->data_cache['db_names'][] = current($query[$i]);
+		}
+
+		return $this->db->data_cache['db_names'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determine if a particular database exists
+	 *
+	 * @param	string	$database_name
+	 * @return	bool
+	 */
+	public function database_exists($database_name)
+	{
+		return in_array($database_name, $this->list_databases());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Optimize Table
+	 *
+	 * @param	string	$table_name
+	 * @return	mixed
+	 */
+	public function optimize_table($table_name)
+	{
+		if ($this->_optimize_table === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		$query = $this->db->query(sprintf($this->_optimize_table, $this->db->escape_identifiers($table_name)));
+		if ($query !== FALSE)
+		{
+			$query = $query->result_array();
+			return current($query);
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Optimize Database
+	 *
+	 * @return	mixed
+	 */
+	public function optimize_database()
+	{
+		if ($this->_optimize_table === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		$result = array();
+		foreach ($this->db->list_tables() as $table_name)
+		{
+			$res = $this->db->query(sprintf($this->_optimize_table, $this->db->escape_identifiers($table_name)));
+			if (is_bool($res))
+			{
+				return $res;
+			}
+
+			// Build the result array...
+			$res = $res->result_array();
+			$res = current($res);
+			$key = str_replace($this->db->database.'.', '', current($res));
+			$keys = array_keys($res);
+			unset($res[$keys[0]]);
+
+			$result[$key] = $res;
+		}
+
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Repair Table
+	 *
+	 * @param	string	$table_name
+	 * @return	mixed
+	 */
+	public function repair_table($table_name)
+	{
+		if ($this->_repair_table === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		$query = $this->db->query(sprintf($this->_repair_table, $this->db->escape_identifiers($table_name)));
+		if (is_bool($query))
+		{
+			return $query;
+		}
+
+		$query = $query->result_array();
+		return current($query);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate CSV from a query result object
+	 *
+	 * @param	object	$query		Query result object
+	 * @param	string	$delim		Delimiter (default: ,)
+	 * @param	string	$newline	Newline character (default: \n)
+	 * @param	string	$enclosure	Enclosure (default: ")
+	 * @return	string
+	 */
+	public function csv_from_result(CI_DB_result $query, $delim = ',', $newline = "\n", $enclosure = '"')
+	{
+		$out = '';
+		// First generate the headings from the table column names
+		foreach ($query->list_fields() as $name)
+		{
+			$out .= $enclosure.str_replace($enclosure, $enclosure.$enclosure, $name).$enclosure.$delim;
+		}
+
+		$out = substr($out, 0, -strlen($delim)).$newline;
+
+		// Next blast through the result array and build out the rows
+		while ($row = $query->unbuffered_row('array'))
+		{
+			$line = array();
+			foreach ($row as $item)
+			{
+				$line[] = $enclosure.str_replace($enclosure, $enclosure.$enclosure, $item).$enclosure;
+			}
+			$out .= implode($delim, $line).$newline;
+		}
+
+		return $out;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate XML data from a query result object
+	 *
+	 * @param	object	$query	Query result object
+	 * @param	array	$params	Any preferences
+	 * @return	string
+	 */
+	public function xml_from_result(CI_DB_result $query, $params = array())
+	{
+		// Set our default values
+		foreach (array('root' => 'root', 'element' => 'element', 'newline' => "\n", 'tab' => "\t") as $key => $val)
+		{
+			if ( ! isset($params[$key]))
+			{
+				$params[$key] = $val;
+			}
+		}
+
+		// Create variables for convenience
+		extract($params);
+
+		// Load the xml helper
+		get_instance()->load->helper('xml');
+
+		// Generate the result
+		$xml = '<'.$root.'>'.$newline;
+		while ($row = $query->unbuffered_row())
+		{
+			$xml .= $tab.'<'.$element.'>'.$newline;
+			foreach ($row as $key => $val)
+			{
+				$xml .= $tab.$tab.'<'.$key.'>'.xml_convert($val).'</'.$key.'>'.$newline;
+			}
+			$xml .= $tab.'</'.$element.'>'.$newline;
+		}
+
+		return $xml.'</'.$root.'>'.$newline;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database Backup
+	 *
+	 * @param	array	$params
+	 * @return	string
+	 */
+	public function backup($params = array())
+	{
+		// If the parameters have not been submitted as an
+		// array then we know that it is simply the table
+		// name, which is a valid short cut.
+		if (is_string($params))
+		{
+			$params = array('tables' => $params);
+		}
+
+		// Set up our default preferences
+		$prefs = array(
+			'tables'		=> array(),
+			'ignore'		=> array(),
+			'filename'		=> '',
+			'format'		=> 'gzip', // gzip, zip, txt
+			'add_drop'		=> TRUE,
+			'add_insert'		=> TRUE,
+			'newline'		=> "\n",
+			'foreign_key_checks'	=> TRUE
+		);
+
+		// Did the user submit any preferences? If so set them....
+		if (count($params) > 0)
+		{
+			foreach ($prefs as $key => $val)
+			{
+				if (isset($params[$key]))
+				{
+					$prefs[$key] = $params[$key];
+				}
+			}
+		}
+
+		// Are we backing up a complete database or individual tables?
+		// If no table names were submitted we'll fetch the entire table list
+		if (count($prefs['tables']) === 0)
+		{
+			$prefs['tables'] = $this->db->list_tables();
+		}
+
+		// Validate the format
+		if ( ! in_array($prefs['format'], array('gzip', 'zip', 'txt'), TRUE))
+		{
+			$prefs['format'] = 'txt';
+		}
+
+		// Is the encoder supported? If not, we'll either issue an
+		// error or use plain text depending on the debug settings
+		if (($prefs['format'] === 'gzip' && ! function_exists('gzencode'))
+			OR ($prefs['format'] === 'zip' && ! function_exists('gzcompress')))
+		{
+			if ($this->db->db_debug)
+			{
+				return $this->db->display_error('db_unsupported_compression');
+			}
+
+			$prefs['format'] = 'txt';
+		}
+
+		// Was a Zip file requested?
+		if ($prefs['format'] === 'zip')
+		{
+			// Set the filename if not provided (only needed with Zip files)
+			if ($prefs['filename'] === '')
+			{
+				$prefs['filename'] = (count($prefs['tables']) === 1 ? $prefs['tables'] : $this->db->database)
+							.date('Y-m-d_H-i', time()).'.sql';
+			}
+			else
+			{
+				// If they included the .zip file extension we'll remove it
+				if (preg_match('|.+?\.zip$|', $prefs['filename']))
+				{
+					$prefs['filename'] = str_replace('.zip', '', $prefs['filename']);
+				}
+
+				// Tack on the ".sql" file extension if needed
+				if ( ! preg_match('|.+?\.sql$|', $prefs['filename']))
+				{
+					$prefs['filename'] .= '.sql';
+				}
+			}
+
+			// Load the Zip class and output it
+			$CI =& get_instance();
+			$CI->load->library('zip');
+			$CI->zip->add_data($prefs['filename'], $this->_backup($prefs));
+			return $CI->zip->get_zip();
+		}
+		elseif ($prefs['format'] === 'txt') // Was a text file requested?
+		{
+			return $this->_backup($prefs);
+		}
+		elseif ($prefs['format'] === 'gzip') // Was a Gzip file requested?
+		{
+			return gzencode($this->_backup($prefs));
+		}
+
+		return;
+	}
+
+}
diff --git a/system/database/drivers/cubrid/cubrid_driver.php b/system/database/drivers/cubrid/cubrid_driver.php
new file mode 100644
index 00000000..b133c102
--- /dev/null
+++ b/system/database/drivers/cubrid/cubrid_driver.php
@@ -0,0 +1,405 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CUBRID Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		Esen Sagynov
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_cubrid_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'cubrid';
+
+	/**
+	 * Auto-commit flag
+	 *
+	 * @var	bool
+	 */
+	public $auto_commit = TRUE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '`';
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RANDOM()', 'RANDOM(%d)');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:[^:]*:[^:]*:(\?.+)?$/', $this->dsn, $matches))
+		{
+			if (stripos($matches[2], 'autocommit=off') !== FALSE)
+			{
+				$this->auto_commit = FALSE;
+			}
+		}
+		else
+		{
+			// If no port is defined by the user, use the default value
+			empty($this->port) OR $this->port = 33000;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:([^:]*):([^:]*):(\?.+)?$/', $this->dsn, $matches))
+		{
+			$func = ($persistent !== TRUE) ? 'cubrid_connect_with_url' : 'cubrid_pconnect_with_url';
+			return ($matches[2] === '' && $matches[3] === '' && $this->username !== '' && $this->password !== '')
+				? $func($this->dsn, $this->username, $this->password)
+				: $func($this->dsn);
+		}
+
+		$func = ($persistent !== TRUE) ? 'cubrid_connect' : 'cubrid_pconnect';
+		return ($this->username !== '')
+			? $func($this->hostname, $this->port, $this->database, $this->username, $this->password)
+			: $func($this->hostname, $this->port, $this->database);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout
+	 *
+	 * @return	void
+	 */
+	public function reconnect()
+	{
+		if (cubrid_ping($this->conn_id) === FALSE)
+		{
+			$this->conn_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		return ( ! $this->conn_id OR ($version = cubrid_get_server_info($this->conn_id)) === FALSE)
+			? FALSE
+			: $this->data_cache['version'] = $version;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		return cubrid_query($sql, $this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		if (($autocommit = cubrid_get_autocommit($this->conn_id)) === NULL)
+		{
+			return FALSE;
+		}
+		elseif ($autocommit === TRUE)
+		{
+			return cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_FALSE);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if ( ! cubrid_commit($this->conn_id))
+		{
+			return FALSE;
+		}
+
+		if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id))
+		{
+			return cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if ( ! cubrid_rollback($this->conn_id))
+		{
+			return FALSE;
+		}
+
+		if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id))
+		{
+			cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		return cubrid_real_escape_string($str, $this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return cubrid_affected_rows();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	int
+	 */
+	public function insert_id()
+	{
+		return cubrid_insert_id($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SHOW TABLES';
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->Field;
+
+			sscanf($query[$i]->Type, '%[a-z](%d)',
+				$retval[$i]->type,
+				$retval[$i]->max_length
+			);
+
+			$retval[$i]->default		= $query[$i]->Default;
+			$retval[$i]->primary_key	= (int) ($query[$i]->Key === 'PRI');
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => cubrid_errno($this->conn_id), 'message' => cubrid_error($this->conn_id));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FROM tables
+	 *
+	 * Groups tables in FROM clauses if needed, so there is no confusion
+	 * about operator precedence.
+	 *
+	 * @return	string
+	 */
+	protected function _from_tables()
+	{
+		if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
+		{
+			return '('.implode(', ', $this->qb_from).')';
+		}
+
+		return implode(', ', $this->qb_from);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		cubrid_close($this->conn_id);
+	}
+
+}
diff --git a/system/database/drivers/cubrid/cubrid_forge.php b/system/database/drivers/cubrid/cubrid_forge.php
new file mode 100644
index 00000000..8c7cd52d
--- /dev/null
+++ b/system/database/drivers/cubrid/cubrid_forge.php
@@ -0,0 +1,230 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CUBRID Forge Class
+ *
+ * @category	Database
+ * @author		Esen Sagynov
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_cubrid_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= FALSE;
+
+	/**
+	 * CREATE TABLE keys flag
+	 *
+	 * Whether table keys are created from within the
+	 * CREATE TABLE statement.
+	 *
+	 * @var	bool
+	 */
+	protected $_create_table_keys	= TRUE;
+
+	/**
+	 * DROP DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_database	= FALSE;
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= FALSE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'SHORT'		=> 'INTEGER',
+		'SMALLINT'	=> 'INTEGER',
+		'INT'		=> 'BIGINT',
+		'INTEGER'	=> 'BIGINT',
+		'BIGINT'	=> 'NUMERIC',
+		'FLOAT'		=> 'DOUBLE',
+		'REAL'		=> 'DOUBLE'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$sqls[] = $sql.' CHANGE '.$field[$i]['_literal'];
+			}
+			else
+			{
+				$alter_type = empty($field[$i]['new_name']) ? ' MODIFY ' : ' CHANGE ';
+				$sqls[] = $sql.$alter_type.$this->_process_column($field[$i]);
+			}
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		$extra_clause = isset($field['after'])
+			? ' AFTER '.$this->db->escape_identifiers($field['after']) : '';
+
+		if (empty($extra_clause) && isset($field['first']) && $field['first'] === TRUE)
+		{
+			$extra_clause = ' FIRST';
+		}
+
+		return $this->db->escape_identifiers($field['name'])
+			.(empty($field['new_name']) ? '' : ' '.$this->db->escape_identifiers($field['new_name']))
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['null']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['unique']
+			.$extra_clause;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'LONGTEXT':
+				$attributes['TYPE'] = 'STRING';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process indexes
+	 *
+	 * @param	string	$table	(ignored)
+	 * @return	string
+	 */
+	protected function _process_indexes($table)
+	{
+		$sql = '';
+
+		for ($i = 0, $c = count($this->keys); $i < $c; $i++)
+		{
+			if (is_array($this->keys[$i]))
+			{
+				for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
+				{
+					if ( ! isset($this->fields[$this->keys[$i][$i2]]))
+					{
+						unset($this->keys[$i][$i2]);
+						continue;
+					}
+				}
+			}
+			elseif ( ! isset($this->fields[$this->keys[$i]]))
+			{
+				unset($this->keys[$i]);
+				continue;
+			}
+
+			is_array($this->keys[$i]) OR $this->keys[$i] = array($this->keys[$i]);
+
+			$sql .= ",\n\tKEY ".$this->db->escape_identifiers(implode('_', $this->keys[$i]))
+				.' ('.implode(', ', $this->db->escape_identifiers($this->keys[$i])).')';
+		}
+
+		$this->keys = array();
+
+		return $sql;
+	}
+
+}
diff --git a/system/database/drivers/cubrid/cubrid_result.php b/system/database/drivers/cubrid/cubrid_result.php
new file mode 100644
index 00000000..988fba6d
--- /dev/null
+++ b/system/database/drivers/cubrid/cubrid_result.php
@@ -0,0 +1,177 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CUBRID Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		Esen Sagynov
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_cubrid_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		return is_int($this->num_rows)
+			? $this->num_rows
+			: $this->num_rows = cubrid_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return cubrid_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		return cubrid_column_names($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= cubrid_field_name($this->result_id, $i);
+			$retval[$i]->type		= cubrid_field_type($this->result_id, $i);
+			$retval[$i]->max_length		= cubrid_field_len($this->result_id, $i);
+			$retval[$i]->primary_key	= (int) (strpos(cubrid_field_flags($this->result_id, $i), 'primary_key') !== FALSE);
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id) OR
+			(get_resource_type($this->result_id) === 'Unknown' && preg_match('/Resource id #/', strval($this->result_id))))
+		{
+			cubrid_close_request($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * @param	int	$n
+	 * @return	bool
+	 */
+	public function data_seek($n = 0)
+	{
+		return cubrid_data_seek($this->result_id, $n);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return cubrid_fetch_assoc($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return cubrid_fetch_object($this->result_id, $class_name);
+	}
+
+}
diff --git a/system/database/drivers/cubrid/cubrid_utility.php b/system/database/drivers/cubrid/cubrid_utility.php
new file mode 100644
index 00000000..d860bee0
--- /dev/null
+++ b/system/database/drivers/cubrid/cubrid_utility.php
@@ -0,0 +1,79 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CUBRID Utility Class
+ *
+ * @category	Database
+ * @author		Esen Sagynov
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_cubrid_utility extends CI_DB_utility {
+
+	/**
+	 * List databases
+	 *
+	 * @return	array
+	 */
+	public function list_databases()
+	{
+		if (isset($this->db->data_cache['db_names']))
+		{
+			return $this->db->data_cache['db_names'];
+		}
+
+		return $this->db->data_cache['db_names'] = cubrid_list_dbs($this->db->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CUBRID Export
+	 *
+	 * @param	array	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		// No SQL based support in CUBRID as of version 8.4.0. Database or
+		// table backup can be performed using CUBRID Manager
+		// database administration tool.
+		return $this->db->display_error('db_unsupported_feature');
+	}
+}
diff --git a/system/database/drivers/cubrid/index.html b/system/database/drivers/cubrid/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/cubrid/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/ibase/ibase_driver.php b/system/database/drivers/ibase/ibase_driver.php
new file mode 100644
index 00000000..85badc2f
--- /dev/null
+++ b/system/database/drivers/ibase/ibase_driver.php
@@ -0,0 +1,413 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Firebird/Interbase Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_ibase_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'ibase';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RAND()', 'RAND()');
+
+	/**
+	 * IBase Transaction status flag
+	 *
+	 * @var	resource
+	 */
+	protected $_ibase_trans;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		return ($persistent === TRUE)
+			? ibase_pconnect($this->hostname.':'.$this->database, $this->username, $this->password, $this->char_set)
+			: ibase_connect($this->hostname.':'.$this->database, $this->username, $this->password, $this->char_set);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if (($service = ibase_service_attach($this->hostname, $this->username, $this->password)))
+		{
+			$this->data_cache['version'] = ibase_server_info($service, IBASE_SVC_SERVER_VERSION);
+
+			// Don't keep the service open
+			ibase_service_detach($service);
+			return $this->data_cache['version'];
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		return ibase_query(isset($this->_ibase_trans) ? $this->_ibase_trans : $this->conn_id, $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		if (($trans_handle = ibase_trans($this->conn_id)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$this->_ibase_trans = $trans_handle;
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if (ibase_commit($this->_ibase_trans))
+		{
+			$this->_ibase_trans = NULL;
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if (ibase_rollback($this->_ibase_trans))
+		{
+			$this->_ibase_trans = NULL;
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return ibase_affected_rows($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @param	string	$generator_name
+	 * @param	int	$inc_by
+	 * @return	int
+	 */
+	public function insert_id($generator_name, $inc_by = 0)
+	{
+		//If a generator hasn't been used before it will return 0
+		return ibase_gen_id('"'.$generator_name.'"', $inc_by);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT TRIM("RDB$RELATION_NAME") AS TABLE_NAME FROM "RDB$RELATIONS" WHERE "RDB$RELATION_NAME" NOT LIKE \'RDB$%\' AND "RDB$RELATION_NAME" NOT LIKE \'MON$%\'';
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql.' AND TRIM("RDB$RELATION_NAME") AS TABLE_NAME LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT TRIM("RDB$FIELD_NAME") AS COLUMN_NAME FROM "RDB$RELATION_FIELDS" WHERE "RDB$RELATION_NAME" = '.$this->escape($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "rfields"."RDB$FIELD_NAME" AS "name",
+				CASE "fields"."RDB$FIELD_TYPE"
+					WHEN 7 THEN \'SMALLINT\'
+					WHEN 8 THEN \'INTEGER\'
+					WHEN 9 THEN \'QUAD\'
+					WHEN 10 THEN \'FLOAT\'
+					WHEN 11 THEN \'DFLOAT\'
+					WHEN 12 THEN \'DATE\'
+					WHEN 13 THEN \'TIME\'
+					WHEN 14 THEN \'CHAR\'
+					WHEN 16 THEN \'INT64\'
+					WHEN 27 THEN \'DOUBLE\'
+					WHEN 35 THEN \'TIMESTAMP\'
+					WHEN 37 THEN \'VARCHAR\'
+					WHEN 40 THEN \'CSTRING\'
+					WHEN 261 THEN \'BLOB\'
+					ELSE NULL
+				END AS "type",
+				"fields"."RDB$FIELD_LENGTH" AS "max_length",
+				"rfields"."RDB$DEFAULT_VALUE" AS "default"
+			FROM "RDB$RELATION_FIELDS" "rfields"
+				JOIN "RDB$FIELDS" "fields" ON "rfields"."RDB$FIELD_SOURCE" = "fields"."RDB$FIELD_NAME"
+			WHERE "rfields"."RDB$RELATION_NAME" = '.$this->escape($table).'
+			ORDER BY "rfields"."RDB$FIELD_POSITION"';
+
+		return (($query = $this->query($sql)) !== FALSE)
+			? $query->result_object()
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => ibase_errcode(), 'message' => ibase_errmsg());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'DELETE FROM '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		// Limit clause depends on if Interbase or Firebird
+		if (stripos($this->version(), 'firebird') !== FALSE)
+		{
+			$select = 'FIRST '.$this->qb_limit
+				.($this->qb_offset ? ' SKIP '.$this->qb_offset : '');
+		}
+		else
+		{
+			$select = 'ROWS '
+				.($this->qb_offset ? $this->qb_offset.' TO '.($this->qb_limit + $this->qb_offset) : $this->qb_limit);
+		}
+
+		return preg_replace('`SELECT`i', 'SELECT '.$select, $sql, 1);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		ibase_close($this->conn_id);
+	}
+
+}
diff --git a/system/database/drivers/ibase/ibase_forge.php b/system/database/drivers/ibase/ibase_forge.php
new file mode 100644
index 00000000..94008032
--- /dev/null
+++ b/system/database/drivers/ibase/ibase_forge.php
@@ -0,0 +1,251 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Interbase/Firebird Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_ibase_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= FALSE;
+
+	/**
+	 * RENAME TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_rename_table	= FALSE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= FALSE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'SMALLINT'	=> 'INTEGER',
+		'INTEGER'	=> 'INT64',
+		'FLOAT'		=> 'DOUBLE PRECISION'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create database
+	 *
+	 * @param	string	$db_name
+	 * @return	bool
+	 */
+	public function create_database($db_name)
+	{
+		// Firebird databases are flat files, so a path is required
+
+		// Hostname is needed for remote access
+		empty($this->db->hostname) OR $db_name = $this->hostname.':'.$db_name;
+
+		return parent::create_database('"'.$db_name.'"');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @param	string	$db_name	(ignored)
+	 * @return	bool
+	 */
+	public function drop_database($db_name)
+	{
+		if ( ! ibase_drop_db($this->conn_id))
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unable_to_drop') : FALSE;
+		}
+		elseif ( ! empty($this->db->data_cache['db_names']))
+		{
+			$key = array_search(strtolower($this->db->database), array_map('strtolower', $this->db->data_cache['db_names']), TRUE);
+			if ($key !== FALSE)
+			{
+				unset($this->db->data_cache['db_names'][$key]);
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				return FALSE;
+			}
+
+			if (isset($field[$i]['type']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identififers($field[$i]['name'])
+					.' TYPE '.$field[$i]['type'].$field[$i]['length'];
+			}
+
+			if ( ! empty($field[$i]['default']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' SET DEFAULT '.$field[$i]['default'];
+			}
+
+			if (isset($field[$i]['null']))
+			{
+				$sqls[] = 'UPDATE "RDB$RELATION_FIELDS" SET "RDB$NULL_FLAG" = '
+					.($field[$i]['null'] === TRUE ? 'NULL' : '1')
+					.' WHERE "RDB$FIELD_NAME" = '.$this->db->escape($field[$i]['name'])
+					.' AND "RDB$RELATION_NAME" = '.$this->db->escape($table);
+			}
+
+			if ( ! empty($field[$i]['new_name']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
+			}
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type'].$field['length']
+			.$field['null']
+			.$field['unique']
+			.$field['default'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INT':
+				$attributes['TYPE'] = 'INTEGER';
+				return;
+			case 'BIGINT':
+				$attributes['TYPE'] = 'INT64';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		// Not supported
+	}
+
+}
diff --git a/system/database/drivers/ibase/ibase_result.php b/system/database/drivers/ibase/ibase_result.php
new file mode 100644
index 00000000..c3e4ed7a
--- /dev/null
+++ b/system/database/drivers/ibase/ibase_result.php
@@ -0,0 +1,161 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Interbase/Firebird Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_ibase_result extends CI_DB_result {
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return ibase_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		for ($i = 0, $num_fields = $this->num_fields(); $i < $num_fields; $i++)
+		{
+			$info = ibase_field_info($this->result_id, $i);
+			$field_names[] = $info['name'];
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$info = ibase_field_info($this->result_id, $i);
+
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $info['name'];
+			$retval[$i]->type		= $info['type'];
+			$retval[$i]->max_length		= $info['length'];
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		ibase_free_result($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return ibase_fetch_assoc($this->result_id, IBASE_FETCH_BLOBS);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		$row = ibase_fetch_object($this->result_id, IBASE_FETCH_BLOBS);
+
+		if ($class_name === 'stdClass' OR ! $row)
+		{
+			return $row;
+		}
+
+		$class_name = new $class_name();
+		foreach ($row as $key => $value)
+		{
+			$class_name->$key = $value;
+		}
+
+		return $class_name;
+	}
+
+}
diff --git a/system/database/drivers/ibase/ibase_utility.php b/system/database/drivers/ibase/ibase_utility.php
new file mode 100644
index 00000000..1fc34254
--- /dev/null
+++ b/system/database/drivers/ibase/ibase_utility.php
@@ -0,0 +1,69 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Interbase/Firebird Utility Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_ibase_utility extends CI_DB_utility {
+
+	/**
+	 * Export
+	 *
+	 * @param	string	$filename
+	 * @return	mixed
+	 */
+	protected function _backup($filename)
+	{
+		if ($service = ibase_service_attach($this->db->hostname, $this->db->username, $this->db->password))
+		{
+			$res = ibase_backup($service, $this->db->database, $filename.'.fbk');
+
+			// Close the service connection
+			ibase_service_detach($service);
+			return $res;
+		}
+
+		return FALSE;
+	}
+
+}
diff --git a/system/database/drivers/ibase/index.html b/system/database/drivers/ibase/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/ibase/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/index.html b/system/database/drivers/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/mssql/index.html b/system/database/drivers/mssql/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/mssql/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/mssql/mssql_driver.php b/system/database/drivers/mssql/mssql_driver.php
new file mode 100644
index 00000000..a20b0123
--- /dev/null
+++ b/system/database/drivers/mssql/mssql_driver.php
@@ -0,0 +1,506 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MS SQL Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mssql_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'mssql';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('NEWID()', 'RAND(%d)');
+
+	/**
+	 * Quoted identifier flag
+	 *
+	 * Whether to use SQL-92 standard quoted identifier
+	 * (double quotes) or brackets for identifier escaping.
+	 *
+	 * @var	bool
+	 */
+	protected $_quoted_identifier = TRUE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Appends the port number to the hostname, if needed.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if ( ! empty($this->port))
+		{
+			$this->hostname .= (DIRECTORY_SEPARATOR === '\\' ? ',' : ':').$this->port;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		ini_set('mssql.charset', $this->char_set);
+		$this->conn_id = ($persistent)
+				? mssql_pconnect($this->hostname, $this->username, $this->password)
+				: mssql_connect($this->hostname, $this->username, $this->password);
+
+		if ( ! $this->conn_id)
+		{
+			return FALSE;
+		}
+
+		// ----------------------------------------------------------------
+
+		// Select the DB... assuming a database name is specified in the config file
+		if ($this->database !== '' && ! $this->db_select())
+		{
+			log_message('error', 'Unable to select database: '.$this->database);
+
+			return ($this->db_debug === TRUE)
+				? $this->display_error('db_unable_to_select', $this->database)
+				: FALSE;
+		}
+
+		// Determine how identifiers are escaped
+		$query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
+		$query = $query->row_array();
+		$this->_quoted_identifier = empty($query) ? FALSE : (bool) $query['qi'];
+		$this->_escape_char = ($this->_quoted_identifier) ? '"' : array('[', ']');
+
+		return $this->conn_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @param	string	$database
+	 * @return	bool
+	 */
+	public function db_select($database = '')
+	{
+		if ($database === '')
+		{
+			$database = $this->database;
+		}
+
+		// Note: Escaping is required in the event that the DB name
+		// contains reserved characters.
+		if (mssql_select_db('['.$database.']', $this->conn_id))
+		{
+			$this->database = $database;
+			$this->data_cache = array();
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	mixed	resource if rows are returned, bool otherwise
+	 */
+	protected function _execute($sql)
+	{
+		return mssql_query($sql, $this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		return $this->simple_query('BEGIN TRAN');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		return $this->simple_query('COMMIT TRAN');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		return $this->simple_query('ROLLBACK TRAN');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return mssql_rows_affected($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * Returns the last id created in the Identity column.
+	 *
+	 * @return	string
+	 */
+	public function insert_id()
+	{
+		$query = version_compare($this->version(), '8', '>=')
+			? 'SELECT SCOPE_IDENTITY() AS last_id'
+			: 'SELECT @@IDENTITY AS last_id';
+
+		$query = $this->query($query);
+		$query = $query->row();
+		return $query->last_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Version number query string
+	 *
+	 * @return	string
+	 */
+	protected function _version()
+	{
+		return "SELECT SERVERPROPERTY('ProductVersion') AS ver";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT '.$this->escape_identifiers('name')
+			.' FROM '.$this->escape_identifiers('sysobjects')
+			.' WHERE '.$this->escape_identifiers('type')." = 'U'";
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			$sql .= ' AND '.$this->escape_identifiers('name')." LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql.' ORDER BY '.$this->escape_identifiers('name');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT COLUMN_NAME
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, COLUMN_DEFAULT
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->COLUMN_NAME;
+			$retval[$i]->type		= $query[$i]->DATA_TYPE;
+			$retval[$i]->max_length		= ($query[$i]->CHARACTER_MAXIMUM_LENGTH > 0) ? $query[$i]->CHARACTER_MAXIMUM_LENGTH : $query[$i]->NUMERIC_PRECISION;
+			$retval[$i]->default		= $query[$i]->COLUMN_DEFAULT;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		// We need this because the error info is discarded by the
+		// server the first time you request it, and query() already
+		// calls error() once for logging purposes when a query fails.
+		static $error = array('code' => 0, 'message' => NULL);
+
+		$message = mssql_get_last_message();
+		if ( ! empty($message))
+		{
+			$error['code']    = $this->query('SELECT @@ERROR AS code')->row()->code;
+			$error['message'] = $message;
+		}
+
+		return $error;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE TABLE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		if ($this->qb_limit)
+		{
+			return 'WITH ci_delete AS (SELECT TOP '.$this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
+		}
+
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		$limit = $this->qb_offset + $this->qb_limit;
+
+		// As of SQL Server 2005 (9.0.*) ROW_NUMBER() is supported,
+		// however an ORDER BY clause is required for it to work
+		if (version_compare($this->version(), '9', '>=') && $this->qb_offset && ! empty($this->qb_orderby))
+		{
+			$orderby = $this->_compile_order_by();
+
+			// We have to strip the ORDER BY clause
+			$sql = trim(substr($sql, 0, strrpos($sql, $orderby)));
+
+			// Get the fields to select from our subquery, so that we can avoid CI_rownum appearing in the actual results
+			if (count($this->qb_select) === 0 OR strpos(implode(',', $this->qb_select), '*') !== FALSE)
+			{
+				$select = '*'; // Inevitable
+			}
+			else
+			{
+				// Use only field names and their aliases, everything else is out of our scope.
+				$select = array();
+				$field_regexp = ($this->_quoted_identifier)
+					? '("[^\"]+")' : '(\[[^\]]+\])';
+				for ($i = 0, $c = count($this->qb_select); $i < $c; $i++)
+				{
+					$select[] = preg_match('/(?:\s|\.)'.$field_regexp.'$/i', $this->qb_select[$i], $m)
+						? $m[1] : $this->qb_select[$i];
+				}
+				$select = implode(', ', $select);
+			}
+
+			return 'SELECT '.$select." FROM (\n\n"
+				.preg_replace('/^(SELECT( DISTINCT)?)/i', '\\1 ROW_NUMBER() OVER('.trim($orderby).') AS '.$this->escape_identifiers('CI_rownum').', ', $sql)
+				."\n\n) ".$this->escape_identifiers('CI_subquery')
+				."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.($this->qb_offset + 1).' AND '.$limit;
+		}
+
+		return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		// Multiple-value inserts are only supported as of SQL Server 2008
+		if (version_compare($this->version(), '10', '>='))
+		{
+			return parent::_insert_batch($table, $keys, $values);
+		}
+
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		mssql_close($this->conn_id);
+	}
+
+}
diff --git a/system/database/drivers/mssql/mssql_forge.php b/system/database/drivers/mssql/mssql_forge.php
new file mode 100644
index 00000000..f7941603
--- /dev/null
+++ b/system/database/drivers/mssql/mssql_forge.php
@@ -0,0 +1,151 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MS SQL Forge Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mssql_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= "IF NOT EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nCREATE TABLE";
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= "IF EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nDROP TABLE";
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT'	=> 'SMALLINT',
+		'SMALLINT'	=> 'INT',
+		'INT'		=> 'BIGINT',
+		'REAL'		=> 'FLOAT'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('ADD', 'DROP'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table).' ALTER COLUMN ';
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			$sqls[] = $sql.$this->_process_column($field[$i]);
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		if (isset($attributes['CONSTRAINT']) && strpos($attributes['TYPE'], 'INT') !== FALSE)
+		{
+			unset($attributes['CONSTRAINT']);
+		}
+
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INTEGER':
+				$attributes['TYPE'] = 'INT';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['auto_increment'] = ' IDENTITY(1,1)';
+		}
+	}
+
+}
diff --git a/system/database/drivers/mssql/mssql_result.php b/system/database/drivers/mssql/mssql_result.php
new file mode 100644
index 00000000..6cae3050
--- /dev/null
+++ b/system/database/drivers/mssql/mssql_result.php
@@ -0,0 +1,198 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MSSQL Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mssql_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		return is_int($this->num_rows)
+			? $this->num_rows
+			: $this->num_rows = mssql_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return mssql_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		mssql_field_seek($this->result_id, 0);
+		while ($field = mssql_fetch_field($this->result_id))
+		{
+			$field_names[] = $field->name;
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$field = mssql_fetch_field($this->result_id, $i);
+
+			$retval[$i]		= new stdClass();
+			$retval[$i]->name	= $field->name;
+			$retval[$i]->type	= $field->type;
+			$retval[$i]->max_length	= $field->max_length;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id))
+		{
+			mssql_free_result($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * @param	int	$n
+	 * @return	bool
+	 */
+	public function data_seek($n = 0)
+	{
+		return mssql_data_seek($this->result_id, $n);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return mssql_fetch_assoc($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		$row = mssql_fetch_object($this->result_id);
+
+		if ($class_name === 'stdClass' OR ! $row)
+		{
+			return $row;
+		}
+
+		$class_name = new $class_name();
+		foreach ($row as $key => $value)
+		{
+			$class_name->$key = $value;
+		}
+
+		return $class_name;
+	}
+
+}
diff --git a/system/database/drivers/mssql/mssql_utility.php b/system/database/drivers/mssql/mssql_utility.php
new file mode 100644
index 00000000..1aad485b
--- /dev/null
+++ b/system/database/drivers/mssql/mssql_utility.php
@@ -0,0 +1,77 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MS SQL Utility Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mssql_utility extends CI_DB_utility {
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases	= 'EXEC sp_helpdb'; // Can also be: EXEC sp_databases
+
+	/**
+	 * OPTIMIZE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_optimize_table	= 'ALTER INDEX all ON %s REORGANIZE';
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	bool
+	 */
+	protected function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+
+}
diff --git a/system/database/drivers/mysql/index.html b/system/database/drivers/mysql/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/mysql/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/mysql/mysql_driver.php b/system/database/drivers/mysql/mysql_driver.php
new file mode 100644
index 00000000..61337cdd
--- /dev/null
+++ b/system/database/drivers/mysql/mysql_driver.php
@@ -0,0 +1,493 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQL Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysql_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'mysql';
+
+	/**
+	 * Compression flag
+	 *
+	 * @var	bool
+	 */
+	public $compress = FALSE;
+
+	/**
+	 * DELETE hack flag
+	 *
+	 * Whether to use the MySQL "delete hack" which allows the number
+	 * of affected rows to be shown. Uses a preg_replace when enabled,
+	 * adding a bit more processing to all queries.
+	 *
+	 * @var	bool
+	 */
+	public $delete_hack = TRUE;
+
+	/**
+	 * Strict ON flag
+	 *
+	 * Whether we're running in strict SQL mode.
+	 *
+	 * @var	bool
+	 */
+	public $stricton;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '`';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if ( ! empty($this->port))
+		{
+			$this->hostname .= ':'.$this->port;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		$client_flags = ($this->compress === FALSE) ? 0 : MYSQL_CLIENT_COMPRESS;
+
+		if ($this->encrypt === TRUE)
+		{
+			$client_flags = $client_flags | MYSQL_CLIENT_SSL;
+		}
+
+		// Error suppression is necessary mostly due to PHP 5.5+ issuing E_DEPRECATED messages
+		$this->conn_id = ($persistent === TRUE)
+			? mysql_pconnect($this->hostname, $this->username, $this->password, $client_flags)
+			: mysql_connect($this->hostname, $this->username, $this->password, TRUE, $client_flags);
+
+		// ----------------------------------------------------------------
+
+		// Select the DB... assuming a database name is specified in the config file
+		if ($this->database !== '' && ! $this->db_select())
+		{
+			log_message('error', 'Unable to select database: '.$this->database);
+
+			return ($this->db_debug === TRUE)
+				? $this->display_error('db_unable_to_select', $this->database)
+				: FALSE;
+		}
+
+		if (is_resource($this->conn_id))
+		{
+			if ( ! mysql_set_charset($this->char_set, $this->conn_id))
+			{
+				log_message('error', "Database: Unable to set the configured connection charset ('{$this->char_set}').");
+				$this->close();
+				return ($this->db->debug) ? $this->display_error('db_unable_to_set_charset', $this->char_set) : FALSE;
+			}
+
+			if (isset($this->stricton))
+			{
+				if ($this->stricton)
+				{
+					$this->simple_query('SET SESSION sql_mode = CONCAT(@@sql_mode, ",", "STRICT_ALL_TABLES")');
+				}
+				else
+				{
+					$this->simple_query(
+						'SET SESSION sql_mode =
+						REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(
+						@@sql_mode,
+						"STRICT_ALL_TABLES,", ""),
+						",STRICT_ALL_TABLES", ""),
+						"STRICT_ALL_TABLES", ""),
+						"STRICT_TRANS_TABLES,", ""),
+						",STRICT_TRANS_TABLES", ""),
+						"STRICT_TRANS_TABLES", "")'
+					);
+				}
+			}
+
+			return $this->conn_id;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout
+	 *
+	 * @return	void
+	 */
+	public function reconnect()
+	{
+		if (mysql_ping($this->conn_id) === FALSE)
+		{
+			$this->conn_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @param	string	$database
+	 * @return	bool
+	 */
+	public function db_select($database = '')
+	{
+		if ($database === '')
+		{
+			$database = $this->database;
+		}
+
+		if (mysql_select_db($database, $this->conn_id))
+		{
+			$this->database = $database;
+			$this->data_cache = array();
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if ( ! $this->conn_id OR ($version = mysql_get_server_info($this->conn_id)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		return $this->data_cache['version'] = $version;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	mixed
+	 */
+	protected function _execute($sql)
+	{
+		return mysql_query($this->_prep_query($sql), $this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep the query
+	 *
+	 * If needed, each database adapter can prep the query string
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	string
+	 */
+	protected function _prep_query($sql)
+	{
+		// mysql_affected_rows() returns 0 for "DELETE FROM TABLE" queries. This hack
+		// modifies the query so that it a proper number of affected rows is returned.
+		if ($this->delete_hack === TRUE && preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $sql))
+		{
+			return trim($sql).' WHERE 1=1';
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		$this->simple_query('SET AUTOCOMMIT=0');
+		return $this->simple_query('START TRANSACTION'); // can also be BEGIN or BEGIN WORK
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if ($this->simple_query('COMMIT'))
+		{
+			$this->simple_query('SET AUTOCOMMIT=1');
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if ($this->simple_query('ROLLBACK'))
+		{
+			$this->simple_query('SET AUTOCOMMIT=1');
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		return mysql_real_escape_string($str, $this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return mysql_affected_rows($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	int
+	 */
+	public function insert_id()
+	{
+		return mysql_insert_id($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SHOW TABLES FROM '.$this->_escape_char.$this->database.$this->_escape_char;
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->Field;
+
+			sscanf($query[$i]->Type, '%[a-z](%d)',
+				$retval[$i]->type,
+				$retval[$i]->max_length
+			);
+
+			$retval[$i]->default		= $query[$i]->Default;
+			$retval[$i]->primary_key	= (int) ($query[$i]->Key === 'PRI');
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => mysql_errno($this->conn_id), 'message' => mysql_error($this->conn_id));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FROM tables
+	 *
+	 * Groups tables in FROM clauses if needed, so there is no confusion
+	 * about operator precedence.
+	 *
+	 * @return	string
+	 */
+	protected function _from_tables()
+	{
+		if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
+		{
+			return '('.implode(', ', $this->qb_from).')';
+		}
+
+		return implode(', ', $this->qb_from);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		// Error suppression to avoid annoying E_WARNINGs in cases
+		// where the connection has already been closed for some reason.
+		@mysql_close($this->conn_id);
+	}
+
+}
diff --git a/system/database/drivers/mysql/mysql_forge.php b/system/database/drivers/mysql/mysql_forge.php
new file mode 100644
index 00000000..e59366be
--- /dev/null
+++ b/system/database/drivers/mysql/mysql_forge.php
@@ -0,0 +1,243 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQL Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysql_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= 'CREATE DATABASE %s CHARACTER SET %s COLLATE %s';
+
+	/**
+	 * CREATE TABLE keys flag
+	 *
+	 * Whether table keys are created from within the
+	 * CREATE TABLE statement.
+	 *
+	 * @var	bool
+	 */
+	protected $_create_table_keys	= TRUE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT',
+		'SMALLINT',
+		'MEDIUMINT',
+		'INT',
+		'INTEGER',
+		'BIGINT',
+		'REAL',
+		'DOUBLE',
+		'DOUBLE PRECISION',
+		'FLOAT',
+		'DECIMAL',
+		'NUMERIC'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null = 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CREATE TABLE attributes
+	 *
+	 * @param	array	$attributes	Associative array of table attributes
+	 * @return	string
+	 */
+	protected function _create_table_attr($attributes)
+	{
+		$sql = '';
+
+		foreach (array_keys($attributes) as $key)
+		{
+			if (is_string($key))
+			{
+				$sql .= ' '.strtoupper($key).' = '.$attributes[$key];
+			}
+		}
+
+		if ( ! empty($this->db->char_set) && ! strpos($sql, 'CHARACTER SET') && ! strpos($sql, 'CHARSET'))
+		{
+			$sql .= ' DEFAULT CHARACTER SET = '.$this->db->char_set;
+		}
+
+		if ( ! empty($this->db->dbcollat) && ! strpos($sql, 'COLLATE'))
+		{
+			$sql .= ' COLLATE = '.$this->db->dbcollat;
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP')
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$field[$i] = ($alter_type === 'ADD')
+						? "\n\tADD ".$field[$i]['_literal']
+						: "\n\tMODIFY ".$field[$i]['_literal'];
+			}
+			else
+			{
+				if ($alter_type === 'ADD')
+				{
+					$field[$i]['_literal'] = "\n\tADD ";
+				}
+				else
+				{
+					$field[$i]['_literal'] = empty($field[$i]['new_name']) ? "\n\tMODIFY " : "\n\tCHANGE ";
+				}
+
+				$field[$i] = $field[$i]['_literal'].$this->_process_column($field[$i]);
+			}
+		}
+
+		return array($sql.implode(',', $field));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		$extra_clause = isset($field['after'])
+			? ' AFTER '.$this->db->escape_identifiers($field['after']) : '';
+
+		if (empty($extra_clause) && isset($field['first']) && $field['first'] === TRUE)
+		{
+			$extra_clause = ' FIRST';
+		}
+
+
+		return $this->db->escape_identifiers($field['name'])
+			.(empty($field['new_name']) ? '' : ' '.$this->db->escape_identifiers($field['new_name']))
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['null']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['unique']
+			.(empty($field['comment']) ? '' : ' COMMENT '.$field['comment'])
+			.$extra_clause;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process indexes
+	 *
+	 * @param	string	$table	(ignored)
+	 * @return	string
+	 */
+	protected function _process_indexes($table)
+	{
+		$sql = '';
+
+		for ($i = 0, $c = count($this->keys); $i < $c; $i++)
+		{
+			if (is_array($this->keys[$i]))
+			{
+				for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
+				{
+					if ( ! isset($this->fields[$this->keys[$i][$i2]]))
+					{
+						unset($this->keys[$i][$i2]);
+						continue;
+					}
+				}
+			}
+			elseif ( ! isset($this->fields[$this->keys[$i]]))
+			{
+				unset($this->keys[$i]);
+				continue;
+			}
+
+			is_array($this->keys[$i]) OR $this->keys[$i] = array($this->keys[$i]);
+
+			$sql .= ",\n\tKEY ".$this->db->escape_identifiers(implode('_', $this->keys[$i]))
+				.' ('.implode(', ', $this->db->escape_identifiers($this->keys[$i])).')';
+		}
+
+		$this->keys = array();
+
+		return $sql;
+	}
+
+}
diff --git a/system/database/drivers/mysql/mysql_result.php b/system/database/drivers/mysql/mysql_result.php
new file mode 100644
index 00000000..461f643d
--- /dev/null
+++ b/system/database/drivers/mysql/mysql_result.php
@@ -0,0 +1,199 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQL Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysql_result extends CI_DB_result {
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$driver_object
+	 * @return	void
+	 */
+	public function __construct(&$driver_object)
+	{
+		parent::__construct($driver_object);
+
+		// Required, due to mysql_data_seek() causing nightmares
+		// with empty result sets
+		$this->num_rows = mysql_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		return $this->num_rows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return mysql_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		mysql_field_seek($this->result_id, 0);
+		while ($field = mysql_fetch_field($this->result_id))
+		{
+			$field_names[] = $field->name;
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= mysql_field_name($this->result_id, $i);
+			$retval[$i]->type		= mysql_field_type($this->result_id, $i);
+			$retval[$i]->max_length		= mysql_field_len($this->result_id, $i);
+			$retval[$i]->primary_key	= (int) (strpos(mysql_field_flags($this->result_id, $i), 'primary_key') !== FALSE);
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id))
+		{
+			mysql_free_result($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * @param	int	$n
+	 * @return	bool
+	 */
+	public function data_seek($n = 0)
+	{
+		return $this->num_rows
+			? mysql_data_seek($this->result_id, $n)
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return mysql_fetch_assoc($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return mysql_fetch_object($this->result_id, $class_name);
+	}
+
+}
diff --git a/system/database/drivers/mysql/mysql_utility.php b/system/database/drivers/mysql/mysql_utility.php
new file mode 100644
index 00000000..6089da53
--- /dev/null
+++ b/system/database/drivers/mysql/mysql_utility.php
@@ -0,0 +1,211 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQL Utility Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysql_utility extends CI_DB_utility {
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases	= 'SHOW DATABASES';
+
+	/**
+	 * OPTIMIZE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_optimize_table	= 'OPTIMIZE TABLE %s';
+
+	/**
+	 * REPAIR TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_repair_table	= 'REPAIR TABLE %s';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		if (count($params) === 0)
+		{
+			return FALSE;
+		}
+
+		// Extract the prefs for simplicity
+		extract($params);
+
+		// Build the output
+		$output = '';
+
+		// Do we need to include a statement to disable foreign key checks?
+		if ($foreign_key_checks === FALSE)
+		{
+			$output .= 'SET foreign_key_checks = 0;'.$newline;
+		}
+
+		foreach ( (array) $tables as $table)
+		{
+			// Is the table in the "ignore" list?
+			if (in_array($table, (array) $ignore, TRUE))
+			{
+				continue;
+			}
+
+			// Get the table schema
+			$query = $this->db->query('SHOW CREATE TABLE '.$this->db->escape_identifiers($this->db->database.'.'.$table));
+
+			// No result means the table name was invalid
+			if ($query === FALSE)
+			{
+				continue;
+			}
+
+			// Write out the table schema
+			$output .= '#'.$newline.'# TABLE STRUCTURE FOR: '.$table.$newline.'#'.$newline.$newline;
+
+			if ($add_drop === TRUE)
+			{
+				$output .= 'DROP TABLE IF EXISTS '.$this->db->protect_identifiers($table).';'.$newline.$newline;
+			}
+
+			$i = 0;
+			$result = $query->result_array();
+			foreach ($result[0] as $val)
+			{
+				if ($i++ % 2)
+				{
+					$output .= $val.';'.$newline.$newline;
+				}
+			}
+
+			// If inserts are not needed we're done...
+			if ($add_insert === FALSE)
+			{
+				continue;
+			}
+
+			// Grab all the data from the current table
+			$query = $this->db->query('SELECT * FROM '.$this->db->protect_identifiers($table));
+
+			if ($query->num_rows() === 0)
+			{
+				continue;
+			}
+
+			// Fetch the field names and determine if the field is an
+			// integer type. We use this info to decide whether to
+			// surround the data with quotes or not
+
+			$i = 0;
+			$field_str = '';
+			$is_int = array();
+			while ($field = mysql_fetch_field($query->result_id))
+			{
+				// Most versions of MySQL store timestamp as a string
+				$is_int[$i] = in_array(strtolower(mysql_field_type($query->result_id, $i)),
+							array('tinyint', 'smallint', 'mediumint', 'int', 'bigint'), //, 'timestamp'),
+							TRUE);
+
+				// Create a string of field names
+				$field_str .= $this->db->escape_identifiers($field->name).', ';
+				$i++;
+			}
+
+			// Trim off the end comma
+			$field_str = preg_replace('/, $/' , '', $field_str);
+
+			// Build the insert string
+			foreach ($query->result_array() as $row)
+			{
+				$val_str = '';
+
+				$i = 0;
+				foreach ($row as $v)
+				{
+					// Is the value NULL?
+					if ($v === NULL)
+					{
+						$val_str .= 'NULL';
+					}
+					else
+					{
+						// Escape the data if it's not an integer
+						$val_str .= ($is_int[$i] === FALSE) ? $this->db->escape($v) : $v;
+					}
+
+					// Append a comma
+					$val_str .= ', ';
+					$i++;
+				}
+
+				// Remove the comma at the end of the string
+				$val_str = preg_replace('/, $/' , '', $val_str);
+
+				// Build the INSERT string
+				$output .= 'INSERT INTO '.$this->db->protect_identifiers($table).' ('.$field_str.') VALUES ('.$val_str.');'.$newline;
+			}
+
+			$output .= $newline.$newline;
+		}
+
+		// Do we need to include a statement to re-enable foreign key checks?
+		if ($foreign_key_checks === FALSE)
+		{
+			$output .= 'SET foreign_key_checks = 1;'.$newline;
+		}
+
+		return $output;
+	}
+
+}
diff --git a/system/database/drivers/mysqli/index.html b/system/database/drivers/mysqli/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/mysqli/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/mysqli/mysqli_driver.php b/system/database/drivers/mysqli/mysqli_driver.php
new file mode 100644
index 00000000..428b7e7f
--- /dev/null
+++ b/system/database/drivers/mysqli/mysqli_driver.php
@@ -0,0 +1,540 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQLi Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysqli_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'mysqli';
+
+	/**
+	 * Compression flag
+	 *
+	 * @var	bool
+	 */
+	public $compress = FALSE;
+
+	/**
+	 * DELETE hack flag
+	 *
+	 * Whether to use the MySQL "delete hack" which allows the number
+	 * of affected rows to be shown. Uses a preg_replace when enabled,
+	 * adding a bit more processing to all queries.
+	 *
+	 * @var	bool
+	 */
+	public $delete_hack = TRUE;
+
+	/**
+	 * Strict ON flag
+	 *
+	 * Whether we're running in strict SQL mode.
+	 *
+	 * @var	bool
+	 */
+	public $stricton;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '`';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * MySQLi object
+	 *
+	 * Has to be preserved without being assigned to $conn_id.
+	 *
+	 * @var	MySQLi
+	 */
+	protected $_mysqli;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	object
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		// Do we have a socket path?
+		if ($this->hostname[0] === '/')
+		{
+			$hostname = NULL;
+			$port = NULL;
+			$socket = $this->hostname;
+		}
+		else
+		{
+			$hostname = ($persistent === TRUE)
+				? 'p:'.$this->hostname : $this->hostname;
+			$port = empty($this->port) ? NULL : $this->port;
+			$socket = NULL;
+		}
+
+		$client_flags = ($this->compress === TRUE) ? MYSQLI_CLIENT_COMPRESS : 0;
+		$this->_mysqli = mysqli_init();
+
+		$this->_mysqli->options(MYSQLI_OPT_CONNECT_TIMEOUT, 10);
+
+		if (isset($this->stricton))
+		{
+			if ($this->stricton)
+			{
+				$this->_mysqli->options(MYSQLI_INIT_COMMAND, 'SET SESSION sql_mode = CONCAT(@@sql_mode, ",", "STRICT_ALL_TABLES")');
+			}
+			else
+			{
+				$this->_mysqli->options(MYSQLI_INIT_COMMAND,
+					'SET SESSION sql_mode =
+					REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(
+					@@sql_mode,
+					"STRICT_ALL_TABLES,", ""),
+					",STRICT_ALL_TABLES", ""),
+					"STRICT_ALL_TABLES", ""),
+					"STRICT_TRANS_TABLES,", ""),
+					",STRICT_TRANS_TABLES", ""),
+					"STRICT_TRANS_TABLES", "")'
+				);
+			}
+		}
+
+		if (is_array($this->encrypt))
+		{
+			$ssl = array();
+			empty($this->encrypt['ssl_key'])    OR $ssl['key']    = $this->encrypt['ssl_key'];
+			empty($this->encrypt['ssl_cert'])   OR $ssl['cert']   = $this->encrypt['ssl_cert'];
+			empty($this->encrypt['ssl_ca'])     OR $ssl['ca']     = $this->encrypt['ssl_ca'];
+			empty($this->encrypt['ssl_capath']) OR $ssl['capath'] = $this->encrypt['ssl_capath'];
+			empty($this->encrypt['ssl_cipher']) OR $ssl['cipher'] = $this->encrypt['ssl_cipher'];
+
+			if (isset($this->encrypt['ssl_verify']))
+			{
+				$client_flags |= MYSQLI_CLIENT_SSL;
+
+				if ($this->encrypt['ssl_verify'])
+				{
+					defined('MYSQLI_OPT_SSL_VERIFY_SERVER_CERT') && $this->_mysqli->options(MYSQLI_OPT_SSL_VERIFY_SERVER_CERT, TRUE);
+				}
+				// Apparently (when it exists), setting MYSQLI_OPT_SSL_VERIFY_SERVER_CERT
+				// to FALSE didn't do anything, so PHP 5.6.16 introduced yet another
+				// constant ...
+				//
+				// https://secure.php.net/ChangeLog-5.php#5.6.16
+				// https://bugs.php.net/bug.php?id=68344
+				elseif (defined('MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT'))
+				{
+					$client_flags |= MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT;
+				}
+			}
+
+			if ( ! empty($ssl))
+			{
+				$client_flags |= MYSQLI_CLIENT_SSL;
+				$this->_mysqli->ssl_set(
+					isset($ssl['key'])    ? $ssl['key']    : NULL,
+					isset($ssl['cert'])   ? $ssl['cert']   : NULL,
+					isset($ssl['ca'])     ? $ssl['ca']     : NULL,
+					isset($ssl['capath']) ? $ssl['capath'] : NULL,
+					isset($ssl['cipher']) ? $ssl['cipher'] : NULL
+				);
+			}
+		}
+
+		if ($this->_mysqli->real_connect($hostname, $this->username, $this->password, $this->database, $port, $socket, $client_flags))
+		{
+			// Prior to version 5.7.3, MySQL silently downgrades to an unencrypted connection if SSL setup fails
+			if (
+				($client_flags & MYSQLI_CLIENT_SSL)
+				&& version_compare($this->_mysqli->client_info, '5.7.3', '<=')
+				&& empty($this->_mysqli->query("SHOW STATUS LIKE 'ssl_cipher'")->fetch_object()->Value)
+			)
+			{
+				$this->_mysqli->close();
+				$message = 'MySQLi was configured for an SSL connection, but got an unencrypted connection instead!';
+				log_message('error', $message);
+				return ($this->db_debug) ? $this->display_error($message, '', TRUE) : FALSE;
+			}
+
+			if ( ! $this->_mysqli->set_charset($this->char_set))
+			{
+				log_message('error', "Database: Unable to set the configured connection charset ('{$this->char_set}').");
+				$this->_mysqli->close();
+				return ($this->db->db_debug) ? $this->display_error('db_unable_to_set_charset', $this->char_set) : FALSE;
+			}
+
+			return $this->_mysqli;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout
+	 *
+	 * @return	void
+	 */
+	public function reconnect()
+	{
+		if ($this->conn_id !== FALSE && $this->conn_id->ping() === FALSE)
+		{
+			$this->conn_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @param	string	$database
+	 * @return	bool
+	 */
+	public function db_select($database = '')
+	{
+		if ($database === '')
+		{
+			$database = $this->database;
+		}
+
+		if ($this->conn_id->select_db($database))
+		{
+			$this->database = $database;
+			$this->data_cache = array();
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		return $this->data_cache['version'] = $this->conn_id->server_info;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	mixed
+	 */
+	protected function _execute($sql)
+	{
+		return $this->conn_id->query($this->_prep_query($sql));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep the query
+	 *
+	 * If needed, each database adapter can prep the query string
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	string
+	 */
+	protected function _prep_query($sql)
+	{
+		// mysqli_affected_rows() returns 0 for "DELETE FROM TABLE" queries. This hack
+		// modifies the query so that it a proper number of affected rows is returned.
+		if ($this->delete_hack === TRUE && preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $sql))
+		{
+			return trim($sql).' WHERE 1=1';
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		$this->conn_id->autocommit(FALSE);
+		return is_php('5.5')
+			? $this->conn_id->begin_transaction()
+			: $this->simple_query('START TRANSACTION'); // can also be BEGIN or BEGIN WORK
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if ($this->conn_id->commit())
+		{
+			$this->conn_id->autocommit(TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if ($this->conn_id->rollback())
+		{
+			$this->conn_id->autocommit(TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		return $this->conn_id->real_escape_string($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return $this->conn_id->affected_rows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	int
+	 */
+	public function insert_id()
+	{
+		return $this->conn_id->insert_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SHOW TABLES FROM '.$this->_escape_char.$this->database.$this->_escape_char;
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->Field;
+
+			sscanf($query[$i]->Type, '%[a-z](%d)',
+				$retval[$i]->type,
+				$retval[$i]->max_length
+			);
+
+			$retval[$i]->default		= $query[$i]->Default;
+			$retval[$i]->primary_key	= (int) ($query[$i]->Key === 'PRI');
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		if ( ! empty($this->_mysqli->connect_errno))
+		{
+			return array(
+				'code'    => $this->_mysqli->connect_errno,
+				'message' => $this->_mysqli->connect_error
+			);
+		}
+
+		return array('code' => $this->conn_id->errno, 'message' => $this->conn_id->error);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FROM tables
+	 *
+	 * Groups tables in FROM clauses if needed, so there is no confusion
+	 * about operator precedence.
+	 *
+	 * @return	string
+	 */
+	protected function _from_tables()
+	{
+		if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
+		{
+			return '('.implode(', ', $this->qb_from).')';
+		}
+
+		return implode(', ', $this->qb_from);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		$this->conn_id->close();
+	}
+
+}
diff --git a/system/database/drivers/mysqli/mysqli_forge.php b/system/database/drivers/mysqli/mysqli_forge.php
new file mode 100644
index 00000000..b67fe56c
--- /dev/null
+++ b/system/database/drivers/mysqli/mysqli_forge.php
@@ -0,0 +1,244 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQLi Forge Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysqli_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= 'CREATE DATABASE %s CHARACTER SET %s COLLATE %s';
+
+	/**
+	 * CREATE TABLE keys flag
+	 *
+	 * Whether table keys are created from within the
+	 * CREATE TABLE statement.
+	 *
+	 * @var	bool
+	 */
+	protected $_create_table_keys	= TRUE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT',
+		'SMALLINT',
+		'MEDIUMINT',
+		'INT',
+		'INTEGER',
+		'BIGINT',
+		'REAL',
+		'DOUBLE',
+		'DOUBLE PRECISION',
+		'FLOAT',
+		'DECIMAL',
+		'NUMERIC'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null = 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CREATE TABLE attributes
+	 *
+	 * @param	array	$attributes	Associative array of table attributes
+	 * @return	string
+	 */
+	protected function _create_table_attr($attributes)
+	{
+		$sql = '';
+
+		foreach (array_keys($attributes) as $key)
+		{
+			if (is_string($key))
+			{
+				$sql .= ' '.strtoupper($key).' = '.$attributes[$key];
+			}
+		}
+
+		if ( ! empty($this->db->char_set) && ! strpos($sql, 'CHARACTER SET') && ! strpos($sql, 'CHARSET'))
+		{
+			$sql .= ' DEFAULT CHARACTER SET = '.$this->db->char_set;
+		}
+
+		if ( ! empty($this->db->dbcollat) && ! strpos($sql, 'COLLATE'))
+		{
+			$sql .= ' COLLATE = '.$this->db->dbcollat;
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP')
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$field[$i] = ($alter_type === 'ADD')
+						? "\n\tADD ".$field[$i]['_literal']
+						: "\n\tMODIFY ".$field[$i]['_literal'];
+			}
+			else
+			{
+				if ($alter_type === 'ADD')
+				{
+					$field[$i]['_literal'] = "\n\tADD ";
+				}
+				else
+				{
+					$field[$i]['_literal'] = empty($field[$i]['new_name']) ? "\n\tMODIFY " : "\n\tCHANGE ";
+				}
+
+				$field[$i] = $field[$i]['_literal'].$this->_process_column($field[$i]);
+			}
+		}
+
+		return array($sql.implode(',', $field));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		$extra_clause = isset($field['after'])
+			? ' AFTER '.$this->db->escape_identifiers($field['after']) : '';
+
+		if (empty($extra_clause) && isset($field['first']) && $field['first'] === TRUE)
+		{
+			$extra_clause = ' FIRST';
+		}
+
+		return $this->db->escape_identifiers($field['name'])
+			.(empty($field['new_name']) ? '' : ' '.$this->db->escape_identifiers($field['new_name']))
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['null']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['unique']
+			.(empty($field['comment']) ? '' : ' COMMENT '.$field['comment'])
+			.$extra_clause;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process indexes
+	 *
+	 * @param	string	$table	(ignored)
+	 * @return	string
+	 */
+	protected function _process_indexes($table)
+	{
+		$sql = '';
+
+		for ($i = 0, $c = count($this->keys); $i < $c; $i++)
+		{
+			if (is_array($this->keys[$i]))
+			{
+				for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
+				{
+					if ( ! isset($this->fields[$this->keys[$i][$i2]]))
+					{
+						unset($this->keys[$i][$i2]);
+						continue;
+					}
+				}
+			}
+			elseif ( ! isset($this->fields[$this->keys[$i]]))
+			{
+				unset($this->keys[$i]);
+				continue;
+			}
+
+			is_array($this->keys[$i]) OR $this->keys[$i] = array($this->keys[$i]);
+
+			$sql .= ",\n\tKEY ".$this->db->escape_identifiers(implode('_', $this->keys[$i]))
+				.' ('.implode(', ', $this->db->escape_identifiers($this->keys[$i])).')';
+		}
+
+		$this->keys = array();
+
+		return $sql;
+	}
+
+}
diff --git a/system/database/drivers/mysqli/mysqli_result.php b/system/database/drivers/mysqli/mysqli_result.php
new file mode 100644
index 00000000..7e4e45f3
--- /dev/null
+++ b/system/database/drivers/mysqli/mysqli_result.php
@@ -0,0 +1,232 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQLi Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysqli_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		return is_int($this->num_rows)
+			? $this->num_rows
+			: $this->num_rows = $this->result_id->num_rows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return $this->result_id->field_count;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		$this->result_id->field_seek(0);
+		while ($field = $this->result_id->fetch_field())
+		{
+			$field_names[] = $field->name;
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		$field_data = $this->result_id->fetch_fields();
+		for ($i = 0, $c = count($field_data); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $field_data[$i]->name;
+			$retval[$i]->type		= static::_get_field_type($field_data[$i]->type);
+			$retval[$i]->max_length		= $field_data[$i]->max_length;
+			$retval[$i]->primary_key	= (int) ($field_data[$i]->flags & MYSQLI_PRI_KEY_FLAG);
+			$retval[$i]->default		= $field_data[$i]->def;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get field type
+	 *
+	 * Extracts field type info from the bitflags returned by
+	 * mysqli_result::fetch_fields()
+	 *
+	 * @used-by	CI_DB_mysqli_result::field_data()
+	 * @param	int	$type
+	 * @return	string
+	 */
+	private static function _get_field_type($type)
+	{
+		static $map;
+		isset($map) OR $map = array(
+			MYSQLI_TYPE_DECIMAL     => 'decimal',
+			MYSQLI_TYPE_BIT         => 'bit',
+			MYSQLI_TYPE_TINY        => 'tinyint',
+			MYSQLI_TYPE_SHORT       => 'smallint',
+			MYSQLI_TYPE_INT24       => 'mediumint',
+			MYSQLI_TYPE_LONG        => 'int',
+			MYSQLI_TYPE_LONGLONG    => 'bigint',
+			MYSQLI_TYPE_FLOAT       => 'float',
+			MYSQLI_TYPE_DOUBLE      => 'double',
+			MYSQLI_TYPE_TIMESTAMP   => 'timestamp',
+			MYSQLI_TYPE_DATE        => 'date',
+			MYSQLI_TYPE_TIME        => 'time',
+			MYSQLI_TYPE_DATETIME    => 'datetime',
+			MYSQLI_TYPE_YEAR        => 'year',
+			MYSQLI_TYPE_NEWDATE     => 'date',
+			MYSQLI_TYPE_INTERVAL    => 'interval',
+			MYSQLI_TYPE_ENUM        => 'enum',
+			MYSQLI_TYPE_SET         => 'set',
+			MYSQLI_TYPE_TINY_BLOB   => 'tinyblob',
+			MYSQLI_TYPE_MEDIUM_BLOB => 'mediumblob',
+			MYSQLI_TYPE_BLOB        => 'blob',
+			MYSQLI_TYPE_LONG_BLOB   => 'longblob',
+			MYSQLI_TYPE_STRING      => 'char',
+			MYSQLI_TYPE_VAR_STRING  => 'varchar',
+			MYSQLI_TYPE_GEOMETRY    => 'geometry'
+		);
+
+		return isset($map[$type]) ? $map[$type] : $type;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_object($this->result_id))
+		{
+			$this->result_id->free();
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * @param	int	$n
+	 * @return	bool
+	 */
+	public function data_seek($n = 0)
+	{
+		return $this->result_id->data_seek($n);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return $this->result_id->fetch_assoc();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return $this->result_id->fetch_object($class_name);
+	}
+
+}
diff --git a/system/database/drivers/mysqli/mysqli_utility.php b/system/database/drivers/mysqli/mysqli_utility.php
new file mode 100644
index 00000000..75e35d11
--- /dev/null
+++ b/system/database/drivers/mysqli/mysqli_utility.php
@@ -0,0 +1,211 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQLi Utility Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysqli_utility extends CI_DB_utility {
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases	= 'SHOW DATABASES';
+
+	/**
+	 * OPTIMIZE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_optimize_table	= 'OPTIMIZE TABLE %s';
+
+	/**
+	 * REPAIR TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_repair_table	= 'REPAIR TABLE %s';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		if (count($params) === 0)
+		{
+			return FALSE;
+		}
+
+		// Extract the prefs for simplicity
+		extract($params);
+
+		// Build the output
+		$output = '';
+
+		// Do we need to include a statement to disable foreign key checks?
+		if ($foreign_key_checks === FALSE)
+		{
+			$output .= 'SET foreign_key_checks = 0;'.$newline;
+		}
+
+		foreach ( (array) $tables as $table)
+		{
+			// Is the table in the "ignore" list?
+			if (in_array($table, (array) $ignore, TRUE))
+			{
+				continue;
+			}
+
+			// Get the table schema
+			$query = $this->db->query('SHOW CREATE TABLE '.$this->db->escape_identifiers($this->db->database.'.'.$table));
+
+			// No result means the table name was invalid
+			if ($query === FALSE)
+			{
+				continue;
+			}
+
+			// Write out the table schema
+			$output .= '#'.$newline.'# TABLE STRUCTURE FOR: '.$table.$newline.'#'.$newline.$newline;
+
+			if ($add_drop === TRUE)
+			{
+				$output .= 'DROP TABLE IF EXISTS '.$this->db->protect_identifiers($table).';'.$newline.$newline;
+			}
+
+			$i = 0;
+			$result = $query->result_array();
+			foreach ($result[0] as $val)
+			{
+				if ($i++ % 2)
+				{
+					$output .= $val.';'.$newline.$newline;
+				}
+			}
+
+			// If inserts are not needed we're done...
+			if ($add_insert === FALSE)
+			{
+				continue;
+			}
+
+			// Grab all the data from the current table
+			$query = $this->db->query('SELECT * FROM '.$this->db->protect_identifiers($table));
+
+			if ($query->num_rows() === 0)
+			{
+				continue;
+			}
+
+			// Fetch the field names and determine if the field is an
+			// integer type. We use this info to decide whether to
+			// surround the data with quotes or not
+
+			$i = 0;
+			$field_str = '';
+			$is_int = array();
+			while ($field = $query->result_id->fetch_field())
+			{
+				// Most versions of MySQL store timestamp as a string
+				$is_int[$i] = in_array($field->type, array(MYSQLI_TYPE_TINY, MYSQLI_TYPE_SHORT, MYSQLI_TYPE_INT24, MYSQLI_TYPE_LONG), TRUE);
+
+				// Create a string of field names
+				$field_str .= $this->db->escape_identifiers($field->name).', ';
+				$i++;
+			}
+
+			// Trim off the end comma
+			$field_str = preg_replace('/, $/' , '', $field_str);
+
+			// Build the insert string
+			foreach ($query->result_array() as $row)
+			{
+				$val_str = '';
+
+				$i = 0;
+				foreach ($row as $v)
+				{
+					// Is the value NULL?
+					if ($v === NULL)
+					{
+						$val_str .= 'NULL';
+					}
+					else
+					{
+						// Escape the data if it's not an integer
+						$val_str .= ($is_int[$i] === FALSE) ? $this->db->escape($v) : $v;
+					}
+
+					// Append a comma
+					$val_str .= ', ';
+					$i++;
+				}
+
+				// Remove the comma at the end of the string
+				$val_str = preg_replace('/, $/' , '', $val_str);
+
+				// Build the INSERT string
+				$output .= 'INSERT INTO '.$this->db->protect_identifiers($table).' ('.$field_str.') VALUES ('.$val_str.');'.$newline;
+			}
+
+			$output .= $newline.$newline;
+		}
+
+		// Do we need to include a statement to re-enable foreign key checks?
+		if ($foreign_key_checks === FALSE)
+		{
+			$output .= 'SET foreign_key_checks = 1;'.$newline;
+		}
+
+		return $output;
+	}
+
+}
diff --git a/system/database/drivers/oci8/index.html b/system/database/drivers/oci8/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/oci8/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php
new file mode 100644
index 00000000..a9d75ebf
--- /dev/null
+++ b/system/database/drivers/oci8/oci8_driver.php
@@ -0,0 +1,701 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.4.1
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * oci8 Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage  Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+
+/**
+ * oci8 Database Adapter Class
+ *
+ * This is a modification of the DB_driver class to
+ * permit access to oracle databases
+ *
+ * @author	  Kelly McArdle
+ */
+class CI_DB_oci8_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'oci8';
+
+	/**
+	 * Statement ID
+	 *
+	 * @var	resource
+	 */
+	public $stmt_id;
+
+	/**
+	 * Cursor ID
+	 *
+	 * @var	resource
+	 */
+	public $curs_id;
+
+	/**
+	 * Commit mode flag
+	 *
+	 * @var	int
+	 */
+	public $commit_mode = OCI_COMMIT_ON_SUCCESS;
+
+	/**
+	 * Limit used flag
+	 *
+	 * If we use LIMIT, we'll add a field that will
+	 * throw off num_fields later.
+	 *
+	 * @var	bool
+	 */
+	public $limit_used = FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reset $stmt_id flag
+	 *
+	 * Used by stored_procedure() to prevent _execute() from
+	 * re-setting the statement ID.
+	 */
+	protected $_reset_stmt_id = TRUE;
+
+	/**
+	 * List of reserved identifiers
+	 *
+	 * Identifiers that must NOT be escaped.
+	 *
+	 * @var	string[]
+	 */
+	protected $_reserved_identifiers = array('*', 'rownum');
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('ASC', 'ASC'); // not currently supported
+
+	/**
+	 * COUNT string
+	 *
+	 * @used-by	CI_DB_driver::count_all()
+	 * @used-by	CI_DB_query_builder::count_all_results()
+	 *
+	 * @var	string
+	 */
+	protected $_count_string = 'SELECT COUNT(1) AS ';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		$valid_dsns = array(
+			'tns'	=> '/^\(DESCRIPTION=(\(.+\)){2,}\)$/', // TNS
+			// Easy Connect string (Oracle 10g+)
+			'ec'	=> '/^(\/\/)?[a-z0-9.:_-]+(:[1-9][0-9]{0,4})?(\/[a-z0-9$_]+)?(:[^\/])?(\/[a-z0-9$_]+)?$/i',
+			'in'	=> '/^[a-z0-9$_]+$/i' // Instance name (defined in tnsnames.ora)
+		);
+
+		/* Space characters don't have any effect when actually
+		 * connecting, but can be a hassle while validating the DSN.
+		 */
+		$this->dsn = str_replace(array("\n", "\r", "\t", ' '), '', $this->dsn);
+
+		if ($this->dsn !== '')
+		{
+			foreach ($valid_dsns as $regexp)
+			{
+				if (preg_match($regexp, $this->dsn))
+				{
+					return;
+				}
+			}
+		}
+
+		// Legacy support for TNS in the hostname configuration field
+		$this->hostname = str_replace(array("\n", "\r", "\t", ' '), '', $this->hostname);
+		if (preg_match($valid_dsns['tns'], $this->hostname))
+		{
+			$this->dsn = $this->hostname;
+			return;
+		}
+		elseif ($this->hostname !== '' && strpos($this->hostname, '/') === FALSE && strpos($this->hostname, ':') === FALSE
+			&& (( ! empty($this->port) && ctype_digit($this->port)) OR $this->database !== ''))
+		{
+			/* If the hostname field isn't empty, doesn't contain
+			 * ':' and/or '/' and if port and/or database aren't
+			 * empty, then the hostname field is most likely indeed
+			 * just a hostname. Therefore we'll try and build an
+			 * Easy Connect string from these 3 settings, assuming
+			 * that the database field is a service name.
+			 */
+			$this->dsn = $this->hostname
+				.(( ! empty($this->port) && ctype_digit($this->port)) ? ':'.$this->port : '')
+				.($this->database !== '' ? '/'.ltrim($this->database, '/') : '');
+
+			if (preg_match($valid_dsns['ec'], $this->dsn))
+			{
+				return;
+			}
+		}
+
+		/* At this point, we can only try and validate the hostname and
+		 * database fields separately as DSNs.
+		 */
+		if (preg_match($valid_dsns['ec'], $this->hostname) OR preg_match($valid_dsns['in'], $this->hostname))
+		{
+			$this->dsn = $this->hostname;
+			return;
+		}
+
+		$this->database = str_replace(array("\n", "\r", "\t", ' '), '', $this->database);
+		foreach ($valid_dsns as $regexp)
+		{
+			if (preg_match($regexp, $this->database))
+			{
+				return;
+			}
+		}
+
+		/* Well - OK, an empty string should work as well.
+		 * PHP will try to use environment variables to
+		 * determine which Oracle instance to connect to.
+		 */
+		$this->dsn = '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		$func = ($persistent === TRUE) ? 'oci_pconnect' : 'oci_connect';
+		return empty($this->char_set)
+			? $func($this->username, $this->password, $this->dsn)
+			: $func($this->username, $this->password, $this->dsn, $this->char_set);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if ( ! $this->conn_id OR ($version_string = oci_server_version($this->conn_id)) === FALSE)
+		{
+			return FALSE;
+		}
+		elseif (preg_match('#Release\s(\d+(?:\.\d+)+)#', $version_string, $match))
+		{
+			return $this->data_cache['version'] = $match[1];
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		/* Oracle must parse the query before it is run. All of the actions with
+		 * the query are based on the statement id returned by oci_parse().
+		 */
+		if ($this->_reset_stmt_id === TRUE)
+		{
+			$this->stmt_id = oci_parse($this->conn_id, $sql);
+		}
+
+		oci_set_prefetch($this->stmt_id, 1000);
+		return oci_execute($this->stmt_id, $this->commit_mode);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get cursor. Returns a cursor from the database
+	 *
+	 * @return	resource
+	 */
+	public function get_cursor()
+	{
+		return $this->curs_id = oci_new_cursor($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Stored Procedure.  Executes a stored procedure
+	 *
+	 * @param	string	package name in which the stored procedure is in
+	 * @param	string	stored procedure name to execute
+	 * @param	array	parameters
+	 * @return	mixed
+	 *
+	 * params array keys
+	 *
+	 * KEY      OPTIONAL  NOTES
+	 * name     no        the name of the parameter should be in :<param_name> format
+	 * value    no        the value of the parameter.  If this is an OUT or IN OUT parameter,
+	 *                    this should be a reference to a variable
+	 * type     yes       the type of the parameter
+	 * length   yes       the max size of the parameter
+	 */
+	public function stored_procedure($package, $procedure, array $params)
+	{
+		if ($package === '' OR $procedure === '')
+		{
+			log_message('error', 'Invalid query: '.$package.'.'.$procedure);
+			return ($this->db_debug) ? $this->display_error('db_invalid_query') : FALSE;
+		}
+
+		// Build the query string
+		$sql = 'BEGIN '.$package.'.'.$procedure.'(';
+
+		$have_cursor = FALSE;
+		foreach ($params as $param)
+		{
+			$sql .= $param['name'].',';
+
+			if (isset($param['type']) && $param['type'] === OCI_B_CURSOR)
+			{
+				$have_cursor = TRUE;
+			}
+		}
+		$sql = trim($sql, ',').'); END;';
+
+		$this->_reset_stmt_id = FALSE;
+		$this->stmt_id = oci_parse($this->conn_id, $sql);
+		$this->_bind_params($params);
+		$result = $this->query($sql, FALSE, $have_cursor);
+		$this->_reset_stmt_id = TRUE;
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Bind parameters
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	protected function _bind_params($params)
+	{
+		if ( ! is_array($params) OR ! is_resource($this->stmt_id))
+		{
+			return;
+		}
+
+		foreach ($params as $param)
+		{
+			foreach (array('name', 'value', 'type', 'length') as $val)
+			{
+				if ( ! isset($param[$val]))
+				{
+					$param[$val] = '';
+				}
+			}
+
+			oci_bind_by_name($this->stmt_id, $param['name'], $param['value'], $param['length'], $param['type']);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		$this->commit_mode = OCI_NO_AUTO_COMMIT;
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		$this->commit_mode = OCI_COMMIT_ON_SUCCESS;
+
+		return oci_commit($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		$this->commit_mode = OCI_COMMIT_ON_SUCCESS;
+		return oci_rollback($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return oci_num_rows($this->stmt_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	int
+	 */
+	public function insert_id()
+	{
+		// not supported in oracle
+		return $this->display_error('db_unsupported_function');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "TABLE_NAME" FROM "ALL_TABLES"';
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql.' WHERE "TABLE_NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		if (strpos($table, '.') !== FALSE)
+		{
+			sscanf($table, '%[^.].%s', $owner, $table);
+		}
+		else
+		{
+			$owner = $this->username;
+		}
+
+		return 'SELECT COLUMN_NAME FROM ALL_TAB_COLUMNS
+			WHERE UPPER(OWNER) = '.$this->escape(strtoupper($owner)).'
+				AND UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (strpos($table, '.') !== FALSE)
+		{
+			sscanf($table, '%[^.].%s', $owner, $table);
+		}
+		else
+		{
+			$owner = $this->username;
+		}
+
+		$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHAR_LENGTH, DATA_PRECISION, DATA_LENGTH, DATA_DEFAULT, NULLABLE
+			FROM ALL_TAB_COLUMNS
+			WHERE UPPER(OWNER) = '.$this->escape(strtoupper($owner)).'
+				AND UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->COLUMN_NAME;
+			$retval[$i]->type		= $query[$i]->DATA_TYPE;
+
+			$length = ($query[$i]->CHAR_LENGTH > 0)
+				? $query[$i]->CHAR_LENGTH : $query[$i]->DATA_PRECISION;
+			if ($length === NULL)
+			{
+				$length = $query[$i]->DATA_LENGTH;
+			}
+			$retval[$i]->max_length		= $length;
+
+			$default = $query[$i]->DATA_DEFAULT;
+			if ($default === NULL && $query[$i]->NULLABLE === 'N')
+			{
+				$default = '';
+			}
+			$retval[$i]->default = $default;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		// oci_error() returns an array that already contains
+		// 'code' and 'message' keys, but it can return false
+		// if there was no error ....
+		if (is_resource($this->curs_id))
+		{
+			$error = oci_error($this->curs_id);
+		}
+		elseif (is_resource($this->stmt_id))
+		{
+			$error = oci_error($this->stmt_id);
+		}
+		elseif (is_resource($this->conn_id))
+		{
+			$error = oci_error($this->conn_id);
+		}
+		else
+		{
+			$error = oci_error();
+		}
+
+		return is_array($error)
+			? $error
+			: array('code' => '', 'message' => '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param 	array	$values	INSERT values
+	 * @return	string
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		$keys = implode(', ', $keys);
+		$sql = "INSERT ALL\n";
+
+		for ($i = 0, $c = count($values); $i < $c; $i++)
+		{
+			$sql .= '	INTO '.$table.' ('.$keys.') VALUES '.$values[$i]."\n";
+		}
+
+		return $sql.'SELECT * FROM dual';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE TABLE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		if ($this->qb_limit)
+		{
+			$this->where('rownum <= ',$this->qb_limit, FALSE);
+			$this->qb_limit = FALSE;
+		}
+
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		if (version_compare($this->version(), '12.1', '>='))
+		{
+			// OFFSET-FETCH can be used only with the ORDER BY clause
+			empty($this->qb_orderby) && $sql .= ' ORDER BY 1';
+
+			return $sql.' OFFSET '.(int) $this->qb_offset.' ROWS FETCH NEXT '.$this->qb_limit.' ROWS ONLY';
+		}
+
+		$this->limit_used = TRUE;
+		return 'SELECT * FROM (SELECT inner_query.*, rownum rnum FROM ('.$sql.') inner_query WHERE rownum < '.($this->qb_offset + $this->qb_limit + 1).')'
+			.($this->qb_offset ? ' WHERE rnum >= '.($this->qb_offset + 1) : '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		oci_close($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * We need to reset our $limit_used hack flag, so it doesn't propagate
+	 * to subsequent queries.
+	 *
+	 * @return	void
+	 */
+	protected function _reset_select()
+	{
+		$this->limit_used = FALSE;
+		parent::_reset_select();
+	}
+}
diff --git a/system/database/drivers/oci8/oci8_forge.php b/system/database/drivers/oci8/oci8_forge.php
new file mode 100644
index 00000000..7dc7b2ad
--- /dev/null
+++ b/system/database/drivers/oci8/oci8_forge.php
@@ -0,0 +1,216 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.4.1
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Oracle Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_oci8_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= FALSE;
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= FALSE;
+
+	/**
+	 * DROP DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_database	= FALSE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= FALSE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= FALSE;
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP')
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+		elseif ($alter_type === 'CHANGE')
+		{
+			$alter_type = 'MODIFY';
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$field[$i] = "\n\t".$field[$i]['_literal'];
+			}
+			else
+			{
+				$field[$i]['_literal'] = "\n\t".$this->_process_column($field[$i]);
+
+				if ( ! empty($field[$i]['comment']))
+				{
+					$sqls[] = 'COMMENT ON COLUMN '
+						.$this->db->escape_identifiers($table).'.'.$this->db->escape_identifiers($field[$i]['name'])
+						.' IS '.$field[$i]['comment'];
+				}
+
+				if ($alter_type === 'MODIFY' && ! empty($field[$i]['new_name']))
+				{
+					$sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+						.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
+				}
+
+				$field[$i] = "\n\t".$field[$i]['_literal'];
+			}
+		}
+
+		$sql .= ' '.$alter_type.' ';
+		$sql .= (count($field) === 1)
+				? $field[0]
+				: '('.implode(',', $field).')';
+
+		// RENAME COLUMN must be executed after MODIFY
+		array_unshift($sqls, $sql);
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'number') !== FALSE && version_compare($this->db->version(), '12.1', '>='))
+		{
+			$field['auto_increment'] = ' GENERATED ALWAYS AS IDENTITY';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['null']
+			.$field['unique'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			case 'INT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			case 'BIGINT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			default: return;
+		}
+	}
+}
diff --git a/system/database/drivers/oci8/oci8_result.php b/system/database/drivers/oci8/oci8_result.php
new file mode 100644
index 00000000..7fd911e8
--- /dev/null
+++ b/system/database/drivers/oci8/oci8_result.php
@@ -0,0 +1,229 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.4.1
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * oci8 Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_oci8_result extends CI_DB_result {
+
+	/**
+	 * Statement ID
+	 *
+	 * @var	resource
+	 */
+	public $stmt_id;
+
+	/**
+	 * Cursor ID
+	 *
+	 * @var	resource
+	 */
+	public $curs_id;
+
+	/**
+	 * Limit used flag
+	 *
+	 * @var	bool
+	 */
+	public $limit_used;
+
+	/**
+	 * Commit mode flag
+	 *
+	 * @var	int
+	 */
+	public $commit_mode;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$driver_object
+	 * @return	void
+	 */
+	public function __construct(&$driver_object)
+	{
+		parent::__construct($driver_object);
+
+		$this->stmt_id = $driver_object->stmt_id;
+		$this->curs_id = $driver_object->curs_id;
+		$this->limit_used = $driver_object->limit_used;
+		$this->commit_mode =& $driver_object->commit_mode;
+		$driver_object->stmt_id = FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		$count = oci_num_fields($this->stmt_id);
+
+		// if we used a limit we subtract it
+		return ($this->limit_used) ? $count - 1 : $count;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		for ($c = 1, $fieldCount = $this->num_fields(); $c <= $fieldCount; $c++)
+		{
+			$field_names[] = oci_field_name($this->stmt_id, $c);
+		}
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		for ($c = 1, $fieldCount = $this->num_fields(); $c <= $fieldCount; $c++)
+		{
+			$F		= new stdClass();
+			$F->name	= oci_field_name($this->stmt_id, $c);
+			$F->type	= oci_field_type($this->stmt_id, $c);
+			$F->max_length	= oci_field_size($this->stmt_id, $c);
+
+			$retval[] = $F;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id))
+		{
+			oci_free_statement($this->result_id);
+			$this->result_id = FALSE;
+		}
+
+		if (is_resource($this->stmt_id))
+		{
+			oci_free_statement($this->stmt_id);
+		}
+
+		if (is_resource($this->curs_id))
+		{
+			oci_cancel($this->curs_id);
+			$this->curs_id = NULL;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		$id = ($this->curs_id) ? $this->curs_id : $this->stmt_id;
+		return oci_fetch_assoc($id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		$row = ($this->curs_id)
+			? oci_fetch_object($this->curs_id)
+			: oci_fetch_object($this->stmt_id);
+
+		if ($class_name === 'stdClass' OR ! $row)
+		{
+			return $row;
+		}
+
+		$class_name = new $class_name();
+		foreach ($row as $key => $value)
+		{
+			$class_name->$key = $value;
+		}
+
+		return $class_name;
+	}
+
+}
diff --git a/system/database/drivers/oci8/oci8_utility.php b/system/database/drivers/oci8/oci8_utility.php
new file mode 100644
index 00000000..a0a9c2c9
--- /dev/null
+++ b/system/database/drivers/oci8/oci8_utility.php
@@ -0,0 +1,68 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.4.1
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Oracle Utility Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_oci8_utility extends CI_DB_utility {
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases	= 'SELECT username FROM dba_users'; // Schemas are actual usernames
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+
+}
diff --git a/system/database/drivers/odbc/index.html b/system/database/drivers/odbc/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/odbc/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/odbc/odbc_driver.php b/system/database/drivers/odbc/odbc_driver.php
new file mode 100644
index 00000000..f02da4d1
--- /dev/null
+++ b/system/database/drivers/odbc/odbc_driver.php
@@ -0,0 +1,425 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * ODBC Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_odbc_driver extends CI_DB_driver {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'odbc';
+
+	/**
+	 * Database schema
+	 *
+	 * @var	string
+	 */
+	public $schema = 'public';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Identifier escape character
+	 *
+	 * Must be empty for ODBC.
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '';
+
+	/**
+	 * ESCAPE statement string
+	 *
+	 * @var	string
+	 */
+	protected $_like_escape_str = " {escape '%s'} ";
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RND()', 'RND(%d)');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ODBC result ID resource returned from odbc_prepare()
+	 *
+	 * @var	resource
+	 */
+	private $odbc_result;
+
+	/**
+	 * Values to use with odbc_execute() for prepared statements
+	 *
+	 * @var	array
+	 */
+	private $binds = array();
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		// Legacy support for DSN in the hostname field
+		if (empty($this->dsn))
+		{
+			$this->dsn = $this->hostname;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		return ($persistent === TRUE)
+			? odbc_pconnect($this->dsn, $this->username, $this->password)
+			: odbc_connect($this->dsn, $this->username, $this->password);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile Bindings
+	 *
+	 * @param	string	$sql	SQL statement
+	 * @param	array	$binds	An array of values to bind
+	 * @return	string
+	 */
+	public function compile_binds($sql, $binds)
+	{
+		if (empty($binds) OR empty($this->bind_marker) OR strpos($sql, $this->bind_marker) === FALSE)
+		{
+			return $sql;
+		}
+		elseif ( ! is_array($binds))
+		{
+			$binds = array($binds);
+			$bind_count = 1;
+		}
+		else
+		{
+			// Make sure we're using numeric keys
+			$binds = array_values($binds);
+			$bind_count = count($binds);
+		}
+
+		// We'll need the marker length later
+		$ml = strlen($this->bind_marker);
+
+		// Make sure not to replace a chunk inside a string that happens to match the bind marker
+		if ($c = preg_match_all("/'[^']*'|\"[^\"]*\"/i", $sql, $matches))
+		{
+			$c = preg_match_all('/'.preg_quote($this->bind_marker, '/').'/i',
+				str_replace($matches[0],
+					str_replace($this->bind_marker, str_repeat(' ', $ml), $matches[0]),
+					$sql, $c),
+				$matches, PREG_OFFSET_CAPTURE);
+
+			// Bind values' count must match the count of markers in the query
+			if ($bind_count !== $c)
+			{
+				return $sql;
+			}
+		}
+		elseif (($c = preg_match_all('/'.preg_quote($this->bind_marker, '/').'/i', $sql, $matches, PREG_OFFSET_CAPTURE)) !== $bind_count)
+		{
+			return $sql;
+		}
+
+		if ($this->bind_marker !== '?')
+		{
+			do
+			{
+				$c--;
+				$sql = substr_replace($sql, '?', $matches[0][$c][1], $ml);
+			}
+			while ($c !== 0);
+		}
+
+		if (FALSE !== ($this->odbc_result = odbc_prepare($this->conn_id, $sql)))
+		{
+			$this->binds = array_values($binds);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		if ( ! isset($this->odbc_result))
+		{
+			return odbc_exec($this->conn_id, $sql);
+		}
+		elseif ($this->odbc_result === FALSE)
+		{
+			return FALSE;
+		}
+
+		if (TRUE === ($success = odbc_execute($this->odbc_result, $this->binds)))
+		{
+			// For queries that return result sets, return the result_id resource on success
+			$this->is_write_type($sql) OR $success = $this->odbc_result;
+		}
+
+		$this->odbc_result = NULL;
+		$this->binds       = array();
+
+		return $success;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		return odbc_autocommit($this->conn_id, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if (odbc_commit($this->conn_id))
+		{
+			odbc_autocommit($this->conn_id, TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if (odbc_rollback($this->conn_id))
+		{
+			odbc_autocommit($this->conn_id, TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determines if a query is a "write" type.
+	 *
+	 * @param	string	An SQL query string
+	 * @return	bool
+	 */
+	public function is_write_type($sql)
+	{
+		if (preg_match('#^(INSERT|UPDATE).*RETURNING\s.+(\,\s?.+)*$#is', $sql))
+		{
+			return FALSE;
+		}
+
+		return parent::is_write_type($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		$this->display_error('db_unsupported_feature');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return odbc_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	bool
+	 */
+	public function insert_id()
+	{
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = '".$this->schema."'";
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql." AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SHOW COLUMNS FROM '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data query
+	 *
+	 * Generates a platform-specific query so that the column data can be retrieved
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _field_data($table)
+	{
+		return 'SELECT TOP 1 FROM '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => odbc_error($this->conn_id), 'message' => odbc_errormsg($this->conn_id));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		odbc_close($this->conn_id);
+	}
+}
diff --git a/system/database/drivers/odbc/odbc_forge.php b/system/database/drivers/odbc/odbc_forge.php
new file mode 100644
index 00000000..05f9c76d
--- /dev/null
+++ b/system/database/drivers/odbc/odbc_forge.php
@@ -0,0 +1,86 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * ODBC Forge Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/database/
+ */
+class CI_DB_odbc_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= FALSE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= FALSE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		// Not supported (in most databases at least)
+	}
+
+}
diff --git a/system/database/drivers/odbc/odbc_result.php b/system/database/drivers/odbc/odbc_result.php
new file mode 100644
index 00000000..6aff7694
--- /dev/null
+++ b/system/database/drivers/odbc/odbc_result.php
@@ -0,0 +1,268 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * ODBC Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_odbc_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		if (is_int($this->num_rows))
+		{
+			return $this->num_rows;
+		}
+		elseif (($this->num_rows = odbc_num_rows($this->result_id)) !== -1)
+		{
+			return $this->num_rows;
+		}
+
+		// Work-around for ODBC subdrivers that don't support num_rows()
+		if (count($this->result_array) > 0)
+		{
+			return $this->num_rows = count($this->result_array);
+		}
+		elseif (count($this->result_object) > 0)
+		{
+			return $this->num_rows = count($this->result_object);
+		}
+
+		return $this->num_rows = count($this->result_array());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return odbc_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		$num_fields = $this->num_fields();
+
+		if ($num_fields > 0)
+		{
+			for ($i = 1; $i <= $num_fields; $i++)
+			{
+				$field_names[] = odbc_field_name($this->result_id, $i);
+			}
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		for ($i = 0, $odbc_index = 1, $c = $this->num_fields(); $i < $c; $i++, $odbc_index++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= odbc_field_name($this->result_id, $odbc_index);
+			$retval[$i]->type		= odbc_field_type($this->result_id, $odbc_index);
+			$retval[$i]->max_length		= odbc_field_len($this->result_id, $odbc_index);
+			$retval[$i]->primary_key	= 0;
+			$retval[$i]->default		= '';
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id))
+		{
+			odbc_free_result($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return odbc_fetch_array($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		$row = odbc_fetch_object($this->result_id);
+
+		if ($class_name === 'stdClass' OR ! $row)
+		{
+			return $row;
+		}
+
+		$class_name = new $class_name();
+		foreach ($row as $key => $value)
+		{
+			$class_name->$key = $value;
+		}
+
+		return $class_name;
+	}
+
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('odbc_fetch_array'))
+{
+	/**
+	 * ODBC Fetch array
+	 *
+	 * Emulates the native odbc_fetch_array() function when
+	 * it is not available (odbc_fetch_array() requires unixODBC)
+	 *
+	 * @param	resource	&$result
+	 * @param	int		$rownumber
+	 * @return	array
+	 */
+	function odbc_fetch_array(&$result, $rownumber = 1)
+	{
+		$rs = array();
+		if ( ! odbc_fetch_into($result, $rs, $rownumber))
+		{
+			return FALSE;
+		}
+
+		$rs_assoc = array();
+		foreach ($rs as $k => $v)
+		{
+			$field_name = odbc_field_name($result, $k+1);
+			$rs_assoc[$field_name] = $v;
+		}
+
+		return $rs_assoc;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('odbc_fetch_object'))
+{
+	/**
+	 * ODBC Fetch object
+	 *
+	 * Emulates the native odbc_fetch_object() function when
+	 * it is not available.
+	 *
+	 * @param	resource	&$result
+	 * @param	int		$rownumber
+	 * @return	object
+	 */
+	function odbc_fetch_object(&$result, $rownumber = 1)
+	{
+		$rs = array();
+		if ( ! odbc_fetch_into($result, $rs, $rownumber))
+		{
+			return FALSE;
+		}
+
+		$rs_object = new stdClass();
+		foreach ($rs as $k => $v)
+		{
+			$field_name = odbc_field_name($result, $k+1);
+			$rs_object->$field_name = $v;
+		}
+
+		return $rs_object;
+	}
+}
diff --git a/system/database/drivers/odbc/odbc_utility.php b/system/database/drivers/odbc/odbc_utility.php
new file mode 100644
index 00000000..78720108
--- /dev/null
+++ b/system/database/drivers/odbc/odbc_utility.php
@@ -0,0 +1,63 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * ODBC Utility Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/database/
+ */
+class CI_DB_odbc_utility extends CI_DB_utility {
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+
+}
diff --git a/system/database/drivers/pdo/index.html b/system/database/drivers/pdo/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/pdo/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/pdo/pdo_driver.php b/system/database/drivers/pdo/pdo_driver.php
new file mode 100644
index 00000000..d0a2bf95
--- /dev/null
+++ b/system/database/drivers/pdo/pdo_driver.php
@@ -0,0 +1,342 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'pdo';
+
+	/**
+	 * PDO Options
+	 *
+	 * @var	array
+	 */
+	public $options = array();
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Validates the DSN string and/or detects the subdriver.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (preg_match('/([^:]+):/', $this->dsn, $match) && count($match) === 2)
+		{
+			// If there is a minimum valid dsn string pattern found, we're done
+			// This is for general PDO users, who tend to have a full DSN string.
+			$this->subdriver = $match[1];
+			return;
+		}
+		// Legacy support for DSN specified in the hostname field
+		elseif (preg_match('/([^:]+):/', $this->hostname, $match) && count($match) === 2)
+		{
+			$this->dsn = $this->hostname;
+			$this->hostname = NULL;
+			$this->subdriver = $match[1];
+			return;
+		}
+		elseif (in_array($this->subdriver, array('mssql', 'sybase'), TRUE))
+		{
+			$this->subdriver = 'dblib';
+		}
+		elseif ($this->subdriver === '4D')
+		{
+			$this->subdriver = '4d';
+		}
+		elseif ( ! in_array($this->subdriver, array('4d', 'cubrid', 'dblib', 'firebird', 'ibm', 'informix', 'mysql', 'oci', 'odbc', 'pgsql', 'sqlite', 'sqlsrv'), TRUE))
+		{
+			log_message('error', 'PDO: Invalid or non-existent subdriver');
+
+			if ($this->db_debug)
+			{
+				show_error('Invalid or non-existent PDO subdriver');
+			}
+		}
+
+		$this->dsn = NULL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	object
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		if ($persistent === TRUE)
+		{
+			$this->options[PDO::ATTR_PERSISTENT] = TRUE;
+		}
+
+		try
+		{
+			return new PDO($this->dsn, $this->username, $this->password, $this->options);
+		}
+		catch (PDOException $e)
+		{
+			if ($this->db_debug && empty($this->failover))
+			{
+				$this->display_error($e->getMessage(), '', TRUE);
+			}
+
+			return FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		// Not all subdrivers support the getAttribute() method
+		try
+		{
+			return $this->data_cache['version'] = $this->conn_id->getAttribute(PDO::ATTR_SERVER_VERSION);
+		}
+		catch (PDOException $e)
+		{
+			return parent::version();
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	SQL query
+	 * @return	mixed
+	 */
+	protected function _execute($sql)
+	{
+		return $this->conn_id->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		return $this->conn_id->beginTransaction();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		return $this->conn_id->commit();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		return $this->conn_id->rollBack();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		// Escape the string
+		$str = $this->conn_id->quote($str);
+
+		// If there are duplicated quotes, trim them away
+		return ($str[0] === "'")
+			? substr($str, 1, -1)
+			: $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return is_object($this->result_id) ? $this->result_id->rowCount() : 0;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @param	string	$name
+	 * @return	int
+	 */
+	public function insert_id($name = NULL)
+	{
+		return $this->conn_id->lastInsertId($name);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data query
+	 *
+	 * Generates a platform-specific query so that the column data can be retrieved
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _field_data($table)
+	{
+		return 'SELECT TOP 1 * FROM '.$this->protect_identifiers($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		$error = array('code' => '00000', 'message' => '');
+		$pdo_error = $this->conn_id->errorInfo();
+
+		if (empty($pdo_error[0]))
+		{
+			return $error;
+		}
+
+		$error['code'] = isset($pdo_error[1]) ? $pdo_error[0].'/'.$pdo_error[1] : $pdo_error[0];
+		if (isset($pdo_error[2]))
+		{
+			$error['message'] = $pdo_error[2];
+		}
+
+		return $error;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE TABLE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		$this->result_id = FALSE;
+		$this->conn_id = FALSE;
+	}
+
+}
diff --git a/system/database/drivers/pdo/pdo_forge.php b/system/database/drivers/pdo/pdo_forge.php
new file mode 100644
index 00000000..e512d3d6
--- /dev/null
+++ b/system/database/drivers/pdo/pdo_forge.php
@@ -0,0 +1,65 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Forge Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/database/
+ */
+class CI_DB_pdo_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= FALSE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= FALSE;
+
+}
diff --git a/system/database/drivers/pdo/pdo_result.php b/system/database/drivers/pdo/pdo_result.php
new file mode 100644
index 00000000..f0f56c3f
--- /dev/null
+++ b/system/database/drivers/pdo/pdo_result.php
@@ -0,0 +1,198 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		if (is_int($this->num_rows))
+		{
+			return $this->num_rows;
+		}
+		elseif (count($this->result_array) > 0)
+		{
+			return $this->num_rows = count($this->result_array);
+		}
+		elseif (count($this->result_object) > 0)
+		{
+			return $this->num_rows = count($this->result_object);
+		}
+		elseif (($num_rows = $this->result_id->rowCount()) > 0)
+		{
+			return $this->num_rows = $num_rows;
+		}
+
+		return $this->num_rows = count($this->result_array());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return $this->result_id->columnCount();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	bool
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			// Might trigger an E_WARNING due to not all subdrivers
+			// supporting getColumnMeta()
+			$field_names[$i] = @$this->result_id->getColumnMeta($i);
+			$field_names[$i] = $field_names[$i]['name'];
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		try
+		{
+			$retval = array();
+
+			for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+			{
+				$field = $this->result_id->getColumnMeta($i);
+
+				$retval[$i]			= new stdClass();
+				$retval[$i]->name		= $field['name'];
+				$retval[$i]->type		= isset($field['native_type']) ? $field['native_type'] : null;
+				$retval[$i]->max_length		= ($field['len'] > 0) ? $field['len'] : NULL;
+				$retval[$i]->primary_key	= (int) ( ! empty($field['flags']) && in_array('primary_key', $field['flags'], TRUE));
+			}
+
+			return $retval;
+		}
+		catch (Exception $e)
+		{
+			if ($this->db->db_debug)
+			{
+				return $this->db->display_error('db_unsupported_feature');
+			}
+
+			return FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_object($this->result_id))
+		{
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return $this->result_id->fetch(PDO::FETCH_ASSOC);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return $this->result_id->fetchObject($class_name);
+	}
+
+}
diff --git a/system/database/drivers/pdo/pdo_utility.php b/system/database/drivers/pdo/pdo_utility.php
new file mode 100644
index 00000000..6c40cf32
--- /dev/null
+++ b/system/database/drivers/pdo/pdo_utility.php
@@ -0,0 +1,63 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Utility Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/database/
+ */
+class CI_DB_pdo_utility extends CI_DB_utility {
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/index.html b/system/database/drivers/pdo/subdrivers/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/pdo/subdrivers/pdo_4d_driver.php b/system/database/drivers/pdo/subdrivers/pdo_4d_driver.php
new file mode 100644
index 00000000..63f6f84b
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_4d_driver.php
@@ -0,0 +1,200 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO 4D Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_4d_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = '4d';
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string[]
+	 */
+	protected $_escape_char = array('[', ']');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = '4D:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+			empty($this->port) OR $this->dsn .= ';port='.$this->port;
+			empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
+			empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+		}
+		elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 3) === FALSE)
+		{
+			$this->dsn .= ';charset='.$this->char_set;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT '.$this->escape_identifiers('TABLE_NAME').' FROM '.$this->escape_identifiers('_USER_TABLES');
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			$sql .= ' WHERE '.$this->escape_identifiers('TABLE_NAME')." LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT '.$this->escape_identifiers('COLUMN_NAME').' FROM '.$this->escape_identifiers('_USER_COLUMNS')
+			.' WHERE '.$this->escape_identifiers('TABLE_NAME').' = '.$this->escape($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data query
+	 *
+	 * Generates a platform-specific query so that the column data can be retrieved
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _field_data($table)
+	{
+		return 'SELECT * FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE).' LIMIT 1';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		return $sql.' LIMIT '.$this->qb_limit.($this->qb_offset ? ' OFFSET '.$this->qb_offset : '');
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_4d_forge.php b/system/database/drivers/pdo/subdrivers/pdo_4d_forge.php
new file mode 100644
index 00000000..f7fa5431
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_4d_forge.php
@@ -0,0 +1,217 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO 4D Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_4d_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= 'CREATE SCHEMA %s';
+
+	/**
+	 * DROP DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_database	= 'DROP SCHEMA %s';
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= 'CREATE TABLE IF NOT EXISTS';
+
+	/**
+	 * RENAME TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_rename_table	= FALSE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'INT16'		=> 'INT',
+		'SMALLINT'	=> 'INT',
+		'INT'		=> 'INT64',
+		'INT32'		=> 'INT64'
+	);
+
+	/**
+	 * DEFAULT value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_default		= FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('ADD', 'DROP'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		// No method of modifying columns is supported
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type'].$field['length']
+			.$field['null']
+			.$field['unique']
+			.$field['auto_increment'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INTEGER':
+				$attributes['TYPE'] = 'INT';
+				return;
+			case 'BIGINT':
+				$attributes['TYPE'] = 'INT64';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute UNIQUE
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_unique(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['UNIQUE']) && $attributes['UNIQUE'] === TRUE)
+		{
+			$field['unique'] = ' UNIQUE';
+
+			// UNIQUE must be used with NOT NULL
+			$field['null'] = ' NOT NULL';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE)
+		{
+			if (stripos($field['type'], 'int') !== FALSE)
+			{
+				$field['auto_increment'] = ' AUTO_INCREMENT';
+			}
+			elseif (strcasecmp($field['type'], 'UUID') === 0)
+			{
+				$field['auto_increment'] = ' AUTO_GENERATE';
+			}
+		}
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_cubrid_driver.php b/system/database/drivers/pdo/subdrivers/pdo_cubrid_driver.php
new file mode 100644
index 00000000..05887bcf
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_cubrid_driver.php
@@ -0,0 +1,209 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO CUBRID Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_cubrid_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'cubrid';
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '`';
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var array
+	 */
+	protected $_random_keyword = array('RANDOM()', 'RANDOM(%d)');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'cubrid:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+			empty($this->port) OR $this->dsn .= ';port='.$this->port;
+			empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
+			empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SHOW TABLES';
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->Field;
+
+			sscanf($query[$i]->Type, '%[a-z](%d)',
+				$retval[$i]->type,
+				$retval[$i]->max_length
+			);
+
+			$retval[$i]->default		= $query[$i]->Default;
+			$retval[$i]->primary_key	= (int) ($query[$i]->Key === 'PRI');
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FROM tables
+	 *
+	 * Groups tables in FROM clauses if needed, so there is no confusion
+	 * about operator precedence.
+	 *
+	 * @return	string
+	 */
+	protected function _from_tables()
+	{
+		if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
+		{
+			return '('.implode(', ', $this->qb_from).')';
+		}
+
+		return implode(', ', $this->qb_from);
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_cubrid_forge.php b/system/database/drivers/pdo/subdrivers/pdo_cubrid_forge.php
new file mode 100644
index 00000000..32ccc8cc
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_cubrid_forge.php
@@ -0,0 +1,230 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO CUBRID Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_cubrid_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= FALSE;
+
+	/**
+	 * DROP DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_database	= FALSE;
+
+	/**
+	 * CREATE TABLE keys flag
+	 *
+	 * Whether table keys are created from within the
+	 * CREATE TABLE statement.
+	 *
+	 * @var	bool
+	 */
+	protected $_create_table_keys	= TRUE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'SHORT'		=> 'INTEGER',
+		'SMALLINT'	=> 'INTEGER',
+		'INT'		=> 'BIGINT',
+		'INTEGER'	=> 'BIGINT',
+		'BIGINT'	=> 'NUMERIC',
+		'FLOAT'		=> 'DOUBLE',
+		'REAL'		=> 'DOUBLE'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$sqls[] = $sql.' CHANGE '.$field[$i]['_literal'];
+			}
+			else
+			{
+				$alter_type = empty($field[$i]['new_name']) ? ' MODIFY ' : ' CHANGE ';
+				$sqls[] = $sql.$alter_type.$this->_process_column($field[$i]);
+			}
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		$extra_clause = isset($field['after'])
+			? ' AFTER '.$this->db->escape_identifiers($field['after']) : '';
+
+		if (empty($extra_clause) && isset($field['first']) && $field['first'] === TRUE)
+		{
+			$extra_clause = ' FIRST';
+		}
+
+		return $this->db->escape_identifiers($field['name'])
+			.(empty($field['new_name']) ? '' : ' '.$this->db->escape_identifiers($field['new_name']))
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['null']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['unique']
+			.$extra_clause;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'LONGTEXT':
+				$attributes['TYPE'] = 'STRING';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process indexes
+	 *
+	 * @param	string	$table	(ignored)
+	 * @return	string
+	 */
+	protected function _process_indexes($table)
+	{
+		$sql = '';
+
+		for ($i = 0, $c = count($this->keys); $i < $c; $i++)
+		{
+			if (is_array($this->keys[$i]))
+			{
+				for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
+				{
+					if ( ! isset($this->fields[$this->keys[$i][$i2]]))
+					{
+						unset($this->keys[$i][$i2]);
+						continue;
+					}
+				}
+			}
+			elseif ( ! isset($this->fields[$this->keys[$i]]))
+			{
+				unset($this->keys[$i]);
+				continue;
+			}
+
+			is_array($this->keys[$i]) OR $this->keys[$i] = array($this->keys[$i]);
+
+			$sql .= ",\n\tKEY ".$this->db->escape_identifiers(implode('_', $this->keys[$i]))
+				.' ('.implode(', ', $this->db->escape_identifiers($this->keys[$i])).')';
+		}
+
+		$this->keys = array();
+
+		return $sql;
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php b/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php
new file mode 100644
index 00000000..06f03ccc
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php
@@ -0,0 +1,353 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO DBLIB Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_dblib_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'dblib';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('NEWID()', 'RAND(%d)');
+
+	/**
+	 * Quoted identifier flag
+	 *
+	 * Whether to use SQL-92 standard quoted identifier
+	 * (double quotes) or brackets for identifier escaping.
+	 *
+	 * @var	bool
+	 */
+	protected $_quoted_identifier;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = $params['subdriver'].':host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+			if ( ! empty($this->port))
+			{
+				$this->dsn .= (DIRECTORY_SEPARATOR === '\\' ? ',' : ':').$this->port;
+			}
+
+			empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
+			empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+			empty($this->appname) OR $this->dsn .= ';appname='.$this->appname;
+		}
+		else
+		{
+			if ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 6) === FALSE)
+			{
+				$this->dsn .= ';charset='.$this->char_set;
+			}
+
+			$this->subdriver = 'dblib';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	object
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		if ($persistent === TRUE)
+		{
+			log_message('debug', "dblib driver doesn't support persistent connections");
+		}
+
+		$this->conn_id = parent::db_connect(FALSE);
+
+		if ( ! is_object($this->conn_id))
+		{
+			return $this->conn_id;
+		}
+
+		// Determine how identifiers are escaped
+		$query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
+		$query = $query->row_array();
+		$this->_quoted_identifier = empty($query) ? FALSE : (bool) $query['qi'];
+		$this->_escape_char = ($this->_quoted_identifier) ? '"' : array('[', ']');
+
+		return $this->conn_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT '.$this->escape_identifiers('name')
+			.' FROM '.$this->escape_identifiers('sysobjects')
+			.' WHERE '.$this->escape_identifiers('type')." = 'U'";
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			$sql .= ' AND '.$this->escape_identifiers('name')." LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql.' ORDER BY '.$this->escape_identifiers('name');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT COLUMN_NAME
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, COLUMN_DEFAULT
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->COLUMN_NAME;
+			$retval[$i]->type		= $query[$i]->DATA_TYPE;
+			$retval[$i]->max_length		= ($query[$i]->CHARACTER_MAXIMUM_LENGTH > 0) ? $query[$i]->CHARACTER_MAXIMUM_LENGTH : $query[$i]->NUMERIC_PRECISION;
+			$retval[$i]->default		= $query[$i]->COLUMN_DEFAULT;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		if ($this->qb_limit)
+		{
+			return 'WITH ci_delete AS (SELECT TOP '.$this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
+		}
+
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		$limit = $this->qb_offset + $this->qb_limit;
+
+		// As of SQL Server 2005 (9.0.*) ROW_NUMBER() is supported,
+		// however an ORDER BY clause is required for it to work
+		if (version_compare($this->version(), '9', '>=') && $this->qb_offset && ! empty($this->qb_orderby))
+		{
+			$orderby = $this->_compile_order_by();
+
+			// We have to strip the ORDER BY clause
+			$sql = trim(substr($sql, 0, strrpos($sql, $orderby)));
+
+			// Get the fields to select from our subquery, so that we can avoid CI_rownum appearing in the actual results
+			if (count($this->qb_select) === 0 OR strpos(implode(',', $this->qb_select), '*') !== FALSE)
+			{
+				$select = '*'; // Inevitable
+			}
+			else
+			{
+				// Use only field names and their aliases, everything else is out of our scope.
+				$select = array();
+				$field_regexp = ($this->_quoted_identifier)
+					? '("[^\"]+")' : '(\[[^\]]+\])';
+				for ($i = 0, $c = count($this->qb_select); $i < $c; $i++)
+				{
+					$select[] = preg_match('/(?:\s|\.)'.$field_regexp.'$/i', $this->qb_select[$i], $m)
+						? $m[1] : $this->qb_select[$i];
+				}
+				$select = implode(', ', $select);
+			}
+
+			return 'SELECT '.$select." FROM (\n\n"
+				.preg_replace('/^(SELECT( DISTINCT)?)/i', '\\1 ROW_NUMBER() OVER('.trim($orderby).') AS '.$this->escape_identifiers('CI_rownum').', ', $sql)
+				."\n\n) ".$this->escape_identifiers('CI_subquery')
+				."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.($this->qb_offset + 1).' AND '.$limit;
+		}
+
+		return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		// Multiple-value inserts are only supported as of SQL Server 2008
+		if (version_compare($this->version(), '10', '>='))
+		{
+			return parent::_insert_batch($table, $keys, $values);
+		}
+
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return      string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		return $this->data_cache['version'] = $this->conn_id->query("SELECT SERVERPROPERTY('ProductVersion') AS ver")->fetchColumn(0);
+	}
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_dblib_forge.php b/system/database/drivers/pdo/subdrivers/pdo_dblib_forge.php
new file mode 100644
index 00000000..692b76d8
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_dblib_forge.php
@@ -0,0 +1,149 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO DBLIB Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_dblib_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= "IF NOT EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nCREATE TABLE";
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= "IF EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nDROP TABLE";
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT'	=> 'SMALLINT',
+		'SMALLINT'	=> 'INT',
+		'INT'		=> 'BIGINT',
+		'REAL'		=> 'FLOAT'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('ADD', 'DROP'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table).' ALTER COLUMN ';
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			$sqls[] = $sql.$this->_process_column($field[$i]);
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		if (isset($attributes['CONSTRAINT']) && strpos($attributes['TYPE'], 'INT') !== FALSE)
+		{
+			unset($attributes['CONSTRAINT']);
+		}
+
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INTEGER':
+				$attributes['TYPE'] = 'INT';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['auto_increment'] = ' IDENTITY(1,1)';
+		}
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php b/system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php
new file mode 100644
index 00000000..4e4dd27e
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php
@@ -0,0 +1,279 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Firebird Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_firebird_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'firebird';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RAND()', 'RAND()');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'firebird:';
+
+			if ( ! empty($this->database))
+			{
+				$this->dsn .= 'dbname='.$this->database;
+			}
+			elseif ( ! empty($this->hostname))
+			{
+				$this->dsn .= 'dbname='.$this->hostname;
+			}
+
+			empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+			empty($this->role) OR $this->dsn .= ';role='.$this->role;
+		}
+		elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 9) === FALSE)
+		{
+			$this->dsn .= ';charset='.$this->char_set;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "RDB$RELATION_NAME" FROM "RDB$RELATIONS" WHERE "RDB$RELATION_NAME" NOT LIKE \'RDB$%\' AND "RDB$RELATION_NAME" NOT LIKE \'MON$%\'';
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			return $sql.' AND "RDB$RELATION_NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT "RDB$FIELD_NAME" FROM "RDB$RELATION_FIELDS" WHERE "RDB$RELATION_NAME" = '.$this->escape($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "rfields"."RDB$FIELD_NAME" AS "name",
+				CASE "fields"."RDB$FIELD_TYPE"
+					WHEN 7 THEN \'SMALLINT\'
+					WHEN 8 THEN \'INTEGER\'
+					WHEN 9 THEN \'QUAD\'
+					WHEN 10 THEN \'FLOAT\'
+					WHEN 11 THEN \'DFLOAT\'
+					WHEN 12 THEN \'DATE\'
+					WHEN 13 THEN \'TIME\'
+					WHEN 14 THEN \'CHAR\'
+					WHEN 16 THEN \'INT64\'
+					WHEN 27 THEN \'DOUBLE\'
+					WHEN 35 THEN \'TIMESTAMP\'
+					WHEN 37 THEN \'VARCHAR\'
+					WHEN 40 THEN \'CSTRING\'
+					WHEN 261 THEN \'BLOB\'
+					ELSE NULL
+				END AS "type",
+				"fields"."RDB$FIELD_LENGTH" AS "max_length",
+				"rfields"."RDB$DEFAULT_VALUE" AS "default"
+			FROM "RDB$RELATION_FIELDS" "rfields"
+				JOIN "RDB$FIELDS" "fields" ON "rfields"."RDB$FIELD_SOURCE" = "fields"."RDB$FIELD_NAME"
+			WHERE "rfields"."RDB$RELATION_NAME" = '.$this->escape($table).'
+			ORDER BY "rfields"."RDB$FIELD_POSITION"';
+
+		return (($query = $this->query($sql)) !== FALSE)
+			? $query->result_object()
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'DELETE FROM '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		// Limit clause depends on if Interbase or Firebird
+		if (stripos($this->version(), 'firebird') !== FALSE)
+		{
+			$select = 'FIRST '.$this->qb_limit
+				.($this->qb_offset > 0 ? ' SKIP '.$this->qb_offset : '');
+		}
+		else
+		{
+			$select = 'ROWS '
+				.($this->qb_offset > 0 ? $this->qb_offset.' TO '.($this->qb_limit + $this->qb_offset) : $this->qb_limit);
+		}
+
+		return preg_replace('`SELECT`i', 'SELECT '.$select, $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_firebird_forge.php b/system/database/drivers/pdo/subdrivers/pdo_firebird_forge.php
new file mode 100644
index 00000000..c3d25b6f
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_firebird_forge.php
@@ -0,0 +1,237 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Firebird Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_firebird_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * RENAME TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_rename_table	= FALSE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'SMALLINT'	=> 'INTEGER',
+		'INTEGER'	=> 'INT64',
+		'FLOAT'		=> 'DOUBLE PRECISION'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create database
+	 *
+	 * @param	string	$db_name
+	 * @return	string
+	 */
+	public function create_database($db_name)
+	{
+		// Firebird databases are flat files, so a path is required
+
+		// Hostname is needed for remote access
+		empty($this->db->hostname) OR $db_name = $this->hostname.':'.$db_name;
+
+		return parent::create_database('"'.$db_name.'"');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @param	string	$db_name	(ignored)
+	 * @return	bool
+	 */
+	public function drop_database($db_name)
+	{
+		if ( ! ibase_drop_db($this->conn_id))
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unable_to_drop') : FALSE;
+		}
+		elseif ( ! empty($this->db->data_cache['db_names']))
+		{
+			$key = array_search(strtolower($this->db->database), array_map('strtolower', $this->db->data_cache['db_names']), TRUE);
+			if ($key !== FALSE)
+			{
+				unset($this->db->data_cache['db_names'][$key]);
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				return FALSE;
+			}
+
+			if (isset($field[$i]['type']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TYPE '.$field[$i]['type'].$field[$i]['length'];
+			}
+
+			if ( ! empty($field[$i]['default']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' SET '.$field[$i]['default'];
+			}
+
+			if (isset($field[$i]['null']))
+			{
+				$sqls[] = 'UPDATE "RDB$RELATION_FIELDS" SET "RDB$NULL_FLAG" = '
+					.($field[$i]['null'] === TRUE ? 'NULL' : '1')
+					.' WHERE "RDB$FIELD_NAME" = '.$this->db->escape($field[$i]['name'])
+					.' AND "RDB$RELATION_NAME" = '.$this->db->escape($table);
+			}
+
+			if ( ! empty($field[$i]['new_name']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
+			}
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type'].$field['length']
+			.$field['null']
+			.$field['unique']
+			.$field['default'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INT':
+				$attributes['TYPE'] = 'INTEGER';
+				return;
+			case 'BIGINT':
+				$attributes['TYPE'] = 'INT64';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		// Not supported
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_ibm_driver.php b/system/database/drivers/pdo/subdrivers/pdo_ibm_driver.php
new file mode 100644
index 00000000..16b1c6e1
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_ibm_driver.php
@@ -0,0 +1,244 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO IBM DB2 Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_ibm_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'ibm';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'ibm:';
+
+			// Pre-defined DSN
+			if (empty($this->hostname) && empty($this->HOSTNAME) && empty($this->port) && empty($this->PORT))
+			{
+				if (isset($this->DSN))
+				{
+					$this->dsn .= 'DSN='.$this->DSN;
+				}
+				elseif ( ! empty($this->database))
+				{
+					$this->dsn .= 'DSN='.$this->database;
+				}
+
+				return;
+			}
+
+			$this->dsn .= 'DRIVER='.(isset($this->DRIVER) ? '{'.$this->DRIVER.'}' : '{IBM DB2 ODBC DRIVER}').';';
+
+			if (isset($this->DATABASE))
+			{
+				$this->dsn .= 'DATABASE='.$this->DATABASE.';';
+			}
+			elseif ( ! empty($this->database))
+			{
+				$this->dsn .= 'DATABASE='.$this->database.';';
+			}
+
+			if (isset($this->HOSTNAME))
+			{
+				$this->dsn .= 'HOSTNAME='.$this->HOSTNAME.';';
+			}
+			else
+			{
+				$this->dsn .= 'HOSTNAME='.(empty($this->hostname) ? '127.0.0.1;' : $this->hostname.';');
+			}
+
+			if (isset($this->PORT))
+			{
+				$this->dsn .= 'PORT='.$this->port.';';
+			}
+			elseif ( ! empty($this->port))
+			{
+				$this->dsn .= ';PORT='.$this->port.';';
+			}
+
+			$this->dsn .= 'PROTOCOL='.(isset($this->PROTOCOL) ? $this->PROTOCOL.';' : 'TCPIP;');
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "tabname" FROM "syscat"."tables"
+			WHERE "type" = \'T\' AND LOWER("tabschema") = '.$this->escape(strtolower($this->database));
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			$sql .= ' AND "tabname" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT "colname" FROM "syscat"."columns"
+			WHERE LOWER("tabschema") = '.$this->escape(strtolower($this->database)).'
+				AND LOWER("tabname") = '.$this->escape(strtolower($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "colname" AS "name", "typename" AS "type", "default" AS "default", "length" AS "max_length",
+				CASE "keyseq" WHEN NULL THEN 0 ELSE 1 END AS "primary_key"
+			FROM "syscat"."columns"
+			WHERE LOWER("tabschema") = '.$this->escape(strtolower($this->database)).'
+				AND LOWER("tabname") = '.$this->escape(strtolower($table)).'
+			ORDER BY "colno"';
+
+		return (($query = $this->query($sql)) !== FALSE)
+			? $query->result_object()
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		$sql .= ' FETCH FIRST '.($this->qb_limit + $this->qb_offset).' ROWS ONLY';
+
+		return ($this->qb_offset)
+			? 'SELECT * FROM ('.$sql.') WHERE rownum > '.$this->qb_offset
+			: $sql;
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_ibm_forge.php b/system/database/drivers/pdo/subdrivers/pdo_ibm_forge.php
new file mode 100644
index 00000000..8ea4838d
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_ibm_forge.php
@@ -0,0 +1,154 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO IBM DB2 Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_ibm_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * RENAME TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_rename_table	= 'RENAME TABLE %s TO %s';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'SMALLINT'	=> 'INTEGER',
+		'INT'		=> 'BIGINT',
+		'INTEGER'	=> 'BIGINT'
+	);
+
+	/**
+	 * DEFAULT value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_default		= FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'CHANGE')
+		{
+			$alter_type = 'MODIFY';
+		}
+
+		return parent::_alter_table($alter_type, $table, $field);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute UNIQUE
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_unique(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['UNIQUE']) && $attributes['UNIQUE'] === TRUE)
+		{
+			$field['unique'] = ' UNIQUE';
+
+			// UNIQUE must be used with NOT NULL
+			$field['null'] = ' NOT NULL';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		// Not supported
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_informix_driver.php b/system/database/drivers/pdo/subdrivers/pdo_informix_driver.php
new file mode 100644
index 00000000..98f46389
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_informix_driver.php
@@ -0,0 +1,309 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Informix Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_informix_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'informix';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('ASC', 'ASC'); // Currently not supported
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'informix:';
+
+			// Pre-defined DSN
+			if (empty($this->hostname) && empty($this->host) && empty($this->port) && empty($this->service))
+			{
+				if (isset($this->DSN))
+				{
+					$this->dsn .= 'DSN='.$this->DSN;
+				}
+				elseif ( ! empty($this->database))
+				{
+					$this->dsn .= 'DSN='.$this->database;
+				}
+
+				return;
+			}
+
+			if (isset($this->host))
+			{
+				$this->dsn .= 'host='.$this->host;
+			}
+			else
+			{
+				$this->dsn .= 'host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+			}
+
+			if (isset($this->service))
+			{
+				$this->dsn .= '; service='.$this->service;
+			}
+			elseif ( ! empty($this->port))
+			{
+				$this->dsn .= '; service='.$this->port;
+			}
+
+			empty($this->database) OR $this->dsn .= '; database='.$this->database;
+			empty($this->server) OR $this->dsn .= '; server='.$this->server;
+
+			$this->dsn .= '; protocol='.(isset($this->protocol) ? $this->protocol : 'onsoctcp')
+				.'; EnableScrollableCursors=1';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "tabname" FROM "systables"
+			WHERE "tabid" > 99 AND "tabtype" = \'T\' AND LOWER("owner") = '.$this->escape(strtolower($this->username));
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			$sql .= ' AND "tabname" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		if (strpos($table, '.') !== FALSE)
+		{
+			sscanf($table, '%[^.].%s', $owner, $table);
+		}
+		else
+		{
+			$owner = $this->username;
+		}
+
+		return 'SELECT "colname" FROM "systables", "syscolumns"
+			WHERE "systables"."tabid" = "syscolumns"."tabid"
+				AND "systables"."tabtype" = \'T\'
+				AND LOWER("systables"."owner") = '.$this->escape(strtolower($owner)).'
+				AND LOWER("systables"."tabname") = '.$this->escape(strtolower($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "syscolumns"."colname" AS "name",
+				CASE "syscolumns"."coltype"
+					WHEN 0 THEN \'CHAR\'
+					WHEN 1 THEN \'SMALLINT\'
+					WHEN 2 THEN \'INTEGER\'
+					WHEN 3 THEN \'FLOAT\'
+					WHEN 4 THEN \'SMALLFLOAT\'
+					WHEN 5 THEN \'DECIMAL\'
+					WHEN 6 THEN \'SERIAL\'
+					WHEN 7 THEN \'DATE\'
+					WHEN 8 THEN \'MONEY\'
+					WHEN 9 THEN \'NULL\'
+					WHEN 10 THEN \'DATETIME\'
+					WHEN 11 THEN \'BYTE\'
+					WHEN 12 THEN \'TEXT\'
+					WHEN 13 THEN \'VARCHAR\'
+					WHEN 14 THEN \'INTERVAL\'
+					WHEN 15 THEN \'NCHAR\'
+					WHEN 16 THEN \'NVARCHAR\'
+					WHEN 17 THEN \'INT8\'
+					WHEN 18 THEN \'SERIAL8\'
+					WHEN 19 THEN \'SET\'
+					WHEN 20 THEN \'MULTISET\'
+					WHEN 21 THEN \'LIST\'
+					WHEN 22 THEN \'Unnamed ROW\'
+					WHEN 40 THEN \'LVARCHAR\'
+					WHEN 41 THEN \'BLOB/CLOB/BOOLEAN\'
+					WHEN 4118 THEN \'Named ROW\'
+					ELSE "syscolumns"."coltype"
+				END AS "type",
+				"syscolumns"."collength" as "max_length",
+				CASE "sysdefaults"."type"
+					WHEN \'L\' THEN "sysdefaults"."default"
+					ELSE NULL
+				END AS "default"
+			FROM "syscolumns", "systables", "sysdefaults"
+			WHERE "syscolumns"."tabid" = "systables"."tabid"
+				AND "systables"."tabid" = "sysdefaults"."tabid"
+				AND "syscolumns"."colno" = "sysdefaults"."colno"
+				AND "systables"."tabtype" = \'T\'
+				AND LOWER("systables"."owner") = '.$this->escape(strtolower($this->username)).'
+				AND LOWER("systables"."tabname") = '.$this->escape(strtolower($table)).'
+			ORDER BY "syscolumns"."colno"';
+
+		return (($query = $this->query($sql)) !== FALSE)
+			? $query->result_object()
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE TABLE ONLY '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	$SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		$select = 'SELECT '.($this->qb_offset ? 'SKIP '.$this->qb_offset : '').'FIRST '.$this->qb_limit.' ';
+		return preg_replace('/^(SELECT\s)/i', $select, $sql, 1);
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_informix_forge.php b/system/database/drivers/pdo/subdrivers/pdo_informix_forge.php
new file mode 100644
index 00000000..91a93590
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_informix_forge.php
@@ -0,0 +1,163 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Informix Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_informix_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * RENAME TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_rename_table	= 'RENAME TABLE %s TO %s';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'SMALLINT'	=> 'INTEGER',
+		'INT'		=> 'BIGINT',
+		'INTEGER'	=> 'BIGINT',
+		'REAL'		=> 'DOUBLE PRECISION',
+		'SMALLFLOAT'	=> 'DOUBLE PRECISION'
+	);
+
+	/**
+	 * DEFAULT value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_default		= ', ';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'CHANGE')
+		{
+			$alter_type = 'MODIFY';
+		}
+
+		return parent::_alter_table($alter_type, $table, $field);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'BYTE':
+			case 'TEXT':
+			case 'BLOB':
+			case 'CLOB':
+				$attributes['UNIQUE'] = FALSE;
+				if (isset($attributes['DEFAULT']))
+				{
+					unset($attributes['DEFAULT']);
+				}
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute UNIQUE
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_unique(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['UNIQUE']) && $attributes['UNIQUE'] === TRUE)
+		{
+			$field['unique'] = ' UNIQUE CONSTRAINT '.$this->db->escape_identifiers($field['name']);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		// Not supported
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php b/system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php
new file mode 100644
index 00000000..0f53e319
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php
@@ -0,0 +1,379 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO MySQL Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_mysql_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'mysql';
+
+	/**
+	 * Compression flag
+	 *
+	 * @var	bool
+	 */
+	public $compress = FALSE;
+
+	/**
+	 * Strict ON flag
+	 *
+	 * Whether we're running in strict SQL mode.
+	 *
+	 * @var	bool
+	 */
+	public $stricton;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '`';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'mysql:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+			empty($this->port) OR $this->dsn .= ';port='.$this->port;
+			empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
+			empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+		}
+		elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 6) === FALSE)
+		{
+			$this->dsn .= ';charset='.$this->char_set;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	object
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		if (isset($this->stricton))
+		{
+			if ($this->stricton)
+			{
+				$sql = 'CONCAT(@@sql_mode, ",", "STRICT_ALL_TABLES")';
+			}
+			else
+			{
+				$sql = 'REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(
+                                        @@sql_mode,
+                                        "STRICT_ALL_TABLES,", ""),
+                                        ",STRICT_ALL_TABLES", ""),
+                                        "STRICT_ALL_TABLES", ""),
+                                        "STRICT_TRANS_TABLES,", ""),
+                                        ",STRICT_TRANS_TABLES", ""),
+                                        "STRICT_TRANS_TABLES", "")';
+			}
+
+			if ( ! empty($sql))
+			{
+				if (empty($this->options[PDO::MYSQL_ATTR_INIT_COMMAND]))
+				{
+					$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET SESSION sql_mode = '.$sql;
+				}
+				else
+				{
+					$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] .= ', @@session.sql_mode = '.$sql;
+				}
+			}
+		}
+
+		if ($this->compress === TRUE)
+		{
+			$this->options[PDO::MYSQL_ATTR_COMPRESS] = TRUE;
+		}
+
+		if (is_array($this->encrypt))
+		{
+			$ssl = array();
+			empty($this->encrypt['ssl_key'])    OR $ssl[PDO::MYSQL_ATTR_SSL_KEY]    = $this->encrypt['ssl_key'];
+			empty($this->encrypt['ssl_cert'])   OR $ssl[PDO::MYSQL_ATTR_SSL_CERT]   = $this->encrypt['ssl_cert'];
+			empty($this->encrypt['ssl_ca'])     OR $ssl[PDO::MYSQL_ATTR_SSL_CA]     = $this->encrypt['ssl_ca'];
+			empty($this->encrypt['ssl_capath']) OR $ssl[PDO::MYSQL_ATTR_SSL_CAPATH] = $this->encrypt['ssl_capath'];
+			empty($this->encrypt['ssl_cipher']) OR $ssl[PDO::MYSQL_ATTR_SSL_CIPHER] = $this->encrypt['ssl_cipher'];
+
+			if (defined('PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT') && isset($this->encrypt['ssl_verify']))
+			{
+				$ssl[PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT] = $this->encrypt['ssl_verify'];
+			}
+
+			// DO NOT use array_merge() here!
+			// It re-indexes numeric keys and the PDO_MYSQL_ATTR_SSL_* constants are integers.
+			empty($ssl) OR $this->options += $ssl;
+		}
+
+		// Prior to version 5.7.3, MySQL silently downgrades to an unencrypted connection if SSL setup fails
+		if (
+			($pdo = parent::db_connect($persistent)) !== FALSE
+			&& ! empty($ssl)
+			&& version_compare($pdo->getAttribute(PDO::ATTR_CLIENT_VERSION), '5.7.3', '<=')
+			&& empty($pdo->query("SHOW STATUS LIKE 'ssl_cipher'")->fetchObject()->Value)
+		)
+		{
+			$message = 'PDO_MYSQL was configured for an SSL connection, but got an unencrypted connection instead!';
+			log_message('error', $message);
+			return ($this->db_debug) ? $this->display_error($message, '', TRUE) : FALSE;
+		}
+
+		return $pdo;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @param	string	$database
+	 * @return	bool
+	 */
+	public function db_select($database = '')
+	{
+		if ($database === '')
+		{
+			$database = $this->database;
+		}
+
+		if (FALSE !== $this->simple_query('USE '.$this->escape_identifiers($database)))
+		{
+			$this->database = $database;
+			$this->data_cache = array();
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		$this->conn_id->setAttribute(PDO::ATTR_AUTOCOMMIT, FALSE);
+		return $this->conn_id->beginTransaction();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if ($this->conn_id->commit())
+		{
+			$this->conn_id->setAttribute(PDO::ATTR_AUTOCOMMIT, TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if ($this->conn_id->rollBack())
+		{
+			$this->conn_id->setAttribute(PDO::ATTR_AUTOCOMMIT, TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SHOW TABLES FROM '.$this->_escape_char.$this->database.$this->_escape_char;
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->Field;
+
+			sscanf($query[$i]->Type, '%[a-z](%d)',
+				$retval[$i]->type,
+				$retval[$i]->max_length
+			);
+
+			$retval[$i]->default		= $query[$i]->Default;
+			$retval[$i]->primary_key	= (int) ($query[$i]->Key === 'PRI');
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FROM tables
+	 *
+	 * Groups tables in FROM clauses if needed, so there is no confusion
+	 * about operator precedence.
+	 *
+	 * @return	string
+	 */
+	protected function _from_tables()
+	{
+		if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
+		{
+			return '('.implode(', ', $this->qb_from).')';
+		}
+
+		return implode(', ', $this->qb_from);
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_mysql_forge.php b/system/database/drivers/pdo/subdrivers/pdo_mysql_forge.php
new file mode 100644
index 00000000..7713f673
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_mysql_forge.php
@@ -0,0 +1,256 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO MySQL Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_mysql_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= 'CREATE DATABASE %s CHARACTER SET %s COLLATE %s';
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= 'CREATE TABLE IF NOT EXISTS';
+
+	/**
+	 * CREATE TABLE keys flag
+	 *
+	 * Whether table keys are created from within the
+	 * CREATE TABLE statement.
+	 *
+	 * @var	bool
+	 */
+	protected $_create_table_keys	= TRUE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT',
+		'SMALLINT',
+		'MEDIUMINT',
+		'INT',
+		'INTEGER',
+		'BIGINT',
+		'REAL',
+		'DOUBLE',
+		'DOUBLE PRECISION',
+		'FLOAT',
+		'DECIMAL',
+		'NUMERIC'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null = 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CREATE TABLE attributes
+	 *
+	 * @param	array	$attributes	Associative array of table attributes
+	 * @return	string
+	 */
+	protected function _create_table_attr($attributes)
+	{
+		$sql = '';
+
+		foreach (array_keys($attributes) as $key)
+		{
+			if (is_string($key))
+			{
+				$sql .= ' '.strtoupper($key).' = '.$attributes[$key];
+			}
+		}
+
+		if ( ! empty($this->db->char_set) && ! strpos($sql, 'CHARACTER SET') && ! strpos($sql, 'CHARSET'))
+		{
+			$sql .= ' DEFAULT CHARACTER SET = '.$this->db->char_set;
+		}
+
+		if ( ! empty($this->db->dbcollat) && ! strpos($sql, 'COLLATE'))
+		{
+			$sql .= ' COLLATE = '.$this->db->dbcollat;
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP')
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$field[$i] = ($alter_type === 'ADD')
+						? "\n\tADD ".$field[$i]['_literal']
+						: "\n\tMODIFY ".$field[$i]['_literal'];
+			}
+			else
+			{
+				if ($alter_type === 'ADD')
+				{
+					$field[$i]['_literal'] = "\n\tADD ";
+				}
+				else
+				{
+					$field[$i]['_literal'] = empty($field[$i]['new_name']) ? "\n\tMODIFY " : "\n\tCHANGE ";
+				}
+
+				$field[$i] = $field[$i]['_literal'].$this->_process_column($field[$i]);
+			}
+		}
+
+		return array($sql.implode(',', $field));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		$extra_clause = isset($field['after'])
+			? ' AFTER '.$this->db->escape_identifiers($field['after']) : '';
+
+		if (empty($extra_clause) && isset($field['first']) && $field['first'] === TRUE)
+		{
+			$extra_clause = ' FIRST';
+		}
+
+		return $this->db->escape_identifiers($field['name'])
+			.(empty($field['new_name']) ? '' : ' '.$this->db->escape_identifiers($field['new_name']))
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['null']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['unique']
+			.(empty($field['comment']) ? '' : ' COMMENT '.$field['comment'])
+			.$extra_clause;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process indexes
+	 *
+	 * @param	string	$table	(ignored)
+	 * @return	string
+	 */
+	protected function _process_indexes($table)
+	{
+		$sql = '';
+
+		for ($i = 0, $c = count($this->keys); $i < $c; $i++)
+		{
+			if (is_array($this->keys[$i]))
+			{
+				for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
+				{
+					if ( ! isset($this->fields[$this->keys[$i][$i2]]))
+					{
+						unset($this->keys[$i][$i2]);
+						continue;
+					}
+				}
+			}
+			elseif ( ! isset($this->fields[$this->keys[$i]]))
+			{
+				unset($this->keys[$i]);
+				continue;
+			}
+
+			is_array($this->keys[$i]) OR $this->keys[$i] = array($this->keys[$i]);
+
+			$sql .= ",\n\tKEY ".$this->db->escape_identifiers(implode('_', $this->keys[$i]))
+				.' ('.implode(', ', $this->db->escape_identifiers($this->keys[$i])).')';
+		}
+
+		$this->keys = array();
+
+		return $sql;
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php b/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php
new file mode 100644
index 00000000..82f0145b
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php
@@ -0,0 +1,326 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Oracle Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_oci_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'oci';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List of reserved identifiers
+	 *
+	 * Identifiers that must NOT be escaped.
+	 *
+	 * @var	string[]
+	 */
+	protected $_reserved_identifiers = array('*', 'rownum');
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('ASC', 'ASC'); // Currently not supported
+
+	/**
+	 * COUNT string
+	 *
+	 * @used-by	CI_DB_driver::count_all()
+	 * @used-by	CI_DB_query_builder::count_all_results()
+	 *
+	 * @var	string
+	 */
+	protected $_count_string = 'SELECT COUNT(1) AS ';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'oci:dbname=';
+
+			// Oracle has a slightly different PDO DSN format (Easy Connect),
+			// which also supports pre-defined DSNs.
+			if (empty($this->hostname) && empty($this->port))
+			{
+				$this->dsn .= $this->database;
+			}
+			else
+			{
+				$this->dsn .= '//'.(empty($this->hostname) ? '127.0.0.1' : $this->hostname)
+					.(empty($this->port) ? '' : ':'.$this->port).'/';
+
+				empty($this->database) OR $this->dsn .= $this->database;
+			}
+
+			empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+		}
+		elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 4) === FALSE)
+		{
+			$this->dsn .= ';charset='.$this->char_set;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		$version_string = parent::version();
+		if (preg_match('#(Release\s)?(?<version>\d+(?:\.\d+)+)#', $version_string, $match))
+		{
+			return $this->data_cache['version'] = $match['version'];
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "TABLE_NAME" FROM "ALL_TABLES"';
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			return $sql.' WHERE "TABLE_NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		if (strpos($table, '.') !== FALSE)
+		{
+			sscanf($table, '%[^.].%s', $owner, $table);
+		}
+		else
+		{
+			$owner = $this->username;
+		}
+
+		return 'SELECT COLUMN_NAME FROM ALL_TAB_COLUMNS
+			WHERE UPPER(OWNER) = '.$this->escape(strtoupper($owner)).'
+				AND UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (strpos($table, '.') !== FALSE)
+		{
+			sscanf($table, '%[^.].%s', $owner, $table);
+		}
+		else
+		{
+			$owner = $this->username;
+		}
+
+		$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHAR_LENGTH, DATA_PRECISION, DATA_LENGTH, DATA_DEFAULT, NULLABLE
+			FROM ALL_TAB_COLUMNS
+			WHERE UPPER(OWNER) = '.$this->escape(strtoupper($owner)).'
+				AND UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->COLUMN_NAME;
+			$retval[$i]->type		= $query[$i]->DATA_TYPE;
+
+			$length = ($query[$i]->CHAR_LENGTH > 0)
+				? $query[$i]->CHAR_LENGTH : $query[$i]->DATA_PRECISION;
+			if ($length === NULL)
+			{
+				$length = $query[$i]->DATA_LENGTH;
+			}
+			$retval[$i]->max_length		= $length;
+
+			$default = $query[$i]->DATA_DEFAULT;
+			if ($default === NULL && $query[$i]->NULLABLE === 'N')
+			{
+				$default = '';
+			}
+			$retval[$i]->default		= $query[$i]->COLUMN_DEFAULT;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return 	string
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		$keys = implode(', ', $keys);
+		$sql = "INSERT ALL\n";
+
+		for ($i = 0, $c = count($values); $i < $c; $i++)
+		{
+			$sql .= '	INTO '.$table.' ('.$keys.') VALUES '.$values[$i]."\n";
+		}
+
+		return $sql.'SELECT * FROM dual';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		if ($this->qb_limit)
+		{
+			$this->where('rownum <= ',$this->qb_limit, FALSE);
+			$this->qb_limit = FALSE;
+		}
+
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		if (version_compare($this->version(), '12.1', '>='))
+		{
+			// OFFSET-FETCH can be used only with the ORDER BY clause
+			empty($this->qb_orderby) && $sql .= ' ORDER BY 1';
+
+			return $sql.' OFFSET '.(int) $this->qb_offset.' ROWS FETCH NEXT '.$this->qb_limit.' ROWS ONLY';
+		}
+
+		return 'SELECT * FROM (SELECT inner_query.*, rownum rnum FROM ('.$sql.') inner_query WHERE rownum < '.($this->qb_offset + $this->qb_limit + 1).')'
+			.($this->qb_offset ? ' WHERE rnum >= '.($this->qb_offset + 1): '');
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_oci_forge.php b/system/database/drivers/pdo/subdrivers/pdo_oci_forge.php
new file mode 100644
index 00000000..0700d636
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_oci_forge.php
@@ -0,0 +1,207 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Oracle Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_oci_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= FALSE;
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= FALSE;
+
+	/**
+	 * DROP DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_database	= FALSE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= FALSE;
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP')
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+		elseif ($alter_type === 'CHANGE')
+		{
+			$alter_type = 'MODIFY';
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$field[$i] = "\n\t".$field[$i]['_literal'];
+			}
+			else
+			{
+				$field[$i]['_literal'] = "\n\t".$this->_process_column($field[$i]);
+
+				if ( ! empty($field[$i]['comment']))
+				{
+					$sqls[] = 'COMMENT ON COLUMN '
+						.$this->db->escape_identifiers($table).'.'.$this->db->escape_identifiers($field[$i]['name'])
+						.' IS '.$field[$i]['comment'];
+				}
+
+				if ($alter_type === 'MODIFY' && ! empty($field[$i]['new_name']))
+				{
+					$sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+						.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
+				}
+			}
+		}
+
+		$sql .= ' '.$alter_type.' ';
+		$sql .= (count($field) === 1)
+				? $field[0]
+				: '('.implode(',', $field).')';
+
+		// RENAME COLUMN must be executed after MODIFY
+		array_unshift($sqls, $sql);
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'number') !== FALSE && version_compare($this->db->version(), '12.1', '>='))
+		{
+			$field['auto_increment'] = ' GENERATED ALWAYS AS IDENTITY';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['null']
+			.$field['unique'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			case 'INT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			case 'BIGINT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			default: return;
+		}
+	}
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php b/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php
new file mode 100644
index 00000000..2522debe
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php
@@ -0,0 +1,229 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO ODBC Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_odbc_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'odbc';
+
+	/**
+	 * Database schema
+	 *
+	 * @var	string
+	 */
+	public $schema = 'public';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Identifier escape character
+	 *
+	 * Must be empty for ODBC.
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '';
+
+	/**
+	 * ESCAPE statement string
+	 *
+	 * @var	string
+	 */
+	protected $_like_escape_str = " {escape '%s'} ";
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RND()', 'RND(%d)');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'odbc:';
+
+			// Pre-defined DSN
+			if (empty($this->hostname) && empty($this->HOSTNAME) && empty($this->port) && empty($this->PORT))
+			{
+				if (isset($this->DSN))
+				{
+					$this->dsn .= 'DSN='.$this->DSN;
+				}
+				elseif ( ! empty($this->database))
+				{
+					$this->dsn .= 'DSN='.$this->database;
+				}
+
+				return;
+			}
+
+			// If the DSN is not pre-configured - try to build an IBM DB2 connection string
+			$this->dsn .= 'DRIVER='.(isset($this->DRIVER) ? '{'.$this->DRIVER.'}' : '{IBM DB2 ODBC DRIVER}').';';
+
+			if (isset($this->DATABASE))
+			{
+				$this->dsn .= 'DATABASE='.$this->DATABASE.';';
+			}
+			elseif ( ! empty($this->database))
+			{
+				$this->dsn .= 'DATABASE='.$this->database.';';
+			}
+
+			if (isset($this->HOSTNAME))
+			{
+				$this->dsn .= 'HOSTNAME='.$this->HOSTNAME.';';
+			}
+			else
+			{
+				$this->dsn .= 'HOSTNAME='.(empty($this->hostname) ? '127.0.0.1;' : $this->hostname.';');
+			}
+
+			if (isset($this->PORT))
+			{
+				$this->dsn .= 'PORT='.$this->port.';';
+			}
+			elseif ( ! empty($this->port))
+			{
+				$this->dsn .= ';PORT='.$this->port.';';
+			}
+
+			$this->dsn .= 'PROTOCOL='.(isset($this->PROTOCOL) ? $this->PROTOCOL.';' : 'TCPIP;');
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		$this->display_error('db_unsupported_feature');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determines if a query is a "write" type.
+	 *
+	 * @param	string	An SQL query string
+	 * @return	bool
+	 */
+	public function is_write_type($sql)
+	{
+		if (preg_match('#^(INSERT|UPDATE).*RETURNING\s.+(\,\s?.+)*$#is', $sql))
+		{
+			return FALSE;
+		}
+
+		return parent::is_write_type($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = '".$this->schema."'";
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql." AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT column_name FROM information_schema.columns WHERE table_name = '.$this->escape($table);
+	}
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_odbc_forge.php b/system/database/drivers/pdo/subdrivers/pdo_odbc_forge.php
new file mode 100644
index 00000000..47226d7a
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_odbc_forge.php
@@ -0,0 +1,70 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO ODBC Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/database/
+ */
+class CI_DB_pdo_odbc_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		// Not supported (in most databases at least)
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php b/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
new file mode 100644
index 00000000..f6241136
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
@@ -0,0 +1,384 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO PostgreSQL Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_pgsql_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'pgsql';
+
+	/**
+	 * Database schema
+	 *
+	 * @var	string
+	 */
+	public $schema = 'public';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RANDOM()', 'RANDOM()');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'pgsql:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+			empty($this->port) OR $this->dsn .= ';port='.$this->port;
+			empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
+
+			if ( ! empty($this->username))
+			{
+				$this->dsn .= ';user='.$this->username;
+				empty($this->password) OR $this->dsn .= ';password='.$this->password;
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	object
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		$this->conn_id = parent::db_connect($persistent);
+
+		if (is_object($this->conn_id) && ! empty($this->schema))
+		{
+			$this->simple_query('SET search_path TO '.$this->schema.',public');
+		}
+
+		return $this->conn_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @param	string	$name
+	 * @return	int
+	 */
+	public function insert_id($name = NULL)
+	{
+		if ($name === NULL && version_compare($this->version(), '8.1', '>='))
+		{
+			$query = $this->query('SELECT LASTVAL() AS ins_id');
+			$query = $query->row();
+			return $query->ins_id;
+		}
+
+		return $this->conn_id->lastInsertId($name);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determines if a query is a "write" type.
+	 *
+	 * @param	string	An SQL query string
+	 * @return	bool
+	 */
+	public function is_write_type($sql)
+	{
+		if (preg_match('#^(INSERT|UPDATE).*RETURNING\s.+(\,\s?.+)*$#is', $sql))
+		{
+			return FALSE;
+		}
+
+		return parent::is_write_type($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Smart" Escape String
+	 *
+	 * Escapes data based on type
+	 *
+	 * @param	string	$str
+	 * @return	mixed
+	 */
+	public function escape($str)
+	{
+		if (is_bool($str))
+		{
+			return ($str) ? 'TRUE' : 'FALSE';
+		}
+
+		return parent::escape($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY
+	 *
+	 * @param	string	$orderby
+	 * @param	string	$direction	ASC, DESC or RANDOM
+	 * @param	bool	$escape
+	 * @return	object
+	 */
+	public function order_by($orderby, $direction = '', $escape = NULL)
+	{
+		$direction = strtoupper(trim($direction));
+		if ($direction === 'RANDOM')
+		{
+			if ( ! is_float($orderby) && ctype_digit((string) $orderby))
+			{
+				$orderby = ($orderby > 1)
+					? (float) '0.'.$orderby
+					: (float) $orderby;
+			}
+
+			if (is_float($orderby))
+			{
+				$this->simple_query('SET SEED '.$orderby);
+			}
+
+			$orderby = $this->_random_keyword[0];
+			$direction = '';
+			$escape = FALSE;
+		}
+
+		return parent::order_by($orderby, $direction, $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "table_name" FROM "information_schema"."tables" WHERE "table_schema" = \''.$this->schema."'";
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			return $sql.' AND "table_name" LIKE \''
+				.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT "column_name"
+			FROM "information_schema"."columns"
+			WHERE "table_schema" = \''.$this->schema.'\' AND LOWER("table_name") = '.$this->escape(strtolower($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "column_name", "data_type", "character_maximum_length", "numeric_precision", "column_default"
+			FROM "information_schema"."columns"
+			WHERE "table_schema" = \''.$this->schema.'\' AND LOWER("table_name") = '.$this->escape(strtolower($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->column_name;
+			$retval[$i]->type		= $query[$i]->data_type;
+			$retval[$i]->max_length		= ($query[$i]->character_maximum_length > 0) ? $query[$i]->character_maximum_length : $query[$i]->numeric_precision;
+			$retval[$i]->default		= $query[$i]->column_default;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update_Batch statement
+	 *
+	 * Generates a platform-specific batch update string from the supplied data
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$values	Update data
+	 * @param	string	$index	WHERE key
+	 * @return	string
+	 */
+	protected function _update_batch($table, $values, $index)
+	{
+		$ids = array();
+		foreach ($values as $key => $val)
+		{
+			$ids[] = $val[$index]['value'];
+
+			foreach (array_keys($val) as $field)
+			{
+				if ($field !== $index)
+				{
+					$final[$val[$field]['field']][] = 'WHEN '.$val[$index]['value'].' THEN '.$val[$field]['value'];
+				}
+			}
+		}
+
+		$cases = '';
+		foreach ($final as $k => $v)
+		{
+			$cases .= $k.' = (CASE '.$val[$index]['field']."\n"
+				.implode("\n", $v)."\n"
+				.'ELSE '.$k.' END), ';
+		}
+
+		$this->where($val[$index]['field'].' IN('.implode(',', $ids).')', NULL, FALSE);
+
+		return 'UPDATE '.$table.' SET '.substr($cases, 0, -2).$this->_compile_wh('qb_where');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		return $sql.' LIMIT '.$this->qb_limit.($this->qb_offset ? ' OFFSET '.$this->qb_offset : '');
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php b/system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php
new file mode 100644
index 00000000..187cb2d0
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php
@@ -0,0 +1,210 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO PostgreSQL Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_pgsql_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'INT2'		=> 'INTEGER',
+		'SMALLINT'	=> 'INTEGER',
+		'INT'		=> 'BIGINT',
+		'INT4'		=> 'BIGINT',
+		'INTEGER'	=> 'BIGINT',
+		'INT8'		=> 'NUMERIC',
+		'BIGINT'	=> 'NUMERIC',
+		'REAL'		=> 'DOUBLE PRECISION',
+		'FLOAT'		=> 'DOUBLE PRECISION'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null = 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$db	Database object
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		parent::__construct($db);
+
+		if (version_compare($this->db->version(), '9.0', '>'))
+		{
+			$this->create_table_if = 'CREATE TABLE IF NOT EXISTS';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				return FALSE;
+			}
+
+			if (version_compare($this->db->version(), '8', '>=') && isset($field[$i]['type']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TYPE '.$field[$i]['type'].$field[$i]['length'];
+			}
+
+			if ( ! empty($field[$i]['default']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' SET '.$field[$i]['default'];
+			}
+
+			if (isset($field[$i]['null']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.(trim($field[$i]['null']) === $this->_null ? ' DROP NOT NULL' : ' SET NOT NULL');
+			}
+
+			if ( ! empty($field[$i]['new_name']))
+			{
+				$sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
+			}
+
+			if ( ! empty($field[$i]['comment']))
+			{
+				$sqls[] = 'COMMENT ON COLUMN '
+					.$this->db->escape_identifiers($table).'.'.$this->db->escape_identifiers($field[$i]['name'])
+					.' IS '.$field[$i]['comment'];
+			}
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		// Reset field lengths for data types that don't support it
+		if (isset($attributes['CONSTRAINT']) && stripos($attributes['TYPE'], 'int') !== FALSE)
+		{
+			$attributes['CONSTRAINT'] = NULL;
+		}
+
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE)
+		{
+			$field['type'] = ($field['type'] === 'NUMERIC')
+				? 'BIGSERIAL'
+				: 'SERIAL';
+		}
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_sqlite_driver.php b/system/database/drivers/pdo/subdrivers/pdo_sqlite_driver.php
new file mode 100644
index 00000000..634b837c
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_sqlite_driver.php
@@ -0,0 +1,213 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO SQLite Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_sqlite_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'sqlite';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RANDOM()', 'RANDOM()');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'sqlite:';
+
+			if (empty($this->database) && empty($this->hostname))
+			{
+				$this->database = ':memory:';
+			}
+
+			$this->database = empty($this->database) ? $this->hostname : $this->database;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "NAME" FROM "SQLITE_MASTER" WHERE "TYPE" = \'table\'';
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			return $sql.' AND "NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * @param	string	$table	Table name
+	 * @return	array
+	 */
+	public function list_fields($table)
+	{
+		if (($result = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$fields = array();
+		foreach ($result->result_array() as $row)
+		{
+			$fields[] = $row['name'];
+		}
+
+		return $fields;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$query = $query->result_array();
+		if (empty($query))
+		{
+			return FALSE;
+		}
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]['name'];
+			$retval[$i]->type		= $query[$i]['type'];
+			$retval[$i]->max_length		= NULL;
+			$retval[$i]->default		= $query[$i]['dflt_value'];
+			$retval[$i]->primary_key	= isset($query[$i]['pk']) ? (int) $query[$i]['pk'] : 0;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Replace statement
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return 	string
+	 */
+	protected function _replace($table, $keys, $values)
+	{
+		return 'INSERT OR '.parent::_replace($table, $keys, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'DELETE FROM '.$table;
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_sqlite_forge.php b/system/database/drivers/pdo/subdrivers/pdo_sqlite_forge.php
new file mode 100644
index 00000000..fd9696fb
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_sqlite_forge.php
@@ -0,0 +1,238 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO SQLite Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_sqlite_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= 'CREATE TABLE IF NOT EXISTS';
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= FALSE;
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$db	Database object
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		parent::__construct($db);
+
+		if (version_compare($this->db->version(), '3.3', '<'))
+		{
+			$this->_create_table_if = FALSE;
+			$this->_drop_table_if   = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create database
+	 *
+	 * @param	string	$db_name	(ignored)
+	 * @return	bool
+	 */
+	public function create_database($db_name)
+	{
+		// In SQLite, a database is created when you connect to the database.
+		// We'll return TRUE so that an error isn't generated
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @param	string	$db_name	(ignored)
+	 * @return	bool
+	 */
+	public function drop_database($db_name)
+	{
+		// In SQLite, a database is dropped when we delete a file
+		if (file_exists($this->db->database))
+		{
+			// We need to close the pseudo-connection first
+			$this->db->close();
+			if ( ! @unlink($this->db->database))
+			{
+				return $this->db->db_debug ? $this->db->display_error('db_unable_to_drop') : FALSE;
+			}
+			elseif ( ! empty($this->db->data_cache['db_names']))
+			{
+				$key = array_search(strtolower($this->db->database), array_map('strtolower', $this->db->data_cache['db_names']), TRUE);
+				if ($key !== FALSE)
+				{
+					unset($this->db->data_cache['db_names'][$key]);
+				}
+			}
+
+			return TRUE;
+		}
+
+		return $this->db->db_debug ? $this->db->display_error('db_unable_to_drop') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP' OR $alter_type === 'CHANGE')
+		{
+			// drop_column():
+			//	BEGIN TRANSACTION;
+			//	CREATE TEMPORARY TABLE t1_backup(a,b);
+			//	INSERT INTO t1_backup SELECT a,b FROM t1;
+			//	DROP TABLE t1;
+			//	CREATE TABLE t1(a,b);
+			//	INSERT INTO t1 SELECT a,b FROM t1_backup;
+			//	DROP TABLE t1_backup;
+			//	COMMIT;
+
+			return FALSE;
+		}
+
+		return parent::_alter_table($alter_type, $table, $field);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type']
+			.$field['auto_increment']
+			.$field['null']
+			.$field['unique']
+			.$field['default'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'ENUM':
+			case 'SET':
+				$attributes['TYPE'] = 'TEXT';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['type'] = 'INTEGER PRIMARY KEY';
+			$field['default'] = '';
+			$field['null'] = '';
+			$field['unique'] = '';
+			$field['auto_increment'] = ' AUTOINCREMENT';
+
+			$this->primary_keys = array();
+		}
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php b/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php
new file mode 100644
index 00000000..1c83593d
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php
@@ -0,0 +1,369 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO SQLSRV Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_sqlsrv_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'sqlsrv';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('NEWID()', 'RAND(%d)');
+
+	/**
+	 * Quoted identifier flag
+	 *
+	 * Whether to use SQL-92 standard quoted identifier
+	 * (double quotes) or brackets for identifier escaping.
+	 *
+	 * @var	bool
+	 */
+	protected $_quoted_identifier;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'sqlsrv:Server='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+			empty($this->port) OR $this->dsn .= ','.$this->port;
+			empty($this->database) OR $this->dsn .= ';Database='.$this->database;
+
+			// Some custom options
+
+			if (isset($this->QuotedId))
+			{
+				$this->dsn .= ';QuotedId='.$this->QuotedId;
+				$this->_quoted_identifier = (bool) $this->QuotedId;
+			}
+
+			if (isset($this->ConnectionPooling))
+			{
+				$this->dsn .= ';ConnectionPooling='.$this->ConnectionPooling;
+			}
+
+			if ($this->encrypt === TRUE)
+			{
+				$this->dsn .= ';Encrypt=1';
+			}
+
+			if (isset($this->TraceOn))
+			{
+				$this->dsn .= ';TraceOn='.$this->TraceOn;
+			}
+
+			if (isset($this->TrustServerCertificate))
+			{
+				$this->dsn .= ';TrustServerCertificate='.$this->TrustServerCertificate;
+			}
+
+			empty($this->APP) OR $this->dsn .= ';APP='.$this->APP;
+			empty($this->Failover_Partner) OR $this->dsn .= ';Failover_Partner='.$this->Failover_Partner;
+			empty($this->LoginTimeout) OR $this->dsn .= ';LoginTimeout='.$this->LoginTimeout;
+			empty($this->MultipleActiveResultSets) OR $this->dsn .= ';MultipleActiveResultSets='.$this->MultipleActiveResultSets;
+			empty($this->TraceFile) OR $this->dsn .= ';TraceFile='.$this->TraceFile;
+			empty($this->WSID) OR $this->dsn .= ';WSID='.$this->WSID;
+		}
+		elseif (preg_match('/QuotedId=(0|1)/', $this->dsn, $match))
+		{
+			$this->_quoted_identifier = (bool) $match[1];
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	object
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		if ( ! empty($this->char_set) && preg_match('/utf[^8]*8/i', $this->char_set))
+		{
+			$this->options[PDO::SQLSRV_ENCODING_UTF8] = 1;
+		}
+
+		$this->conn_id = parent::db_connect($persistent);
+
+		if ( ! is_object($this->conn_id) OR is_bool($this->_quoted_identifier))
+		{
+			return $this->conn_id;
+		}
+
+		// Determine how identifiers are escaped
+		$query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
+		$query = $query->row_array();
+		$this->_quoted_identifier = empty($query) ? FALSE : (bool) $query['qi'];
+		$this->_escape_char = ($this->_quoted_identifier) ? '"' : array('[', ']');
+
+		return $this->conn_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT '.$this->escape_identifiers('name')
+			.' FROM '.$this->escape_identifiers('sysobjects')
+			.' WHERE '.$this->escape_identifiers('type')." = 'U'";
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			$sql .= ' AND '.$this->escape_identifiers('name')." LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql.' ORDER BY '.$this->escape_identifiers('name');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT COLUMN_NAME
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, COLUMN_DEFAULT
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->COLUMN_NAME;
+			$retval[$i]->type		= $query[$i]->DATA_TYPE;
+			$retval[$i]->max_length		= ($query[$i]->CHARACTER_MAXIMUM_LENGTH > 0) ? $query[$i]->CHARACTER_MAXIMUM_LENGTH : $query[$i]->NUMERIC_PRECISION;
+			$retval[$i]->default		= $query[$i]->COLUMN_DEFAULT;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		if ($this->qb_limit)
+		{
+			return 'WITH ci_delete AS (SELECT TOP '.$this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
+		}
+
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		// As of SQL Server 2012 (11.0.*) OFFSET is supported
+		if (version_compare($this->version(), '11', '>='))
+		{
+			// SQL Server OFFSET-FETCH can be used only with the ORDER BY clause
+			empty($this->qb_orderby) && $sql .= ' ORDER BY 1';
+
+			return $sql.' OFFSET '.(int) $this->qb_offset.' ROWS FETCH NEXT '.$this->qb_limit.' ROWS ONLY';
+		}
+
+		$limit = $this->qb_offset + $this->qb_limit;
+
+		// An ORDER BY clause is required for ROW_NUMBER() to work
+		if ($this->qb_offset && ! empty($this->qb_orderby))
+		{
+			$orderby = $this->_compile_order_by();
+
+			// We have to strip the ORDER BY clause
+			$sql = trim(substr($sql, 0, strrpos($sql, $orderby)));
+
+			// Get the fields to select from our subquery, so that we can avoid CI_rownum appearing in the actual results
+			if (count($this->qb_select) === 0 OR strpos(implode(',', $this->qb_select), '*') !== FALSE)
+			{
+				$select = '*'; // Inevitable
+			}
+			else
+			{
+				// Use only field names and their aliases, everything else is out of our scope.
+				$select = array();
+				$field_regexp = ($this->_quoted_identifier)
+					? '("[^\"]+")' : '(\[[^\]]+\])';
+				for ($i = 0, $c = count($this->qb_select); $i < $c; $i++)
+				{
+					$select[] = preg_match('/(?:\s|\.)'.$field_regexp.'$/i', $this->qb_select[$i], $m)
+						? $m[1] : $this->qb_select[$i];
+				}
+				$select = implode(', ', $select);
+			}
+
+			return 'SELECT '.$select." FROM (\n\n"
+				.preg_replace('/^(SELECT( DISTINCT)?)/i', '\\1 ROW_NUMBER() OVER('.trim($orderby).') AS '.$this->escape_identifiers('CI_rownum').', ', $sql)
+				."\n\n) ".$this->escape_identifiers('CI_subquery')
+				."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.($this->qb_offset + 1).' AND '.$limit;
+		}
+
+		return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		// Multiple-value inserts are only supported as of SQL Server 2008
+		if (version_compare($this->version(), '10', '>='))
+		{
+			return parent::_insert_batch($table, $keys, $values);
+		}
+
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_forge.php b/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_forge.php
new file mode 100644
index 00000000..22375949
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_forge.php
@@ -0,0 +1,149 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO SQLSRV Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_sqlsrv_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= "IF NOT EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nCREATE TABLE";
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= "IF EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nDROP TABLE";
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT'	=> 'SMALLINT',
+		'SMALLINT'	=> 'INT',
+		'INT'		=> 'BIGINT',
+		'REAL'		=> 'FLOAT'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('ADD', 'DROP'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table).' ALTER COLUMN ';
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			$sqls[] = $sql.$this->_process_column($field[$i]);
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		if (isset($attributes['CONSTRAINT']) && strpos($attributes['TYPE'], 'INT') !== FALSE)
+		{
+			unset($attributes['CONSTRAINT']);
+		}
+
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INTEGER':
+				$attributes['TYPE'] = 'INT';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['auto_increment'] = ' IDENTITY(1,1)';
+		}
+	}
+
+}
diff --git a/system/database/drivers/postgre/index.html b/system/database/drivers/postgre/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/postgre/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
new file mode 100644
index 00000000..af636e3f
--- /dev/null
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -0,0 +1,604 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Postgre Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_postgre_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'postgre';
+
+	/**
+	 * Database schema
+	 *
+	 * @var	string
+	 */
+	public $schema = 'public';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RANDOM()', 'RANDOM()');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Build DSN
+	 *
+	 * @return	void
+	 */
+	protected function _build_dsn()
+	{
+		$this->dsn === '' OR $this->dsn = '';
+
+		if (strpos($this->hostname, '/') !== FALSE)
+		{
+			// If UNIX sockets are used, we shouldn't set a port
+			$this->port = '';
+		}
+
+		$this->hostname === '' OR $this->dsn = 'host='.$this->hostname.' ';
+
+		if ( ! empty($this->port) && ctype_digit($this->port))
+		{
+			$this->dsn .= 'port='.$this->port.' ';
+		}
+
+		if ($this->username !== '')
+		{
+			$this->dsn .= 'user='.$this->username.' ';
+
+			/* An empty password is valid!
+			 *
+			 * $db['password'] = NULL must be done in order to ignore it.
+			 */
+			$this->password === NULL OR $this->dsn .= "password='".$this->password."' ";
+		}
+
+		$this->database === '' OR $this->dsn .= 'dbname='.$this->database.' ';
+
+		/* We don't have these options as elements in our standard configuration
+		 * array, but they might be set by parse_url() if the configuration was
+		 * provided via string. Example:
+		 *
+		 * postgre://username:password@localhost:5432/database?connect_timeout=5&sslmode=1
+		 */
+		foreach (array('connect_timeout', 'options', 'sslmode', 'service') as $key)
+		{
+			if (isset($this->$key) && is_string($this->$key) && $this->$key !== '')
+			{
+				$this->dsn .= $key."='".$this->$key."' ";
+			}
+		}
+
+		$this->dsn = rtrim($this->dsn);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		empty($this->dsn) && $this->_build_dsn();
+		$this->conn_id = ($persistent === TRUE)
+			? pg_pconnect($this->dsn)
+			: pg_connect($this->dsn);
+
+		if ($this->conn_id !== FALSE)
+		{
+			if ($persistent === TRUE
+				&& pg_connection_status($this->conn_id) === PGSQL_CONNECTION_BAD
+				&& pg_ping($this->conn_id) === FALSE
+			)
+			{
+				return FALSE;
+			}
+
+			if (pg_set_client_encoding($this->conn_id, $this->char_set) !== 0)
+			{
+				log_message('error', "Database: Unable to set the configured connection charset ('{$this->char_set}').");
+				pg_close($this->conn_id);
+				return ($this->db->db_debug) ? $this->display_error('db_unable_to_set_charset', $this->char_set) : FALSE;
+			}
+
+			empty($this->schema) OR $this->simple_query('SET search_path TO '.$this->schema.',public');
+		}
+
+		return $this->conn_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout
+	 *
+	 * @return	void
+	 */
+	public function reconnect()
+	{
+		if (pg_ping($this->conn_id) === FALSE)
+		{
+			$this->conn_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if ( ! $this->conn_id OR ($pg_version = pg_version($this->conn_id)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		/* If PHP was compiled with PostgreSQL lib versions earlier
+		 * than 7.4, pg_version() won't return the server version
+		 * and so we'll have to fall back to running a query in
+		 * order to get it.
+		 */
+		return (isset($pg_version['server']) && preg_match('#^(\d+\.\d+)#', $pg_version['server'], $match))
+			? $this->data_cache['version'] = $match[1]
+			: parent::version();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		return pg_query($this->conn_id, $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		return (bool) pg_query($this->conn_id, 'BEGIN');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		return (bool) pg_query($this->conn_id, 'COMMIT');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		return (bool) pg_query($this->conn_id, 'ROLLBACK');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determines if a query is a "write" type.
+	 *
+	 * @param	string	An SQL query string
+	 * @return	bool
+	 */
+	public function is_write_type($sql)
+	{
+		if (preg_match('#^(INSERT|UPDATE).*RETURNING\s.+(\,\s?.+)*$#is', $sql))
+		{
+			return FALSE;
+		}
+
+		return parent::is_write_type($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		return pg_escape_string($this->conn_id, $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Smart" Escape String
+	 *
+	 * Escapes data based on type
+	 *
+	 * @param	string	$str
+	 * @return	mixed
+	 */
+	public function escape($str)
+	{
+		if (is_string($str) OR (is_object($str) && method_exists($str, '__toString')))
+		{
+			return pg_escape_literal($this->conn_id, $str);
+		}
+		elseif (is_bool($str))
+		{
+			return ($str) ? 'TRUE' : 'FALSE';
+		}
+
+		return parent::escape($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return pg_affected_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	string
+	 */
+	public function insert_id()
+	{
+		$v = $this->version();
+
+		$table	= (func_num_args() > 0) ? func_get_arg(0) : NULL;
+		$column	= (func_num_args() > 1) ? func_get_arg(1) : NULL;
+
+		if ($table === NULL && $v >= '8.1')
+		{
+			$sql = 'SELECT LASTVAL() AS ins_id';
+		}
+		elseif ($table !== NULL)
+		{
+			if ($column !== NULL && $v >= '8.0')
+			{
+				$sql = 'SELECT pg_get_serial_sequence(\''.$table."', '".$column."') AS seq";
+				$query = $this->query($sql);
+				$query = $query->row();
+				$seq = $query->seq;
+			}
+			else
+			{
+				// seq_name passed in table parameter
+				$seq = $table;
+			}
+
+			$sql = 'SELECT CURRVAL(\''.$seq."') AS ins_id";
+		}
+		else
+		{
+			return pg_last_oid($this->result_id);
+		}
+
+		$query = $this->query($sql);
+		$query = $query->row();
+		return (int) $query->ins_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "table_name" FROM "information_schema"."tables" WHERE "table_schema" = \''.$this->schema."'";
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql.' AND "table_name" LIKE \''
+				.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT "column_name"
+			FROM "information_schema"."columns"
+			WHERE "table_schema" = \''.$this->schema.'\' AND LOWER("table_name") = '.$this->escape(strtolower($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "column_name", "data_type", "character_maximum_length", "numeric_precision", "column_default"
+			FROM "information_schema"."columns"
+			WHERE "table_schema" = \''.$this->schema.'\' AND LOWER("table_name") = '.$this->escape(strtolower($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->column_name;
+			$retval[$i]->type		= $query[$i]->data_type;
+			$retval[$i]->max_length		= ($query[$i]->character_maximum_length > 0) ? $query[$i]->character_maximum_length : $query[$i]->numeric_precision;
+			$retval[$i]->default		= $query[$i]->column_default;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => '', 'message' => pg_last_error($this->conn_id));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY
+	 *
+	 * @param	string	$orderby
+	 * @param	string	$direction	ASC, DESC or RANDOM
+	 * @param	bool	$escape
+	 * @return	object
+	 */
+	public function order_by($orderby, $direction = '', $escape = NULL)
+	{
+		$direction = strtoupper(trim($direction));
+		if ($direction === 'RANDOM')
+		{
+			if ( ! is_float($orderby) && ctype_digit((string) $orderby))
+			{
+				$orderby = ($orderby > 1)
+					? (float) '0.'.$orderby
+					: (float) $orderby;
+			}
+
+			if (is_float($orderby))
+			{
+				$this->simple_query('SET SEED '.$orderby);
+			}
+
+			$orderby = $this->_random_keyword[0];
+			$direction = '';
+			$escape = FALSE;
+		}
+
+		return parent::order_by($orderby, $direction, $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update_Batch statement
+	 *
+	 * Generates a platform-specific batch update string from the supplied data
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$values	Update data
+	 * @param	string	$index	WHERE key
+	 * @return	string
+	 */
+	protected function _update_batch($table, $values, $index)
+	{
+		$ids = array();
+		foreach ($values as $key => $val)
+		{
+			$ids[] = $val[$index]['value'];
+
+			foreach (array_keys($val) as $field)
+			{
+				if ($field !== $index)
+				{
+					$final[$val[$field]['field']][] = 'WHEN '.$val[$index]['value'].' THEN '.$val[$field]['value'];
+				}
+			}
+		}
+
+		$cases = '';
+		foreach ($final as $k => $v)
+		{
+			$cases .= $k.' = (CASE '.$val[$index]['field']."\n"
+				.implode("\n", $v)."\n"
+				.'ELSE '.$k.' END), ';
+		}
+
+		$this->where($val[$index]['field'].' IN('.implode(',', $ids).')', NULL, FALSE);
+
+		return 'UPDATE '.$table.' SET '.substr($cases, 0, -2).$this->_compile_wh('qb_where');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		return $sql.' LIMIT '.$this->qb_limit.($this->qb_offset ? ' OFFSET '.$this->qb_offset : '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		pg_close($this->conn_id);
+	}
+
+}
diff --git a/system/database/drivers/postgre/postgre_forge.php b/system/database/drivers/postgre/postgre_forge.php
new file mode 100644
index 00000000..6f214c66
--- /dev/null
+++ b/system/database/drivers/postgre/postgre_forge.php
@@ -0,0 +1,205 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Postgre Forge Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_postgre_forge extends CI_DB_forge {
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'INT2'		=> 'INTEGER',
+		'SMALLINT'	=> 'INTEGER',
+		'INT'		=> 'BIGINT',
+		'INT4'		=> 'BIGINT',
+		'INTEGER'	=> 'BIGINT',
+		'INT8'		=> 'NUMERIC',
+		'BIGINT'	=> 'NUMERIC',
+		'REAL'		=> 'DOUBLE PRECISION',
+		'FLOAT'		=> 'DOUBLE PRECISION'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null = 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$db	Database object
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		parent::__construct($db);
+
+		if (version_compare($this->db->version(), '9.0', '>'))
+		{
+			$this->create_table_if = 'CREATE TABLE IF NOT EXISTS';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				return FALSE;
+			}
+
+			if (version_compare($this->db->version(), '8', '>=') && isset($field[$i]['type']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TYPE '.$field[$i]['type'].$field[$i]['length'];
+			}
+
+			if ( ! empty($field[$i]['default']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' SET '.$field[$i]['default'];
+			}
+
+			if (isset($field[$i]['null']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.(trim($field[$i]['null']) === $this->_null ? ' DROP NOT NULL' : ' SET NOT NULL');
+			}
+
+			if ( ! empty($field[$i]['new_name']))
+			{
+				$sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
+			}
+
+			if ( ! empty($field[$i]['comment']))
+			{
+				$sqls[] = 'COMMENT ON COLUMN '
+					.$this->db->escape_identifiers($table).'.'.$this->db->escape_identifiers($field[$i]['name'])
+					.' IS '.$field[$i]['comment'];
+			}
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		// Reset field lengths for data types that don't support it
+		if (isset($attributes['CONSTRAINT']) && stripos($attributes['TYPE'], 'int') !== FALSE)
+		{
+			$attributes['CONSTRAINT'] = NULL;
+		}
+
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE)
+		{
+			$field['type'] = ($field['type'] === 'NUMERIC')
+				? 'BIGSERIAL'
+				: 'SERIAL';
+		}
+	}
+
+}
diff --git a/system/database/drivers/postgre/postgre_result.php b/system/database/drivers/postgre/postgre_result.php
new file mode 100644
index 00000000..a0a628f0
--- /dev/null
+++ b/system/database/drivers/postgre/postgre_result.php
@@ -0,0 +1,182 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Postgres Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_postgre_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		return is_int($this->num_rows)
+			? $this->num_rows
+			: $this->num_rows = pg_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return pg_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$field_names[] = pg_field_name($this->result_id, $i);
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= pg_field_name($this->result_id, $i);
+			$retval[$i]->type		= pg_field_type($this->result_id, $i);
+			$retval[$i]->max_length		= pg_field_size($this->result_id, $i);
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id))
+		{
+			pg_free_result($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * @param	int	$n
+	 * @return	bool
+	 */
+	public function data_seek($n = 0)
+	{
+		return pg_result_seek($this->result_id, $n);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return pg_fetch_assoc($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return pg_fetch_object($this->result_id, NULL, $class_name);
+	}
+
+}
diff --git a/system/database/drivers/postgre/postgre_utility.php b/system/database/drivers/postgre/postgre_utility.php
new file mode 100644
index 00000000..e6e7b28b
--- /dev/null
+++ b/system/database/drivers/postgre/postgre_utility.php
@@ -0,0 +1,78 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Postgre Utility Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_postgre_utility extends CI_DB_utility {
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases	= 'SELECT datname FROM pg_database';
+
+	/**
+	 * OPTIMIZE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_optimize_table	= 'REINDEX TABLE %s';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+}
diff --git a/system/database/drivers/sqlite3/index.html b/system/database/drivers/sqlite3/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/sqlite3/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/sqlite3/sqlite3_driver.php b/system/database/drivers/sqlite3/sqlite3_driver.php
new file mode 100644
index 00000000..d456250f
--- /dev/null
+++ b/system/database/drivers/sqlite3/sqlite3_driver.php
@@ -0,0 +1,344 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLite3 Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlite3_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'sqlite3';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RANDOM()', 'RANDOM()');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	SQLite3
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		if ($persistent)
+		{
+			log_message('debug', 'SQLite3 doesn\'t support persistent connections');
+		}
+
+		try
+		{
+			return ( ! $this->password)
+				? new SQLite3($this->database)
+				: new SQLite3($this->database, SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE, $this->password);
+		}
+		catch (Exception $e)
+		{
+			return FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		$version = SQLite3::version();
+		return $this->data_cache['version'] = $version['versionString'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @todo	Implement use of SQLite3::querySingle(), if needed
+	 * @param	string	$sql
+	 * @return	mixed	SQLite3Result object or bool
+	 */
+	protected function _execute($sql)
+	{
+		return $this->is_write_type($sql)
+			? $this->conn_id->exec($sql)
+			: $this->conn_id->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		return $this->conn_id->exec('BEGIN TRANSACTION');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		return $this->conn_id->exec('END TRANSACTION');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		return $this->conn_id->exec('ROLLBACK');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		return $this->conn_id->escapeString($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return $this->conn_id->changes();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	int
+	 */
+	public function insert_id()
+	{
+		return $this->conn_id->lastInsertRowID();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		return 'SELECT "NAME" FROM "SQLITE_MASTER" WHERE "TYPE" = \'table\''
+			.(($prefix_limit !== FALSE && $this->dbprefix != '')
+				? ' AND "NAME" LIKE \''.$this->escape_like_str($this->dbprefix).'%\' '.sprintf($this->_like_escape_str, $this->_like_escape_chr)
+				: '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * @param	string	$table	Table name
+	 * @return	array
+	 */
+	public function list_fields($table)
+	{
+		if (($result = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$fields = array();
+		foreach ($result->result_array() as $row)
+		{
+			$fields[] = $row['name'];
+		}
+
+		return $fields;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$query = $query->result_array();
+		if (empty($query))
+		{
+			return FALSE;
+		}
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]['name'];
+			$retval[$i]->type		= $query[$i]['type'];
+			$retval[$i]->max_length		= NULL;
+			$retval[$i]->default		= $query[$i]['dflt_value'];
+			$retval[$i]->primary_key	= isset($query[$i]['pk']) ? (int) $query[$i]['pk'] : 0;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => $this->conn_id->lastErrorCode(), 'message' => $this->conn_id->lastErrorMsg());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Replace statement
+	 *
+	 * Generates a platform-specific replace string from the supplied data
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string
+	 */
+	protected function _replace($table, $keys, $values)
+	{
+		return 'INSERT OR '.parent::_replace($table, $keys, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'DELETE FROM '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		$this->conn_id->close();
+	}
+
+}
diff --git a/system/database/drivers/sqlite3/sqlite3_forge.php b/system/database/drivers/sqlite3/sqlite3_forge.php
new file mode 100644
index 00000000..52894e85
--- /dev/null
+++ b/system/database/drivers/sqlite3/sqlite3_forge.php
@@ -0,0 +1,225 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLite3 Forge Class
+ *
+ * @category	Database
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlite3_forge extends CI_DB_forge {
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= FALSE;
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$db	Database object
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		parent::__construct($db);
+
+		if (version_compare($this->db->version(), '3.3', '<'))
+		{
+			$this->_create_table_if = FALSE;
+			$this->_drop_table_if   = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create database
+	 *
+	 * @param	string	$db_name
+	 * @return	bool
+	 */
+	public function create_database($db_name)
+	{
+		// In SQLite, a database is created when you connect to the database.
+		// We'll return TRUE so that an error isn't generated
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @param	string	$db_name	(ignored)
+	 * @return	bool
+	 */
+	public function drop_database($db_name)
+	{
+		// In SQLite, a database is dropped when we delete a file
+		if (file_exists($this->db->database))
+		{
+			// We need to close the pseudo-connection first
+			$this->db->close();
+			if ( ! @unlink($this->db->database))
+			{
+				return $this->db->db_debug ? $this->db->display_error('db_unable_to_drop') : FALSE;
+			}
+			elseif ( ! empty($this->db->data_cache['db_names']))
+			{
+				$key = array_search(strtolower($this->db->database), array_map('strtolower', $this->db->data_cache['db_names']), TRUE);
+				if ($key !== FALSE)
+				{
+					unset($this->db->data_cache['db_names'][$key]);
+				}
+			}
+
+			return TRUE;
+		}
+
+		return $this->db->db_debug ? $this->db->display_error('db_unable_to_drop') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @todo	implement drop_column(), modify_column()
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP' OR $alter_type === 'CHANGE')
+		{
+			// drop_column():
+			//	BEGIN TRANSACTION;
+			//	CREATE TEMPORARY TABLE t1_backup(a,b);
+			//	INSERT INTO t1_backup SELECT a,b FROM t1;
+			//	DROP TABLE t1;
+			//	CREATE TABLE t1(a,b);
+			//	INSERT INTO t1 SELECT a,b FROM t1_backup;
+			//	DROP TABLE t1_backup;
+			//	COMMIT;
+
+			return FALSE;
+		}
+
+		return parent::_alter_table($alter_type, $table, $field);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type']
+			.$field['auto_increment']
+			.$field['null']
+			.$field['unique']
+			.$field['default'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'ENUM':
+			case 'SET':
+				$attributes['TYPE'] = 'TEXT';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['type'] = 'INTEGER PRIMARY KEY';
+			$field['default'] = '';
+			$field['null'] = '';
+			$field['unique'] = '';
+			$field['auto_increment'] = ' AUTOINCREMENT';
+
+			$this->primary_keys = array();
+		}
+	}
+
+}
diff --git a/system/database/drivers/sqlite3/sqlite3_result.php b/system/database/drivers/sqlite3/sqlite3_result.php
new file mode 100644
index 00000000..a48cbcf5
--- /dev/null
+++ b/system/database/drivers/sqlite3/sqlite3_result.php
@@ -0,0 +1,194 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLite3 Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlite3_result extends CI_DB_result {
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return $this->result_id->numColumns();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$field_names[] = $this->result_id->columnName($i);
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		static $data_types = array(
+			SQLITE3_INTEGER	=> 'integer',
+			SQLITE3_FLOAT	=> 'float',
+			SQLITE3_TEXT	=> 'text',
+			SQLITE3_BLOB	=> 'blob',
+			SQLITE3_NULL	=> 'null'
+		);
+
+		$retval = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $this->result_id->columnName($i);
+
+			$type = $this->result_id->columnType($i);
+			$retval[$i]->type		= isset($data_types[$type]) ? $data_types[$type] : $type;
+
+			$retval[$i]->max_length		= NULL;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_object($this->result_id))
+		{
+			$this->result_id->finalize();
+			$this->result_id = NULL;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return $this->result_id->fetchArray(SQLITE3_ASSOC);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		// No native support for fetching rows as objects
+		if (($row = $this->result_id->fetchArray(SQLITE3_ASSOC)) === FALSE)
+		{
+			return FALSE;
+		}
+		elseif ($class_name === 'stdClass')
+		{
+			return (object) $row;
+		}
+
+		$class_name = new $class_name();
+		foreach (array_keys($row) as $key)
+		{
+			$class_name->$key = $row[$key];
+		}
+
+		return $class_name;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * @param	int	$n	(ignored)
+	 * @return	array
+	 */
+	public function data_seek($n = 0)
+	{
+		// Only resetting to the start of the result set is supported
+		return ($n > 0) ? FALSE : $this->result_id->reset();
+	}
+
+}
diff --git a/system/database/drivers/sqlite3/sqlite3_utility.php b/system/database/drivers/sqlite3/sqlite3_utility.php
new file mode 100644
index 00000000..c80dd4f9
--- /dev/null
+++ b/system/database/drivers/sqlite3/sqlite3_utility.php
@@ -0,0 +1,61 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLite3 Utility Class
+ *
+ * @category	Database
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlite3_utility extends CI_DB_utility {
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		// Not supported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+
+}
diff --git a/system/database/drivers/sqlsrv/index.html b/system/database/drivers/sqlsrv/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/sqlsrv/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/sqlsrv/sqlsrv_driver.php b/system/database/drivers/sqlsrv/sqlsrv_driver.php
new file mode 100644
index 00000000..33f971ff
--- /dev/null
+++ b/system/database/drivers/sqlsrv/sqlsrv_driver.php
@@ -0,0 +1,543 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.3
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLSRV Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlsrv_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'sqlsrv';
+
+	/**
+	 * Scrollable flag
+	 *
+	 * Determines what cursor type to use when executing queries.
+	 *
+	 * FALSE or SQLSRV_CURSOR_FORWARD would increase performance,
+	 * but would disable num_rows() (and possibly insert_id())
+	 *
+	 * @var	mixed
+	 */
+	public $scrollable;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('NEWID()', 'RAND(%d)');
+
+	/**
+	 * Quoted identifier flag
+	 *
+	 * Whether to use SQL-92 standard quoted identifier
+	 * (double quotes) or brackets for identifier escaping.
+	 *
+	 * @var	bool
+	 */
+	protected $_quoted_identifier = TRUE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		// This is only supported as of SQLSRV 3.0
+		if ($this->scrollable === NULL)
+		{
+			$this->scrollable = defined('SQLSRV_CURSOR_CLIENT_BUFFERED')
+				? SQLSRV_CURSOR_CLIENT_BUFFERED
+				: FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$pooling
+	 * @return	resource
+	 */
+	public function db_connect($pooling = FALSE)
+	{
+		$charset = in_array(strtolower($this->char_set), array('utf-8', 'utf8'), TRUE)
+			? 'UTF-8' : SQLSRV_ENC_CHAR;
+
+		$connection = array(
+			'UID'			=> empty($this->username) ? '' : $this->username,
+			'PWD'			=> empty($this->password) ? '' : $this->password,
+			'Database'		=> $this->database,
+			'ConnectionPooling'	=> ($pooling === TRUE) ? 1 : 0,
+			'CharacterSet'		=> $charset,
+			'Encrypt'		=> ($this->encrypt === TRUE) ? 1 : 0,
+			'ReturnDatesAsStrings'	=> 1
+		);
+
+		// If the username and password are both empty, assume this is a
+		// 'Windows Authentication Mode' connection.
+		if (empty($connection['UID']) && empty($connection['PWD']))
+		{
+			unset($connection['UID'], $connection['PWD']);
+		}
+
+		if (FALSE !== ($this->conn_id = sqlsrv_connect($this->hostname, $connection)))
+		{
+			// Determine how identifiers are escaped
+			$query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
+			$query = $query->row_array();
+			$this->_quoted_identifier = empty($query) ? FALSE : (bool) $query['qi'];
+			$this->_escape_char = ($this->_quoted_identifier) ? '"' : array('[', ']');
+		}
+
+		return $this->conn_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @param	string	$database
+	 * @return	bool
+	 */
+	public function db_select($database = '')
+	{
+		if ($database === '')
+		{
+			$database = $this->database;
+		}
+
+		if ($this->_execute('USE '.$this->escape_identifiers($database)))
+		{
+			$this->database = $database;
+			$this->data_cache = array();
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		return ($this->scrollable === FALSE OR $this->is_write_type($sql))
+			? sqlsrv_query($this->conn_id, $sql)
+			: sqlsrv_query($this->conn_id, $sql, NULL, array('Scrollable' => $this->scrollable));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		return sqlsrv_begin_transaction($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		return sqlsrv_commit($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		return sqlsrv_rollback($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return sqlsrv_rows_affected($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * Returns the last id created in the Identity column.
+	 *
+	 * @return	string
+	 */
+	public function insert_id()
+	{
+		return $this->query('SELECT SCOPE_IDENTITY() AS insert_id')->row()->insert_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if ( ! $this->conn_id OR ($info = sqlsrv_server_info($this->conn_id)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		return $this->data_cache['version'] = $info['SQLServerVersion'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool
+	 * @return	string	$prefix_limit
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT '.$this->escape_identifiers('name')
+			.' FROM '.$this->escape_identifiers('sysobjects')
+			.' WHERE '.$this->escape_identifiers('type')." = 'U'";
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			$sql .= ' AND '.$this->escape_identifiers('name')." LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_escape_like_str, $this->_escape_like_chr);
+		}
+
+		return $sql.' ORDER BY '.$this->escape_identifiers('name');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT COLUMN_NAME
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, COLUMN_DEFAULT
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->COLUMN_NAME;
+			$retval[$i]->type		= $query[$i]->DATA_TYPE;
+			$retval[$i]->max_length		= ($query[$i]->CHARACTER_MAXIMUM_LENGTH > 0) ? $query[$i]->CHARACTER_MAXIMUM_LENGTH : $query[$i]->NUMERIC_PRECISION;
+			$retval[$i]->default		= $query[$i]->COLUMN_DEFAULT;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		$error = array('code' => '00000', 'message' => '');
+		$sqlsrv_errors = sqlsrv_errors(SQLSRV_ERR_ERRORS);
+
+		if ( ! is_array($sqlsrv_errors))
+		{
+			return $error;
+		}
+
+		$sqlsrv_error = array_shift($sqlsrv_errors);
+		if (isset($sqlsrv_error['SQLSTATE']))
+		{
+			$error['code'] = isset($sqlsrv_error['code']) ? $sqlsrv_error['SQLSTATE'].'/'.$sqlsrv_error['code'] : $sqlsrv_error['SQLSTATE'];
+		}
+		elseif (isset($sqlsrv_error['code']))
+		{
+			$error['code'] = $sqlsrv_error['code'];
+		}
+
+		if (isset($sqlsrv_error['message']))
+		{
+			$error['message'] = $sqlsrv_error['message'];
+		}
+
+		return $error;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE TABLE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		if ($this->qb_limit)
+		{
+			return 'WITH ci_delete AS (SELECT TOP '.$this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
+		}
+
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		// As of SQL Server 2012 (11.0.*) OFFSET is supported
+		if (version_compare($this->version(), '11', '>='))
+		{
+			// SQL Server OFFSET-FETCH can be used only with the ORDER BY clause
+			empty($this->qb_orderby) && $sql .= ' ORDER BY 1';
+
+			return $sql.' OFFSET '.(int) $this->qb_offset.' ROWS FETCH NEXT '.$this->qb_limit.' ROWS ONLY';
+		}
+
+		$limit = $this->qb_offset + $this->qb_limit;
+
+		// An ORDER BY clause is required for ROW_NUMBER() to work
+		if ($this->qb_offset && ! empty($this->qb_orderby))
+		{
+			$orderby = $this->_compile_order_by();
+
+			// We have to strip the ORDER BY clause
+			$sql = trim(substr($sql, 0, strrpos($sql, $orderby)));
+
+			// Get the fields to select from our subquery, so that we can avoid CI_rownum appearing in the actual results
+			if (count($this->qb_select) === 0 OR strpos(implode(',', $this->qb_select), '*') !== FALSE)
+			{
+				$select = '*'; // Inevitable
+			}
+			else
+			{
+				// Use only field names and their aliases, everything else is out of our scope.
+				$select = array();
+				$field_regexp = ($this->_quoted_identifier)
+					? '("[^\"]+")' : '(\[[^\]]+\])';
+				for ($i = 0, $c = count($this->qb_select); $i < $c; $i++)
+				{
+					$select[] = preg_match('/(?:\s|\.)'.$field_regexp.'$/i', $this->qb_select[$i], $m)
+						? $m[1] : $this->qb_select[$i];
+				}
+				$select = implode(', ', $select);
+			}
+
+			return 'SELECT '.$select." FROM (\n\n"
+				.preg_replace('/^(SELECT( DISTINCT)?)/i', '\\1 ROW_NUMBER() OVER('.trim($orderby).') AS '.$this->escape_identifiers('CI_rownum').', ', $sql)
+				."\n\n) ".$this->escape_identifiers('CI_subquery')
+				."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.($this->qb_offset + 1).' AND '.$limit;
+		}
+
+		return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		// Multiple-value inserts are only supported as of SQL Server 2008
+		if (version_compare($this->version(), '10', '>='))
+		{
+			return parent::_insert_batch($table, $keys, $values);
+		}
+
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		sqlsrv_close($this->conn_id);
+	}
+
+}
diff --git a/system/database/drivers/sqlsrv/sqlsrv_forge.php b/system/database/drivers/sqlsrv/sqlsrv_forge.php
new file mode 100644
index 00000000..610d2e42
--- /dev/null
+++ b/system/database/drivers/sqlsrv/sqlsrv_forge.php
@@ -0,0 +1,149 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.3
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLSRV Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlsrv_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= "IF NOT EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nCREATE TABLE";
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= "IF EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nDROP TABLE";
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT'	=> 'SMALLINT',
+		'SMALLINT'	=> 'INT',
+		'INT'		=> 'BIGINT',
+		'REAL'		=> 'FLOAT'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('ADD', 'DROP'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table).' ALTER COLUMN ';
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			$sqls[] = $sql.$this->_process_column($field[$i]);
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		if (isset($attributes['CONSTRAINT']) && strpos($attributes['TYPE'], 'INT') !== FALSE)
+		{
+			unset($attributes['CONSTRAINT']);
+		}
+
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INTEGER':
+				$attributes['TYPE'] = 'INT';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['auto_increment'] = ' IDENTITY(1,1)';
+		}
+	}
+
+}
diff --git a/system/database/drivers/sqlsrv/sqlsrv_result.php b/system/database/drivers/sqlsrv/sqlsrv_result.php
new file mode 100644
index 00000000..bf588442
--- /dev/null
+++ b/system/database/drivers/sqlsrv/sqlsrv_result.php
@@ -0,0 +1,193 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.3
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLSRV Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlsrv_result extends CI_DB_result {
+
+	/**
+	 * Scrollable flag
+	 *
+	 * @var	mixed
+	 */
+	public $scrollable;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	object	$driver_object
+	 * @return	void
+	 */
+	public function __construct(&$driver_object)
+	{
+		parent::__construct($driver_object);
+
+		$this->scrollable = $driver_object->scrollable;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		// sqlsrv_num_rows() doesn't work with the FORWARD and DYNAMIC cursors (FALSE is the same as FORWARD)
+		if ( ! in_array($this->scrollable, array(FALSE, SQLSRV_CURSOR_FORWARD, SQLSRV_CURSOR_DYNAMIC), TRUE))
+		{
+			return parent::num_rows();
+		}
+
+		return is_int($this->num_rows)
+			? $this->num_rows
+			: $this->num_rows = sqlsrv_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return @sqlsrv_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		foreach (sqlsrv_field_metadata($this->result_id) as $offset => $field)
+		{
+			$field_names[] = $field['Name'];
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		foreach (sqlsrv_field_metadata($this->result_id) as $i => $field)
+		{
+			$retval[$i]		= new stdClass();
+			$retval[$i]->name	= $field['Name'];
+			$retval[$i]->type	= $field['Type'];
+			$retval[$i]->max_length	= $field['Size'];
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id))
+		{
+			sqlsrv_free_stmt($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return sqlsrv_fetch_array($this->result_id, SQLSRV_FETCH_ASSOC);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return sqlsrv_fetch_object($this->result_id, $class_name);
+	}
+
+}
diff --git a/system/database/drivers/sqlsrv/sqlsrv_utility.php b/system/database/drivers/sqlsrv/sqlsrv_utility.php
new file mode 100644
index 00000000..bb2a6780
--- /dev/null
+++ b/system/database/drivers/sqlsrv/sqlsrv_utility.php
@@ -0,0 +1,77 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.3
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLSRV Utility Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlsrv_utility extends CI_DB_utility {
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases	= 'EXEC sp_helpdb'; // Can also be: EXEC sp_databases
+
+	/**
+	 * OPTIMIZE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_optimize_table	= 'ALTER INDEX all ON %s REORGANIZE';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	bool
+	 */
+	protected function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+
+}
diff --git a/system/database/index.html b/system/database/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/fonts/index.html b/system/fonts/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/fonts/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/fonts/texb.ttf b/system/fonts/texb.ttf
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z$z)m{XmD1bm`r!e)j=tHHlm?MRyTIT{tQj%$A`9z4DHLk%ik#Pl>9S2%DGV<sFKOX
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literal 0
HcmV?d00001

diff --git a/system/helpers/array_helper.php b/system/helpers/array_helper.php
new file mode 100644
index 00000000..2c359240
--- /dev/null
+++ b/system/helpers/array_helper.php
@@ -0,0 +1,115 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Array Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/array_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('element'))
+{
+	/**
+	 * Element
+	 *
+	 * Lets you determine whether an array index is set and whether it has a value.
+	 * If the element is empty it returns NULL (or whatever you specify as the default value.)
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	mixed
+	 * @return	mixed	depends on what the array contains
+	 */
+	function element($item, array $array, $default = NULL)
+	{
+		return array_key_exists($item, $array) ? $array[$item] : $default;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('random_element'))
+{
+	/**
+	 * Random Element - Takes an array as input and returns a random element
+	 *
+	 * @param	array
+	 * @return	mixed	depends on what the array contains
+	 */
+	function random_element($array)
+	{
+		return is_array($array) ? $array[array_rand($array)] : $array;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('elements'))
+{
+	/**
+	 * Elements
+	 *
+	 * Returns only the array items specified. Will return a default value if
+	 * it is not set.
+	 *
+	 * @param	array
+	 * @param	array
+	 * @param	mixed
+	 * @return	mixed	depends on what the array contains
+	 */
+	function elements($items, array $array, $default = NULL)
+	{
+		$return = array();
+
+		is_array($items) OR $items = array($items);
+
+		foreach ($items as $item)
+		{
+			$return[$item] = array_key_exists($item, $array) ? $array[$item] : $default;
+		}
+
+		return $return;
+	}
+}
diff --git a/system/helpers/captcha_helper.php b/system/helpers/captcha_helper.php
new file mode 100644
index 00000000..6fce0526
--- /dev/null
+++ b/system/helpers/captcha_helper.php
@@ -0,0 +1,384 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter CAPTCHA Helper
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/captcha_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('create_captcha'))
+{
+	/**
+	 * Create CAPTCHA
+	 *
+	 * @param	array	$data		Data for the CAPTCHA
+	 * @param	string	$img_path	Path to create the image in (deprecated)
+	 * @param	string	$img_url	URL to the CAPTCHA image folder (deprecated)
+	 * @param	string	$font_path	Server path to font (deprecated)
+	 * @return	string
+	 */
+	function create_captcha($data = '', $img_path = '', $img_url = '', $font_path = '')
+	{
+		$defaults = array(
+			'word'		=> '',
+			'img_path'	=> '',
+			'img_url'	=> '',
+			'img_width'	=> '150',
+			'img_height'	=> '30',
+			'img_alt'	=> 'captcha',
+			'img_class'	=> '',
+			'font_path'	=> '',
+			'font_size'	=> 16,
+			'expiration'	=> 7200,
+			'word_length'	=> 8,
+			'img_id'	=> '',
+			'pool'		=> '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
+			'colors'	=> array(
+				'background'	=> array(255,255,255),
+				'border'	=> array(153,102,102),
+				'text'		=> array(204,153,153),
+				'grid'		=> array(255,182,182)
+			)
+		);
+
+		$now = microtime(TRUE);
+
+		foreach ($defaults as $key => $val)
+		{
+			if ( ! is_array($data) && empty($$key))
+			{
+				$$key = $val;
+			}
+			else
+			{
+				$$key = isset($data[$key]) ? $data[$key] : $val;
+			}
+		}
+
+		if ( ! extension_loaded('gd'))
+		{
+			log_message('error', 'create_captcha(): GD extension is not loaded.');
+			return FALSE;
+		}
+
+		if ($img_path === '' OR $img_url === '')
+		{
+			log_message('error', 'create_captcha(): $img_path and $img_url are required.');
+			return FALSE;
+		}
+
+		if ( ! is_dir($img_path) OR ! is_really_writable($img_path))
+		{
+			log_message('error', "create_captcha(): '{$img_path}' is not a dir, nor is it writable.");
+			return FALSE;
+		}
+
+		if ($img_url !== '' OR $img_path !== '')
+		{
+			if ($img_path === '' OR $img_url === '')
+			{
+				log_message('error', 'create_captcha(): $img_path and $img_url are required.');
+				return FALSE;
+			}
+
+			if ( ! is_dir($img_path) OR ! is_really_writable($img_path))
+			{
+				log_message('error', "create_captcha(): '{$img_path}' is not a dir, nor is it writable.");
+				return FALSE;
+			}
+
+			/**
+			 * Remove old images
+			 */
+			$current_dir = @opendir($img_path);
+			while ($filename = @readdir($current_dir))
+			{
+				if (preg_match('#^(?<ts>\d{10})\.png$#', $filename, $match) && ($match['ts'] + $expiration) < $now)
+				{
+					@unlink($img_path.$filename);
+				}
+			}
+
+			@closedir($current_dir);
+
+			// This variable will later be used later to determine whether we write to disk or output a data:image URI
+			$img_filename = $now.'.png';
+		}
+		else
+		{
+			$img_filename = NULL;
+		}
+
+		// -----------------------------------
+		// Do we have a "word" yet?
+		// -----------------------------------
+
+		if (empty($word))
+		{
+			$word = '';
+			$pool_length = strlen($pool);
+			$rand_max = $pool_length - 1;
+
+			// PHP7 or a suitable polyfill
+			if (function_exists('random_int'))
+			{
+				try
+				{
+					for ($i = 0; $i < $word_length; $i++)
+					{
+						$word .= $pool[random_int(0, $rand_max)];
+					}
+				}
+				catch (Exception $e)
+				{
+					// This means fallback to the next possible
+					// alternative to random_int()
+					$word = '';
+				}
+			}
+		}
+
+		if (empty($word))
+		{
+			// Nobody will have a larger character pool than
+			// 256 characters, but let's handle it just in case ...
+			//
+			// No, I do not care that the fallback to mt_rand() can
+			// handle it; if you trigger this, you're very obviously
+			// trying to break it. -- Narf
+			if ($pool_length > 256)
+			{
+				return FALSE;
+			}
+
+			// We'll try using the operating system's PRNG first,
+			// which we can access through CI_Security::get_random_bytes()
+			$security = get_instance()->security;
+
+			// To avoid numerous get_random_bytes() calls, we'll
+			// just try fetching as much bytes as we need at once.
+			if (($bytes = $security->get_random_bytes($pool_length)) !== FALSE)
+			{
+				$byte_index = $word_index = 0;
+				while ($word_index < $word_length)
+				{
+					// Do we have more random data to use?
+					// It could be exhausted by previous iterations
+					// ignoring bytes higher than $rand_max.
+					if ($byte_index === $pool_length)
+					{
+						// No failures should be possible if the
+						// first get_random_bytes() call didn't
+						// return FALSE, but still ...
+						for ($i = 0; $i < 5; $i++)
+						{
+							if (($bytes = $security->get_random_bytes($pool_length)) === FALSE)
+							{
+								continue;
+							}
+
+							$byte_index = 0;
+							break;
+						}
+
+						if ($bytes === FALSE)
+						{
+							// Sadly, this means fallback to mt_rand()
+							$word = '';
+							break;
+						}
+					}
+
+					list(, $rand_index) = unpack('C', $bytes[$byte_index++]);
+					if ($rand_index > $rand_max)
+					{
+						continue;
+					}
+
+					$word .= $pool[$rand_index];
+					$word_index++;
+				}
+			}
+		}
+
+		if (empty($word))
+		{
+			for ($i = 0; $i < $word_length; $i++)
+			{
+				$word .= $pool[mt_rand(0, $rand_max)];
+			}
+		}
+		elseif ( ! is_string($word))
+		{
+			$word = (string) $word;
+		}
+
+		// -----------------------------------
+		// Determine angle and position
+		// -----------------------------------
+		$length	= strlen($word);
+		$angle	= ($length >= 6) ? mt_rand(-($length - 6), ($length - 6)) : 0;
+		$x_axis	= mt_rand(6, (360 / $length)-16);
+		$y_axis = ($angle >= 0) ? mt_rand($img_height, $img_width) : mt_rand(6, $img_height);
+
+		// Create image
+		// PHP.net recommends imagecreatetruecolor(), but it isn't always available
+		$im = function_exists('imagecreatetruecolor')
+			? imagecreatetruecolor($img_width, $img_height)
+			: imagecreate($img_width, $img_height);
+
+		// -----------------------------------
+		//  Assign colors
+		// ----------------------------------
+
+		is_array($colors) OR $colors = $defaults['colors'];
+
+		foreach (array_keys($defaults['colors']) as $key)
+		{
+			// Check for a possible missing value
+			is_array($colors[$key]) OR $colors[$key] = $defaults['colors'][$key];
+			$colors[$key] = imagecolorallocate($im, $colors[$key][0], $colors[$key][1], $colors[$key][2]);
+		}
+
+		// Create the rectangle
+		ImageFilledRectangle($im, 0, 0, $img_width, $img_height, $colors['background']);
+
+		// -----------------------------------
+		//  Create the spiral pattern
+		// -----------------------------------
+		$theta		= 1;
+		$thetac		= 7;
+		$radius		= 16;
+		$circles	= 20;
+		$points		= 32;
+
+		for ($i = 0, $cp = ($circles * $points) - 1; $i < $cp; $i++)
+		{
+			$theta += $thetac;
+			$rad = $radius * ($i / $points);
+			$x = ($rad * cos($theta)) + $x_axis;
+			$y = ($rad * sin($theta)) + $y_axis;
+			$theta += $thetac;
+			$rad1 = $radius * (($i + 1) / $points);
+			$x1 = ($rad1 * cos($theta)) + $x_axis;
+			$y1 = ($rad1 * sin($theta)) + $y_axis;
+			imageline($im, $x, $y, $x1, $y1, $colors['grid']);
+			$theta -= $thetac;
+		}
+
+		// -----------------------------------
+		//  Write the text
+		// -----------------------------------
+
+		$use_font = ($font_path !== '' && file_exists($font_path) && function_exists('imagettftext'));
+		if ($use_font === FALSE)
+		{
+			($font_size > 5) && $font_size = 5;
+			$x = mt_rand(0, $img_width / ($length / 3));
+			$y = 0;
+		}
+		else
+		{
+			($font_size > 30) && $font_size = 30;
+			$x = mt_rand(0, $img_width / ($length / 1.5));
+			$y = $font_size + 2;
+		}
+
+		for ($i = 0; $i < $length; $i++)
+		{
+			if ($use_font === FALSE)
+			{
+				$y = mt_rand(0 , $img_height / 2);
+				imagestring($im, $font_size, $x, $y, $word[$i], $colors['text']);
+				$x += ($font_size * 2);
+			}
+			else
+			{
+				$y = mt_rand($img_height / 2, $img_height - 3);
+				imagettftext($im, $font_size, $angle, $x, $y, $colors['text'], $font_path, $word[$i]);
+				$x += $font_size;
+			}
+		}
+
+		// Create the border
+		imagerectangle($im, 0, 0, $img_width - 1, $img_height - 1, $colors['border']);
+
+		// -----------------------------------
+		//  Generate the image
+		// -----------------------------------
+
+		if (isset($img_filename))
+		{
+			$img_src = rtrim($img_url, '/').'/'.$img_filename;
+			imagepng($im, $img_path.$img_filename);
+		}
+		else
+		{
+			// I don't see an easier way to get the image contents without writing to file
+			$buffer = fopen('php://memory', 'wb+');
+			imagepng($im, $buffer);
+			rewind($buffer);
+			$img_src = '';
+
+			// fread() will return an empty string (not FALSE) after the entire contents are read
+			while (strlen($read = fread($buffer, 4096)))
+			{
+				$img_src .= $read;
+			}
+
+			fclose($buffer);
+			$img_src = 'data:image/png;base64,'.base64_encode($img_src);
+		}
+
+		$img_class = trim($img_class);
+		$img_class = (bool) strlen($img_class) ? 'class="'.$img_class.'" ' : '';
+
+		$img = '<img '.($img_id === '' ? '' : 'id="'.$img_id.'"').' src="'.$img_src.'" style="width: '.$img_width.'px; height: '.$img_height .'px; border: 0;" '.$img_class.'alt="'.$img_alt.'" />';
+		ImageDestroy($im);
+
+		return array('word' => $word, 'time' => $now, 'image' => $img, 'filename' => $img_filename);
+	}
+}
diff --git a/system/helpers/cookie_helper.php b/system/helpers/cookie_helper.php
new file mode 100644
index 00000000..8183e054
--- /dev/null
+++ b/system/helpers/cookie_helper.php
@@ -0,0 +1,112 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Cookie Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/cookie_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_cookie'))
+{
+	/**
+	 * Set cookie
+	 *
+	 * Accepts seven parameters, or you can submit an associative
+	 * array in the first parameter containing all the values.
+	 *
+	 * @param	mixed
+	 * @param	string	the value of the cookie
+	 * @param	int	the number of seconds until expiration
+	 * @param	string	the cookie domain.  Usually:  .yourdomain.com
+	 * @param	string	the cookie path
+	 * @param	string	the cookie prefix
+	 * @param	bool	true makes the cookie secure
+	 * @param	bool	true makes the cookie accessible via http(s) only (no javascript)
+	 * @return	void
+	 */
+	function set_cookie($name, $value = '', $expire = 0, $domain = '', $path = '/', $prefix = '', $secure = NULL, $httponly = NULL)
+	{
+		// Set the config file options
+		get_instance()->input->set_cookie($name, $value, $expire, $domain, $path, $prefix, $secure, $httponly);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('get_cookie'))
+{
+	/**
+	 * Fetch an item from the COOKIE array
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	mixed
+	 */
+	function get_cookie($index, $xss_clean = FALSE)
+	{
+		$prefix = isset($_COOKIE[$index]) ? '' : config_item('cookie_prefix');
+		return get_instance()->input->cookie($prefix.$index, $xss_clean);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('delete_cookie'))
+{
+	/**
+	 * Delete a COOKIE
+	 *
+	 * @param	mixed
+	 * @param	string	the cookie domain. Usually: .yourdomain.com
+	 * @param	string	the cookie path
+	 * @param	string	the cookie prefix
+	 * @return	void
+	 */
+	function delete_cookie($name, $domain = '', $path = '/', $prefix = '')
+	{
+		set_cookie($name, '', '', $domain, $path, $prefix);
+	}
+}
diff --git a/system/helpers/date_helper.php b/system/helpers/date_helper.php
new file mode 100644
index 00000000..db9e9642
--- /dev/null
+++ b/system/helpers/date_helper.php
@@ -0,0 +1,702 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Date Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/date_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('now'))
+{
+	/**
+	 * Get "now" time
+	 *
+	 * Returns time() based on the timezone parameter or on the
+	 * "time_reference" setting
+	 *
+	 * @param	string
+	 * @return	int
+	 */
+	function now($timezone = NULL)
+	{
+		if (empty($timezone))
+		{
+			$timezone = config_item('time_reference');
+		}
+
+		if ($timezone === 'local' OR $timezone === date_default_timezone_get())
+		{
+			return time();
+		}
+
+		$datetime = new DateTime('now', new DateTimeZone($timezone));
+		sscanf($datetime->format('j-n-Y G:i:s'), '%d-%d-%d %d:%d:%d', $day, $month, $year, $hour, $minute, $second);
+
+		return mktime($hour, $minute, $second, $month, $day, $year);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('mdate'))
+{
+	/**
+	 * Convert MySQL Style Datecodes
+	 *
+	 * This function is identical to PHPs date() function,
+	 * except that it allows date codes to be formatted using
+	 * the MySQL style, where each code letter is preceded
+	 * with a percent sign:  %Y %m %d etc...
+	 *
+	 * The benefit of doing dates this way is that you don't
+	 * have to worry about escaping your text letters that
+	 * match the date codes.
+	 *
+	 * @param	string
+	 * @param	int
+	 * @return	int
+	 */
+	function mdate($datestr = '', $time = '')
+	{
+		if ($datestr === '')
+		{
+			return '';
+		}
+		elseif (empty($time))
+		{
+			$time = now();
+		}
+
+		$datestr = str_replace(
+			'%\\',
+			'',
+			preg_replace('/([a-z]+?){1}/i', '\\\\\\1', $datestr)
+		);
+
+		return date($datestr, $time);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('timespan'))
+{
+	/**
+	 * Timespan
+	 *
+	 * Returns a span of seconds in this format:
+	 *	10 days 14 hours 36 minutes 47 seconds
+	 *
+	 * @param	int	a number of seconds
+	 * @param	int	Unix timestamp
+	 * @param	int	a number of display units
+	 * @return	string
+	 */
+	function timespan($seconds = 1, $time = '', $units = 7)
+	{
+		$CI =& get_instance();
+		$CI->lang->load('date');
+
+		is_numeric($seconds) OR $seconds = 1;
+		is_numeric($time) OR $time = time();
+		is_numeric($units) OR $units = 7;
+
+		$seconds = ($time <= $seconds) ? 1 : $time - $seconds;
+
+		$str = array();
+		$years = floor($seconds / 31557600);
+
+		if ($years > 0)
+		{
+			$str[] = $years.' '.$CI->lang->line($years > 1 ? 'date_years' : 'date_year');
+		}
+
+		$seconds -= $years * 31557600;
+		$months = floor($seconds / 2629743);
+
+		if (count($str) < $units && ($years > 0 OR $months > 0))
+		{
+			if ($months > 0)
+			{
+				$str[] = $months.' '.$CI->lang->line($months > 1 ? 'date_months' : 'date_month');
+			}
+
+			$seconds -= $months * 2629743;
+		}
+
+		$weeks = floor($seconds / 604800);
+
+		if (count($str) < $units && ($years > 0 OR $months > 0 OR $weeks > 0))
+		{
+			if ($weeks > 0)
+			{
+				$str[] = $weeks.' '.$CI->lang->line($weeks > 1 ? 'date_weeks' : 'date_week');
+			}
+
+			$seconds -= $weeks * 604800;
+		}
+
+		$days = floor($seconds / 86400);
+
+		if (count($str) < $units && ($months > 0 OR $weeks > 0 OR $days > 0))
+		{
+			if ($days > 0)
+			{
+				$str[] = $days.' '.$CI->lang->line($days > 1 ? 'date_days' : 'date_day');
+			}
+
+			$seconds -= $days * 86400;
+		}
+
+		$hours = floor($seconds / 3600);
+
+		if (count($str) < $units && ($days > 0 OR $hours > 0))
+		{
+			if ($hours > 0)
+			{
+				$str[] = $hours.' '.$CI->lang->line($hours > 1 ? 'date_hours' : 'date_hour');
+			}
+
+			$seconds -= $hours * 3600;
+		}
+
+		$minutes = floor($seconds / 60);
+
+		if (count($str) < $units && ($days > 0 OR $hours > 0 OR $minutes > 0))
+		{
+			if ($minutes > 0)
+			{
+				$str[] = $minutes.' '.$CI->lang->line($minutes > 1 ? 'date_minutes' : 'date_minute');
+			}
+
+			$seconds -= $minutes * 60;
+		}
+
+		if (count($str) === 0)
+		{
+			$str[] = $seconds.' '.$CI->lang->line($seconds > 1 ? 'date_seconds' : 'date_second');
+		}
+
+		return implode(', ', $str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('days_in_month'))
+{
+	/**
+	 * Number of days in a month
+	 *
+	 * Takes a month/year as input and returns the number of days
+	 * for the given month/year. Takes leap years into consideration.
+	 *
+	 * @param	int	a numeric month
+	 * @param	int	a numeric year
+	 * @return	int
+	 */
+	function days_in_month($month = 0, $year = '')
+	{
+		if ($month < 1 OR $month > 12)
+		{
+			return 0;
+		}
+		elseif ( ! is_numeric($year) OR strlen($year) !== 4)
+		{
+			$year = date('Y');
+		}
+
+		if (defined('CAL_GREGORIAN'))
+		{
+			return cal_days_in_month(CAL_GREGORIAN, $month, $year);
+		}
+
+		if ($year >= 1970)
+		{
+			return (int) date('t', mktime(12, 0, 0, $month, 1, $year));
+		}
+
+		if ($month == 2)
+		{
+			if ($year % 400 === 0 OR ($year % 4 === 0 && $year % 100 !== 0))
+			{
+				return 29;
+			}
+		}
+
+		$days_in_month	= array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
+		return $days_in_month[$month - 1];
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('local_to_gmt'))
+{
+	/**
+	 * Converts a local Unix timestamp to GMT
+	 *
+	 * @param	int	Unix timestamp
+	 * @return	int
+	 */
+	function local_to_gmt($time = '')
+	{
+		if ($time === '')
+		{
+			$time = time();
+		}
+
+		return mktime(
+			gmdate('G', $time),
+			gmdate('i', $time),
+			gmdate('s', $time),
+			gmdate('n', $time),
+			gmdate('j', $time),
+			gmdate('Y', $time)
+		);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('gmt_to_local'))
+{
+	/**
+	 * Converts GMT time to a localized value
+	 *
+	 * Takes a Unix timestamp (in GMT) as input, and returns
+	 * at the local value based on the timezone and DST setting
+	 * submitted
+	 *
+	 * @param	int	Unix timestamp
+	 * @param	string	timezone
+	 * @param	bool	whether DST is active
+	 * @return	int
+	 */
+	function gmt_to_local($time = '', $timezone = 'UTC', $dst = FALSE)
+	{
+		if ($time === '')
+		{
+			return now();
+		}
+
+		$time += timezones($timezone) * 3600;
+
+		return ($dst === TRUE) ? $time + 3600 : $time;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('mysql_to_unix'))
+{
+	/**
+	 * Converts a MySQL Timestamp to Unix
+	 *
+	 * @param	int	MySQL timestamp YYYY-MM-DD HH:MM:SS
+	 * @return	int	Unix timstamp
+	 */
+	function mysql_to_unix($time = '')
+	{
+		// We'll remove certain characters for backward compatibility
+		// since the formatting changed with MySQL 4.1
+		// YYYY-MM-DD HH:MM:SS
+
+		$time = str_replace(array('-', ':', ' '), '', $time);
+
+		// YYYYMMDDHHMMSS
+		return mktime(
+			substr($time, 8, 2),
+			substr($time, 10, 2),
+			substr($time, 12, 2),
+			substr($time, 4, 2),
+			substr($time, 6, 2),
+			substr($time, 0, 4)
+		);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('unix_to_human'))
+{
+	/**
+	 * Unix to "Human"
+	 *
+	 * Formats Unix timestamp to the following prototype: 2006-08-21 11:35 PM
+	 *
+	 * @param	int	Unix timestamp
+	 * @param	bool	whether to show seconds
+	 * @param	string	format: us or euro
+	 * @return	string
+	 */
+	function unix_to_human($time = '', $seconds = FALSE, $fmt = 'us')
+	{
+		$r = date('Y', $time).'-'.date('m', $time).'-'.date('d', $time).' ';
+
+		if ($fmt === 'us')
+		{
+			$r .= date('h', $time).':'.date('i', $time);
+		}
+		else
+		{
+			$r .= date('H', $time).':'.date('i', $time);
+		}
+
+		if ($seconds)
+		{
+			$r .= ':'.date('s', $time);
+		}
+
+		if ($fmt === 'us')
+		{
+			return $r.' '.date('A', $time);
+		}
+
+		return $r;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('human_to_unix'))
+{
+	/**
+	 * Convert "human" date to GMT
+	 *
+	 * Reverses the above process
+	 *
+	 * @param	string	format: us or euro
+	 * @return	int
+	 */
+	function human_to_unix($datestr = '')
+	{
+		if ($datestr === '')
+		{
+			return FALSE;
+		}
+
+		$datestr = preg_replace('/\040+/', ' ', trim($datestr));
+
+		if ( ! preg_match('/^(\d{2}|\d{4})\-[0-9]{1,2}\-[0-9]{1,2}\s[0-9]{1,2}:[0-9]{1,2}(?::[0-9]{1,2})?(?:\s[AP]M)?$/i', $datestr))
+		{
+			return FALSE;
+		}
+
+		sscanf($datestr, '%d-%d-%d %s %s', $year, $month, $day, $time, $ampm);
+		sscanf($time, '%d:%d:%d', $hour, $min, $sec);
+		isset($sec) OR $sec = 0;
+
+		if (isset($ampm))
+		{
+			$ampm = strtolower($ampm);
+
+			if ($ampm[0] === 'p' && $hour < 12)
+			{
+				$hour += 12;
+			}
+			elseif ($ampm[0] === 'a' && $hour === 12)
+			{
+				$hour = 0;
+			}
+		}
+
+		return mktime($hour, $min, $sec, $month, $day, $year);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('nice_date'))
+{
+	/**
+	 * Turns many "reasonably-date-like" strings into something
+	 * that is actually useful. This only works for dates after unix epoch.
+	 *
+	 * @deprecated	3.1.3	Use DateTime::createFromFormat($input_format, $input)->format($output_format);
+	 * @param	string	The terribly formatted date-like string
+	 * @param	string	Date format to return (same as php date function)
+	 * @return	string
+	 */
+	function nice_date($bad_date = '', $format = FALSE)
+	{
+		if (empty($bad_date))
+		{
+			return 'Unknown';
+		}
+		elseif (empty($format))
+		{
+			$format = 'U';
+		}
+
+		// Date like: YYYYMM
+		if (preg_match('/^\d{6}$/i', $bad_date))
+		{
+			if (in_array(substr($bad_date, 0, 2), array('19', '20')))
+			{
+				$year  = substr($bad_date, 0, 4);
+				$month = substr($bad_date, 4, 2);
+			}
+			else
+			{
+				$month  = substr($bad_date, 0, 2);
+				$year   = substr($bad_date, 2, 4);
+			}
+
+			return date($format, strtotime($year.'-'.$month.'-01'));
+		}
+
+		// Date Like: YYYYMMDD
+		if (preg_match('/^\d{8}$/i', $bad_date, $matches))
+		{
+			return DateTime::createFromFormat('Ymd', $bad_date)->format($format);
+		}
+
+		// Date Like: MM-DD-YYYY __or__ M-D-YYYY (or anything in between)
+		if (preg_match('/^(\d{1,2})-(\d{1,2})-(\d{4})$/i', $bad_date, $matches))
+		{
+			return date($format, strtotime($matches[3].'-'.$matches[1].'-'.$matches[2]));
+		}
+
+		// Any other kind of string, when converted into UNIX time,
+		// produces "0 seconds after epoc..." is probably bad...
+		// return "Invalid Date".
+		if (date('U', strtotime($bad_date)) === '0')
+		{
+			return 'Invalid Date';
+		}
+
+		// It's probably a valid-ish date format already
+		return date($format, strtotime($bad_date));
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('timezone_menu'))
+{
+	/**
+	 * Timezone Menu
+	 *
+	 * Generates a drop-down menu of timezones.
+	 *
+	 * @param	string	timezone
+	 * @param	string	classname
+	 * @param	string	menu name
+	 * @param	mixed	attributes
+	 * @return	string
+	 */
+	function timezone_menu($default = 'UTC', $class = '', $name = 'timezones', $attributes = '')
+	{
+		$CI =& get_instance();
+		$CI->lang->load('date');
+
+		$default = ($default === 'GMT') ? 'UTC' : $default;
+
+		$menu = '<select name="'.$name.'"';
+
+		if ($class !== '')
+		{
+			$menu .= ' class="'.$class.'"';
+		}
+
+		$menu .= _stringify_attributes($attributes).">\n";
+
+		foreach (timezones() as $key => $val)
+		{
+			$selected = ($default === $key) ? ' selected="selected"' : '';
+			$menu .= '<option value="'.$key.'"'.$selected.'>'.$CI->lang->line($key)."</option>\n";
+		}
+
+		return $menu.'</select>';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('timezones'))
+{
+	/**
+	 * Timezones
+	 *
+	 * Returns an array of timezones. This is a helper function
+	 * for various other ones in this library
+	 *
+	 * @param	string	timezone
+	 * @return	string
+	 */
+	function timezones($tz = '')
+	{
+		// Note: Don't change the order of these even though
+		// some items appear to be in the wrong order
+
+		$zones = array(
+			'UM12'		=> -12,
+			'UM11'		=> -11,
+			'UM10'		=> -10,
+			'UM95'		=> -9.5,
+			'UM9'		=> -9,
+			'UM8'		=> -8,
+			'UM7'		=> -7,
+			'UM6'		=> -6,
+			'UM5'		=> -5,
+			'UM45'		=> -4.5,
+			'UM4'		=> -4,
+			'UM35'		=> -3.5,
+			'UM3'		=> -3,
+			'UM2'		=> -2,
+			'UM1'		=> -1,
+			'UTC'		=> 0,
+			'UP1'		=> +1,
+			'UP2'		=> +2,
+			'UP3'		=> +3,
+			'UP35'		=> +3.5,
+			'UP4'		=> +4,
+			'UP45'		=> +4.5,
+			'UP5'		=> +5,
+			'UP55'		=> +5.5,
+			'UP575'		=> +5.75,
+			'UP6'		=> +6,
+			'UP65'		=> +6.5,
+			'UP7'		=> +7,
+			'UP8'		=> +8,
+			'UP875'		=> +8.75,
+			'UP9'		=> +9,
+			'UP95'		=> +9.5,
+			'UP10'		=> +10,
+			'UP105'		=> +10.5,
+			'UP11'		=> +11,
+			'UP115'		=> +11.5,
+			'UP12'		=> +12,
+			'UP1275'	=> +12.75,
+			'UP13'		=> +13,
+			'UP14'		=> +14
+		);
+
+		if ($tz === '')
+		{
+			return $zones;
+		}
+
+		return isset($zones[$tz]) ? $zones[$tz] : 0;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('date_range'))
+{
+	/**
+	 * Date range
+	 *
+	 * Returns a list of dates within a specified period.
+	 *
+	 * @param	int	unix_start	UNIX timestamp of period start date
+	 * @param	int	unix_end|days	UNIX timestamp of period end date
+	 *					or interval in days.
+	 * @param	mixed	is_unix		Specifies whether the second parameter
+	 *					is a UNIX timestamp or a day interval
+	 *					 - TRUE or 'unix' for a timestamp
+	 *					 - FALSE or 'days' for an interval
+	 * @param	string  date_format	Output date format, same as in date()
+	 * @return	array
+	 */
+	function date_range($unix_start = '', $mixed = '', $is_unix = TRUE, $format = 'Y-m-d')
+	{
+		if ($unix_start == '' OR $mixed == '' OR $format == '')
+		{
+			return FALSE;
+		}
+
+		$is_unix = ! ( ! $is_unix OR $is_unix === 'days');
+
+		// Validate input and try strtotime() on invalid timestamps/intervals, just in case
+		if ( ( ! ctype_digit((string) $unix_start) && ($unix_start = @strtotime($unix_start)) === FALSE)
+			OR ( ! ctype_digit((string) $mixed) && ($is_unix === FALSE OR ($mixed = @strtotime($mixed)) === FALSE))
+			OR ($is_unix === TRUE && $mixed < $unix_start))
+		{
+			return FALSE;
+		}
+
+		if ($is_unix && ($unix_start == $mixed OR date($format, $unix_start) === date($format, $mixed)))
+		{
+			return array(date($format, $unix_start));
+		}
+
+		$range = array();
+
+		$from = new DateTime();
+		$from->setTimestamp($unix_start);
+
+		if ($is_unix)
+		{
+			$arg = new DateTime();
+			$arg->setTimestamp($mixed);
+		}
+		else
+		{
+			$arg = (int) $mixed;
+		}
+
+		$period = new DatePeriod($from, new DateInterval('P1D'), $arg);
+		foreach ($period as $date)
+		{
+			$range[] = $date->format($format);
+		}
+
+		/* If a period end date was passed to the DatePeriod constructor, it might not
+		 * be in our results. Not sure if this is a bug or it's just possible because
+		 * the end date might actually be less than 24 hours away from the previously
+		 * generated DateTime object, but either way - we have to append it manually.
+		 */
+		if ( ! is_int($arg) && $range[count($range) - 1] !== $arg->format($format))
+		{
+			$range[] = $arg->format($format);
+		}
+
+		return $range;
+	}
+}
diff --git a/system/helpers/directory_helper.php b/system/helpers/directory_helper.php
new file mode 100644
index 00000000..4732db57
--- /dev/null
+++ b/system/helpers/directory_helper.php
@@ -0,0 +1,101 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Directory Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/directory_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('directory_map'))
+{
+	/**
+	 * Create a Directory Map
+	 *
+	 * Reads the specified directory and builds an array
+	 * representation of it. Sub-folders contained with the
+	 * directory will be mapped as well.
+	 *
+	 * @param	string	$source_dir		Path to source
+	 * @param	int	$directory_depth	Depth of directories to traverse
+	 *						(0 = fully recursive, 1 = current dir, etc)
+	 * @param	bool	$hidden			Whether to show hidden files
+	 * @return	array
+	 */
+	function directory_map($source_dir, $directory_depth = 0, $hidden = FALSE)
+	{
+		if ($fp = @opendir($source_dir))
+		{
+			$filedata	= array();
+			$new_depth	= $directory_depth - 1;
+			$source_dir	= rtrim($source_dir, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;
+
+			while (FALSE !== ($file = readdir($fp)))
+			{
+				// Remove '.', '..', and hidden files [optional]
+				if ($file === '.' OR $file === '..' OR ($hidden === FALSE && $file[0] === '.'))
+				{
+					continue;
+				}
+
+				is_dir($source_dir.$file) && $file .= DIRECTORY_SEPARATOR;
+
+				if (($directory_depth < 1 OR $new_depth > 0) && is_dir($source_dir.$file))
+				{
+					$filedata[$file] = directory_map($source_dir.$file, $new_depth, $hidden);
+				}
+				else
+				{
+					$filedata[] = $file;
+				}
+			}
+
+			closedir($fp);
+			return $filedata;
+		}
+
+		return FALSE;
+	}
+}
diff --git a/system/helpers/download_helper.php b/system/helpers/download_helper.php
new file mode 100644
index 00000000..9bdeea13
--- /dev/null
+++ b/system/helpers/download_helper.php
@@ -0,0 +1,180 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Download Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/download_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('force_download'))
+{
+	/**
+	 * Force Download
+	 *
+	 * Generates headers that force a download to happen
+	 *
+	 * @param	mixed	filename (or an array of local file path => destination filename)
+	 * @param	mixed	the data to be downloaded
+	 * @param	bool	whether to try and send the actual file MIME type
+	 * @return	void
+	 */
+	function force_download($filename = '', $data = '', $set_mime = FALSE)
+	{
+		if ($filename === '' OR $data === '')
+		{
+			return;
+		}
+		elseif ($data === NULL)
+		{
+			// Is $filename an array as ['local source path' => 'destination filename']?
+			if (is_array($filename))
+			{
+				if (count($filename) !== 1)
+				{
+					return;
+				}
+
+				reset($filename);
+				$filepath = key($filename);
+				$filename = current($filename);
+
+				if (is_int($filepath))
+				{
+					return;
+				}
+			}
+			else
+			{
+				$filepath = $filename;
+				$filename = explode('/', str_replace(DIRECTORY_SEPARATOR, '/', $filename));
+				$filename = end($filename);
+			}
+
+			if ( ! @is_file($filepath) OR ($filesize = @filesize($filepath)) === FALSE)
+			{
+				return;
+			}
+		}
+		else
+		{
+			$filesize = strlen($data);
+		}
+
+		// Set the default MIME type to send
+		$mime = 'application/octet-stream';
+
+		$x = explode('.', $filename);
+		$extension = end($x);
+
+		if ($set_mime === TRUE)
+		{
+			if (count($x) === 1 OR $extension === '')
+			{
+				/* If we're going to detect the MIME type,
+				 * we'll need a file extension.
+				 */
+				return;
+			}
+
+			// Load the mime types
+			$mimes =& get_mimes();
+
+			// Only change the default MIME if we can find one
+			if (isset($mimes[$extension]))
+			{
+				$mime = is_array($mimes[$extension]) ? $mimes[$extension][0] : $mimes[$extension];
+			}
+		}
+
+		/* It was reported that browsers on Android 2.1 (and possibly older as well)
+		 * need to have the filename extension upper-cased in order to be able to
+		 * download it.
+		 *
+		 * Reference: http://digiblog.de/2011/04/19/android-and-the-download-file-headers/
+		 */
+		if (count($x) !== 1 && isset($_SERVER['HTTP_USER_AGENT']) && preg_match('/Android\s(1|2\.[01])/', $_SERVER['HTTP_USER_AGENT']))
+		{
+			$x[count($x) - 1] = strtoupper($extension);
+			$filename = implode('.', $x);
+		}
+
+		// Clean output buffer
+		if (ob_get_level() !== 0 && @ob_end_clean() === FALSE)
+		{
+			@ob_clean();
+		}
+
+		// RFC 6266 allows for multibyte filenames, but only in UTF-8,
+		// so we have to make it conditional ...
+		$charset = strtoupper(config_item('charset'));
+		$utf8_filename = ($charset !== 'UTF-8')
+			? get_instance()->utf8->convert_to_utf8($filename, $charset)
+			: $filename;
+		isset($utf8_filename[0]) && $utf8_filename = " filename*=UTF-8''".rawurlencode($utf8_filename);
+
+		// Generate the server headers
+		header('Content-Type: '.$mime);
+		header('Content-Disposition: attachment; filename="'.$filename.'";'.$utf8_filename);
+		header('Expires: 0');
+		header('Content-Transfer-Encoding: binary');
+		header('Content-Length: '.$filesize);
+		header('Cache-Control: private, no-transform, no-store, must-revalidate');
+
+		// If we have raw data - just dump it
+		if ($data !== NULL)
+		{
+			exit($data);
+		}
+
+		// Flush the file
+		if (@readfile($filepath) === FALSE)
+		{
+			return;
+		}
+
+		exit;
+	}
+}
diff --git a/system/helpers/file_helper.php b/system/helpers/file_helper.php
new file mode 100644
index 00000000..398d11af
--- /dev/null
+++ b/system/helpers/file_helper.php
@@ -0,0 +1,433 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter File Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/file_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('write_file'))
+{
+	/**
+	 * Write File
+	 *
+	 * Writes data to the file specified in the path.
+	 * Creates a new file if non-existent.
+	 *
+	 * @param	string	$path	File path
+	 * @param	string	$data	Data to write
+	 * @param	string	$mode	fopen() mode (default: 'wb')
+	 * @return	bool
+	 */
+	function write_file($path, $data, $mode = 'wb')
+	{
+		if ( ! $fp = @fopen($path, $mode))
+		{
+			return FALSE;
+		}
+
+		flock($fp, LOCK_EX);
+
+		for ($result = $written = 0, $length = strlen($data); $written < $length; $written += $result)
+		{
+			if (($result = fwrite($fp, substr($data, $written))) === FALSE)
+			{
+				break;
+			}
+		}
+
+		flock($fp, LOCK_UN);
+		fclose($fp);
+
+		return is_int($result);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('delete_files'))
+{
+	/**
+	 * Delete Files
+	 *
+	 * Deletes all files contained in the supplied directory path.
+	 * Files must be writable or owned by the system in order to be deleted.
+	 * If the second parameter is set to TRUE, any directories contained
+	 * within the supplied base directory will be nuked as well.
+	 *
+	 * @param	string	$path		File path
+	 * @param	bool	$del_dir	Whether to delete any directories found in the path
+	 * @param	bool	$htdocs		Whether to skip deleting .htaccess and index page files
+	 * @param	int	$_level		Current directory depth level (default: 0; internal use only)
+	 * @return	bool
+	 */
+	function delete_files($path, $del_dir = FALSE, $htdocs = FALSE, $_level = 0)
+	{
+		// Trim the trailing slash
+		$path = rtrim($path, '/\\');
+
+		if ( ! $current_dir = @opendir($path))
+		{
+			return FALSE;
+		}
+
+		while (FALSE !== ($filename = @readdir($current_dir)))
+		{
+			if ($filename !== '.' && $filename !== '..')
+			{
+				$filepath = $path.DIRECTORY_SEPARATOR.$filename;
+
+				if (is_dir($filepath) && $filename[0] !== '.' && ! is_link($filepath))
+				{
+					delete_files($filepath, $del_dir, $htdocs, $_level + 1);
+				}
+				elseif ($htdocs !== TRUE OR ! preg_match('/^(\.htaccess|index\.(html|htm|php)|web\.config)$/i', $filename))
+				{
+					@unlink($filepath);
+				}
+			}
+		}
+
+		closedir($current_dir);
+
+		return ($del_dir === TRUE && $_level > 0)
+			? @rmdir($path)
+			: TRUE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('get_filenames'))
+{
+	/**
+	 * Get Filenames
+	 *
+	 * Reads the specified directory and builds an array containing the filenames.
+	 * Any sub-folders contained within the specified path are read as well.
+	 *
+	 * @param	string	path to source
+	 * @param	bool	whether to include the path as part of the filename
+	 * @param	bool	internal variable to determine recursion status - do not use in calls
+	 * @return	array
+	 */
+	function get_filenames($source_dir, $include_path = FALSE, $_recursion = FALSE)
+	{
+		static $_filedata = array();
+
+		if ($fp = @opendir($source_dir))
+		{
+			// reset the array and make sure $source_dir has a trailing slash on the initial call
+			if ($_recursion === FALSE)
+			{
+				$_filedata = array();
+				$source_dir = rtrim(realpath($source_dir), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;
+			}
+
+			while (FALSE !== ($file = readdir($fp)))
+			{
+				if (is_dir($source_dir.$file) && $file[0] !== '.')
+				{
+					get_filenames($source_dir.$file.DIRECTORY_SEPARATOR, $include_path, TRUE);
+				}
+				elseif ($file[0] !== '.')
+				{
+					$_filedata[] = ($include_path === TRUE) ? $source_dir.$file : $file;
+				}
+			}
+
+			closedir($fp);
+			return $_filedata;
+		}
+
+		return FALSE;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('get_dir_file_info'))
+{
+	/**
+	 * Get Directory File Information
+	 *
+	 * Reads the specified directory and builds an array containing the filenames,
+	 * filesize, dates, and permissions
+	 *
+	 * Any sub-folders contained within the specified path are read as well.
+	 *
+	 * @param	string	path to source
+	 * @param	bool	Look only at the top level directory specified?
+	 * @param	bool	internal variable to determine recursion status - do not use in calls
+	 * @return	array
+	 */
+	function get_dir_file_info($source_dir, $top_level_only = TRUE, $_recursion = FALSE)
+	{
+		static $_filedata = array();
+		$relative_path = $source_dir;
+
+		if ($fp = @opendir($source_dir))
+		{
+			// reset the array and make sure $source_dir has a trailing slash on the initial call
+			if ($_recursion === FALSE)
+			{
+				$_filedata = array();
+				$source_dir = rtrim(realpath($source_dir), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;
+			}
+
+			// Used to be foreach (scandir($source_dir, 1) as $file), but scandir() is simply not as fast
+			while (FALSE !== ($file = readdir($fp)))
+			{
+				if (is_dir($source_dir.$file) && $file[0] !== '.' && $top_level_only === FALSE)
+				{
+					get_dir_file_info($source_dir.$file.DIRECTORY_SEPARATOR, $top_level_only, TRUE);
+				}
+				elseif ($file[0] !== '.')
+				{
+					$_filedata[$file] = get_file_info($source_dir.$file);
+					$_filedata[$file]['relative_path'] = $relative_path;
+				}
+			}
+
+			closedir($fp);
+			return $_filedata;
+		}
+
+		return FALSE;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('get_file_info'))
+{
+	/**
+	 * Get File Info
+	 *
+	 * Given a file and path, returns the name, path, size, date modified
+	 * Second parameter allows you to explicitly declare what information you want returned
+	 * Options are: name, server_path, size, date, readable, writable, executable, fileperms
+	 * Returns FALSE if the file cannot be found.
+	 *
+	 * @param	string	path to file
+	 * @param	mixed	array or comma separated string of information returned
+	 * @return	array
+	 */
+	function get_file_info($file, $returned_values = array('name', 'server_path', 'size', 'date'))
+	{
+		if ( ! file_exists($file))
+		{
+			return FALSE;
+		}
+
+		if (is_string($returned_values))
+		{
+			$returned_values = explode(',', $returned_values);
+		}
+
+		foreach ($returned_values as $key)
+		{
+			switch ($key)
+			{
+				case 'name':
+					$fileinfo['name'] = basename($file);
+					break;
+				case 'server_path':
+					$fileinfo['server_path'] = $file;
+					break;
+				case 'size':
+					$fileinfo['size'] = filesize($file);
+					break;
+				case 'date':
+					$fileinfo['date'] = filemtime($file);
+					break;
+				case 'readable':
+					$fileinfo['readable'] = is_readable($file);
+					break;
+				case 'writable':
+					$fileinfo['writable'] = is_really_writable($file);
+					break;
+				case 'executable':
+					$fileinfo['executable'] = is_executable($file);
+					break;
+				case 'fileperms':
+					$fileinfo['fileperms'] = fileperms($file);
+					break;
+			}
+		}
+
+		return $fileinfo;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('get_mime_by_extension'))
+{
+	/**
+	 * Get Mime by Extension
+	 *
+	 * Translates a file extension into a mime type based on config/mimes.php.
+	 * Returns FALSE if it can't determine the type, or open the mime config file
+	 *
+	 * Note: this is NOT an accurate way of determining file mime types, and is here strictly as a convenience
+	 * It should NOT be trusted, and should certainly NOT be used for security
+	 *
+	 * @param	string	$filename	File name
+	 * @return	string
+	 */
+	function get_mime_by_extension($filename)
+	{
+		static $mimes;
+
+		if ( ! is_array($mimes))
+		{
+			$mimes = get_mimes();
+
+			if (empty($mimes))
+			{
+				return FALSE;
+			}
+		}
+
+		$extension = strtolower(substr(strrchr($filename, '.'), 1));
+
+		if (isset($mimes[$extension]))
+		{
+			return is_array($mimes[$extension])
+				? current($mimes[$extension]) // Multiple mime types, just give the first one
+				: $mimes[$extension];
+		}
+
+		return FALSE;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('symbolic_permissions'))
+{
+	/**
+	 * Symbolic Permissions
+	 *
+	 * Takes a numeric value representing a file's permissions and returns
+	 * standard symbolic notation representing that value
+	 *
+	 * @param	int	$perms	Permissions
+	 * @return	string
+	 */
+	function symbolic_permissions($perms)
+	{
+		if (($perms & 0xC000) === 0xC000)
+		{
+			$symbolic = 's'; // Socket
+		}
+		elseif (($perms & 0xA000) === 0xA000)
+		{
+			$symbolic = 'l'; // Symbolic Link
+		}
+		elseif (($perms & 0x8000) === 0x8000)
+		{
+			$symbolic = '-'; // Regular
+		}
+		elseif (($perms & 0x6000) === 0x6000)
+		{
+			$symbolic = 'b'; // Block special
+		}
+		elseif (($perms & 0x4000) === 0x4000)
+		{
+			$symbolic = 'd'; // Directory
+		}
+		elseif (($perms & 0x2000) === 0x2000)
+		{
+			$symbolic = 'c'; // Character special
+		}
+		elseif (($perms & 0x1000) === 0x1000)
+		{
+			$symbolic = 'p'; // FIFO pipe
+		}
+		else
+		{
+			$symbolic = 'u'; // Unknown
+		}
+
+		// Owner
+		$symbolic .= (($perms & 0x0100) ? 'r' : '-')
+			.(($perms & 0x0080) ? 'w' : '-')
+			.(($perms & 0x0040) ? (($perms & 0x0800) ? 's' : 'x' ) : (($perms & 0x0800) ? 'S' : '-'));
+
+		// Group
+		$symbolic .= (($perms & 0x0020) ? 'r' : '-')
+			.(($perms & 0x0010) ? 'w' : '-')
+			.(($perms & 0x0008) ? (($perms & 0x0400) ? 's' : 'x' ) : (($perms & 0x0400) ? 'S' : '-'));
+
+		// World
+		$symbolic .= (($perms & 0x0004) ? 'r' : '-')
+			.(($perms & 0x0002) ? 'w' : '-')
+			.(($perms & 0x0001) ? (($perms & 0x0200) ? 't' : 'x' ) : (($perms & 0x0200) ? 'T' : '-'));
+
+		return $symbolic;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('octal_permissions'))
+{
+	/**
+	 * Octal Permissions
+	 *
+	 * Takes a numeric value representing a file's permissions and returns
+	 * a three character string representing the file's octal permissions
+	 *
+	 * @param	int	$perms	Permissions
+	 * @return	string
+	 */
+	function octal_permissions($perms)
+	{
+		return substr(sprintf('%o', $perms), -3);
+	}
+}
diff --git a/system/helpers/form_helper.php b/system/helpers/form_helper.php
new file mode 100644
index 00000000..4b88d3b1
--- /dev/null
+++ b/system/helpers/form_helper.php
@@ -0,0 +1,1035 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Form Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/form_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_open'))
+{
+	/**
+	 * Form Declaration
+	 *
+	 * Creates the opening portion of the form.
+	 *
+	 * @param	string	the URI segments of the form destination
+	 * @param	array	a key/value pair of attributes
+	 * @param	array	a key/value pair hidden data
+	 * @return	string
+	 */
+	function form_open($action = '', $attributes = array(), $hidden = array())
+	{
+		$CI =& get_instance();
+
+		// If no action is provided then set to the current url
+		if ( ! $action)
+		{
+			$action = $CI->config->site_url($CI->uri->uri_string());
+		}
+		// If an action is not a full URL then turn it into one
+		elseif (strpos($action, '://') === FALSE)
+		{
+			$action = $CI->config->site_url($action);
+		}
+
+		$attributes = _attributes_to_string($attributes);
+
+		if (stripos($attributes, 'method=') === FALSE)
+		{
+			$attributes .= ' method="post"';
+		}
+
+		if (stripos($attributes, 'accept-charset=') === FALSE)
+		{
+			$attributes .= ' accept-charset="'.strtolower(config_item('charset')).'"';
+		}
+
+		$form = '<form action="'.$action.'"'.$attributes.">\n";
+
+		if (is_array($hidden))
+		{
+			foreach ($hidden as $name => $value)
+			{
+				$form .= '<input type="hidden" name="'.$name.'" value="'.html_escape($value).'" />'."\n";
+			}
+		}
+
+		// Add CSRF field if enabled, but leave it out for GET requests and requests to external websites
+		if ($CI->config->item('csrf_protection') === TRUE && strpos($action, $CI->config->base_url()) !== FALSE && ! stripos($form, 'method="get"'))
+		{
+			// Prepend/append random-length "white noise" around the CSRF
+			// token input, as a form of protection against BREACH attacks
+			if (FALSE !== ($noise = $CI->security->get_random_bytes(1)))
+			{
+				list(, $noise) = unpack('c', $noise);
+			}
+			else
+			{
+				$noise = mt_rand(-128, 127);
+			}
+
+			// Prepend if $noise has a negative value, append if positive, do nothing for zero
+			$prepend = $append = '';
+			if ($noise < 0)
+			{
+				$prepend = str_repeat(" ", abs($noise));
+			}
+			elseif ($noise > 0)
+			{
+				$append  = str_repeat(" ", $noise);
+			}
+
+			$form .= sprintf(
+				'%s<input type="hidden" name="%s" value="%s" />%s%s',
+				$prepend,
+				$CI->security->get_csrf_token_name(),
+				$CI->security->get_csrf_hash(),
+				$append,
+				"\n"
+			);
+		}
+
+		return $form;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_open_multipart'))
+{
+	/**
+	 * Form Declaration - Multipart type
+	 *
+	 * Creates the opening portion of the form, but with "multipart/form-data".
+	 *
+	 * @param	string	the URI segments of the form destination
+	 * @param	array	a key/value pair of attributes
+	 * @param	array	a key/value pair hidden data
+	 * @return	string
+	 */
+	function form_open_multipart($action = '', $attributes = array(), $hidden = array())
+	{
+		if (is_string($attributes))
+		{
+			$attributes .= ' enctype="multipart/form-data"';
+		}
+		else
+		{
+			$attributes['enctype'] = 'multipart/form-data';
+		}
+
+		return form_open($action, $attributes, $hidden);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_hidden'))
+{
+	/**
+	 * Hidden Input Field
+	 *
+	 * Generates hidden fields. You can pass a simple key/value string or
+	 * an associative array with multiple values.
+	 *
+	 * @param	mixed	$name		Field name
+	 * @param	string	$value		Field value
+	 * @param	bool	$recursing
+	 * @return	string
+	 */
+	function form_hidden($name, $value = '', $recursing = FALSE)
+	{
+		static $form;
+
+		if ($recursing === FALSE)
+		{
+			$form = "\n";
+		}
+
+		if (is_array($name))
+		{
+			foreach ($name as $key => $val)
+			{
+				form_hidden($key, $val, TRUE);
+			}
+
+			return $form;
+		}
+
+		if ( ! is_array($value))
+		{
+			$form .= '<input type="hidden" name="'.$name.'" value="'.html_escape($value)."\" />\n";
+		}
+		else
+		{
+			foreach ($value as $k => $v)
+			{
+				$k = is_int($k) ? '' : $k;
+				form_hidden($name.'['.$k.']', $v, TRUE);
+			}
+		}
+
+		return $form;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_input'))
+{
+	/**
+	 * Text Input Field
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_input($data = '', $value = '', $extra = '')
+	{
+		$defaults = array(
+			'type' => 'text',
+			'name' => is_array($data) ? '' : $data,
+			'value' => $value
+		);
+
+		return '<input '._parse_form_attributes($data, $defaults)._attributes_to_string($extra)." />\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_password'))
+{
+	/**
+	 * Password Field
+	 *
+	 * Identical to the input function but adds the "password" type
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_password($data = '', $value = '', $extra = '')
+	{
+		is_array($data) OR $data = array('name' => $data);
+		$data['type'] = 'password';
+		return form_input($data, $value, $extra);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_upload'))
+{
+	/**
+	 * Upload Field
+	 *
+	 * Identical to the input function but adds the "file" type
+	 *
+	 * @param	mixed
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_upload($data = '', $extra = '')
+	{
+		$defaults = array('type' => 'file', 'name' => '');
+		is_array($data) OR $data = array('name' => $data);
+		$data['type'] = 'file';
+
+		return '<input '._parse_form_attributes($data, $defaults)._attributes_to_string($extra)." />\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_textarea'))
+{
+	/**
+	 * Textarea field
+	 *
+	 * @param	mixed	$data
+	 * @param	string	$value
+	 * @param	mixed	$extra
+	 * @return	string
+	 */
+	function form_textarea($data = '', $value = '', $extra = '')
+	{
+		$defaults = array(
+			'name' => is_array($data) ? '' : $data,
+			'cols' => '40',
+			'rows' => '10'
+		);
+
+		if ( ! is_array($data) OR ! isset($data['value']))
+		{
+			$val = $value;
+		}
+		else
+		{
+			$val = $data['value'];
+			unset($data['value']); // textareas don't use the value attribute
+		}
+
+		return '<textarea '._parse_form_attributes($data, $defaults)._attributes_to_string($extra).'>'
+			.html_escape($val)
+			."</textarea>\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_multiselect'))
+{
+	/**
+	 * Multi-select menu
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	mixed
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_multiselect($name = '', $options = array(), $selected = array(), $extra = '')
+	{
+		$extra = _attributes_to_string($extra);
+		if (stripos($extra, 'multiple') === FALSE)
+		{
+			$extra .= ' multiple="multiple"';
+		}
+
+		return form_dropdown($name, $options, $selected, $extra);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('form_dropdown'))
+{
+	/**
+	 * Drop-down Menu
+	 *
+	 * @param	mixed	$data
+	 * @param	mixed	$options
+	 * @param	mixed	$selected
+	 * @param	mixed	$extra
+	 * @return	string
+	 */
+	function form_dropdown($data = '', $options = array(), $selected = array(), $extra = '')
+	{
+		$defaults = array();
+
+		if (is_array($data))
+		{
+			if (isset($data['selected']))
+			{
+				$selected = $data['selected'];
+				unset($data['selected']); // select tags don't have a selected attribute
+			}
+
+			if (isset($data['options']))
+			{
+				$options = $data['options'];
+				unset($data['options']); // select tags don't use an options attribute
+			}
+		}
+		else
+		{
+			$defaults = array('name' => $data);
+		}
+
+		is_array($selected) OR $selected = array($selected);
+		is_array($options) OR $options = array($options);
+
+		// If no selected state was submitted we will attempt to set it automatically
+		if (empty($selected))
+		{
+			if (is_array($data))
+			{
+				if (isset($data['name'], $_POST[$data['name']]))
+				{
+					$selected = array($_POST[$data['name']]);
+				}
+			}
+			elseif (isset($_POST[$data]))
+			{
+				$selected = array($_POST[$data]);
+			}
+		}
+
+		$extra = _attributes_to_string($extra);
+
+		$multiple = (count($selected) > 1 && stripos($extra, 'multiple') === FALSE) ? ' multiple="multiple"' : '';
+
+		$form = '<select '.rtrim(_parse_form_attributes($data, $defaults)).$extra.$multiple.">\n";
+
+		foreach ($options as $key => $val)
+		{
+			$key = (string) $key;
+
+			if (is_array($val))
+			{
+				if (empty($val))
+				{
+					continue;
+				}
+
+				$form .= '<optgroup label="'.$key."\">\n";
+
+				foreach ($val as $optgroup_key => $optgroup_val)
+				{
+					$sel = in_array($optgroup_key, $selected) ? ' selected="selected"' : '';
+					$form .= '<option value="'.html_escape($optgroup_key).'"'.$sel.'>'
+						.(string) $optgroup_val."</option>\n";
+				}
+
+				$form .= "</optgroup>\n";
+			}
+			else
+			{
+				$form .= '<option value="'.html_escape($key).'"'
+					.(in_array($key, $selected) ? ' selected="selected"' : '').'>'
+					.(string) $val."</option>\n";
+			}
+		}
+
+		return $form."</select>\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_checkbox'))
+{
+	/**
+	 * Checkbox Field
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	bool
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_checkbox($data = '', $value = '', $checked = FALSE, $extra = '')
+	{
+		$defaults = array('type' => 'checkbox', 'name' => ( ! is_array($data) ? $data : ''), 'value' => $value);
+
+		if (is_array($data) && array_key_exists('checked', $data))
+		{
+			$checked = $data['checked'];
+
+			if ($checked == FALSE)
+			{
+				unset($data['checked']);
+			}
+			else
+			{
+				$data['checked'] = 'checked';
+			}
+		}
+
+		if ($checked == TRUE)
+		{
+			$defaults['checked'] = 'checked';
+		}
+		else
+		{
+			unset($defaults['checked']);
+		}
+
+		return '<input '._parse_form_attributes($data, $defaults)._attributes_to_string($extra)." />\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_radio'))
+{
+	/**
+	 * Radio Button
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	bool
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_radio($data = '', $value = '', $checked = FALSE, $extra = '')
+	{
+		is_array($data) OR $data = array('name' => $data);
+		$data['type'] = 'radio';
+
+		return form_checkbox($data, $value, $checked, $extra);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_submit'))
+{
+	/**
+	 * Submit Button
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_submit($data = '', $value = '', $extra = '')
+	{
+		$defaults = array(
+			'type' => 'submit',
+			'name' => is_array($data) ? '' : $data,
+			'value' => $value
+		);
+
+		return '<input '._parse_form_attributes($data, $defaults)._attributes_to_string($extra)." />\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_reset'))
+{
+	/**
+	 * Reset Button
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_reset($data = '', $value = '', $extra = '')
+	{
+		$defaults = array(
+			'type' => 'reset',
+			'name' => is_array($data) ? '' : $data,
+			'value' => $value
+		);
+
+		return '<input '._parse_form_attributes($data, $defaults)._attributes_to_string($extra)." />\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_button'))
+{
+	/**
+	 * Form Button
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_button($data = '', $content = '', $extra = '')
+	{
+		$defaults = array(
+			'name' => is_array($data) ? '' : $data,
+			'type' => 'button'
+		);
+
+		if (is_array($data) && isset($data['content']))
+		{
+			$content = $data['content'];
+			unset($data['content']); // content is not an attribute
+		}
+
+		return '<button '._parse_form_attributes($data, $defaults)._attributes_to_string($extra).'>'
+			.$content
+			."</button>\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_label'))
+{
+	/**
+	 * Form Label Tag
+	 *
+	 * @param	string	The text to appear onscreen
+	 * @param	string	The id the label applies to
+	 * @param	mixed	Additional attributes
+	 * @return	string
+	 */
+	function form_label($label_text = '', $id = '', $attributes = array())
+	{
+
+		$label = '<label';
+
+		if ($id !== '')
+		{
+			$label .= ' for="'.$id.'"';
+		}
+
+		$label .= _attributes_to_string($attributes);
+
+		return $label.'>'.$label_text.'</label>';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_fieldset'))
+{
+	/**
+	 * Fieldset Tag
+	 *
+	 * Used to produce <fieldset><legend>text</legend>.  To close fieldset
+	 * use form_fieldset_close()
+	 *
+	 * @param	string	The legend text
+	 * @param	array	Additional attributes
+	 * @return	string
+	 */
+	function form_fieldset($legend_text = '', $attributes = array())
+	{
+		$fieldset = '<fieldset'._attributes_to_string($attributes).">\n";
+		if ($legend_text !== '')
+		{
+			return $fieldset.'<legend>'.$legend_text."</legend>\n";
+		}
+
+		return $fieldset;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_fieldset_close'))
+{
+	/**
+	 * Fieldset Close Tag
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function form_fieldset_close($extra = '')
+	{
+		return '</fieldset>'.$extra;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_close'))
+{
+	/**
+	 * Form Close Tag
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function form_close($extra = '')
+	{
+		return '</form>'.$extra;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_value'))
+{
+	/**
+	 * Form Value
+	 *
+	 * Grabs a value from the POST array for the specified field so you can
+	 * re-populate an input field or textarea. If Form Validation
+	 * is active it retrieves the info from the validation class
+	 *
+	 * @param	string	$field		Field name
+	 * @param	string	$default	Default value
+	 * @param	bool	$html_escape	Whether to escape HTML special characters or not
+	 * @return	string
+	 */
+	function set_value($field, $default = '', $html_escape = TRUE)
+	{
+		$CI =& get_instance();
+
+		$value = (isset($CI->form_validation) && is_object($CI->form_validation) && $CI->form_validation->has_rule($field))
+			? $CI->form_validation->set_value($field, $default)
+			: $CI->input->post($field, FALSE);
+
+		isset($value) OR $value = $default;
+		return ($html_escape) ? html_escape($value) : $value;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_select'))
+{
+	/**
+	 * Set Select
+	 *
+	 * Let's you set the selected value of a <select> menu via data in the POST array.
+	 * If Form Validation is active it retrieves the info from the validation class
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	function set_select($field, $value = '', $default = FALSE)
+	{
+		$CI =& get_instance();
+
+		if (isset($CI->form_validation) && is_object($CI->form_validation) && $CI->form_validation->has_rule($field))
+		{
+			return $CI->form_validation->set_select($field, $value, $default);
+		}
+		elseif (($input = $CI->input->post($field, FALSE)) === NULL)
+		{
+			return ($default === TRUE) ? ' selected="selected"' : '';
+		}
+
+		$value = (string) $value;
+		if (is_array($input))
+		{
+			// Note: in_array('', array(0)) returns TRUE, do not use it
+			foreach ($input as &$v)
+			{
+				if ($value === $v)
+				{
+					return ' selected="selected"';
+				}
+			}
+
+			return '';
+		}
+
+		return ($input === $value) ? ' selected="selected"' : '';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_checkbox'))
+{
+	/**
+	 * Set Checkbox
+	 *
+	 * Let's you set the selected value of a checkbox via the value in the POST array.
+	 * If Form Validation is active it retrieves the info from the validation class
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	function set_checkbox($field, $value = '', $default = FALSE)
+	{
+		$CI =& get_instance();
+
+		if (isset($CI->form_validation) && is_object($CI->form_validation) && $CI->form_validation->has_rule($field))
+		{
+			return $CI->form_validation->set_checkbox($field, $value, $default);
+		}
+
+		// Form inputs are always strings ...
+		$value = (string) $value;
+		$input = $CI->input->post($field, FALSE);
+
+		if (is_array($input))
+		{
+			// Note: in_array('', array(0)) returns TRUE, do not use it
+			foreach ($input as &$v)
+			{
+				if ($value === $v)
+				{
+					return ' checked="checked"';
+				}
+			}
+
+			return '';
+		}
+
+		// Unchecked checkbox and radio inputs are not even submitted by browsers ...
+		if ($CI->input->method() === 'post')
+		{
+			return ($input === $value) ? ' checked="checked"' : '';
+		}
+
+		return ($default === TRUE) ? ' checked="checked"' : '';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_radio'))
+{
+	/**
+	 * Set Radio
+	 *
+	 * Let's you set the selected value of a radio field via info in the POST array.
+	 * If Form Validation is active it retrieves the info from the validation class
+	 *
+	 * @param	string	$field
+	 * @param	string	$value
+	 * @param	bool	$default
+	 * @return	string
+	 */
+	function set_radio($field, $value = '', $default = FALSE)
+	{
+		$CI =& get_instance();
+
+		if (isset($CI->form_validation) && is_object($CI->form_validation) && $CI->form_validation->has_rule($field))
+		{
+			return $CI->form_validation->set_radio($field, $value, $default);
+		}
+
+		// Form inputs are always strings ...
+		$value = (string) $value;
+		$input = $CI->input->post($field, FALSE);
+
+		if (is_array($input))
+		{
+			// Note: in_array('', array(0)) returns TRUE, do not use it
+			foreach ($input as &$v)
+			{
+				if ($value === $v)
+				{
+					return ' checked="checked"';
+				}
+			}
+
+			return '';
+		}
+
+		// Unchecked checkbox and radio inputs are not even submitted by browsers ...
+		if ($CI->input->method() === 'post')
+		{
+			return ($input === $value) ? ' checked="checked"' : '';
+		}
+
+		return ($default === TRUE) ? ' checked="checked"' : '';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_error'))
+{
+	/**
+	 * Form Error
+	 *
+	 * Returns the error for a specific form field. This is a helper for the
+	 * form validation class.
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	function form_error($field = '', $prefix = '', $suffix = '')
+	{
+		if (FALSE === ($OBJ =& _get_validation_object()))
+		{
+			return '';
+		}
+
+		return $OBJ->error($field, $prefix, $suffix);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('validation_errors'))
+{
+	/**
+	 * Validation Error String
+	 *
+	 * Returns all the errors associated with a form submission. This is a helper
+	 * function for the form validation class.
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	function validation_errors($prefix = '', $suffix = '')
+	{
+		if (FALSE === ($OBJ =& _get_validation_object()))
+		{
+			return '';
+		}
+
+		return $OBJ->error_string($prefix, $suffix);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_parse_form_attributes'))
+{
+	/**
+	 * Parse the form attributes
+	 *
+	 * Helper function used by some of the form helpers
+	 *
+	 * @param	array	$attributes	List of attributes
+	 * @param	array	$default	Default values
+	 * @return	string
+	 */
+	function _parse_form_attributes($attributes, $default)
+	{
+		if (is_array($attributes))
+		{
+			foreach ($default as $key => $val)
+			{
+				if (isset($attributes[$key]))
+				{
+					$default[$key] = $attributes[$key];
+					unset($attributes[$key]);
+				}
+			}
+
+			if (count($attributes) > 0)
+			{
+				$default = array_merge($default, $attributes);
+			}
+		}
+
+		$att = '';
+
+		foreach ($default as $key => $val)
+		{
+			if ($key === 'value')
+			{
+				$val = html_escape($val);
+			}
+			elseif ($key === 'name' && ! strlen($default['name']))
+			{
+				continue;
+			}
+
+			$att .= $key.'="'.$val.'" ';
+		}
+
+		return $att;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_attributes_to_string'))
+{
+	/**
+	 * Attributes To String
+	 *
+	 * Helper function used by some of the form helpers
+	 *
+	 * @param	mixed
+	 * @return	string
+	 */
+	function _attributes_to_string($attributes)
+	{
+		if (empty($attributes))
+		{
+			return '';
+		}
+
+		if (is_object($attributes))
+		{
+			$attributes = (array) $attributes;
+		}
+
+		if (is_array($attributes))
+		{
+			$atts = '';
+
+			foreach ($attributes as $key => $val)
+			{
+				$atts .= ' '.$key.'="'.$val.'"';
+			}
+
+			return $atts;
+		}
+
+		if (is_string($attributes))
+		{
+			return ' '.$attributes;
+		}
+
+		return FALSE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_get_validation_object'))
+{
+	/**
+	 * Validation Object
+	 *
+	 * Determines what the form validation class was instantiated as, fetches
+	 * the object and returns it.
+	 *
+	 * @return	mixed
+	 */
+	function &_get_validation_object()
+	{
+		$CI =& get_instance();
+
+		// We set this as a variable since we're returning by reference.
+		$return = FALSE;
+
+		if (FALSE !== ($object = $CI->load->is_loaded('Form_validation')))
+		{
+			if ( ! isset($CI->$object) OR ! is_object($CI->$object))
+			{
+				return $return;
+			}
+
+			return $CI->$object;
+		}
+
+		return $return;
+	}
+}
diff --git a/system/helpers/html_helper.php b/system/helpers/html_helper.php
new file mode 100644
index 00000000..531ae225
--- /dev/null
+++ b/system/helpers/html_helper.php
@@ -0,0 +1,391 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter HTML Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/html_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('heading'))
+{
+	/**
+	 * Heading
+	 *
+	 * Generates an HTML heading tag.
+	 *
+	 * @param	string	content
+	 * @param	int	heading level
+	 * @param	string
+	 * @return	string
+	 */
+	function heading($data = '', $h = '1', $attributes = '')
+	{
+		return '<h'.$h._stringify_attributes($attributes).'>'.$data.'</h'.$h.'>';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('ul'))
+{
+	/**
+	 * Unordered List
+	 *
+	 * Generates an HTML unordered list from an single or multi-dimensional array.
+	 *
+	 * @param	array
+	 * @param	mixed
+	 * @return	string
+	 */
+	function ul($list, $attributes = '')
+	{
+		return _list('ul', $list, $attributes);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('ol'))
+{
+	/**
+	 * Ordered List
+	 *
+	 * Generates an HTML ordered list from an single or multi-dimensional array.
+	 *
+	 * @param	array
+	 * @param	mixed
+	 * @return	string
+	 */
+	function ol($list, $attributes = '')
+	{
+		return _list('ol', $list, $attributes);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_list'))
+{
+	/**
+	 * Generates the list
+	 *
+	 * Generates an HTML ordered list from an single or multi-dimensional array.
+	 *
+	 * @param	string
+	 * @param	mixed
+	 * @param	mixed
+	 * @param	int
+	 * @return	string
+	 */
+	function _list($type = 'ul', $list = array(), $attributes = '', $depth = 0)
+	{
+		// If an array wasn't submitted there's nothing to do...
+		if ( ! is_array($list))
+		{
+			return $list;
+		}
+
+		// Set the indentation based on the depth
+		$out = str_repeat(' ', $depth)
+			// Write the opening list tag
+			.'<'.$type._stringify_attributes($attributes).">\n";
+
+
+		// Cycle through the list elements.  If an array is
+		// encountered we will recursively call _list()
+
+		static $_last_list_item = '';
+		foreach ($list as $key => $val)
+		{
+			$_last_list_item = $key;
+
+			$out .= str_repeat(' ', $depth + 2).'<li>';
+
+			if ( ! is_array($val))
+			{
+				$out .= $val;
+			}
+			else
+			{
+				$out .= $_last_list_item."\n"._list($type, $val, '', $depth + 4).str_repeat(' ', $depth + 2);
+			}
+
+			$out .= "</li>\n";
+		}
+
+		// Set the indentation for the closing tag and apply it
+		return $out.str_repeat(' ', $depth).'</'.$type.">\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('img'))
+{
+	/**
+	 * Image
+	 *
+	 * Generates an <img /> element
+	 *
+	 * @param	mixed
+	 * @param	bool
+	 * @param	mixed
+	 * @return	string
+	 */
+	function img($src = '', $index_page = FALSE, $attributes = '')
+	{
+		if ( ! is_array($src) )
+		{
+			$src = array('src' => $src);
+		}
+
+		// If there is no alt attribute defined, set it to an empty string
+		if ( ! isset($src['alt']))
+		{
+			$src['alt'] = '';
+		}
+
+		$img = '<img';
+
+		foreach ($src as $k => $v)
+		{
+			if ($k === 'src' && ! preg_match('#^(data:[a-z,;])|(([a-z]+:)?(?<!data:)//)#i', $v))
+			{
+				if ($index_page === TRUE)
+				{
+					$img .= ' src="'.get_instance()->config->site_url($v).'"';
+				}
+				else
+				{
+					$img .= ' src="'.get_instance()->config->base_url($v).'"';
+				}
+			}
+			else
+			{
+				$img .= ' '.$k.'="'.$v.'"';
+			}
+		}
+
+		return $img._stringify_attributes($attributes).' />';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('doctype'))
+{
+	/**
+	 * Doctype
+	 *
+	 * Generates a page document type declaration
+	 *
+	 * Examples of valid options: html5, xhtml-11, xhtml-strict, xhtml-trans,
+	 * xhtml-frame, html4-strict, html4-trans, and html4-frame.
+	 * All values are saved in the doctypes config file.
+	 *
+	 * @param	string	type	The doctype to be generated
+	 * @return	string
+	 */
+	function doctype($type = 'html5')
+	{
+		static $doctypes;
+
+		if ( ! is_array($doctypes))
+		{
+			if (file_exists(APPPATH.'config/doctypes.php'))
+			{
+				include(APPPATH.'config/doctypes.php');
+			}
+
+			if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/doctypes.php'))
+			{
+				include(APPPATH.'config/'.ENVIRONMENT.'/doctypes.php');
+			}
+
+			if (empty($_doctypes) OR ! is_array($_doctypes))
+			{
+				$doctypes = array();
+				return FALSE;
+			}
+
+			$doctypes = $_doctypes;
+		}
+
+		return isset($doctypes[$type]) ? $doctypes[$type] : FALSE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('link_tag'))
+{
+	/**
+	 * Link
+	 *
+	 * Generates link to a CSS file
+	 *
+	 * @param	mixed	stylesheet hrefs or an array
+	 * @param	string	rel
+	 * @param	string	type
+	 * @param	string	title
+	 * @param	string	media
+	 * @param	bool	should index_page be added to the css path
+	 * @return	string
+	 */
+	function link_tag($href = '', $rel = 'stylesheet', $type = 'text/css', $title = '', $media = '', $index_page = FALSE)
+	{
+		$CI =& get_instance();
+		$link = '<link ';
+
+		if (is_array($href))
+		{
+			foreach ($href as $k => $v)
+			{
+				if ($k === 'href' && ! preg_match('#^([a-z]+:)?//#i', $v))
+				{
+					if ($index_page === TRUE)
+					{
+						$link .= 'href="'.$CI->config->site_url($v).'" ';
+					}
+					else
+					{
+						$link .= 'href="'.$CI->config->base_url($v).'" ';
+					}
+				}
+				else
+				{
+					$link .= $k.'="'.$v.'" ';
+				}
+			}
+		}
+		else
+		{
+			if (preg_match('#^([a-z]+:)?//#i', $href))
+			{
+				$link .= 'href="'.$href.'" ';
+			}
+			elseif ($index_page === TRUE)
+			{
+				$link .= 'href="'.$CI->config->site_url($href).'" ';
+			}
+			else
+			{
+				$link .= 'href="'.$CI->config->base_url($href).'" ';
+			}
+
+			$link .= 'rel="'.$rel.'" type="'.$type.'" ';
+
+			if ($media !== '')
+			{
+				$link .= 'media="'.$media.'" ';
+			}
+
+			if ($title !== '')
+			{
+				$link .= 'title="'.$title.'" ';
+			}
+		}
+
+		return $link."/>\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('meta'))
+{
+	/**
+	 * Generates meta tags from an array of key/values
+	 *
+	 * @param	array
+	 * @param	string
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	function meta($name = '', $content = '', $type = 'name', $newline = "\n")
+	{
+		// Since we allow the data to be passes as a string, a simple array
+		// or a multidimensional one, we need to do a little prepping.
+		if ( ! is_array($name))
+		{
+			$name = array(array('name' => $name, 'content' => $content, 'type' => $type, 'newline' => $newline));
+		}
+		elseif (isset($name['name']))
+		{
+			// Turn single array into multidimensional
+			$name = array($name);
+		}
+
+		$allowed_types = array('charset', 'http-equiv', 'name', 'property');
+		$str = '';
+		foreach ($name as $meta)
+		{
+			// This is to preserve BC with pre-3.1 versions where only
+			// 'http-equiv' (default) and 'name' were supported.
+			if (isset($meta['type']))
+			{
+				if ($meta['type'] === 'equiv')
+				{
+					$meta['type'] = 'http-equiv';
+				}
+				elseif ( ! in_array($meta['type'], $allowed_types, TRUE))
+				{
+					$meta['type'] = 'name';
+				}
+			}
+
+			$type    = isset($meta['type'])    ? $meta['type']    : 'name';
+			$name    = isset($meta['name'])    ? $meta['name']    : '';
+			$content = isset($meta['content']) ? $meta['content'] : '';
+			$newline = isset($meta['newline']) ? $meta['newline'] : "\n";
+
+			$str .= '<meta '.$type.'="'.$name.($type === 'charset' ? '' : '" content="'.$content).'" />'.$newline;
+		}
+
+		return $str;
+	}
+}
diff --git a/system/helpers/index.html b/system/helpers/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/helpers/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/helpers/inflector_helper.php b/system/helpers/inflector_helper.php
new file mode 100644
index 00000000..b7f472bc
--- /dev/null
+++ b/system/helpers/inflector_helper.php
@@ -0,0 +1,326 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Inflector Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/inflector_helper.html
+ */
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('singular'))
+{
+	/**
+	 * Singular
+	 *
+	 * Takes a plural word and makes it singular
+	 *
+	 * @param	string	$str	Input string
+	 * @return	string
+	 */
+	function singular($str)
+	{
+		$result = strval($str);
+
+		if ( ! word_is_countable($result))
+		{
+			return $result;
+		}
+
+		$singular_rules = array(
+			'/(matr)ices$/'		=> '\1ix',
+			'/(vert|ind)ices$/'	=> '\1ex',
+			'/^(ox)en/'		=> '\1',
+			'/(alias)es$/'		=> '\1',
+			'/([octop|vir])i$/'	=> '\1us',
+			'/(cris|ax|test)es$/'	=> '\1is',
+			'/(shoe)s$/'		=> '\1',
+			'/(o)es$/'		=> '\1',
+			'/(bus|campus)es$/'	=> '\1',
+			'/([m|l])ice$/'		=> '\1ouse',
+			'/(x|ch|ss|sh)es$/'	=> '\1',
+			'/(m)ovies$/'		=> '\1\2ovie',
+			'/(s)eries$/'		=> '\1\2eries',
+			'/([^aeiouy]|qu)ies$/'	=> '\1y',
+			'/([lr])ves$/'		=> '\1f',
+			'/(tive)s$/'		=> '\1',
+			'/(hive)s$/'		=> '\1',
+			'/([^f])ves$/'		=> '\1fe',
+			'/(^analy)ses$/'	=> '\1sis',
+			'/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$/' => '\1\2sis',
+			'/([ti])a$/'		=> '\1um',
+			'/(p)eople$/'		=> '\1\2erson',
+			'/(m)en$/'		=> '\1an',
+			'/(s)tatuses$/'		=> '\1\2tatus',
+			'/(c)hildren$/'		=> '\1\2hild',
+			'/(n)ews$/'		=> '\1\2ews',
+			'/(quiz)zes$/'		=> '\1',
+			'/([^us])s$/'		=> '\1'
+		);
+
+		foreach ($singular_rules as $rule => $replacement)
+		{
+			if (preg_match($rule, $result))
+			{
+				$result = preg_replace($rule, $replacement, $result);
+				break;
+			}
+		}
+
+		return $result;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('plural'))
+{
+	/**
+	 * Plural
+	 *
+	 * Takes a singular word and makes it plural
+	 *
+	 * @param	string	$str	Input string
+	 * @return	string
+	 */
+	function plural($str)
+	{
+		$result = strval($str);
+
+		if ( ! word_is_countable($result))
+		{
+			return $result;
+		}
+
+		$plural_rules = array(
+			'/(quiz)$/'                => '\1zes',      // quizzes
+			'/^(ox)$/'                 => '\1\2en',     // ox
+			'/([m|l])ouse$/'           => '\1ice',      // mouse, louse
+			'/(matr|vert|ind)ix|ex$/'  => '\1ices',     // matrix, vertex, index
+			'/(x|ch|ss|sh)$/'          => '\1es',       // search, switch, fix, box, process, address
+			'/([^aeiouy]|qu)y$/'       => '\1ies',      // query, ability, agency
+			'/(hive)$/'                => '\1s',        // archive, hive
+			'/(?:([^f])fe|([lr])f)$/'  => '\1\2ves',    // half, safe, wife
+			'/sis$/'                   => 'ses',        // basis, diagnosis
+			'/([ti])um$/'              => '\1a',        // datum, medium
+			'/(p)erson$/'              => '\1eople',    // person, salesperson
+			'/(m)an$/'                 => '\1en',       // man, woman, spokesman
+			'/(c)hild$/'               => '\1hildren',  // child
+			'/(buffal|tomat)o$/'       => '\1\2oes',    // buffalo, tomato
+			'/(bu|campu)s$/'           => '\1\2ses',    // bus, campus
+			'/(alias|status|virus)$/'  => '\1es',       // alias
+			'/(octop)us$/'             => '\1i',        // octopus
+			'/(ax|cris|test)is$/'      => '\1es',       // axis, crisis
+			'/s$/'                     => 's',          // no change (compatibility)
+			'/$/'                      => 's',
+		);
+
+		foreach ($plural_rules as $rule => $replacement)
+		{
+			if (preg_match($rule, $result))
+			{
+				$result = preg_replace($rule, $replacement, $result);
+				break;
+			}
+		}
+
+		return $result;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('camelize'))
+{
+	/**
+	 * Camelize
+	 *
+	 * Takes multiple words separated by spaces or underscores and camelizes them
+	 *
+	 * @param	string	$str	Input string
+	 * @return	string
+	 */
+	function camelize($str)
+	{
+		return strtolower($str[0]).substr(str_replace(' ', '', ucwords(preg_replace('/[\s_]+/', ' ', $str))), 1);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('underscore'))
+{
+	/**
+	 * Underscore
+	 *
+	 * Takes multiple words separated by spaces and underscores them
+	 *
+	 * @param	string	$str	Input string
+	 * @return	string
+	 */
+	function underscore($str)
+	{
+		return preg_replace('/[\s]+/', '_', trim(MB_ENABLED ? mb_strtolower($str) : strtolower($str)));
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('humanize'))
+{
+	/**
+	 * Humanize
+	 *
+	 * Takes multiple words separated by the separator and changes them to spaces
+	 *
+	 * @param	string	$str		Input string
+	 * @param 	string	$separator	Input separator
+	 * @return	string
+	 */
+	function humanize($str, $separator = '_')
+	{
+		return ucwords(preg_replace('/['.preg_quote($separator).']+/', ' ', trim(MB_ENABLED ? mb_strtolower($str) : strtolower($str))));
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('word_is_countable'))
+{
+	/**
+	 * Checks if the given word has a plural version.
+	 *
+	 * @param	string	$word	Word to check
+	 * @return	bool
+	 */
+	function word_is_countable($word)
+	{
+		return ! in_array(
+			strtolower($word),
+			array(
+				'audio',
+				'bison',
+				'chassis',
+				'compensation',
+				'coreopsis',
+				'data',
+				'deer',
+				'education',
+				'emoji',
+				'equipment',
+				'fish',
+				'furniture',
+				'gold',
+				'information',
+				'knowledge',
+				'love',
+				'rain',
+				'money',
+				'moose',
+				'nutrition',
+				'offspring',
+				'plankton',
+				'pokemon',
+				'police',
+				'rice',
+				'series',
+				'sheep',
+				'species',
+				'swine',
+				'traffic',
+				'wheat'
+			)
+		);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('is_countable'))
+{
+	function is_countable($word)
+	{
+		trigger_error('is_countable() is a native PHP function since version 7.3.0; use word_is_countable() instead', E_USER_WARNING);
+		return word_is_countable($word);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('ordinal_format'))
+{
+	/**
+	 * Returns the English ordinal numeral for a given number
+	 *
+	 * @param  int    $number
+	 * @return string
+	 */
+	function ordinal_format($number)
+	{
+		if ( ! ctype_digit((string) $number) OR $number < 1)
+		{
+			return $number;
+		}
+
+		$last_digit = array(
+			0 => 'th',
+			1 => 'st',
+			2 => 'nd',
+			3 => 'rd',
+			4 => 'th',
+			5 => 'th',
+			6 => 'th',
+			7 => 'th',
+			8 => 'th',
+			9 => 'th'
+		);
+
+		if (($number % 100) >= 11 && ($number % 100) <= 13)
+		{
+			return $number.'th';
+		}
+
+		return $number.$last_digit[$number % 10];
+	}
+}
diff --git a/system/helpers/language_helper.php b/system/helpers/language_helper.php
new file mode 100644
index 00000000..dff6a6b2
--- /dev/null
+++ b/system/helpers/language_helper.php
@@ -0,0 +1,75 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Language Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/language_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('lang'))
+{
+	/**
+	 * Lang
+	 *
+	 * Fetches a language variable and optionally outputs a form label
+	 *
+	 * @param	string	$line		The language line
+	 * @param	string	$for		The "for" value (id of the form element)
+	 * @param	array	$attributes	Any additional HTML attributes
+	 * @return	string
+	 */
+	function lang($line, $for = '', $attributes = array())
+	{
+		$line = get_instance()->lang->line($line);
+
+		if ($for !== '')
+		{
+			$line = '<label for="'.$for.'"'._stringify_attributes($attributes).'>'.$line.'</label>';
+		}
+
+		return $line;
+	}
+}
diff --git a/system/helpers/number_helper.php b/system/helpers/number_helper.php
new file mode 100644
index 00000000..55fa1e5a
--- /dev/null
+++ b/system/helpers/number_helper.php
@@ -0,0 +1,94 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Number Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/number_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('byte_format'))
+{
+	/**
+	 * Formats a numbers as bytes, based on size, and adds the appropriate suffix
+	 *
+	 * @param	mixed	will be cast as int
+	 * @param	int
+	 * @return	string
+	 */
+	function byte_format($num, $precision = 1)
+	{
+		$CI =& get_instance();
+		$CI->lang->load('number');
+
+		if ($num >= 1000000000000)
+		{
+			$num = round($num / 1099511627776, $precision);
+			$unit = $CI->lang->line('terabyte_abbr');
+		}
+		elseif ($num >= 1000000000)
+		{
+			$num = round($num / 1073741824, $precision);
+			$unit = $CI->lang->line('gigabyte_abbr');
+		}
+		elseif ($num >= 1000000)
+		{
+			$num = round($num / 1048576, $precision);
+			$unit = $CI->lang->line('megabyte_abbr');
+		}
+		elseif ($num >= 1000)
+		{
+			$num = round($num / 1024, $precision);
+			$unit = $CI->lang->line('kilobyte_abbr');
+		}
+		else
+		{
+			$unit = $CI->lang->line('bytes');
+			return number_format($num).' '.$unit;
+		}
+
+		return number_format($num, $precision).' '.$unit;
+	}
+}
diff --git a/system/helpers/path_helper.php b/system/helpers/path_helper.php
new file mode 100644
index 00000000..47d10c2f
--- /dev/null
+++ b/system/helpers/path_helper.php
@@ -0,0 +1,82 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Path Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/path_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_realpath'))
+{
+	/**
+	 * Set Realpath
+	 *
+	 * @param	string
+	 * @param	bool	checks to see if the path exists
+	 * @return	string
+	 */
+	function set_realpath($path, $check_existance = FALSE)
+	{
+		// Security check to make sure the path is NOT a URL. No remote file inclusion!
+		if (preg_match('#^(http:\/\/|https:\/\/|www\.|ftp|php:\/\/)#i', $path) OR filter_var($path, FILTER_VALIDATE_IP) === $path)
+		{
+			show_error('The path you submitted must be a local server path, not a URL');
+		}
+
+		// Resolve the path
+		if (realpath($path) !== FALSE)
+		{
+			$path = realpath($path);
+		}
+		elseif ($check_existance && ! is_dir($path) && ! is_file($path))
+		{
+			show_error('Not a valid path: '.$path);
+		}
+
+		// Add a trailing slash, if this is a directory
+		return is_dir($path) ? rtrim($path, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR : $path;
+	}
+}
diff --git a/system/helpers/security_helper.php b/system/helpers/security_helper.php
new file mode 100644
index 00000000..f6dbafec
--- /dev/null
+++ b/system/helpers/security_helper.php
@@ -0,0 +1,113 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Security Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/security_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('xss_clean'))
+{
+	/**
+	 * XSS Filtering
+	 *
+	 * @param	string
+	 * @param	bool	whether or not the content is an image file
+	 * @return	string
+	 */
+	function xss_clean($str, $is_image = FALSE)
+	{
+		return get_instance()->security->xss_clean($str, $is_image);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('sanitize_filename'))
+{
+	/**
+	 * Sanitize Filename
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function sanitize_filename($filename)
+	{
+		return get_instance()->security->sanitize_filename($filename);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('strip_image_tags'))
+{
+	/**
+	 * Strip Image Tags
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function strip_image_tags($str)
+	{
+		return get_instance()->security->strip_image_tags($str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('encode_php_tags'))
+{
+	/**
+	 * Convert PHP tags to entities
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function encode_php_tags($str)
+	{
+		return str_replace(array('<?', '?>'), array('&lt;?', '?&gt;'), $str);
+	}
+}
diff --git a/system/helpers/string_helper.php b/system/helpers/string_helper.php
new file mode 100644
index 00000000..3a05525d
--- /dev/null
+++ b/system/helpers/string_helper.php
@@ -0,0 +1,257 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter String Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/string_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('strip_slashes'))
+{
+	/**
+	 * Strip Slashes
+	 *
+	 * Removes slashes contained in a string or in an array
+	 *
+	 * @param	mixed	string or array
+	 * @return	mixed	string or array
+	 */
+	function strip_slashes($str)
+	{
+		if ( ! is_array($str))
+		{
+			return stripslashes($str);
+		}
+
+		foreach ($str as $key => $val)
+		{
+			$str[$key] = strip_slashes($val);
+		}
+
+		return $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('strip_quotes'))
+{
+	/**
+	 * Strip Quotes
+	 *
+	 * Removes single and double quotes from a string
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function strip_quotes($str)
+	{
+		return str_replace(array('"', "'"), '', $str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('quotes_to_entities'))
+{
+	/**
+	 * Quotes to Entities
+	 *
+	 * Converts single and double quotes to entities
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function quotes_to_entities($str)
+	{
+		return str_replace(array("\'","\"","'",'"'), array("&#39;","&quot;","&#39;","&quot;"), $str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('reduce_double_slashes'))
+{
+	/**
+	 * Reduce Double Slashes
+	 *
+	 * Converts double slashes in a string to a single slash,
+	 * except those found in http://
+	 *
+	 * http://www.some-site.com//index.php
+	 *
+	 * becomes:
+	 *
+	 * http://www.some-site.com/index.php
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function reduce_double_slashes($str)
+	{
+		return preg_replace('#(^|[^:])//+#', '\\1/', $str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('reduce_multiples'))
+{
+	/**
+	 * Reduce Multiples
+	 *
+	 * Reduces multiple instances of a particular character.  Example:
+	 *
+	 * Fred, Bill,, Joe, Jimmy
+	 *
+	 * becomes:
+	 *
+	 * Fred, Bill, Joe, Jimmy
+	 *
+	 * @param	string
+	 * @param	string	the character you wish to reduce
+	 * @param	bool	TRUE/FALSE - whether to trim the character from the beginning/end
+	 * @return	string
+	 */
+	function reduce_multiples($str, $character = ',', $trim = FALSE)
+	{
+		$str = preg_replace('#'.preg_quote($character, '#').'{2,}#', $character, $str);
+		return ($trim === TRUE) ? trim($str, $character) : $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('random_string'))
+{
+	/**
+	 * Create a "Random" String
+	 *
+	 * @param	string	type of random string.  basic, alpha, alnum, numeric, nozero, unique, md5, encrypt and sha1
+	 * @param	int	number of characters
+	 * @return	string
+	 */
+	function random_string($type = 'alnum', $len = 8)
+	{
+		switch ($type)
+		{
+			case 'basic':
+				return mt_rand();
+			case 'alnum':
+			case 'numeric':
+			case 'nozero':
+			case 'alpha':
+				switch ($type)
+				{
+					case 'alpha':
+						$pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+						break;
+					case 'alnum':
+						$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+						break;
+					case 'numeric':
+						$pool = '0123456789';
+						break;
+					case 'nozero':
+						$pool = '123456789';
+						break;
+				}
+				return substr(str_shuffle(str_repeat($pool, ceil($len / strlen($pool)))), 0, $len);
+			case 'unique': // todo: remove in 3.1+
+			case 'md5':
+				return md5(uniqid(mt_rand()));
+			case 'encrypt': // todo: remove in 3.1+
+			case 'sha1':
+				return sha1(uniqid(mt_rand(), TRUE));
+		}
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('increment_string'))
+{
+	/**
+	 * Add's _1 to a string or increment the ending number to allow _2, _3, etc
+	 *
+	 * @param	string	required
+	 * @param	string	What should the duplicate number be appended with
+	 * @param	string	Which number should be used for the first dupe increment
+	 * @return	string
+	 */
+	function increment_string($str, $separator = '_', $first = 1)
+	{
+		preg_match('/(.+)'.preg_quote($separator, '/').'([0-9]+)$/', $str, $match);
+		return isset($match[2]) ? $match[1].$separator.($match[2] + 1) : $str.$separator.$first;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('alternator'))
+{
+	/**
+	 * Alternator
+	 *
+	 * Allows strings to be alternated. See docs...
+	 *
+	 * @param	string (as many parameters as needed)
+	 * @return	string
+	 */
+	function alternator()
+	{
+		static $i;
+
+		if (func_num_args() === 0)
+		{
+			$i = 0;
+			return '';
+		}
+
+		$args = func_get_args();
+		return $args[($i++ % count($args))];
+	}
+}
diff --git a/system/helpers/text_helper.php b/system/helpers/text_helper.php
new file mode 100644
index 00000000..5d5a958e
--- /dev/null
+++ b/system/helpers/text_helper.php
@@ -0,0 +1,567 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Text Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/text_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('word_limiter'))
+{
+	/**
+	 * Word Limiter
+	 *
+	 * Limits a string to X number of words.
+	 *
+	 * @param	string
+	 * @param	int
+	 * @param	string	the end character. Usually an ellipsis
+	 * @return	string
+	 */
+	function word_limiter($str, $limit = 100, $end_char = '&#8230;')
+	{
+		if (trim($str) === '')
+		{
+			return $str;
+		}
+
+		preg_match('/^\s*+(?:\S++\s*+){1,'.(int) $limit.'}/', $str, $matches);
+
+		if (strlen($str) === strlen($matches[0]))
+		{
+			$end_char = '';
+		}
+
+		return rtrim($matches[0]).$end_char;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('character_limiter'))
+{
+	/**
+	 * Character Limiter
+	 *
+	 * Limits the string based on the character count.  Preserves complete words
+	 * so the character count may not be exactly as specified.
+	 *
+	 * @param	string
+	 * @param	int
+	 * @param	string	the end character. Usually an ellipsis
+	 * @return	string
+	 */
+	function character_limiter($str, $n = 500, $end_char = '&#8230;')
+	{
+		if (mb_strlen($str) < $n)
+		{
+			return $str;
+		}
+
+		// a bit complicated, but faster than preg_replace with \s+
+		$str = preg_replace('/ {2,}/', ' ', str_replace(array("\r", "\n", "\t", "\v", "\f"), ' ', $str));
+
+		if (mb_strlen($str) <= $n)
+		{
+			return $str;
+		}
+
+		$out = '';
+		foreach (explode(' ', trim($str)) as $val)
+		{
+			$out .= $val.' ';
+
+			if (mb_strlen($out) >= $n)
+			{
+				$out = trim($out);
+				return (mb_strlen($out) === mb_strlen($str)) ? $out : $out.$end_char;
+			}
+		}
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('ascii_to_entities'))
+{
+	/**
+	 * High ASCII to Entities
+	 *
+	 * Converts high ASCII text and MS Word special characters to character entities
+	 *
+	 * @param	string	$str
+	 * @return	string
+	 */
+	function ascii_to_entities($str)
+	{
+		$out = '';
+		$length = defined('MB_OVERLOAD_STRING')
+			? mb_strlen($str, '8bit') - 1
+			: strlen($str) - 1;
+		for ($i = 0, $count = 1, $temp = array(); $i <= $length; $i++)
+		{
+			$ordinal = ord($str[$i]);
+
+			if ($ordinal < 128)
+			{
+				/*
+					If the $temp array has a value but we have moved on, then it seems only
+					fair that we output that entity and restart $temp before continuing. -Paul
+				*/
+				if (count($temp) === 1)
+				{
+					$out .= '&#'.array_shift($temp).';';
+					$count = 1;
+				}
+
+				$out .= $str[$i];
+			}
+			else
+			{
+				if (count($temp) === 0)
+				{
+					$count = ($ordinal < 224) ? 2 : 3;
+				}
+
+				$temp[] = $ordinal;
+
+				if (count($temp) === $count)
+				{
+					$number = ($count === 3)
+						? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64)
+						: (($temp[0] % 32) * 64) + ($temp[1] % 64);
+
+					$out .= '&#'.$number.';';
+					$count = 1;
+					$temp = array();
+				}
+				// If this is the last iteration, just output whatever we have
+				elseif ($i === $length)
+				{
+					$out .= '&#'.implode(';', $temp).';';
+				}
+			}
+		}
+
+		return $out;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('entities_to_ascii'))
+{
+	/**
+	 * Entities to ASCII
+	 *
+	 * Converts character entities back to ASCII
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	function entities_to_ascii($str, $all = TRUE)
+	{
+		if (preg_match_all('/\&#(\d+)\;/', $str, $matches))
+		{
+			for ($i = 0, $s = count($matches[0]); $i < $s; $i++)
+			{
+				$digits = $matches[1][$i];
+				$out = '';
+
+				if ($digits < 128)
+				{
+					$out .= chr($digits);
+
+				}
+				elseif ($digits < 2048)
+				{
+					$out .= chr(192 + (($digits - ($digits % 64)) / 64)).chr(128 + ($digits % 64));
+				}
+				else
+				{
+					$out .= chr(224 + (($digits - ($digits % 4096)) / 4096))
+						.chr(128 + ((($digits % 4096) - ($digits % 64)) / 64))
+						.chr(128 + ($digits % 64));
+				}
+
+				$str = str_replace($matches[0][$i], $out, $str);
+			}
+		}
+
+		if ($all)
+		{
+			return str_replace(
+				array('&amp;', '&lt;', '&gt;', '&quot;', '&apos;', '&#45;'),
+				array('&', '<', '>', '"', "'", '-'),
+				$str
+			);
+		}
+
+		return $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('word_censor'))
+{
+	/**
+	 * Word Censoring Function
+	 *
+	 * Supply a string and an array of disallowed words and any
+	 * matched words will be converted to #### or to the replacement
+	 * word you've submitted.
+	 *
+	 * @param	string	the text string
+	 * @param	string	the array of censored words
+	 * @param	string	the optional replacement value
+	 * @return	string
+	 */
+	function word_censor($str, $censored, $replacement = '')
+	{
+		if ( ! is_array($censored))
+		{
+			return $str;
+		}
+
+		$str = ' '.$str.' ';
+
+		// \w, \b and a few others do not match on a unicode character
+		// set for performance reasons. As a result words like über
+		// will not match on a word boundary. Instead, we'll assume that
+		// a bad word will be bookeneded by any of these characters.
+		$delim = '[-_\'\"`(){}<>\[\]|!?@#%&,.:;^~*+=\/ 0-9\n\r\t]';
+
+		foreach ($censored as $badword)
+		{
+			$badword = str_replace('\*', '\w*?', preg_quote($badword, '/'));
+			if ($replacement !== '')
+			{
+				$str = preg_replace(
+					"/({$delim})(".$badword.")({$delim})/i",
+					"\\1{$replacement}\\3",
+					$str
+				);
+			}
+			elseif (preg_match_all("/{$delim}(".$badword."){$delim}/i", $str, $matches, PREG_PATTERN_ORDER | PREG_OFFSET_CAPTURE))
+			{
+				$matches = $matches[1];
+				for ($i = count($matches) - 1; $i >= 0; $i--)
+				{
+					$length = strlen($matches[$i][0]);
+					$str = substr_replace(
+						$str,
+						str_repeat('#', $length),
+						$matches[$i][1],
+						$length
+					);
+				}
+			}
+		}
+
+		return trim($str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('highlight_code'))
+{
+	/**
+	 * Code Highlighter
+	 *
+	 * Colorizes code strings
+	 *
+	 * @param	string	the text string
+	 * @return	string
+	 */
+	function highlight_code($str)
+	{
+		/* The highlight string function encodes and highlights
+		 * brackets so we need them to start raw.
+		 *
+		 * Also replace any existing PHP tags to temporary markers
+		 * so they don't accidentally break the string out of PHP,
+		 * and thus, thwart the highlighting.
+		 */
+		$str = str_replace(
+			array('&lt;', '&gt;', '<?', '?>', '<%', '%>', '\\', '</script>'),
+			array('<', '>', 'phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'),
+			$str
+		);
+
+		// The highlight_string function requires that the text be surrounded
+		// by PHP tags, which we will remove later
+		$str = highlight_string('<?php '.$str.' ?>', TRUE);
+
+		// Remove our artificially added PHP, and the syntax highlighting that came with it
+		$str = preg_replace(
+			array(
+				'/<span style="color: #([A-Z0-9]+)">&lt;\?php(&nbsp;| )/i',
+				'/(<span style="color: #[A-Z0-9]+">.*?)\?&gt;<\/span>\n<\/span>\n<\/code>/is',
+				'/<span style="color: #[A-Z0-9]+"\><\/span>/i'
+			),
+			array(
+				'<span style="color: #$1">',
+				"$1</span>\n</span>\n</code>",
+				''
+			),
+			$str
+		);
+
+		// Replace our markers back to PHP tags.
+		return str_replace(
+			array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'),
+			array('&lt;?', '?&gt;', '&lt;%', '%&gt;', '\\', '&lt;/script&gt;'),
+			$str
+		);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('highlight_phrase'))
+{
+	/**
+	 * Phrase Highlighter
+	 *
+	 * Highlights a phrase within a text string
+	 *
+	 * @param	string	$str		the text string
+	 * @param	string	$phrase		the phrase you'd like to highlight
+	 * @param	string	$tag_open	the openging tag to precede the phrase with
+	 * @param	string	$tag_close	the closing tag to end the phrase with
+	 * @return	string
+	 */
+	function highlight_phrase($str, $phrase, $tag_open = '<mark>', $tag_close = '</mark>')
+	{
+		return ($str !== '' && $phrase !== '')
+			? preg_replace('/('.preg_quote($phrase, '/').')/i'.(UTF8_ENABLED ? 'u' : ''), $tag_open.'\\1'.$tag_close, $str)
+			: $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('convert_accented_characters'))
+{
+	/**
+	 * Convert Accented Foreign Characters to ASCII
+	 *
+	 * @param	string	$str	Input string
+	 * @return	string
+	 */
+	function convert_accented_characters($str)
+	{
+		static $array_from, $array_to;
+
+		if ( ! is_array($array_from))
+		{
+			if (file_exists(APPPATH.'config/foreign_chars.php'))
+			{
+				include(APPPATH.'config/foreign_chars.php');
+			}
+
+			if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php'))
+			{
+				include(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php');
+			}
+
+			if (empty($foreign_characters) OR ! is_array($foreign_characters))
+			{
+				$array_from = array();
+				$array_to = array();
+
+				return $str;
+			}
+
+			$array_from = array_keys($foreign_characters);
+			$array_to = array_values($foreign_characters);
+		}
+
+		return preg_replace($array_from, $array_to, $str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('word_wrap'))
+{
+	/**
+	 * Word Wrap
+	 *
+	 * Wraps text at the specified character. Maintains the integrity of words.
+	 * Anything placed between {unwrap}{/unwrap} will not be word wrapped, nor
+	 * will URLs.
+	 *
+	 * @param	string	$str		the text string
+	 * @param	int	$charlim = 76	the number of characters to wrap at
+	 * @return	string
+	 */
+	function word_wrap($str, $charlim = 76)
+	{
+		// Set the character limit
+		is_numeric($charlim) OR $charlim = 76;
+
+		// Reduce multiple spaces
+		$str = preg_replace('| +|', ' ', $str);
+
+		// Standardize newlines
+		if (strpos($str, "\r") !== FALSE)
+		{
+			$str = str_replace(array("\r\n", "\r"), "\n", $str);
+		}
+
+		// If the current word is surrounded by {unwrap} tags we'll
+		// strip the entire chunk and replace it with a marker.
+		$unwrap = array();
+		if (preg_match_all('|\{unwrap\}(.+?)\{/unwrap\}|s', $str, $matches))
+		{
+			for ($i = 0, $c = count($matches[0]); $i < $c; $i++)
+			{
+				$unwrap[] = $matches[1][$i];
+				$str = str_replace($matches[0][$i], '{{unwrapped'.$i.'}}', $str);
+			}
+		}
+
+		// Use PHP's native function to do the initial wordwrap.
+		// We set the cut flag to FALSE so that any individual words that are
+		// too long get left alone. In the next step we'll deal with them.
+		$str = wordwrap($str, $charlim, "\n", FALSE);
+
+		// Split the string into individual lines of text and cycle through them
+		$output = '';
+		foreach (explode("\n", $str) as $line)
+		{
+			// Is the line within the allowed character count?
+			// If so we'll join it to the output and continue
+			if (mb_strlen($line) <= $charlim)
+			{
+				$output .= $line."\n";
+				continue;
+			}
+
+			$temp = '';
+			while (mb_strlen($line) > $charlim)
+			{
+				// If the over-length word is a URL we won't wrap it
+				if (preg_match('!\[url.+\]|://|www\.!', $line))
+				{
+					break;
+				}
+
+				// Trim the word down
+				$temp .= mb_substr($line, 0, $charlim - 1);
+				$line = mb_substr($line, $charlim - 1);
+			}
+
+			// If $temp contains data it means we had to split up an over-length
+			// word into smaller chunks so we'll add it back to our current line
+			if ($temp !== '')
+			{
+				$output .= $temp."\n".$line."\n";
+			}
+			else
+			{
+				$output .= $line."\n";
+			}
+		}
+
+		// Put our markers back
+		if (count($unwrap) > 0)
+		{
+			foreach ($unwrap as $key => $val)
+			{
+				$output = str_replace('{{unwrapped'.$key.'}}', $val, $output);
+			}
+		}
+
+		return $output;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('ellipsize'))
+{
+	/**
+	 * Ellipsize String
+	 *
+	 * This function will strip tags from a string, split it at its max_length and ellipsize
+	 *
+	 * @param	string	string to ellipsize
+	 * @param	int	max length of string
+	 * @param	mixed	int (1|0) or float, .5, .2, etc for position to split
+	 * @param	string	ellipsis ; Default '...'
+	 * @return	string	ellipsized string
+	 */
+	function ellipsize($str, $max_length, $position = 1, $ellipsis = '&hellip;')
+	{
+		// Strip tags
+		$str = trim(strip_tags($str));
+
+		// Is the string long enough to ellipsize?
+		if (mb_strlen($str) <= $max_length)
+		{
+			return $str;
+		}
+
+		$beg = mb_substr($str, 0, floor($max_length * $position));
+		$position = ($position > 1) ? 1 : $position;
+
+		if ($position === 1)
+		{
+			$end = mb_substr($str, 0, -($max_length - mb_strlen($beg)));
+		}
+		else
+		{
+			$end = mb_substr($str, -($max_length - mb_strlen($beg)));
+		}
+
+		return $beg.$ellipsis.$end;
+	}
+}
diff --git a/system/helpers/typography_helper.php b/system/helpers/typography_helper.php
new file mode 100644
index 00000000..47617ffb
--- /dev/null
+++ b/system/helpers/typography_helper.php
@@ -0,0 +1,104 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Typography Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/typography_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('nl2br_except_pre'))
+{
+	/**
+	 * Convert newlines to HTML line breaks except within PRE tags
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function nl2br_except_pre($str)
+	{
+		$CI =& get_instance();
+		$CI->load->library('typography');
+		return $CI->typography->nl2br_except_pre($str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('auto_typography'))
+{
+	/**
+	 * Auto Typography Wrapper Function
+	 *
+	 * @param	string	$str
+	 * @param	bool	$reduce_linebreaks = FALSE	whether to reduce multiple instances of double newlines to two
+	 * @return	string
+	 */
+	function auto_typography($str, $reduce_linebreaks = FALSE)
+	{
+		$CI =& get_instance();
+		$CI->load->library('typography');
+		return $CI->typography->auto_typography($str, $reduce_linebreaks);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('entity_decode'))
+{
+	/**
+	 * HTML Entities Decode
+	 *
+	 * This function is a replacement for html_entity_decode()
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	function entity_decode($str, $charset = NULL)
+	{
+		return get_instance()->security->entity_decode($str, $charset);
+	}
+}
diff --git a/system/helpers/url_helper.php b/system/helpers/url_helper.php
new file mode 100644
index 00000000..4c060a20
--- /dev/null
+++ b/system/helpers/url_helper.php
@@ -0,0 +1,569 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter URL Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/url_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('site_url'))
+{
+	/**
+	 * Site URL
+	 *
+	 * Create a local URL based on your basepath. Segments can be passed via the
+	 * first parameter either as a string or an array.
+	 *
+	 * @param	string	$uri
+	 * @param	string	$protocol
+	 * @return	string
+	 */
+	function site_url($uri = '', $protocol = NULL)
+	{
+		return get_instance()->config->site_url($uri, $protocol);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('base_url'))
+{
+	/**
+	 * Base URL
+	 *
+	 * Create a local URL based on your basepath.
+	 * Segments can be passed in as a string or an array, same as site_url
+	 * or a URL to a file can be passed in, e.g. to an image file.
+	 *
+	 * @param	string	$uri
+	 * @param	string	$protocol
+	 * @return	string
+	 */
+	function base_url($uri = '', $protocol = NULL)
+	{
+		return get_instance()->config->base_url($uri, $protocol);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('current_url'))
+{
+	/**
+	 * Current URL
+	 *
+	 * Returns the full URL (including segments) of the page where this
+	 * function is placed
+	 *
+	 * @return	string
+	 */
+	function current_url()
+	{
+		$CI =& get_instance();
+		return $CI->config->site_url($CI->uri->uri_string());
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('uri_string'))
+{
+	/**
+	 * URL String
+	 *
+	 * Returns the URI segments.
+	 *
+	 * @return	string
+	 */
+	function uri_string()
+	{
+		return get_instance()->uri->uri_string();
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('index_page'))
+{
+	/**
+	 * Index page
+	 *
+	 * Returns the "index_page" from your config file
+	 *
+	 * @return	string
+	 */
+	function index_page()
+	{
+		return get_instance()->config->item('index_page');
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('anchor'))
+{
+	/**
+	 * Anchor Link
+	 *
+	 * Creates an anchor based on the local URL.
+	 *
+	 * @param	string	the URL
+	 * @param	string	the link title
+	 * @param	mixed	any attributes
+	 * @return	string
+	 */
+	function anchor($uri = '', $title = '', $attributes = '')
+	{
+		$title = (string) $title;
+
+		$site_url = is_array($uri)
+			? site_url($uri)
+			: (preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri));
+
+		if ($title === '')
+		{
+			$title = $site_url;
+		}
+
+		if ($attributes !== '')
+		{
+			$attributes = _stringify_attributes($attributes);
+		}
+
+		return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('anchor_popup'))
+{
+	/**
+	 * Anchor Link - Pop-up version
+	 *
+	 * Creates an anchor based on the local URL. The link
+	 * opens a new window based on the attributes specified.
+	 *
+	 * @param	string	the URL
+	 * @param	string	the link title
+	 * @param	mixed	any attributes
+	 * @return	string
+	 */
+	function anchor_popup($uri = '', $title = '', $attributes = FALSE)
+	{
+		$title = (string) $title;
+		$site_url = preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri);
+
+		if ($title === '')
+		{
+			$title = $site_url;
+		}
+
+		if ($attributes === FALSE)
+		{
+			return '<a href="'.$site_url.'" onclick="window.open(\''.$site_url."', '_blank'); return false;\">".$title.'</a>';
+		}
+
+		if ( ! is_array($attributes))
+		{
+			$attributes = array($attributes);
+
+			// Ref: https://www.w3schools.com/jsref/met_win_open.asp
+			$window_name = '_blank';
+		}
+		elseif ( ! empty($attributes['window_name']))
+		{
+			$window_name = $attributes['window_name'];
+			unset($attributes['window_name']);
+		}
+		else
+		{
+			$window_name = '_blank';
+		}
+
+		foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'menubar' => 'no', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0') as $key => $val)
+		{
+			$atts[$key] = isset($attributes[$key]) ? $attributes[$key] : $val;
+			unset($attributes[$key]);
+		}
+
+		$attributes = _stringify_attributes($attributes);
+
+		return '<a href="'.$site_url
+			.'" onclick="window.open(\''.$site_url."', '".$window_name."', '"._stringify_attributes($atts, TRUE)."'); return false;\""
+			.$attributes.'>'.$title.'</a>';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('mailto'))
+{
+	/**
+	 * Mailto Link
+	 *
+	 * @param	string	the email address
+	 * @param	string	the link title
+	 * @param	mixed	any attributes
+	 * @return	string
+	 */
+	function mailto($email, $title = '', $attributes = '')
+	{
+		$title = (string) $title;
+
+		if ($title === '')
+		{
+			$title = $email;
+		}
+
+		return '<a href="mailto:'.$email.'"'._stringify_attributes($attributes).'>'.$title.'</a>';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('safe_mailto'))
+{
+	/**
+	 * Encoded Mailto Link
+	 *
+	 * Create a spam-protected mailto link written in Javascript
+	 *
+	 * @param	string	the email address
+	 * @param	string	the link title
+	 * @param	mixed	any attributes
+	 * @return	string
+	 */
+	function safe_mailto($email, $title = '', $attributes = '')
+	{
+		$title = (string) $title;
+
+		if ($title === '')
+		{
+			$title = $email;
+		}
+
+		$x = str_split('<a href="mailto:', 1);
+
+		for ($i = 0, $l = strlen($email); $i < $l; $i++)
+		{
+			$x[] = '|'.ord($email[$i]);
+		}
+
+		$x[] = '"';
+
+		if ($attributes !== '')
+		{
+			if (is_array($attributes))
+			{
+				foreach ($attributes as $key => $val)
+				{
+					$x[] = ' '.$key.'="';
+					for ($i = 0, $l = strlen($val); $i < $l; $i++)
+					{
+						$x[] = '|'.ord($val[$i]);
+					}
+					$x[] = '"';
+				}
+			}
+			else
+			{
+				for ($i = 0, $l = strlen($attributes); $i < $l; $i++)
+				{
+					$x[] = $attributes[$i];
+				}
+			}
+		}
+
+		$x[] = '>';
+
+		$temp = array();
+		for ($i = 0, $l = strlen($title); $i < $l; $i++)
+		{
+			$ordinal = ord($title[$i]);
+
+			if ($ordinal < 128)
+			{
+				$x[] = '|'.$ordinal;
+			}
+			else
+			{
+				if (count($temp) === 0)
+				{
+					$count = ($ordinal < 224) ? 2 : 3;
+				}
+
+				$temp[] = $ordinal;
+				if (count($temp) === $count)
+				{
+					$number = ($count === 3)
+							? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64)
+							: (($temp[0] % 32) * 64) + ($temp[1] % 64);
+					$x[] = '|'.$number;
+					$count = 1;
+					$temp = array();
+				}
+			}
+		}
+
+		$x[] = '<'; $x[] = '/'; $x[] = 'a'; $x[] = '>';
+
+		$x = array_reverse($x);
+
+		$output = "<script type=\"text/javascript\">\n"
+			."\t//<![CDATA[\n"
+			."\tvar l=new Array();\n";
+
+		for ($i = 0, $c = count($x); $i < $c; $i++)
+		{
+			$output .= "\tl[".$i."] = '".$x[$i]."';\n";
+		}
+
+		$output .= "\n\tfor (var i = l.length-1; i >= 0; i=i-1) {\n"
+			."\t\tif (l[i].substring(0, 1) === '|') document.write(\"&#\"+unescape(l[i].substring(1))+\";\");\n"
+			."\t\telse document.write(unescape(l[i]));\n"
+			."\t}\n"
+			."\t//]]>\n"
+			.'</script>';
+
+		return $output;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('auto_link'))
+{
+	/**
+	 * Auto-linker
+	 *
+	 * Automatically links URL and Email addresses.
+	 * Note: There's a bit of extra code here to deal with
+	 * URLs or emails that end in a period. We'll strip these
+	 * off and add them after the link.
+	 *
+	 * @param	string	the string
+	 * @param	string	the type: email, url, or both
+	 * @param	bool	whether to create pop-up links
+	 * @return	string
+	 */
+	function auto_link($str, $type = 'both', $popup = FALSE)
+	{
+		// Find and replace any URLs.
+		if ($type !== 'email' && preg_match_all('#(\w*://|www\.)[a-z0-9]+(-+[a-z0-9]+)*(\.[a-z0-9]+(-+[a-z0-9]+)*)+(/([^\s()<>;]+\w)?/?)?#i', $str, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER))
+		{
+			// Set our target HTML if using popup links.
+			$target = ($popup) ? ' target="_blank" rel="noopener"' : '';
+
+			// We process the links in reverse order (last -> first) so that
+			// the returned string offsets from preg_match_all() are not
+			// moved as we add more HTML.
+			foreach (array_reverse($matches) as $match)
+			{
+				// $match[0] is the matched string/link
+				// $match[1] is either a protocol prefix or 'www.'
+				//
+				// With PREG_OFFSET_CAPTURE, both of the above is an array,
+				// where the actual value is held in [0] and its offset at the [1] index.
+				$a = '<a href="'.(strpos($match[1][0], '/') ? '' : 'http://').$match[0][0].'"'.$target.'>'.$match[0][0].'</a>';
+				$str = substr_replace($str, $a, $match[0][1], strlen($match[0][0]));
+			}
+		}
+
+		// Find and replace any emails.
+		if ($type !== 'url' && preg_match_all('#([\w\.\-\+]+@[a-z0-9\-]+\.[a-z0-9\-\.]+[^[:punct:]\s])#i', $str, $matches, PREG_OFFSET_CAPTURE))
+		{
+			foreach (array_reverse($matches[0]) as $match)
+			{
+				if (filter_var($match[0], FILTER_VALIDATE_EMAIL) !== FALSE)
+				{
+					$str = substr_replace($str, safe_mailto($match[0]), $match[1], strlen($match[0]));
+				}
+			}
+		}
+
+		return $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('prep_url'))
+{
+	/**
+	 * Prep URL
+	 *
+	 * Simply adds the http:// part if no scheme is included
+	 *
+	 * @param	string	the URL
+	 * @return	string
+	 */
+	function prep_url($str = '')
+	{
+		if ($str === '')
+		{
+			return '';
+		}
+
+		$url = parse_url($str);
+
+		if ( ! $url OR ! isset($url['scheme']))
+		{
+			return 'http://'.$str;
+		}
+
+		return $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('url_title'))
+{
+	/**
+	 * Create URL Title
+	 *
+	 * Takes a "title" string as input and creates a
+	 * human-friendly URL string with a "separator" string
+	 * as the word separator.
+	 *
+	 * @todo	Remove old 'dash' and 'underscore' usage in 3.1+.
+	 * @param	string	$str		Input string
+	 * @param	string	$separator	Word separator
+	 *			(usually '-' or '_')
+	 * @param	bool	$lowercase	Whether to transform the output string to lowercase
+	 * @return	string
+	 */
+	function url_title($str, $separator = '-', $lowercase = FALSE)
+	{
+		if ($separator === 'dash')
+		{
+			$separator = '-';
+		}
+		elseif ($separator === 'underscore')
+		{
+			$separator = '_';
+		}
+
+		$q_separator = preg_quote($separator, '#');
+
+		$trans = array(
+			'&.+?;'			=> '',
+			'[^\w\d _-]'		=> '',
+			'\s+'			=> $separator,
+			'('.$q_separator.')+'	=> $separator
+		);
+
+		$str = strip_tags($str);
+		foreach ($trans as $key => $val)
+		{
+			$str = preg_replace('#'.$key.'#i'.(UTF8_ENABLED ? 'u' : ''), $val, $str);
+		}
+
+		if ($lowercase === TRUE)
+		{
+			$str = strtolower($str);
+		}
+
+		return trim(trim($str, $separator));
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('redirect'))
+{
+	/**
+	 * Header Redirect
+	 *
+	 * Header redirect in two flavors
+	 * For very fine grained control over headers, you could use the Output
+	 * Library's set_header() function.
+	 *
+	 * @param	string	$uri	URL
+	 * @param	string	$method	Redirect method
+	 *			'auto', 'location' or 'refresh'
+	 * @param	int	$code	HTTP Response status code
+	 * @return	void
+	 */
+	function redirect($uri = '', $method = 'auto', $code = NULL)
+	{
+		if ( ! preg_match('#^(\w+:)?//#i', $uri))
+		{
+			$uri = site_url($uri);
+		}
+
+		// IIS environment likely? Use 'refresh' for better compatibility
+		if ($method === 'auto' && isset($_SERVER['SERVER_SOFTWARE']) && strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !== FALSE)
+		{
+			$method = 'refresh';
+		}
+		elseif ($method !== 'refresh' && (empty($code) OR ! is_numeric($code)))
+		{
+			if (isset($_SERVER['SERVER_PROTOCOL'], $_SERVER['REQUEST_METHOD']) && $_SERVER['SERVER_PROTOCOL'] === 'HTTP/1.1')
+			{
+				$code = ($_SERVER['REQUEST_METHOD'] !== 'GET')
+					? 303	// reference: https://en.wikipedia.org/wiki/Post/Redirect/Get
+					: 307;
+			}
+			else
+			{
+				$code = 302;
+			}
+		}
+
+		switch ($method)
+		{
+			case 'refresh':
+				header('Refresh:0;url='.$uri);
+				break;
+			default:
+				header('Location: '.$uri, TRUE, $code);
+				break;
+		}
+		exit;
+	}
+}
diff --git a/system/helpers/xml_helper.php b/system/helpers/xml_helper.php
new file mode 100644
index 00000000..f83f3f54
--- /dev/null
+++ b/system/helpers/xml_helper.php
@@ -0,0 +1,90 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter XML Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/xml_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('xml_convert'))
+{
+	/**
+	 * Convert Reserved XML characters to Entities
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	function xml_convert($str, $protect_all = FALSE)
+	{
+		$temp = '__TEMP_AMPERSANDS__';
+
+		// Replace entities to temporary markers so that
+		// ampersands won't get messed up
+		$str = preg_replace('/&#(\d+);/', $temp.'\\1;', $str);
+
+		if ($protect_all === TRUE)
+		{
+			$str = preg_replace('/&(\w+);/', $temp.'\\1;', $str);
+		}
+
+		$str = str_replace(
+			array('&', '<', '>', '"', "'", '-'),
+			array('&amp;', '&lt;', '&gt;', '&quot;', '&apos;', '&#45;'),
+			$str
+		);
+
+		// Decode the temp markers back to entities
+		$str = preg_replace('/'.$temp.'(\d+);/', '&#\\1;', $str);
+
+		if ($protect_all === TRUE)
+		{
+			return preg_replace('/'.$temp.'(\w+);/', '&\\1;', $str);
+		}
+
+		return $str;
+	}
+}
diff --git a/system/index.html b/system/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/language/english/calendar_lang.php b/system/language/english/calendar_lang.php
new file mode 100644
index 00000000..ce838142
--- /dev/null
+++ b/system/language/english/calendar_lang.php
@@ -0,0 +1,84 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['cal_su'] = 'Su';
+$lang['cal_mo'] = 'Mo';
+$lang['cal_tu'] = 'Tu';
+$lang['cal_we'] = 'We';
+$lang['cal_th'] = 'Th';
+$lang['cal_fr'] = 'Fr';
+$lang['cal_sa'] = 'Sa';
+$lang['cal_sun'] = 'Sun';
+$lang['cal_mon'] = 'Mon';
+$lang['cal_tue'] = 'Tue';
+$lang['cal_wed'] = 'Wed';
+$lang['cal_thu'] = 'Thu';
+$lang['cal_fri'] = 'Fri';
+$lang['cal_sat'] = 'Sat';
+$lang['cal_sunday'] = 'Sunday';
+$lang['cal_monday'] = 'Monday';
+$lang['cal_tuesday'] = 'Tuesday';
+$lang['cal_wednesday'] = 'Wednesday';
+$lang['cal_thursday'] = 'Thursday';
+$lang['cal_friday'] = 'Friday';
+$lang['cal_saturday'] = 'Saturday';
+$lang['cal_jan'] = 'Jan';
+$lang['cal_feb'] = 'Feb';
+$lang['cal_mar'] = 'Mar';
+$lang['cal_apr'] = 'Apr';
+$lang['cal_may'] = 'May';
+$lang['cal_jun'] = 'Jun';
+$lang['cal_jul'] = 'Jul';
+$lang['cal_aug'] = 'Aug';
+$lang['cal_sep'] = 'Sep';
+$lang['cal_oct'] = 'Oct';
+$lang['cal_nov'] = 'Nov';
+$lang['cal_dec'] = 'Dec';
+$lang['cal_january'] = 'January';
+$lang['cal_february'] = 'February';
+$lang['cal_march'] = 'March';
+$lang['cal_april'] = 'April';
+$lang['cal_mayl'] = 'May';
+$lang['cal_june'] = 'June';
+$lang['cal_july'] = 'July';
+$lang['cal_august'] = 'August';
+$lang['cal_september'] = 'September';
+$lang['cal_october'] = 'October';
+$lang['cal_november'] = 'November';
+$lang['cal_december'] = 'December';
diff --git a/system/language/english/date_lang.php b/system/language/english/date_lang.php
new file mode 100644
index 00000000..aa796b89
--- /dev/null
+++ b/system/language/english/date_lang.php
@@ -0,0 +1,94 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['date_year'] = 'Year';
+$lang['date_years'] = 'Years';
+$lang['date_month'] = 'Month';
+$lang['date_months'] = 'Months';
+$lang['date_week'] = 'Week';
+$lang['date_weeks'] = 'Weeks';
+$lang['date_day'] = 'Day';
+$lang['date_days'] = 'Days';
+$lang['date_hour'] = 'Hour';
+$lang['date_hours'] = 'Hours';
+$lang['date_minute'] = 'Minute';
+$lang['date_minutes'] = 'Minutes';
+$lang['date_second'] = 'Second';
+$lang['date_seconds'] = 'Seconds';
+
+$lang['UM12']	= '(UTC -12:00) Baker/Howland Island';
+$lang['UM11']	= '(UTC -11:00) Niue';
+$lang['UM10']	= '(UTC -10:00) Hawaii-Aleutian Standard Time, Cook Islands, Tahiti';
+$lang['UM95']	= '(UTC -9:30) Marquesas Islands';
+$lang['UM9']	= '(UTC -9:00) Alaska Standard Time, Gambier Islands';
+$lang['UM8']	= '(UTC -8:00) Pacific Standard Time, Clipperton Island';
+$lang['UM7']	= '(UTC -7:00) Mountain Standard Time';
+$lang['UM6']	= '(UTC -6:00) Central Standard Time';
+$lang['UM5']	= '(UTC -5:00) Eastern Standard Time, Western Caribbean Standard Time';
+$lang['UM45']	= '(UTC -4:30) Venezuelan Standard Time';
+$lang['UM4']	= '(UTC -4:00) Atlantic Standard Time, Eastern Caribbean Standard Time';
+$lang['UM35']	= '(UTC -3:30) Newfoundland Standard Time';
+$lang['UM3']	= '(UTC -3:00) Argentina, Brazil, French Guiana, Uruguay';
+$lang['UM2']	= '(UTC -2:00) South Georgia/South Sandwich Islands';
+$lang['UM1']	= '(UTC -1:00) Azores, Cape Verde Islands';
+$lang['UTC']	= '(UTC) Greenwich Mean Time, Western European Time';
+$lang['UP1']	= '(UTC +1:00) Central European Time, West Africa Time';
+$lang['UP2']	= '(UTC +2:00) Central Africa Time, Eastern European Time, Kaliningrad Time';
+$lang['UP3']	= '(UTC +3:00) Moscow Time, East Africa Time, Arabia Standard Time';
+$lang['UP35']	= '(UTC +3:30) Iran Standard Time';
+$lang['UP4']	= '(UTC +4:00) Azerbaijan Standard Time, Samara Time';
+$lang['UP45']	= '(UTC +4:30) Afghanistan';
+$lang['UP5']	= '(UTC +5:00) Pakistan Standard Time, Yekaterinburg Time';
+$lang['UP55']	= '(UTC +5:30) Indian Standard Time, Sri Lanka Time';
+$lang['UP575']	= '(UTC +5:45) Nepal Time';
+$lang['UP6']	= '(UTC +6:00) Bangladesh Standard Time, Bhutan Time, Omsk Time';
+$lang['UP65']	= '(UTC +6:30) Cocos Islands, Myanmar';
+$lang['UP7']	= '(UTC +7:00) Krasnoyarsk Time, Cambodia, Laos, Thailand, Vietnam';
+$lang['UP8']	= '(UTC +8:00) Australian Western Standard Time, Beijing Time, Irkutsk Time';
+$lang['UP875']	= '(UTC +8:45) Australian Central Western Standard Time';
+$lang['UP9']	= '(UTC +9:00) Japan Standard Time, Korea Standard Time, Yakutsk Time';
+$lang['UP95']	= '(UTC +9:30) Australian Central Standard Time';
+$lang['UP10']	= '(UTC +10:00) Australian Eastern Standard Time, Vladivostok Time';
+$lang['UP105']	= '(UTC +10:30) Lord Howe Island';
+$lang['UP11']	= '(UTC +11:00) Srednekolymsk Time, Solomon Islands, Vanuatu';
+$lang['UP115']	= '(UTC +11:30) Norfolk Island';
+$lang['UP12']	= '(UTC +12:00) Fiji, Gilbert Islands, Kamchatka Time, New Zealand Standard Time';
+$lang['UP1275']	= '(UTC +12:45) Chatham Islands Standard Time';
+$lang['UP13']	= '(UTC +13:00) Samoa Time Zone, Phoenix Islands Time, Tonga';
+$lang['UP14']	= '(UTC +14:00) Line Islands';
diff --git a/system/language/english/db_lang.php b/system/language/english/db_lang.php
new file mode 100644
index 00000000..4a680146
--- /dev/null
+++ b/system/language/english/db_lang.php
@@ -0,0 +1,63 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['db_invalid_connection_str'] = 'Unable to determine the database settings based on the connection string you submitted.';
+$lang['db_unable_to_connect'] = 'Unable to connect to your database server using the provided settings.';
+$lang['db_unable_to_select'] = 'Unable to select the specified database: %s';
+$lang['db_unable_to_create'] = 'Unable to create the specified database: %s';
+$lang['db_invalid_query'] = 'The query you submitted is not valid.';
+$lang['db_must_set_table'] = 'You must set the database table to be used with your query.';
+$lang['db_must_use_set'] = 'You must use the "set" method to update an entry.';
+$lang['db_must_use_index'] = 'You must specify an index to match on for batch updates.';
+$lang['db_batch_missing_index'] = 'One or more rows submitted for batch updating is missing the specified index.';
+$lang['db_must_use_where'] = 'Updates are not allowed unless they contain a "where" clause.';
+$lang['db_del_must_use_where'] = 'Deletes are not allowed unless they contain a "where" or "like" clause.';
+$lang['db_field_param_missing'] = 'To fetch fields requires the name of the table as a parameter.';
+$lang['db_unsupported_function'] = 'This feature is not available for the database you are using.';
+$lang['db_transaction_failure'] = 'Transaction failure: Rollback performed.';
+$lang['db_unable_to_drop'] = 'Unable to drop the specified database.';
+$lang['db_unsupported_feature'] = 'Unsupported feature of the database platform you are using.';
+$lang['db_unsupported_compression'] = 'The file compression format you chose is not supported by your server.';
+$lang['db_filepath_error'] = 'Unable to write data to the file path you have submitted.';
+$lang['db_invalid_cache_path'] = 'The cache path you submitted is not valid or writable.';
+$lang['db_table_name_required'] = 'A table name is required for that operation.';
+$lang['db_column_name_required'] = 'A column name is required for that operation.';
+$lang['db_column_definition_required'] = 'A column definition is required for that operation.';
+$lang['db_unable_to_set_charset'] = 'Unable to set client connection character set: %s';
+$lang['db_error_heading'] = 'A Database Error Occurred';
diff --git a/system/language/english/email_lang.php b/system/language/english/email_lang.php
new file mode 100644
index 00000000..df0fd29c
--- /dev/null
+++ b/system/language/english/email_lang.php
@@ -0,0 +1,58 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['email_must_be_array'] = 'The email validation method must be passed an array.';
+$lang['email_invalid_address'] = 'Invalid email address: %s';
+$lang['email_attachment_missing'] = 'Unable to locate the following email attachment: %s';
+$lang['email_attachment_unreadable'] = 'Unable to open this attachment: %s';
+$lang['email_no_from'] = 'Cannot send mail with no "From" header.';
+$lang['email_no_recipients'] = 'You must include recipients: To, Cc, or Bcc';
+$lang['email_send_failure_phpmail'] = 'Unable to send email using PHP mail(). Your server might not be configured to send mail using this method.';
+$lang['email_send_failure_sendmail'] = 'Unable to send email using PHP Sendmail. Your server might not be configured to send mail using this method.';
+$lang['email_send_failure_smtp'] = 'Unable to send email using PHP SMTP. Your server might not be configured to send mail using this method.';
+$lang['email_sent'] = 'Your message has been successfully sent using the following protocol: %s';
+$lang['email_no_socket'] = 'Unable to open a socket to Sendmail. Please check settings.';
+$lang['email_no_hostname'] = 'You did not specify a SMTP hostname.';
+$lang['email_smtp_error'] = 'The following SMTP error was encountered: %s';
+$lang['email_no_smtp_unpw'] = 'Error: You must assign a SMTP username and password.';
+$lang['email_failed_smtp_login'] = 'Failed to send AUTH LOGIN command. Error: %s';
+$lang['email_smtp_auth_un'] = 'Failed to authenticate username. Error: %s';
+$lang['email_smtp_auth_pw'] = 'Failed to authenticate password. Error: %s';
+$lang['email_smtp_data_failure'] = 'Unable to send data: %s';
+$lang['email_exit_status'] = 'Exit status code: %s';
diff --git a/system/language/english/form_validation_lang.php b/system/language/english/form_validation_lang.php
new file mode 100644
index 00000000..74a2512c
--- /dev/null
+++ b/system/language/english/form_validation_lang.php
@@ -0,0 +1,70 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['form_validation_required']		= 'The {field} field is required.';
+$lang['form_validation_isset']			= 'The {field} field must have a value.';
+$lang['form_validation_valid_email']		= 'The {field} field must contain a valid email address.';
+$lang['form_validation_valid_emails']		= 'The {field} field must contain all valid email addresses.';
+$lang['form_validation_valid_url']		= 'The {field} field must contain a valid URL.';
+$lang['form_validation_valid_ip']		= 'The {field} field must contain a valid IP.';
+$lang['form_validation_valid_mac']		= 'The {field} field must contain a valid MAC.';
+$lang['form_validation_valid_base64']		= 'The {field} field must contain a valid Base64 string.';
+$lang['form_validation_min_length']		= 'The {field} field must be at least {param} characters in length.';
+$lang['form_validation_max_length']		= 'The {field} field cannot exceed {param} characters in length.';
+$lang['form_validation_exact_length']		= 'The {field} field must be exactly {param} characters in length.';
+$lang['form_validation_alpha']			= 'The {field} field may only contain alphabetical characters.';
+$lang['form_validation_alpha_numeric']		= 'The {field} field may only contain alpha-numeric characters.';
+$lang['form_validation_alpha_numeric_spaces']	= 'The {field} field may only contain alpha-numeric characters and spaces.';
+$lang['form_validation_alpha_dash']		= 'The {field} field may only contain alpha-numeric characters, underscores, and dashes.';
+$lang['form_validation_numeric']		= 'The {field} field must contain only numbers.';
+$lang['form_validation_is_numeric']		= 'The {field} field must contain only numeric characters.';
+$lang['form_validation_integer']		= 'The {field} field must contain an integer.';
+$lang['form_validation_regex_match']		= 'The {field} field is not in the correct format.';
+$lang['form_validation_matches']		= 'The {field} field does not match the {param} field.';
+$lang['form_validation_differs']		= 'The {field} field must differ from the {param} field.';
+$lang['form_validation_is_unique'] 		= 'The {field} field must contain a unique value.';
+$lang['form_validation_is_natural']		= 'The {field} field must only contain digits.';
+$lang['form_validation_is_natural_no_zero']	= 'The {field} field must only contain digits and must be greater than zero.';
+$lang['form_validation_decimal']		= 'The {field} field must contain a decimal number.';
+$lang['form_validation_less_than']		= 'The {field} field must contain a number less than {param}.';
+$lang['form_validation_less_than_equal_to']	= 'The {field} field must contain a number less than or equal to {param}.';
+$lang['form_validation_greater_than']		= 'The {field} field must contain a number greater than {param}.';
+$lang['form_validation_greater_than_equal_to']	= 'The {field} field must contain a number greater than or equal to {param}.';
+$lang['form_validation_error_message_not_set']	= 'Unable to access an error message corresponding to your field name {field}.';
+$lang['form_validation_in_list']		= 'The {field} field must be one of: {param}.';
diff --git a/system/language/english/ftp_lang.php b/system/language/english/ftp_lang.php
new file mode 100644
index 00000000..70f5b086
--- /dev/null
+++ b/system/language/english/ftp_lang.php
@@ -0,0 +1,51 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['ftp_no_connection']		= 'Unable to locate a valid connection ID. Please make sure you are connected before performing any file routines.';
+$lang['ftp_unable_to_connect']		= 'Unable to connect to your FTP server using the supplied hostname.';
+$lang['ftp_unable_to_login']		= 'Unable to login to your FTP server. Please check your username and password.';
+$lang['ftp_unable_to_mkdir']		= 'Unable to create the directory you have specified.';
+$lang['ftp_unable_to_changedir']	= 'Unable to change directories.';
+$lang['ftp_unable_to_chmod']		= 'Unable to set file permissions. Please check your path.';
+$lang['ftp_unable_to_upload']		= 'Unable to upload the specified file. Please check your path.';
+$lang['ftp_unable_to_download']		= 'Unable to download the specified file. Please check your path.';
+$lang['ftp_no_source_file']		= 'Unable to locate the source file. Please check your path.';
+$lang['ftp_unable_to_rename']		= 'Unable to rename the file.';
+$lang['ftp_unable_to_delete']		= 'Unable to delete the file.';
+$lang['ftp_unable_to_move']		= 'Unable to move the file. Please make sure the destination directory exists.';
diff --git a/system/language/english/imglib_lang.php b/system/language/english/imglib_lang.php
new file mode 100644
index 00000000..9a26b8a9
--- /dev/null
+++ b/system/language/english/imglib_lang.php
@@ -0,0 +1,58 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['imglib_source_image_required'] = 'You must specify a source image in your preferences.';
+$lang['imglib_gd_required'] = 'The GD image library is required for this feature.';
+$lang['imglib_gd_required_for_props'] = 'Your server must support the GD image library in order to determine the image properties.';
+$lang['imglib_unsupported_imagecreate'] = 'Your server does not support the GD function required to process this type of image.';
+$lang['imglib_gif_not_supported'] = 'GIF images are often not supported due to licensing restrictions. You may have to use JPG or PNG images instead.';
+$lang['imglib_jpg_not_supported'] = 'JPG images are not supported.';
+$lang['imglib_png_not_supported'] = 'PNG images are not supported.';
+$lang['imglib_webp_not_supported'] = 'WEBP images are not supported.';
+$lang['imglib_jpg_or_png_required'] = 'The image resize protocol specified in your preferences only works with JPEG or PNG image types.';
+$lang['imglib_copy_error'] = 'An error was encountered while attempting to replace the file. Please make sure your file directory is writable.';
+$lang['imglib_rotate_unsupported'] = 'Image rotation does not appear to be supported by your server.';
+$lang['imglib_libpath_invalid'] = 'The path to your image library is not correct. Please set the correct path in your image preferences.';
+$lang['imglib_image_process_failed'] = 'Image processing failed. Please verify that your server supports the chosen protocol and that the path to your image library is correct.';
+$lang['imglib_rotation_angle_required'] = 'An angle of rotation is required to rotate the image.';
+$lang['imglib_invalid_path'] = 'The path to the image is not correct.';
+$lang['imglib_invalid_image'] = 'The provided image is not valid.';
+$lang['imglib_copy_failed'] = 'The image copy routine failed.';
+$lang['imglib_missing_font'] = 'Unable to find a font to use.';
+$lang['imglib_save_failed'] = 'Unable to save the image. Please make sure the image and file directory are writable.';
diff --git a/system/language/english/index.html b/system/language/english/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/language/english/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/language/english/migration_lang.php b/system/language/english/migration_lang.php
new file mode 100644
index 00000000..967d59cc
--- /dev/null
+++ b/system/language/english/migration_lang.php
@@ -0,0 +1,47 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['migration_none_found'] = 'No migrations were found.';
+$lang['migration_not_found'] = 'No migration could be found with the version number: %s.';
+$lang['migration_sequence_gap'] = 'There is a gap in the migration sequence near version number: %s.';
+$lang['migration_multiple_version'] = 'There are multiple migrations with the same version number: %s.';
+$lang['migration_class_doesnt_exist'] = 'The migration class "%s" could not be found.';
+$lang['migration_missing_up_method'] = 'The migration class "%s" is missing an "up" method.';
+$lang['migration_missing_down_method'] = 'The migration class "%s" is missing a "down" method.';
+$lang['migration_invalid_filename'] = 'Migration "%s" has an invalid filename.';
diff --git a/system/language/english/number_lang.php b/system/language/english/number_lang.php
new file mode 100644
index 00000000..f1e50bd1
--- /dev/null
+++ b/system/language/english/number_lang.php
@@ -0,0 +1,44 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['terabyte_abbr'] = 'TB';
+$lang['gigabyte_abbr'] = 'GB';
+$lang['megabyte_abbr'] = 'MB';
+$lang['kilobyte_abbr'] = 'KB';
+$lang['bytes'] = 'Bytes';
diff --git a/system/language/english/pagination_lang.php b/system/language/english/pagination_lang.php
new file mode 100644
index 00000000..1d113dfb
--- /dev/null
+++ b/system/language/english/pagination_lang.php
@@ -0,0 +1,43 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['pagination_first_link'] = '&lsaquo; First';
+$lang['pagination_next_link'] = '&gt;';
+$lang['pagination_prev_link'] = '&lt;';
+$lang['pagination_last_link'] = 'Last &rsaquo;';
diff --git a/system/language/english/profiler_lang.php b/system/language/english/profiler_lang.php
new file mode 100644
index 00000000..15729672
--- /dev/null
+++ b/system/language/english/profiler_lang.php
@@ -0,0 +1,60 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['profiler_database'] = 'DATABASE';
+$lang['profiler_controller_info'] = 'CLASS/METHOD';
+$lang['profiler_benchmarks'] = 'BENCHMARKS';
+$lang['profiler_queries'] = 'QUERIES';
+$lang['profiler_get_data'] = 'GET DATA';
+$lang['profiler_post_data'] = 'POST DATA';
+$lang['profiler_uri_string'] = 'URI STRING';
+$lang['profiler_memory_usage'] = 'MEMORY USAGE';
+$lang['profiler_config'] = 'CONFIG VARIABLES';
+$lang['profiler_session_data'] = 'SESSION DATA';
+$lang['profiler_headers'] = 'HTTP HEADERS';
+$lang['profiler_no_db'] = 'Database driver is not currently loaded';
+$lang['profiler_no_queries'] = 'No queries were run';
+$lang['profiler_no_post'] = 'No POST data exists';
+$lang['profiler_no_get'] = 'No GET data exists';
+$lang['profiler_no_uri'] = 'No URI data exists';
+$lang['profiler_no_memory'] = 'Memory Usage Unavailable';
+$lang['profiler_no_profiles'] = 'No Profile data - all Profiler sections have been disabled.';
+$lang['profiler_section_hide'] = 'Hide';
+$lang['profiler_section_show'] = 'Show';
+$lang['profiler_seconds'] = 'seconds';
diff --git a/system/language/english/unit_test_lang.php b/system/language/english/unit_test_lang.php
new file mode 100644
index 00000000..b5a9cc4d
--- /dev/null
+++ b/system/language/english/unit_test_lang.php
@@ -0,0 +1,58 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['ut_test_name'] = 'Test Name';
+$lang['ut_test_datatype'] = 'Test Datatype';
+$lang['ut_res_datatype'] = 'Expected Datatype';
+$lang['ut_result'] = 'Result';
+$lang['ut_undefined'] = 'Undefined Test Name';
+$lang['ut_file'] = 'File Name';
+$lang['ut_line'] = 'Line Number';
+$lang['ut_passed'] = 'Passed';
+$lang['ut_failed'] = 'Failed';
+$lang['ut_boolean'] = 'Boolean';
+$lang['ut_integer'] = 'Integer';
+$lang['ut_float'] = 'Float';
+$lang['ut_double'] = 'Float'; // can be the same as float
+$lang['ut_string'] = 'String';
+$lang['ut_array'] = 'Array';
+$lang['ut_object'] = 'Object';
+$lang['ut_resource'] = 'Resource';
+$lang['ut_null'] = 'Null';
+$lang['ut_notes'] = 'Notes';
diff --git a/system/language/english/upload_lang.php b/system/language/english/upload_lang.php
new file mode 100644
index 00000000..f5158a3f
--- /dev/null
+++ b/system/language/english/upload_lang.php
@@ -0,0 +1,55 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['upload_userfile_not_set'] = 'Unable to find a post variable called userfile.';
+$lang['upload_file_exceeds_limit'] = 'The uploaded file exceeds the maximum allowed size in your PHP configuration file.';
+$lang['upload_file_exceeds_form_limit'] = 'The uploaded file exceeds the maximum size allowed by the submission form.';
+$lang['upload_file_partial'] = 'The file was only partially uploaded.';
+$lang['upload_no_temp_directory'] = 'The temporary folder is missing.';
+$lang['upload_unable_to_write_file'] = 'The file could not be written to disk.';
+$lang['upload_stopped_by_extension'] = 'The file upload was stopped by extension.';
+$lang['upload_no_file_selected'] = 'You did not select a file to upload.';
+$lang['upload_invalid_filetype'] = 'The filetype you are attempting to upload is not allowed.';
+$lang['upload_invalid_filesize'] = 'The file you are attempting to upload is larger than the permitted size.';
+$lang['upload_invalid_dimensions'] = 'The image you are attempting to upload doesn\'t fit into the allowed dimensions.';
+$lang['upload_destination_error'] = 'A problem was encountered while attempting to move the uploaded file to the final destination.';
+$lang['upload_no_filepath'] = 'The upload path does not appear to be valid.';
+$lang['upload_no_file_types'] = 'You have not specified any allowed file types.';
+$lang['upload_bad_filename'] = 'The file name you submitted already exists on the server.';
+$lang['upload_not_writable'] = 'The upload destination folder does not appear to be writable.';
diff --git a/system/language/index.html b/system/language/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/language/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/libraries/Cache/Cache.php b/system/libraries/Cache/Cache.php
new file mode 100644
index 00000000..b1241766
--- /dev/null
+++ b/system/libraries/Cache/Cache.php
@@ -0,0 +1,268 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Caching Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Cache extends CI_Driver_Library {
+
+	/**
+	 * Valid cache drivers
+	 *
+	 * @var array
+	 */
+	protected $valid_drivers = array(
+		'apc',
+		'apcu',
+		'dummy',
+		'file',
+		'memcached',
+		'redis',
+		'wincache'
+	);
+
+	/**
+	 * Path of cache files (if file-based cache)
+	 *
+	 * @var string
+	 */
+	protected $_cache_path = NULL;
+
+	/**
+	 * Reference to the driver
+	 *
+	 * @var mixed
+	 */
+	protected $_adapter = 'dummy';
+
+	/**
+	 * Fallback driver
+	 *
+	 * @var string
+	 */
+	protected $_backup_driver = 'dummy';
+
+	/**
+	 * Cache key prefix
+	 *
+	 * @var	string
+	 */
+	public $key_prefix = '';
+
+	/**
+	 * Constructor
+	 *
+	 * Initialize class properties based on the configuration array.
+	 *
+	 * @param	array	$config = array()
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		isset($config['adapter']) && $this->_adapter = $config['adapter'];
+		isset($config['backup']) && $this->_backup_driver = $config['backup'];
+		isset($config['key_prefix']) && $this->key_prefix = $config['key_prefix'];
+
+		// If the specified adapter isn't available, check the backup.
+		if ( ! $this->is_supported($this->_adapter))
+		{
+			if ( ! $this->is_supported($this->_backup_driver))
+			{
+				// Backup isn't supported either. Default to 'Dummy' driver.
+				log_message('error', 'Cache adapter "'.$this->_adapter.'" and backup "'.$this->_backup_driver.'" are both unavailable. Cache is now using "Dummy" adapter.');
+				$this->_adapter = 'dummy';
+			}
+			else
+			{
+				// Backup is supported. Set it to primary.
+				log_message('debug', 'Cache adapter "'.$this->_adapter.'" is unavailable. Falling back to "'.$this->_backup_driver.'" backup adapter.');
+				$this->_adapter = $this->_backup_driver;
+			}
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get
+	 *
+	 * Look for a value in the cache. If it exists, return the data
+	 * if not, return FALSE
+	 *
+	 * @param	string	$id
+	 * @return	mixed	value matching $id or FALSE on failure
+	 */
+	public function get($id)
+	{
+		return $this->{$this->_adapter}->get($this->key_prefix.$id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Save
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data to store
+	 * @param	int	$ttl	Cache TTL (in seconds)
+	 * @param	bool	$raw	Whether to store the raw value
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		return $this->{$this->_adapter}->save($this->key_prefix.$id, $data, $ttl, $raw);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	string	$id	Cache ID
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function delete($id)
+	{
+		return $this->{$this->_adapter}->delete($this->key_prefix.$id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		return $this->{$this->_adapter}->increment($this->key_prefix.$id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		return $this->{$this->_adapter}->decrement($this->key_prefix.$id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the cache
+	 *
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function clean()
+	{
+		return $this->{$this->_adapter}->clean();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @param	string	$type = 'user'	user/filehits
+	 * @return	mixed	array containing cache info on success OR FALSE on failure
+	 */
+	public function cache_info($type = 'user')
+	{
+		return $this->{$this->_adapter}->cache_info($type);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	string	$id	key to get cache metadata on
+	 * @return	mixed	cache item metadata
+	 */
+	public function get_metadata($id)
+	{
+		return $this->{$this->_adapter}->get_metadata($this->key_prefix.$id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Is the requested driver supported in this environment?
+	 *
+	 * @param	string	$driver	The driver to test
+	 * @return	array
+	 */
+	public function is_supported($driver)
+	{
+		static $support;
+
+		if ( ! isset($support, $support[$driver]))
+		{
+			$support[$driver] = $this->{$driver}->is_supported();
+		}
+
+		return $support[$driver];
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get currently loaded driver
+	 *
+	 * @return string
+	 */
+	public function get_loaded_driver()
+	{
+		return $this->_adapter;
+	}
+}
diff --git a/system/libraries/Cache/drivers/Cache_apc.php b/system/libraries/Cache/drivers/Cache_apc.php
new file mode 100644
index 00000000..c0527e66
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_apc.php
@@ -0,0 +1,217 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter APC Caching Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Cache_apc extends CI_Driver {
+
+	/**
+	 * Class constructor
+	 *
+	 * Only present so that an error message is logged
+	 * if APC is not available.
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		if ( ! $this->is_supported())
+		{
+			log_message('error', 'Cache: Failed to initialize APC; extension not loaded/enabled?');
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get
+	 *
+	 * Look for a value in the cache. If it exists, return the data
+	 * if not, return FALSE
+	 *
+	 * @param	string
+	 * @return	mixed	value that is stored/FALSE on failure
+	 */
+	public function get($id)
+	{
+		$success = FALSE;
+		$data = apc_fetch($id, $success);
+
+		return ($success === TRUE) ? $data : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Save
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data to store
+	 * @param	int	$ttl	Length of time (in seconds) to cache the data
+	 * @param	bool	$raw	Whether to store the raw value (unused)
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		return apc_store($id, $data, (int) $ttl);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	unique identifier of the item in the cache
+	 * @return	bool	true on success/false on failure
+	 */
+	public function delete($id)
+	{
+		return apc_delete($id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		return apc_inc($id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		return apc_dec($id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the cache
+	 *
+	 * @return	bool	false on failure/true on success
+	 */
+	public function clean()
+	{
+		return apc_clear_cache('user');
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @param	string	user/filehits
+	 * @return	mixed	array on success, false on failure
+	 */
+	public function cache_info($type = NULL)
+	{
+		return apc_cache_info($type);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	key to get cache metadata on
+	 * @return	mixed	array on success/false on failure
+	 */
+	public function get_metadata($id)
+	{
+		$cache_info = apc_cache_info('user', FALSE);
+		if (empty($cache_info) OR empty($cache_info['cache_list']))
+		{
+			return FALSE;
+		}
+
+		foreach ($cache_info['cache_list'] as &$entry)
+		{
+			if ($entry['info'] !== $id)
+			{
+				continue;
+			}
+
+			$success  = FALSE;
+			$metadata = array(
+				'expire' => ($entry['ttl'] ? $entry['mtime'] + $entry['ttl'] : 0),
+				'mtime'  => $entry['ttl'],
+				'data'   => apc_fetch($id, $success)
+			);
+
+			return ($success === TRUE) ? $metadata : FALSE;
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * is_supported()
+	 *
+	 * Check to see if APC is available on this system, bail if it isn't.
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		return (extension_loaded('apc') && ini_get('apc.enabled'));
+	}
+}
diff --git a/system/libraries/Cache/drivers/Cache_apcu.php b/system/libraries/Cache/drivers/Cache_apcu.php
new file mode 100644
index 00000000..01f80e79
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_apcu.php
@@ -0,0 +1,219 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.2.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter APCu Caching Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		CodeIgniter Dev team
+ */
+class CI_Cache_apcu extends CI_Driver {
+
+	/**
+	 * Class constructor
+	 *
+	 * Only present so that an error message is logged
+	 * if APCu is not available.
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		if ( ! $this->is_supported())
+		{
+			log_message('error', 'Cache: Failed to initialize APCu; extension not loaded/enabled?');
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get
+	 *
+	 * Look for a value in the cache. If it exists, return the data
+	 * if not, return FALSE
+	 *
+	 * @param	string
+	 * @return	mixed	value that is stored/FALSE on failure
+	 */
+	public function get($id)
+	{
+		$success = FALSE;
+		$data = apcu_fetch($id, $success);
+
+		if ($success === TRUE)
+		{
+			return is_array($data)
+				? $data[0]
+				: $data;
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Save
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data to store
+	 * @param	int	$ttl	Length of time (in seconds) to cache the data
+	 * @param	bool	$raw	Whether to store the raw value
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		$ttl = (int) $ttl;
+
+		return apcu_store(
+			$id,
+			($raw === TRUE ? $data : array($data, time(), $ttl)),
+			$ttl
+		);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	unique identifier of the item in the cache
+	 * @return	bool	true on success/false on failure
+	 */
+	public function delete($id)
+	{
+		return apcu_delete($id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		return apcu_inc($id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		return apcu_dec($id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the cache
+	 *
+	 * @return	bool	false on failure/true on success
+	 */
+	public function clean()
+	{
+		return apcu_clear_cache();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @return	mixed	array on success, false on failure
+	 */
+	public function cache_info()
+	{
+		return apcu_cache_info();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	key to get cache metadata on
+	 * @return	mixed	array on success/false on failure
+	 */
+	public function get_metadata($id)
+	{
+		$success = FALSE;
+		$stored = apcu_fetch($id, $success);
+
+		if ($success === FALSE OR count($stored) !== 3)
+		{
+			return FALSE;
+		}
+
+		list($data, $time, $ttl) = $stored;
+
+		return array(
+			'expire'  => $time + $ttl,
+			'mtime'   => $time,
+			'data'    => $data
+		);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * is_supported()
+	 *
+	 * Check to see if APCu is available on this system, bail if it isn't.
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		return (extension_loaded('apcu') && ini_get('apc.enabled'));
+	}
+}
\ No newline at end of file
diff --git a/system/libraries/Cache/drivers/Cache_dummy.php b/system/libraries/Cache/drivers/Cache_dummy.php
new file mode 100644
index 00000000..0a90d069
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_dummy.php
@@ -0,0 +1,172 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Dummy Caching Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Cache_dummy extends CI_Driver {
+
+	/**
+	 * Get
+	 *
+	 * Since this is the dummy class, it's always going to return FALSE.
+	 *
+	 * @param	string
+	 * @return	bool	FALSE
+	 */
+	public function get($id)
+	{
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Save
+	 *
+	 * @param	string	Unique Key
+	 * @param	mixed	Data to store
+	 * @param	int	Length of time (in seconds) to cache the data
+	 * @param	bool	Whether to store the raw value
+	 * @return	bool	TRUE, Simulating success
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	unique identifier of the item in the cache
+	 * @return	bool	TRUE, simulating success
+	 */
+	public function delete($id)
+	{
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the cache
+	 *
+	 * @return	bool	TRUE, simulating success
+	 */
+	public function clean()
+	{
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @param	string	user/filehits
+	 * @return	bool	FALSE
+	 */
+	public function cache_info($type = NULL)
+	{
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	key to get cache metadata on
+	 * @return	bool	FALSE
+	 */
+	public function get_metadata($id)
+	{
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Is this caching driver supported on the system?
+	 * Of course this one is.
+	 *
+	 * @return	bool	TRUE
+	 */
+	public function is_supported()
+	{
+		return TRUE;
+	}
+
+}
diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
new file mode 100644
index 00000000..bde35141
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -0,0 +1,286 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter File Caching Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Cache_file extends CI_Driver {
+
+	/**
+	 * Directory in which to save cache files
+	 *
+	 * @var string
+	 */
+	protected $_cache_path;
+
+	/**
+	 * Initialize file-based cache
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$CI =& get_instance();
+		$CI->load->helper('file');
+		$path = $CI->config->item('cache_path');
+		$this->_cache_path = ($path === '') ? APPPATH.'cache/' : $path;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Fetch from cache
+	 *
+	 * @param	string	$id	Cache ID
+	 * @return	mixed	Data on success, FALSE on failure
+	 */
+	public function get($id)
+	{
+		$data = $this->_get($id);
+		return is_array($data) ? $data['data'] : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Save into cache
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data to store
+	 * @param	int	$ttl	Time to live in seconds
+	 * @param	bool	$raw	Whether to store the raw value (unused)
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		$contents = array(
+			'time'		=> time(),
+			'ttl'		=> $ttl,
+			'data'		=> $data
+		);
+
+		if (write_file($this->_cache_path.$id, serialize($contents)))
+		{
+			chmod($this->_cache_path.$id, 0640);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	unique identifier of item in cache
+	 * @return	bool	true on success/false on failure
+	 */
+	public function delete($id)
+	{
+		return is_file($this->_cache_path.$id) ? unlink($this->_cache_path.$id) : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	New value on success, FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		$data = $this->_get($id);
+
+		if ($data === FALSE)
+		{
+			$data = array('data' => 0, 'ttl' => 60);
+		}
+		elseif ( ! is_int($data['data']))
+		{
+			return FALSE;
+		}
+
+		$new_value = $data['data'] + $offset;
+		return $this->save($id, $new_value, $data['ttl'])
+			? $new_value
+			: FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	New value on success, FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		$data = $this->_get($id);
+
+		if ($data === FALSE)
+		{
+			$data = array('data' => 0, 'ttl' => 60);
+		}
+		elseif ( ! is_int($data['data']))
+		{
+			return FALSE;
+		}
+
+		$new_value = $data['data'] - $offset;
+		return $this->save($id, $new_value, $data['ttl'])
+			? $new_value
+			: FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the Cache
+	 *
+	 * @return	bool	false on failure/true on success
+	 */
+	public function clean()
+	{
+		return delete_files($this->_cache_path, FALSE, TRUE);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * Not supported by file-based caching
+	 *
+	 * @param	string	user/filehits
+	 * @return	mixed	FALSE
+	 */
+	public function cache_info($type = NULL)
+	{
+		return get_dir_file_info($this->_cache_path);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	key to get cache metadata on
+	 * @return	mixed	FALSE on failure, array on success.
+	 */
+	public function get_metadata($id)
+	{
+		if ( ! is_file($this->_cache_path.$id))
+		{
+			return FALSE;
+		}
+
+		$data = unserialize(file_get_contents($this->_cache_path.$id));
+
+		if (is_array($data))
+		{
+			$mtime = filemtime($this->_cache_path.$id);
+
+			if ( ! isset($data['ttl'], $data['time']))
+			{
+				return FALSE;
+			}
+
+			return array(
+				'expire' => $data['time'] + $data['ttl'],
+				'mtime'	 => $mtime
+			);
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Is supported
+	 *
+	 * In the file driver, check to see that the cache directory is indeed writable
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		return is_really_writable($this->_cache_path);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get all data
+	 *
+	 * Internal method to get all the relevant data about a cache item
+	 *
+	 * @param	string	$id	Cache ID
+	 * @return	mixed	Data array on success or FALSE on failure
+	 */
+	protected function _get($id)
+	{
+		if ( ! is_file($this->_cache_path.$id))
+		{
+			return FALSE;
+		}
+
+		$data = unserialize(file_get_contents($this->_cache_path.$id));
+
+		if ($data['ttl'] > 0 && time() > $data['time'] + $data['ttl'])
+		{
+			file_exists($this->_cache_path.$id) && unlink($this->_cache_path.$id);
+			return FALSE;
+		}
+
+		return $data;
+	}
+
+}
diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php
new file mode 100644
index 00000000..24969e0b
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_memcached.php
@@ -0,0 +1,325 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Memcached Caching Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Cache_memcached extends CI_Driver {
+
+	/**
+	 * Holds the memcached object
+	 *
+	 * @var object
+	 */
+	protected $_memcached;
+
+	/**
+	 * Memcached configuration
+	 *
+	 * @var array
+	 */
+	protected $_config = array(
+		'default' => array(
+			'host'		=> '127.0.0.1',
+			'port'		=> 11211,
+			'weight'	=> 1
+		)
+	);
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Setup Memcache(d)
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		// Try to load memcached server info from the config file.
+		$CI =& get_instance();
+		$defaults = $this->_config['default'];
+
+		if ($CI->config->load('memcached', TRUE, TRUE))
+		{
+			$this->_config = $CI->config->config['memcached'];
+		}
+
+		if (class_exists('Memcached', FALSE))
+		{
+			$this->_memcached = new Memcached();
+		}
+		elseif (class_exists('Memcache', FALSE))
+		{
+			$this->_memcached = new Memcache();
+		}
+		else
+		{
+			log_message('error', 'Cache: Failed to create Memcache(d) object; extension not loaded?');
+			return;
+		}
+
+		foreach ($this->_config as $cache_name => $cache_server)
+		{
+			if ( ! isset($cache_server['hostname']))
+			{
+				log_message('debug', 'Cache: Memcache(d) configuration "'.$cache_name.'" doesn\'t include a hostname; ignoring.');
+				continue;
+			}
+			elseif ($cache_server['hostname'][0] === '/')
+			{
+				$cache_server['port'] = 0;
+			}
+			elseif (empty($cache_server['port']))
+			{
+				$cache_server['port'] = $defaults['port'];
+			}
+
+			isset($cache_server['weight']) OR $cache_server['weight'] = $defaults['weight'];
+
+			if ($this->_memcached instanceof Memcache)
+			{
+				// Third parameter is persistence and defaults to TRUE.
+				$this->_memcached->addServer(
+					$cache_server['hostname'],
+					$cache_server['port'],
+					TRUE,
+					$cache_server['weight']
+				);
+			}
+			elseif ($this->_memcached instanceof Memcached)
+			{
+				$this->_memcached->addServer(
+					$cache_server['hostname'],
+					$cache_server['port'],
+					$cache_server['weight']
+				);
+			}
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Fetch from cache
+	 *
+	 * @param	string	$id	Cache ID
+	 * @return	mixed	Data on success, FALSE on failure
+	 */
+	public function get($id)
+	{
+		$data = $this->_memcached->get($id);
+
+		return is_array($data) ? $data[0] : $data;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Save
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data being cached
+	 * @param	int	$ttl	Time to live
+	 * @param	bool	$raw	Whether to store the raw value
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		if ($raw !== TRUE)
+		{
+			$data = array($data, time(), $ttl);
+		}
+
+		if ($this->_memcached instanceof Memcached)
+		{
+			return $this->_memcached->set($id, $data, $ttl);
+		}
+		elseif ($this->_memcached instanceof Memcache)
+		{
+			return $this->_memcached->set($id, $data, 0, $ttl);
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	$id	key to be deleted.
+	 * @return	bool	true on success, false on failure
+	 */
+	public function delete($id)
+	{
+		return $this->_memcached->delete($id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		if (($result = $this->_memcached->increment($id, $offset)) === FALSE)
+		{
+			return $this->_memcached->add($id, $offset) ? $offset : FALSE;
+		}
+
+		return $result;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		if (($result = $this->_memcached->decrement($id, $offset)) === FALSE)
+		{
+			return $this->_memcached->add($id, 0) ? 0 : FALSE;
+		}
+
+		return $result;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the Cache
+	 *
+	 * @return	bool	false on failure/true on success
+	 */
+	public function clean()
+	{
+		return $this->_memcached->flush();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @return	mixed	array on success, false on failure
+	 */
+	public function cache_info()
+	{
+		return $this->_memcached->getStats();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	$id	key to get cache metadata on
+	 * @return	mixed	FALSE on failure, array on success.
+	 */
+	public function get_metadata($id)
+	{
+		$stored = $this->_memcached->get($id);
+
+		if (count($stored) !== 3)
+		{
+			return FALSE;
+		}
+
+		list($data, $time, $ttl) = $stored;
+
+		return array(
+			'expire'	=> $time + $ttl,
+			'mtime'		=> $time,
+			'data'		=> $data
+		);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Is supported
+	 *
+	 * Returns FALSE if memcached is not supported on the system.
+	 * If it is, we setup the memcached object & return TRUE
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		return (extension_loaded('memcached') OR extension_loaded('memcache'));
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class destructor
+	 *
+	 * Closes the connection to Memcache(d) if present.
+	 *
+	 * @return	void
+	 */
+	public function __destruct()
+	{
+		if ($this->_memcached instanceof Memcache)
+		{
+			$this->_memcached->close();
+		}
+		elseif ($this->_memcached instanceof Memcached && method_exists($this->_memcached, 'quit'))
+		{
+			$this->_memcached->quit();
+		}
+	}
+}
diff --git a/system/libraries/Cache/drivers/Cache_redis.php b/system/libraries/Cache/drivers/Cache_redis.php
new file mode 100644
index 00000000..9b082d11
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_redis.php
@@ -0,0 +1,364 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Redis Caching Class
+ *
+ * @package	   CodeIgniter
+ * @subpackage Libraries
+ * @category   Core
+ * @author	   Anton Lindqvist <anton@qvister.se>
+ * @link
+ */
+class CI_Cache_redis extends CI_Driver
+{
+	/**
+	 * Default config
+	 *
+	 * @static
+	 * @var	array
+	 */
+	protected static $_default_config = array(
+		'host' => '127.0.0.1',
+		'password' => NULL,
+		'port' => 6379,
+		'timeout' => 0,
+		'database' => 0
+	);
+
+	/**
+	 * Redis connection
+	 *
+	 * @var	Redis
+	 */
+	protected $_redis;
+
+
+	/**
+	 * del()/delete() method name depending on phpRedis version
+	 *
+	 * @var	string
+	 */
+	protected static $_delete_name;
+
+	/**
+	 * sRem()/sRemove() method name depending on phpRedis version
+	 *
+	 * @var	string
+	 */
+	protected static $_sRemove_name;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Setup Redis
+	 *
+	 * Loads Redis config file if present. Will halt execution
+	 * if a Redis connection can't be established.
+	 *
+	 * @return	void
+	 * @see		Redis::connect()
+	 */
+	public function __construct()
+	{
+		if ( ! $this->is_supported())
+		{
+			log_message('error', 'Cache: Failed to create Redis object; extension not loaded?');
+			return;
+		}
+
+		if ( ! isset(static::$_delete_name, static::$_sRemove_name))
+		{
+			if (version_compare(phpversion('redis'), '5', '>='))
+			{
+				static::$_delete_name  = 'del';
+				static::$_sRemove_name = 'sRem';
+			}
+			else
+			{
+				static::$_delete_name  = 'delete';
+				static::$_sRemove_name = 'sRemove';
+			}
+		}
+
+		$CI =& get_instance();
+
+		if ($CI->config->load('redis', TRUE, TRUE))
+		{
+			$config = array_merge(self::$_default_config, $CI->config->item('redis'));
+		}
+		else
+		{
+			$config = self::$_default_config;
+		}
+
+		$this->_redis = new Redis();
+
+		try
+		{
+			if ( ! $this->_redis->connect($config['host'], ($config['host'][0] === '/' ? 0 : $config['port']), $config['timeout']))
+			{
+				log_message('error', 'Cache: Redis connection failed. Check your configuration.');
+			}
+
+			if (isset($config['password']) && ! $this->_redis->auth($config['password']))
+			{
+				log_message('error', 'Cache: Redis authentication failed.');
+			}
+
+			if (isset($config['database']) && $config['database'] > 0 && ! $this->_redis->select($config['database']))
+			{
+				log_message('error', 'Cache: Redis select database failed.');
+			}
+		}
+		catch (RedisException $e)
+		{
+			log_message('error', 'Cache: Redis connection refused ('.$e->getMessage().')');
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get cache
+	 *
+	 * @param	string	$key	Cache ID
+	 * @return	mixed
+	 */
+	public function get($key)
+	{
+		$data = $this->_redis->hMGet($key, array('__ci_type', '__ci_value'));
+
+		if ($value !== FALSE && $this->_redis->sIsMember('_ci_redis_serialized', $key))
+		{
+			return FALSE;
+		}
+
+		switch ($data['__ci_type'])
+		{
+			case 'array':
+			case 'object':
+				return unserialize($data['__ci_value']);
+			case 'boolean':
+			case 'integer':
+			case 'double': // Yes, 'double' is returned and NOT 'float'
+			case 'string':
+			case 'NULL':
+				return settype($data['__ci_value'], $data['__ci_type'])
+					? $data['__ci_value']
+					: FALSE;
+			case 'resource':
+			default:
+				return FALSE;
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Save cache
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data to save
+	 * @param	int	$ttl	Time to live in seconds
+	 * @param	bool	$raw	Whether to store the raw value (unused)
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		switch ($data_type = gettype($data))
+		{
+			case 'array':
+			case 'object':
+				$data = serialize($data);
+				break;
+			case 'boolean':
+			case 'integer':
+			case 'double': // Yes, 'double' is returned and NOT 'float'
+			case 'string':
+			case 'NULL':
+				break;
+			case 'resource':
+			default:
+				return FALSE;
+		}
+
+		if ( ! $this->_redis->hMSet($id, array('__ci_type' => $data_type, '__ci_value' => $data)))
+		{
+			return FALSE;
+		}
+		else
+		{
+			$this->_redis->{static::$_sRemove_name}('_ci_redis_serialized', $id);
+		}
+
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from cache
+	 *
+	 * @param	string	$key	Cache key
+	 * @return	bool
+	 */
+	public function delete($key)
+	{
+		if ($this->_redis->{static::$_delete_name}($key) !== 1)
+		{
+			return FALSE;
+		}
+
+		$this->_redis->{static::$_sRemove_name}('_ci_redis_serialized', $key);
+
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		return $this->_redis->incrBy($id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		return $this->_redis->decrBy($id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean cache
+	 *
+	 * @return	bool
+	 * @see		Redis::flushDB()
+	 */
+	public function clean()
+	{
+		return $this->_redis->flushDB();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get cache driver info
+	 *
+	 * @param	string	$type	Not supported in Redis.
+	 *				Only included in order to offer a
+	 *				consistent cache API.
+	 * @return	array
+	 * @see		Redis::info()
+	 */
+	public function cache_info($type = NULL)
+	{
+		return $this->_redis->info();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get cache metadata
+	 *
+	 * @param	string	$key	Cache key
+	 * @return	array
+	 */
+	public function get_metadata($key)
+	{
+		$value = $this->get($key);
+
+		if ($value !== FALSE)
+		{
+			return array(
+				'expire' => time() + $this->_redis->ttl($key),
+				'data' => $value
+			);
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Check if Redis driver is supported
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		return extension_loaded('redis');
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class destructor
+	 *
+	 * Closes the connection to Redis if present.
+	 *
+	 * @return	void
+	 */
+	public function __destruct()
+	{
+		if ($this->_redis)
+		{
+			$this->_redis->close();
+		}
+	}
+}
diff --git a/system/libraries/Cache/drivers/Cache_wincache.php b/system/libraries/Cache/drivers/Cache_wincache.php
new file mode 100644
index 00000000..703fece7
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_wincache.php
@@ -0,0 +1,217 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Wincache Caching Class
+ *
+ * Read more about Wincache functions here:
+ * https://secure.php.net/manual/en/ref.wincache.php
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		Mike Murkovic
+ * @link
+ */
+class CI_Cache_wincache extends CI_Driver {
+
+	/**
+	 * Class constructor
+	 *
+	 * Only present so that an error message is logged
+	 * if APC is not available.
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		if ( ! $this->is_supported())
+		{
+			log_message('error', 'Cache: Failed to initialize Wincache; extension not loaded/enabled?');
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get
+	 *
+	 * Look for a value in the cache. If it exists, return the data,
+	 * if not, return FALSE
+	 *
+	 * @param	string	$id	Cache Ide
+	 * @return	mixed	Value that is stored/FALSE on failure
+	 */
+	public function get($id)
+	{
+		$success = FALSE;
+		$data = wincache_ucache_get($id, $success);
+
+		// Success returned by reference from wincache_ucache_get()
+		return ($success) ? $data : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Save
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data to store
+	 * @param	int	$ttl	Time to live (in seconds)
+	 * @param	bool	$raw	Whether to store the raw value (unused)
+	 * @return	bool	true on success/false on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		return wincache_ucache_set($id, $data, $ttl);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	unique identifier of the item in the cache
+	 * @return	bool	true on success/false on failure
+	 */
+	public function delete($id)
+	{
+		return wincache_ucache_delete($id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		$success = FALSE;
+		$value = wincache_ucache_inc($id, $offset, $success);
+
+		return ($success === TRUE) ? $value : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		$success = FALSE;
+		$value = wincache_ucache_dec($id, $offset, $success);
+
+		return ($success === TRUE) ? $value : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the cache
+	 *
+	 * @return	bool	false on failure/true on success
+	 */
+	public function clean()
+	{
+		return wincache_ucache_clear();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @return	mixed	array on success, false on failure
+	 */
+	public function cache_info()
+	{
+		return wincache_ucache_info(TRUE);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	key to get cache metadata on
+	 * @return	mixed	array on success/false on failure
+	 */
+	public function get_metadata($id)
+	{
+		if ($stored = wincache_ucache_info(FALSE, $id))
+		{
+			$age = $stored['ucache_entries'][1]['age_seconds'];
+			$ttl = $stored['ucache_entries'][1]['ttl_seconds'];
+			$hitcount = $stored['ucache_entries'][1]['hitcount'];
+
+			return array(
+				'expire'	=> $ttl - $age,
+				'hitcount'	=> $hitcount,
+				'age'		=> $age,
+				'ttl'		=> $ttl
+			);
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * is_supported()
+	 *
+	 * Check to see if WinCache is available on this system, bail if it isn't.
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		return (extension_loaded('wincache') && ini_get('wincache.ucenabled'));
+	}
+}
diff --git a/system/libraries/Cache/drivers/index.html b/system/libraries/Cache/drivers/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/libraries/Cache/drivers/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/libraries/Cache/index.html b/system/libraries/Cache/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/libraries/Cache/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/libraries/Calendar.php b/system/libraries/Calendar.php
new file mode 100644
index 00000000..fcfcf62c
--- /dev/null
+++ b/system/libraries/Calendar.php
@@ -0,0 +1,546 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Calendar Class
+ *
+ * This class enables the creation of calendars
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/calendar.html
+ */
+class CI_Calendar {
+
+	/**
+	 * Calendar layout template
+	 *
+	 * @var mixed
+	 */
+	public $template = '';
+
+	/**
+	 * Replacements array for template
+	 *
+	 * @var array
+	 */
+	public $replacements = array();
+
+	/**
+	 * Day of the week to start the calendar on
+	 *
+	 * @var string
+	 */
+	public $start_day = 'sunday';
+
+	/**
+	 * How to display months
+	 *
+	 * @var string
+	 */
+	public $month_type = 'long';
+
+	/**
+	 * How to display names of days
+	 *
+	 * @var string
+	 */
+	public $day_type = 'abr';
+
+	/**
+	 * Whether to show next/prev month links
+	 *
+	 * @var bool
+	 */
+	public $show_next_prev = FALSE;
+
+	/**
+	 * Url base to use for next/prev month links
+	 *
+	 * @var bool
+	 */
+	public $next_prev_url = '';
+
+	/**
+	 * Show days of other months
+	 *
+	 * @var bool
+	 */
+	public $show_other_days = FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CI Singleton
+	 *
+	 * @var object
+	 */
+	protected $CI;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Loads the calendar language file and sets the default time reference.
+	 *
+	 * @uses	CI_Lang::$is_loaded
+	 *
+	 * @param	array	$config	Calendar options
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		$this->CI =& get_instance();
+		$this->CI->lang->load('calendar');
+
+		empty($config) OR $this->initialize($config);
+
+		log_message('info', 'Calendar Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize the user preferences
+	 *
+	 * Accepts an associative array as input, containing display preferences
+	 *
+	 * @param	array	config preferences
+	 * @return	CI_Calendar
+	 */
+	public function initialize($config = array())
+	{
+		foreach ($config as $key => $val)
+		{
+			if (isset($this->$key))
+			{
+				$this->$key = $val;
+			}
+		}
+
+		// Set the next_prev_url to the controller if required but not defined
+		if ($this->show_next_prev === TRUE && empty($this->next_prev_url))
+		{
+			$this->next_prev_url = $this->CI->config->site_url($this->CI->router->class.'/'.$this->CI->router->method);
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate the calendar
+	 *
+	 * @param	int	the year
+	 * @param	int	the month
+	 * @param	array	the data to be shown in the calendar cells
+	 * @return	string
+	 */
+	public function generate($year = '', $month = '', $data = array())
+	{
+		$local_time = time();
+
+		// Set and validate the supplied month/year
+		if (empty($year))
+		{
+			$year = date('Y', $local_time);
+		}
+		elseif (strlen($year) === 1)
+		{
+			$year = '200'.$year;
+		}
+		elseif (strlen($year) === 2)
+		{
+			$year = '20'.$year;
+		}
+
+		if (empty($month))
+		{
+			$month = date('m', $local_time);
+		}
+		elseif (strlen($month) === 1)
+		{
+			$month = '0'.$month;
+		}
+
+		$adjusted_date = $this->adjust_date($month, $year);
+
+		$month	= $adjusted_date['month'];
+		$year	= $adjusted_date['year'];
+
+		// Determine the total days in the month
+		$total_days = $this->get_total_days($month, $year);
+
+		// Set the starting day of the week
+		$start_days	= array('sunday' => 0, 'monday' => 1, 'tuesday' => 2, 'wednesday' => 3, 'thursday' => 4, 'friday' => 5, 'saturday' => 6);
+		$start_day	= isset($start_days[$this->start_day]) ? $start_days[$this->start_day] : 0;
+
+		// Set the starting day number
+		$local_date = mktime(12, 0, 0, $month, 1, $year);
+		$date = getdate($local_date);
+		$day  = $start_day + 1 - $date['wday'];
+
+		while ($day > 1)
+		{
+			$day -= 7;
+		}
+
+		// Set the current month/year/day
+		// We use this to determine the "today" date
+		$cur_year	= date('Y', $local_time);
+		$cur_month	= date('m', $local_time);
+		$cur_day	= date('j', $local_time);
+
+		$is_current_month = ($cur_year == $year && $cur_month == $month);
+
+		// Generate the template data array
+		$this->parse_template();
+
+		// Begin building the calendar output
+		$out = $this->replacements['table_open']."\n\n".$this->replacements['heading_row_start']."\n";
+
+		// "previous" month link
+		if ($this->show_next_prev === TRUE)
+		{
+			// Add a trailing slash to the URL if needed
+			$this->next_prev_url = preg_replace('/(.+?)\/*$/', '\\1/', $this->next_prev_url);
+
+			$adjusted_date = $this->adjust_date($month - 1, $year);
+			$out .= str_replace('{previous_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->replacements['heading_previous_cell'])."\n";
+		}
+
+		// Heading containing the month/year
+		$colspan = ($this->show_next_prev === TRUE) ? 5 : 7;
+
+		$this->replacements['heading_title_cell'] = str_replace('{colspan}', $colspan,
+								str_replace('{heading}', $this->get_month_name($month).'&nbsp;'.$year, $this->replacements['heading_title_cell']));
+
+		$out .= $this->replacements['heading_title_cell']."\n";
+
+		// "next" month link
+		if ($this->show_next_prev === TRUE)
+		{
+			$adjusted_date = $this->adjust_date($month + 1, $year);
+			$out .= str_replace('{next_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->replacements['heading_next_cell']);
+		}
+
+		$out .= "\n".$this->replacements['heading_row_end']."\n\n"
+			// Write the cells containing the days of the week
+			.$this->replacements['week_row_start']."\n";
+
+		$day_names = $this->get_day_names();
+
+		for ($i = 0; $i < 7; $i ++)
+		{
+			$out .= str_replace('{week_day}', $day_names[($start_day + $i) %7], $this->replacements['week_day_cell']);
+		}
+
+		$out .= "\n".$this->replacements['week_row_end']."\n";
+
+		// Build the main body of the calendar
+		while ($day <= $total_days)
+		{
+			$out .= "\n".$this->replacements['cal_row_start']."\n";
+
+			for ($i = 0; $i < 7; $i++)
+			{
+				if ($day > 0 && $day <= $total_days)
+				{
+					$out .= ($is_current_month === TRUE && $day == $cur_day) ? $this->replacements['cal_cell_start_today'] : $this->replacements['cal_cell_start'];
+
+					if (isset($data[$day]))
+					{
+						// Cells with content
+						$temp = ($is_current_month === TRUE && $day == $cur_day) ?
+								$this->replacements['cal_cell_content_today'] : $this->replacements['cal_cell_content'];
+						$out .= str_replace(array('{content}', '{day}'), array($data[$day], $day), $temp);
+					}
+					else
+					{
+						// Cells with no content
+						$temp = ($is_current_month === TRUE && $day == $cur_day) ?
+								$this->replacements['cal_cell_no_content_today'] : $this->replacements['cal_cell_no_content'];
+						$out .= str_replace('{day}', $day, $temp);
+					}
+
+					$out .= ($is_current_month === TRUE && $day == $cur_day) ? $this->replacements['cal_cell_end_today'] : $this->replacements['cal_cell_end'];
+				}
+				elseif ($this->show_other_days === TRUE)
+				{
+					$out .= $this->replacements['cal_cell_start_other'];
+
+					if ($day <= 0)
+					{
+						// Day of previous month
+						$prev_month = $this->adjust_date($month - 1, $year);
+						$prev_month_days = $this->get_total_days($prev_month['month'], $prev_month['year']);
+						$out .= str_replace('{day}', $prev_month_days + $day, $this->replacements['cal_cell_other']);
+					}
+					else
+					{
+						// Day of next month
+						$out .= str_replace('{day}', $day - $total_days, $this->replacements['cal_cell_other']);
+					}
+
+					$out .= $this->replacements['cal_cell_end_other'];
+				}
+				else
+				{
+					// Blank cells
+					$out .= $this->replacements['cal_cell_start'].$this->replacements['cal_cell_blank'].$this->replacements['cal_cell_end'];
+				}
+
+				$day++;
+			}
+
+			$out .= "\n".$this->replacements['cal_row_end']."\n";
+		}
+
+		return $out .= "\n".$this->replacements['table_close'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Month Name
+	 *
+	 * Generates a textual month name based on the numeric
+	 * month provided.
+	 *
+	 * @param	int	the month
+	 * @return	string
+	 */
+	public function get_month_name($month)
+	{
+		if ($this->month_type === 'short')
+		{
+			$month_names = array('01' => 'cal_jan', '02' => 'cal_feb', '03' => 'cal_mar', '04' => 'cal_apr', '05' => 'cal_may', '06' => 'cal_jun', '07' => 'cal_jul', '08' => 'cal_aug', '09' => 'cal_sep', '10' => 'cal_oct', '11' => 'cal_nov', '12' => 'cal_dec');
+		}
+		else
+		{
+			$month_names = array('01' => 'cal_january', '02' => 'cal_february', '03' => 'cal_march', '04' => 'cal_april', '05' => 'cal_mayl', '06' => 'cal_june', '07' => 'cal_july', '08' => 'cal_august', '09' => 'cal_september', '10' => 'cal_october', '11' => 'cal_november', '12' => 'cal_december');
+		}
+
+		return ($this->CI->lang->line($month_names[$month]) === FALSE)
+			? ucfirst(substr($month_names[$month], 4))
+			: $this->CI->lang->line($month_names[$month]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Day Names
+	 *
+	 * Returns an array of day names (Sunday, Monday, etc.) based
+	 * on the type. Options: long, short, abr
+	 *
+	 * @param	string
+	 * @return	array
+	 */
+	public function get_day_names($day_type = '')
+	{
+		if ($day_type !== '')
+		{
+			$this->day_type = $day_type;
+		}
+
+		if ($this->day_type === 'long')
+		{
+			$day_names = array('sunday', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday');
+		}
+		elseif ($this->day_type === 'short')
+		{
+			$day_names = array('sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat');
+		}
+		else
+		{
+			$day_names = array('su', 'mo', 'tu', 'we', 'th', 'fr', 'sa');
+		}
+
+		$days = array();
+		for ($i = 0, $c = count($day_names); $i < $c; $i++)
+		{
+			$days[] = ($this->CI->lang->line('cal_'.$day_names[$i]) === FALSE) ? ucfirst($day_names[$i]) : $this->CI->lang->line('cal_'.$day_names[$i]);
+		}
+
+		return $days;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Adjust Date
+	 *
+	 * This function makes sure that we have a valid month/year.
+	 * For example, if you submit 13 as the month, the year will
+	 * increment and the month will become January.
+	 *
+	 * @param	int	the month
+	 * @param	int	the year
+	 * @return	array
+	 */
+	public function adjust_date($month, $year)
+	{
+		$date = array();
+
+		$date['month']	= $month;
+		$date['year']	= $year;
+
+		while ($date['month'] > 12)
+		{
+			$date['month'] -= 12;
+			$date['year']++;
+		}
+
+		while ($date['month'] <= 0)
+		{
+			$date['month'] += 12;
+			$date['year']--;
+		}
+
+		if (strlen($date['month']) === 1)
+		{
+			$date['month'] = '0'.$date['month'];
+		}
+
+		return $date;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Total days in a given month
+	 *
+	 * @param	int	the month
+	 * @param	int	the year
+	 * @return	int
+	 */
+	public function get_total_days($month, $year)
+	{
+		$this->CI->load->helper('date');
+		return days_in_month($month, $year);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Default Template Data
+	 *
+	 * This is used in the event that the user has not created their own template
+	 *
+	 * @return	array
+	 */
+	public function default_template()
+	{
+		return array(
+			'table_open'				=> '<table border="0" cellpadding="4" cellspacing="0">',
+			'heading_row_start'			=> '<tr>',
+			'heading_previous_cell'		=> '<th><a href="{previous_url}">&lt;&lt;</a></th>',
+			'heading_title_cell'		=> '<th colspan="{colspan}">{heading}</th>',
+			'heading_next_cell'			=> '<th><a href="{next_url}">&gt;&gt;</a></th>',
+			'heading_row_end'			=> '</tr>',
+			'week_row_start'			=> '<tr>',
+			'week_day_cell'				=> '<td>{week_day}</td>',
+			'week_row_end'				=> '</tr>',
+			'cal_row_start'				=> '<tr>',
+			'cal_cell_start'			=> '<td>',
+			'cal_cell_start_today'		=> '<td>',
+			'cal_cell_start_other'		=> '<td style="color: #666;">',
+			'cal_cell_content'			=> '<a href="{content}">{day}</a>',
+			'cal_cell_content_today'	=> '<a href="{content}"><strong>{day}</strong></a>',
+			'cal_cell_no_content'		=> '{day}',
+			'cal_cell_no_content_today'	=> '<strong>{day}</strong>',
+			'cal_cell_blank'			=> '&nbsp;',
+			'cal_cell_other'			=> '{day}',
+			'cal_cell_end'				=> '</td>',
+			'cal_cell_end_today'		=> '</td>',
+			'cal_cell_end_other'		=> '</td>',
+			'cal_row_end'				=> '</tr>',
+			'table_close'				=> '</table>'
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse Template
+	 *
+	 * Harvests the data within the template {pseudo-variables}
+	 * used to display the calendar
+	 *
+	 * @return	CI_Calendar
+	 */
+	public function parse_template()
+	{
+		$this->replacements = $this->default_template();
+
+		if (empty($this->template))
+		{
+			return $this;
+		}
+
+		if (is_string($this->template))
+		{
+			$today = array('cal_cell_start_today', 'cal_cell_content_today', 'cal_cell_no_content_today', 'cal_cell_end_today');
+
+			foreach (array('table_open', 'table_close', 'heading_row_start', 'heading_previous_cell', 'heading_title_cell', 'heading_next_cell', 'heading_row_end', 'week_row_start', 'week_day_cell', 'week_row_end', 'cal_row_start', 'cal_cell_start', 'cal_cell_content', 'cal_cell_no_content', 'cal_cell_blank', 'cal_cell_end', 'cal_row_end', 'cal_cell_start_today', 'cal_cell_content_today', 'cal_cell_no_content_today', 'cal_cell_end_today', 'cal_cell_start_other', 'cal_cell_other', 'cal_cell_end_other') as $val)
+			{
+				if (preg_match('/\{'.$val.'\}(.*?)\{\/'.$val.'\}/si', $this->template, $match))
+				{
+					$this->replacements[$val] = $match[1];
+				}
+				elseif (in_array($val, $today, TRUE))
+				{
+					$this->replacements[$val] = $this->replacements[substr($val, 0, -6)];
+				}
+			}
+		}
+		elseif (is_array($this->template))
+		{
+			$this->replacements = array_merge($this->replacements, $this->template);
+		}
+
+		return $this;
+	}
+
+}
diff --git a/system/libraries/Driver.php b/system/libraries/Driver.php
new file mode 100644
index 00000000..7e6cf4fa
--- /dev/null
+++ b/system/libraries/Driver.php
@@ -0,0 +1,342 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Driver Library Class
+ *
+ * This class enables you to create "Driver" libraries that add runtime ability
+ * to extend the capabilities of a class via additional driver objects
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Driver_Library {
+
+	/**
+	 * Array of drivers that are available to use with the driver class
+	 *
+	 * @var array
+	 */
+	protected $valid_drivers = array();
+
+	/**
+	 * Name of the current class - usually the driver class
+	 *
+	 * @var string
+	 */
+	protected $lib_name;
+
+	/**
+	 * Get magic method
+	 *
+	 * The first time a child is used it won't exist, so we instantiate it
+	 * subsequents calls will go straight to the proper child.
+	 *
+	 * @param	string	Child class name
+	 * @return	object	Child class
+	 */
+	public function __get($child)
+	{
+		// Try to load the driver
+		return $this->load_driver($child);
+	}
+
+	/**
+	 * Load driver
+	 *
+	 * Separate load_driver call to support explicit driver load by library or user
+	 *
+	 * @param	string	Driver name (w/o parent prefix)
+	 * @return	object	Child class
+	 */
+	public function load_driver($child)
+	{
+		// Get CodeIgniter instance and subclass prefix
+		$prefix = config_item('subclass_prefix');
+
+		if ( ! isset($this->lib_name))
+		{
+			// Get library name without any prefix
+			$this->lib_name = str_replace(array('CI_', $prefix), '', get_class($this));
+		}
+
+		// The child will be prefixed with the parent lib
+		$child_name = $this->lib_name.'_'.$child;
+
+		// See if requested child is a valid driver
+		if ( ! in_array($child, $this->valid_drivers))
+		{
+			// The requested driver isn't valid!
+			$msg = 'Invalid driver requested: '.$child_name;
+			log_message('error', $msg);
+			show_error($msg);
+		}
+
+		// Get package paths and filename case variations to search
+		$CI = get_instance();
+		$paths = $CI->load->get_package_paths(TRUE);
+
+		// Is there an extension?
+		$class_name = $prefix.$child_name;
+		$found = class_exists($class_name, FALSE);
+		if ( ! $found)
+		{
+			// Check for subclass file
+			foreach ($paths as $path)
+			{
+				// Does the file exist?
+				$file = $path.'libraries/'.$this->lib_name.'/drivers/'.$prefix.$child_name.'.php';
+				if (file_exists($file))
+				{
+					// Yes - require base class from BASEPATH
+					$basepath = BASEPATH.'libraries/'.$this->lib_name.'/drivers/'.$child_name.'.php';
+					if ( ! file_exists($basepath))
+					{
+						$msg = 'Unable to load the requested class: CI_'.$child_name;
+						log_message('error', $msg);
+						show_error($msg);
+					}
+
+					// Include both sources and mark found
+					include_once($basepath);
+					include_once($file);
+					$found = TRUE;
+					break;
+				}
+			}
+		}
+
+		// Do we need to search for the class?
+		if ( ! $found)
+		{
+			// Use standard class name
+			$class_name = 'CI_'.$child_name;
+			if ( ! class_exists($class_name, FALSE))
+			{
+				// Check package paths
+				foreach ($paths as $path)
+				{
+					// Does the file exist?
+					$file = $path.'libraries/'.$this->lib_name.'/drivers/'.$child_name.'.php';
+					if (file_exists($file))
+					{
+						// Include source
+						include_once($file);
+						break;
+					}
+				}
+			}
+		}
+
+		// Did we finally find the class?
+		if ( ! class_exists($class_name, FALSE))
+		{
+			if (class_exists($child_name, FALSE))
+			{
+				$class_name = $child_name;
+			}
+			else
+			{
+				$msg = 'Unable to load the requested driver: '.$class_name;
+				log_message('error', $msg);
+				show_error($msg);
+			}
+		}
+
+		// Instantiate, decorate and add child
+		$obj = new $class_name();
+		$obj->decorate($this);
+		$this->$child = $obj;
+		return $this->$child;
+	}
+
+}
+
+// --------------------------------------------------------------------------
+
+/**
+ * CodeIgniter Driver Class
+ *
+ * This class enables you to create drivers for a Library based on the Driver Library.
+ * It handles the drivers' access to the parent library
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Driver {
+
+	/**
+	 * Instance of the parent class
+	 *
+	 * @var object
+	 */
+	protected $_parent;
+
+	/**
+	 * List of methods in the parent class
+	 *
+	 * @var array
+	 */
+	protected $_methods = array();
+
+	/**
+	 * List of properties in the parent class
+	 *
+	 * @var array
+	 */
+	protected $_properties = array();
+
+	/**
+	 * Array of methods and properties for the parent class(es)
+	 *
+	 * @static
+	 * @var	array
+	 */
+	protected static $_reflections = array();
+
+	/**
+	 * Decorate
+	 *
+	 * Decorates the child with the parent driver lib's methods and properties
+	 *
+	 * @param	object
+	 * @return	void
+	 */
+	public function decorate($parent)
+	{
+		$this->_parent = $parent;
+
+		// Lock down attributes to what is defined in the class
+		// and speed up references in magic methods
+
+		$class_name = get_class($parent);
+
+		if ( ! isset(self::$_reflections[$class_name]))
+		{
+			$r = new ReflectionObject($parent);
+
+			foreach ($r->getMethods() as $method)
+			{
+				if ($method->isPublic())
+				{
+					$this->_methods[] = $method->getName();
+				}
+			}
+
+			foreach ($r->getProperties() as $prop)
+			{
+				if ($prop->isPublic())
+				{
+					$this->_properties[] = $prop->getName();
+				}
+			}
+
+			self::$_reflections[$class_name] = array($this->_methods, $this->_properties);
+		}
+		else
+		{
+			list($this->_methods, $this->_properties) = self::$_reflections[$class_name];
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * __call magic method
+	 *
+	 * Handles access to the parent driver library's methods
+	 *
+	 * @param	string
+	 * @param	array
+	 * @return	mixed
+	 */
+	public function __call($method, $args = array())
+	{
+		if (in_array($method, $this->_methods))
+		{
+			return call_user_func_array(array($this->_parent, $method), $args);
+		}
+
+		throw new BadMethodCallException('No such method: '.$method.'()');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * __get magic method
+	 *
+	 * Handles reading of the parent driver library's properties
+	 *
+	 * @param	string
+	 * @return	mixed
+	 */
+	public function __get($var)
+	{
+		if (in_array($var, $this->_properties))
+		{
+			return $this->_parent->$var;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * __set magic method
+	 *
+	 * Handles writing to the parent driver library's properties
+	 *
+	 * @param	string
+	 * @param	array
+	 * @return	mixed
+	 */
+	public function __set($var, $val)
+	{
+		if (in_array($var, $this->_properties))
+		{
+			$this->_parent->$var = $val;
+		}
+	}
+
+}
diff --git a/system/libraries/Email.php b/system/libraries/Email.php
new file mode 100644
index 00000000..01f513b2
--- /dev/null
+++ b/system/libraries/Email.php
@@ -0,0 +1,2417 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Email Class
+ *
+ * Permits email to be sent using Mail, Sendmail, or SMTP.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/email.html
+ */
+class CI_Email {
+
+	/**
+	 * Used as the User-Agent and X-Mailer headers' value.
+	 *
+	 * @var	string
+	 */
+	public $useragent	= 'CodeIgniter';
+
+	/**
+	 * Path to the Sendmail binary.
+	 *
+	 * @var	string
+	 */
+	public $mailpath	= '/usr/sbin/sendmail';	// Sendmail path
+
+	/**
+	 * Which method to use for sending e-mails.
+	 *
+	 * @var	string	'mail', 'sendmail' or 'smtp'
+	 */
+	public $protocol	= 'mail';		// mail/sendmail/smtp
+
+	/**
+	 * STMP Server host
+	 *
+	 * @var	string
+	 */
+	public $smtp_host	= '';
+
+	/**
+	 * SMTP Username
+	 *
+	 * @var	string
+	 */
+	public $smtp_user	= '';
+
+	/**
+	 * SMTP Password
+	 *
+	 * @var	string
+	 */
+	public $smtp_pass	= '';
+
+	/**
+	 * SMTP Server port
+	 *
+	 * @var	int
+	 */
+	public $smtp_port	= 25;
+
+	/**
+	 * SMTP connection timeout in seconds
+	 *
+	 * @var	int
+	 */
+	public $smtp_timeout	= 5;
+
+	/**
+	 * SMTP persistent connection
+	 *
+	 * @var	bool
+	 */
+	public $smtp_keepalive	= FALSE;
+
+	/**
+	 * SMTP Encryption
+	 *
+	 * @var	string	empty, 'tls' or 'ssl'
+	 */
+	public $smtp_crypto	= '';
+
+	/**
+	 * Whether to apply word-wrapping to the message body.
+	 *
+	 * @var	bool
+	 */
+	public $wordwrap	= TRUE;
+
+	/**
+	 * Number of characters to wrap at.
+	 *
+	 * @see	CI_Email::$wordwrap
+	 * @var	int
+	 */
+	public $wrapchars	= 76;
+
+	/**
+	 * Message format.
+	 *
+	 * @var	string	'text' or 'html'
+	 */
+	public $mailtype	= 'text';
+
+	/**
+	 * Character set (default: utf-8)
+	 *
+	 * @var	string
+	 */
+	public $charset		= 'utf-8';
+
+	/**
+	 * Alternative message (for HTML messages only)
+	 *
+	 * @var	string
+	 */
+	public $alt_message	= '';
+
+	/**
+	 * Whether to validate e-mail addresses.
+	 *
+	 * @var	bool
+	 */
+	public $validate	= TRUE;
+
+	/**
+	 * X-Priority header value.
+	 *
+	 * @var	int	1-5
+	 */
+	public $priority	= 3;			// Default priority (1 - 5)
+
+	/**
+	 * Newline character sequence.
+	 * Use "\r\n" to comply with RFC 822.
+	 *
+	 * @link	https://www.ietf.org/rfc/rfc822.txt
+	 * @var	string	"\r\n" or "\n"
+	 */
+	public $newline		= "\n";			// Default newline. "\r\n" or "\n" (Use "\r\n" to comply with RFC 822)
+
+	/**
+	 * CRLF character sequence
+	 *
+	 * RFC 2045 specifies that for 'quoted-printable' encoding,
+	 * "\r\n" must be used. However, it appears that some servers
+	 * (even on the receiving end) don't handle it properly and
+	 * switching to "\n", while improper, is the only solution
+	 * that seems to work for all environments.
+	 *
+	 * @link	https://www.ietf.org/rfc/rfc822.txt
+	 * @var	string
+	 */
+	public $crlf		= "\n";
+
+	/**
+	 * Whether to use Delivery Status Notification.
+	 *
+	 * @var	bool
+	 */
+	public $dsn		= FALSE;
+
+	/**
+	 * Whether to send multipart alternatives.
+	 * Yahoo! doesn't seem to like these.
+	 *
+	 * @var	bool
+	 */
+	public $send_multipart	= TRUE;
+
+	/**
+	 * Whether to send messages to BCC recipients in batches.
+	 *
+	 * @var	bool
+	 */
+	public $bcc_batch_mode	= FALSE;
+
+	/**
+	 * BCC Batch max number size.
+	 *
+	 * @see	CI_Email::$bcc_batch_mode
+	 * @var	int
+	 */
+	public $bcc_batch_size	= 200;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Subject header
+	 *
+	 * @var	string
+	 */
+	protected $_subject		= '';
+
+	/**
+	 * Message body
+	 *
+	 * @var	string
+	 */
+	protected $_body		= '';
+
+	/**
+	 * Final message body to be sent.
+	 *
+	 * @var	string
+	 */
+	protected $_finalbody		= '';
+
+	/**
+	 * Final headers to send
+	 *
+	 * @var	string
+	 */
+	protected $_header_str		= '';
+
+	/**
+	 * SMTP Connection socket placeholder
+	 *
+	 * @var	resource
+	 */
+	protected $_smtp_connect	= '';
+
+	/**
+	 * Mail encoding
+	 *
+	 * @var	string	'8bit' or '7bit'
+	 */
+	protected $_encoding		= '8bit';
+
+	/**
+	 * Whether to perform SMTP authentication
+	 *
+	 * @var	bool
+	 */
+	protected $_smtp_auth		= FALSE;
+
+	/**
+	 * Whether to send a Reply-To header
+	 *
+	 * @var	bool
+	 */
+	protected $_replyto_flag	= FALSE;
+
+	/**
+	 * Debug messages
+	 *
+	 * @see	CI_Email::print_debugger()
+	 * @var	string
+	 */
+	protected $_debug_msg		= array();
+
+	/**
+	 * Recipients
+	 *
+	 * @var	string[]
+	 */
+	protected $_recipients		= array();
+
+	/**
+	 * CC Recipients
+	 *
+	 * @var	string[]
+	 */
+	protected $_cc_array		= array();
+
+	/**
+	 * BCC Recipients
+	 *
+	 * @var	string[]
+	 */
+	protected $_bcc_array		= array();
+
+	/**
+	 * Message headers
+	 *
+	 * @var	string[]
+	 */
+	protected $_headers		= array();
+
+	/**
+	 * Attachment data
+	 *
+	 * @var	array
+	 */
+	protected $_attachments		= array();
+
+	/**
+	 * Valid $protocol values
+	 *
+	 * @see	CI_Email::$protocol
+	 * @var	string[]
+	 */
+	protected $_protocols		= array('mail', 'sendmail', 'smtp');
+
+	/**
+	 * Base charsets
+	 *
+	 * Character sets valid for 7-bit encoding,
+	 * excluding language suffix.
+	 *
+	 * @var	string[]
+	 */
+	protected $_base_charsets	= array('us-ascii', 'iso-2022-');
+
+	/**
+	 * Bit depths
+	 *
+	 * Valid mail encodings
+	 *
+	 * @see	CI_Email::$_encoding
+	 * @var	string[]
+	 */
+	protected $_bit_depths		= array('7bit', '8bit');
+
+	/**
+	 * $priority translations
+	 *
+	 * Actual values to send with the X-Priority header
+	 *
+	 * @var	string[]
+	 */
+	protected $_priorities = array(
+		1 => '1 (Highest)',
+		2 => '2 (High)',
+		3 => '3 (Normal)',
+		4 => '4 (Low)',
+		5 => '5 (Lowest)'
+	);
+
+	/**
+	 * mbstring.func_overload flag
+	 *
+	 * @var	bool
+	 */
+	protected static $func_overload;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor - Sets Email Preferences
+	 *
+	 * The constructor can be passed an array of config values
+	 *
+	 * @param	array	$config = array()
+	 * @return	void
+	 */
+	public function __construct(array $config = array())
+	{
+		$this->charset = config_item('charset');
+		$this->initialize($config);
+
+		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+
+		log_message('info', 'Email Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize preferences
+	 *
+	 * @param	array	$config
+	 * @return	CI_Email
+	 */
+	public function initialize(array $config = array())
+	{
+		$this->clear();
+
+		foreach ($config as $key => $val)
+		{
+			if (isset($this->$key))
+			{
+				$method = 'set_'.$key;
+
+				if (method_exists($this, $method))
+				{
+					$this->$method($val);
+				}
+				else
+				{
+					$this->$key = $val;
+				}
+			}
+		}
+
+		$this->charset = strtoupper($this->charset);
+		$this->_smtp_auth = isset($this->smtp_user[0], $this->smtp_pass[0]);
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize the Email Data
+	 *
+	 * @param	bool
+	 * @return	CI_Email
+	 */
+	public function clear($clear_attachments = FALSE)
+	{
+		$this->_subject		= '';
+		$this->_body		= '';
+		$this->_finalbody	= '';
+		$this->_header_str	= '';
+		$this->_replyto_flag	= FALSE;
+		$this->_recipients	= array();
+		$this->_cc_array	= array();
+		$this->_bcc_array	= array();
+		$this->_headers		= array();
+		$this->_debug_msg	= array();
+
+		$this->set_header('Date', $this->_set_date());
+
+		if ($clear_attachments !== FALSE)
+		{
+			$this->_attachments = array();
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set FROM
+	 *
+	 * @param	string	$from
+	 * @param	string	$name
+	 * @param	string	$return_path = NULL	Return-Path
+	 * @return	CI_Email
+	 */
+	public function from($from, $name = '', $return_path = NULL)
+	{
+		if (preg_match('/\<(.*)\>/', $from, $match))
+		{
+			$from = $match[1];
+		}
+
+		if ($this->validate)
+		{
+			$this->validate_email($this->_str_to_array($from));
+			if ($return_path)
+			{
+				$this->validate_email($this->_str_to_array($return_path));
+			}
+		}
+
+		// prepare the display name
+		if ($name !== '')
+		{
+			// only use Q encoding if there are characters that would require it
+			if ( ! preg_match('/[\200-\377]/', $name))
+			{
+				// add slashes for non-printing characters, slashes, and double quotes, and surround it in double quotes
+				$name = '"'.addcslashes($name, "\0..\37\177'\"\\").'"';
+			}
+			else
+			{
+				$name = $this->_prep_q_encoding($name);
+			}
+		}
+
+		$this->set_header('From', $name.' <'.$from.'>');
+
+		isset($return_path) OR $return_path = $from;
+		$this->set_header('Return-Path', '<'.$return_path.'>');
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Reply-to
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function reply_to($replyto, $name = '')
+	{
+		if (preg_match('/\<(.*)\>/', $replyto, $match))
+		{
+			$replyto = $match[1];
+		}
+
+		if ($this->validate)
+		{
+			$this->validate_email($this->_str_to_array($replyto));
+		}
+
+		if ($name !== '')
+		{
+			// only use Q encoding if there are characters that would require it
+			if ( ! preg_match('/[\200-\377]/', $name))
+			{
+				// add slashes for non-printing characters, slashes, and double quotes, and surround it in double quotes
+				$name = '"'.addcslashes($name, "\0..\37\177'\"\\").'"';
+			}
+			else
+			{
+				$name = $this->_prep_q_encoding($name);
+			}
+		}
+
+		$this->set_header('Reply-To', $name.' <'.$replyto.'>');
+		$this->_replyto_flag = TRUE;
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Recipients
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function to($to)
+	{
+		$to = $this->_str_to_array($to);
+		$to = $this->clean_email($to);
+
+		if ($this->validate)
+		{
+			$this->validate_email($to);
+		}
+
+		if ($this->_get_protocol() !== 'mail')
+		{
+			$this->set_header('To', implode(', ', $to));
+		}
+
+		$this->_recipients = $to;
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set CC
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function cc($cc)
+	{
+		$cc = $this->clean_email($this->_str_to_array($cc));
+
+		if ($this->validate)
+		{
+			$this->validate_email($cc);
+		}
+
+		$this->set_header('Cc', implode(', ', $cc));
+
+		if ($this->_get_protocol() === 'smtp')
+		{
+			$this->_cc_array = $cc;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set BCC
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function bcc($bcc, $limit = '')
+	{
+		if ($limit !== '' && is_numeric($limit))
+		{
+			$this->bcc_batch_mode = TRUE;
+			$this->bcc_batch_size = $limit;
+		}
+
+		$bcc = $this->clean_email($this->_str_to_array($bcc));
+
+		if ($this->validate)
+		{
+			$this->validate_email($bcc);
+		}
+
+		if ($this->_get_protocol() === 'smtp' OR ($this->bcc_batch_mode && count($bcc) > $this->bcc_batch_size))
+		{
+			$this->_bcc_array = $bcc;
+		}
+		else
+		{
+			$this->set_header('Bcc', implode(', ', $bcc));
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Email Subject
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function subject($subject)
+	{
+		$subject = $this->_prep_q_encoding($subject);
+		$this->set_header('Subject', $subject);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Body
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function message($body)
+	{
+		$this->_body = rtrim(str_replace("\r", '', $body));
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Assign file attachments
+	 *
+	 * @param	string	$file	Can be local path, URL or buffered content
+	 * @param	string	$disposition = 'attachment'
+	 * @param	string	$newname = NULL
+	 * @param	string	$mime = ''
+	 * @return	CI_Email
+	 */
+	public function attach($file, $disposition = '', $newname = NULL, $mime = '')
+	{
+		if ($mime === '')
+		{
+			if (strpos($file, '://') === FALSE && ! file_exists($file))
+			{
+				$this->_set_error_message('lang:email_attachment_missing', $file);
+				return FALSE;
+			}
+
+			if ( ! $fp = @fopen($file, 'rb'))
+			{
+				$this->_set_error_message('lang:email_attachment_unreadable', $file);
+				return FALSE;
+			}
+
+			$file_content = stream_get_contents($fp);
+			$mime = $this->_mime_types(pathinfo($file, PATHINFO_EXTENSION));
+			fclose($fp);
+		}
+		else
+		{
+			$file_content =& $file; // buffered file
+		}
+
+		$this->_attachments[] = array(
+			'name'		=> array($file, $newname),
+			'disposition'	=> empty($disposition) ? 'attachment' : $disposition,  // Can also be 'inline'  Not sure if it matters
+			'type'		=> $mime,
+			'content'	=> chunk_split(base64_encode($file_content)),
+			'multipart'	=> 'mixed'
+		);
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set and return attachment Content-ID
+	 *
+	 * Useful for attached inline pictures
+	 *
+	 * @param	string	$filename
+	 * @return	string
+	 */
+	public function attachment_cid($filename)
+	{
+		for ($i = 0, $c = count($this->_attachments); $i < $c; $i++)
+		{
+			if ($this->_attachments[$i]['name'][0] === $filename)
+			{
+				$this->_attachments[$i]['multipart'] = 'related';
+				$this->_attachments[$i]['cid'] = uniqid(basename($this->_attachments[$i]['name'][0]).'@');
+				return $this->_attachments[$i]['cid'];
+			}
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add a Header Item
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function set_header($header, $value)
+	{
+		$this->_headers[$header] = str_replace(array("\n", "\r"), '', $value);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Convert a String to an Array
+	 *
+	 * @param	string
+	 * @return	array
+	 */
+	protected function _str_to_array($email)
+	{
+		if ( ! is_array($email))
+		{
+			return (strpos($email, ',') !== FALSE)
+				? preg_split('/[\s,]/', $email, -1, PREG_SPLIT_NO_EMPTY)
+				: (array) trim($email);
+		}
+
+		return $email;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Multipart Value
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function set_alt_message($str)
+	{
+		$this->alt_message = (string) $str;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Mailtype
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function set_mailtype($type = 'text')
+	{
+		$this->mailtype = ($type === 'html') ? 'html' : 'text';
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Wordwrap
+	 *
+	 * @param	bool
+	 * @return	CI_Email
+	 */
+	public function set_wordwrap($wordwrap = TRUE)
+	{
+		$this->wordwrap = (bool) $wordwrap;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Protocol
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function set_protocol($protocol = 'mail')
+	{
+		$this->protocol = in_array($protocol, $this->_protocols, TRUE) ? strtolower($protocol) : 'mail';
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Priority
+	 *
+	 * @param	int
+	 * @return	CI_Email
+	 */
+	public function set_priority($n = 3)
+	{
+		$this->priority = preg_match('/^[1-5]$/', $n) ? (int) $n : 3;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Newline Character
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function set_newline($newline = "\n")
+	{
+		$this->newline = in_array($newline, array("\n", "\r\n", "\r")) ? $newline : "\n";
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set CRLF
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function set_crlf($crlf = "\n")
+	{
+		$this->crlf = ($crlf !== "\n" && $crlf !== "\r\n" && $crlf !== "\r") ? "\n" : $crlf;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the Message ID
+	 *
+	 * @return	string
+	 */
+	protected function _get_message_id()
+	{
+		$from = str_replace(array('>', '<'), '', $this->_headers['Return-Path']);
+		return '<'.uniqid('').strstr($from, '@').'>';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Mail Protocol
+	 *
+	 * @return	mixed
+	 */
+	protected function _get_protocol()
+	{
+		$this->protocol = strtolower($this->protocol);
+		in_array($this->protocol, $this->_protocols, TRUE) OR $this->protocol = 'mail';
+		return $this->protocol;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Mail Encoding
+	 *
+	 * @return	string
+	 */
+	protected function _get_encoding()
+	{
+		in_array($this->_encoding, $this->_bit_depths) OR $this->_encoding = '8bit';
+
+		foreach ($this->_base_charsets as $charset)
+		{
+			if (strpos($this->charset, $charset) === 0)
+			{
+				$this->_encoding = '7bit';
+			}
+		}
+
+		return $this->_encoding;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get content type (text/html/attachment)
+	 *
+	 * @return	string
+	 */
+	protected function _get_content_type()
+	{
+		if ($this->mailtype === 'html')
+		{
+			return empty($this->_attachments) ? 'html' : 'html-attach';
+		}
+		elseif	($this->mailtype === 'text' && ! empty($this->_attachments))
+		{
+			return 'plain-attach';
+		}
+
+		return 'plain';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set RFC 822 Date
+	 *
+	 * @return	string
+	 */
+	protected function _set_date()
+	{
+		$timezone = date('Z');
+		$operator = ($timezone[0] === '-') ? '-' : '+';
+		$timezone = abs($timezone);
+		$timezone = floor($timezone/3600) * 100 + ($timezone % 3600) / 60;
+
+		return sprintf('%s %s%04d', date('D, j M Y H:i:s'), $operator, $timezone);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Mime message
+	 *
+	 * @return	string
+	 */
+	protected function _get_mime_message()
+	{
+		return 'This is a multi-part message in MIME format.'.$this->newline.'Your email application may not support this format.';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate Email Address
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function validate_email($email)
+	{
+		if ( ! is_array($email))
+		{
+			$this->_set_error_message('lang:email_must_be_array');
+			return FALSE;
+		}
+
+		foreach ($email as $val)
+		{
+			if ( ! $this->valid_email($val))
+			{
+				$this->_set_error_message('lang:email_invalid_address', $val);
+				return FALSE;
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Email Validation
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function valid_email($email)
+	{
+		if (function_exists('idn_to_ascii') && preg_match('#\A([^@]+)@(.+)\z#', $email, $matches))
+		{
+			$domain = defined('INTL_IDNA_VARIANT_UTS46')
+				? idn_to_ascii($matches[2], 0, INTL_IDNA_VARIANT_UTS46)
+				: idn_to_ascii($matches[2]);
+
+			if ($domain !== FALSE)
+			{
+				$email = $matches[1].'@'.$domain;
+			}
+		}
+
+		return (bool) filter_var($email, FILTER_VALIDATE_EMAIL);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Clean Extended Email Address: Joe Smith <joe@smith.com>
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function clean_email($email)
+	{
+		if ( ! is_array($email))
+		{
+			return preg_match('/\<(.*)\>/', $email, $match) ? $match[1] : $email;
+		}
+
+		$clean_email = array();
+
+		foreach ($email as $addy)
+		{
+			$clean_email[] = preg_match('/\<(.*)\>/', $addy, $match) ? $match[1] : $addy;
+		}
+
+		return $clean_email;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Build alternative plain text message
+	 *
+	 * Provides the raw message for use in plain-text headers of
+	 * HTML-formatted emails.
+	 * If the user hasn't specified his own alternative message
+	 * it creates one by stripping the HTML
+	 *
+	 * @return	string
+	 */
+	protected function _get_alt_message()
+	{
+		if ( ! empty($this->alt_message))
+		{
+			return ($this->wordwrap)
+				? $this->word_wrap($this->alt_message, 76)
+				: $this->alt_message;
+		}
+
+		$body = preg_match('/\<body.*?\>(.*)\<\/body\>/si', $this->_body, $match) ? $match[1] : $this->_body;
+		$body = str_replace("\t", '', preg_replace('#<!--(.*)--\>#', '', trim(strip_tags($body))));
+
+		for ($i = 20; $i >= 3; $i--)
+		{
+			$body = str_replace(str_repeat("\n", $i), "\n\n", $body);
+		}
+
+		// Reduce multiple spaces
+		$body = preg_replace('| +|', ' ', $body);
+
+		return ($this->wordwrap)
+			? $this->word_wrap($body, 76)
+			: $body;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Word Wrap
+	 *
+	 * @param	string
+	 * @param	int	line-length limit
+	 * @return	string
+	 */
+	public function word_wrap($str, $charlim = NULL)
+	{
+		// Set the character limit, if not already present
+		if (empty($charlim))
+		{
+			$charlim = empty($this->wrapchars) ? 76 : $this->wrapchars;
+		}
+
+		// Standardize newlines
+		if (strpos($str, "\r") !== FALSE)
+		{
+			$str = str_replace(array("\r\n", "\r"), "\n", $str);
+		}
+
+		// Reduce multiple spaces at end of line
+		$str = preg_replace('| +\n|', "\n", $str);
+
+		// If the current word is surrounded by {unwrap} tags we'll
+		// strip the entire chunk and replace it with a marker.
+		$unwrap = array();
+		if (preg_match_all('|\{unwrap\}(.+?)\{/unwrap\}|s', $str, $matches))
+		{
+			for ($i = 0, $c = count($matches[0]); $i < $c; $i++)
+			{
+				$unwrap[] = $matches[1][$i];
+				$str = str_replace($matches[0][$i], '{{unwrapped'.$i.'}}', $str);
+			}
+		}
+
+		// Use PHP's native function to do the initial wordwrap.
+		// We set the cut flag to FALSE so that any individual words that are
+		// too long get left alone. In the next step we'll deal with them.
+		$str = wordwrap($str, $charlim, "\n", FALSE);
+
+		// Split the string into individual lines of text and cycle through them
+		$output = '';
+		foreach (explode("\n", $str) as $line)
+		{
+			// Is the line within the allowed character count?
+			// If so we'll join it to the output and continue
+			if (self::strlen($line) <= $charlim)
+			{
+				$output .= $line.$this->newline;
+				continue;
+			}
+
+			$temp = '';
+			do
+			{
+				// If the over-length word is a URL we won't wrap it
+				if (preg_match('!\[url.+\]|://|www\.!', $line))
+				{
+					break;
+				}
+
+				// Trim the word down
+				$temp .= self::substr($line, 0, $charlim - 1);
+				$line = self::substr($line, $charlim - 1);
+			}
+			while (self::strlen($line) > $charlim);
+
+			// If $temp contains data it means we had to split up an over-length
+			// word into smaller chunks so we'll add it back to our current line
+			if ($temp !== '')
+			{
+				$output .= $temp.$this->newline;
+			}
+
+			$output .= $line.$this->newline;
+		}
+
+		// Put our markers back
+		if (count($unwrap) > 0)
+		{
+			foreach ($unwrap as $key => $val)
+			{
+				$output = str_replace('{{unwrapped'.$key.'}}', $val, $output);
+			}
+		}
+
+		return $output;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Build final headers
+	 *
+	 * @return	void
+	 */
+	protected function _build_headers()
+	{
+		$this->set_header('User-Agent', $this->useragent);
+		$this->set_header('X-Sender', $this->clean_email($this->_headers['From']));
+		$this->set_header('X-Mailer', $this->useragent);
+		$this->set_header('X-Priority', $this->_priorities[$this->priority]);
+		$this->set_header('Message-ID', $this->_get_message_id());
+		$this->set_header('Mime-Version', '1.0');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Write Headers as a string
+	 *
+	 * @return	void
+	 */
+	protected function _write_headers()
+	{
+		if ($this->protocol === 'mail')
+		{
+			if (isset($this->_headers['Subject']))
+			{
+				$this->_subject = $this->_headers['Subject'];
+				unset($this->_headers['Subject']);
+			}
+		}
+
+		reset($this->_headers);
+		$this->_header_str = '';
+
+		foreach ($this->_headers as $key => $val)
+		{
+			$val = trim($val);
+
+			if ($val !== '')
+			{
+				$this->_header_str .= $key.': '.$val.$this->newline;
+			}
+		}
+
+		if ($this->_get_protocol() === 'mail')
+		{
+			$this->_header_str = rtrim($this->_header_str);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Build Final Body and attachments
+	 *
+	 * @return	void
+	 */
+	protected function _build_message()
+	{
+		if ($this->wordwrap === TRUE && $this->mailtype !== 'html')
+		{
+			$this->_body = $this->word_wrap($this->_body);
+		}
+
+		$this->_write_headers();
+
+		$hdr = ($this->_get_protocol() === 'mail') ? $this->newline : '';
+		$body = '';
+
+		switch ($this->_get_content_type())
+		{
+			case 'plain':
+
+				$hdr .= 'Content-Type: text/plain; charset='.$this->charset.$this->newline
+					.'Content-Transfer-Encoding: '.$this->_get_encoding();
+
+				if ($this->_get_protocol() === 'mail')
+				{
+					$this->_header_str .= $hdr;
+					$this->_finalbody = $this->_body;
+				}
+				else
+				{
+					$this->_finalbody = $hdr.$this->newline.$this->newline.$this->_body;
+				}
+
+				return;
+
+			case 'html':
+
+				if ($this->send_multipart === FALSE)
+				{
+					$hdr .= 'Content-Type: text/html; charset='.$this->charset.$this->newline
+						.'Content-Transfer-Encoding: quoted-printable';
+				}
+				else
+				{
+					$boundary = uniqid('B_ALT_');
+					$hdr .= 'Content-Type: multipart/alternative; boundary="'.$boundary.'"';
+
+					$body .= $this->_get_mime_message().$this->newline.$this->newline
+						.'--'.$boundary.$this->newline
+
+						.'Content-Type: text/plain; charset='.$this->charset.$this->newline
+						.'Content-Transfer-Encoding: '.$this->_get_encoding().$this->newline.$this->newline
+						.$this->_get_alt_message().$this->newline.$this->newline
+						.'--'.$boundary.$this->newline
+
+						.'Content-Type: text/html; charset='.$this->charset.$this->newline
+						.'Content-Transfer-Encoding: quoted-printable'.$this->newline.$this->newline;
+				}
+
+				$this->_finalbody = $body.$this->_prep_quoted_printable($this->_body).$this->newline.$this->newline;
+
+				if ($this->_get_protocol() === 'mail')
+				{
+					$this->_header_str .= $hdr;
+				}
+				else
+				{
+					$this->_finalbody = $hdr.$this->newline.$this->newline.$this->_finalbody;
+				}
+
+				if ($this->send_multipart !== FALSE)
+				{
+					$this->_finalbody .= '--'.$boundary.'--';
+				}
+
+				return;
+
+			case 'plain-attach':
+
+				$boundary = uniqid('B_ATC_');
+				$hdr .= 'Content-Type: multipart/mixed; boundary="'.$boundary.'"';
+
+				if ($this->_get_protocol() === 'mail')
+				{
+					$this->_header_str .= $hdr;
+				}
+
+				$body .= $this->_get_mime_message().$this->newline
+					.$this->newline
+					.'--'.$boundary.$this->newline
+					.'Content-Type: text/plain; charset='.$this->charset.$this->newline
+					.'Content-Transfer-Encoding: '.$this->_get_encoding().$this->newline
+					.$this->newline
+					.$this->_body.$this->newline.$this->newline;
+
+				$this->_append_attachments($body, $boundary);
+
+				break;
+			case 'html-attach':
+
+				$alt_boundary = uniqid('B_ALT_');
+				$last_boundary = NULL;
+
+				if ($this->_attachments_have_multipart('mixed'))
+				{
+					$atc_boundary = uniqid('B_ATC_');
+					$hdr .= 'Content-Type: multipart/mixed; boundary="'.$atc_boundary.'"';
+					$last_boundary = $atc_boundary;
+				}
+
+				if ($this->_attachments_have_multipart('related'))
+				{
+					$rel_boundary = uniqid('B_REL_');
+					$rel_boundary_header = 'Content-Type: multipart/related; boundary="'.$rel_boundary.'"';
+
+					if (isset($last_boundary))
+					{
+						$body .= '--'.$last_boundary.$this->newline.$rel_boundary_header;
+					}
+					else
+					{
+						$hdr .= $rel_boundary_header;
+					}
+
+					$last_boundary = $rel_boundary;
+				}
+
+				if ($this->_get_protocol() === 'mail')
+				{
+					$this->_header_str .= $hdr;
+				}
+
+				self::strlen($body) && $body .= $this->newline.$this->newline;
+				$body .= $this->_get_mime_message().$this->newline.$this->newline
+					.'--'.$last_boundary.$this->newline
+
+					.'Content-Type: multipart/alternative; boundary="'.$alt_boundary.'"'.$this->newline.$this->newline
+					.'--'.$alt_boundary.$this->newline
+
+					.'Content-Type: text/plain; charset='.$this->charset.$this->newline
+					.'Content-Transfer-Encoding: '.$this->_get_encoding().$this->newline.$this->newline
+					.$this->_get_alt_message().$this->newline.$this->newline
+					.'--'.$alt_boundary.$this->newline
+
+					.'Content-Type: text/html; charset='.$this->charset.$this->newline
+					.'Content-Transfer-Encoding: quoted-printable'.$this->newline.$this->newline
+
+					.$this->_prep_quoted_printable($this->_body).$this->newline.$this->newline
+					.'--'.$alt_boundary.'--'.$this->newline.$this->newline;
+
+				if ( ! empty($rel_boundary))
+				{
+					$body .= $this->newline.$this->newline;
+					$this->_append_attachments($body, $rel_boundary, 'related');
+				}
+
+				// multipart/mixed attachments
+				if ( ! empty($atc_boundary))
+				{
+					$body .= $this->newline.$this->newline;
+					$this->_append_attachments($body, $atc_boundary, 'mixed');
+				}
+
+				break;
+		}
+
+		$this->_finalbody = ($this->_get_protocol() === 'mail')
+			? $body
+			: $hdr.$this->newline.$this->newline.$body;
+	}
+
+	// --------------------------------------------------------------------
+
+	protected function _attachments_have_multipart($type)
+	{
+		foreach ($this->_attachments as &$attachment)
+		{
+			if ($attachment['multipart'] === $type)
+			{
+				return TRUE;
+			}
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prepares attachment string
+	 *
+	 * @param	string	$body		Message body to append to
+	 * @param	string	$boundary	Multipart boundary
+	 * @param	string	$multipart	When provided, only attachments of this type will be processed
+	 * @return	string
+	 */
+	protected function _append_attachments(&$body, $boundary, $multipart = null)
+	{
+		for ($i = 0, $c = count($this->_attachments); $i < $c; $i++)
+		{
+			if (isset($multipart) && $this->_attachments[$i]['multipart'] !== $multipart)
+			{
+				continue;
+			}
+
+			$name = isset($this->_attachments[$i]['name'][1])
+				? $this->_attachments[$i]['name'][1]
+				: basename($this->_attachments[$i]['name'][0]);
+
+			$body .= '--'.$boundary.$this->newline
+				.'Content-Type: '.$this->_attachments[$i]['type'].'; name="'.$name.'"'.$this->newline
+				.'Content-Disposition: '.$this->_attachments[$i]['disposition'].';'.$this->newline
+				.'Content-Transfer-Encoding: base64'.$this->newline
+				.(empty($this->_attachments[$i]['cid']) ? '' : 'Content-ID: <'.$this->_attachments[$i]['cid'].'>'.$this->newline)
+				.$this->newline
+				.$this->_attachments[$i]['content'].$this->newline;
+		}
+
+		// $name won't be set if no attachments were appended,
+		// and therefore a boundary wouldn't be necessary
+		empty($name) OR $body .= '--'.$boundary.'--';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep Quoted Printable
+	 *
+	 * Prepares string for Quoted-Printable Content-Transfer-Encoding
+	 * Refer to RFC 2045 https://www.ietf.org/rfc/rfc2045.txt
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _prep_quoted_printable($str)
+	{
+		// ASCII code numbers for "safe" characters that can always be
+		// used literally, without encoding, as described in RFC 2049.
+		// https://www.ietf.org/rfc/rfc2049.txt
+		static $ascii_safe_chars = array(
+			// ' (  )   +   ,   -   .   /   :   =   ?
+			39, 40, 41, 43, 44, 45, 46, 47, 58, 61, 63,
+			// numbers
+			48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
+			// upper-case letters
+			65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90,
+			// lower-case letters
+			97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122
+		);
+
+		// We are intentionally wrapping so mail servers will encode characters
+		// properly and MUAs will behave, so {unwrap} must go!
+		$str = str_replace(array('{unwrap}', '{/unwrap}'), '', $str);
+
+		// RFC 2045 specifies CRLF as "\r\n".
+		// However, many developers choose to override that and violate
+		// the RFC rules due to (apparently) a bug in MS Exchange,
+		// which only works with "\n".
+		if ($this->crlf === "\r\n")
+		{
+			return quoted_printable_encode($str);
+		}
+
+		// Reduce multiple spaces & remove nulls
+		$str = preg_replace(array('| +|', '/\x00+/'), array(' ', ''), $str);
+
+		// Standardize newlines
+		if (strpos($str, "\r") !== FALSE)
+		{
+			$str = str_replace(array("\r\n", "\r"), "\n", $str);
+		}
+
+		$escape = '=';
+		$output = '';
+
+		foreach (explode("\n", $str) as $line)
+		{
+			$length = self::strlen($line);
+			$temp = '';
+
+			// Loop through each character in the line to add soft-wrap
+			// characters at the end of a line " =\r\n" and add the newly
+			// processed line(s) to the output (see comment on $crlf class property)
+			for ($i = 0; $i < $length; $i++)
+			{
+				// Grab the next character
+				$char = $line[$i];
+				$ascii = ord($char);
+
+				// Convert spaces and tabs but only if it's the end of the line
+				if ($ascii === 32 OR $ascii === 9)
+				{
+					if ($i === ($length - 1))
+					{
+						$char = $escape.sprintf('%02s', dechex($ascii));
+					}
+				}
+				// DO NOT move this below the $ascii_safe_chars line!
+				//
+				// = (equals) signs are allowed by RFC2049, but must be encoded
+				// as they are the encoding delimiter!
+				elseif ($ascii === 61)
+				{
+					$char = $escape.strtoupper(sprintf('%02s', dechex($ascii)));  // =3D
+				}
+				elseif ( ! in_array($ascii, $ascii_safe_chars, TRUE))
+				{
+					$char = $escape.strtoupper(sprintf('%02s', dechex($ascii)));
+				}
+
+				// If we're at the character limit, add the line to the output,
+				// reset our temp variable, and keep on chuggin'
+				if ((self::strlen($temp) + self::strlen($char)) >= 76)
+				{
+					$output .= $temp.$escape.$this->crlf;
+					$temp = '';
+				}
+
+				// Add the character to our temporary line
+				$temp .= $char;
+			}
+
+			// Add our completed line to the output
+			$output .= $temp.$this->crlf;
+		}
+
+		// get rid of extra CRLF tacked onto the end
+		return self::substr($output, 0, self::strlen($this->crlf) * -1);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep Q Encoding
+	 *
+	 * Performs "Q Encoding" on a string for use in email headers.
+	 * It's related but not identical to quoted-printable, so it has its
+	 * own method.
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _prep_q_encoding($str)
+	{
+		$str = str_replace(array("\r", "\n"), '', $str);
+
+		if ($this->charset === 'UTF-8')
+		{
+			// Note: We used to have mb_encode_mimeheader() as the first choice
+			//       here, but it turned out to be buggy and unreliable. DO NOT
+			//       re-add it! -- Narf
+			if (ICONV_ENABLED === TRUE)
+			{
+				$output = @iconv_mime_encode('', $str,
+					array(
+						'scheme' => 'Q',
+						'line-length' => 76,
+						'input-charset' => $this->charset,
+						'output-charset' => $this->charset,
+						'line-break-chars' => $this->crlf
+					)
+				);
+
+				// There are reports that iconv_mime_encode() might fail and return FALSE
+				if ($output !== FALSE)
+				{
+					// iconv_mime_encode() will always put a header field name.
+					// We've passed it an empty one, but it still prepends our
+					// encoded string with ': ', so we need to strip it.
+					return self::substr($output, 2);
+				}
+
+				$chars = iconv_strlen($str, 'UTF-8');
+			}
+			elseif (MB_ENABLED === TRUE)
+			{
+				$chars = mb_strlen($str, 'UTF-8');
+			}
+		}
+
+		// We might already have this set for UTF-8
+		isset($chars) OR $chars = self::strlen($str);
+
+		$output = '=?'.$this->charset.'?Q?';
+		for ($i = 0, $length = self::strlen($output); $i < $chars; $i++)
+		{
+			$chr = ($this->charset === 'UTF-8' && ICONV_ENABLED === TRUE)
+				? '='.implode('=', str_split(strtoupper(bin2hex(iconv_substr($str, $i, 1, $this->charset))), 2))
+				: '='.strtoupper(bin2hex($str[$i]));
+
+			// RFC 2045 sets a limit of 76 characters per line.
+			// We'll append ?= to the end of each line though.
+			if ($length + ($l = self::strlen($chr)) > 74)
+			{
+				$output .= '?='.$this->crlf // EOL
+					.' =?'.$this->charset.'?Q?'.$chr; // New line
+				$length = 6 + self::strlen($this->charset) + $l; // Reset the length for the new line
+			}
+			else
+			{
+				$output .= $chr;
+				$length += $l;
+			}
+		}
+
+		// End the header
+		return $output.'?=';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send Email
+	 *
+	 * @param	bool	$auto_clear = TRUE
+	 * @return	bool
+	 */
+	public function send($auto_clear = TRUE)
+	{
+		if ( ! isset($this->_headers['From']))
+		{
+			$this->_set_error_message('lang:email_no_from');
+			return FALSE;
+		}
+
+		if ($this->_replyto_flag === FALSE)
+		{
+			$this->reply_to($this->_headers['From']);
+		}
+
+		if (empty($this->_recipients) && ! isset($this->_headers['To'])
+			&& empty($this->_bcc_array) && ! isset($this->_headers['Bcc'])
+			&& ! isset($this->_headers['Cc']))
+		{
+			$this->_set_error_message('lang:email_no_recipients');
+			return FALSE;
+		}
+
+		$this->_build_headers();
+
+		if ($this->bcc_batch_mode && count($this->_bcc_array) > $this->bcc_batch_size)
+		{
+			$this->batch_bcc_send();
+
+			if ($auto_clear)
+			{
+				$this->clear();
+			}
+
+			return TRUE;
+		}
+
+		$this->_build_message();
+		$result = $this->_spool_email();
+
+		if ($result && $auto_clear)
+		{
+			$this->clear();
+		}
+
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Batch Bcc Send. Sends groups of BCCs in batches
+	 *
+	 * @return	void
+	 */
+	public function batch_bcc_send()
+	{
+		$float = $this->bcc_batch_size - 1;
+		$set = '';
+		$chunk = array();
+
+		for ($i = 0, $c = count($this->_bcc_array); $i < $c; $i++)
+		{
+			if (isset($this->_bcc_array[$i]))
+			{
+				$set .= ', '.$this->_bcc_array[$i];
+			}
+
+			if ($i === $float)
+			{
+				$chunk[] = self::substr($set, 1);
+				$float += $this->bcc_batch_size;
+				$set = '';
+			}
+
+			if ($i === $c-1)
+			{
+				$chunk[] = self::substr($set, 1);
+			}
+		}
+
+		for ($i = 0, $c = count($chunk); $i < $c; $i++)
+		{
+			unset($this->_headers['Bcc']);
+
+			$bcc = $this->clean_email($this->_str_to_array($chunk[$i]));
+
+			if ($this->protocol !== 'smtp')
+			{
+				$this->set_header('Bcc', implode(', ', $bcc));
+			}
+			else
+			{
+				$this->_bcc_array = $bcc;
+			}
+
+			$this->_build_message();
+			$this->_spool_email();
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Unwrap special elements
+	 *
+	 * @return	void
+	 */
+	protected function _unwrap_specials()
+	{
+		$this->_finalbody = preg_replace_callback('/\{unwrap\}(.*?)\{\/unwrap\}/si', array($this, '_remove_nl_callback'), $this->_finalbody);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Strip line-breaks via callback
+	 *
+	 * @param	string	$matches
+	 * @return	string
+	 */
+	protected function _remove_nl_callback($matches)
+	{
+		if (strpos($matches[1], "\r") !== FALSE OR strpos($matches[1], "\n") !== FALSE)
+		{
+			$matches[1] = str_replace(array("\r\n", "\r", "\n"), '', $matches[1]);
+		}
+
+		return $matches[1];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Spool mail to the mail server
+	 *
+	 * @return	bool
+	 */
+	protected function _spool_email()
+	{
+		$this->_unwrap_specials();
+
+		$protocol = $this->_get_protocol();
+		$method   = '_send_with_'.$protocol;
+		if ( ! $this->$method())
+		{
+			$this->_set_error_message('lang:email_send_failure_'.($protocol === 'mail' ? 'phpmail' : $protocol));
+			return FALSE;
+		}
+
+		$this->_set_error_message('lang:email_sent', $protocol);
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate email for shell
+	 *
+	 * Applies stricter, shell-safe validation to email addresses.
+	 * Introduced to prevent RCE via sendmail's -f option.
+	 *
+	 * @see	https://github.com/bcit-ci/CodeIgniter/issues/4963
+	 * @see	https://gist.github.com/Zenexer/40d02da5e07f151adeaeeaa11af9ab36
+	 * @license	https://creativecommons.org/publicdomain/zero/1.0/	CC0 1.0, Public Domain
+	 *
+	 * Credits for the base concept go to Paul Buonopane <paul@namepros.com>
+	 *
+	 * @param	string	$email
+	 * @return	bool
+	 */
+	protected function _validate_email_for_shell(&$email)
+	{
+		if (function_exists('idn_to_ascii') && $atpos = strpos($email, '@'))
+		{
+			list($account, $domain) = explode('@', $email, 2);
+			$domain = defined('INTL_IDNA_VARIANT_UTS46')
+				? idn_to_ascii($domain, 0, INTL_IDNA_VARIANT_UTS46)
+				: idn_to_ascii($domain);
+
+			if ($domain !== FALSE)
+			{
+				$email = $account.'@'.$domain;
+			}
+		}
+
+		return (filter_var($email, FILTER_VALIDATE_EMAIL) === $email && preg_match('#\A[a-z0-9._+-]+@[a-z0-9.-]{1,253}\z#i', $email));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send using mail()
+	 *
+	 * @return	bool
+	 */
+	protected function _send_with_mail()
+	{
+		if (is_array($this->_recipients))
+		{
+			$this->_recipients = implode(', ', $this->_recipients);
+		}
+
+		// _validate_email_for_shell() below accepts by reference,
+		// so this needs to be assigned to a variable
+		$from = $this->clean_email($this->_headers['Return-Path']);
+
+		if ( ! $this->_validate_email_for_shell($from))
+		{
+			return mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str);
+		}
+
+		// most documentation of sendmail using the "-f" flag lacks a space after it, however
+		// we've encountered servers that seem to require it to be in place.
+		return mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str, '-f '.$from);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send using Sendmail
+	 *
+	 * @return	bool
+	 */
+	protected function _send_with_sendmail()
+	{
+		// _validate_email_for_shell() below accepts by reference,
+		// so this needs to be assigned to a variable
+		$from = $this->clean_email($this->_headers['From']);
+		if ($this->_validate_email_for_shell($from))
+		{
+			$from = '-f '.$from;
+		}
+		else
+		{
+			$from = '';
+		}
+
+		// is popen() enabled?
+		if ( ! function_usable('popen')	OR FALSE === ($fp = @popen($this->mailpath.' -oi '.$from.' -t', 'w')))
+		{
+			// server probably has popen disabled, so nothing we can do to get a verbose error.
+			return FALSE;
+		}
+
+		fputs($fp, $this->_header_str);
+		fputs($fp, $this->_finalbody);
+
+		$status = pclose($fp);
+
+		if ($status !== 0)
+		{
+			$this->_set_error_message('lang:email_exit_status', $status);
+			$this->_set_error_message('lang:email_no_socket');
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send using SMTP
+	 *
+	 * @return	bool
+	 */
+	protected function _send_with_smtp()
+	{
+		if ($this->smtp_host === '')
+		{
+			$this->_set_error_message('lang:email_no_hostname');
+			return FALSE;
+		}
+
+		if ( ! $this->_smtp_connect() OR ! $this->_smtp_authenticate())
+		{
+			return FALSE;
+		}
+
+		if ( ! $this->_send_command('from', $this->clean_email($this->_headers['From'])))
+		{
+			$this->_smtp_end();
+			return FALSE;
+		}
+
+		foreach ($this->_recipients as $val)
+		{
+			if ( ! $this->_send_command('to', $val))
+			{
+				$this->_smtp_end();
+				return FALSE;
+			}
+		}
+
+		foreach ($this->_cc_array as $val)
+		{
+			if ($val !== '' && ! $this->_send_command('to', $val))
+			{
+				$this->_smtp_end();
+				return FALSE;
+			}
+		}
+
+		foreach ($this->_bcc_array as $val)
+		{
+			if ($val !== '' && ! $this->_send_command('to', $val))
+			{
+				$this->_smtp_end();
+				return FALSE;
+			}
+		}
+
+		if ( ! $this->_send_command('data'))
+		{
+			$this->_smtp_end();
+			return FALSE;
+		}
+
+		// perform dot transformation on any lines that begin with a dot
+		$this->_send_data($this->_header_str.preg_replace('/^\./m', '..$1', $this->_finalbody));
+
+		$this->_send_data('.');
+		$reply = $this->_get_smtp_data();
+		$this->_set_error_message($reply);
+
+		$this->_smtp_end();
+
+		if (strpos($reply, '250') !== 0)
+		{
+			$this->_set_error_message('lang:email_smtp_error', $reply);
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * SMTP End
+	 *
+	 * Shortcut to send RSET or QUIT depending on keep-alive
+	 *
+	 * @return	void
+	 */
+	protected function _smtp_end()
+	{
+		$this->_send_command($this->smtp_keepalive ? 'reset' : 'quit');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * SMTP Connect
+	 *
+	 * @return	string
+	 */
+	protected function _smtp_connect()
+	{
+		if (is_resource($this->_smtp_connect))
+		{
+			return TRUE;
+		}
+
+		$ssl = ($this->smtp_crypto === 'ssl') ? 'ssl://' : '';
+
+		$this->_smtp_connect = fsockopen(
+			$ssl.$this->smtp_host,
+			$this->smtp_port,
+			$errno,
+			$errstr,
+			$this->smtp_timeout
+		);
+
+		if ( ! is_resource($this->_smtp_connect))
+		{
+			$this->_set_error_message('lang:email_smtp_error', $errno.' '.$errstr);
+			return FALSE;
+		}
+
+		stream_set_timeout($this->_smtp_connect, $this->smtp_timeout);
+		$this->_set_error_message($this->_get_smtp_data());
+
+		if ($this->smtp_crypto === 'tls')
+		{
+			$this->_send_command('hello');
+			$this->_send_command('starttls');
+
+			/**
+			 * STREAM_CRYPTO_METHOD_TLS_CLIENT is quite the mess ...
+			 *
+			 * - On PHP <5.6 it doesn't even mean TLS, but SSL 2.0, and there's no option to use actual TLS
+			 * - On PHP 5.6.0-5.6.6, >=7.2 it means negotiation with any of TLS 1.0, 1.1, 1.2
+			 * - On PHP 5.6.7-7.1.* it means only TLS 1.0
+			 *
+			 * We want the negotiation, so we'll force it below ...
+			 */
+			$method = is_php('5.6')
+				? STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT | STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT | STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT
+				: STREAM_CRYPTO_METHOD_TLS_CLIENT;
+			$crypto = stream_socket_enable_crypto($this->_smtp_connect, TRUE, $method);
+
+			if ($crypto !== TRUE)
+			{
+				$this->_set_error_message('lang:email_smtp_error', $this->_get_smtp_data());
+				return FALSE;
+			}
+		}
+
+		return $this->_send_command('hello');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send SMTP command
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	protected function _send_command($cmd, $data = '')
+	{
+		switch ($cmd)
+		{
+			case 'hello':
+				if ($this->_smtp_auth OR $this->_get_encoding() === '8bit')
+				{
+					$this->_send_data('EHLO '.$this->_get_hostname());
+				}
+				else
+				{
+					$this->_send_data('HELO '.$this->_get_hostname());
+				}
+
+				$resp = 250;
+				break;
+			case 'starttls':
+				$this->_send_data('STARTTLS');
+				$resp = 220;
+				break;
+			case 'from':
+				$this->_send_data('MAIL FROM:<'.$data.'>');
+				$resp = 250;
+				break;
+			case 'to':
+				if ($this->dsn)
+				{
+					$this->_send_data('RCPT TO:<'.$data.'> NOTIFY=SUCCESS,DELAY,FAILURE ORCPT=rfc822;'.$data);
+				}
+				else
+				{
+					$this->_send_data('RCPT TO:<'.$data.'>');
+				}
+				$resp = 250;
+				break;
+			case 'data':
+				$this->_send_data('DATA');
+				$resp = 354;
+				break;
+			case 'reset':
+				$this->_send_data('RSET');
+				$resp = 250;
+				break;
+			case 'quit':
+				$this->_send_data('QUIT');
+				$resp = 221;
+				break;
+		}
+
+		$reply = $this->_get_smtp_data();
+
+		$this->_debug_msg[] = '<pre>'.$cmd.': '.$reply.'</pre>';
+
+		if ((int) self::substr($reply, 0, 3) !== $resp)
+		{
+			$this->_set_error_message('lang:email_smtp_error', $reply);
+			return FALSE;
+		}
+
+		if ($cmd === 'quit')
+		{
+			fclose($this->_smtp_connect);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * SMTP Authenticate
+	 *
+	 * @return	bool
+	 */
+	protected function _smtp_authenticate()
+	{
+		if ( ! $this->_smtp_auth)
+		{
+			return TRUE;
+		}
+
+		if ($this->smtp_user === '' && $this->smtp_pass === '')
+		{
+			$this->_set_error_message('lang:email_no_smtp_unpw');
+			return FALSE;
+		}
+
+		$this->_send_data('AUTH LOGIN');
+		$reply = $this->_get_smtp_data();
+
+		if (strpos($reply, '503') === 0)	// Already authenticated
+		{
+			return TRUE;
+		}
+		elseif (strpos($reply, '334') !== 0)
+		{
+			$this->_set_error_message('lang:email_failed_smtp_login', $reply);
+			return FALSE;
+		}
+
+		$this->_send_data(base64_encode($this->smtp_user));
+		$reply = $this->_get_smtp_data();
+
+		if (strpos($reply, '334') !== 0)
+		{
+			$this->_set_error_message('lang:email_smtp_auth_un', $reply);
+			return FALSE;
+		}
+
+		$this->_send_data(base64_encode($this->smtp_pass));
+		$reply = $this->_get_smtp_data();
+
+		if (strpos($reply, '235') !== 0)
+		{
+			$this->_set_error_message('lang:email_smtp_auth_pw', $reply);
+			return FALSE;
+		}
+
+		if ($this->smtp_keepalive)
+		{
+			$this->_smtp_auth = FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send SMTP data
+	 *
+	 * @param	string	$data
+	 * @return	bool
+	 */
+	protected function _send_data($data)
+	{
+		$data .= $this->newline;
+		for ($written = $timestamp = 0, $length = self::strlen($data); $written < $length; $written += $result)
+		{
+			if (($result = fwrite($this->_smtp_connect, self::substr($data, $written))) === FALSE)
+			{
+				break;
+			}
+			// See https://bugs.php.net/bug.php?id=39598 and https://secure.php.net/manual/en/function.fwrite.php#96951
+			elseif ($result === 0)
+			{
+				if ($timestamp === 0)
+				{
+					$timestamp = time();
+				}
+				elseif ($timestamp < (time() - $this->smtp_timeout))
+				{
+					$result = FALSE;
+					break;
+				}
+
+				usleep(250000);
+				continue;
+			}
+
+			$timestamp = 0;
+		}
+
+		if ($result === FALSE)
+		{
+			$this->_set_error_message('lang:email_smtp_data_failure', $data);
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get SMTP data
+	 *
+	 * @return	string
+	 */
+	protected function _get_smtp_data()
+	{
+		$data = '';
+
+		while ($str = fgets($this->_smtp_connect, 512))
+		{
+			$data .= $str;
+
+			if ($str[3] === ' ')
+			{
+				break;
+			}
+		}
+
+		return $data;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Hostname
+	 *
+	 * There are only two legal types of hostname - either a fully
+	 * qualified domain name (eg: "mail.example.com") or an IP literal
+	 * (eg: "[1.2.3.4]").
+	 *
+	 * @link	https://tools.ietf.org/html/rfc5321#section-2.3.5
+	 * @link	https://cbl.abuseat.org/namingproblems.html
+	 * @return	string
+	 */
+	protected function _get_hostname()
+	{
+		if (isset($_SERVER['SERVER_NAME']))
+		{
+			return $_SERVER['SERVER_NAME'];
+		}
+
+		return isset($_SERVER['SERVER_ADDR']) ? '['.$_SERVER['SERVER_ADDR'].']' : '[127.0.0.1]';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Debug Message
+	 *
+	 * @param	array	$include	List of raw data chunks to include in the output
+	 *					Valid options are: 'headers', 'subject', 'body'
+	 * @return	string
+	 */
+	public function print_debugger($include = array('headers', 'subject', 'body'))
+	{
+		$msg = implode('', $this->_debug_msg);
+
+		// Determine which parts of our raw data needs to be printed
+		$raw_data = '';
+		is_array($include) OR $include = array($include);
+
+		in_array('headers', $include, TRUE) && $raw_data  = htmlspecialchars($this->_header_str)."\n";
+		in_array('subject', $include, TRUE) && $raw_data .= htmlspecialchars($this->_subject)."\n";
+		in_array('body', $include, TRUE)    && $raw_data .= htmlspecialchars($this->_finalbody);
+
+		return $msg.($raw_data === '' ? '' : '<pre>'.$raw_data.'</pre>');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Message
+	 *
+	 * @param	string	$msg
+	 * @param	string	$val = ''
+	 * @return	void
+	 */
+	protected function _set_error_message($msg, $val = '')
+	{
+		$CI =& get_instance();
+		$CI->lang->load('email');
+
+		if (sscanf($msg, 'lang:%s', $line) !== 1 OR FALSE === ($line = $CI->lang->line($line)))
+		{
+			$this->_debug_msg[] = str_replace('%s', $val, $msg).'<br />';
+		}
+		else
+		{
+			$this->_debug_msg[] = str_replace('%s', $val, $line).'<br />';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Mime Types
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _mime_types($ext = '')
+	{
+		$ext = strtolower($ext);
+
+		$mimes =& get_mimes();
+
+		if (isset($mimes[$ext]))
+		{
+			return is_array($mimes[$ext])
+				? current($mimes[$ext])
+				: $mimes[$ext];
+		}
+
+		return 'application/x-unknown-content-type';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Destructor
+	 *
+	 * @return	void
+	 */
+	public function __destruct()
+	{
+		is_resource($this->_smtp_connect) && $this->_send_command('quit');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return (self::$func_overload)
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe substr()
+	 *
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int	$length
+	 * @return	string
+	 */
+	protected static function substr($str, $start, $length = NULL)
+	{
+		if (self::$func_overload)
+		{
+			return mb_substr($str, $start, $length, '8bit');
+		}
+
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/libraries/Encrypt.php b/system/libraries/Encrypt.php
new file mode 100644
index 00000000..df1af4cf
--- /dev/null
+++ b/system/libraries/Encrypt.php
@@ -0,0 +1,521 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Encryption Class
+ *
+ * Provides two-way keyed encoding using Mcrypt
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/encryption.html
+ */
+class CI_Encrypt {
+
+	/**
+	 * Reference to the user's encryption key
+	 *
+	 * @var string
+	 */
+	public $encryption_key		= '';
+
+	/**
+	 * Type of hash operation
+	 *
+	 * @var string
+	 */
+	protected $_hash_type		= 'sha1';
+
+	/**
+	 * Flag for the existence of mcrypt
+	 *
+	 * @var bool
+	 */
+	protected $_mcrypt_exists	= FALSE;
+
+	/**
+	 * Current cipher to be used with mcrypt
+	 *
+	 * @var string
+	 */
+	protected $_mcrypt_cipher;
+
+	/**
+	 * Method for encrypting/decrypting data
+	 *
+	 * @var int
+	 */
+	protected $_mcrypt_mode;
+
+	/**
+	 * Initialize Encryption class
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		if (($this->_mcrypt_exists = function_exists('mcrypt_encrypt')) === FALSE)
+		{
+			show_error('The Encrypt library requires the Mcrypt extension.');
+		}
+
+		log_message('info', 'Encrypt Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch the encryption key
+	 *
+	 * Returns it as MD5 in order to have an exact-length 128 bit key.
+	 * Mcrypt is sensitive to keys that are not the correct length
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function get_key($key = '')
+	{
+		if ($key === '')
+		{
+			if ($this->encryption_key !== '')
+			{
+				return $this->encryption_key;
+			}
+
+			$key = config_item('encryption_key');
+
+			if ( ! self::strlen($key))
+			{
+				show_error('In order to use the encryption class requires that you set an encryption key in your config file.');
+			}
+		}
+
+		return md5($key);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the encryption key
+	 *
+	 * @param	string
+	 * @return	CI_Encrypt
+	 */
+	public function set_key($key = '')
+	{
+		$this->encryption_key = $key;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encode
+	 *
+	 * Encodes the message string using bitwise XOR encoding.
+	 * The key is combined with a random hash, and then it
+	 * too gets converted using XOR. The whole thing is then run
+	 * through mcrypt using the randomized key. The end result
+	 * is a double-encrypted message string that is randomized
+	 * with each call to this function, even if the supplied
+	 * message and key are the same.
+	 *
+	 * @param	string	the string to encode
+	 * @param	string	the key
+	 * @return	string
+	 */
+	public function encode($string, $key = '')
+	{
+		return base64_encode($this->mcrypt_encode($string, $this->get_key($key)));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decode
+	 *
+	 * Reverses the above process
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	public function decode($string, $key = '')
+	{
+		if (preg_match('/[^a-zA-Z0-9\/\+=]/', $string) OR base64_encode(base64_decode($string)) !== $string)
+		{
+			return FALSE;
+		}
+
+		return $this->mcrypt_decode(base64_decode($string), $this->get_key($key));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encode from Legacy
+	 *
+	 * Takes an encoded string from the original Encryption class algorithms and
+	 * returns a newly encoded string using the improved method added in 2.0.0
+	 * This allows for backwards compatibility and a method to transition to the
+	 * new encryption algorithms.
+	 *
+	 * For more details, see https://codeigniter.com/userguide3/installation/upgrade_200.html#encryption
+	 *
+	 * @param	string
+	 * @param	int		(mcrypt mode constant)
+	 * @param	string
+	 * @return	string
+	 */
+	public function encode_from_legacy($string, $legacy_mode = MCRYPT_MODE_ECB, $key = '')
+	{
+		if (preg_match('/[^a-zA-Z0-9\/\+=]/', $string))
+		{
+			return FALSE;
+		}
+
+		// decode it first
+		// set mode temporarily to what it was when string was encoded with the legacy
+		// algorithm - typically MCRYPT_MODE_ECB
+		$current_mode = $this->_get_mode();
+		$this->set_mode($legacy_mode);
+
+		$key = $this->get_key($key);
+		$dec = base64_decode($string);
+		if (($dec = $this->mcrypt_decode($dec, $key)) === FALSE)
+		{
+			$this->set_mode($current_mode);
+			return FALSE;
+		}
+
+		$dec = $this->_xor_decode($dec, $key);
+
+		// set the mcrypt mode back to what it should be, typically MCRYPT_MODE_CBC
+		$this->set_mode($current_mode);
+
+		// and re-encode
+		return base64_encode($this->mcrypt_encode($dec, $key));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * XOR Decode
+	 *
+	 * Takes an encoded string and key as input and generates the
+	 * plain-text original message
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _xor_decode($string, $key)
+	{
+		$string = $this->_xor_merge($string, $key);
+
+		$dec = '';
+		for ($i = 0, $l = self::strlen($string); $i < $l; $i++)
+		{
+			$dec .= ($string[$i++] ^ $string[$i]);
+		}
+
+		return $dec;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * XOR key + string Combiner
+	 *
+	 * Takes a string and key as input and computes the difference using XOR
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _xor_merge($string, $key)
+	{
+		$hash = $this->hash($key);
+		$str = '';
+
+		for ($i = 0, $ls = self::strlen($string), $lh = self::strlen($hash); $i < $ls; $i++)
+		{
+			$str .= $string[$i] ^ $hash[($i % $lh)];
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encrypt using Mcrypt
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	public function mcrypt_encode($data, $key)
+	{
+		$init_size = mcrypt_get_iv_size($this->_get_cipher(), $this->_get_mode());
+		$init_vect = mcrypt_create_iv($init_size, MCRYPT_DEV_URANDOM);
+		return $this->_add_cipher_noise($init_vect.mcrypt_encrypt($this->_get_cipher(), $key, $data, $this->_get_mode(), $init_vect), $key);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decrypt using Mcrypt
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	public function mcrypt_decode($data, $key)
+	{
+		$data = $this->_remove_cipher_noise($data, $key);
+		$init_size = mcrypt_get_iv_size($this->_get_cipher(), $this->_get_mode());
+
+		if ($init_size > self::strlen($data))
+		{
+			return FALSE;
+		}
+
+		$init_vect = self::substr($data, 0, $init_size);
+		$data      = self::substr($data, $init_size);
+
+		return rtrim(mcrypt_decrypt($this->_get_cipher(), $key, $data, $this->_get_mode(), $init_vect), "\0");
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Adds permuted noise to the IV + encrypted data to protect
+	 * against Man-in-the-middle attacks on CBC mode ciphers
+	 * http://www.ciphersbyritter.com/GLOSSARY.HTM#IV
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _add_cipher_noise($data, $key)
+	{
+		$key = $this->hash($key);
+		$str = '';
+
+		for ($i = 0, $j = 0, $ld = self::strlen($data), $lk = self::strlen($key); $i < $ld; ++$i, ++$j)
+		{
+			if ($j >= $lk)
+			{
+				$j = 0;
+			}
+
+			$str .= chr((ord($data[$i]) + ord($key[$j])) % 256);
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Removes permuted noise from the IV + encrypted data, reversing
+	 * _add_cipher_noise()
+	 *
+	 * Function description
+	 *
+	 * @param	string	$data
+	 * @param	string	$key
+	 * @return	string
+	 */
+	protected function _remove_cipher_noise($data, $key)
+	{
+		$key = $this->hash($key);
+		$str = '';
+
+		for ($i = 0, $j = 0, $ld = self::strlen($data), $lk = self::strlen($key); $i < $ld; ++$i, ++$j)
+		{
+			if ($j >= $lk)
+			{
+				$j = 0;
+			}
+
+			$temp = ord($data[$i]) - ord($key[$j]);
+
+			if ($temp < 0)
+			{
+				$temp += 256;
+			}
+
+			$str .= chr($temp);
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Mcrypt Cipher
+	 *
+	 * @param	int
+	 * @return	CI_Encrypt
+	 */
+	public function set_cipher($cipher)
+	{
+		$this->_mcrypt_cipher = $cipher;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Mcrypt Mode
+	 *
+	 * @param	int
+	 * @return	CI_Encrypt
+	 */
+	public function set_mode($mode)
+	{
+		$this->_mcrypt_mode = $mode;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Mcrypt cipher Value
+	 *
+	 * @return	int
+	 */
+	protected function _get_cipher()
+	{
+		if ($this->_mcrypt_cipher === NULL)
+		{
+			return $this->_mcrypt_cipher = MCRYPT_RIJNDAEL_256;
+		}
+
+		return $this->_mcrypt_cipher;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Mcrypt Mode Value
+	 *
+	 * @return	int
+	 */
+	protected function _get_mode()
+	{
+		if ($this->_mcrypt_mode === NULL)
+		{
+			return $this->_mcrypt_mode = MCRYPT_MODE_CBC;
+		}
+
+		return $this->_mcrypt_mode;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Hash type
+	 *
+	 * @param	string
+	 * @return	void
+	 */
+	public function set_hash($type = 'sha1')
+	{
+		$this->_hash_type = in_array($type, hash_algos()) ? $type : 'sha1';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Hash encode a string
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function hash($str)
+	{
+		return hash($this->_hash_type, $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return defined('MB_OVERLOAD_STRING')
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe substr()
+	 *
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int	$length
+	 * @return	string
+	 */
+	protected static function substr($str, $start, $length = NULL)
+	{
+		if (defined('MB_OVERLOAD_STRING'))
+		{
+			// mb_substr($str, $start, null, '8bit') returns an empty
+			// string on PHP 5.3
+			isset($length) OR $length = ($start >= 0 ? self::strlen($str) - $start : -$start);
+			return mb_substr($str, $start, $length, '8bit');
+		}
+
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/libraries/Encryption.php b/system/libraries/Encryption.php
new file mode 100644
index 00000000..b11588af
--- /dev/null
+++ b/system/libraries/Encryption.php
@@ -0,0 +1,938 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Encryption Class
+ *
+ * Provides two-way keyed encryption via PHP's MCrypt and/or OpenSSL extensions.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/libraries/encryption.html
+ */
+class CI_Encryption {
+
+	/**
+	 * Encryption cipher
+	 *
+	 * @var	string
+	 */
+	protected $_cipher = 'aes-128';
+
+	/**
+	 * Cipher mode
+	 *
+	 * @var	string
+	 */
+	protected $_mode = 'cbc';
+
+	/**
+	 * Cipher handle
+	 *
+	 * @var	mixed
+	 */
+	protected $_handle;
+
+	/**
+	 * Encryption key
+	 *
+	 * @var	string
+	 */
+	protected $_key;
+
+	/**
+	 * PHP extension to be used
+	 *
+	 * @var	string
+	 */
+	protected $_driver;
+
+	/**
+	 * List of usable drivers (PHP extensions)
+	 *
+	 * @var	array
+	 */
+	protected $_drivers = array();
+
+	/**
+	 * List of available modes
+	 *
+	 * @var	array
+	 */
+	protected $_modes = array(
+		'mcrypt' => array(
+			'cbc' => 'cbc',
+			'ecb' => 'ecb',
+			'ofb' => 'nofb',
+			'ofb8' => 'ofb',
+			'cfb' => 'ncfb',
+			'cfb8' => 'cfb',
+			'ctr' => 'ctr',
+			'stream' => 'stream'
+		),
+		'openssl' => array(
+			'cbc' => 'cbc',
+			'ecb' => 'ecb',
+			'ofb' => 'ofb',
+			'cfb' => 'cfb',
+			'cfb8' => 'cfb8',
+			'ctr' => 'ctr',
+			'stream' => '',
+			'xts' => 'xts'
+		)
+	);
+
+	/**
+	 * List of supported HMAC algorithms
+	 *
+	 * name => digest size pairs
+	 *
+	 * @var	array
+	 */
+	protected $_digests = array(
+		'sha224' => 28,
+		'sha256' => 32,
+		'sha384' => 48,
+		'sha512' => 64
+	);
+
+	/**
+	 * mbstring.func_overload flag
+	 *
+	 * @var	bool
+	 */
+	protected static $func_overload;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(array $params = array())
+	{
+		$this->_drivers = array(
+			'mcrypt'  => defined('MCRYPT_DEV_URANDOM'),
+			'openssl' => extension_loaded('openssl')
+		);
+
+		if ( ! $this->_drivers['mcrypt'] && ! $this->_drivers['openssl'])
+		{
+			show_error('Encryption: Unable to find an available encryption driver.');
+		}
+
+		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+		$this->initialize($params);
+
+		if ( ! isset($this->_key) && self::strlen($key = config_item('encryption_key')) > 0)
+		{
+			$this->_key = $key;
+		}
+
+		log_message('info', 'Encryption Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	CI_Encryption
+	 */
+	public function initialize(array $params)
+	{
+		if ( ! empty($params['driver']))
+		{
+			if (isset($this->_drivers[$params['driver']]))
+			{
+				if ($this->_drivers[$params['driver']])
+				{
+					$this->_driver = $params['driver'];
+				}
+				else
+				{
+					log_message('error', "Encryption: Driver '".$params['driver']."' is not available.");
+				}
+			}
+			else
+			{
+				log_message('error', "Encryption: Unknown driver '".$params['driver']."' cannot be configured.");
+			}
+		}
+
+		if (empty($this->_driver))
+		{
+			$this->_driver = ($this->_drivers['openssl'] === TRUE)
+				? 'openssl'
+				: 'mcrypt';
+
+			log_message('debug', "Encryption: Auto-configured driver '".$this->_driver."'.");
+		}
+
+		empty($params['cipher']) && $params['cipher'] = $this->_cipher;
+		empty($params['key']) OR $this->_key = $params['key'];
+		$this->{'_'.$this->_driver.'_initialize'}($params);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize MCrypt
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	protected function _mcrypt_initialize($params)
+	{
+		if ( ! empty($params['cipher']))
+		{
+			$params['cipher'] = strtolower($params['cipher']);
+			$this->_cipher_alias($params['cipher']);
+
+			if ( ! in_array($params['cipher'], mcrypt_list_algorithms(), TRUE))
+			{
+				log_message('error', 'Encryption: MCrypt cipher '.strtoupper($params['cipher']).' is not available.');
+			}
+			else
+			{
+				$this->_cipher = $params['cipher'];
+			}
+		}
+
+		if ( ! empty($params['mode']))
+		{
+			$params['mode'] = strtolower($params['mode']);
+			if ( ! isset($this->_modes['mcrypt'][$params['mode']]))
+			{
+				log_message('error', 'Encryption: MCrypt mode '.strtoupper($params['mode']).' is not available.');
+			}
+			else
+			{
+				$this->_mode = $this->_modes['mcrypt'][$params['mode']];
+			}
+		}
+
+		if (isset($this->_cipher, $this->_mode))
+		{
+			if (is_resource($this->_handle)
+				&& (strtolower(mcrypt_enc_get_algorithms_name($this->_handle)) !== $this->_cipher
+					OR strtolower(mcrypt_enc_get_modes_name($this->_handle)) !== $this->_mode)
+			)
+			{
+				mcrypt_module_close($this->_handle);
+			}
+
+			if ($this->_handle = mcrypt_module_open($this->_cipher, '', $this->_mode, ''))
+			{
+				log_message('info', 'Encryption: MCrypt cipher '.strtoupper($this->_cipher).' initialized in '.strtoupper($this->_mode).' mode.');
+			}
+			else
+			{
+				log_message('error', 'Encryption: Unable to initialize MCrypt with cipher '.strtoupper($this->_cipher).' in '.strtoupper($this->_mode).' mode.');
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize OpenSSL
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	protected function _openssl_initialize($params)
+	{
+		if ( ! empty($params['cipher']))
+		{
+			$params['cipher'] = strtolower($params['cipher']);
+			$this->_cipher_alias($params['cipher']);
+			$this->_cipher = $params['cipher'];
+		}
+
+		if ( ! empty($params['mode']))
+		{
+			$params['mode'] = strtolower($params['mode']);
+			if ( ! isset($this->_modes['openssl'][$params['mode']]))
+			{
+				log_message('error', 'Encryption: OpenSSL mode '.strtoupper($params['mode']).' is not available.');
+			}
+			else
+			{
+				$this->_mode = $this->_modes['openssl'][$params['mode']];
+			}
+		}
+
+		if (isset($this->_cipher, $this->_mode))
+		{
+			// This is mostly for the stream mode, which doesn't get suffixed in OpenSSL
+			$handle = empty($this->_mode)
+				? $this->_cipher
+				: $this->_cipher.'-'.$this->_mode;
+
+			if ( ! in_array($handle, openssl_get_cipher_methods(), TRUE))
+			{
+				$this->_handle = NULL;
+				log_message('error', 'Encryption: Unable to initialize OpenSSL with method '.strtoupper($handle).'.');
+			}
+			else
+			{
+				$this->_handle = $handle;
+				log_message('info', 'Encryption: OpenSSL initialized with method '.strtoupper($handle).'.');
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create a random key
+	 *
+	 * @param	int	$length	Output length
+	 * @return	string
+	 */
+	public function create_key($length)
+	{
+		if (function_exists('random_bytes'))
+		{
+			try
+			{
+				return random_bytes((int) $length);
+			}
+			catch (Exception $e)
+			{
+				log_message('error', $e->getMessage());
+				return FALSE;
+			}
+		}
+		elseif (defined('MCRYPT_DEV_URANDOM'))
+		{
+			return mcrypt_create_iv($length, MCRYPT_DEV_URANDOM);
+		}
+
+		$is_secure = NULL;
+		$key = openssl_random_pseudo_bytes($length, $is_secure);
+		return ($is_secure === TRUE)
+			? $key
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encrypt
+	 *
+	 * @param	string	$data	Input data
+	 * @param	array	$params	Input parameters
+	 * @return	string
+	 */
+	public function encrypt($data, array $params = NULL)
+	{
+		if (($params = $this->_get_params($params)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		isset($params['key']) OR $params['key'] = $this->hkdf($this->_key, 'sha512', NULL, self::strlen($this->_key), 'encryption');
+
+		if (($data = $this->{'_'.$this->_driver.'_encrypt'}($data, $params)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$params['base64'] && $data = base64_encode($data);
+
+		if (isset($params['hmac_digest']))
+		{
+			isset($params['hmac_key']) OR $params['hmac_key'] = $this->hkdf($this->_key, 'sha512', NULL, NULL, 'authentication');
+			return hash_hmac($params['hmac_digest'], $data, $params['hmac_key'], ! $params['base64']).$data;
+		}
+
+		return $data;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encrypt via MCrypt
+	 *
+	 * @param	string	$data	Input data
+	 * @param	array	$params	Input parameters
+	 * @return	string
+	 */
+	protected function _mcrypt_encrypt($data, $params)
+	{
+		if ( ! is_resource($params['handle']))
+		{
+			return FALSE;
+		}
+
+		// The greater-than-1 comparison is mostly a work-around for a bug,
+		// where 1 is returned for ARCFour instead of 0.
+		$iv = (($iv_size = mcrypt_enc_get_iv_size($params['handle'])) > 1)
+			? $this->create_key($iv_size)
+			: NULL;
+
+		if (mcrypt_generic_init($params['handle'], $params['key'], $iv) < 0)
+		{
+			if ($params['handle'] !== $this->_handle)
+			{
+				mcrypt_module_close($params['handle']);
+			}
+
+			return FALSE;
+		}
+
+		// Use PKCS#7 padding in order to ensure compatibility with OpenSSL
+		// and other implementations outside of PHP.
+		if (in_array(strtolower(mcrypt_enc_get_modes_name($params['handle'])), array('cbc', 'ecb'), TRUE))
+		{
+			$block_size = mcrypt_enc_get_block_size($params['handle']);
+			$pad = $block_size - (self::strlen($data) % $block_size);
+			$data .= str_repeat(chr($pad), $pad);
+		}
+
+		// Work-around for yet another strange behavior in MCrypt.
+		//
+		// When encrypting in ECB mode, the IV is ignored. Yet
+		// mcrypt_enc_get_iv_size() returns a value larger than 0
+		// even if ECB is used AND mcrypt_generic_init() complains
+		// if you don't pass an IV with length equal to the said
+		// return value.
+		//
+		// This probably would've been fine (even though still wasteful),
+		// but OpenSSL isn't that dumb and we need to make the process
+		// portable, so ...
+		$data = (mcrypt_enc_get_modes_name($params['handle']) !== 'ECB')
+			? $iv.mcrypt_generic($params['handle'], $data)
+			: mcrypt_generic($params['handle'], $data);
+
+		mcrypt_generic_deinit($params['handle']);
+		if ($params['handle'] !== $this->_handle)
+		{
+			mcrypt_module_close($params['handle']);
+		}
+
+		return $data;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encrypt via OpenSSL
+	 *
+	 * @param	string	$data	Input data
+	 * @param	array	$params	Input parameters
+	 * @return	string
+	 */
+	protected function _openssl_encrypt($data, $params)
+	{
+		if (empty($params['handle']))
+		{
+			return FALSE;
+		}
+
+		$iv = ($iv_size = openssl_cipher_iv_length($params['handle']))
+			? $this->create_key($iv_size)
+			: NULL;
+
+		$data = openssl_encrypt(
+			$data,
+			$params['handle'],
+			$params['key'],
+			OPENSSL_RAW_DATA,
+			$iv
+		);
+
+		if ($data === FALSE)
+		{
+			return FALSE;
+		}
+
+		return $iv.$data;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decrypt
+	 *
+	 * @param	string	$data	Encrypted data
+	 * @param	array	$params	Input parameters
+	 * @return	string
+	 */
+	public function decrypt($data, array $params = NULL)
+	{
+		if (($params = $this->_get_params($params)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		if (isset($params['hmac_digest']))
+		{
+			// This might look illogical, but it is done during encryption as well ...
+			// The 'base64' value is effectively an inverted "raw data" parameter
+			$digest_size = ($params['base64'])
+				? $this->_digests[$params['hmac_digest']] * 2
+				: $this->_digests[$params['hmac_digest']];
+
+			if (self::strlen($data) <= $digest_size)
+			{
+				return FALSE;
+			}
+
+			$hmac_input = self::substr($data, 0, $digest_size);
+			$data = self::substr($data, $digest_size);
+
+			isset($params['hmac_key']) OR $params['hmac_key'] = $this->hkdf($this->_key, 'sha512', NULL, NULL, 'authentication');
+			$hmac_check = hash_hmac($params['hmac_digest'], $data, $params['hmac_key'], ! $params['base64']);
+
+			// Time-attack-safe comparison
+			$diff = 0;
+			for ($i = 0; $i < $digest_size; $i++)
+			{
+				$diff |= ord($hmac_input[$i]) ^ ord($hmac_check[$i]);
+			}
+
+			if ($diff !== 0)
+			{
+				return FALSE;
+			}
+		}
+
+		if ($params['base64'])
+		{
+			$data = base64_decode($data);
+		}
+
+		isset($params['key']) OR $params['key'] = $this->hkdf($this->_key, 'sha512', NULL, self::strlen($this->_key), 'encryption');
+
+		return $this->{'_'.$this->_driver.'_decrypt'}($data, $params);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decrypt via MCrypt
+	 *
+	 * @param	string	$data	Encrypted data
+	 * @param	array	$params	Input parameters
+	 * @return	string
+	 */
+	protected function _mcrypt_decrypt($data, $params)
+	{
+		if ( ! is_resource($params['handle']))
+		{
+			return FALSE;
+		}
+
+		// The greater-than-1 comparison is mostly a work-around for a bug,
+		// where 1 is returned for ARCFour instead of 0.
+		if (($iv_size = mcrypt_enc_get_iv_size($params['handle'])) > 1)
+		{
+			if (mcrypt_enc_get_modes_name($params['handle']) !== 'ECB')
+			{
+				$iv = self::substr($data, 0, $iv_size);
+				$data = self::substr($data, $iv_size);
+			}
+			else
+			{
+				// MCrypt is dumb and this is ignored, only size matters
+				$iv = str_repeat("\x0", $iv_size);
+			}
+		}
+		else
+		{
+			$iv = NULL;
+		}
+
+		if (mcrypt_generic_init($params['handle'], $params['key'], $iv) < 0)
+		{
+			if ($params['handle'] !== $this->_handle)
+			{
+				mcrypt_module_close($params['handle']);
+			}
+
+			return FALSE;
+		}
+
+		$data = mdecrypt_generic($params['handle'], $data);
+		// Remove PKCS#7 padding, if necessary
+		if (in_array(strtolower(mcrypt_enc_get_modes_name($params['handle'])), array('cbc', 'ecb'), TRUE))
+		{
+			$data = self::substr($data, 0, -ord($data[self::strlen($data)-1]));
+		}
+
+		mcrypt_generic_deinit($params['handle']);
+		if ($params['handle'] !== $this->_handle)
+		{
+			mcrypt_module_close($params['handle']);
+		}
+
+		return $data;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decrypt via OpenSSL
+	 *
+	 * @param	string	$data	Encrypted data
+	 * @param	array	$params	Input parameters
+	 * @return	string
+	 */
+	protected function _openssl_decrypt($data, $params)
+	{
+		if ($iv_size = openssl_cipher_iv_length($params['handle']))
+		{
+			$iv = self::substr($data, 0, $iv_size);
+			$data = self::substr($data, $iv_size);
+		}
+		else
+		{
+			$iv = NULL;
+		}
+
+		return empty($params['handle'])
+			? FALSE
+			: openssl_decrypt(
+				$data,
+				$params['handle'],
+				$params['key'],
+				OPENSSL_RAW_DATA,
+				$iv
+			);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get params
+	 *
+	 * @param	array	$params	Input parameters
+	 * @return	array
+	 */
+	protected function _get_params($params)
+	{
+		if (empty($params))
+		{
+			return isset($this->_cipher, $this->_mode, $this->_key, $this->_handle)
+				? array(
+					'handle' => $this->_handle,
+					'cipher' => $this->_cipher,
+					'mode' => $this->_mode,
+					'key' => NULL,
+					'base64' => TRUE,
+					'hmac_digest' => 'sha512',
+					'hmac_key' => NULL
+				)
+				: FALSE;
+		}
+		elseif ( ! isset($params['cipher'], $params['mode'], $params['key']))
+		{
+			return FALSE;
+		}
+
+		if (isset($params['mode']))
+		{
+			$params['mode'] = strtolower($params['mode']);
+			if ( ! isset($this->_modes[$this->_driver][$params['mode']]))
+			{
+				return FALSE;
+			}
+
+			$params['mode'] = $this->_modes[$this->_driver][$params['mode']];
+		}
+
+		if (isset($params['hmac']) && $params['hmac'] === FALSE)
+		{
+			$params['hmac_digest'] = $params['hmac_key'] = NULL;
+		}
+		else
+		{
+			if ( ! isset($params['hmac_key']))
+			{
+				return FALSE;
+			}
+			elseif (isset($params['hmac_digest']))
+			{
+				$params['hmac_digest'] = strtolower($params['hmac_digest']);
+				if ( ! isset($this->_digests[$params['hmac_digest']]))
+				{
+					return FALSE;
+				}
+			}
+			else
+			{
+				$params['hmac_digest'] = 'sha512';
+			}
+		}
+
+		$params = array(
+			'handle' => NULL,
+			'cipher' => $params['cipher'],
+			'mode' => $params['mode'],
+			'key' => $params['key'],
+			'base64' => isset($params['raw_data']) ? ! $params['raw_data'] : FALSE,
+			'hmac_digest' => $params['hmac_digest'],
+			'hmac_key' => $params['hmac_key']
+		);
+
+		$this->_cipher_alias($params['cipher']);
+		$params['handle'] = ($params['cipher'] !== $this->_cipher OR $params['mode'] !== $this->_mode)
+			? $this->{'_'.$this->_driver.'_get_handle'}($params['cipher'], $params['mode'])
+			: $this->_handle;
+
+		return $params;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get MCrypt handle
+	 *
+	 * @param	string	$cipher	Cipher name
+	 * @param	string	$mode	Encryption mode
+	 * @return	resource
+	 */
+	protected function _mcrypt_get_handle($cipher, $mode)
+	{
+		return mcrypt_module_open($cipher, '', $mode, '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get OpenSSL handle
+	 *
+	 * @param	string	$cipher	Cipher name
+	 * @param	string	$mode	Encryption mode
+	 * @return	string
+	 */
+	protected function _openssl_get_handle($cipher, $mode)
+	{
+		// OpenSSL methods aren't suffixed with '-stream' for this mode
+		return ($mode === 'stream')
+			? $cipher
+			: $cipher.'-'.$mode;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Cipher alias
+	 *
+	 * Tries to translate cipher names between MCrypt and OpenSSL's "dialects".
+	 *
+	 * @param	string	$cipher	Cipher name
+	 * @return	void
+	 */
+	protected function _cipher_alias(&$cipher)
+	{
+		static $dictionary;
+
+		if (empty($dictionary))
+		{
+			$dictionary = array(
+				'mcrypt' => array(
+					'aes-128' => 'rijndael-128',
+					'aes-192' => 'rijndael-128',
+					'aes-256' => 'rijndael-128',
+					'des3-ede3' => 'tripledes',
+					'bf' => 'blowfish',
+					'cast5' => 'cast-128',
+					'rc4' => 'arcfour',
+					'rc4-40' => 'arcfour'
+				),
+				'openssl' => array(
+					'rijndael-128' => 'aes-128',
+					'tripledes' => 'des-ede3',
+					'blowfish' => 'bf',
+					'cast-128' => 'cast5',
+					'arcfour' => 'rc4-40',
+					'rc4' => 'rc4-40'
+				)
+			);
+
+			// Notes:
+			//
+			// - Rijndael-128 is, at the same time all three of AES-128,
+			//   AES-192 and AES-256. The only difference between them is
+			//   the key size. Rijndael-192, Rijndael-256 on the other hand
+			//   also have different block sizes and are NOT AES-compatible.
+			//
+			// - Blowfish is said to be supporting key sizes between
+			//   4 and 56 bytes, but it appears that between MCrypt and
+			//   OpenSSL, only those of 16 and more bytes are compatible.
+			//   Also, don't know what MCrypt's 'blowfish-compat' is.
+			//
+			// - CAST-128/CAST5 produces a longer cipher when encrypted via
+			//   OpenSSL, but (strangely enough) can be decrypted by either
+			//   extension anyway.
+			//   Also, it appears that OpenSSL uses 16 rounds regardless of
+			//   the key size, while RFC2144 says that for key sizes lower
+			//   than 11 bytes, only 12 rounds should be used. This makes
+			//   it portable only with keys of between 11 and 16 bytes.
+			//
+			// - RC4 (ARCFour) has a strange implementation under OpenSSL.
+			//   Its 'rc4-40' cipher method seems to work flawlessly, yet
+			//   there's another one, 'rc4' that only works with a 16-byte key.
+			//
+			// - DES is compatible, but doesn't need an alias.
+			//
+			// Other seemingly matching ciphers between MCrypt, OpenSSL:
+			//
+			// - RC2 is NOT compatible and only an obscure forum post
+			//   confirms that it is MCrypt's fault.
+		}
+
+		if (isset($dictionary[$this->_driver][$cipher]))
+		{
+			$cipher = $dictionary[$this->_driver][$cipher];
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * HKDF
+	 *
+	 * @link	https://tools.ietf.org/rfc/rfc5869.txt
+	 * @param	$key	Input key
+	 * @param	$digest	A SHA-2 hashing algorithm
+	 * @param	$salt	Optional salt
+	 * @param	$length	Output length (defaults to the selected digest size)
+	 * @param	$info	Optional context/application-specific info
+	 * @return	string	A pseudo-random key
+	 */
+	public function hkdf($key, $digest = 'sha512', $salt = NULL, $length = NULL, $info = '')
+	{
+		if ( ! isset($this->_digests[$digest]))
+		{
+			return FALSE;
+		}
+
+		if (empty($length) OR ! is_int($length))
+		{
+			$length = $this->_digests[$digest];
+		}
+		elseif ($length > (255 * $this->_digests[$digest]))
+		{
+			return FALSE;
+		}
+
+		self::strlen($salt) OR $salt = str_repeat("\0", $this->_digests[$digest]);
+
+		$prk = hash_hmac($digest, $key, $salt, TRUE);
+		$key = '';
+		for ($key_block = '', $block_index = 1; self::strlen($key) < $length; $block_index++)
+		{
+			$key_block = hash_hmac($digest, $key_block.$info.chr($block_index), $prk, TRUE);
+			$key .= $key_block;
+		}
+
+		return self::substr($key, 0, $length);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * __get() magic
+	 *
+	 * @param	string	$key	Property name
+	 * @return	mixed
+	 */
+	public function __get($key)
+	{
+		// Because aliases
+		if ($key === 'mode')
+		{
+			return array_search($this->_mode, $this->_modes[$this->_driver], TRUE);
+		}
+		elseif (in_array($key, array('cipher', 'driver', 'drivers', 'digests'), TRUE))
+		{
+			return $this->{'_'.$key};
+		}
+
+		return NULL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return (self::$func_overload)
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe substr()
+	 *
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int	$length
+	 * @return	string
+	 */
+	protected static function substr($str, $start, $length = NULL)
+	{
+		if (self::$func_overload)
+		{
+			return mb_substr($str, $start, $length, '8bit');
+		}
+
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
new file mode 100644
index 00000000..32cdc6bd
--- /dev/null
+++ b/system/libraries/Form_validation.php
@@ -0,0 +1,1592 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Form Validation Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Validation
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/form_validation.html
+ */
+class CI_Form_validation {
+
+	/**
+	 * Reference to the CodeIgniter instance
+	 *
+	 * @var object
+	 */
+	protected $CI;
+
+	/**
+	 * Validation data for the current form submission
+	 *
+	 * @var array
+	 */
+	protected $_field_data		= array();
+
+	/**
+	 * Validation rules for the current form
+	 *
+	 * @var array
+	 */
+	protected $_config_rules	= array();
+
+	/**
+	 * Array of validation errors
+	 *
+	 * @var array
+	 */
+	protected $_error_array		= array();
+
+	/**
+	 * Array of custom error messages
+	 *
+	 * @var array
+	 */
+	protected $_error_messages	= array();
+
+	/**
+	 * Start tag for error wrapping
+	 *
+	 * @var string
+	 */
+	protected $_error_prefix	= '<p>';
+
+	/**
+	 * End tag for error wrapping
+	 *
+	 * @var string
+	 */
+	protected $_error_suffix	= '</p>';
+
+	/**
+	 * Custom error message
+	 *
+	 * @var string
+	 */
+	protected $error_string		= '';
+
+	/**
+	 * Custom data to validate
+	 *
+	 * @var array
+	 */
+	public $validation_data	= array();
+
+	/**
+	 * Initialize Form_Validation class
+	 *
+	 * @param	array	$rules
+	 * @return	void
+	 */
+	public function __construct($rules = array())
+	{
+		$this->CI =& get_instance();
+
+		// applies delimiters set in config file.
+		if (isset($rules['error_prefix']))
+		{
+			$this->_error_prefix = $rules['error_prefix'];
+			unset($rules['error_prefix']);
+		}
+		if (isset($rules['error_suffix']))
+		{
+			$this->_error_suffix = $rules['error_suffix'];
+			unset($rules['error_suffix']);
+		}
+
+		// Validation rules can be stored in a config file.
+		$this->_config_rules = $rules;
+
+		// Automatically load the form helper
+		$this->CI->load->helper('form');
+
+		log_message('info', 'Form Validation Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Rules
+	 *
+	 * This function takes an array of field names and validation
+	 * rules as input, any custom error messages, validates the info,
+	 * and stores it
+	 *
+	 * @param	mixed	$field
+	 * @param	string	$label
+	 * @param	mixed	$rules
+	 * @param	array	$errors
+	 * @return	CI_Form_validation
+	 */
+	public function set_rules($field, $label = null, $rules = null, $errors = array())
+	{
+		// No reason to set rules if we have no POST data
+		// or a validation array has not been specified
+		if ($this->CI->input->method() !== 'post' && empty($this->validation_data))
+		{
+			return $this;
+		}
+
+		// If an array was passed via the first parameter instead of individual string
+		// values we cycle through it and recursively call this function.
+		if (is_array($field))
+		{
+			foreach ($field as $row)
+			{
+				// Houston, we have a problem...
+				if ( ! isset($row['field'], $row['rules']))
+				{
+					continue;
+				}
+
+				// If the field label wasn't passed we use the field name
+				$label = isset($row['label']) ? $row['label'] : $row['field'];
+
+				// Add the custom error message array
+				$errors = (isset($row['errors']) && is_array($row['errors'])) ? $row['errors'] : array();
+
+				// Here we go!
+				$this->set_rules($row['field'], $label, $row['rules'], $errors);
+			}
+
+			return $this;
+		}
+		elseif ( ! isset($rules))
+		{
+			throw new BadMethodCallException('Form_validation: set_rules() called without a $rules parameter');
+		}
+
+		// No fields or no rules? Nothing to do...
+		if ( ! is_string($field) OR $field === '' OR empty($rules))
+		{
+			throw new RuntimeException('Form_validation: set_rules() called with an empty $rules parameter');
+		}
+		elseif ( ! is_array($rules))
+		{
+			// BC: Convert pipe-separated rules string to an array
+			if ( ! is_string($rules))
+			{
+				throw new InvalidArgumentException('Form_validation: set_rules() expect $rules to be string or array; '.gettype($rules).' given');
+			}
+
+			$rules = preg_split('/\|(?![^\[]*\])/', $rules);
+		}
+
+		// If the field label wasn't passed we use the field name
+		$label = ($label === '') ? $field : $label;
+
+		$indexes = array();
+
+		// Is the field name an array? If it is an array, we break it apart
+		// into its components so that we can fetch the corresponding POST data later
+		if (($is_array = (bool) preg_match_all('/\[(.*?)\]/', $field, $matches)) === TRUE)
+		{
+			sscanf($field, '%[^[][', $indexes[0]);
+
+			for ($i = 0, $c = count($matches[0]); $i < $c; $i++)
+			{
+				if ($matches[1][$i] !== '')
+				{
+					$indexes[] = $matches[1][$i];
+				}
+			}
+		}
+
+		// Build our master array
+		$this->_field_data[$field] = array(
+			'field'		=> $field,
+			'label'		=> $label,
+			'rules'		=> $rules,
+			'errors'	=> $errors,
+			'is_array'	=> $is_array,
+			'keys'		=> $indexes,
+			'postdata'	=> NULL,
+			'error'		=> ''
+		);
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * By default, form validation uses the $_POST array to validate
+	 *
+	 * If an array is set through this method, then this array will
+	 * be used instead of the $_POST array
+	 *
+	 * Note that if you are validating multiple arrays, then the
+	 * reset_validation() function should be called after validating
+	 * each array due to the limitations of CI's singleton
+	 *
+	 * @param	array	$data
+	 * @return	CI_Form_validation
+	 */
+	public function set_data(array $data)
+	{
+		if ( ! empty($data))
+		{
+			$this->validation_data = $data;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Error Message
+	 *
+	 * Lets users set their own error messages on the fly. Note:
+	 * The key name has to match the function name that it corresponds to.
+	 *
+	 * @param	array
+	 * @param	string
+	 * @return	CI_Form_validation
+	 */
+	public function set_message($lang, $val = '')
+	{
+		if ( ! is_array($lang))
+		{
+			$lang = array($lang => $val);
+		}
+
+		$this->_error_messages = array_merge($this->_error_messages, $lang);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set The Error Delimiter
+	 *
+	 * Permits a prefix/suffix to be added to each error message
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	CI_Form_validation
+	 */
+	public function set_error_delimiters($prefix = '<p>', $suffix = '</p>')
+	{
+		$this->_error_prefix = $prefix;
+		$this->_error_suffix = $suffix;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Error Message
+	 *
+	 * Gets the error message associated with a particular field
+	 *
+	 * @param	string	$field	Field name
+	 * @param	string	$prefix	HTML start tag
+	 * @param 	string	$suffix	HTML end tag
+	 * @return	string
+	 */
+	public function error($field, $prefix = '', $suffix = '')
+	{
+		if (empty($this->_field_data[$field]['error']))
+		{
+			return '';
+		}
+
+		if ($prefix === '')
+		{
+			$prefix = $this->_error_prefix;
+		}
+
+		if ($suffix === '')
+		{
+			$suffix = $this->_error_suffix;
+		}
+
+		return $prefix.$this->_field_data[$field]['error'].$suffix;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Array of Error Messages
+	 *
+	 * Returns the error messages as an array
+	 *
+	 * @return	array
+	 */
+	public function error_array()
+	{
+		return $this->_error_array;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error String
+	 *
+	 * Returns the error messages as a string, wrapped in the error delimiters
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	public function error_string($prefix = '', $suffix = '')
+	{
+		// No errors, validation passes!
+		if (count($this->_error_array) === 0)
+		{
+			return '';
+		}
+
+		if ($prefix === '')
+		{
+			$prefix = $this->_error_prefix;
+		}
+
+		if ($suffix === '')
+		{
+			$suffix = $this->_error_suffix;
+		}
+
+		// Generate the error string
+		$str = '';
+		foreach ($this->_error_array as $val)
+		{
+			if ($val !== '')
+			{
+				$str .= $prefix.$val.$suffix."\n";
+			}
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Run the Validator
+	 *
+	 * This function does all the work.
+	 *
+	 * @param	string	$config
+	 * @param	array	$data
+	 * @return	bool
+	 */
+	public function run($config = NULL, &$data = NULL)
+	{
+		$validation_array = empty($this->validation_data)
+			? $_POST
+			: $this->validation_data;
+
+		// Does the _field_data array containing the validation rules exist?
+		// If not, we look to see if they were assigned via a config file
+		if (count($this->_field_data) === 0)
+		{
+			// No validation rules?  We're done...
+			if (empty($this->_config_rules))
+			{
+				return FALSE;
+			}
+
+			if (empty($config))
+			{
+				// Is there a validation rule for the particular URI being accessed?
+				$config = trim($this->CI->uri->ruri_string(), '/');
+				isset($this->_config_rules[$config]) OR $config = $this->CI->router->class.'/'.$this->CI->router->method;
+			}
+
+			$this->set_rules(isset($this->_config_rules[$config]) ? $this->_config_rules[$config] : $this->_config_rules);
+
+			// Were we able to set the rules correctly?
+			if (count($this->_field_data) === 0)
+			{
+				log_message('debug', 'Unable to find validation rules');
+				return FALSE;
+			}
+		}
+
+		// Load the language file containing error messages
+		$this->CI->lang->load('form_validation');
+
+		// Cycle through the rules for each field and match the corresponding $validation_data item
+		foreach ($this->_field_data as $field => &$row)
+		{
+			// Fetch the data from the validation_data array item and cache it in the _field_data array.
+			// Depending on whether the field name is an array or a string will determine where we get it from.
+			if ($row['is_array'] === TRUE)
+			{
+				$this->_field_data[$field]['postdata'] = $this->_reduce_array($validation_array, $row['keys']);
+			}
+			elseif (isset($validation_array[$field]))
+			{
+				$this->_field_data[$field]['postdata'] = $validation_array[$field];
+			}
+		}
+
+		// Execute validation rules
+		// Note: A second foreach (for now) is required in order to avoid false-positives
+		//	 for rules like 'matches', which correlate to other validation fields.
+		foreach ($this->_field_data as $field => &$row)
+		{
+			// Don't try to validate if we have no rules set
+			if (empty($row['rules']))
+			{
+				continue;
+			}
+
+			$this->_execute($row, $row['rules'], $row['postdata']);
+		}
+
+		if ( ! empty($this->_error_array))
+		{
+			return FALSE;
+		}
+
+		// Fill $data if requested, otherwise modify $_POST, as long as
+		// set_data() wasn't used (yea, I know it sounds confusing)
+		if (func_num_args() >= 2)
+		{
+			$data = empty($this->validation_data) ? $_POST : $this->validation_data;
+			$this->_reset_data_array($data);
+			return TRUE;
+		}
+
+		empty($this->validation_data) && $this->_reset_data_array($_POST);
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prepare rules
+	 *
+	 * Re-orders the provided rules in order of importance, so that
+	 * they can easily be executed later without weird checks ...
+	 *
+	 * "Callbacks" are given the highest priority (always called),
+	 * followed by 'required' (called if callbacks didn't fail),
+	 * and then every next rule depends on the previous one passing.
+	 *
+	 * @param	array	$rules
+	 * @return	array
+	 */
+	protected function _prepare_rules($rules)
+	{
+		$new_rules = array();
+		$callbacks = array();
+
+		foreach ($rules as &$rule)
+		{
+			// Let 'required' always be the first (non-callback) rule
+			if ($rule === 'required')
+			{
+				array_unshift($new_rules, 'required');
+			}
+			// 'isset' is a kind of a weird alias for 'required' ...
+			elseif ($rule === 'isset' && (empty($new_rules) OR $new_rules[0] !== 'required'))
+			{
+				array_unshift($new_rules, 'isset');
+			}
+			// The old/classic 'callback_'-prefixed rules
+			elseif (is_string($rule) && strncmp('callback_', $rule, 9) === 0)
+			{
+				$callbacks[] = $rule;
+			}
+			// Proper callables
+			elseif (is_callable($rule))
+			{
+				$callbacks[] = $rule;
+			}
+			// "Named" callables; i.e. array('name' => $callable)
+			elseif (is_array($rule) && isset($rule[0], $rule[1]) && is_callable($rule[1]))
+			{
+				$callbacks[] = $rule;
+			}
+			// Everything else goes at the end of the queue
+			else
+			{
+				$new_rules[] = $rule;
+			}
+		}
+
+		return array_merge($callbacks, $new_rules);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Traverse a multidimensional $_POST array index until the data is found
+	 *
+	 * @param	array
+	 * @param	array
+	 * @param	int
+	 * @return	mixed
+	 */
+	protected function _reduce_array($array, $keys, $i = 0)
+	{
+		if (is_array($array) && isset($keys[$i]))
+		{
+			return isset($array[$keys[$i]]) ? $this->_reduce_array($array[$keys[$i]], $keys, ($i+1)) : NULL;
+		}
+
+		// NULL must be returned for empty fields
+		return ($array === '') ? NULL : $array;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Re-populate the _POST array with our finalized and processed data
+	 *
+	 * @return	void
+	 */
+	protected function _reset_data_array(&$data)
+	{
+		foreach ($this->_field_data as $field => $row)
+		{
+			if ($row['postdata'] !== NULL)
+			{
+				if ($row['is_array'] === FALSE)
+				{
+					isset($data[$field]) && $data[$field] = is_array($row['postdata']) ? NULL : $row['postdata'];
+				}
+				else
+				{
+					$data_ref =& $data;
+
+					// before we assign values, make a reference to the right POST key
+					if (count($row['keys']) === 1)
+					{
+						$data_ref =& $data[current($row['keys'])];
+					}
+					else
+					{
+						foreach ($row['keys'] as $val)
+						{
+							$data_ref =& $data_ref[$val];
+						}
+					}
+
+					$data_ref = $row['postdata'];
+				}
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Executes the Validation routines
+	 *
+	 * @param	array
+	 * @param	array
+	 * @param	mixed
+	 * @param	int
+	 * @return	mixed
+	 */
+	protected function _execute($row, $rules, $postdata = NULL, $cycles = 0)
+	{
+		$allow_arrays = in_array('is_array', $rules, TRUE);
+
+		// If the $_POST data is an array we will run a recursive call
+		//
+		// Note: We MUST check if the array is empty or not!
+		//       Otherwise empty arrays will always pass validation.
+		if ($allow_arrays === FALSE && is_array($postdata) && ! empty($postdata))
+		{
+			foreach ($postdata as $key => $val)
+			{
+				$this->_execute($row, $rules, $val, $key);
+			}
+
+			return;
+		}
+
+		$rules = $this->_prepare_rules($rules);
+		foreach ($rules as $rule)
+		{
+			$_in_array = FALSE;
+
+			// We set the $postdata variable with the current data in our master array so that
+			// each cycle of the loop is dealing with the processed data from the last cycle
+			if ($row['is_array'] === TRUE && is_array($this->_field_data[$row['field']]['postdata']))
+			{
+				// We shouldn't need this safety, but just in case there isn't an array index
+				// associated with this cycle we'll bail out
+				if ( ! isset($this->_field_data[$row['field']]['postdata'][$cycles]))
+				{
+					continue;
+				}
+
+				$postdata = $this->_field_data[$row['field']]['postdata'][$cycles];
+				$_in_array = TRUE;
+			}
+			// If we get an array field, but it's not expected - then it is most likely
+			// somebody messing with the form on the client side, so we'll just consider
+			// it an empty field
+			elseif ($allow_arrays === FALSE && is_array($this->_field_data[$row['field']]['postdata']))
+			{
+				$postdata = NULL;
+			}
+			else
+			{
+				$postdata = $this->_field_data[$row['field']]['postdata'];
+			}
+
+			// Is the rule a callback?
+			$callback = $callable = FALSE;
+			if (is_string($rule))
+			{
+				if (strpos($rule, 'callback_') === 0)
+				{
+					$rule = substr($rule, 9);
+					$callback = TRUE;
+				}
+			}
+			elseif (is_callable($rule))
+			{
+				$callable = TRUE;
+			}
+			elseif (is_array($rule) && isset($rule[0], $rule[1]) && is_callable($rule[1]))
+			{
+				// We have a "named" callable, so save the name
+				$callable = $rule[0];
+				$rule = $rule[1];
+			}
+
+			// Strip the parameter (if exists) from the rule
+			// Rules can contain a parameter: max_length[5]
+			$param = FALSE;
+			if ( ! $callable && preg_match('/(.*?)\[(.*)\]/', $rule, $match))
+			{
+				$rule = $match[1];
+				$param = $match[2];
+			}
+
+			// Ignore empty, non-required inputs with a few exceptions ...
+			if (
+				($postdata === NULL OR ($allow_arrays === FALSE && $postdata === ''))
+				&& $callback === FALSE
+				&& $callable === FALSE
+				&& ! in_array($rule, array('required', 'isset', 'matches'), TRUE)
+			)
+			{
+				continue;
+			}
+
+			// Call the function that corresponds to the rule
+			if ($callback OR $callable !== FALSE)
+			{
+				if ($callback)
+				{
+					if ( ! method_exists($this->CI, $rule))
+					{
+						log_message('debug', 'Unable to find callback validation rule: '.$rule);
+						$result = FALSE;
+					}
+					else
+					{
+						// Run the function and grab the result
+						$result = $this->CI->$rule($postdata, $param);
+					}
+				}
+				else
+				{
+					$result = is_array($rule)
+						? $rule[0]->{$rule[1]}($postdata)
+						: $rule($postdata);
+
+					// Is $callable set to a rule name?
+					if ($callable !== FALSE)
+					{
+						$rule = $callable;
+					}
+				}
+
+				// Re-assign the result to the master data array
+				if ($_in_array === TRUE)
+				{
+					$this->_field_data[$row['field']]['postdata'][$cycles] = is_bool($result) ? $postdata : $result;
+				}
+				else
+				{
+					$this->_field_data[$row['field']]['postdata'] = is_bool($result) ? $postdata : $result;
+				}
+			}
+			elseif ( ! method_exists($this, $rule))
+			{
+				// If our own wrapper function doesn't exist we see if a native PHP function does.
+				// Users can use any native PHP function call that has one param.
+				if (function_exists($rule))
+				{
+					// Native PHP functions issue warnings if you pass them more parameters than they use
+					$result = ($param !== FALSE) ? $rule($postdata, $param) : $rule($postdata);
+
+					if ($_in_array === TRUE)
+					{
+						$this->_field_data[$row['field']]['postdata'][$cycles] = is_bool($result) ? $postdata : $result;
+					}
+					else
+					{
+						$this->_field_data[$row['field']]['postdata'] = is_bool($result) ? $postdata : $result;
+					}
+				}
+				else
+				{
+					log_message('debug', 'Unable to find validation rule: '.$rule);
+					$result = FALSE;
+				}
+			}
+			else
+			{
+				$result = $this->$rule($postdata, $param);
+
+				if ($_in_array === TRUE)
+				{
+					$this->_field_data[$row['field']]['postdata'][$cycles] = is_bool($result) ? $postdata : $result;
+				}
+				else
+				{
+					$this->_field_data[$row['field']]['postdata'] = is_bool($result) ? $postdata : $result;
+				}
+			}
+
+			// Did the rule test negatively? If so, grab the error.
+			if ($result === FALSE)
+			{
+				// Callable rules might not have named error messages
+				if ( ! is_string($rule))
+				{
+					$line = $this->CI->lang->line('form_validation_error_message_not_set').'(Anonymous function)';
+				}
+				else
+				{
+					$line = $this->_get_error_message($rule, $row['field']);
+				}
+
+				// Is the parameter we are inserting into the error message the name
+				// of another field? If so we need to grab its "field label"
+				if (isset($this->_field_data[$param], $this->_field_data[$param]['label']))
+				{
+					$param = $this->_translate_fieldname($this->_field_data[$param]['label']);
+				}
+
+				// Build the error message
+				$message = $this->_build_error_msg($line, $this->_translate_fieldname($row['label']), $param);
+
+				// Save the error message
+				$this->_field_data[$row['field']]['error'] = $message;
+
+				if ( ! isset($this->_error_array[$row['field']]))
+				{
+					$this->_error_array[$row['field']] = $message;
+				}
+
+				return;
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the error message for the rule
+	 *
+	 * @param 	string $rule 	The rule name
+	 * @param 	string $field	The field name
+	 * @return 	string
+	 */
+	protected function _get_error_message($rule, $field)
+	{
+		// check if a custom message is defined through validation config row.
+		if (isset($this->_field_data[$field]['errors'][$rule]))
+		{
+			return $this->_field_data[$field]['errors'][$rule];
+		}
+		// check if a custom message has been set using the set_message() function
+		elseif (isset($this->_error_messages[$rule]))
+		{
+			return $this->_error_messages[$rule];
+		}
+		elseif (FALSE !== ($line = $this->CI->lang->line('form_validation_'.$rule)))
+		{
+			return $line;
+		}
+		// DEPRECATED support for non-prefixed keys, lang file again
+		elseif (FALSE !== ($line = $this->CI->lang->line($rule, FALSE)))
+		{
+			return $line;
+		}
+
+		return $this->CI->lang->line('form_validation_error_message_not_set').'('.$rule.')';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Translate a field name
+	 *
+	 * @param	string	the field name
+	 * @return	string
+	 */
+	protected function _translate_fieldname($fieldname)
+	{
+		// Do we need to translate the field name? We look for the prefix 'lang:' to determine this
+		// If we find one, but there's no translation for the string - just return it
+		if (sscanf($fieldname, 'lang:%s', $line) === 1 && FALSE === ($fieldname = $this->CI->lang->line($line, FALSE)))
+		{
+			return $line;
+		}
+
+		return $fieldname;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Build an error message using the field and param.
+	 *
+	 * @param	string	The error message line
+	 * @param	string	A field's human name
+	 * @param	mixed	A rule's optional parameter
+	 * @return	string
+	 */
+	protected function _build_error_msg($line, $field = '', $param = '')
+	{
+		// Check for %s in the string for legacy support.
+		if (strpos($line, '%s') !== FALSE)
+		{
+			return sprintf($line, $field, $param);
+		}
+
+		return str_replace(array('{field}', '{param}'), array($field, $param), $line);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Checks if the rule is present within the validator
+	 *
+	 * Permits you to check if a rule is present within the validator
+	 *
+	 * @param	string	the field name
+	 * @return	bool
+	 */
+	public function has_rule($field)
+	{
+		return isset($this->_field_data[$field]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the value from a form
+	 *
+	 * Permits you to repopulate a form field with the value it was submitted
+	 * with, or, if that value doesn't exist, with the default
+	 *
+	 * @param	string	the field name
+	 * @param	string
+	 * @return	string
+	 */
+	public function set_value($field = '', $default = '')
+	{
+		if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
+		{
+			return $default;
+		}
+
+		// If the data is an array output them one at a time.
+		//	E.g: form_input('name[]', set_value('name[]');
+		if (is_array($this->_field_data[$field]['postdata']))
+		{
+			return array_shift($this->_field_data[$field]['postdata']);
+		}
+
+		return $this->_field_data[$field]['postdata'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Select
+	 *
+	 * Enables pull-down lists to be set to the value the user
+	 * selected in the event of an error
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	public function set_select($field = '', $value = '', $default = FALSE)
+	{
+		if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
+		{
+			return ($default === TRUE && count($this->_field_data) === 0) ? ' selected="selected"' : '';
+		}
+
+		$field = $this->_field_data[$field]['postdata'];
+		$value = (string) $value;
+		if (is_array($field))
+		{
+			// Note: in_array('', array(0)) returns TRUE, do not use it
+			foreach ($field as &$v)
+			{
+				if ($value === $v)
+				{
+					return ' selected="selected"';
+				}
+			}
+
+			return '';
+		}
+		elseif (($field === '' OR $value === '') OR ($field !== $value))
+		{
+			return '';
+		}
+
+		return ' selected="selected"';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Radio
+	 *
+	 * Enables radio buttons to be set to the value the user
+	 * selected in the event of an error
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	public function set_radio($field = '', $value = '', $default = FALSE)
+	{
+		if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
+		{
+			return ($default === TRUE && count($this->_field_data) === 0) ? ' checked="checked"' : '';
+		}
+
+		$field = $this->_field_data[$field]['postdata'];
+		$value = (string) $value;
+		if (is_array($field))
+		{
+			// Note: in_array('', array(0)) returns TRUE, do not use it
+			foreach ($field as &$v)
+			{
+				if ($value === $v)
+				{
+					return ' checked="checked"';
+				}
+			}
+
+			return '';
+		}
+		elseif (($field === '' OR $value === '') OR ($field !== $value))
+		{
+			return '';
+		}
+
+		return ' checked="checked"';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Checkbox
+	 *
+	 * Enables checkboxes to be set to the value the user
+	 * selected in the event of an error
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	public function set_checkbox($field = '', $value = '', $default = FALSE)
+	{
+		// Logic is exactly the same as for radio fields
+		return $this->set_radio($field, $value, $default);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Required
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function required($str)
+	{
+		return is_array($str)
+			? (empty($str) === FALSE)
+			: (trim($str) !== '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Performs a Regular Expression match test.
+	 *
+	 * @param	string
+	 * @param	string	regex
+	 * @return	bool
+	 */
+	public function regex_match($str, $regex)
+	{
+		return (bool) preg_match($regex, $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Match one field to another
+	 *
+	 * @param	string	$str	string to compare against
+	 * @param	string	$field
+	 * @return	bool
+	 */
+	public function matches($str, $field)
+	{
+		return isset($this->_field_data[$field], $this->_field_data[$field]['postdata'])
+			? ($str === $this->_field_data[$field]['postdata'])
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Differs from another field
+	 *
+	 * @param	string
+	 * @param	string	field
+	 * @return	bool
+	 */
+	public function differs($str, $field)
+	{
+		return ! (isset($this->_field_data[$field]) && $this->_field_data[$field]['postdata'] === $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is Unique
+	 *
+	 * Check if the input value doesn't already exist
+	 * in the specified database field.
+	 *
+	 * @param	string	$str
+	 * @param	string	$field
+	 * @return	bool
+	 */
+	public function is_unique($str, $field)
+	{
+		sscanf($field, '%[^.].%[^.]', $table, $field);
+		return isset($this->CI->db)
+			? ($this->CI->db->limit(1)->get_where($table, array($field => $str))->num_rows() === 0)
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Minimum Length
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	public function min_length($str, $val)
+	{
+		if ( ! is_numeric($val))
+		{
+			return FALSE;
+		}
+
+		return ($val <= mb_strlen($str));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Max Length
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	public function max_length($str, $val)
+	{
+		if ( ! is_numeric($val))
+		{
+			return FALSE;
+		}
+
+		return ($val >= mb_strlen($str));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Exact Length
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	public function exact_length($str, $val)
+	{
+		if ( ! is_numeric($val))
+		{
+			return FALSE;
+		}
+
+		return (mb_strlen($str) === (int) $val);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Valid URL
+	 *
+	 * @param	string	$str
+	 * @return	bool
+	 */
+	public function valid_url($str)
+	{
+		if (empty($str))
+		{
+			return FALSE;
+		}
+		elseif (preg_match('/^(?:([^:]*)\:)?\/\/(.+)$/', $str, $matches))
+		{
+			if (empty($matches[2]))
+			{
+				return FALSE;
+			}
+			elseif ( ! in_array(strtolower($matches[1]), array('http', 'https'), TRUE))
+			{
+				return FALSE;
+			}
+
+			$str = $matches[2];
+		}
+
+		// Apparently, FILTER_VALIDATE_URL doesn't reject digit-only names for some reason ...
+		// See https://github.com/bcit-ci/CodeIgniter/issues/5755
+		if (ctype_digit($str))
+		{
+			return FALSE;
+		}
+
+		// PHP 7 accepts IPv6 addresses within square brackets as hostnames,
+		// but it appears that the PR that came in with https://bugs.php.net/bug.php?id=68039
+		// was never merged into a PHP 5 branch ... https://3v4l.org/8PsSN
+		if (preg_match('/^\[([^\]]+)\]/', $str, $matches) && ! is_php('7') && filter_var($matches[1], FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) !== FALSE)
+		{
+			$str = 'ipv6.host'.substr($str, strlen($matches[1]) + 2);
+		}
+
+		return (filter_var('http://'.$str, FILTER_VALIDATE_URL) !== FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Valid Email
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function valid_email($str)
+	{
+		if (function_exists('idn_to_ascii') && preg_match('#\A([^@]+)@(.+)\z#', $str, $matches))
+		{
+			$domain = defined('INTL_IDNA_VARIANT_UTS46')
+				? idn_to_ascii($matches[2], 0, INTL_IDNA_VARIANT_UTS46)
+				: idn_to_ascii($matches[2]);
+
+			if ($domain !== FALSE)
+			{
+				$str = $matches[1].'@'.$domain;
+			}
+		}
+
+		return (bool) filter_var($str, FILTER_VALIDATE_EMAIL);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Valid Emails
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function valid_emails($str)
+	{
+		if (strpos($str, ',') === FALSE)
+		{
+			return $this->valid_email(trim($str));
+		}
+
+		foreach (explode(',', $str) as $email)
+		{
+			if (trim($email) !== '' && $this->valid_email(trim($email)) === FALSE)
+			{
+				return FALSE;
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate IP Address
+	 *
+	 * @param	string
+	 * @param	string	'ipv4' or 'ipv6' to validate a specific IP format
+	 * @return	bool
+	 */
+	public function valid_ip($ip, $which = '')
+	{
+		return $this->CI->input->valid_ip($ip, $which);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate MAC address
+	 *
+	 * @param	string	$mac
+	 * @return	bool
+	 */
+	public function valid_mac($mac)
+	{
+		if ( ! is_php('5.5'))
+		{
+			// Most common format, with either dash or colon delimiters
+			if (preg_match('#\A[0-9a-f]{2}(?<delimiter>[:-])([0-9a-f]{2}(?P=delimiter)){4}[0-9a-f]{2}\z#i', $mac))
+			{
+				return TRUE;
+			}
+
+			// The less common format; e.g. 0123.4567.89ab
+			return (bool) preg_match('#((\A|\.)[0-9a-f]{4}){3}\z#i', $mac);
+		}
+
+		return (bool) filter_var($mac, FILTER_VALIDATE_MAC);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Alpha
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function alpha($str)
+	{
+		return ctype_alpha($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Alpha-numeric
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function alpha_numeric($str)
+	{
+		return ctype_alnum((string) $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Alpha-numeric w/ spaces
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function alpha_numeric_spaces($str)
+	{
+		return (bool) preg_match('/^[A-Z0-9 ]+$/i', $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Alpha-numeric with underscores and dashes
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function alpha_dash($str)
+	{
+		return (bool) preg_match('/^[a-z0-9_-]+$/i', $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Numeric
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function numeric($str)
+	{
+		return (bool) preg_match('/^[\-+]?[0-9]*\.?[0-9]+$/', $str);
+
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Integer
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function integer($str)
+	{
+		return (bool) preg_match('/^[\-+]?[0-9]+$/', $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decimal number
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function decimal($str)
+	{
+		return (bool) preg_match('/^[\-+]?[0-9]+\.[0-9]+$/', $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Greater than
+	 *
+	 * @param	string
+	 * @param	int
+	 * @return	bool
+	 */
+	public function greater_than($str, $min)
+	{
+		return is_numeric($str) ? ($str > $min) : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Equal to or Greater than
+	 *
+	 * @param	string
+	 * @param	int
+	 * @return	bool
+	 */
+	public function greater_than_equal_to($str, $min)
+	{
+		return is_numeric($str) ? ($str >= $min) : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Less than
+	 *
+	 * @param	string
+	 * @param	int
+	 * @return	bool
+	 */
+	public function less_than($str, $max)
+	{
+		return is_numeric($str) ? ($str < $max) : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Equal to or Less than
+	 *
+	 * @param	string
+	 * @param	int
+	 * @return	bool
+	 */
+	public function less_than_equal_to($str, $max)
+	{
+		return is_numeric($str) ? ($str <= $max) : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Value should be within an array of values
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	public function in_list($value, $list)
+	{
+		return in_array($value, explode(',', $list), TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is a Natural number  (0,1,2,3, etc.)
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function is_natural($str)
+	{
+		return ctype_digit((string) $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is a Natural number, but not a zero  (1,2,3, etc.)
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function is_natural_no_zero($str)
+	{
+		return ($str != 0 && ctype_digit((string) $str));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Valid Base64
+	 *
+	 * Tests a string for characters outside of the Base64 alphabet
+	 * as defined by RFC 2045 http://www.faqs.org/rfcs/rfc2045
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function valid_base64($str)
+	{
+		return (base64_encode(base64_decode($str)) === $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep URL
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function prep_url($str = '')
+	{
+		if ($str !== '' && stripos($str, 'http://') !== 0 && stripos($str, 'https://') !== 0)
+		{
+			return 'http://'.$str;
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Strip Image Tags
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function strip_image_tags($str)
+	{
+		return $this->CI->security->strip_image_tags($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Convert PHP tags to entities
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function encode_php_tags($str)
+	{
+		return str_replace(array('<?', '?>'), array('&lt;?', '?&gt;'), $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reset validation vars
+	 *
+	 * Prevents subsequent validation routines from being affected by the
+	 * results of any previous validation routine due to the CI singleton.
+	 *
+	 * @return	CI_Form_validation
+	 */
+	public function reset_validation()
+	{
+		$this->_field_data = array();
+		$this->_error_array = array();
+		$this->_error_messages = array();
+		$this->error_string = '';
+		return $this;
+	}
+
+}
diff --git a/system/libraries/Ftp.php b/system/libraries/Ftp.php
new file mode 100644
index 00000000..61fa80c0
--- /dev/null
+++ b/system/libraries/Ftp.php
@@ -0,0 +1,667 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * FTP Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/ftp.html
+ */
+class CI_FTP {
+
+	/**
+	 * FTP Server hostname
+	 *
+	 * @var	string
+	 */
+	public $hostname = '';
+
+	/**
+	 * FTP Username
+	 *
+	 * @var	string
+	 */
+	public $username = '';
+
+	/**
+	 * FTP Password
+	 *
+	 * @var	string
+	 */
+	public $password = '';
+
+	/**
+	 * FTP Server port
+	 *
+	 * @var	int
+	 */
+	public $port = 21;
+
+	/**
+	 * Passive mode flag
+	 *
+	 * @var	bool
+	 */
+	public $passive = TRUE;
+
+	/**
+	 * Debug flag
+	 *
+	 * Specifies whether to display error messages.
+	 *
+	 * @var	bool
+	 */
+	public $debug = FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Connection ID
+	 *
+	 * @var	resource
+	 */
+	protected $conn_id;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		empty($config) OR $this->initialize($config);
+		log_message('info', 'FTP Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize preferences
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function initialize($config = array())
+	{
+		foreach ($config as $key => $val)
+		{
+			if (isset($this->$key))
+			{
+				$this->$key = $val;
+			}
+		}
+
+		// Prep the hostname
+		$this->hostname = preg_replace('|.+?://|', '', $this->hostname);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FTP Connect
+	 *
+	 * @param	array	 $config	Connection values
+	 * @return	bool
+	 */
+	public function connect($config = array())
+	{
+		if (count($config) > 0)
+		{
+			$this->initialize($config);
+		}
+
+		if (FALSE === ($this->conn_id = @ftp_connect($this->hostname, $this->port)))
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_connect');
+			}
+
+			return FALSE;
+		}
+
+		if ( ! $this->_login())
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_login');
+			}
+
+			return FALSE;
+		}
+
+		// Set passive mode if needed
+		if ($this->passive === TRUE)
+		{
+			ftp_pasv($this->conn_id, TRUE);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FTP Login
+	 *
+	 * @return	bool
+	 */
+	protected function _login()
+	{
+		return @ftp_login($this->conn_id, $this->username, $this->password);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validates the connection ID
+	 *
+	 * @return	bool
+	 */
+	protected function _is_conn()
+	{
+		if ( ! is_resource($this->conn_id))
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_no_connection');
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Change directory
+	 *
+	 * The second parameter lets us momentarily turn off debugging so that
+	 * this function can be used to test for the existence of a folder
+	 * without throwing an error. There's no FTP equivalent to is_dir()
+	 * so we do it by trying to change to a particular directory.
+	 * Internally, this parameter is only used by the "mirror" function below.
+	 *
+	 * @param	string	$path
+	 * @param	bool	$suppress_debug
+	 * @return	bool
+	 */
+	public function changedir($path, $suppress_debug = FALSE)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		$result = @ftp_chdir($this->conn_id, $path);
+
+		if ($result === FALSE)
+		{
+			if ($this->debug === TRUE && $suppress_debug === FALSE)
+			{
+				$this->_error('ftp_unable_to_changedir');
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create a directory
+	 *
+	 * @param	string	$path
+	 * @param	int	$permissions
+	 * @return	bool
+	 */
+	public function mkdir($path, $permissions = NULL)
+	{
+		if ($path === '' OR ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		$result = @ftp_mkdir($this->conn_id, $path);
+
+		if ($result === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_mkdir');
+			}
+
+			return FALSE;
+		}
+
+		// Set file permissions if needed
+		if ($permissions !== NULL)
+		{
+			$this->chmod($path, (int) $permissions);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Upload a file to the server
+	 *
+	 * @param	string	$locpath
+	 * @param	string	$rempath
+	 * @param	string	$mode
+	 * @param	int	$permissions
+	 * @return	bool
+	 */
+	public function upload($locpath, $rempath, $mode = 'auto', $permissions = NULL)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		if ( ! file_exists($locpath))
+		{
+			$this->_error('ftp_no_source_file');
+			return FALSE;
+		}
+
+		// Set the mode if not specified
+		if ($mode === 'auto')
+		{
+			// Get the file extension so we can set the upload type
+			$ext = $this->_getext($locpath);
+			$mode = $this->_settype($ext);
+		}
+
+		$mode = ($mode === 'ascii') ? FTP_ASCII : FTP_BINARY;
+
+		$result = @ftp_put($this->conn_id, $rempath, $locpath, $mode);
+
+		if ($result === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_upload');
+			}
+
+			return FALSE;
+		}
+
+		// Set file permissions if needed
+		if ($permissions !== NULL)
+		{
+			$this->chmod($rempath, (int) $permissions);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Download a file from a remote server to the local server
+	 *
+	 * @param	string	$rempath
+	 * @param	string	$locpath
+	 * @param	string	$mode
+	 * @return	bool
+	 */
+	public function download($rempath, $locpath, $mode = 'auto')
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		// Set the mode if not specified
+		if ($mode === 'auto')
+		{
+			// Get the file extension so we can set the upload type
+			$ext = $this->_getext($rempath);
+			$mode = $this->_settype($ext);
+		}
+
+		$mode = ($mode === 'ascii') ? FTP_ASCII : FTP_BINARY;
+
+		$result = @ftp_get($this->conn_id, $locpath, $rempath, $mode);
+
+		if ($result === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_download');
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rename (or move) a file
+	 *
+	 * @param	string	$old_file
+	 * @param	string	$new_file
+	 * @param	bool	$move
+	 * @return	bool
+	 */
+	public function rename($old_file, $new_file, $move = FALSE)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		$result = @ftp_rename($this->conn_id, $old_file, $new_file);
+
+		if ($result === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_'.($move === FALSE ? 'rename' : 'move'));
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Move a file
+	 *
+	 * @param	string	$old_file
+	 * @param	string	$new_file
+	 * @return	bool
+	 */
+	public function move($old_file, $new_file)
+	{
+		return $this->rename($old_file, $new_file, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rename (or move) a file
+	 *
+	 * @param	string	$filepath
+	 * @return	bool
+	 */
+	public function delete_file($filepath)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		$result = @ftp_delete($this->conn_id, $filepath);
+
+		if ($result === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_delete');
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete a folder and recursively delete everything (including sub-folders)
+	 * contained within it.
+	 *
+	 * @param	string	$filepath
+	 * @return	bool
+	 */
+	public function delete_dir($filepath)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		// Add a trailing slash to the file path if needed
+		$filepath = preg_replace('/(.+?)\/*$/', '\\1/', $filepath);
+
+		$list = $this->list_files($filepath);
+		if ( ! empty($list))
+		{
+			for ($i = 0, $c = count($list); $i < $c; $i++)
+			{
+				// If we can't delete the item it's probably a directory,
+				// so we'll recursively call delete_dir()
+				if ( ! preg_match('#/\.\.?$#', $list[$i]) && ! @ftp_delete($this->conn_id, $list[$i]))
+				{
+					$this->delete_dir($filepath.$list[$i]);
+				}
+			}
+		}
+
+		if (@ftp_rmdir($this->conn_id, $filepath) === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_delete');
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set file permissions
+	 *
+	 * @param	string	$path	File path
+	 * @param	int	$perm	Permissions
+	 * @return	bool
+	 */
+	public function chmod($path, $perm)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		if (@ftp_chmod($this->conn_id, $perm, $path) === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_chmod');
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FTP List files in the specified directory
+	 *
+	 * @param	string	$path
+	 * @return	array
+	 */
+	public function list_files($path = '.')
+	{
+		return $this->_is_conn()
+			? ftp_nlist($this->conn_id, $path)
+			: FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Read a directory and recreate it remotely
+	 *
+	 * This function recursively reads a folder and everything it contains
+	 * (including sub-folders) and creates a mirror via FTP based on it.
+	 * Whatever the directory structure of the original file path will be
+	 * recreated on the server.
+	 *
+	 * @param	string	$locpath	Path to source with trailing slash
+	 * @param	string	$rempath	Path to destination - include the base folder with trailing slash
+	 * @return	bool
+	 */
+	public function mirror($locpath, $rempath)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		// Open the local file path
+		if ($fp = @opendir($locpath))
+		{
+			// Attempt to open the remote file path and try to create it, if it doesn't exist
+			if ( ! $this->changedir($rempath, TRUE) && ( ! $this->mkdir($rempath) OR ! $this->changedir($rempath)))
+			{
+				return FALSE;
+			}
+
+			// Recursively read the local directory
+			while (FALSE !== ($file = readdir($fp)))
+			{
+				if (is_dir($locpath.$file) && $file[0] !== '.')
+				{
+					$this->mirror($locpath.$file.'/', $rempath.$file.'/');
+				}
+				elseif ($file[0] !== '.')
+				{
+					// Get the file extension so we can se the upload type
+					$ext = $this->_getext($file);
+					$mode = $this->_settype($ext);
+
+					$this->upload($locpath.$file, $rempath.$file, $mode);
+				}
+			}
+
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Extract the file extension
+	 *
+	 * @param	string	$filename
+	 * @return	string
+	 */
+	protected function _getext($filename)
+	{
+		return (($dot = strrpos($filename, '.')) === FALSE)
+			? 'txt'
+			: substr($filename, $dot + 1);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the upload type
+	 *
+	 * @param	string	$ext	Filename extension
+	 * @return	string
+	 */
+	protected function _settype($ext)
+	{
+		return in_array($ext, array('txt', 'text', 'php', 'phps', 'php4', 'js', 'css', 'htm', 'html', 'phtml', 'shtml', 'log', 'xml'), TRUE)
+			? 'ascii'
+			: 'binary';
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Close the connection
+	 *
+	 * @return	bool
+	 */
+	public function close()
+	{
+		return $this->_is_conn()
+			? @ftp_close($this->conn_id)
+			: FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Display error message
+	 *
+	 * @param	string	$line
+	 * @return	void
+	 */
+	protected function _error($line)
+	{
+		$CI =& get_instance();
+		$CI->lang->load('ftp');
+		show_error($CI->lang->line($line));
+	}
+
+}
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
new file mode 100644
index 00000000..6aeee179
--- /dev/null
+++ b/system/libraries/Image_lib.php
@@ -0,0 +1,1878 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Image Manipulation class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Image_lib
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/image_lib.html
+ */
+class CI_Image_lib {
+
+	/**
+	 * PHP extension/library to use for image manipulation
+	 * Can be: imagemagick, netpbm, gd, gd2
+	 *
+	 * @var string
+	 */
+	public $image_library		= 'gd2';
+
+	/**
+	 * Path to the graphic library (if applicable)
+	 *
+	 * @var string
+	 */
+	public $library_path		= '';
+
+	/**
+	 * Whether to send to browser or write to disk
+	 *
+	 * @var bool
+	 */
+	public $dynamic_output		= FALSE;
+
+	/**
+	 * Path to original image
+	 *
+	 * @var string
+	 */
+	public $source_image		= '';
+
+	/**
+	 * Path to the modified image
+	 *
+	 * @var string
+	 */
+	public $new_image		= '';
+
+	/**
+	 * Image width
+	 *
+	 * @var int
+	 */
+	public $width			= '';
+
+	/**
+	 * Image height
+	 *
+	 * @var int
+	 */
+	public $height			= '';
+
+	/**
+	 * Quality percentage of new image
+	 *
+	 * @var int
+	 */
+	public $quality			= 90;
+
+	/**
+	 * Whether to create a thumbnail
+	 *
+	 * @var bool
+	 */
+	public $create_thumb		= FALSE;
+
+	/**
+	 * String to add to thumbnail version of image
+	 *
+	 * @var string
+	 */
+	public $thumb_marker		= '_thumb';
+
+	/**
+	 * Whether to maintain aspect ratio when resizing or use hard values
+	 *
+	 * @var bool
+	 */
+	public $maintain_ratio		= TRUE;
+
+	/**
+	 * auto, height, or width.  Determines what to use as the master dimension
+	 *
+	 * @var string
+	 */
+	public $master_dim		= 'auto';
+
+	/**
+	 * Angle at to rotate image
+	 *
+	 * @var string
+	 */
+	public $rotation_angle		= '';
+
+	/**
+	 * X Coordinate for manipulation of the current image
+	 *
+	 * @var int
+	 */
+	public $x_axis			= '';
+
+	/**
+	 * Y Coordinate for manipulation of the current image
+	 *
+	 * @var int
+	 */
+	public $y_axis			= '';
+
+	// --------------------------------------------------------------------------
+	// Watermark Vars
+	// --------------------------------------------------------------------------
+
+	/**
+	 * Watermark text if graphic is not used
+	 *
+	 * @var string
+	 */
+	public $wm_text			= '';
+
+	/**
+	 * Type of watermarking.  Options:  text/overlay
+	 *
+	 * @var string
+	 */
+	public $wm_type			= 'text';
+
+	/**
+	 * Default transparency for watermark
+	 *
+	 * @var int
+	 */
+	public $wm_x_transp		= 4;
+
+	/**
+	 * Default transparency for watermark
+	 *
+	 * @var int
+	 */
+	public $wm_y_transp		= 4;
+
+	/**
+	 * Watermark image path
+	 *
+	 * @var string
+	 */
+	public $wm_overlay_path		= '';
+
+	/**
+	 * TT font
+	 *
+	 * @var string
+	 */
+	public $wm_font_path		= '';
+
+	/**
+	 * Font size (different versions of GD will either use points or pixels)
+	 *
+	 * @var int
+	 */
+	public $wm_font_size		= 17;
+
+	/**
+	 * Vertical alignment:   T M B
+	 *
+	 * @var string
+	 */
+	public $wm_vrt_alignment	= 'B';
+
+	/**
+	 * Horizontal alignment: L R C
+	 *
+	 * @var string
+	 */
+	public $wm_hor_alignment	= 'C';
+
+	/**
+	 * Padding around text
+	 *
+	 * @var int
+	 */
+	public $wm_padding			= 0;
+
+	/**
+	 * Lets you push text to the right
+	 *
+	 * @var int
+	 */
+	public $wm_hor_offset		= 0;
+
+	/**
+	 * Lets you push text down
+	 *
+	 * @var int
+	 */
+	public $wm_vrt_offset		= 0;
+
+	/**
+	 * Text color
+	 *
+	 * @var string
+	 */
+	protected $wm_font_color	= '#ffffff';
+
+	/**
+	 * Dropshadow color
+	 *
+	 * @var string
+	 */
+	protected $wm_shadow_color	= '';
+
+	/**
+	 * Dropshadow distance
+	 *
+	 * @var int
+	 */
+	public $wm_shadow_distance	= 2;
+
+	/**
+	 * Image opacity: 1 - 100  Only works with image
+	 *
+	 * @var int
+	 */
+	public $wm_opacity		= 50;
+
+	// --------------------------------------------------------------------------
+	// Private Vars
+	// --------------------------------------------------------------------------
+
+	/**
+	 * Source image folder
+	 *
+	 * @var string
+	 */
+	public $source_folder		= '';
+
+	/**
+	 * Destination image folder
+	 *
+	 * @var string
+	 */
+	public $dest_folder		= '';
+
+	/**
+	 * Image mime-type
+	 *
+	 * @var string
+	 */
+	public $mime_type		= '';
+
+	/**
+	 * Original image width
+	 *
+	 * @var int
+	 */
+	public $orig_width		= '';
+
+	/**
+	 * Original image height
+	 *
+	 * @var int
+	 */
+	public $orig_height		= '';
+
+	/**
+	 * Image format
+	 *
+	 * @var string
+	 */
+	public $image_type		= '';
+
+	/**
+	 * Size of current image
+	 *
+	 * @var string
+	 */
+	public $size_str		= '';
+
+	/**
+	 * Full path to source image
+	 *
+	 * @var string
+	 */
+	public $full_src_path		= '';
+
+	/**
+	 * Full path to destination image
+	 *
+	 * @var string
+	 */
+	public $full_dst_path		= '';
+
+	/**
+	 * File permissions
+	 *
+	 * @var	int
+	 */
+	public $file_permissions = 0644;
+
+	/**
+	 * Name of function to create image
+	 *
+	 * @var string
+	 */
+	public $create_fnc		= 'imagecreatetruecolor';
+
+	/**
+	 * Name of function to copy image
+	 *
+	 * @var string
+	 */
+	public $copy_fnc		= 'imagecopyresampled';
+
+	/**
+	 * Error messages
+	 *
+	 * @var array
+	 */
+	public $error_msg		= array();
+
+	/**
+	 * Whether to have a drop shadow on watermark
+	 *
+	 * @var bool
+	 */
+	protected $wm_use_drop_shadow	= FALSE;
+
+	/**
+	 * Whether to use truetype fonts
+	 *
+	 * @var bool
+	 */
+	public $wm_use_truetype	= FALSE;
+
+	/**
+	 * Initialize Image Library
+	 *
+	 * @param	array	$props
+	 * @return	void
+	 */
+	public function __construct($props = array())
+	{
+		if (count($props) > 0)
+		{
+			$this->initialize($props);
+		}
+
+		/**
+		 * A work-around for some improperly formatted, but
+		 * usable JPEGs; known to be produced by Samsung
+		 * smartphones' front-facing cameras.
+		 *
+		 * @see	https://github.com/bcit-ci/CodeIgniter/issues/4967
+		 * @see	https://bugs.php.net/bug.php?id=72404
+		 */
+		ini_set('gd.jpeg_ignore_warning', 1);
+
+		log_message('info', 'Image Lib Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize image properties
+	 *
+	 * Resets values in case this class is used in a loop
+	 *
+	 * @return	void
+	 */
+	public function clear()
+	{
+		$props = array('thumb_marker', 'library_path', 'source_image', 'new_image', 'width', 'height', 'rotation_angle', 'x_axis', 'y_axis', 'wm_text', 'wm_overlay_path', 'wm_font_path', 'wm_shadow_color', 'source_folder', 'dest_folder', 'mime_type', 'orig_width', 'orig_height', 'image_type', 'size_str', 'full_src_path', 'full_dst_path');
+
+		foreach ($props as $val)
+		{
+			$this->$val = '';
+		}
+
+		$this->image_library 		= 'gd2';
+		$this->dynamic_output 		= FALSE;
+		$this->quality 				= 90;
+		$this->create_thumb 		= FALSE;
+		$this->thumb_marker 		= '_thumb';
+		$this->maintain_ratio 		= TRUE;
+		$this->master_dim 			= 'auto';
+		$this->wm_type 				= 'text';
+		$this->wm_x_transp 			= 4;
+		$this->wm_y_transp 			= 4;
+		$this->wm_font_size 		= 17;
+		$this->wm_vrt_alignment 	= 'B';
+		$this->wm_hor_alignment 	= 'C';
+		$this->wm_padding 			= 0;
+		$this->wm_hor_offset 		= 0;
+		$this->wm_vrt_offset 		= 0;
+		$this->wm_font_color		= '#ffffff';
+		$this->wm_shadow_distance 	= 2;
+		$this->wm_opacity 			= 50;
+		$this->create_fnc 			= 'imagecreatetruecolor';
+		$this->copy_fnc 			= 'imagecopyresampled';
+		$this->error_msg 			= array();
+		$this->wm_use_drop_shadow 	= FALSE;
+		$this->wm_use_truetype 		= FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * initialize image preferences
+	 *
+	 * @param	array
+	 * @return	bool
+	 */
+	public function initialize($props = array())
+	{
+		// Convert array elements into class variables
+		if (count($props) > 0)
+		{
+			foreach ($props as $key => $val)
+			{
+				if (property_exists($this, $key))
+				{
+					if (in_array($key, array('wm_font_color', 'wm_shadow_color'), TRUE))
+					{
+						if (preg_match('/^#?([0-9a-f]{3}|[0-9a-f]{6})$/i', $val, $matches))
+						{
+							/* $matches[1] contains our hex color value, but it might be
+							 * both in the full 6-length format or the shortened 3-length
+							 * value.
+							 * We'll later need the full version, so we keep it if it's
+							 * already there and if not - we'll convert to it. We can
+							 * access string characters by their index as in an array,
+							 * so we'll do that and use concatenation to form the final
+							 * value:
+							 */
+							$val = (strlen($matches[1]) === 6)
+								? '#'.$matches[1]
+								: '#'.$matches[1][0].$matches[1][0].$matches[1][1].$matches[1][1].$matches[1][2].$matches[1][2];
+						}
+						else
+						{
+							continue;
+						}
+					}
+					elseif (in_array($key, array('width', 'height'), TRUE) && ! ctype_digit((string) $val))
+					{
+						continue;
+					}
+
+					$this->$key = $val;
+				}
+			}
+		}
+
+		// Is there a source image? If not, there's no reason to continue
+		if ($this->source_image === '')
+		{
+			$this->set_error('imglib_source_image_required');
+			return FALSE;
+		}
+
+		/* Is getimagesize() available?
+		 *
+		 * We use it to determine the image properties (width/height).
+		 * Note: We need to figure out how to determine image
+		 * properties using ImageMagick and NetPBM
+		 */
+		if ( ! function_exists('getimagesize'))
+		{
+			$this->set_error('imglib_gd_required_for_props');
+			return FALSE;
+		}
+
+		$this->image_library = strtolower($this->image_library);
+
+		/* Set the full server path
+		 *
+		 * The source image may or may not contain a path.
+		 * Either way, we'll try use realpath to generate the
+		 * full server path in order to more reliably read it.
+		 */
+		if (($full_source_path = realpath($this->source_image)) !== FALSE)
+		{
+			$full_source_path = str_replace('\\', '/', $full_source_path);
+		}
+		else
+		{
+			$full_source_path = $this->source_image;
+		}
+
+		$x = explode('/', $full_source_path);
+		$this->source_image = end($x);
+		$this->source_folder = str_replace($this->source_image, '', $full_source_path);
+
+		// Set the Image Properties
+		if ( ! $this->get_image_properties($this->source_folder.$this->source_image))
+		{
+			return FALSE;
+		}
+
+		/*
+		 * Assign the "new" image name/path
+		 *
+		 * If the user has set a "new_image" name it means
+		 * we are making a copy of the source image. If not
+		 * it means we are altering the original. We'll
+		 * set the destination filename and path accordingly.
+		 */
+		if ($this->new_image === '')
+		{
+			$this->dest_image  = $this->source_image;
+			$this->dest_folder = $this->source_folder;
+		}
+		elseif (strpos($this->new_image, '/') === FALSE && strpos($this->new_image, '\\') === FALSE)
+		{
+			$this->dest_image  = $this->new_image;
+			$this->dest_folder = $this->source_folder;
+		}
+		else
+		{
+			// Is there a file name?
+			if ( ! preg_match('#\.(jpg|jpeg|gif|png)$#i', $this->new_image))
+			{
+				$this->dest_image  = $this->source_image;
+				$this->dest_folder = $this->new_image;
+			}
+			else
+			{
+				$x = explode('/', str_replace('\\', '/', $this->new_image));
+				$this->dest_image  = end($x);
+				$this->dest_folder = str_replace($this->dest_image, '', $this->new_image);
+			}
+
+			$this->dest_folder = realpath($this->dest_folder).'/';
+		}
+
+		/* Compile the finalized filenames/paths
+		 *
+		 * We'll create two master strings containing the
+		 * full server path to the source image and the
+		 * full server path to the destination image.
+		 * We'll also split the destination image name
+		 * so we can insert the thumbnail marker if needed.
+		 */
+		if ($this->create_thumb === FALSE OR $this->thumb_marker === '')
+		{
+			$this->thumb_marker = '';
+		}
+
+		$xp = $this->explode_name($this->dest_image);
+
+		$filename = $xp['name'];
+		$file_ext = $xp['ext'];
+
+		$this->full_src_path = $this->source_folder.$this->source_image;
+		$this->full_dst_path = $this->dest_folder.$filename.$this->thumb_marker.$file_ext;
+
+		/* Should we maintain image proportions?
+		 *
+		 * When creating thumbs or copies, the target width/height
+		 * might not be in correct proportion with the source
+		 * image's width/height. We'll recalculate it here.
+		 */
+		if ($this->maintain_ratio === TRUE && ($this->width !== 0 OR $this->height !== 0))
+		{
+			$this->image_reproportion();
+		}
+
+		/* Was a width and height specified?
+		 *
+		 * If the destination width/height was not submitted we
+		 * will use the values from the actual file
+		 */
+		if ($this->width === '')
+		{
+			$this->width = $this->orig_width;
+		}
+
+		if ($this->height === '')
+		{
+			$this->height = $this->orig_height;
+		}
+
+		// Set the quality
+		$this->quality = trim(str_replace('%', '', $this->quality));
+
+		if ($this->quality === '' OR $this->quality === 0 OR ! ctype_digit($this->quality))
+		{
+			$this->quality = 90;
+		}
+
+		// Set the x/y coordinates
+		is_numeric($this->x_axis) OR $this->x_axis = 0;
+		is_numeric($this->y_axis) OR $this->y_axis = 0;
+
+		// Watermark-related Stuff...
+		if ($this->wm_overlay_path !== '')
+		{
+			$this->wm_overlay_path = str_replace('\\', '/', realpath($this->wm_overlay_path));
+		}
+
+		if ($this->wm_shadow_color !== '')
+		{
+			$this->wm_use_drop_shadow = TRUE;
+		}
+		elseif ($this->wm_use_drop_shadow === TRUE && $this->wm_shadow_color === '')
+		{
+			$this->wm_use_drop_shadow = FALSE;
+		}
+
+		if ($this->wm_font_path !== '')
+		{
+			$this->wm_use_truetype = TRUE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Resize
+	 *
+	 * This is a wrapper function that chooses the proper
+	 * resize function based on the protocol specified
+	 *
+	 * @return	bool
+	 */
+	public function resize()
+	{
+		$protocol = ($this->image_library === 'gd2') ? 'image_process_gd' : 'image_process_'.$this->image_library;
+		return $this->$protocol('resize');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Crop
+	 *
+	 * This is a wrapper function that chooses the proper
+	 * cropping function based on the protocol specified
+	 *
+	 * @return	bool
+	 */
+	public function crop()
+	{
+		$protocol = ($this->image_library === 'gd2') ? 'image_process_gd' : 'image_process_'.$this->image_library;
+		return $this->$protocol('crop');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Rotate
+	 *
+	 * This is a wrapper function that chooses the proper
+	 * rotation function based on the protocol specified
+	 *
+	 * @return	bool
+	 */
+	public function rotate()
+	{
+		// Allowed rotation values
+		$degs = array(90, 180, 270, 'vrt', 'hor');
+
+		if ($this->rotation_angle === '' OR ! in_array($this->rotation_angle, $degs))
+		{
+			$this->set_error('imglib_rotation_angle_required');
+			return FALSE;
+		}
+
+		// Reassign the width and height
+		if ($this->rotation_angle === 90 OR $this->rotation_angle === 270)
+		{
+			$this->width	= $this->orig_height;
+			$this->height	= $this->orig_width;
+		}
+		else
+		{
+			$this->width	= $this->orig_width;
+			$this->height	= $this->orig_height;
+		}
+
+		// Choose resizing function
+		if ($this->image_library === 'imagemagick' OR $this->image_library === 'netpbm')
+		{
+			$protocol = 'image_process_'.$this->image_library;
+			return $this->$protocol('rotate');
+		}
+
+		return ($this->rotation_angle === 'hor' OR $this->rotation_angle === 'vrt')
+			? $this->image_mirror_gd()
+			: $this->image_rotate_gd();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Process Using GD/GD2
+	 *
+	 * This function will resize or crop
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function image_process_gd($action = 'resize')
+	{
+		$v2_override = FALSE;
+
+		// If the target width/height match the source, AND if the new file name is not equal to the old file name
+		// we'll simply make a copy of the original with the new name... assuming dynamic rendering is off.
+		if ($this->dynamic_output === FALSE && $this->orig_width === $this->width && $this->orig_height === $this->height)
+		{
+			if ($this->source_image !== $this->new_image && @copy($this->full_src_path, $this->full_dst_path))
+			{
+				chmod($this->full_dst_path, $this->file_permissions);
+			}
+
+			return TRUE;
+		}
+
+		// Let's set up our values based on the action
+		if ($action === 'crop')
+		{
+			// Reassign the source width/height if cropping
+			$this->orig_width  = $this->width;
+			$this->orig_height = $this->height;
+
+			// GD 2.0 has a cropping bug so we'll test for it
+			if ($this->gd_version() !== FALSE)
+			{
+				$gd_version = str_replace('0', '', $this->gd_version());
+				$v2_override = ($gd_version == 2);
+			}
+		}
+		else
+		{
+			// If resizing the x/y axis must be zero
+			$this->x_axis = 0;
+			$this->y_axis = 0;
+		}
+
+		// Create the image handle
+		if ( ! ($src_img = $this->image_create_gd()))
+		{
+			return FALSE;
+		}
+
+		/* Create the image
+		 *
+		 * Old conditional which users report cause problems with shared GD libs who report themselves as "2.0 or greater"
+		 * it appears that this is no longer the issue that it was in 2004, so we've removed it, retaining it in the comment
+		 * below should that ever prove inaccurate.
+		 *
+		 * if ($this->image_library === 'gd2' && function_exists('imagecreatetruecolor') && $v2_override === FALSE)
+		 */
+		if ($this->image_library === 'gd2' && function_exists('imagecreatetruecolor'))
+		{
+			$create	= 'imagecreatetruecolor';
+			$copy	= 'imagecopyresampled';
+		}
+		else
+		{
+			$create	= 'imagecreate';
+			$copy	= 'imagecopyresized';
+		}
+
+		$dst_img = $create($this->width, $this->height);
+
+		if ($this->image_type === 3) // png we can actually preserve transparency
+		{
+			imagealphablending($dst_img, FALSE);
+			imagesavealpha($dst_img, TRUE);
+		}
+
+		$copy($dst_img, $src_img, 0, 0, $this->x_axis, $this->y_axis, $this->width, $this->height, $this->orig_width, $this->orig_height);
+
+		// Show the image
+		if ($this->dynamic_output === TRUE)
+		{
+			$this->image_display_gd($dst_img);
+		}
+		elseif ( ! $this->image_save_gd($dst_img)) // Or save it
+		{
+			return FALSE;
+		}
+
+		// Kill the file handles
+		imagedestroy($dst_img);
+		imagedestroy($src_img);
+
+		if ($this->dynamic_output !== TRUE)
+		{
+			chmod($this->full_dst_path, $this->file_permissions);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Process Using ImageMagick
+	 *
+	 * This function will resize, crop or rotate
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function image_process_imagemagick($action = 'resize')
+	{
+		// Do we have a vaild library path?
+		if ($this->library_path === '')
+		{
+			$this->set_error('imglib_libpath_invalid');
+			return FALSE;
+		}
+
+		if ( ! preg_match('/convert$/i', $this->library_path))
+		{
+			$this->library_path = rtrim($this->library_path, '/').'/convert';
+		}
+
+		// Execute the command
+		$cmd = $this->library_path.' -quality '.$this->quality;
+
+		if ($action === 'crop')
+		{
+			$cmd .= ' -crop '.$this->width.'x'.$this->height.'+'.$this->x_axis.'+'.$this->y_axis;
+		}
+		elseif ($action === 'rotate')
+		{
+			$cmd .= ($this->rotation_angle === 'hor' OR $this->rotation_angle === 'vrt')
+					? ' -flop'
+					: ' -rotate '.$this->rotation_angle;
+		}
+		else // Resize
+		{
+			if($this->maintain_ratio === TRUE)
+			{
+				$cmd .= ' -resize '.$this->width.'x'.$this->height;
+			}
+			else
+			{
+				$cmd .= ' -resize '.$this->width.'x'.$this->height.'\!';
+			}
+		}
+
+		$cmd .= ' '.escapeshellarg($this->full_src_path).' '.escapeshellarg($this->full_dst_path).' 2>&1';
+
+		$retval = 1;
+		// exec() might be disabled
+		if (function_usable('exec'))
+		{
+			@exec($cmd, $output, $retval);
+		}
+
+		// Did it work?
+		if ($retval > 0)
+		{
+			$this->set_error('imglib_image_process_failed');
+			return FALSE;
+		}
+
+		chmod($this->full_dst_path, $this->file_permissions);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Process Using NetPBM
+	 *
+	 * This function will resize, crop or rotate
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function image_process_netpbm($action = 'resize')
+	{
+		if ($this->library_path === '')
+		{
+			$this->set_error('imglib_libpath_invalid');
+			return FALSE;
+		}
+
+		// Build the resizing command
+		switch ($this->image_type)
+		{
+			case 1 :
+				$cmd_in		= 'giftopnm';
+				$cmd_out	= 'ppmtogif';
+				break;
+			case 2 :
+				$cmd_in		= 'jpegtopnm';
+				$cmd_out	= 'ppmtojpeg';
+				break;
+			case 3 :
+				$cmd_in		= 'pngtopnm';
+				$cmd_out	= 'ppmtopng';
+				break;
+			case 18 :
+				$cmd_in		= 'webptopnm';
+				$cmd_out	= 'ppmtowebp';
+				break;
+		}
+
+		if ($action === 'crop')
+		{
+			$cmd_inner = 'pnmcut -left '.$this->x_axis.' -top '.$this->y_axis.' -width '.$this->width.' -height '.$this->height;
+		}
+		elseif ($action === 'rotate')
+		{
+			switch ($this->rotation_angle)
+			{
+				case 90:	$angle = 'r270';
+					break;
+				case 180:	$angle = 'r180';
+					break;
+				case 270:	$angle = 'r90';
+					break;
+				case 'vrt':	$angle = 'tb';
+					break;
+				case 'hor':	$angle = 'lr';
+					break;
+			}
+
+			$cmd_inner = 'pnmflip -'.$angle.' ';
+		}
+		else // Resize
+		{
+			$cmd_inner = 'pnmscale -xysize '.$this->width.' '.$this->height;
+		}
+
+		$cmd = $this->library_path.$cmd_in.' '.escapeshellarg($this->full_src_path).' | '.$cmd_inner.' | '.$cmd_out.' > '.$this->dest_folder.'netpbm.tmp';
+
+		$retval = 1;
+		// exec() might be disabled
+		if (function_usable('exec'))
+		{
+			@exec($cmd, $output, $retval);
+		}
+
+		// Did it work?
+		if ($retval > 0)
+		{
+			$this->set_error('imglib_image_process_failed');
+			return FALSE;
+		}
+
+		// With NetPBM we have to create a temporary image.
+		// If you try manipulating the original it fails so
+		// we have to rename the temp file.
+		copy($this->dest_folder.'netpbm.tmp', $this->full_dst_path);
+		unlink($this->dest_folder.'netpbm.tmp');
+		chmod($this->full_dst_path, $this->file_permissions);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Rotate Using GD
+	 *
+	 * @return	bool
+	 */
+	public function image_rotate_gd()
+	{
+		// Create the image handle
+		if ( ! ($src_img = $this->image_create_gd()))
+		{
+			return FALSE;
+		}
+
+		// Set the background color
+		// This won't work with transparent PNG files so we are
+		// going to have to figure out how to determine the color
+		// of the alpha channel in a future release.
+
+		$white = imagecolorallocate($src_img, 255, 255, 255);
+
+		// Rotate it!
+		$dst_img = imagerotate($src_img, $this->rotation_angle, $white);
+
+		// Show the image
+		if ($this->dynamic_output === TRUE)
+		{
+			$this->image_display_gd($dst_img);
+		}
+		elseif ( ! $this->image_save_gd($dst_img)) // ... or save it
+		{
+			return FALSE;
+		}
+
+		// Kill the file handles
+		imagedestroy($dst_img);
+		imagedestroy($src_img);
+
+		chmod($this->full_dst_path, $this->file_permissions);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Mirror Image using GD
+	 *
+	 * This function will flip horizontal or vertical
+	 *
+	 * @return	bool
+	 */
+	public function image_mirror_gd()
+	{
+		if ( ! $src_img = $this->image_create_gd())
+		{
+			return FALSE;
+		}
+
+		$width  = $this->orig_width;
+		$height = $this->orig_height;
+
+		if ($this->rotation_angle === 'hor')
+		{
+			for ($i = 0; $i < $height; $i++)
+			{
+				$left = 0;
+				$right = $width - 1;
+
+				while ($left < $right)
+				{
+					$cl = imagecolorat($src_img, $left, $i);
+					$cr = imagecolorat($src_img, $right, $i);
+
+					imagesetpixel($src_img, $left, $i, $cr);
+					imagesetpixel($src_img, $right, $i, $cl);
+
+					$left++;
+					$right--;
+				}
+			}
+		}
+		else
+		{
+			for ($i = 0; $i < $width; $i++)
+			{
+				$top = 0;
+				$bottom = $height - 1;
+
+				while ($top < $bottom)
+				{
+					$ct = imagecolorat($src_img, $i, $top);
+					$cb = imagecolorat($src_img, $i, $bottom);
+
+					imagesetpixel($src_img, $i, $top, $cb);
+					imagesetpixel($src_img, $i, $bottom, $ct);
+
+					$top++;
+					$bottom--;
+				}
+			}
+		}
+
+		// Show the image
+		if ($this->dynamic_output === TRUE)
+		{
+			$this->image_display_gd($src_img);
+		}
+		elseif ( ! $this->image_save_gd($src_img)) // ... or save it
+		{
+			return FALSE;
+		}
+
+		// Kill the file handles
+		imagedestroy($src_img);
+
+		chmod($this->full_dst_path, $this->file_permissions);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Watermark
+	 *
+	 * This is a wrapper function that chooses the type
+	 * of watermarking based on the specified preference.
+	 *
+	 * @return	bool
+	 */
+	public function watermark()
+	{
+		return ($this->wm_type === 'overlay') ? $this->overlay_watermark() : $this->text_watermark();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Watermark - Graphic Version
+	 *
+	 * @return	bool
+	 */
+	public function overlay_watermark()
+	{
+		if ( ! function_exists('imagecolortransparent'))
+		{
+			$this->set_error('imglib_gd_required');
+			return FALSE;
+		}
+
+		// Fetch source image properties
+		$this->get_image_properties();
+
+		// Fetch watermark image properties
+		$props		= $this->get_image_properties($this->wm_overlay_path, TRUE);
+		$wm_img_type	= $props['image_type'];
+		$wm_width	= $props['width'];
+		$wm_height	= $props['height'];
+
+		// Create two image resources
+		$wm_img  = $this->image_create_gd($this->wm_overlay_path, $wm_img_type);
+		$src_img = $this->image_create_gd($this->full_src_path);
+
+		// Reverse the offset if necessary
+		// When the image is positioned at the bottom
+		// we don't want the vertical offset to push it
+		// further down. We want the reverse, so we'll
+		// invert the offset. Same with the horizontal
+		// offset when the image is at the right
+
+		$this->wm_vrt_alignment = strtoupper($this->wm_vrt_alignment[0]);
+		$this->wm_hor_alignment = strtoupper($this->wm_hor_alignment[0]);
+
+		if ($this->wm_vrt_alignment === 'B')
+			$this->wm_vrt_offset = $this->wm_vrt_offset * -1;
+
+		if ($this->wm_hor_alignment === 'R')
+			$this->wm_hor_offset = $this->wm_hor_offset * -1;
+
+		// Set the base x and y axis values
+		$x_axis = $this->wm_hor_offset + $this->wm_padding;
+		$y_axis = $this->wm_vrt_offset + $this->wm_padding;
+
+		// Set the vertical position
+		if ($this->wm_vrt_alignment === 'M')
+		{
+			$y_axis += ($this->orig_height / 2) - ($wm_height / 2);
+		}
+		elseif ($this->wm_vrt_alignment === 'B')
+		{
+			$y_axis += $this->orig_height - $wm_height;
+		}
+
+		// Set the horizontal position
+		if ($this->wm_hor_alignment === 'C')
+		{
+			$x_axis += ($this->orig_width / 2) - ($wm_width / 2);
+		}
+		elseif ($this->wm_hor_alignment === 'R')
+		{
+			$x_axis += $this->orig_width - $wm_width;
+		}
+
+		// Build the finalized image
+		if ($wm_img_type === 3)
+		{
+			@imagealphablending($src_img, TRUE);
+		}
+
+		// Set RGB values for text and shadow
+		$rgba = imagecolorat($wm_img, $this->wm_x_transp, $this->wm_y_transp);
+		$alpha = ($rgba & 0x7F000000) >> 24;
+
+		// make a best guess as to whether we're dealing with an image with alpha transparency or no/binary transparency
+		if ($alpha > 0)
+		{
+			// copy the image directly, the image's alpha transparency being the sole determinant of blending
+			imagecopy($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height);
+		}
+		else
+		{
+			// set our RGB value from above to be transparent and merge the images with the specified opacity
+			imagecolortransparent($wm_img, imagecolorat($wm_img, $this->wm_x_transp, $this->wm_y_transp));
+			imagecopymerge($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height, $this->wm_opacity);
+		}
+
+		// We can preserve transparency for PNG images
+		if ($this->image_type === 3)
+		{
+			imagealphablending($src_img, FALSE);
+			imagesavealpha($src_img, TRUE);
+		}
+
+		// Output the image
+		if ($this->dynamic_output === TRUE)
+		{
+			$this->image_display_gd($src_img);
+		}
+		elseif ( ! $this->image_save_gd($src_img)) // ... or save it
+		{
+			return FALSE;
+		}
+
+		imagedestroy($src_img);
+		imagedestroy($wm_img);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Watermark - Text Version
+	 *
+	 * @return	bool
+	 */
+	public function text_watermark()
+	{
+		if ( ! ($src_img = $this->image_create_gd()))
+		{
+			return FALSE;
+		}
+
+		if ($this->wm_use_truetype === TRUE && ! file_exists($this->wm_font_path))
+		{
+			$this->set_error('imglib_missing_font');
+			return FALSE;
+		}
+
+		// Fetch source image properties
+		$this->get_image_properties();
+
+		// Reverse the vertical offset
+		// When the image is positioned at the bottom
+		// we don't want the vertical offset to push it
+		// further down. We want the reverse, so we'll
+		// invert the offset. Note: The horizontal
+		// offset flips itself automatically
+
+		if ($this->wm_vrt_alignment === 'B')
+		{
+			$this->wm_vrt_offset = $this->wm_vrt_offset * -1;
+		}
+
+		if ($this->wm_hor_alignment === 'R')
+		{
+			$this->wm_hor_offset = $this->wm_hor_offset * -1;
+		}
+
+		// Set font width and height
+		// These are calculated differently depending on
+		// whether we are using the true type font or not
+		if ($this->wm_use_truetype === TRUE)
+		{
+			if (empty($this->wm_font_size))
+			{
+				$this->wm_font_size = 17;
+			}
+
+			if (function_exists('imagettfbbox'))
+			{
+				$temp = imagettfbbox($this->wm_font_size, 0, $this->wm_font_path, $this->wm_text);
+				$temp = $temp[2] - $temp[0];
+
+				$fontwidth = $temp / strlen($this->wm_text);
+			}
+			else
+			{
+				$fontwidth = $this->wm_font_size - ($this->wm_font_size / 4);
+			}
+
+			$fontheight = $this->wm_font_size;
+			$this->wm_vrt_offset += $this->wm_font_size;
+		}
+		else
+		{
+			$fontwidth  = imagefontwidth($this->wm_font_size);
+			$fontheight = imagefontheight($this->wm_font_size);
+		}
+
+		// Set base X and Y axis values
+		$x_axis = $this->wm_hor_offset + $this->wm_padding;
+		$y_axis = $this->wm_vrt_offset + $this->wm_padding;
+
+		if ($this->wm_use_drop_shadow === FALSE)
+		{
+			$this->wm_shadow_distance = 0;
+		}
+
+		$this->wm_vrt_alignment = strtoupper($this->wm_vrt_alignment[0]);
+		$this->wm_hor_alignment = strtoupper($this->wm_hor_alignment[0]);
+
+		// Set vertical alignment
+		if ($this->wm_vrt_alignment === 'M')
+		{
+			$y_axis += ($this->orig_height / 2) + ($fontheight / 2);
+		}
+		elseif ($this->wm_vrt_alignment === 'B')
+		{
+			$y_axis += $this->orig_height - $fontheight - $this->wm_shadow_distance - ($fontheight / 2);
+		}
+
+		// Set horizontal alignment
+		if ($this->wm_hor_alignment === 'R')
+		{
+			$x_axis += $this->orig_width - ($fontwidth * strlen($this->wm_text)) - $this->wm_shadow_distance;
+		}
+		elseif ($this->wm_hor_alignment === 'C')
+		{
+			$x_axis += floor(($this->orig_width - ($fontwidth * strlen($this->wm_text))) / 2);
+		}
+
+		if ($this->wm_use_drop_shadow)
+		{
+			// Offset from text
+			$x_shad = $x_axis + $this->wm_shadow_distance;
+			$y_shad = $y_axis + $this->wm_shadow_distance;
+
+			/* Set RGB values for shadow
+			 *
+			 * First character is #, so we don't really need it.
+			 * Get the rest of the string and split it into 2-length
+			 * hex values:
+			 */
+			$drp_color = str_split(substr($this->wm_shadow_color, 1, 6), 2);
+			$drp_color = imagecolorclosest($src_img, hexdec($drp_color[0]), hexdec($drp_color[1]), hexdec($drp_color[2]));
+
+			// Add the shadow to the source image
+			if ($this->wm_use_truetype)
+			{
+				imagettftext($src_img, $this->wm_font_size, 0, $x_shad, $y_shad, $drp_color, $this->wm_font_path, $this->wm_text);
+			}
+			else
+			{
+				imagestring($src_img, $this->wm_font_size, $x_shad, $y_shad, $this->wm_text, $drp_color);
+			}
+		}
+
+		/* Set RGB values for text
+		 *
+		 * First character is #, so we don't really need it.
+		 * Get the rest of the string and split it into 2-length
+		 * hex values:
+		 */
+		$txt_color = str_split(substr($this->wm_font_color, 1, 6), 2);
+		$txt_color = imagecolorclosest($src_img, hexdec($txt_color[0]), hexdec($txt_color[1]), hexdec($txt_color[2]));
+
+		// Add the text to the source image
+		if ($this->wm_use_truetype)
+		{
+			imagettftext($src_img, $this->wm_font_size, 0, $x_axis, $y_axis, $txt_color, $this->wm_font_path, $this->wm_text);
+		}
+		else
+		{
+			imagestring($src_img, $this->wm_font_size, $x_axis, $y_axis, $this->wm_text, $txt_color);
+		}
+
+		// We can preserve transparency for PNG images
+		if ($this->image_type === 3)
+		{
+			imagealphablending($src_img, FALSE);
+			imagesavealpha($src_img, TRUE);
+		}
+
+		// Output the final image
+		if ($this->dynamic_output === TRUE)
+		{
+			$this->image_display_gd($src_img);
+		}
+		else
+		{
+			$this->image_save_gd($src_img);
+		}
+
+		imagedestroy($src_img);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Image - GD
+	 *
+	 * This simply creates an image resource handle
+	 * based on the type of image being processed
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	resource
+	 */
+	public function image_create_gd($path = '', $image_type = '')
+	{
+		if ($path === '')
+		{
+			$path = $this->full_src_path;
+		}
+
+		if ($image_type === '')
+		{
+			$image_type = $this->image_type;
+		}
+
+		switch ($image_type)
+		{
+			case 1:
+				if ( ! function_exists('imagecreatefromgif'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_gif_not_supported'));
+					return FALSE;
+				}
+
+				return imagecreatefromgif($path);
+			case 2:
+				if ( ! function_exists('imagecreatefromjpeg'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_jpg_not_supported'));
+					return FALSE;
+				}
+
+				return imagecreatefromjpeg($path);
+			case 3:
+				if ( ! function_exists('imagecreatefrompng'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_png_not_supported'));
+					return FALSE;
+				}
+
+				return imagecreatefrompng($path);
+			case 18:
+				if ( ! function_exists('imagecreatefromwebp'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_webp_not_supported'));
+					return FALSE;
+				}
+
+				return imagecreatefromwebp($path);
+			default:
+				$this->set_error(array('imglib_unsupported_imagecreate'));
+				return FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Write image file to disk - GD
+	 *
+	 * Takes an image resource as input and writes the file
+	 * to the specified destination
+	 *
+	 * @param	resource
+	 * @return	bool
+	 */
+	public function image_save_gd($resource)
+	{
+		switch ($this->image_type)
+		{
+			case 1:
+				if ( ! function_exists('imagegif'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_gif_not_supported'));
+					return FALSE;
+				}
+
+				if ( ! @imagegif($resource, $this->full_dst_path))
+				{
+					$this->set_error('imglib_save_failed');
+					return FALSE;
+				}
+			break;
+			case 2:
+				if ( ! function_exists('imagejpeg'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_jpg_not_supported'));
+					return FALSE;
+				}
+
+				if ( ! @imagejpeg($resource, $this->full_dst_path, $this->quality))
+				{
+					$this->set_error('imglib_save_failed');
+					return FALSE;
+				}
+			break;
+			case 3:
+				if ( ! function_exists('imagepng'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_png_not_supported'));
+					return FALSE;
+				}
+
+				if ( ! @imagepng($resource, $this->full_dst_path))
+				{
+					$this->set_error('imglib_save_failed');
+					return FALSE;
+				}
+			break;
+			case 18:
+				if ( ! function_exists('imagewebp'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_webp_not_supported'));
+					return FALSE;
+				}
+
+				if ( ! @imagewebp($resource, $this->full_dst_path))
+				{
+					$this->set_error('imglib_save_failed');
+					return FALSE;
+				}
+			break;
+			default:
+				$this->set_error(array('imglib_unsupported_imagecreate'));
+				return FALSE;
+			break;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Dynamically outputs an image
+	 *
+	 * @param	resource
+	 * @return	void
+	 */
+	public function image_display_gd($resource)
+	{
+		// RFC 6266 allows for multibyte filenames, but only in UTF-8,
+		// so we have to make it conditional ...
+		$filename = basename(empty($this->new_image) ? $this->source_image : $this->new_image);
+		$charset = strtoupper(config_item('charset'));
+		$utf8_filename = ($charset !== 'UTF-8')
+			? get_instance()->utf8->convert_to_utf8($filename, $charset)
+			: $filename;
+		isset($utf8_filename[0]) && $utf8_filename = " filename*=UTF-8''".rawurlencode($utf8_filename);
+
+		header('Content-Disposition: filename="'.$filename.'";'.$utf8_filename);
+		header('Content-Type: '.$this->mime_type);
+		header('Content-Transfer-Encoding: binary');
+		header('Last-Modified: '.gmdate('D, d M Y H:i:s', time()).' GMT');
+
+		switch ($this->image_type)
+		{
+			case 1	:	imagegif($resource);
+				break;
+			case 2	:	imagejpeg($resource, NULL, $this->quality);
+				break;
+			case 3	:	imagepng($resource);
+				break;
+			case 18	:	imagewebp($resource);
+				break;
+			default:	echo 'Unable to display the image';
+				break;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Re-proportion Image Width/Height
+	 *
+	 * When creating thumbs, the desired width/height
+	 * can end up warping the image due to an incorrect
+	 * ratio between the full-sized image and the thumb.
+	 *
+	 * This function lets us re-proportion the width/height
+	 * if users choose to maintain the aspect ratio when resizing.
+	 *
+	 * @return	void
+	 */
+	public function image_reproportion()
+	{
+		if (($this->width === 0 && $this->height === 0) OR $this->orig_width === 0 OR $this->orig_height === 0
+			OR ( ! ctype_digit((string) $this->width) && ! ctype_digit((string) $this->height))
+			OR ! ctype_digit((string) $this->orig_width) OR ! ctype_digit((string) $this->orig_height))
+		{
+			return;
+		}
+
+		// Sanitize
+		$this->width = (int) $this->width;
+		$this->height = (int) $this->height;
+
+		if ($this->master_dim !== 'width' && $this->master_dim !== 'height')
+		{
+			if ($this->width > 0 && $this->height > 0)
+			{
+				$this->master_dim = ((($this->orig_height/$this->orig_width) - ($this->height/$this->width)) < 0)
+							? 'width' : 'height';
+			}
+			else
+			{
+				$this->master_dim = ($this->height === 0) ? 'width' : 'height';
+			}
+		}
+		elseif (($this->master_dim === 'width' && $this->width === 0)
+			OR ($this->master_dim === 'height' && $this->height === 0))
+		{
+			return;
+		}
+
+		if ($this->master_dim === 'width')
+		{
+			$this->height = (int) ceil($this->width*$this->orig_height/$this->orig_width);
+		}
+		else
+		{
+			$this->width = (int) ceil($this->orig_width*$this->height/$this->orig_height);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get image properties
+	 *
+	 * A helper function that gets info about the file
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	mixed
+	 */
+	public function get_image_properties($path = '', $return = FALSE)
+	{
+		// For now we require GD but we should
+		// find a way to determine this using IM or NetPBM
+
+		if ($path === '')
+		{
+			$path = $this->full_src_path;
+		}
+
+		if ( ! file_exists($path))
+		{
+			$this->set_error('imglib_invalid_path');
+			return FALSE;
+		}
+
+		$vals = getimagesize($path);
+		if ($vals === FALSE)
+		{
+			$this->set_error('imglib_invalid_image');
+			return FALSE;
+		}
+
+		$types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png');
+		$mime = isset($types[$vals[2]]) ? 'image/'.$types[$vals[2]] : 'image/jpg';
+
+		if ($return === TRUE)
+		{
+			return array(
+				'width'      => $vals[0],
+				'height'     => $vals[1],
+				'image_type' => $vals[2],
+				'size_str'   => $vals[3],
+				'mime_type'  => $mime
+			);
+		}
+
+		$this->orig_width  = $vals[0];
+		$this->orig_height = $vals[1];
+		$this->image_type  = $vals[2];
+		$this->size_str    = $vals[3];
+		$this->mime_type   = $mime;
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Size calculator
+	 *
+	 * This function takes a known width x height and
+	 * recalculates it to a new size. Only one
+	 * new variable needs to be known
+	 *
+	 *	$props = array(
+	 *			'width'		=> $width,
+	 *			'height'	=> $height,
+	 *			'new_width'	=> 40,
+	 *			'new_height'	=> ''
+	 *		);
+	 *
+	 * @param	array
+	 * @return	array
+	 */
+	public function size_calculator($vals)
+	{
+		if ( ! is_array($vals))
+		{
+			return;
+		}
+
+		$allowed = array('new_width', 'new_height', 'width', 'height');
+
+		foreach ($allowed as $item)
+		{
+			if (empty($vals[$item]))
+			{
+				$vals[$item] = 0;
+			}
+		}
+
+		if ($vals['width'] === 0 OR $vals['height'] === 0)
+		{
+			return $vals;
+		}
+
+		if ($vals['new_width'] === 0)
+		{
+			$vals['new_width'] = ceil($vals['width']*$vals['new_height']/$vals['height']);
+		}
+		elseif ($vals['new_height'] === 0)
+		{
+			$vals['new_height'] = ceil($vals['new_width']*$vals['height']/$vals['width']);
+		}
+
+		return $vals;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Explode source_image
+	 *
+	 * This is a helper function that extracts the extension
+	 * from the source_image.  This function lets us deal with
+	 * source_images with multiple periods, like: my.cool.jpg
+	 * It returns an associative array with two elements:
+	 * $array['ext']  = '.jpg';
+	 * $array['name'] = 'my.cool';
+	 *
+	 * @param	array
+	 * @return	array
+	 */
+	public function explode_name($source_image)
+	{
+		$ext = strrchr($source_image, '.');
+		$name = ($ext === FALSE) ? $source_image : substr($source_image, 0, -strlen($ext));
+
+		return array('ext' => $ext, 'name' => $name);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is GD Installed?
+	 *
+	 * @return	bool
+	 */
+	public function gd_loaded()
+	{
+		if ( ! extension_loaded('gd'))
+		{
+			/* As it is stated in the PHP manual, dl() is not always available
+			 * and even if so - it could generate an E_WARNING message on failure
+			 */
+			return (function_exists('dl') && @dl('gd.so'));
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get GD version
+	 *
+	 * @return	mixed
+	 */
+	public function gd_version()
+	{
+		if (function_exists('gd_info'))
+		{
+			$gd_version = @gd_info();
+			return preg_replace('/\D/', '', $gd_version['GD Version']);
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set error message
+	 *
+	 * @param	string
+	 * @return	void
+	 */
+	public function set_error($msg)
+	{
+		$CI =& get_instance();
+		$CI->lang->load('imglib');
+
+		if (is_array($msg))
+		{
+			foreach ($msg as $val)
+			{
+				$msg = ($CI->lang->line($val) === FALSE) ? $val : $CI->lang->line($val);
+				$this->error_msg[] = $msg;
+				log_message('error', $msg);
+			}
+		}
+		else
+		{
+			$msg = ($CI->lang->line($msg) === FALSE) ? $msg : $CI->lang->line($msg);
+			$this->error_msg[] = $msg;
+			log_message('error', $msg);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show error messages
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	public function display_errors($open = '<p>', $close = '</p>')
+	{
+		return (count($this->error_msg) > 0) ? $open.implode($close.$open, $this->error_msg).$close : '';
+	}
+
+}
diff --git a/system/libraries/Migration.php b/system/libraries/Migration.php
new file mode 100644
index 00000000..915d4e45
--- /dev/null
+++ b/system/libraries/Migration.php
@@ -0,0 +1,477 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Migration Class
+ *
+ * All migrations should implement this, forces up() and down() and gives
+ * access to the CI super-global.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		Reactor Engineers
+ * @link
+ */
+class CI_Migration {
+
+	/**
+	 * Whether the library is enabled
+	 *
+	 * @var bool
+	 */
+	protected $_migration_enabled = FALSE;
+
+	/**
+	 * Migration numbering type
+	 *
+	 * @var	bool
+	 */
+	protected $_migration_type = 'sequential';
+
+	/**
+	 * Path to migration classes
+	 *
+	 * @var string
+	 */
+	protected $_migration_path = NULL;
+
+	/**
+	 * Current migration version
+	 *
+	 * @var mixed
+	 */
+	protected $_migration_version = 0;
+
+	/**
+	 * Database table with migration info
+	 *
+	 * @var string
+	 */
+	protected $_migration_table = 'migrations';
+
+	/**
+	 * Whether to automatically run migrations
+	 *
+	 * @var	bool
+	 */
+	protected $_migration_auto_latest = FALSE;
+
+	/**
+	 * Migration basename regex
+	 *
+	 * @var string
+	 */
+	protected $_migration_regex;
+
+	/**
+	 * Error message
+	 *
+	 * @var string
+	 */
+	protected $_error_string = '';
+
+	/**
+	 * Initialize Migration Class
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		// Only run this constructor on main library load
+		if ( ! in_array(get_class($this), array('CI_Migration', config_item('subclass_prefix').'Migration'), TRUE))
+		{
+			return;
+		}
+
+		foreach ($config as $key => $val)
+		{
+			$this->{'_'.$key} = $val;
+		}
+
+		log_message('info', 'Migrations Class Initialized');
+
+		// Are they trying to use migrations while it is disabled?
+		if ($this->_migration_enabled !== TRUE)
+		{
+			show_error('Migrations has been loaded but is disabled or set up incorrectly.');
+		}
+
+		// If not set, set it
+		$this->_migration_path !== '' OR $this->_migration_path = APPPATH.'migrations/';
+
+		// Add trailing slash if not set
+		$this->_migration_path = rtrim($this->_migration_path, '/').'/';
+
+		// Load migration language
+		$this->lang->load('migration');
+
+		// They'll probably be using dbforge
+		$this->load->dbforge();
+
+		// Make sure the migration table name was set.
+		if (empty($this->_migration_table))
+		{
+			show_error('Migrations configuration file (migration.php) must have "migration_table" set.');
+		}
+
+		// Migration basename regex
+		$this->_migration_regex = ($this->_migration_type === 'timestamp')
+			? '/^\d{14}_(\w+)$/'
+			: '/^\d{3}_(\w+)$/';
+
+		// Make sure a valid migration numbering type was set.
+		if ( ! in_array($this->_migration_type, array('sequential', 'timestamp')))
+		{
+			show_error('An invalid migration numbering type was specified: '.$this->_migration_type);
+		}
+
+		// If the migrations table is missing, make it
+		if ( ! $this->db->table_exists($this->_migration_table))
+		{
+			$this->dbforge->add_field(array(
+				'version' => array('type' => 'BIGINT', 'constraint' => 20),
+			));
+
+			$this->dbforge->create_table($this->_migration_table, TRUE);
+
+			$this->db->insert($this->_migration_table, array('version' => 0));
+		}
+
+		// Do we auto migrate to the latest migration?
+		if ($this->_migration_auto_latest === TRUE && ! $this->latest())
+		{
+			show_error($this->error_string());
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Migrate to a schema version
+	 *
+	 * Calls each migration step required to get to the schema version of
+	 * choice
+	 *
+	 * @param	string	$target_version	Target schema version
+	 * @return	mixed	TRUE if no migrations are found, current version string on success, FALSE on failure
+	 */
+	public function version($target_version)
+	{
+		// Note: We use strings, so that timestamp versions work on 32-bit systems
+		$current_version = $this->_get_version();
+
+		if ($this->_migration_type === 'sequential')
+		{
+			$target_version = sprintf('%03d', $target_version);
+		}
+		else
+		{
+			$target_version = (string) $target_version;
+		}
+
+		$migrations = $this->find_migrations();
+
+		if ($target_version > 0 && ! isset($migrations[$target_version]))
+		{
+			$this->_error_string = sprintf($this->lang->line('migration_not_found'), $target_version);
+			return FALSE;
+		}
+
+		if ($target_version > $current_version)
+		{
+			$method = 'up';
+		}
+		elseif ($target_version < $current_version)
+		{
+			$method = 'down';
+			// We need this so that migrations are applied in reverse order
+			krsort($migrations);
+		}
+		else
+		{
+			// Well, there's nothing to migrate then ...
+			return TRUE;
+		}
+
+		// Validate all available migrations within our target range.
+		//
+		// Unfortunately, we'll have to use another loop to run them
+		// in order to avoid leaving the procedure in a broken state.
+		//
+		// See https://github.com/bcit-ci/CodeIgniter/issues/4539
+		$pending = array();
+		foreach ($migrations as $number => $file)
+		{
+			// Ignore versions out of our range.
+			//
+			// Because we've previously sorted the $migrations array depending on the direction,
+			// we can safely break the loop once we reach $target_version ...
+			if ($method === 'up')
+			{
+				if ($number <= $current_version)
+				{
+					continue;
+				}
+				elseif ($number > $target_version)
+				{
+					break;
+				}
+			}
+			else
+			{
+				if ($number > $current_version)
+				{
+					continue;
+				}
+				elseif ($number <= $target_version)
+				{
+					break;
+				}
+			}
+
+			// Check for sequence gaps
+			if ($this->_migration_type === 'sequential')
+			{
+				if (isset($previous) && abs($number - $previous) > 1)
+				{
+					$this->_error_string = sprintf($this->lang->line('migration_sequence_gap'), $number);
+					return FALSE;
+				}
+
+				$previous = $number;
+			}
+
+			include_once($file);
+			$class = 'Migration_'.ucfirst(strtolower($this->_get_migration_name(basename($file, '.php'))));
+
+			// Validate the migration file structure
+			if ( ! class_exists($class, FALSE))
+			{
+				$this->_error_string = sprintf($this->lang->line('migration_class_doesnt_exist'), $class);
+				return FALSE;
+			}
+			elseif ( ! method_exists($class, $method) OR ! (new ReflectionMethod($class, $method))->isPublic())
+			{
+				$this->_error_string = sprintf($this->lang->line('migration_missing_'.$method.'_method'), $class);
+				return FALSE;
+			}
+
+			$pending[$number] = array($class, $method);
+		}
+
+		// Now just run the necessary migrations
+		foreach ($pending as $number => $migration)
+		{
+			log_message('debug', 'Migrating '.$method.' from version '.$current_version.' to version '.$number);
+
+			$migration[0] = new $migration[0];
+			call_user_func($migration);
+			$current_version = $number;
+			$this->_update_version($current_version);
+		}
+
+		// This is necessary when moving down, since the the last migration applied
+		// will be the down() method for the next migration up from the target
+		if ($current_version <> $target_version)
+		{
+			$current_version = $target_version;
+			$this->_update_version($current_version);
+		}
+
+		log_message('debug', 'Finished migrating to '.$current_version);
+		return $current_version;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sets the schema to the latest migration
+	 *
+	 * @return	mixed	Current version string on success, FALSE on failure
+	 */
+	public function latest()
+	{
+		$migrations = $this->find_migrations();
+
+		if (empty($migrations))
+		{
+			$this->_error_string = $this->lang->line('migration_none_found');
+			return FALSE;
+		}
+
+		$last_migration = basename(end($migrations));
+
+		// Calculate the last migration step from existing migration
+		// filenames and proceed to the standard version migration
+		return $this->version($this->_get_migration_number($last_migration));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sets the schema to the migration version set in config
+	 *
+	 * @return	mixed	TRUE if no migrations are found, current version string on success, FALSE on failure
+	 */
+	public function current()
+	{
+		return $this->version($this->_migration_version);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error string
+	 *
+	 * @return	string	Error message returned as a string
+	 */
+	public function error_string()
+	{
+		return $this->_error_string;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Retrieves list of available migration scripts
+	 *
+	 * @return	array	list of migration file paths sorted by version
+	 */
+	public function find_migrations()
+	{
+		$migrations = array();
+
+		// Load all *_*.php files in the migrations path
+		foreach (glob($this->_migration_path.'*_*.php') as $file)
+		{
+			$name = basename($file, '.php');
+
+			// Filter out non-migration files
+			if (preg_match($this->_migration_regex, $name))
+			{
+				$number = $this->_get_migration_number($name);
+
+				// There cannot be duplicate migration numbers
+				if (isset($migrations[$number]))
+				{
+					$this->_error_string = sprintf($this->lang->line('migration_multiple_version'), $number);
+					show_error($this->_error_string);
+				}
+
+				$migrations[$number] = $file;
+			}
+		}
+
+		ksort($migrations);
+		return $migrations;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Extracts the migration number from a filename
+	 *
+	 * @param	string	$migration
+	 * @return	string	Numeric portion of a migration filename
+	 */
+	protected function _get_migration_number($migration)
+	{
+		return sscanf($migration, '%[0-9]+', $number)
+			? $number : '0';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Extracts the migration class name from a filename
+	 *
+	 * @param	string	$migration
+	 * @return	string	text portion of a migration filename
+	 */
+	protected function _get_migration_name($migration)
+	{
+		$parts = explode('_', $migration);
+		array_shift($parts);
+		return implode('_', $parts);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Retrieves current schema version
+	 *
+	 * @return	string	Current migration version
+	 */
+	protected function _get_version()
+	{
+		$row = $this->db->select('version')->get($this->_migration_table)->row();
+		return $row ? $row->version : '0';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Stores the current schema version
+	 *
+	 * @param	string	$migration	Migration reached
+	 * @return	void
+	 */
+	protected function _update_version($migration)
+	{
+		$this->db->update($this->_migration_table, array(
+			'version' => $migration
+		));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Enable the use of CI super-global
+	 *
+	 * @param	string	$var
+	 * @return	mixed
+	 */
+	public function __get($var)
+	{
+		return get_instance()->$var;
+	}
+
+}
diff --git a/system/libraries/Pagination.php b/system/libraries/Pagination.php
new file mode 100644
index 00000000..20418c00
--- /dev/null
+++ b/system/libraries/Pagination.php
@@ -0,0 +1,704 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Pagination Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Pagination
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/pagination.html
+ */
+class CI_Pagination {
+
+	/**
+	 * Base URL
+	 *
+	 * The page that we're linking to
+	 *
+	 * @var	string
+	 */
+	protected $base_url		= '';
+
+	/**
+	 * Prefix
+	 *
+	 * @var	string
+	 */
+	protected $prefix = '';
+
+	/**
+	 * Suffix
+	 *
+	 * @var	string
+	 */
+	protected $suffix = '';
+
+	/**
+	 * Total number of items
+	 *
+	 * @var	int
+	 */
+	protected $total_rows = 0;
+
+	/**
+	 * Number of links to show
+	 *
+	 * Relates to "digit" type links shown before/after
+	 * the currently viewed page.
+	 *
+	 * @var	int
+	 */
+	protected $num_links = 2;
+
+	/**
+	 * Items per page
+	 *
+	 * @var	int
+	 */
+	public $per_page = 10;
+
+	/**
+	 * Current page
+	 *
+	 * @var	int
+	 */
+	public $cur_page = 0;
+
+	/**
+	 * Use page numbers flag
+	 *
+	 * Whether to use actual page numbers instead of an offset
+	 *
+	 * @var	bool
+	 */
+	protected $use_page_numbers = FALSE;
+
+	/**
+	 * First link
+	 *
+	 * @var	string
+	 */
+	protected $first_link = '&lsaquo; First';
+
+	/**
+	 * Next link
+	 *
+	 * @var	string
+	 */
+	protected $next_link = '&gt;';
+
+	/**
+	 * Previous link
+	 *
+	 * @var	string
+	 */
+	protected $prev_link = '&lt;';
+
+	/**
+	 * Last link
+	 *
+	 * @var	string
+	 */
+	protected $last_link = 'Last &rsaquo;';
+
+	/**
+	 * URI Segment
+	 *
+	 * @var	int
+	 */
+	protected $uri_segment = 0;
+
+	/**
+	 * Full tag open
+	 *
+	 * @var	string
+	 */
+	protected $full_tag_open = '';
+
+	/**
+	 * Full tag close
+	 *
+	 * @var	string
+	 */
+	protected $full_tag_close = '';
+
+	/**
+	 * First tag open
+	 *
+	 * @var	string
+	 */
+	protected $first_tag_open = '';
+
+	/**
+	 * First tag close
+	 *
+	 * @var	string
+	 */
+	protected $first_tag_close = '';
+
+	/**
+	 * Last tag open
+	 *
+	 * @var	string
+	 */
+	protected $last_tag_open = '';
+
+	/**
+	 * Last tag close
+	 *
+	 * @var	string
+	 */
+	protected $last_tag_close = '';
+
+	/**
+	 * First URL
+	 *
+	 * An alternative URL for the first page
+	 *
+	 * @var	string
+	 */
+	protected $first_url = '';
+
+	/**
+	 * Current tag open
+	 *
+	 * @var	string
+	 */
+	protected $cur_tag_open = '<strong>';
+
+	/**
+	 * Current tag close
+	 *
+	 * @var	string
+	 */
+	protected $cur_tag_close = '</strong>';
+
+	/**
+	 * Next tag open
+	 *
+	 * @var	string
+	 */
+	protected $next_tag_open = '';
+
+	/**
+	 * Next tag close
+	 *
+	 * @var	string
+	 */
+	protected $next_tag_close = '';
+
+	/**
+	 * Previous tag open
+	 *
+	 * @var	string
+	 */
+	protected $prev_tag_open = '';
+
+	/**
+	 * Previous tag close
+	 *
+	 * @var	string
+	 */
+	protected $prev_tag_close = '';
+
+	/**
+	 * Number tag open
+	 *
+	 * @var	string
+	 */
+	protected $num_tag_open = '';
+
+	/**
+	 * Number tag close
+	 *
+	 * @var	string
+	 */
+	protected $num_tag_close = '';
+
+	/**
+	 * Page query string flag
+	 *
+	 * @var	bool
+	 */
+	protected $page_query_string = FALSE;
+
+	/**
+	 * Query string segment
+	 *
+	 * @var	string
+	 */
+	protected $query_string_segment = 'per_page';
+
+	/**
+	 * Display pages flag
+	 *
+	 * @var	bool
+	 */
+	protected $display_pages = TRUE;
+
+	/**
+	 * Attributes
+	 *
+	 * @var	string
+	 */
+	protected $_attributes = '';
+
+	/**
+	 * Link types
+	 *
+	 * "rel" attribute
+	 *
+	 * @see	CI_Pagination::_attr_rel()
+	 * @var	array
+	 */
+	protected $_link_types = array();
+
+	/**
+	 * Reuse query string flag
+	 *
+	 * @var	bool
+	 */
+	protected $reuse_query_string = FALSE;
+
+	/**
+	 * Use global URL suffix flag
+	 *
+	 * @var	bool
+	 */
+	protected $use_global_url_suffix = FALSE;
+
+	/**
+	 * Data page attribute
+	 *
+	 * @var	string
+	 */
+	protected $data_page_attr = 'data-ci-pagination-page';
+
+	/**
+	 * CI Singleton
+	 *
+	 * @var	object
+	 */
+	protected $CI;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	array	$params	Initialization parameters
+	 * @return	void
+	 */
+	public function __construct($params = array())
+	{
+		$this->CI =& get_instance();
+		$this->CI->load->language('pagination');
+		foreach (array('first_link', 'next_link', 'prev_link', 'last_link') as $key)
+		{
+			if (($val = $this->CI->lang->line('pagination_'.$key)) !== FALSE)
+			{
+				$this->$key = $val;
+			}
+		}
+
+		// _parse_attributes(), called by initialize(), needs to run at least once
+		// in order to enable "rel" attributes, and this triggers it.
+		isset($params['attributes']) OR $params['attributes'] = array();
+
+		$this->initialize($params);
+		log_message('info', 'Pagination Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize Preferences
+	 *
+	 * @param	array	$params	Initialization parameters
+	 * @return	CI_Pagination
+	 */
+	public function initialize(array $params = array())
+	{
+		if (isset($params['attributes']) && is_array($params['attributes']))
+		{
+			$this->_parse_attributes($params['attributes']);
+			unset($params['attributes']);
+		}
+
+		// Deprecated legacy support for the anchor_class option
+		// Should be removed in CI 3.1+
+		if (isset($params['anchor_class']))
+		{
+			empty($params['anchor_class']) OR $attributes['class'] = $params['anchor_class'];
+			unset($params['anchor_class']);
+		}
+
+		foreach ($params as $key => $val)
+		{
+			if (property_exists($this, $key))
+			{
+				$this->$key = $val;
+			}
+		}
+
+		if ($this->CI->config->item('enable_query_strings') === TRUE)
+		{
+			$this->page_query_string = TRUE;
+		}
+
+		if ($this->use_global_url_suffix === TRUE)
+		{
+			$this->suffix = $this->CI->config->item('url_suffix');
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate the pagination links
+	 *
+	 * @return	string
+	 */
+	public function create_links()
+	{
+		// If our item count or per-page total is zero there is no need to continue.
+		// Note: DO NOT change the operator to === here!
+		if ($this->total_rows == 0 OR $this->per_page == 0)
+		{
+			return '';
+		}
+
+		// Calculate the total number of pages
+		$num_pages = (int) ceil($this->total_rows / $this->per_page);
+
+		// Is there only one page? Hm... nothing more to do here then.
+		if ($num_pages === 1)
+		{
+			return '';
+		}
+
+		// Check the user defined number of links.
+		$this->num_links = (int) $this->num_links;
+
+		if ($this->num_links < 0)
+		{
+			show_error('Your number of links must be a non-negative number.');
+		}
+
+		// Keep any existing query string items.
+		// Note: Has nothing to do with any other query string option.
+		if ($this->reuse_query_string === TRUE)
+		{
+			$get = $this->CI->input->get();
+
+			// Unset the control, method, old-school routing options
+			unset($get['c'], $get['m'], $get[$this->query_string_segment]);
+		}
+		else
+		{
+			$get = array();
+		}
+
+		// Put together our base and first URLs.
+		// Note: DO NOT append to the properties as that would break successive calls
+		$base_url = trim($this->base_url);
+		$first_url = $this->first_url;
+
+		$query_string = '';
+		$query_string_sep = (strpos($base_url, '?') === FALSE) ? '?' : '&amp;';
+
+		// Are we using query strings?
+		if ($this->page_query_string === TRUE)
+		{
+			// If a custom first_url hasn't been specified, we'll create one from
+			// the base_url, but without the page item.
+			if ($first_url === '')
+			{
+				$first_url = $base_url;
+
+				// If we saved any GET items earlier, make sure they're appended.
+				if ( ! empty($get))
+				{
+					$first_url .= $query_string_sep.http_build_query($get);
+				}
+			}
+
+			// Add the page segment to the end of the query string, where the
+			// page number will be appended.
+			$base_url .= $query_string_sep.http_build_query(array_merge($get, array($this->query_string_segment => '')));
+		}
+		else
+		{
+			// Standard segment mode.
+			// Generate our saved query string to append later after the page number.
+			if ( ! empty($get))
+			{
+				$query_string = $query_string_sep.http_build_query($get);
+				$this->suffix .= $query_string;
+			}
+
+			// Does the base_url have the query string in it?
+			// If we're supposed to save it, remove it so we can append it later.
+			if ($this->reuse_query_string === TRUE && ($base_query_pos = strpos($base_url, '?')) !== FALSE)
+			{
+				$base_url = substr($base_url, 0, $base_query_pos);
+			}
+
+			if ($first_url === '')
+			{
+				$first_url = $base_url.$query_string;
+			}
+
+			$base_url = rtrim($base_url, '/').'/';
+		}
+
+		// Determine the current page number.
+		$base_page = ($this->use_page_numbers) ? 1 : 0;
+
+		// Are we using query strings?
+		if ($this->page_query_string === TRUE)
+		{
+			$this->cur_page = $this->CI->input->get($this->query_string_segment);
+		}
+		elseif (empty($this->cur_page))
+		{
+			// Default to the last segment number if one hasn't been defined.
+			if ($this->uri_segment === 0)
+			{
+				$this->uri_segment = count($this->CI->uri->segment_array());
+			}
+
+			$this->cur_page = $this->CI->uri->segment($this->uri_segment);
+
+			// Remove any specified prefix/suffix from the segment.
+			if ($this->prefix !== '' OR $this->suffix !== '')
+			{
+				$this->cur_page = str_replace(array($this->prefix, $this->suffix), '', $this->cur_page);
+			}
+		}
+		else
+		{
+			$this->cur_page = (string) $this->cur_page;
+		}
+
+		// If something isn't quite right, back to the default base page.
+		if ( ! ctype_digit($this->cur_page) OR ($this->use_page_numbers && (int) $this->cur_page === 0))
+		{
+			$this->cur_page = $base_page;
+		}
+		else
+		{
+			// Make sure we're using integers for comparisons later.
+			$this->cur_page = (int) $this->cur_page;
+		}
+
+		// Is the page number beyond the result range?
+		// If so, we show the last page.
+		if ($this->use_page_numbers)
+		{
+			if ($this->cur_page > $num_pages)
+			{
+				$this->cur_page = $num_pages;
+			}
+		}
+		elseif ($this->cur_page > $this->total_rows)
+		{
+			$this->cur_page = ($num_pages - 1) * $this->per_page;
+		}
+
+		$uri_page_number = $this->cur_page;
+
+		// If we're using offset instead of page numbers, convert it
+		// to a page number, so we can generate the surrounding number links.
+		if ( ! $this->use_page_numbers)
+		{
+			$this->cur_page = (int) floor(($this->cur_page/$this->per_page) + 1);
+		}
+
+		// Calculate the start and end numbers. These determine
+		// which number to start and end the digit links with.
+		$start	= (($this->cur_page - $this->num_links) > 0) ? $this->cur_page - ($this->num_links - 1) : 1;
+		$end	= (($this->cur_page + $this->num_links) < $num_pages) ? $this->cur_page + $this->num_links : $num_pages;
+
+		// And here we go...
+		$output = '';
+
+		// Render the "First" link.
+		if ($this->first_link !== FALSE && $this->cur_page > ($this->num_links + 1 + ! $this->num_links))
+		{
+			// Take the general parameters, and squeeze this pagination-page attr in for JS frameworks.
+			$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, 1);
+
+			$output .= $this->first_tag_open.'<a href="'.$first_url.'"'.$attributes.$this->_attr_rel('start').'>'
+				.$this->first_link.'</a>'.$this->first_tag_close;
+		}
+
+		// Render the "Previous" link.
+		if ($this->prev_link !== FALSE && $this->cur_page !== 1)
+		{
+			$i = ($this->use_page_numbers) ? $uri_page_number - 1 : $uri_page_number - $this->per_page;
+
+			$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, ($this->cur_page - 1));
+
+			if ($i === $base_page)
+			{
+				// First page
+				$output .= $this->prev_tag_open.'<a href="'.$first_url.'"'.$attributes.$this->_attr_rel('prev').'>'
+					.$this->prev_link.'</a>'.$this->prev_tag_close;
+			}
+			else
+			{
+				$append = $this->prefix.$i.$this->suffix;
+				$output .= $this->prev_tag_open.'<a href="'.$base_url.$append.'"'.$attributes.$this->_attr_rel('prev').'>'
+					.$this->prev_link.'</a>'.$this->prev_tag_close;
+			}
+
+		}
+
+		// Render the pages
+		if ($this->display_pages !== FALSE)
+		{
+			// Write the digit links
+			for ($loop = $start - 1; $loop <= $end; $loop++)
+			{
+				$i = ($this->use_page_numbers) ? $loop : ($loop * $this->per_page) - $this->per_page;
+
+				$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, $loop);
+
+				if ($i >= $base_page)
+				{
+					if ($this->cur_page === $loop)
+					{
+						// Current page
+						$output .= $this->cur_tag_open.$loop.$this->cur_tag_close;
+					}
+					elseif ($i === $base_page)
+					{
+						// First page
+						$output .= $this->num_tag_open.'<a href="'.$first_url.'"'.$attributes.$this->_attr_rel('start').'>'
+							.$loop.'</a>'.$this->num_tag_close;
+					}
+					else
+					{
+						$append = $this->prefix.$i.$this->suffix;
+						$output .= $this->num_tag_open.'<a href="'.$base_url.$append.'"'.$attributes.'>'
+							.$loop.'</a>'.$this->num_tag_close;
+					}
+				}
+			}
+		}
+
+		// Render the "next" link
+		if ($this->next_link !== FALSE && $this->cur_page < $num_pages)
+		{
+			$i = ($this->use_page_numbers) ? $this->cur_page + 1 : $this->cur_page * $this->per_page;
+
+			$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, $this->cur_page + 1);
+
+			$output .= $this->next_tag_open.'<a href="'.$base_url.$this->prefix.$i.$this->suffix.'"'.$attributes
+				.$this->_attr_rel('next').'>'.$this->next_link.'</a>'.$this->next_tag_close;
+		}
+
+		// Render the "Last" link
+		if ($this->last_link !== FALSE && ($this->cur_page + $this->num_links + ! $this->num_links) < $num_pages)
+		{
+			$i = ($this->use_page_numbers) ? $num_pages : ($num_pages * $this->per_page) - $this->per_page;
+
+			$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, $num_pages);
+
+			$output .= $this->last_tag_open.'<a href="'.$base_url.$this->prefix.$i.$this->suffix.'"'.$attributes.'>'
+				.$this->last_link.'</a>'.$this->last_tag_close;
+		}
+
+		// Kill double slashes. Note: Sometimes we can end up with a double slash
+		// in the penultimate link so we'll kill all double slashes.
+		$output = preg_replace('#([^:"])//+#', '\\1/', $output);
+
+		// Add the wrapper HTML if exists
+		return $this->full_tag_open.$output.$this->full_tag_close;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse attributes
+	 *
+	 * @param	array	$attributes
+	 * @return	void
+	 */
+	protected function _parse_attributes($attributes)
+	{
+		isset($attributes['rel']) OR $attributes['rel'] = TRUE;
+		$this->_link_types = ($attributes['rel'])
+			? array('start' => 'start', 'prev' => 'prev', 'next' => 'next')
+			: array();
+		unset($attributes['rel']);
+
+		$this->_attributes = '';
+		foreach ($attributes as $key => $value)
+		{
+			$this->_attributes .= ' '.$key.'="'.$value.'"';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add "rel" attribute
+	 *
+	 * @link	https://www.w3.org/TR/html5/links.html#linkTypes
+	 * @param	string	$type
+	 * @return	string
+	 */
+	protected function _attr_rel($type)
+	{
+		if (isset($this->_link_types[$type]))
+		{
+			unset($this->_link_types[$type]);
+			return ' rel="'.$type.'"';
+		}
+
+		return '';
+	}
+
+}
diff --git a/system/libraries/Parser.php b/system/libraries/Parser.php
new file mode 100644
index 00000000..04476f1a
--- /dev/null
+++ b/system/libraries/Parser.php
@@ -0,0 +1,248 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Parser Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Parser
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/parser.html
+ */
+class CI_Parser {
+
+	/**
+	 * Left delimiter character for pseudo vars
+	 *
+	 * @var string
+	 */
+	public $l_delim = '{';
+
+	/**
+	 * Right delimiter character for pseudo vars
+	 *
+	 * @var string
+	 */
+	public $r_delim = '}';
+
+	/**
+	 * Reference to CodeIgniter instance
+	 *
+	 * @var object
+	 */
+	protected $CI;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$this->CI =& get_instance();
+		log_message('info', 'Parser Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse a template
+	 *
+	 * Parses pseudo-variables contained in the specified template view,
+	 * replacing them with the data in the second param
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	bool
+	 * @return	string
+	 */
+	public function parse($template, $data, $return = FALSE)
+	{
+		$template = $this->CI->load->view($template, $data, TRUE);
+
+		return $this->_parse($template, $data, $return);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse a String
+	 *
+	 * Parses pseudo-variables contained in the specified string,
+	 * replacing them with the data in the second param
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	bool
+	 * @return	string
+	 */
+	public function parse_string($template, $data, $return = FALSE)
+	{
+		return $this->_parse($template, $data, $return);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse a template
+	 *
+	 * Parses pseudo-variables contained in the specified template,
+	 * replacing them with the data in the second param
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	bool
+	 * @return	string
+	 */
+	protected function _parse($template, $data, $return = FALSE)
+	{
+		if ($template === '')
+		{
+			return FALSE;
+		}
+
+		$replace = array();
+		foreach ($data as $key => $val)
+		{
+			$replace = array_merge(
+				$replace,
+				is_array($val)
+					? $this->_parse_pair($key, $val, $template)
+					: $this->_parse_single($key, (string) $val, $template)
+			);
+		}
+
+		unset($data);
+		$template = strtr($template, $replace);
+
+		if ($return === FALSE)
+		{
+			$this->CI->output->append_output($template);
+		}
+
+		return $template;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the left/right variable delimiters
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	void
+	 */
+	public function set_delimiters($l = '{', $r = '}')
+	{
+		$this->l_delim = $l;
+		$this->r_delim = $r;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse a single key/value
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _parse_single($key, $val, $string)
+	{
+		return array($this->l_delim.$key.$this->r_delim => (string) $val);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse a tag pair
+	 *
+	 * Parses tag pairs: {some_tag} string... {/some_tag}
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _parse_pair($variable, $data, $string)
+	{
+		$replace = array();
+		preg_match_all(
+			'#'.preg_quote($this->l_delim.$variable.$this->r_delim).'(.+?)'.preg_quote($this->l_delim.'/'.$variable.$this->r_delim).'#s',
+			$string,
+			$matches,
+			PREG_SET_ORDER
+		);
+
+		foreach ($matches as $match)
+		{
+			$str = '';
+			foreach ($data as $row)
+			{
+				$temp = array();
+				foreach ($row as $key => $val)
+				{
+					if (is_array($val))
+					{
+						$pair = $this->_parse_pair($key, $val, $match[1]);
+						if ( ! empty($pair))
+						{
+							$temp = array_merge($temp, $pair);
+						}
+
+						continue;
+					}
+
+					$temp[$this->l_delim.$key.$this->r_delim] = $val;
+				}
+
+				$str .= strtr($match[1], $temp);
+			}
+
+			$replace[$match[0]] = $str;
+		}
+
+		return $replace;
+	}
+
+}
diff --git a/system/libraries/Profiler.php b/system/libraries/Profiler.php
new file mode 100644
index 00000000..5531f336
--- /dev/null
+++ b/system/libraries/Profiler.php
@@ -0,0 +1,574 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Profiler Class
+ *
+ * This class enables you to display benchmark, query, and other data
+ * in order to help with debugging and optimization.
+ *
+ * Note: At some point it would be good to move all the HTML in this class
+ * into a set of template files in order to allow customization.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/general/profiling.html
+ */
+class CI_Profiler {
+
+	/**
+	 * List of profiler sections available to show
+	 *
+	 * @var array
+	 */
+	protected $_available_sections = array(
+		'benchmarks',
+		'get',
+		'memory_usage',
+		'post',
+		'uri_string',
+		'controller_info',
+		'queries',
+		'http_headers',
+		'session_data',
+		'config'
+	);
+
+	/**
+	 * Number of queries to show before making the additional queries togglable
+	 *
+	 * @var int
+	 */
+	protected $_query_toggle_count = 25;
+
+	/**
+	 * Reference to the CodeIgniter singleton
+	 *
+	 * @var object
+	 */
+	protected $CI;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Initialize Profiler
+	 *
+	 * @param	array	$config	Parameters
+	 */
+	public function __construct($config = array())
+	{
+		$this->CI =& get_instance();
+		$this->CI->load->language('profiler');
+
+		// default all sections to display
+		foreach ($this->_available_sections as $section)
+		{
+			if ( ! isset($config[$section]))
+			{
+				$this->{'_compile_'.$section} = TRUE;
+			}
+		}
+
+		$this->set_sections($config);
+		log_message('info', 'Profiler Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Sections
+	 *
+	 * Sets the private _compile_* properties to enable/disable Profiler sections
+	 *
+	 * @param	mixed	$config
+	 * @return	void
+	 */
+	public function set_sections($config)
+	{
+		if (isset($config['query_toggle_count']))
+		{
+			$this->_query_toggle_count = (int) $config['query_toggle_count'];
+			unset($config['query_toggle_count']);
+		}
+
+		foreach ($config as $method => $enable)
+		{
+			if (in_array($method, $this->_available_sections))
+			{
+				$this->{'_compile_'.$method} = ($enable !== FALSE);
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Auto Profiler
+	 *
+	 * This function cycles through the entire array of mark points and
+	 * matches any two points that are named identically (ending in "_start"
+	 * and "_end" respectively).  It then compiles the execution times for
+	 * all points and returns it as an array
+	 *
+	 * @return	array
+	 */
+	protected function _compile_benchmarks()
+	{
+		$profile = array();
+		foreach ($this->CI->benchmark->marker as $key => $val)
+		{
+			// We match the "end" marker so that the list ends
+			// up in the order that it was defined
+			if (preg_match('/(.+?)_end$/i', $key, $match)
+				&& isset($this->CI->benchmark->marker[$match[1].'_end'], $this->CI->benchmark->marker[$match[1].'_start']))
+			{
+				$profile[$match[1]] = $this->CI->benchmark->elapsed_time($match[1].'_start', $key);
+			}
+		}
+
+		// Build a table containing the profile data.
+		// Note: At some point we should turn this into a template that can
+		// be modified. We also might want to make this data available to be logged
+
+		$output = "\n\n"
+			.'<fieldset id="ci_profiler_benchmarks" style="border:1px solid #900;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#900;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_benchmarks')."&nbsp;&nbsp;</legend>"
+			."\n\n\n<table style=\"width:100%;\">\n";
+
+		foreach ($profile as $key => $val)
+		{
+			$key = ucwords(str_replace(array('_', '-'), ' ', $key));
+			$output .= '<tr><td style="padding:5px;width:50%;color:#000;font-weight:bold;background-color:#ddd;">'
+					.$key.'&nbsp;&nbsp;</td><td style="padding:5px;width:50%;color:#900;font-weight:normal;background-color:#ddd;">'
+					.$val."</td></tr>\n";
+		}
+
+		return $output."</table>\n</fieldset>";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile Queries
+	 *
+	 * @return	string
+	 */
+	protected function _compile_queries()
+	{
+		$dbs = array();
+
+		// Let's determine which databases are currently connected to
+		foreach (get_object_vars($this->CI) as $name => $cobject)
+		{
+			if (is_object($cobject))
+			{
+				if ($cobject instanceof CI_DB)
+				{
+					$dbs[get_class($this->CI).':$'.$name] = $cobject;
+				}
+				elseif ($cobject instanceof CI_Model)
+				{
+					foreach (get_object_vars($cobject) as $mname => $mobject)
+					{
+						if ($mobject instanceof CI_DB)
+						{
+							$dbs[get_class($cobject).':$'.$mname] = $mobject;
+						}
+					}
+				}
+			}
+		}
+
+		if (count($dbs) === 0)
+		{
+			return "\n\n"
+				.'<fieldset id="ci_profiler_queries" style="border:1px solid #0000FF;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+				."\n"
+				.'<legend style="color:#0000FF;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_queries').'&nbsp;&nbsp;</legend>'
+				."\n\n\n<table style=\"border:none; width:100%;\">\n"
+				.'<tr><td style="width:100%;color:#0000FF;font-weight:normal;background-color:#eee;padding:5px;">'
+				.$this->CI->lang->line('profiler_no_db')
+				."</td></tr>\n</table>\n</fieldset>";
+		}
+
+		// Load the text helper so we can highlight the SQL
+		$this->CI->load->helper('text');
+
+		// Key words we want bolded
+		$highlight = array('SELECT', 'DISTINCT', 'FROM', 'WHERE', 'AND', 'LEFT&nbsp;JOIN', 'ORDER&nbsp;BY', 'GROUP&nbsp;BY', 'LIMIT', 'INSERT', 'INTO', 'VALUES', 'UPDATE', 'OR&nbsp;', 'HAVING', 'OFFSET', 'NOT&nbsp;IN', 'IN', 'LIKE', 'NOT&nbsp;LIKE', 'COUNT', 'MAX', 'MIN', 'ON', 'AS', 'AVG', 'SUM', '(', ')');
+
+		$output  = "\n\n";
+		$count = 0;
+
+		foreach ($dbs as $name => $db)
+		{
+			$hide_queries = (count($db->queries) > $this->_query_toggle_count) ? ' display:none' : '';
+			$total_time = number_format(array_sum($db->query_times), 4).' '.$this->CI->lang->line('profiler_seconds');
+
+			$show_hide_js = '(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_queries_db_'.$count.'\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_hide').'\'?\''.$this->CI->lang->line('profiler_section_show').'\':\''.$this->CI->lang->line('profiler_section_hide').'\';">'.$this->CI->lang->line('profiler_section_hide').'</span>)';
+
+			if ($hide_queries !== '')
+			{
+				$show_hide_js = '(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_queries_db_'.$count.'\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show').'</span>)';
+			}
+
+			$output .= '<fieldset style="border:1px solid #0000FF;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+				."\n"
+				.'<legend style="color:#0000FF;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_database')
+				.':&nbsp; '.$db->database.' ('.$name.')&nbsp;&nbsp;&nbsp;'.$this->CI->lang->line('profiler_queries')
+				.': '.count($db->queries).' ('.$total_time.')&nbsp;&nbsp;'.$show_hide_js."</legend>\n\n\n"
+				.'<table style="width:100%;'.$hide_queries.'" id="ci_profiler_queries_db_'.$count."\">\n";
+
+			if (count($db->queries) === 0)
+			{
+				$output .= '<tr><td style="width:100%;color:#0000FF;font-weight:normal;background-color:#eee;padding:5px;">'
+						.$this->CI->lang->line('profiler_no_queries')."</td></tr>\n";
+			}
+			else
+			{
+				foreach ($db->queries as $key => $val)
+				{
+					$time = number_format($db->query_times[$key], 4);
+					$val = highlight_code($val);
+
+					foreach ($highlight as $bold)
+					{
+						$val = str_replace($bold, '<strong>'.$bold.'</strong>', $val);
+					}
+
+					$output .= '<tr><td style="padding:5px;vertical-align:top;width:1%;color:#900;font-weight:normal;background-color:#ddd;">'
+							.$time.'&nbsp;&nbsp;</td><td style="padding:5px;color:#000;font-weight:normal;background-color:#ddd;">'
+							.$val."</td></tr>\n";
+				}
+			}
+
+			$output .= "</table>\n</fieldset>";
+			$count++;
+		}
+
+		return $output;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile $_GET Data
+	 *
+	 * @return	string
+	 */
+	protected function _compile_get()
+	{
+		$output = "\n\n"
+			.'<fieldset id="ci_profiler_get" style="border:1px solid #cd6e00;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#cd6e00;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_get_data')."&nbsp;&nbsp;</legend>\n";
+
+		if (count($_GET) === 0)
+		{
+			$output .= '<div style="color:#cd6e00;font-weight:normal;padding:4px 0 4px 0;">'.$this->CI->lang->line('profiler_no_get').'</div>';
+		}
+		else
+		{
+			$output .= "\n\n<table style=\"width:100%;border:none;\">\n";
+
+			foreach ($_GET as $key => $val)
+			{
+				is_int($key) OR $key = "'".htmlspecialchars($key, ENT_QUOTES, config_item('charset'))."'";
+				$val = (is_array($val) OR is_object($val))
+					? '<pre>'.htmlspecialchars(print_r($val, TRUE), ENT_QUOTES, config_item('charset')).'</pre>'
+					: htmlspecialchars($val, ENT_QUOTES, config_item('charset'));
+
+				$output .= '<tr><td style="width:50%;color:#000;background-color:#ddd;padding:5px;">&#36;_GET['
+					.$key.']&nbsp;&nbsp; </td><td style="width:50%;padding:5px;color:#cd6e00;font-weight:normal;background-color:#ddd;">'
+					.$val."</td></tr>\n";
+			}
+
+			$output .= "</table>\n";
+		}
+
+		return $output.'</fieldset>';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile $_POST Data
+	 *
+	 * @return	string
+	 */
+	protected function _compile_post()
+	{
+		$output = "\n\n"
+			.'<fieldset id="ci_profiler_post" style="border:1px solid #009900;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#009900;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_post_data')."&nbsp;&nbsp;</legend>\n";
+
+		if (count($_POST) === 0 && count($_FILES) === 0)
+		{
+			$output .= '<div style="color:#009900;font-weight:normal;padding:4px 0 4px 0;">'.$this->CI->lang->line('profiler_no_post').'</div>';
+		}
+		else
+		{
+			$output .= "\n\n<table style=\"width:100%;\">\n";
+
+			foreach ($_POST as $key => $val)
+			{
+				is_int($key) OR $key = "'".htmlspecialchars($key, ENT_QUOTES, config_item('charset'))."'";
+				$val = (is_array($val) OR is_object($val))
+					? '<pre>'.htmlspecialchars(print_r($val, TRUE), ENT_QUOTES, config_item('charset')).'</pre>'
+					: htmlspecialchars($val, ENT_QUOTES, config_item('charset'));
+
+				$output .= '<tr><td style="width:50%;padding:5px;color:#000;background-color:#ddd;">&#36;_POST['
+					.$key.']&nbsp;&nbsp; </td><td style="width:50%;padding:5px;color:#009900;font-weight:normal;background-color:#ddd;">'
+					.$val."</td></tr>\n";
+			}
+
+			foreach ($_FILES as $key => $val)
+			{
+				is_int($key) OR $key = "'".htmlspecialchars($key, ENT_QUOTES, config_item('charset'))."'";
+				$val = (is_array($val) OR is_object($val))
+					? '<pre>'.htmlspecialchars(print_r($val, TRUE), ENT_QUOTES, config_item('charset')).'</pre>'
+					: htmlspecialchars($val, ENT_QUOTES, config_item('charset'));
+
+				$output .= '<tr><td style="width:50%;padding:5px;color:#000;background-color:#ddd;">&#36;_FILES['
+					.$key.']&nbsp;&nbsp; </td><td style="width:50%;padding:5px;color:#009900;font-weight:normal;background-color:#ddd;">'
+					.$val."</td></tr>\n";
+			}
+
+			$output .= "</table>\n";
+		}
+
+		return $output.'</fieldset>';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show query string
+	 *
+	 * @return	string
+	 */
+	protected function _compile_uri_string()
+	{
+		return "\n\n"
+			.'<fieldset id="ci_profiler_uri_string" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_uri_string')."&nbsp;&nbsp;</legend>\n"
+			.'<div style="color:#000;font-weight:normal;padding:4px 0 4px 0;">'
+			.($this->CI->uri->uri_string === '' ? $this->CI->lang->line('profiler_no_uri') : $this->CI->uri->uri_string)
+			.'</div></fieldset>';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show the controller and function that were called
+	 *
+	 * @return	string
+	 */
+	protected function _compile_controller_info()
+	{
+		return "\n\n"
+			.'<fieldset id="ci_profiler_controller_info" style="border:1px solid #995300;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#995300;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_controller_info')."&nbsp;&nbsp;</legend>\n"
+			.'<div style="color:#995300;font-weight:normal;padding:4px 0 4px 0;">'.$this->CI->router->class.'/'.$this->CI->router->method
+			.'</div></fieldset>';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile memory usage
+	 *
+	 * Display total used memory
+	 *
+	 * @return	string
+	 */
+	protected function _compile_memory_usage()
+	{
+		return "\n\n"
+			.'<fieldset id="ci_profiler_memory_usage" style="border:1px solid #5a0099;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#5a0099;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_memory_usage')."&nbsp;&nbsp;</legend>\n"
+			.'<div style="color:#5a0099;font-weight:normal;padding:4px 0 4px 0;">'
+			.(($usage = memory_get_usage()) != '' ? number_format($usage).' bytes' : $this->CI->lang->line('profiler_no_memory'))
+			.'</div></fieldset>';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile header information
+	 *
+	 * Lists HTTP headers
+	 *
+	 * @return	string
+	 */
+	protected function _compile_http_headers()
+	{
+		$output = "\n\n"
+			.'<fieldset id="ci_profiler_http_headers" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_headers')
+			.'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_httpheaders_table\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show')."</span>)</legend>\n\n\n"
+			.'<table style="width:100%;display:none;" id="ci_profiler_httpheaders_table">'."\n";
+
+		foreach (array('HTTP_ACCEPT', 'HTTP_USER_AGENT', 'HTTP_CONNECTION', 'SERVER_PORT', 'SERVER_NAME', 'REMOTE_ADDR', 'SERVER_SOFTWARE', 'HTTP_ACCEPT_LANGUAGE', 'SCRIPT_NAME', 'REQUEST_METHOD',' HTTP_HOST', 'REMOTE_HOST', 'CONTENT_TYPE', 'SERVER_PROTOCOL', 'QUERY_STRING', 'HTTP_ACCEPT_ENCODING', 'HTTP_X_FORWARDED_FOR', 'HTTP_DNT') as $header)
+		{
+			$val = isset($_SERVER[$header]) ? htmlspecialchars($_SERVER[$header], ENT_QUOTES, config_item('charset')) : '';
+			$output .= '<tr><td style="vertical-align:top;width:50%;padding:5px;color:#900;background-color:#ddd;">'
+				.$header.'&nbsp;&nbsp;</td><td style="width:50%;padding:5px;color:#000;background-color:#ddd;">'.$val."</td></tr>\n";
+		}
+
+		return $output."</table>\n</fieldset>";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile config information
+	 *
+	 * Lists developer config variables
+	 *
+	 * @return	string
+	 */
+	protected function _compile_config()
+	{
+		$output = "\n\n"
+			.'<fieldset id="ci_profiler_config" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_config').'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_config_table\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show')."</span>)</legend>\n\n\n"
+			.'<table style="width:100%;display:none;" id="ci_profiler_config_table">'."\n";
+
+		foreach ($this->CI->config->config as $config => $val)
+		{
+			$pre       = '';
+			$pre_close = '';
+
+			if (is_array($val) OR is_object($val))
+			{
+				$val = print_r($val, TRUE);
+
+				$pre       = '<pre>' ;
+				$pre_close = '</pre>';
+			}
+
+			$output .= '<tr><td style="padding:5px;vertical-align:top;color:#900;background-color:#ddd;">'
+				.$config.'&nbsp;&nbsp;</td><td style="padding:5px;color:#000;background-color:#ddd;">'.$pre.htmlspecialchars($val, ENT_QUOTES, config_item('charset')).$pre_close."</td></tr>\n";
+		}
+
+		return $output."</table>\n</fieldset>";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile session userdata
+	 *
+	 * @return 	string
+	 */
+	protected function _compile_session_data()
+	{
+		if ( ! isset($this->CI->session))
+		{
+			return;
+		}
+
+		$output = '<fieldset id="ci_profiler_csession" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			.'<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_session_data').'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_session_data\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show').'</span>)</legend>'
+			.'<table style="width:100%;display:none;" id="ci_profiler_session_data">';
+
+		foreach ($this->CI->session->userdata() as $key => $val)
+		{
+			$pre       = '';
+			$pre_close = '';
+
+			if (is_array($val) OR is_object($val))
+			{
+				$val = print_r($val, TRUE);
+
+				$pre       = '<pre>' ;
+				$pre_close = '</pre>';
+			}
+
+			$output .= '<tr><td style="padding:5px;vertical-align:top;color:#900;background-color:#ddd;">'
+				.$key.'&nbsp;&nbsp;</td><td style="padding:5px;color:#000;background-color:#ddd;">'.$pre.htmlspecialchars($val, ENT_QUOTES, config_item('charset')).$pre_close."</td></tr>\n";
+		}
+
+		return $output."</table>\n</fieldset>";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Run the Profiler
+	 *
+	 * @return	string
+	 */
+	public function run()
+	{
+		$output = '<div id="codeigniter_profiler" style="clear:both;background-color:#fff;padding:10px;">';
+		$fields_displayed = 0;
+
+		foreach ($this->_available_sections as $section)
+		{
+			if ($this->{'_compile_'.$section} !== FALSE)
+			{
+				$func = '_compile_'.$section;
+				$output .= $this->{$func}();
+				$fields_displayed++;
+			}
+		}
+
+		if ($fields_displayed === 0)
+		{
+			$output .= '<p style="border:1px solid #5a0099;padding:10px;margin:20px 0;background-color:#eee;">'
+				.$this->CI->lang->line('profiler_no_profiles').'</p>';
+		}
+
+		return $output.'</div>';
+	}
+
+}
diff --git a/system/libraries/Session/Session.php b/system/libraries/Session/Session.php
new file mode 100644
index 00000000..157a1d57
--- /dev/null
+++ b/system/libraries/Session/Session.php
@@ -0,0 +1,962 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Session Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Sessions
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/libraries/sessions.html
+ */
+class CI_Session {
+
+	/**
+	 * Userdata array
+	 *
+	 * Just a reference to $_SESSION, for BC purposes.
+	 */
+	public $userdata;
+
+	protected $_driver = 'files';
+	protected $_config;
+	protected $_sid_regexp;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(array $params = array())
+	{
+		// No sessions under CLI
+		if (is_cli())
+		{
+			log_message('debug', 'Session: Initialization under CLI aborted.');
+			return;
+		}
+		elseif ((bool) ini_get('session.auto_start'))
+		{
+			log_message('error', 'Session: session.auto_start is enabled in php.ini. Aborting.');
+			return;
+		}
+		elseif ( ! empty($params['driver']))
+		{
+			$this->_driver = $params['driver'];
+			unset($params['driver']);
+		}
+		elseif ($driver = config_item('sess_driver'))
+		{
+			$this->_driver = $driver;
+		}
+		// Note: BC workaround
+		elseif (config_item('sess_use_database'))
+		{
+			log_message('debug', 'Session: "sess_driver" is empty; using BC fallback to "sess_use_database".');
+			$this->_driver = 'database';
+		}
+
+		$class = $this->_ci_load_classes($this->_driver);
+
+		// Configuration ...
+		$this->_configure($params);
+		$this->_config['_sid_regexp'] = $this->_sid_regexp;
+
+		$class = new $class($this->_config);
+		if ($class instanceof SessionHandlerInterface)
+		{
+			session_set_save_handler($class, TRUE);
+		}
+		else
+		{
+			log_message('error', "Session: Driver '".$this->_driver."' doesn't implement SessionHandlerInterface. Aborting.");
+			return;
+		}
+
+		// Sanitize the cookie, because apparently PHP doesn't do that for userspace handlers
+		if (isset($_COOKIE[$this->_config['cookie_name']])
+			&& (
+				! is_string($_COOKIE[$this->_config['cookie_name']])
+				OR ! preg_match('#\A'.$this->_sid_regexp.'\z#', $_COOKIE[$this->_config['cookie_name']])
+			)
+		)
+		{
+			unset($_COOKIE[$this->_config['cookie_name']]);
+		}
+
+		session_start();
+
+		// Is session ID auto-regeneration configured? (ignoring ajax requests)
+		if ((empty($_SERVER['HTTP_X_REQUESTED_WITH']) OR strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) !== 'xmlhttprequest')
+			&& ($regenerate_time = config_item('sess_time_to_update')) > 0
+		)
+		{
+			if ( ! isset($_SESSION['__ci_last_regenerate']))
+			{
+				$_SESSION['__ci_last_regenerate'] = time();
+			}
+			elseif ($_SESSION['__ci_last_regenerate'] < (time() - $regenerate_time))
+			{
+				$this->sess_regenerate((bool) config_item('sess_regenerate_destroy'));
+			}
+		}
+		// Another work-around ... PHP doesn't seem to send the session cookie
+		// unless it is being currently created or regenerated
+		elseif (isset($_COOKIE[$this->_config['cookie_name']]) && $_COOKIE[$this->_config['cookie_name']] === session_id())
+		{
+			setcookie(
+				$this->_config['cookie_name'],
+				session_id(),
+				(empty($this->_config['cookie_lifetime']) ? 0 : time() + $this->_config['cookie_lifetime']),
+				$this->_config['cookie_path'],
+				$this->_config['cookie_domain'],
+				$this->_config['cookie_secure'],
+				TRUE
+			);
+		}
+
+		$this->_ci_init_vars();
+
+		log_message('info', "Session: Class initialized using '".$this->_driver."' driver.");
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * CI Load Classes
+	 *
+	 * An internal method to load all possible dependency and extension
+	 * classes. It kind of emulates the CI_Driver library, but is
+	 * self-sufficient.
+	 *
+	 * @param	string	$driver	Driver name
+	 * @return	string	Driver class name
+	 */
+	protected function _ci_load_classes($driver)
+	{
+		$prefix = config_item('subclass_prefix');
+
+		if ( ! class_exists('CI_Session_driver', FALSE))
+		{
+			require_once(
+				file_exists(APPPATH.'libraries/Session/Session_driver.php')
+					? APPPATH.'libraries/Session/Session_driver.php'
+					: BASEPATH.'libraries/Session/Session_driver.php'
+			);
+
+			if (file_exists($file_path = APPPATH.'libraries/Session/'.$prefix.'Session_driver.php'))
+			{
+				require_once($file_path);
+			}
+		}
+
+		$class = 'Session_'.$driver.'_driver';
+
+		// Allow custom drivers without the CI_ or MY_ prefix
+		if ( ! class_exists($class, FALSE) && file_exists($file_path = APPPATH.'libraries/Session/drivers/'.$class.'.php'))
+		{
+			require_once($file_path);
+			if (class_exists($class, FALSE))
+			{
+				return $class;
+			}
+		}
+
+		if ( ! class_exists('CI_'.$class, FALSE))
+		{
+			if (file_exists($file_path = APPPATH.'libraries/Session/drivers/'.$class.'.php') OR file_exists($file_path = BASEPATH.'libraries/Session/drivers/'.$class.'.php'))
+			{
+				require_once($file_path);
+			}
+
+			if ( ! class_exists('CI_'.$class, FALSE) && ! class_exists($class, FALSE))
+			{
+				throw new UnexpectedValueException("Session: Configured driver '".$driver."' was not found. Aborting.");
+			}
+		}
+
+		if ( ! class_exists($prefix.$class, FALSE) && file_exists($file_path = APPPATH.'libraries/Session/drivers/'.$prefix.$class.'.php'))
+		{
+			require_once($file_path);
+			if (class_exists($prefix.$class, FALSE))
+			{
+				return $prefix.$class;
+			}
+
+			log_message('debug', 'Session: '.$prefix.$class.".php found but it doesn't declare class ".$prefix.$class.'.');
+		}
+
+		return 'CI_'.$class;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Configuration
+	 *
+	 * Handle input parameters and configuration defaults
+	 *
+	 * @param	array	&$params	Input parameters
+	 * @return	void
+	 */
+	protected function _configure(&$params)
+	{
+		$expiration = config_item('sess_expiration');
+
+		if (isset($params['cookie_lifetime']))
+		{
+			$params['cookie_lifetime'] = (int) $params['cookie_lifetime'];
+		}
+		else
+		{
+			$params['cookie_lifetime'] = ( ! isset($expiration) && config_item('sess_expire_on_close'))
+				? 0 : (int) $expiration;
+		}
+
+		isset($params['cookie_name']) OR $params['cookie_name'] = config_item('sess_cookie_name');
+		if (empty($params['cookie_name']))
+		{
+			$params['cookie_name'] = ini_get('session.name');
+		}
+		else
+		{
+			ini_set('session.name', $params['cookie_name']);
+		}
+
+		isset($params['cookie_path']) OR $params['cookie_path'] = config_item('cookie_path');
+		isset($params['cookie_domain']) OR $params['cookie_domain'] = config_item('cookie_domain');
+		isset($params['cookie_secure']) OR $params['cookie_secure'] = (bool) config_item('cookie_secure');
+
+		session_set_cookie_params(
+			$params['cookie_lifetime'],
+			$params['cookie_path'],
+			$params['cookie_domain'],
+			$params['cookie_secure'],
+			TRUE // HttpOnly; Yes, this is intentional and not configurable for security reasons
+		);
+
+		if (empty($expiration))
+		{
+			$params['expiration'] = (int) ini_get('session.gc_maxlifetime');
+		}
+		else
+		{
+			$params['expiration'] = (int) $expiration;
+			ini_set('session.gc_maxlifetime', $expiration);
+		}
+
+		$params['match_ip'] = (bool) (isset($params['match_ip']) ? $params['match_ip'] : config_item('sess_match_ip'));
+
+		isset($params['save_path']) OR $params['save_path'] = config_item('sess_save_path');
+
+		$this->_config = $params;
+
+		// Security is king
+		ini_set('session.use_trans_sid', 0);
+		ini_set('session.use_strict_mode', 1);
+		ini_set('session.use_cookies', 1);
+		ini_set('session.use_only_cookies', 1);
+
+		$this->_configure_sid_length();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Configure session ID length
+	 *
+	 * To make life easier, we used to force SHA-1 and 4 bits per
+	 * character on everyone. And of course, someone was unhappy.
+	 *
+	 * Then PHP 7.1 broke backwards-compatibility because ext/session
+	 * is such a mess that nobody wants to touch it with a pole stick,
+	 * and the one guy who does, nobody has the energy to argue with.
+	 *
+	 * So we were forced to make changes, and OF COURSE something was
+	 * going to break and now we have this pile of shit. -- Narf
+	 *
+	 * @return	void
+	 */
+	protected function _configure_sid_length()
+	{
+		if (PHP_VERSION_ID < 70100)
+		{
+			$hash_function = ini_get('session.hash_function');
+			if (ctype_digit($hash_function))
+			{
+				if ($hash_function !== '1')
+				{
+					ini_set('session.hash_function', 1);
+				}
+
+				$bits = 160;
+			}
+			elseif ( ! in_array($hash_function, hash_algos(), TRUE))
+			{
+				ini_set('session.hash_function', 1);
+				$bits = 160;
+			}
+			elseif (($bits = strlen(hash($hash_function, 'dummy', false)) * 4) < 160)
+			{
+				ini_set('session.hash_function', 1);
+				$bits = 160;
+			}
+
+			$bits_per_character = (int) ini_get('session.hash_bits_per_character');
+			$sid_length         = (int) ceil($bits / $bits_per_character);
+		}
+		else
+		{
+			$bits_per_character = (int) ini_get('session.sid_bits_per_character');
+			$sid_length         = (int) ini_get('session.sid_length');
+			if (($bits = $sid_length * $bits_per_character) < 160)
+			{
+				// Add as many more characters as necessary to reach at least 160 bits
+				$sid_length += (int) ceil((160 % $bits) / $bits_per_character);
+				ini_set('session.sid_length', $sid_length);
+			}
+		}
+
+		// Yes, 4,5,6 are the only known possible values as of 2016-10-27
+		switch ($bits_per_character)
+		{
+			case 4:
+				$this->_sid_regexp = '[0-9a-f]';
+				break;
+			case 5:
+				$this->_sid_regexp = '[0-9a-v]';
+				break;
+			case 6:
+				$this->_sid_regexp = '[0-9a-zA-Z,-]';
+				break;
+		}
+
+		$this->_sid_regexp .= '{'.$sid_length.'}';
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Handle temporary variables
+	 *
+	 * Clears old "flash" data, marks the new one for deletion and handles
+	 * "temp" data deletion.
+	 *
+	 * @return	void
+	 */
+	protected function _ci_init_vars()
+	{
+		if ( ! empty($_SESSION['__ci_vars']))
+		{
+			$current_time = time();
+
+			foreach ($_SESSION['__ci_vars'] as $key => &$value)
+			{
+				if ($value === 'new')
+				{
+					$_SESSION['__ci_vars'][$key] = 'old';
+				}
+				elseif ($value === 'old' || $value < $current_time)
+				{
+					unset($_SESSION[$key], $_SESSION['__ci_vars'][$key]);
+				}
+			}
+
+			if (empty($_SESSION['__ci_vars']))
+			{
+				unset($_SESSION['__ci_vars']);
+			}
+		}
+
+		$this->userdata =& $_SESSION;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Mark as flash
+	 *
+	 * @param	mixed	$key	Session data key(s)
+	 * @return	bool
+	 */
+	public function mark_as_flash($key)
+	{
+		if (is_array($key))
+		{
+			for ($i = 0, $c = count($key); $i < $c; $i++)
+			{
+				if ( ! isset($_SESSION[$key[$i]]))
+				{
+					return FALSE;
+				}
+			}
+
+			$new = array_fill_keys($key, 'new');
+
+			$_SESSION['__ci_vars'] = isset($_SESSION['__ci_vars'])
+				? array_merge($_SESSION['__ci_vars'], $new)
+				: $new;
+
+			return TRUE;
+		}
+
+		if ( ! isset($_SESSION[$key]))
+		{
+			return FALSE;
+		}
+
+		$_SESSION['__ci_vars'][$key] = 'new';
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get flash keys
+	 *
+	 * @return	array
+	 */
+	public function get_flash_keys()
+	{
+		if ( ! isset($_SESSION['__ci_vars']))
+		{
+			return array();
+		}
+
+		$keys = array();
+		foreach (array_keys($_SESSION['__ci_vars']) as $key)
+		{
+			is_int($_SESSION['__ci_vars'][$key]) OR $keys[] = $key;
+		}
+
+		return $keys;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Unmark flash
+	 *
+	 * @param	mixed	$key	Session data key(s)
+	 * @return	void
+	 */
+	public function unmark_flash($key)
+	{
+		if (empty($_SESSION['__ci_vars']))
+		{
+			return;
+		}
+
+		is_array($key) OR $key = array($key);
+
+		foreach ($key as $k)
+		{
+			if (isset($_SESSION['__ci_vars'][$k]) && ! is_int($_SESSION['__ci_vars'][$k]))
+			{
+				unset($_SESSION['__ci_vars'][$k]);
+			}
+		}
+
+		if (empty($_SESSION['__ci_vars']))
+		{
+			unset($_SESSION['__ci_vars']);
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Mark as temp
+	 *
+	 * @param	mixed	$key	Session data key(s)
+	 * @param	int	$ttl	Time-to-live in seconds
+	 * @return	bool
+	 */
+	public function mark_as_temp($key, $ttl = 300)
+	{
+		$ttl += time();
+
+		if (is_array($key))
+		{
+			$temp = array();
+
+			foreach ($key as $k => $v)
+			{
+				// Do we have a key => ttl pair, or just a key?
+				if (is_int($k))
+				{
+					$k = $v;
+					$v = $ttl;
+				}
+				else
+				{
+					$v += time();
+				}
+
+				if ( ! isset($_SESSION[$k]))
+				{
+					return FALSE;
+				}
+
+				$temp[$k] = $v;
+			}
+
+			$_SESSION['__ci_vars'] = isset($_SESSION['__ci_vars'])
+				? array_merge($_SESSION['__ci_vars'], $temp)
+				: $temp;
+
+			return TRUE;
+		}
+
+		if ( ! isset($_SESSION[$key]))
+		{
+			return FALSE;
+		}
+
+		$_SESSION['__ci_vars'][$key] = $ttl;
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get temp keys
+	 *
+	 * @return	array
+	 */
+	public function get_temp_keys()
+	{
+		if ( ! isset($_SESSION['__ci_vars']))
+		{
+			return array();
+		}
+
+		$keys = array();
+		foreach (array_keys($_SESSION['__ci_vars']) as $key)
+		{
+			is_int($_SESSION['__ci_vars'][$key]) && $keys[] = $key;
+		}
+
+		return $keys;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Unmark temp
+	 *
+	 * @param	mixed	$key	Session data key(s)
+	 * @return	void
+	 */
+	public function unmark_temp($key)
+	{
+		if (empty($_SESSION['__ci_vars']))
+		{
+			return;
+		}
+
+		is_array($key) OR $key = array($key);
+
+		foreach ($key as $k)
+		{
+			if (isset($_SESSION['__ci_vars'][$k]) && is_int($_SESSION['__ci_vars'][$k]))
+			{
+				unset($_SESSION['__ci_vars'][$k]);
+			}
+		}
+
+		if (empty($_SESSION['__ci_vars']))
+		{
+			unset($_SESSION['__ci_vars']);
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * __get()
+	 *
+	 * @param	string	$key	'session_id' or a session data key
+	 * @return	mixed
+	 */
+	public function __get($key)
+	{
+		// Note: Keep this order the same, just in case somebody wants to
+		//       use 'session_id' as a session data key, for whatever reason
+		if (isset($_SESSION[$key]))
+		{
+			return $_SESSION[$key];
+		}
+		elseif ($key === 'session_id')
+		{
+			return session_id();
+		}
+
+		return NULL;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * __isset()
+	 *
+	 * @param	string	$key	'session_id' or a session data key
+	 * @return	bool
+	 */
+	public function __isset($key)
+	{
+		if ($key === 'session_id')
+		{
+			return (session_status() === PHP_SESSION_ACTIVE);
+		}
+
+		return isset($_SESSION[$key]);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * __set()
+	 *
+	 * @param	string	$key	Session data key
+	 * @param	mixed	$value	Session data value
+	 * @return	void
+	 */
+	public function __set($key, $value)
+	{
+		$_SESSION[$key] = $value;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Session destroy
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @return	void
+	 */
+	public function sess_destroy()
+	{
+		session_destroy();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Session regenerate
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	bool	$destroy	Destroy old session data flag
+	 * @return	void
+	 */
+	public function sess_regenerate($destroy = FALSE)
+	{
+		$_SESSION['__ci_last_regenerate'] = time();
+		session_regenerate_id($destroy);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get userdata reference
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @return	array
+	 */
+	public function &get_userdata()
+	{
+		return $_SESSION;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Userdata (fetch)
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	string	$key	Session data key
+	 * @return	mixed	Session data value or NULL if not found
+	 */
+	public function userdata($key = NULL)
+	{
+		if (isset($key))
+		{
+			return isset($_SESSION[$key]) ? $_SESSION[$key] : NULL;
+		}
+		elseif (empty($_SESSION))
+		{
+			return array();
+		}
+
+		$userdata = array();
+		$_exclude = array_merge(
+			array('__ci_vars'),
+			$this->get_flash_keys(),
+			$this->get_temp_keys()
+		);
+
+		foreach (array_keys($_SESSION) as $key)
+		{
+			if ( ! in_array($key, $_exclude, TRUE))
+			{
+				$userdata[$key] = $_SESSION[$key];
+			}
+		}
+
+		return $userdata;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Set userdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	mixed	$data	Session data key or an associative array
+	 * @param	mixed	$value	Value to store
+	 * @return	void
+	 */
+	public function set_userdata($data, $value = NULL)
+	{
+		if (is_array($data))
+		{
+			foreach ($data as $key => &$value)
+			{
+				$_SESSION[$key] = $value;
+			}
+
+			return;
+		}
+
+		$_SESSION[$data] = $value;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Unset userdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	mixed	$key	Session data key(s)
+	 * @return	void
+	 */
+	public function unset_userdata($key)
+	{
+		if (is_array($key))
+		{
+			foreach ($key as $k)
+			{
+				unset($_SESSION[$k]);
+			}
+
+			return;
+		}
+
+		unset($_SESSION[$key]);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * All userdata (fetch)
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @return	array	$_SESSION, excluding flash data items
+	 */
+	public function all_userdata()
+	{
+		return $this->userdata();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Has userdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	string	$key	Session data key
+	 * @return	bool
+	 */
+	public function has_userdata($key)
+	{
+		return isset($_SESSION[$key]);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Flashdata (fetch)
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	string	$key	Session data key
+	 * @return	mixed	Session data value or NULL if not found
+	 */
+	public function flashdata($key = NULL)
+	{
+		if (isset($key))
+		{
+			return (isset($_SESSION['__ci_vars'], $_SESSION['__ci_vars'][$key], $_SESSION[$key]) && ! is_int($_SESSION['__ci_vars'][$key]))
+				? $_SESSION[$key]
+				: NULL;
+		}
+
+		$flashdata = array();
+
+		if ( ! empty($_SESSION['__ci_vars']))
+		{
+			foreach ($_SESSION['__ci_vars'] as $key => &$value)
+			{
+				is_int($value) OR $flashdata[$key] = $_SESSION[$key];
+			}
+		}
+
+		return $flashdata;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Set flashdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	mixed	$data	Session data key or an associative array
+	 * @param	mixed	$value	Value to store
+	 * @return	void
+	 */
+	public function set_flashdata($data, $value = NULL)
+	{
+		$this->set_userdata($data, $value);
+		$this->mark_as_flash(is_array($data) ? array_keys($data) : $data);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Keep flashdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	mixed	$key	Session data key(s)
+	 * @return	void
+	 */
+	public function keep_flashdata($key)
+	{
+		$this->mark_as_flash($key);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Temp data (fetch)
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	string	$key	Session data key
+	 * @return	mixed	Session data value or NULL if not found
+	 */
+	public function tempdata($key = NULL)
+	{
+		if (isset($key))
+		{
+			return (isset($_SESSION['__ci_vars'], $_SESSION['__ci_vars'][$key], $_SESSION[$key]) && is_int($_SESSION['__ci_vars'][$key]))
+				? $_SESSION[$key]
+				: NULL;
+		}
+
+		$tempdata = array();
+
+		if ( ! empty($_SESSION['__ci_vars']))
+		{
+			foreach ($_SESSION['__ci_vars'] as $key => &$value)
+			{
+				is_int($value) && $tempdata[$key] = $_SESSION[$key];
+			}
+		}
+
+		return $tempdata;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Set tempdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	mixed	$data	Session data key or an associative array of items
+	 * @param	mixed	$value	Value to store
+	 * @param	int	$ttl	Time-to-live in seconds
+	 * @return	void
+	 */
+	public function set_tempdata($data, $value = NULL, $ttl = 300)
+	{
+		$this->set_userdata($data, $value);
+		$this->mark_as_temp(is_array($data) ? array_keys($data) : $data, $ttl);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Unset tempdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	mixed	$data	Session data key(s)
+	 * @return	void
+	 */
+	public function unset_tempdata($key)
+	{
+		$this->unmark_temp($key);
+	}
+
+}
diff --git a/system/libraries/Session/Session_driver.php b/system/libraries/Session/Session_driver.php
new file mode 100644
index 00000000..734b6e05
--- /dev/null
+++ b/system/libraries/Session/Session_driver.php
@@ -0,0 +1,187 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Session Driver Class
+ *
+ * @package	CodeIgniter
+ * @subpackage	Libraries
+ * @category	Sessions
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/libraries/sessions.html
+ */
+abstract class CI_Session_driver implements SessionHandlerInterface {
+
+	protected $_config;
+
+	/**
+	 * Data fingerprint
+	 *
+	 * @var	bool
+	 */
+	protected $_fingerprint;
+
+	/**
+	 * Lock placeholder
+	 *
+	 * @var	mixed
+	 */
+	protected $_lock = FALSE;
+
+	/**
+	 * Read session ID
+	 *
+	 * Used to detect session_regenerate_id() calls because PHP only calls
+	 * write() after regenerating the ID.
+	 *
+	 * @var	string
+	 */
+	protected $_session_id;
+
+	/**
+	 * Success and failure return values
+	 *
+	 * Necessary due to a bug in all PHP 5 versions where return values
+	 * from userspace handlers are not handled properly. PHP 7 fixes the
+	 * bug, so we need to return different values depending on the version.
+	 *
+	 * @see	https://wiki.php.net/rfc/session.user.return-value
+	 * @var	mixed
+	 */
+	protected $_success, $_failure;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(&$params)
+	{
+		$this->_config =& $params;
+
+		if (is_php('7'))
+		{
+			$this->_success = TRUE;
+			$this->_failure = FALSE;
+		}
+		else
+		{
+			$this->_success = 0;
+			$this->_failure = -1;
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * PHP 5.x validate ID
+	 *
+	 * Enforces session.use_strict_mode
+	 *
+	 * @return	void
+	 */
+	public function php5_validate_id()
+	{
+		if (isset($_COOKIE[$this->_config['cookie_name']]) && ! $this->validateSessionId($_COOKIE[$this->_config['cookie_name']]))
+		{
+			unset($_COOKIE[$this->_config['cookie_name']]);
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cookie destroy
+	 *
+	 * Internal method to force removal of a cookie by the client
+	 * when session_destroy() is called.
+	 *
+	 * @return	bool
+	 */
+	protected function _cookie_destroy()
+	{
+		return setcookie(
+			$this->_config['cookie_name'],
+			NULL,
+			1,
+			$this->_config['cookie_path'],
+			$this->_config['cookie_domain'],
+			$this->_config['cookie_secure'],
+			TRUE
+		);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get lock
+	 *
+	 * A dummy method allowing drivers with no locking functionality
+	 * (databases other than PostgreSQL and MySQL) to act as if they
+	 * do acquire a lock.
+	 *
+	 * @param	string	$session_id
+	 * @return	bool
+	 */
+	protected function _get_lock($session_id)
+	{
+		$this->_lock = TRUE;
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Release lock
+	 *
+	 * @return	bool
+	 */
+	protected function _release_lock()
+	{
+		if ($this->_lock)
+		{
+			$this->_lock = FALSE;
+		}
+
+		return TRUE;
+	}
+}
diff --git a/system/libraries/Session/drivers/Session_database_driver.php b/system/libraries/Session/drivers/Session_database_driver.php
new file mode 100644
index 00000000..a3055af5
--- /dev/null
+++ b/system/libraries/Session/drivers/Session_database_driver.php
@@ -0,0 +1,445 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Session Database Driver
+ *
+ * @package	CodeIgniter
+ * @subpackage	Libraries
+ * @category	Sessions
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/libraries/sessions.html
+ */
+class CI_Session_database_driver extends CI_Session_driver implements SessionHandlerInterface {
+
+	/**
+	 * DB object
+	 *
+	 * @var	object
+	 */
+	protected $_db;
+
+	/**
+	 * Row exists flag
+	 *
+	 * @var	bool
+	 */
+	protected $_row_exists = FALSE;
+
+	/**
+	 * Lock "driver" flag
+	 *
+	 * @var	string
+	 */
+	protected $_platform;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(&$params)
+	{
+		parent::__construct($params);
+
+		$CI =& get_instance();
+		isset($CI->db) OR $CI->load->database();
+		$this->_db = $CI->db;
+
+		if ( ! $this->_db instanceof CI_DB_query_builder)
+		{
+			throw new Exception('Query Builder not enabled for the configured database. Aborting.');
+		}
+		elseif ($this->_db->pconnect)
+		{
+			throw new Exception('Configured database connection is persistent. Aborting.');
+		}
+		elseif ($this->_db->cache_on)
+		{
+			throw new Exception('Configured database connection has cache enabled. Aborting.');
+		}
+
+		$db_driver = $this->_db->dbdriver.(empty($this->_db->subdriver) ? '' : '_'.$this->_db->subdriver);
+		if (strpos($db_driver, 'mysql') !== FALSE)
+		{
+			$this->_platform = 'mysql';
+		}
+		elseif (in_array($db_driver, array('postgre', 'pdo_pgsql'), TRUE))
+		{
+			$this->_platform = 'postgre';
+		}
+
+		// Note: BC work-around for the old 'sess_table_name' setting, should be removed in the future.
+		if ( ! isset($this->_config['save_path']) && ($this->_config['save_path'] = config_item('sess_table_name')))
+		{
+			log_message('debug', 'Session: "sess_save_path" is empty; using BC fallback to "sess_table_name".');
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Open
+	 *
+	 * Initializes the database connection
+	 *
+	 * @param	string	$save_path	Table name
+	 * @param	string	$name		Session cookie name, unused
+	 * @return	bool
+	 */
+	public function open($save_path, $name)
+	{
+		if (empty($this->_db->conn_id) && ! $this->_db->db_connect())
+		{
+			return $this->_failure;
+		}
+
+		$this->php5_validate_id();
+
+		return $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Read
+	 *
+	 * Reads session data and acquires a lock
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	string	Serialized session data
+	 */
+	public function read($session_id)
+	{
+		if ($this->_get_lock($session_id) === FALSE)
+		{
+			return $this->_failure;
+		}
+
+		// Prevent previous QB calls from messing with our queries
+		$this->_db->reset_query();
+
+		// Needed by write() to detect session_regenerate_id() calls
+		$this->_session_id = $session_id;
+
+		$this->_db
+			->select('data')
+			->from($this->_config['save_path'])
+			->where('id', $session_id);
+
+		if ($this->_config['match_ip'])
+		{
+			$this->_db->where('ip_address', $_SERVER['REMOTE_ADDR']);
+		}
+
+		if ( ! ($result = $this->_db->get()) OR ($result = $result->row()) === NULL)
+		{
+			// PHP7 will reuse the same SessionHandler object after
+			// ID regeneration, so we need to explicitly set this to
+			// FALSE instead of relying on the default ...
+			$this->_row_exists = FALSE;
+			$this->_fingerprint = md5('');
+			return '';
+		}
+
+		// PostgreSQL's variant of a BLOB datatype is Bytea, which is a
+		// PITA to work with, so we use base64-encoded data in a TEXT
+		// field instead.
+		$result = ($this->_platform === 'postgre')
+			? base64_decode(rtrim($result->data))
+			: $result->data;
+
+		$this->_fingerprint = md5($result);
+		$this->_row_exists = TRUE;
+		return $result;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Write
+	 *
+	 * Writes (create / update) session data
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @param	string	$session_data	Serialized session data
+	 * @return	bool
+	 */
+	public function write($session_id, $session_data)
+	{
+		// Prevent previous QB calls from messing with our queries
+		$this->_db->reset_query();
+
+		// Was the ID regenerated?
+		if (isset($this->_session_id) && $session_id !== $this->_session_id)
+		{
+			if ( ! $this->_release_lock() OR ! $this->_get_lock($session_id))
+			{
+				return $this->_failure;
+			}
+
+			$this->_row_exists = FALSE;
+			$this->_session_id = $session_id;
+		}
+		elseif ($this->_lock === FALSE)
+		{
+			return $this->_failure;
+		}
+
+		if ($this->_row_exists === FALSE)
+		{
+			$insert_data = array(
+				'id' => $session_id,
+				'ip_address' => $_SERVER['REMOTE_ADDR'],
+				'timestamp' => time(),
+				'data' => ($this->_platform === 'postgre' ? base64_encode($session_data) : $session_data)
+			);
+
+			if ($this->_db->insert($this->_config['save_path'], $insert_data))
+			{
+				$this->_fingerprint = md5($session_data);
+				$this->_row_exists = TRUE;
+				return $this->_success;
+			}
+
+			return $this->_failure;
+		}
+
+		$this->_db->where('id', $session_id);
+		if ($this->_config['match_ip'])
+		{
+			$this->_db->where('ip_address', $_SERVER['REMOTE_ADDR']);
+		}
+
+		$update_data = array('timestamp' => time());
+		if ($this->_fingerprint !== md5($session_data))
+		{
+			$update_data['data'] = ($this->_platform === 'postgre')
+				? base64_encode($session_data)
+				: $session_data;
+		}
+
+		if ($this->_db->update($this->_config['save_path'], $update_data))
+		{
+			$this->_fingerprint = md5($session_data);
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Close
+	 *
+	 * Releases locks
+	 *
+	 * @return	bool
+	 */
+	public function close()
+	{
+		return ($this->_lock && ! $this->_release_lock())
+			? $this->_failure
+			: $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Destroy
+	 *
+	 * Destroys the current session.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	public function destroy($session_id)
+	{
+		if ($this->_lock)
+		{
+			// Prevent previous QB calls from messing with our queries
+			$this->_db->reset_query();
+
+			$this->_db->where('id', $session_id);
+			if ($this->_config['match_ip'])
+			{
+				$this->_db->where('ip_address', $_SERVER['REMOTE_ADDR']);
+			}
+
+			if ( ! $this->_db->delete($this->_config['save_path']))
+			{
+				return $this->_failure;
+			}
+		}
+
+		if ($this->close() === $this->_success)
+		{
+			$this->_cookie_destroy();
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Garbage Collector
+	 *
+	 * Deletes expired sessions
+	 *
+	 * @param	int 	$maxlifetime	Maximum lifetime of sessions
+	 * @return	bool
+	 */
+	public function gc($maxlifetime)
+	{
+		// Prevent previous QB calls from messing with our queries
+		$this->_db->reset_query();
+
+		return ($this->_db->delete($this->_config['save_path'], 'timestamp < '.(time() - $maxlifetime)))
+			? $this->_success
+			: $this->_failure;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate ID
+	 *
+	 * Checks whether a session ID record exists server-side,
+	 * to enforce session.use_strict_mode.
+	 *
+	 * @param	string	$id
+	 * @return	bool
+	 */
+	public function validateSessionId($id)
+	{
+		// Prevent previous QB calls from messing with our queries
+		$this->_db->reset_query();
+
+		$this->_db->select('1')->from($this->_config['save_path'])->where('id', $id);
+		empty($this->_config['match_ip']) OR $this->_db->where('ip_address', $_SERVER['REMOTE_ADDR']);
+		$result = $this->_db->get();
+		empty($result) OR $result = $result->row();
+
+		return ! empty($result);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get lock
+	 *
+	 * Acquires a lock, depending on the underlying platform.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	protected function _get_lock($session_id)
+	{
+		if ($this->_platform === 'mysql')
+		{
+			$arg = md5($session_id.($this->_config['match_ip'] ? '_'.$_SERVER['REMOTE_ADDR'] : ''));
+			if ($this->_db->query("SELECT GET_LOCK('".$arg."', 300) AS ci_session_lock")->row()->ci_session_lock)
+			{
+				$this->_lock = $arg;
+				return TRUE;
+			}
+
+			return FALSE;
+		}
+		elseif ($this->_platform === 'postgre')
+		{
+			$arg = "hashtext('".$session_id."')".($this->_config['match_ip'] ? ", hashtext('".$_SERVER['REMOTE_ADDR']."')" : '');
+			if ($this->_db->simple_query('SELECT pg_advisory_lock('.$arg.')'))
+			{
+				$this->_lock = $arg;
+				return TRUE;
+			}
+
+			return FALSE;
+		}
+
+		return parent::_get_lock($session_id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Release lock
+	 *
+	 * Releases a previously acquired lock
+	 *
+	 * @return	bool
+	 */
+	protected function _release_lock()
+	{
+		if ( ! $this->_lock)
+		{
+			return TRUE;
+		}
+
+		if ($this->_platform === 'mysql')
+		{
+			if ($this->_db->query("SELECT RELEASE_LOCK('".$this->_lock."') AS ci_session_lock")->row()->ci_session_lock)
+			{
+				$this->_lock = FALSE;
+				return TRUE;
+			}
+
+			return FALSE;
+		}
+		elseif ($this->_platform === 'postgre')
+		{
+			if ($this->_db->simple_query('SELECT pg_advisory_unlock('.$this->_lock.')'))
+			{
+				$this->_lock = FALSE;
+				return TRUE;
+			}
+
+			return FALSE;
+		}
+
+		return parent::_release_lock();
+	}
+}
diff --git a/system/libraries/Session/drivers/Session_files_driver.php b/system/libraries/Session/drivers/Session_files_driver.php
new file mode 100644
index 00000000..49bf5b78
--- /dev/null
+++ b/system/libraries/Session/drivers/Session_files_driver.php
@@ -0,0 +1,432 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+*/
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Session Files Driver
+ *
+ * @package	CodeIgniter
+ * @subpackage	Libraries
+ * @category	Sessions
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/libraries/sessions.html
+ */
+class CI_Session_files_driver extends CI_Session_driver implements SessionHandlerInterface {
+
+	/**
+	 * Save path
+	 *
+	 * @var	string
+	 */
+	protected $_save_path;
+
+	/**
+	 * File handle
+	 *
+	 * @var	resource
+	 */
+	protected $_file_handle;
+
+	/**
+	 * File name
+	 *
+	 * @var	resource
+	 */
+	protected $_file_path;
+
+	/**
+	 * File new flag
+	 *
+	 * @var	bool
+	 */
+	protected $_file_new;
+
+	/**
+	 * Validate SID regular expression
+	 *
+	 * @var	string
+	 */
+	protected $_sid_regexp;
+
+	/**
+	 * mbstring.func_overload flag
+	 *
+	 * @var	bool
+	 */
+	protected static $func_overload;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(&$params)
+	{
+		parent::__construct($params);
+
+		if (isset($this->_config['save_path']))
+		{
+			$this->_config['save_path'] = rtrim($this->_config['save_path'], '/\\');
+			ini_set('session.save_path', $this->_config['save_path']);
+		}
+		else
+		{
+			log_message('debug', 'Session: "sess_save_path" is empty; using "session.save_path" value from php.ini.');
+			$this->_config['save_path'] = rtrim(ini_get('session.save_path'), '/\\');
+		}
+
+		$this->_sid_regexp = $this->_config['_sid_regexp'];
+
+		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Open
+	 *
+	 * Sanitizes the save_path directory.
+	 *
+	 * @param	string	$save_path	Path to session files' directory
+	 * @param	string	$name		Session cookie name
+	 * @return	bool
+	 */
+	public function open($save_path, $name)
+	{
+		if ( ! is_dir($save_path))
+		{
+			if ( ! mkdir($save_path, 0700, TRUE))
+			{
+				log_message('error', "Session: Configured save path '".$this->_config['save_path']."' is not a directory, doesn't exist or cannot be created.");
+				return $this->_failure;
+			}
+		}
+		elseif ( ! is_writable($save_path))
+		{
+			log_message('error', "Session: Configured save path '".$this->_config['save_path']."' is not writable by the PHP process.");
+			return $this->_failure;
+		}
+
+		$this->_config['save_path'] = $save_path;
+		$this->_file_path = $this->_config['save_path'].DIRECTORY_SEPARATOR
+			.$name // we'll use the session cookie name as a prefix to avoid collisions
+			.($this->_config['match_ip'] ? md5($_SERVER['REMOTE_ADDR']) : '');
+
+		$this->php5_validate_id();
+
+		return $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Read
+	 *
+	 * Reads session data and acquires a lock
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	string	Serialized session data
+	 */
+	public function read($session_id)
+	{
+		// This might seem weird, but PHP 5.6 introduces session_reset(),
+		// which re-reads session data
+		if ($this->_file_handle === NULL)
+		{
+			$this->_file_new = ! file_exists($this->_file_path.$session_id);
+
+			if (($this->_file_handle = fopen($this->_file_path.$session_id, 'c+b')) === FALSE)
+			{
+				log_message('error', "Session: Unable to open file '".$this->_file_path.$session_id."'.");
+				return $this->_failure;
+			}
+
+			if (flock($this->_file_handle, LOCK_EX) === FALSE)
+			{
+				log_message('error', "Session: Unable to obtain lock for file '".$this->_file_path.$session_id."'.");
+				fclose($this->_file_handle);
+				$this->_file_handle = NULL;
+				return $this->_failure;
+			}
+
+			// Needed by write() to detect session_regenerate_id() calls
+			$this->_session_id = $session_id;
+
+			if ($this->_file_new)
+			{
+				chmod($this->_file_path.$session_id, 0600);
+				$this->_fingerprint = md5('');
+				return '';
+			}
+
+			// Prevent possible data corruption
+			// See https://github.com/bcit-ci/CodeIgniter/issues/5857
+			clearstatcache(TRUE, $this->_file_path.$session_id);
+		}
+		// We shouldn't need this, but apparently we do ...
+		// See https://github.com/bcit-ci/CodeIgniter/issues/4039
+		elseif ($this->_file_handle === FALSE)
+		{
+			return $this->_failure;
+		}
+		else
+		{
+			rewind($this->_file_handle);
+		}
+
+		$session_data = '';
+		for ($read = 0, $length = filesize($this->_file_path.$session_id); $read < $length; $read += self::strlen($buffer))
+		{
+			if (($buffer = fread($this->_file_handle, $length - $read)) === FALSE)
+			{
+				break;
+			}
+
+			$session_data .= $buffer;
+		}
+
+		$this->_fingerprint = md5($session_data);
+		return $session_data;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Write
+	 *
+	 * Writes (create / update) session data
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @param	string	$session_data	Serialized session data
+	 * @return	bool
+	 */
+	public function write($session_id, $session_data)
+	{
+		// If the two IDs don't match, we have a session_regenerate_id() call
+		// and we need to close the old handle and open a new one
+		if ($session_id !== $this->_session_id && ($this->close() === $this->_failure OR $this->read($session_id) === $this->_failure))
+		{
+			return $this->_failure;
+		}
+
+		if ( ! is_resource($this->_file_handle))
+		{
+			return $this->_failure;
+		}
+		elseif ($this->_fingerprint === md5($session_data))
+		{
+			return ( ! $this->_file_new && ! touch($this->_file_path.$session_id))
+				? $this->_failure
+				: $this->_success;
+		}
+
+		if ( ! $this->_file_new)
+		{
+			ftruncate($this->_file_handle, 0);
+			rewind($this->_file_handle);
+		}
+
+		if (($length = strlen($session_data)) > 0)
+		{
+			for ($written = 0; $written < $length; $written += $result)
+			{
+				if (($result = fwrite($this->_file_handle, substr($session_data, $written))) === FALSE)
+				{
+					break;
+				}
+			}
+
+			if ( ! is_int($result))
+			{
+				$this->_fingerprint = md5(substr($session_data, 0, $written));
+				log_message('error', 'Session: Unable to write data.');
+				return $this->_failure;
+			}
+		}
+
+		$this->_fingerprint = md5($session_data);
+		return $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Close
+	 *
+	 * Releases locks and closes file descriptor.
+	 *
+	 * @return	bool
+	 */
+	public function close()
+	{
+		if (is_resource($this->_file_handle))
+		{
+			flock($this->_file_handle, LOCK_UN);
+			fclose($this->_file_handle);
+
+			$this->_file_handle = $this->_file_new = $this->_session_id = NULL;
+		}
+
+		return $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Destroy
+	 *
+	 * Destroys the current session.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	public function destroy($session_id)
+	{
+		if ($this->close() === $this->_success)
+		{
+			if (file_exists($this->_file_path.$session_id))
+			{
+				$this->_cookie_destroy();
+				return unlink($this->_file_path.$session_id)
+					? $this->_success
+					: $this->_failure;
+			}
+
+			return $this->_success;
+		}
+		elseif ($this->_file_path !== NULL)
+		{
+			clearstatcache();
+			if (file_exists($this->_file_path.$session_id))
+			{
+				$this->_cookie_destroy();
+				return unlink($this->_file_path.$session_id)
+					? $this->_success
+					: $this->_failure;
+			}
+
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Garbage Collector
+	 *
+	 * Deletes expired sessions
+	 *
+	 * @param	int 	$maxlifetime	Maximum lifetime of sessions
+	 * @return	bool
+	 */
+	public function gc($maxlifetime)
+	{
+		if ( ! is_dir($this->_config['save_path']) OR ($directory = opendir($this->_config['save_path'])) === FALSE)
+		{
+			log_message('debug', "Session: Garbage collector couldn't list files under directory '".$this->_config['save_path']."'.");
+			return $this->_failure;
+		}
+
+		$ts = time() - $maxlifetime;
+
+		$pattern = ($this->_config['match_ip'] === TRUE)
+			? '[0-9a-f]{32}'
+			: '';
+
+		$pattern = sprintf(
+			'#\A%s'.$pattern.$this->_sid_regexp.'\z#',
+			preg_quote($this->_config['cookie_name'])
+		);
+
+		while (($file = readdir($directory)) !== FALSE)
+		{
+			// If the filename doesn't match this pattern, it's either not a session file or is not ours
+			if ( ! preg_match($pattern, $file)
+				OR ! is_file($this->_config['save_path'].DIRECTORY_SEPARATOR.$file)
+				OR ($mtime = filemtime($this->_config['save_path'].DIRECTORY_SEPARATOR.$file)) === FALSE
+				OR $mtime > $ts)
+			{
+				continue;
+			}
+
+			unlink($this->_config['save_path'].DIRECTORY_SEPARATOR.$file);
+		}
+
+		closedir($directory);
+
+		return $this->_success;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate ID
+	 *
+	 * Checks whether a session ID record exists server-side,
+	 * to enforce session.use_strict_mode.
+	 *
+	 * @param	string	$id
+	 * @return	bool
+	 */
+	public function validateSessionId($id)
+	{
+		$result = is_file($this->_file_path.$id);
+		clearstatcache(TRUE, $this->_file_path.$id);
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return (self::$func_overload)
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+}
diff --git a/system/libraries/Session/drivers/Session_memcached_driver.php b/system/libraries/Session/drivers/Session_memcached_driver.php
new file mode 100644
index 00000000..b4d3eb46
--- /dev/null
+++ b/system/libraries/Session/drivers/Session_memcached_driver.php
@@ -0,0 +1,397 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Session Memcached Driver
+ *
+ * @package	CodeIgniter
+ * @subpackage	Libraries
+ * @category	Sessions
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/libraries/sessions.html
+ */
+class CI_Session_memcached_driver extends CI_Session_driver implements SessionHandlerInterface {
+
+	/**
+	 * Memcached instance
+	 *
+	 * @var	Memcached
+	 */
+	protected $_memcached;
+
+	/**
+	 * Key prefix
+	 *
+	 * @var	string
+	 */
+	protected $_key_prefix = 'ci_session:';
+
+	/**
+	 * Lock key
+	 *
+	 * @var	string
+	 */
+	protected $_lock_key;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(&$params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->_config['save_path']))
+		{
+			log_message('error', 'Session: No Memcached save path configured.');
+		}
+
+		if ($this->_config['match_ip'] === TRUE)
+		{
+			$this->_key_prefix .= $_SERVER['REMOTE_ADDR'].':';
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Open
+	 *
+	 * Sanitizes save_path and initializes connections.
+	 *
+	 * @param	string	$save_path	Server path(s)
+	 * @param	string	$name		Session cookie name, unused
+	 * @return	bool
+	 */
+	public function open($save_path, $name)
+	{
+		$this->_memcached = new Memcached();
+		$this->_memcached->setOption(Memcached::OPT_BINARY_PROTOCOL, TRUE); // required for touch() usage
+		$server_list = array();
+		foreach ($this->_memcached->getServerList() as $server)
+		{
+			$server_list[] = $server['host'].':'.$server['port'];
+		}
+
+		if ( ! preg_match_all('#,?([^,:]+)\:(\d{1,5})(?:\:(\d+))?#', $this->_config['save_path'], $matches, PREG_SET_ORDER))
+		{
+			$this->_memcached = NULL;
+			log_message('error', 'Session: Invalid Memcached save path format: '.$this->_config['save_path']);
+			return $this->_failure;
+		}
+
+		foreach ($matches as $match)
+		{
+			// If Memcached already has this server (or if the port is invalid), skip it
+			if (in_array($match[1].':'.$match[2], $server_list, TRUE))
+			{
+				log_message('debug', 'Session: Memcached server pool already has '.$match[1].':'.$match[2]);
+				continue;
+			}
+
+			if ( ! $this->_memcached->addServer($match[1], $match[2], isset($match[3]) ? $match[3] : 0))
+			{
+				log_message('error', 'Could not add '.$match[1].':'.$match[2].' to Memcached server pool.');
+			}
+			else
+			{
+				$server_list[] = $match[1].':'.$match[2];
+			}
+		}
+
+		if (empty($server_list))
+		{
+			log_message('error', 'Session: Memcached server pool is empty.');
+			return $this->_failure;
+		}
+
+		$this->php5_validate_id();
+
+		return $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Read
+	 *
+	 * Reads session data and acquires a lock
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	string	Serialized session data
+	 */
+	public function read($session_id)
+	{
+		if (isset($this->_memcached) && $this->_get_lock($session_id))
+		{
+			// Needed by write() to detect session_regenerate_id() calls
+			$this->_session_id = $session_id;
+
+			$session_data = (string) $this->_memcached->get($this->_key_prefix.$session_id);
+			$this->_fingerprint = md5($session_data);
+			return $session_data;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Write
+	 *
+	 * Writes (create / update) session data
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @param	string	$session_data	Serialized session data
+	 * @return	bool
+	 */
+	public function write($session_id, $session_data)
+	{
+		if ( ! isset($this->_memcached, $this->_lock_key))
+		{
+			return $this->_failure;
+		}
+		// Was the ID regenerated?
+		elseif ($session_id !== $this->_session_id)
+		{
+			if ( ! $this->_release_lock() OR ! $this->_get_lock($session_id))
+			{
+				return $this->_failure;
+			}
+
+			$this->_fingerprint = md5('');
+			$this->_session_id = $session_id;
+		}
+
+		$key = $this->_key_prefix.$session_id;
+
+		$this->_memcached->replace($this->_lock_key, time(), 300);
+		if ($this->_fingerprint !== ($fingerprint = md5($session_data)))
+		{
+			if ($this->_memcached->set($key, $session_data, $this->_config['expiration']))
+			{
+				$this->_fingerprint = $fingerprint;
+				return $this->_success;
+			}
+
+			return $this->_failure;
+		}
+		elseif (
+			$this->_memcached->touch($key, $this->_config['expiration'])
+			OR ($this->_memcached->getResultCode() === Memcached::RES_NOTFOUND && $this->_memcached->set($key, $session_data, $this->_config['expiration']))
+		)
+		{
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Close
+	 *
+	 * Releases locks and closes connection.
+	 *
+	 * @return	bool
+	 */
+	public function close()
+	{
+		if (isset($this->_memcached))
+		{
+			$this->_release_lock();
+			if ( ! $this->_memcached->quit())
+			{
+				return $this->_failure;
+			}
+
+			$this->_memcached = NULL;
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Destroy
+	 *
+	 * Destroys the current session.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	public function destroy($session_id)
+	{
+		if (isset($this->_memcached, $this->_lock_key))
+		{
+			$this->_memcached->delete($this->_key_prefix.$session_id);
+			$this->_cookie_destroy();
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Garbage Collector
+	 *
+	 * Deletes expired sessions
+	 *
+	 * @param	int 	$maxlifetime	Maximum lifetime of sessions
+	 * @return	bool
+	 */
+	public function gc($maxlifetime)
+	{
+		// Not necessary, Memcached takes care of that.
+		return $this->_success;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate ID
+	 *
+	 * Checks whether a session ID record exists server-side,
+	 * to enforce session.use_strict_mode.
+	 *
+	 * @param	string	$id
+	 * @return	bool
+	 */
+	public function validateSessionId($id)
+	{
+		$this->_memcached->get($this->_key_prefix.$id);
+		return ($this->_memcached->getResultCode() === Memcached::RES_SUCCESS);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get lock
+	 *
+	 * Acquires an (emulated) lock.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	protected function _get_lock($session_id)
+	{
+		// PHP 7 reuses the SessionHandler object on regeneration,
+		// so we need to check here if the lock key is for the
+		// correct session ID.
+		if ($this->_lock_key === $this->_key_prefix.$session_id.':lock')
+		{
+			if ( ! $this->_memcached->replace($this->_lock_key, time(), 300))
+			{
+				return ($this->_memcached->getResultCode() === Memcached::RES_NOTFOUND)
+					? $this->_memcached->add($this->_lock_key, time(), 300)
+					: FALSE;
+			}
+
+			return TRUE;
+		}
+
+		// 30 attempts to obtain a lock, in case another request already has it
+		$lock_key = $this->_key_prefix.$session_id.':lock';
+		$attempt = 0;
+		do
+		{
+			if ($this->_memcached->get($lock_key))
+			{
+				sleep(1);
+				continue;
+			}
+
+			$method = ($this->_memcached->getResultCode() === Memcached::RES_NOTFOUND) ? 'add' : 'set';
+			if ( ! $this->_memcached->$method($lock_key, time(), 300))
+			{
+				log_message('error', 'Session: Error while trying to obtain lock for '.$this->_key_prefix.$session_id);
+				return FALSE;
+			}
+
+			$this->_lock_key = $lock_key;
+			break;
+		}
+		while (++$attempt < 30);
+
+		if ($attempt === 30)
+		{
+			log_message('error', 'Session: Unable to obtain lock for '.$this->_key_prefix.$session_id.' after 30 attempts, aborting.');
+			return FALSE;
+		}
+
+		$this->_lock = TRUE;
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Release lock
+	 *
+	 * Releases a previously acquired lock
+	 *
+	 * @return	bool
+	 */
+	protected function _release_lock()
+	{
+		if (isset($this->_memcached, $this->_lock_key) && $this->_lock)
+		{
+			if ( ! $this->_memcached->delete($this->_lock_key) && $this->_memcached->getResultCode() !== Memcached::RES_NOTFOUND)
+			{
+				log_message('error', 'Session: Error while trying to free lock for '.$this->_lock_key);
+				return FALSE;
+			}
+
+			$this->_lock_key = NULL;
+			$this->_lock = FALSE;
+		}
+
+		return TRUE;
+	}
+}
diff --git a/system/libraries/Session/drivers/Session_redis_driver.php b/system/libraries/Session/drivers/Session_redis_driver.php
new file mode 100644
index 00000000..df99cc74
--- /dev/null
+++ b/system/libraries/Session/drivers/Session_redis_driver.php
@@ -0,0 +1,485 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Session Redis Driver
+ *
+ * @package	CodeIgniter
+ * @subpackage	Libraries
+ * @category	Sessions
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/libraries/sessions.html
+ */
+class CI_Session_redis_driver extends CI_Session_driver implements SessionHandlerInterface {
+
+	/**
+	 * phpRedis instance
+	 *
+	 * @var	Redis
+	 */
+	protected $_redis;
+
+	/**
+	 * Key prefix
+	 *
+	 * @var	string
+	 */
+	protected $_key_prefix = 'ci_session:';
+
+	/**
+	 * Lock key
+	 *
+	 * @var	string
+	 */
+	protected $_lock_key;
+
+	/**
+	 * Key exists flag
+	 *
+	 * @var bool
+	 */
+	protected $_key_exists = FALSE;
+
+	/**
+	 * Name of setTimeout() method in phpRedis
+	 *
+	 * Due to some deprecated methods in phpRedis, we need to call the
+	 * specific methods depending on the version of phpRedis.
+	 *
+	 * @var string
+	 */
+	protected $_setTimeout_name;
+
+	/**
+	 * Name of delete() method in phpRedis
+	 *
+	 * Due to some deprecated methods in phpRedis, we need to call the
+	 * specific methods depending on the version of phpRedis.
+	 *
+	 * @var string
+	 */
+	protected $_delete_name;
+
+	/**
+	 * Success return value of ping() method in phpRedis
+	 *
+	 * @var mixed
+	 */
+	protected $_ping_success;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(&$params)
+	{
+		parent::__construct($params);
+
+		// Detect the names of some methods in phpRedis instance
+		if (version_compare(phpversion('redis'), '5', '>='))
+		{
+			$this->_setTimeout_name = 'expire';
+			$this->_delete_name = 'del';
+			$this->_ping_success = TRUE;
+		}
+		else
+		{
+			$this->_setTimeout_name = 'setTimeout';
+			$this->_delete_name = 'delete';
+			$this->_ping_success = '+PONG';
+		}
+
+		if (empty($this->_config['save_path']))
+		{
+			log_message('error', 'Session: No Redis save path configured.');
+		}
+		elseif (preg_match('#^unix://([^\?]+)(?<options>\?.+)?$#', $this->_config['save_path'], $matches))
+		{
+			$save_path = array('path' => $matches[1]);
+		}
+		elseif (preg_match('#(?:(?:tcp|tls)://)?([^:?]+)(?:\:(\d+))?(?<options>\?.+)?#', $this->_config['save_path'], $matches))
+		{
+			$save_path = array(
+				'host'    => $matches[1],
+				'port'    => empty($matches[2]) ? NULL : $matches[2],
+				'timeout' => NULL // We always pass this to Redis::connect(), so it needs to exist
+			);
+		}
+		else
+		{
+			log_message('error', 'Session: Invalid Redis save path format: '.$this->_config['save_path']);
+		}
+
+		if (isset($save_path))
+		{
+			if (isset($matches['options']))
+			{
+				$save_path['password'] = preg_match('#auth=([^\s&]+)#', $matches['options'], $match) ? $match[1] : NULL;
+				$save_path['database'] = preg_match('#database=(\d+)#', $matches['options'], $match) ? (int) $match[1] : NULL;
+				$save_path['timeout']  = preg_match('#timeout=(\d+\.\d+)#', $matches['options'], $match) ? (float) $match[1] : NULL;
+
+				preg_match('#prefix=([^\s&]+)#', $matches['options'], $match) && $this->_key_prefix = $match[1];
+			}
+
+			$this->_config['save_path'] = $save_path;
+
+			if ($this->_config['match_ip'] === TRUE)
+			{
+				$this->_key_prefix .= $_SERVER['REMOTE_ADDR'].':';
+			}
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Open
+	 *
+	 * Sanitizes save_path and initializes connection.
+	 *
+	 * @param	string	$save_path	Server path
+	 * @param	string	$name		Session cookie name, unused
+	 * @return	bool
+	 */
+	public function open($save_path, $name)
+	{
+		if (empty($this->_config['save_path']))
+		{
+			return $this->_failure;
+		}
+
+		$redis = new Redis();
+		$connected = isset($this->_config['save_path']['path'])
+			? $redis->connect($this->_config['save_path']['path'])
+			: $redis->connect(
+				$this->_config['save_path']['host'],
+				$this->_config['save_path']['port'],
+				$this->_config['save_path']['timeout']
+			);
+
+		if ($connected)
+		{
+			if (isset($this->_config['save_path']['password']) && ! $redis->auth($this->_config['save_path']['password']))
+			{
+				log_message('error', 'Session: Unable to authenticate to Redis instance.');
+			}
+			elseif (isset($this->_config['save_path']['database']) && ! $redis->select($this->_config['save_path']['database']))
+			{
+				log_message('error', 'Session: Unable to select Redis database with index '.$this->_config['save_path']['database']);
+			}
+			else
+			{
+				$this->_redis = $redis;
+				$this->php5_validate_id();
+				return $this->_success;
+			}
+		}
+		else
+		{
+			$this->_redis = $redis;
+			$this->php5_validate_id();
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Read
+	 *
+	 * Reads session data and acquires a lock
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	string	Serialized session data
+	 */
+	public function read($session_id)
+	{
+		if (isset($this->_redis) && $this->_get_lock($session_id))
+		{
+			// Needed by write() to detect session_regenerate_id() calls
+			$this->_session_id = $session_id;
+
+			$session_data = $this->_redis->get($this->_key_prefix.$session_id);
+
+			is_string($session_data)
+				? $this->_key_exists = TRUE
+				: $session_data = '';
+
+			$this->_fingerprint = md5($session_data);
+			return $session_data;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Write
+	 *
+	 * Writes (create / update) session data
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @param	string	$session_data	Serialized session data
+	 * @return	bool
+	 */
+	public function write($session_id, $session_data)
+	{
+		if ( ! isset($this->_redis, $this->_lock_key))
+		{
+			return $this->_failure;
+		}
+		// Was the ID regenerated?
+		elseif ($session_id !== $this->_session_id)
+		{
+			if ( ! $this->_release_lock() OR ! $this->_get_lock($session_id))
+			{
+				return $this->_failure;
+			}
+
+			$this->_key_exists = FALSE;
+			$this->_session_id = $session_id;
+		}
+
+		$this->_redis->{$this->_setTimeout_name}($this->_lock_key, 300);
+		if ($this->_fingerprint !== ($fingerprint = md5($session_data)) OR $this->_key_exists === FALSE)
+		{
+			if ($this->_redis->set($this->_key_prefix.$session_id, $session_data, $this->_config['expiration']))
+			{
+				$this->_fingerprint = $fingerprint;
+				$this->_key_exists = TRUE;
+				return $this->_success;
+			}
+
+			return $this->_failure;
+		}
+
+		return ($this->_redis->{$this->_setTimeout_name}($this->_key_prefix.$session_id, $this->_config['expiration']))
+			? $this->_success
+			: $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Close
+	 *
+	 * Releases locks and closes connection.
+	 *
+	 * @return	bool
+	 */
+	public function close()
+	{
+		if (isset($this->_redis))
+		{
+			try {
+				if ($this->_redis->ping() === $this->_ping_success)
+				{
+					$this->_release_lock();
+					if ($this->_redis->close() === FALSE)
+					{
+						return $this->_failure;
+					}
+				}
+			}
+			catch (RedisException $e)
+			{
+				log_message('error', 'Session: Got RedisException on close(): '.$e->getMessage());
+			}
+
+			$this->_redis = NULL;
+			return $this->_success;
+		}
+
+		return $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Destroy
+	 *
+	 * Destroys the current session.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	public function destroy($session_id)
+	{
+		if (isset($this->_redis, $this->_lock_key))
+		{
+			if (($result = $this->_redis->{$this->_delete_name}($this->_key_prefix.$session_id)) !== 1)
+			{
+				log_message('debug', 'Session: Redis::'.$this->_delete_name.'() expected to return 1, got '.var_export($result, TRUE).' instead.');
+			}
+
+			$this->_cookie_destroy();
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Garbage Collector
+	 *
+	 * Deletes expired sessions
+	 *
+	 * @param	int 	$maxlifetime	Maximum lifetime of sessions
+	 * @return	bool
+	 */
+	public function gc($maxlifetime)
+	{
+		// Not necessary, Redis takes care of that.
+		return $this->_success;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate ID
+	 *
+	 * Checks whether a session ID record exists server-side,
+	 * to enforce session.use_strict_mode.
+	 *
+	 * @param	string	$id
+	 * @return	bool
+	 */
+	public function validateSessionId($id)
+	{
+		return (bool) $this->_redis->exists($this->_key_prefix.$id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get lock
+	 *
+	 * Acquires an (emulated) lock.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	protected function _get_lock($session_id)
+	{
+		// PHP 7 reuses the SessionHandler object on regeneration,
+		// so we need to check here if the lock key is for the
+		// correct session ID.
+		if ($this->_lock_key === $this->_key_prefix.$session_id.':lock')
+		{
+			return $this->_redis->{$this->_setTimeout_name}($this->_lock_key, 300);
+		}
+
+		// 30 attempts to obtain a lock, in case another request already has it
+		$lock_key = $this->_key_prefix.$session_id.':lock';
+		$attempt = 0;
+		do
+		{
+			if (($ttl = $this->_redis->ttl($lock_key)) > 0)
+			{
+				sleep(1);
+				continue;
+			}
+
+			if ($ttl === -2 && ! $this->_redis->set($lock_key, time(), array('nx', 'ex' => 300)))
+			{
+				// Sleep for 1s to wait for lock releases.
+				sleep(1);
+				continue;
+			}
+			elseif ( ! $this->_redis->setex($lock_key, 300, time()))
+			{
+				log_message('error', 'Session: Error while trying to obtain lock for '.$this->_key_prefix.$session_id);
+				return FALSE;
+			}
+
+			$this->_lock_key = $lock_key;
+			break;
+		}
+		while (++$attempt < 30);
+
+		if ($attempt === 30)
+		{
+			log_message('error', 'Session: Unable to obtain lock for '.$this->_key_prefix.$session_id.' after 30 attempts, aborting.');
+			return FALSE;
+		}
+		elseif ($ttl === -1)
+		{
+			log_message('debug', 'Session: Lock for '.$this->_key_prefix.$session_id.' had no TTL, overriding.');
+		}
+
+		$this->_lock = TRUE;
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Release lock
+	 *
+	 * Releases a previously acquired lock
+	 *
+	 * @return	bool
+	 */
+	protected function _release_lock()
+	{
+		if (isset($this->_redis, $this->_lock_key) && $this->_lock)
+		{
+			if ( ! $this->_redis->{$this->_delete_name}($this->_lock_key))
+			{
+				log_message('error', 'Session: Error while trying to free lock for '.$this->_lock_key);
+				return FALSE;
+			}
+
+			$this->_lock_key = NULL;
+			$this->_lock = FALSE;
+		}
+
+		return TRUE;
+	}
+
+}
diff --git a/system/libraries/Session/drivers/index.html b/system/libraries/Session/drivers/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/libraries/Session/drivers/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/libraries/Session/index.html b/system/libraries/Session/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/libraries/Session/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/libraries/Table.php b/system/libraries/Table.php
new file mode 100644
index 00000000..98258b63
--- /dev/null
+++ b/system/libraries/Table.php
@@ -0,0 +1,539 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.1
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * HTML Table Generating Class
+ *
+ * Lets you create tables manually or from database result objects, or arrays.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	HTML Tables
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/table.html
+ */
+class CI_Table {
+
+	/**
+	 * Data for table rows
+	 *
+	 * @var array
+	 */
+	public $rows		= array();
+
+	/**
+	 * Data for table heading
+	 *
+	 * @var array
+	 */
+	public $heading		= array();
+
+	/**
+	 * Whether or not to automatically create the table header
+	 *
+	 * @var bool
+	 */
+	public $auto_heading	= TRUE;
+
+	/**
+	 * Table caption
+	 *
+	 * @var string
+	 */
+	public $caption		= NULL;
+
+	/**
+	 * Table layout template
+	 *
+	 * @var array
+	 */
+	public $template	= NULL;
+
+	/**
+	 * Newline setting
+	 *
+	 * @var string
+	 */
+	public $newline		= "\n";
+
+	/**
+	 * Contents of empty cells
+	 *
+	 * @var string
+	 */
+	public $empty_cells	= '';
+
+	/**
+	 * Callback for custom table layout
+	 *
+	 * @var function
+	 */
+	public $function	= NULL;
+
+	/**
+	 * Set the template from the table config file if it exists
+	 *
+	 * @param	array	$config	(default: array())
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		// initialize config
+		foreach ($config as $key => $val)
+		{
+			$this->template[$key] = $val;
+		}
+
+		log_message('info', 'Table Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the template
+	 *
+	 * @param	array	$template
+	 * @return	bool
+	 */
+	public function set_template($template)
+	{
+		if ( ! is_array($template))
+		{
+			return FALSE;
+		}
+
+		$this->template = $template;
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the table heading
+	 *
+	 * Can be passed as an array or discreet params
+	 *
+	 * @param	mixed
+	 * @return	CI_Table
+	 */
+	public function set_heading($args = array())
+	{
+		$this->heading = $this->_prep_args(func_get_args());
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set columns. Takes a one-dimensional array as input and creates
+	 * a multi-dimensional array with a depth equal to the number of
+	 * columns. This allows a single array with many elements to be
+	 * displayed in a table that has a fixed column count.
+	 *
+	 * @param	array	$array
+	 * @param	int	$col_limit
+	 * @return	array
+	 */
+	public function make_columns($array = array(), $col_limit = 0)
+	{
+		if ( ! is_array($array) OR count($array) === 0 OR ! is_int($col_limit))
+		{
+			return FALSE;
+		}
+
+		// Turn off the auto-heading feature since it's doubtful we
+		// will want headings from a one-dimensional array
+		$this->auto_heading = FALSE;
+
+		if ($col_limit === 0)
+		{
+			return $array;
+		}
+
+		$new = array();
+		do
+		{
+			$temp = array_splice($array, 0, $col_limit);
+
+			if (count($temp) < $col_limit)
+			{
+				for ($i = count($temp); $i < $col_limit; $i++)
+				{
+					$temp[] = '&nbsp;';
+				}
+			}
+
+			$new[] = $temp;
+		}
+		while (count($array) > 0);
+
+		return $new;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set "empty" cells
+	 *
+	 * Can be passed as an array or discreet params
+	 *
+	 * @param	mixed	$value
+	 * @return	CI_Table
+	 */
+	public function set_empty($value)
+	{
+		$this->empty_cells = $value;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add a table row
+	 *
+	 * Can be passed as an array or discreet params
+	 *
+	 * @param	mixed
+	 * @return	CI_Table
+	 */
+	public function add_row($args = array())
+	{
+		$this->rows[] = $this->_prep_args(func_get_args());
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep Args
+	 *
+	 * Ensures a standard associative array format for all cell data
+	 *
+	 * @param	array
+	 * @return	array
+	 */
+	protected function _prep_args($args)
+	{
+		// If there is no $args[0], skip this and treat as an associative array
+		// This can happen if there is only a single key, for example this is passed to table->generate
+		// array(array('foo'=>'bar'))
+		if (isset($args[0]) && count($args) === 1 && is_array($args[0]) && ! isset($args[0]['data']))
+		{
+			$args = $args[0];
+		}
+
+		foreach ($args as $key => $val)
+		{
+			is_array($val) OR $args[$key] = array('data' => $val);
+		}
+
+		return $args;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add a table caption
+	 *
+	 * @param	string	$caption
+	 * @return	CI_Table
+	 */
+	public function set_caption($caption)
+	{
+		$this->caption = $caption;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate the table
+	 *
+	 * @param	mixed	$table_data
+	 * @return	string
+	 */
+	public function generate($table_data = NULL)
+	{
+		// The table data can optionally be passed to this function
+		// either as a database result object or an array
+		if ( ! empty($table_data))
+		{
+			if ($table_data instanceof CI_DB_result)
+			{
+				$this->_set_from_db_result($table_data);
+			}
+			elseif (is_array($table_data))
+			{
+				$this->_set_from_array($table_data);
+			}
+		}
+
+		// Is there anything to display? No? Smite them!
+		if (empty($this->heading) && empty($this->rows))
+		{
+			return 'Undefined table data';
+		}
+
+		// Compile and validate the template date
+		$this->_compile_template();
+
+		// Validate a possibly existing custom cell manipulation function
+		if (isset($this->function) && ! is_callable($this->function))
+		{
+			$this->function = NULL;
+		}
+
+		// Build the table!
+
+		$out = $this->template['table_open'].$this->newline;
+
+		// Add any caption here
+		if ($this->caption)
+		{
+			$out .= '<caption>'.$this->caption.'</caption>'.$this->newline;
+		}
+
+		// Is there a table heading to display?
+		if ( ! empty($this->heading))
+		{
+			$out .= $this->template['thead_open'].$this->newline.$this->template['heading_row_start'].$this->newline;
+
+			foreach ($this->heading as $heading)
+			{
+				$temp = $this->template['heading_cell_start'];
+
+				foreach ($heading as $key => $val)
+				{
+					if ($key !== 'data')
+					{
+						$temp = str_replace('<th', '<th '.$key.'="'.$val.'"', $temp);
+					}
+				}
+
+				$out .= $temp.(isset($heading['data']) ? $heading['data'] : '').$this->template['heading_cell_end'];
+			}
+
+			$out .= $this->template['heading_row_end'].$this->newline.$this->template['thead_close'].$this->newline;
+		}
+
+		// Build the table rows
+		if ( ! empty($this->rows))
+		{
+			$out .= $this->template['tbody_open'].$this->newline;
+
+			$i = 1;
+			foreach ($this->rows as $row)
+			{
+				if ( ! is_array($row))
+				{
+					break;
+				}
+
+				// We use modulus to alternate the row colors
+				$name = fmod($i++, 2) ? '' : 'alt_';
+
+				$out .= $this->template['row_'.$name.'start'].$this->newline;
+
+				foreach ($row as $cell)
+				{
+					$temp = $this->template['cell_'.$name.'start'];
+
+					foreach ($cell as $key => $val)
+					{
+						if ($key !== 'data')
+						{
+							$temp = str_replace('<td', '<td '.$key.'="'.$val.'"', $temp);
+						}
+					}
+
+					$cell = isset($cell['data']) ? $cell['data'] : '';
+					$out .= $temp;
+
+					if ($cell === '' OR $cell === NULL)
+					{
+						$out .= $this->empty_cells;
+					}
+					elseif (isset($this->function))
+					{
+						$out .= call_user_func($this->function, $cell);
+					}
+					else
+					{
+						$out .= $cell;
+					}
+
+					$out .= $this->template['cell_'.$name.'end'];
+				}
+
+				$out .= $this->template['row_'.$name.'end'].$this->newline;
+			}
+
+			$out .= $this->template['tbody_close'].$this->newline;
+		}
+
+		$out .= $this->template['table_close'];
+
+		// Clear table class properties before generating the table
+		$this->clear();
+
+		return $out;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Clears the table arrays.  Useful if multiple tables are being generated
+	 *
+	 * @return	CI_Table
+	 */
+	public function clear()
+	{
+		$this->rows = array();
+		$this->heading = array();
+		$this->auto_heading = TRUE;
+		$this->caption = NULL;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set table data from a database result object
+	 *
+	 * @param	CI_DB_result	$object	Database result object
+	 * @return	void
+	 */
+	protected function _set_from_db_result($object)
+	{
+		// First generate the headings from the table column names
+		if ($this->auto_heading === TRUE && empty($this->heading))
+		{
+			$this->heading = $this->_prep_args($object->list_fields());
+		}
+
+		foreach ($object->result_array() as $row)
+		{
+			$this->rows[] = $this->_prep_args($row);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set table data from an array
+	 *
+	 * @param	array	$data
+	 * @return	void
+	 */
+	protected function _set_from_array($data)
+	{
+		if ($this->auto_heading === TRUE && empty($this->heading))
+		{
+			$this->heading = $this->_prep_args(array_shift($data));
+		}
+
+		foreach ($data as &$row)
+		{
+			$this->rows[] = $this->_prep_args($row);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile Template
+	 *
+	 * @return	void
+	 */
+	protected function _compile_template()
+	{
+		if ($this->template === NULL)
+		{
+			$this->template = $this->_default_template();
+			return;
+		}
+
+		$this->temp = $this->_default_template();
+		foreach (array('table_open', 'thead_open', 'thead_close', 'heading_row_start', 'heading_row_end', 'heading_cell_start', 'heading_cell_end', 'tbody_open', 'tbody_close', 'row_start', 'row_end', 'cell_start', 'cell_end', 'row_alt_start', 'row_alt_end', 'cell_alt_start', 'cell_alt_end', 'table_close') as $val)
+		{
+			if ( ! isset($this->template[$val]))
+			{
+				$this->template[$val] = $this->temp[$val];
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Default Template
+	 *
+	 * @return	array
+	 */
+	protected function _default_template()
+	{
+		return array(
+			'table_open'		=> '<table border="0" cellpadding="4" cellspacing="0">',
+
+			'thead_open'		=> '<thead>',
+			'thead_close'		=> '</thead>',
+
+			'heading_row_start'	=> '<tr>',
+			'heading_row_end'	=> '</tr>',
+			'heading_cell_start'	=> '<th>',
+			'heading_cell_end'	=> '</th>',
+
+			'tbody_open'		=> '<tbody>',
+			'tbody_close'		=> '</tbody>',
+
+			'row_start'		=> '<tr>',
+			'row_end'		=> '</tr>',
+			'cell_start'		=> '<td>',
+			'cell_end'		=> '</td>',
+
+			'row_alt_start'		=> '<tr>',
+			'row_alt_end'		=> '</tr>',
+			'cell_alt_start'	=> '<td>',
+			'cell_alt_end'		=> '</td>',
+
+			'table_close'		=> '</table>'
+		);
+	}
+
+}
diff --git a/system/libraries/Trackback.php b/system/libraries/Trackback.php
new file mode 100644
index 00000000..75ccae8f
--- /dev/null
+++ b/system/libraries/Trackback.php
@@ -0,0 +1,556 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Trackback Class
+ *
+ * Trackback Sending/Receiving Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Trackbacks
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/trackback.html
+ */
+class CI_Trackback {
+
+	/**
+	 * Character set
+	 *
+	 * @var	string
+	 */
+	public $charset = 'UTF-8';
+
+	/**
+	 * Trackback data
+	 *
+	 * @var	array
+	 */
+	public $data = array(
+		'url' => '',
+		'title' => '',
+		'excerpt' => '',
+		'blog_name' => '',
+		'charset' => ''
+	);
+
+	/**
+	 * Convert ASCII flag
+	 *
+	 * Whether to convert high-ASCII and MS Word
+	 * characters to HTML entities.
+	 *
+	 * @var	bool
+	 */
+	public $convert_ascii = TRUE;
+
+	/**
+	 * Response
+	 *
+	 * @var	string
+	 */
+	public $response = '';
+
+	/**
+	 * Error messages list
+	 *
+	 * @var	string[]
+	 */
+	public $error_msg = array();
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		log_message('info', 'Trackback Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send Trackback
+	 *
+	 * @param	array
+	 * @return	bool
+	 */
+	public function send($tb_data)
+	{
+		if ( ! is_array($tb_data))
+		{
+			$this->set_error('The send() method must be passed an array');
+			return FALSE;
+		}
+
+		// Pre-process the Trackback Data
+		foreach (array('url', 'title', 'excerpt', 'blog_name', 'ping_url') as $item)
+		{
+			if ( ! isset($tb_data[$item]))
+			{
+				$this->set_error('Required item missing: '.$item);
+				return FALSE;
+			}
+
+			switch ($item)
+			{
+				case 'ping_url':
+					$$item = $this->extract_urls($tb_data[$item]);
+					break;
+				case 'excerpt':
+					$$item = $this->limit_characters($this->convert_xml(strip_tags(stripslashes($tb_data[$item]))));
+					break;
+				case 'url':
+					$$item = str_replace('&#45;', '-', $this->convert_xml(strip_tags(stripslashes($tb_data[$item]))));
+					break;
+				default:
+					$$item = $this->convert_xml(strip_tags(stripslashes($tb_data[$item])));
+					break;
+			}
+
+			// Convert High ASCII Characters
+			if ($this->convert_ascii === TRUE && in_array($item, array('excerpt', 'title', 'blog_name'), TRUE))
+			{
+				$$item = $this->convert_ascii($$item);
+			}
+		}
+
+		// Build the Trackback data string
+		$charset = isset($tb_data['charset']) ? $tb_data['charset'] : $this->charset;
+
+		$data = 'url='.rawurlencode($url).'&title='.rawurlencode($title).'&blog_name='.rawurlencode($blog_name)
+			.'&excerpt='.rawurlencode($excerpt).'&charset='.rawurlencode($charset);
+
+		// Send Trackback(s)
+		$return = TRUE;
+		if (count($ping_url) > 0)
+		{
+			foreach ($ping_url as $url)
+			{
+				if ($this->process($url, $data) === FALSE)
+				{
+					$return = FALSE;
+				}
+			}
+		}
+
+		return $return;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Receive Trackback  Data
+	 *
+	 * This function simply validates the incoming TB data.
+	 * It returns FALSE on failure and TRUE on success.
+	 * If the data is valid it is set to the $this->data array
+	 * so that it can be inserted into a database.
+	 *
+	 * @return	bool
+	 */
+	public function receive()
+	{
+		foreach (array('url', 'title', 'blog_name', 'excerpt') as $val)
+		{
+			if (empty($_POST[$val]))
+			{
+				$this->set_error('The following required POST variable is missing: '.$val);
+				return FALSE;
+			}
+
+			$this->data['charset'] = isset($_POST['charset']) ? strtoupper(trim($_POST['charset'])) : 'auto';
+
+			if ($val !== 'url' && MB_ENABLED === TRUE)
+			{
+				if (MB_ENABLED === TRUE)
+				{
+					$_POST[$val] = mb_convert_encoding($_POST[$val], $this->charset, $this->data['charset']);
+				}
+				elseif (ICONV_ENABLED === TRUE)
+				{
+					$_POST[$val] = @iconv($this->data['charset'], $this->charset.'//IGNORE', $_POST[$val]);
+				}
+			}
+
+			$_POST[$val] = ($val !== 'url') ? $this->convert_xml(strip_tags($_POST[$val])) : strip_tags($_POST[$val]);
+
+			if ($val === 'excerpt')
+			{
+				$_POST['excerpt'] = $this->limit_characters($_POST['excerpt']);
+			}
+
+			$this->data[$val] = $_POST[$val];
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send Trackback Error Message
+	 *
+	 * Allows custom errors to be set. By default it
+	 * sends the "incomplete information" error, as that's
+	 * the most common one.
+	 *
+	 * @param	string
+	 * @return	void
+	 */
+	public function send_error($message = 'Incomplete Information')
+	{
+		exit('<?xml version="1.0" encoding="utf-8"?'.">\n<response>\n<error>1</error>\n<message>".$message."</message>\n</response>");
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send Trackback Success Message
+	 *
+	 * This should be called when a trackback has been
+	 * successfully received and inserted.
+	 *
+	 * @return	void
+	 */
+	public function send_success()
+	{
+		exit('<?xml version="1.0" encoding="utf-8"?'.">\n<response>\n<error>0</error>\n</response>");
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch a particular item
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function data($item)
+	{
+		return isset($this->data[$item]) ? $this->data[$item] : '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process Trackback
+	 *
+	 * Opens a socket connection and passes the data to
+	 * the server. Returns TRUE on success, FALSE on failure
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	public function process($url, $data)
+	{
+		$target = parse_url($url);
+
+		// Open the socket
+		if ( ! $fp = @fsockopen($target['host'], 80))
+		{
+			$this->set_error('Invalid Connection: '.$url);
+			return FALSE;
+		}
+
+		// Build the path
+		$path = isset($target['path']) ? $target['path'] : $url;
+		empty($target['query']) OR $path .= '?'.$target['query'];
+
+		// Add the Trackback ID to the data string
+		if ($id = $this->get_id($url))
+		{
+			$data = 'tb_id='.$id.'&'.$data;
+		}
+
+		// Transfer the data
+		fputs($fp, 'POST '.$path." HTTP/1.0\r\n");
+		fputs($fp, 'Host: '.$target['host']."\r\n");
+		fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
+		fputs($fp, 'Content-length: '.strlen($data)."\r\n");
+		fputs($fp, "Connection: close\r\n\r\n");
+		fputs($fp, $data);
+
+		// Was it successful?
+
+		$this->response = '';
+		while ( ! feof($fp))
+		{
+			$this->response .= fgets($fp, 128);
+		}
+		@fclose($fp);
+
+		if (stripos($this->response, '<error>0</error>') === FALSE)
+		{
+			$message = preg_match('/<message>(.*?)<\/message>/is', $this->response, $match)
+				? trim($match[1])
+				: 'An unknown error was encountered';
+			$this->set_error($message);
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Extract Trackback URLs
+	 *
+	 * This function lets multiple trackbacks be sent.
+	 * It takes a string of URLs (separated by comma or
+	 * space) and puts each URL into an array
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function extract_urls($urls)
+	{
+		// Remove the pesky white space and replace with a comma, then replace doubles.
+		$urls = str_replace(',,', ',', preg_replace('/\s*(\S+)\s*/', '\\1,', $urls));
+
+		// Break into an array via commas and remove duplicates
+		$urls = array_unique(preg_split('/[,]/', rtrim($urls, ',')));
+
+		array_walk($urls, array($this, 'validate_url'));
+		return $urls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate URL
+	 *
+	 * Simply adds "http://" if missing
+	 *
+	 * @param	string
+	 * @return	void
+	 */
+	public function validate_url(&$url)
+	{
+		$url = trim($url);
+
+		if (stripos($url, 'http') !== 0)
+		{
+			$url = 'http://'.$url;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Find the Trackback URL's ID
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function get_id($url)
+	{
+		$tb_id = '';
+
+		if (strpos($url, '?') !== FALSE)
+		{
+			$tb_array = explode('/', $url);
+			$tb_end   = $tb_array[count($tb_array)-1];
+
+			if ( ! is_numeric($tb_end))
+			{
+				$tb_end  = $tb_array[count($tb_array)-2];
+			}
+
+			$tb_array = explode('=', $tb_end);
+			$tb_id	= $tb_array[count($tb_array)-1];
+		}
+		else
+		{
+			$url = rtrim($url, '/');
+
+			$tb_array = explode('/', $url);
+			$tb_id	= $tb_array[count($tb_array)-1];
+
+			if ( ! is_numeric($tb_id))
+			{
+				$tb_id = $tb_array[count($tb_array)-2];
+			}
+		}
+
+		return ctype_digit((string) $tb_id) ? $tb_id : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Convert Reserved XML characters to Entities
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function convert_xml($str)
+	{
+		$temp = '__TEMP_AMPERSANDS__';
+
+		$str = preg_replace(array('/&#(\d+);/', '/&(\w+);/'), $temp.'\\1;', $str);
+
+		$str = str_replace(array('&', '<', '>', '"', "'", '-'),
+					array('&amp;', '&lt;', '&gt;', '&quot;', '&#39;', '&#45;'),
+					$str);
+
+		return preg_replace(array('/'.$temp.'(\d+);/', '/'.$temp.'(\w+);/'), array('&#\\1;', '&\\1;'), $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Character limiter
+	 *
+	 * Limits the string based on the character count. Will preserve complete words.
+	 *
+	 * @param	string
+	 * @param	int
+	 * @param	string
+	 * @return	string
+	 */
+	public function limit_characters($str, $n = 500, $end_char = '&#8230;')
+	{
+		if (strlen($str) < $n)
+		{
+			return $str;
+		}
+
+		$str = preg_replace('/\s+/', ' ', str_replace(array("\r\n", "\r", "\n"), ' ', $str));
+
+		if (strlen($str) <= $n)
+		{
+			return $str;
+		}
+
+		$out = '';
+		foreach (explode(' ', trim($str)) as $val)
+		{
+			$out .= $val.' ';
+			if (strlen($out) >= $n)
+			{
+				return rtrim($out).$end_char;
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * High ASCII to Entities
+	 *
+	 * Converts Hight ascii text and MS Word special chars
+	 * to character entities
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function convert_ascii($str)
+	{
+		$count	= 1;
+		$out	= '';
+		$temp	= array();
+
+		for ($i = 0, $s = strlen($str); $i < $s; $i++)
+		{
+			$ordinal = ord($str[$i]);
+
+			if ($ordinal < 128)
+			{
+				$out .= $str[$i];
+			}
+			else
+			{
+				if (count($temp) === 0)
+				{
+					$count = ($ordinal < 224) ? 2 : 3;
+				}
+
+				$temp[] = $ordinal;
+
+				if (count($temp) === $count)
+				{
+					$number = ($count === 3)
+						? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64)
+						: (($temp[0] % 32) * 64) + ($temp[1] % 64);
+
+					$out .= '&#'.$number.';';
+					$count = 1;
+					$temp = array();
+				}
+			}
+		}
+
+		return $out;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set error message
+	 *
+	 * @param	string
+	 * @return	void
+	 */
+	public function set_error($msg)
+	{
+		log_message('error', $msg);
+		$this->error_msg[] = $msg;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show error messages
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	public function display_errors($open = '<p>', $close = '</p>')
+	{
+		return (count($this->error_msg) > 0) ? $open.implode($close.$open, $this->error_msg).$close : '';
+	}
+
+}
diff --git a/system/libraries/Typography.php b/system/libraries/Typography.php
new file mode 100644
index 00000000..d919d484
--- /dev/null
+++ b/system/libraries/Typography.php
@@ -0,0 +1,424 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Typography Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/typography.html
+ */
+class CI_Typography {
+
+	/**
+	 * Block level elements that should not be wrapped inside <p> tags
+	 *
+	 * @var string
+	 */
+	public $block_elements = 'address|blockquote|div|dl|fieldset|form|h\d|hr|noscript|object|ol|p|pre|script|table|ul';
+
+	/**
+	 * Elements that should not have <p> and <br /> tags within them.
+	 *
+	 * @var string
+	 */
+	public $skip_elements	= 'p|pre|ol|ul|dl|object|table|h\d';
+
+	/**
+	 * Tags we want the parser to completely ignore when splitting the string.
+	 *
+	 * @var string
+	 */
+	public $inline_elements = 'a|abbr|acronym|b|bdo|big|br|button|cite|code|del|dfn|em|i|img|ins|input|label|map|kbd|q|samp|select|small|span|strong|sub|sup|textarea|tt|var';
+
+	/**
+	 * array of block level elements that require inner content to be within another block level element
+	 *
+	 * @var array
+	 */
+	public $inner_block_required = array('blockquote');
+
+	/**
+	 * the last block element parsed
+	 *
+	 * @var string
+	 */
+	public $last_block_element = '';
+
+	/**
+	 * whether or not to protect quotes within { curly braces }
+	 *
+	 * @var bool
+	 */
+	public $protect_braced_quotes = FALSE;
+
+	/**
+	 * Auto Typography
+	 *
+	 * This function converts text, making it typographically correct:
+	 *	- Converts double spaces into paragraphs.
+	 *	- Converts single line breaks into <br /> tags
+	 *	- Converts single and double quotes into correctly facing curly quote entities.
+	 *	- Converts three dots into ellipsis.
+	 *	- Converts double dashes into em-dashes.
+	 *  - Converts two spaces into entities
+	 *
+	 * @param	string
+	 * @param	bool	whether to reduce more then two consecutive newlines to two
+	 * @return	string
+	 */
+	public function auto_typography($str, $reduce_linebreaks = FALSE)
+	{
+		if ($str === '')
+		{
+			return '';
+		}
+
+		// Standardize Newlines to make matching easier
+		if (strpos($str, "\r") !== FALSE)
+		{
+			$str = str_replace(array("\r\n", "\r"), "\n", $str);
+		}
+
+		// Reduce line breaks.  If there are more than two consecutive linebreaks
+		// we'll compress them down to a maximum of two since there's no benefit to more.
+		if ($reduce_linebreaks === TRUE)
+		{
+			$str = preg_replace("/\n\n+/", "\n\n", $str);
+		}
+
+		// HTML comment tags don't conform to patterns of normal tags, so pull them out separately, only if needed
+		$html_comments = array();
+		if (strpos($str, '<!--') !== FALSE && preg_match_all('#(<!\-\-.*?\-\->)#s', $str, $matches))
+		{
+			for ($i = 0, $total = count($matches[0]); $i < $total; $i++)
+			{
+				$html_comments[] = $matches[0][$i];
+				$str = str_replace($matches[0][$i], '{@HC'.$i.'}', $str);
+			}
+		}
+
+		// match and yank <pre> tags if they exist.  It's cheaper to do this separately since most content will
+		// not contain <pre> tags, and it keeps the PCRE patterns below simpler and faster
+		if (strpos($str, '<pre') !== FALSE)
+		{
+			$str = preg_replace_callback('#<pre.*?>.*?</pre>#si', array($this, '_protect_characters'), $str);
+		}
+
+		// Convert quotes within tags to temporary markers.
+		$str = preg_replace_callback('#<.+?>#si', array($this, '_protect_characters'), $str);
+
+		// Do the same with braces if necessary
+		if ($this->protect_braced_quotes === TRUE)
+		{
+			$str = preg_replace_callback('#\{.+?\}#si', array($this, '_protect_characters'), $str);
+		}
+
+		// Convert "ignore" tags to temporary marker.  The parser splits out the string at every tag
+		// it encounters.  Certain inline tags, like image tags, links, span tags, etc. will be
+		// adversely affected if they are split out so we'll convert the opening bracket < temporarily to: {@TAG}
+		$str = preg_replace('#<(/*)('.$this->inline_elements.')([ >])#i', '{@TAG}\\1\\2\\3', $str);
+
+		/* Split the string at every tag. This expression creates an array with this prototype:
+		 *
+		 *	[array]
+		 *	{
+		 *		[0] = <opening tag>
+		 *		[1] = Content...
+		 *		[2] = <closing tag>
+		 *		Etc...
+		 *	}
+		 */
+		$chunks = preg_split('/(<(?:[^<>]+(?:"[^"]*"|\'[^\']*\')?)+>)/', $str, -1, PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_NO_EMPTY);
+
+		// Build our finalized string.  We cycle through the array, skipping tags, and processing the contained text
+		$str = '';
+		$process = TRUE;
+
+		for ($i = 0, $c = count($chunks) - 1; $i <= $c; $i++)
+		{
+			// Are we dealing with a tag? If so, we'll skip the processing for this cycle.
+			// Well also set the "process" flag which allows us to skip <pre> tags and a few other things.
+			if (preg_match('#<(/*)('.$this->block_elements.').*?>#', $chunks[$i], $match))
+			{
+				if (preg_match('#'.$this->skip_elements.'#', $match[2]))
+				{
+					$process = ($match[1] === '/');
+				}
+
+				if ($match[1] === '')
+				{
+					$this->last_block_element = $match[2];
+				}
+
+				$str .= $chunks[$i];
+				continue;
+			}
+
+			if ($process === FALSE)
+			{
+				$str .= $chunks[$i];
+				continue;
+			}
+
+			//  Force a newline to make sure end tags get processed by _format_newlines()
+			if ($i === $c)
+			{
+				$chunks[$i] .= "\n";
+			}
+
+			//  Convert Newlines into <p> and <br /> tags
+			$str .= $this->_format_newlines($chunks[$i]);
+		}
+
+		// No opening block level tag? Add it if needed.
+		if ( ! preg_match('/^\s*<(?:'.$this->block_elements.')/i', $str))
+		{
+			$str = preg_replace('/^(.*?)<('.$this->block_elements.')/i', '<p>$1</p><$2', $str);
+		}
+
+		// Convert quotes, elipsis, em-dashes, non-breaking spaces, and ampersands
+		$str = $this->format_characters($str);
+
+		// restore HTML comments
+		for ($i = 0, $total = count($html_comments); $i < $total; $i++)
+		{
+			// remove surrounding paragraph tags, but only if there's an opening paragraph tag
+			// otherwise HTML comments at the ends of paragraphs will have the closing tag removed
+			// if '<p>{@HC1}' then replace <p>{@HC1}</p> with the comment, else replace only {@HC1} with the comment
+			$str = preg_replace('#(?(?=<p>\{@HC'.$i.'\})<p>\{@HC'.$i.'\}(\s*</p>)|\{@HC'.$i.'\})#s', $html_comments[$i], $str);
+		}
+
+		// Final clean up
+		$table = array(
+
+						// If the user submitted their own paragraph tags within the text
+						// we will retain them instead of using our tags.
+						'/(<p[^>*?]>)<p>/'	=> '$1', // <?php BBEdit syntax coloring bug fix
+
+						// Reduce multiple instances of opening/closing paragraph tags to a single one
+						'#(</p>)+#'			=> '</p>',
+						'/(<p>\W*<p>)+/'	=> '<p>',
+
+						// Clean up stray paragraph tags that appear before block level elements
+						'#<p></p><('.$this->block_elements.')#'	=> '<$1',
+
+						// Clean up stray non-breaking spaces preceding block elements
+						'#(&nbsp;\s*)+<('.$this->block_elements.')#'	=> '  <$2',
+
+						// Replace the temporary markers we added earlier
+						'/\{@TAG\}/'		=> '<',
+						'/\{@DQ\}/'			=> '"',
+						'/\{@SQ\}/'			=> "'",
+						'/\{@DD\}/'			=> '--',
+						'/\{@NBS\}/'		=> '  ',
+
+						// An unintended consequence of the _format_newlines function is that
+						// some of the newlines get truncated, resulting in <p> tags
+						// starting immediately after <block> tags on the same line.
+						// This forces a newline after such occurrences, which looks much nicer.
+						"/><p>\n/"			=> ">\n<p>",
+
+						// Similarly, there might be cases where a closing </block> will follow
+						// a closing </p> tag, so we'll correct it by adding a newline in between
+						'#</p></#'			=> "</p>\n</"
+						);
+
+		// Do we need to reduce empty lines?
+		if ($reduce_linebreaks === TRUE)
+		{
+			$table['#<p>\n*</p>#'] = '';
+		}
+		else
+		{
+			// If we have empty paragraph tags we add a non-breaking space
+			// otherwise most browsers won't treat them as true paragraphs
+			$table['#<p></p>#'] = '<p>&nbsp;</p>';
+		}
+
+		return preg_replace(array_keys($table), $table, $str);
+
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Format Characters
+	 *
+	 * This function mainly converts double and single quotes
+	 * to curly entities, but it also converts em-dashes,
+	 * double spaces, and ampersands
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function format_characters($str)
+	{
+		static $table;
+
+		if ( ! isset($table))
+		{
+			$table = array(
+							// nested smart quotes, opening and closing
+							// note that rules for grammar (English) allow only for two levels deep
+							// and that single quotes are _supposed_ to always be on the outside
+							// but we'll accommodate both
+							// Note that in all cases, whitespace is the primary determining factor
+							// on which direction to curl, with non-word characters like punctuation
+							// being a secondary factor only after whitespace is addressed.
+							'/\'"(\s|$)/'					=> '&#8217;&#8221;$1',
+							'/(^|\s|<p>)\'"/'				=> '$1&#8216;&#8220;',
+							'/\'"(\W)/'						=> '&#8217;&#8221;$1',
+							'/(\W)\'"/'						=> '$1&#8216;&#8220;',
+							'/"\'(\s|$)/'					=> '&#8221;&#8217;$1',
+							'/(^|\s|<p>)"\'/'				=> '$1&#8220;&#8216;',
+							'/"\'(\W)/'						=> '&#8221;&#8217;$1',
+							'/(\W)"\'/'						=> '$1&#8220;&#8216;',
+
+							// single quote smart quotes
+							'/\'(\s|$)/'					=> '&#8217;$1',
+							'/(^|\s|<p>)\'/'				=> '$1&#8216;',
+							'/\'(\W)/'						=> '&#8217;$1',
+							'/(\W)\'/'						=> '$1&#8216;',
+
+							// double quote smart quotes
+							'/"(\s|$)/'						=> '&#8221;$1',
+							'/(^|\s|<p>)"/'					=> '$1&#8220;',
+							'/"(\W)/'						=> '&#8221;$1',
+							'/(\W)"/'						=> '$1&#8220;',
+
+							// apostrophes
+							"/(\w)'(\w)/"					=> '$1&#8217;$2',
+
+							// Em dash and ellipses dots
+							'/\s?\-\-\s?/'					=> '&#8212;',
+							'/(\w)\.{3}/'					=> '$1&#8230;',
+
+							// double space after sentences
+							'/(\W)  /'						=> '$1&nbsp; ',
+
+							// ampersands, if not a character entity
+							'/&(?!#?[a-zA-Z0-9]{2,};)/'		=> '&amp;'
+						);
+		}
+
+		return preg_replace(array_keys($table), $table, $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Format Newlines
+	 *
+	 * Converts newline characters into either <p> tags or <br />
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _format_newlines($str)
+	{
+		if ($str === '' OR (strpos($str, "\n") === FALSE && ! in_array($this->last_block_element, $this->inner_block_required)))
+		{
+			return $str;
+		}
+
+		// Convert two consecutive newlines to paragraphs
+		$str = str_replace("\n\n", "</p>\n\n<p>", $str);
+
+		// Convert single spaces to <br /> tags
+		$str = preg_replace("/([^\n])(\n)([^\n])/", '\\1<br />\\2\\3', $str);
+
+		// Wrap the whole enchilada in enclosing paragraphs
+		if ($str !== "\n")
+		{
+			// We trim off the right-side new line so that the closing </p> tag
+			// will be positioned immediately following the string, matching
+			// the behavior of the opening <p> tag
+			$str =  '<p>'.rtrim($str).'</p>';
+		}
+
+		// Remove empty paragraphs if they are on the first line, as this
+		// is a potential unintended consequence of the previous code
+		return preg_replace('/<p><\/p>(.*)/', '\\1', $str, 1);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Protect Characters
+	 *
+	 * Protects special characters from being formatted later
+	 * We don't want quotes converted within tags so we'll temporarily convert them to {@DQ} and {@SQ}
+	 * and we don't want double dashes converted to emdash entities, so they are marked with {@DD}
+	 * likewise double spaces are converted to {@NBS} to prevent entity conversion
+	 *
+	 * @param	array
+	 * @return	string
+	 */
+	protected function _protect_characters($match)
+	{
+		return str_replace(array("'",'"','--','  '), array('{@SQ}', '{@DQ}', '{@DD}', '{@NBS}'), $match[0]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Convert newlines to HTML line breaks except within PRE tags
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function nl2br_except_pre($str)
+	{
+		$newstr = '';
+		for ($ex = explode('pre>', $str), $ct = count($ex), $i = 0; $i < $ct; $i++)
+		{
+			$newstr .= (($i % 2) === 0) ? nl2br($ex[$i]) : $ex[$i];
+			if ($ct - 1 !== $i)
+			{
+				$newstr .= 'pre>';
+			}
+		}
+
+		return $newstr;
+	}
+
+}
diff --git a/system/libraries/Unit_test.php b/system/libraries/Unit_test.php
new file mode 100644
index 00000000..55e3bfcb
--- /dev/null
+++ b/system/libraries/Unit_test.php
@@ -0,0 +1,406 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.1
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Unit Testing Class
+ *
+ * Simple testing class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	UnitTesting
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/unit_testing.html
+ */
+class CI_Unit_test {
+
+	/**
+	 * Active flag
+	 *
+	 * @var	bool
+	 */
+	public $active = TRUE;
+
+	/**
+	 * Test results
+	 *
+	 * @var	array
+	 */
+	public $results = array();
+
+	/**
+	 * Strict comparison flag
+	 *
+	 * Whether to use === or == when comparing
+	 *
+	 * @var	bool
+	 */
+	public $strict = FALSE;
+
+	/**
+	 * Template
+	 *
+	 * @var	string
+	 */
+	protected $_template = NULL;
+
+	/**
+	 * Template rows
+	 *
+	 * @var	string
+	 */
+	protected $_template_rows = NULL;
+
+	/**
+	 * List of visible test items
+	 *
+	 * @var	array
+	 */
+	protected $_test_items_visible	= array(
+		'test_name',
+		'test_datatype',
+		'res_datatype',
+		'result',
+		'file',
+		'line',
+		'notes'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		log_message('info', 'Unit Testing Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Run the tests
+	 *
+	 * Runs the supplied tests
+	 *
+	 * @param	array	$items
+	 * @return	void
+	 */
+	public function set_test_items($items)
+	{
+		if ( ! empty($items) && is_array($items))
+		{
+			$this->_test_items_visible = $items;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Run the tests
+	 *
+	 * Runs the supplied tests
+	 *
+	 * @param	mixed	$test
+	 * @param	mixed	$expected
+	 * @param	string	$test_name
+	 * @param	string	$notes
+	 * @return	string
+	 */
+	public function run($test, $expected = TRUE, $test_name = 'undefined', $notes = '')
+	{
+		if ($this->active === FALSE)
+		{
+			return FALSE;
+		}
+
+		if (in_array($expected, array('is_object', 'is_string', 'is_bool', 'is_true', 'is_false', 'is_int', 'is_numeric', 'is_float', 'is_double', 'is_array', 'is_null', 'is_resource'), TRUE))
+		{
+			$result = $expected($test);
+			$extype = str_replace(array('true', 'false'), 'bool', str_replace('is_', '', $expected));
+		}
+		else
+		{
+			$result = ($this->strict === TRUE) ? ($test === $expected) : ($test == $expected);
+			$extype = gettype($expected);
+		}
+
+		$back = $this->_backtrace();
+
+		$report = array (
+			'test_name'     => $test_name,
+			'test_datatype' => gettype($test),
+			'res_datatype'  => $extype,
+			'result'        => ($result === TRUE) ? 'passed' : 'failed',
+			'file'          => $back['file'],
+			'line'          => $back['line'],
+			'notes'         => $notes
+		);
+
+		$this->results[] = $report;
+
+		return $this->report($this->result(array($report)));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate a report
+	 *
+	 * Displays a table with the test data
+	 *
+	 * @param	array	 $result
+	 * @return	string
+	 */
+	public function report($result = array())
+	{
+		if (count($result) === 0)
+		{
+			$result = $this->result();
+		}
+
+		$CI =& get_instance();
+		$CI->load->language('unit_test');
+
+		$this->_parse_template();
+
+		$r = '';
+		foreach ($result as $res)
+		{
+			$table = '';
+
+			foreach ($res as $key => $val)
+			{
+				if ($key === $CI->lang->line('ut_result'))
+				{
+					if ($val === $CI->lang->line('ut_passed'))
+					{
+						$val = '<span style="color: #0C0;">'.$val.'</span>';
+					}
+					elseif ($val === $CI->lang->line('ut_failed'))
+					{
+						$val = '<span style="color: #C00;">'.$val.'</span>';
+					}
+				}
+
+				$table .= str_replace(array('{item}', '{result}'), array($key, $val), $this->_template_rows);
+			}
+
+			$r .= str_replace('{rows}', $table, $this->_template);
+		}
+
+		return $r;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Use strict comparison
+	 *
+	 * Causes the evaluation to use === rather than ==
+	 *
+	 * @param	bool	$state
+	 * @return	void
+	 */
+	public function use_strict($state = TRUE)
+	{
+		$this->strict = (bool) $state;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Make Unit testing active
+	 *
+	 * Enables/disables unit testing
+	 *
+	 * @param	bool
+	 * @return	void
+	 */
+	public function active($state = TRUE)
+	{
+		$this->active = (bool) $state;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result Array
+	 *
+	 * Returns the raw result data
+	 *
+	 * @param	array	$results
+	 * @return	array
+	 */
+	public function result($results = array())
+	{
+		$CI =& get_instance();
+		$CI->load->language('unit_test');
+
+		if (count($results) === 0)
+		{
+			$results = $this->results;
+		}
+
+		$retval = array();
+		foreach ($results as $result)
+		{
+			$temp = array();
+			foreach ($result as $key => $val)
+			{
+				if ( ! in_array($key, $this->_test_items_visible))
+				{
+					continue;
+				}
+				elseif (in_array($key, array('test_name', 'test_datatype', 'res_datatype', 'result'), TRUE))
+				{
+					if (FALSE !== ($line = $CI->lang->line(strtolower('ut_'.$val), FALSE)))
+					{
+						$val = $line;
+					}
+				}
+
+				$temp[$CI->lang->line('ut_'.$key, FALSE)] = $val;
+			}
+
+			$retval[] = $temp;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the template
+	 *
+	 * This lets us set the template to be used to display results
+	 *
+	 * @param	string
+	 * @return	void
+	 */
+	public function set_template($template)
+	{
+		$this->_template = $template;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate a backtrace
+	 *
+	 * This lets us show file names and line numbers
+	 *
+	 * @return	array
+	 */
+	protected function _backtrace()
+	{
+		$back = debug_backtrace();
+		return array(
+			'file' => (isset($back[1]['file']) ? $back[1]['file'] : ''),
+			'line' => (isset($back[1]['line']) ? $back[1]['line'] : '')
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Default Template
+	 *
+	 * @return	string
+	 */
+	protected function _default_template()
+	{
+		$this->_template = "\n".'<table style="width:100%; font-size:small; margin:10px 0; border-collapse:collapse; border:1px solid #CCC;">{rows}'."\n</table>";
+
+		$this->_template_rows = "\n\t<tr>\n\t\t".'<th style="text-align: left; border-bottom:1px solid #CCC;">{item}</th>'
+					."\n\t\t".'<td style="border-bottom:1px solid #CCC;">{result}</td>'."\n\t</tr>";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse Template
+	 *
+	 * Harvests the data within the template {pseudo-variables}
+	 *
+	 * @return	void
+	 */
+	protected function _parse_template()
+	{
+		if ($this->_template_rows !== NULL)
+		{
+			return;
+		}
+
+		if ($this->_template === NULL OR ! preg_match('/\{rows\}(.*?)\{\/rows\}/si', $this->_template, $match))
+		{
+			$this->_default_template();
+			return;
+		}
+
+		$this->_template_rows = $match[1];
+		$this->_template = str_replace($match[0], '{rows}', $this->_template);
+	}
+
+}
+
+/**
+ * Helper function to test boolean TRUE
+ *
+ * @param	mixed	$test
+ * @return	bool
+ */
+function is_true($test)
+{
+	return ($test === TRUE);
+}
+
+/**
+ * Helper function to test boolean FALSE
+ *
+ * @param	mixed	$test
+ * @return	bool
+ */
+function is_false($test)
+{
+	return ($test === FALSE);
+}
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
new file mode 100644
index 00000000..8d13e440
--- /dev/null
+++ b/system/libraries/Upload.php
@@ -0,0 +1,1324 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * File Uploading Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Uploads
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/file_uploading.html
+ */
+class CI_Upload {
+
+	/**
+	 * Maximum file size
+	 *
+	 * @var	int
+	 */
+	public $max_size = 0;
+
+	/**
+	 * Maximum image width
+	 *
+	 * @var	int
+	 */
+	public $max_width = 0;
+
+	/**
+	 * Maximum image height
+	 *
+	 * @var	int
+	 */
+	public $max_height = 0;
+
+	/**
+	 * Minimum image width
+	 *
+	 * @var	int
+	 */
+	public $min_width = 0;
+
+	/**
+	 * Minimum image height
+	 *
+	 * @var	int
+	 */
+	public $min_height = 0;
+
+	/**
+	 * Maximum filename length
+	 *
+	 * @var	int
+	 */
+	public $max_filename = 0;
+
+	/**
+	 * Maximum duplicate filename increment ID
+	 *
+	 * @var	int
+	 */
+	public $max_filename_increment = 100;
+
+	/**
+	 * Allowed file types
+	 *
+	 * @var	string
+	 */
+	public $allowed_types = '';
+
+	/**
+	 * Temporary filename
+	 *
+	 * @var	string
+	 */
+	public $file_temp = '';
+
+	/**
+	 * Filename
+	 *
+	 * @var	string
+	 */
+	public $file_name = '';
+
+	/**
+	 * Original filename
+	 *
+	 * @var	string
+	 */
+	public $orig_name = '';
+
+	/**
+	 * File type
+	 *
+	 * @var	string
+	 */
+	public $file_type = '';
+
+	/**
+	 * File size
+	 *
+	 * @var	int
+	 */
+	public $file_size = NULL;
+
+	/**
+	 * Filename extension
+	 *
+	 * @var	string
+	 */
+	public $file_ext = '';
+
+	/**
+	 * Force filename extension to lowercase
+	 *
+	 * @var	string
+	 */
+	public $file_ext_tolower = FALSE;
+
+	/**
+	 * Upload path
+	 *
+	 * @var	string
+	 */
+	public $upload_path = '';
+
+	/**
+	 * Overwrite flag
+	 *
+	 * @var	bool
+	 */
+	public $overwrite = FALSE;
+
+	/**
+	 * Obfuscate filename flag
+	 *
+	 * @var	bool
+	 */
+	public $encrypt_name = FALSE;
+
+	/**
+	 * Is image flag
+	 *
+	 * @var	bool
+	 */
+	public $is_image = FALSE;
+
+	/**
+	 * Image width
+	 *
+	 * @var	int
+	 */
+	public $image_width = NULL;
+
+	/**
+	 * Image height
+	 *
+	 * @var	int
+	 */
+	public $image_height = NULL;
+
+	/**
+	 * Image type
+	 *
+	 * @var	string
+	 */
+	public $image_type = '';
+
+	/**
+	 * Image size string
+	 *
+	 * @var	string
+	 */
+	public $image_size_str = '';
+
+	/**
+	 * Error messages list
+	 *
+	 * @var	array
+	 */
+	public $error_msg = array();
+
+	/**
+	 * Remove spaces flag
+	 *
+	 * @var	bool
+	 */
+	public $remove_spaces = TRUE;
+
+	/**
+	 * MIME detection flag
+	 *
+	 * @var	bool
+	 */
+	public $detect_mime = TRUE;
+
+	/**
+	 * XSS filter flag
+	 *
+	 * @var	bool
+	 */
+	public $xss_clean = FALSE;
+
+	/**
+	 * Apache mod_mime fix flag
+	 *
+	 * @var	bool
+	 */
+	public $mod_mime_fix = TRUE;
+
+	/**
+	 * Temporary filename prefix
+	 *
+	 * @var	string
+	 */
+	public $temp_prefix = 'temp_file_';
+
+	/**
+	 * Filename sent by the client
+	 *
+	 * @var	bool
+	 */
+	public $client_name = '';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Filename override
+	 *
+	 * @var	string
+	 */
+	protected $_file_name_override = '';
+
+	/**
+	 * MIME types list
+	 *
+	 * @var	array
+	 */
+	protected $_mimes = array();
+
+	/**
+	 * CI Singleton
+	 *
+	 * @var	object
+	 */
+	protected $_CI;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		empty($config) OR $this->initialize($config, FALSE);
+
+		$this->_mimes =& get_mimes();
+		$this->_CI =& get_instance();
+
+		log_message('info', 'Upload Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize preferences
+	 *
+	 * @param	array	$config
+	 * @param	bool	$reset
+	 * @return	CI_Upload
+	 */
+	public function initialize(array $config = array(), $reset = TRUE)
+	{
+		$reflection = new ReflectionClass($this);
+
+		if ($reset === TRUE)
+		{
+			$defaults = $reflection->getDefaultProperties();
+			foreach (array_keys($defaults) as $key)
+			{
+				if ($key[0] === '_')
+				{
+					continue;
+				}
+
+				if (isset($config[$key]))
+				{
+					if ($reflection->hasMethod('set_'.$key))
+					{
+						$this->{'set_'.$key}($config[$key]);
+					}
+					else
+					{
+						$this->$key = $config[$key];
+					}
+				}
+				else
+				{
+					$this->$key = $defaults[$key];
+				}
+			}
+		}
+		else
+		{
+			foreach ($config as $key => &$value)
+			{
+				if ($key[0] !== '_' && $reflection->hasProperty($key))
+				{
+					if ($reflection->hasMethod('set_'.$key))
+					{
+						$this->{'set_'.$key}($value);
+					}
+					else
+					{
+						$this->$key = $value;
+					}
+				}
+			}
+		}
+
+		// if a file_name was provided in the config, use it instead of the user input
+		// supplied file name for all uploads until initialized again
+		$this->_file_name_override = $this->file_name;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Perform the file upload
+	 *
+	 * @param	string	$field
+	 * @return	bool
+	 */
+	public function do_upload($field = 'userfile')
+	{
+		// Is $_FILES[$field] set? If not, no reason to continue.
+		if (isset($_FILES[$field]))
+		{
+			$_file = $_FILES[$field];
+		}
+		// Does the field name contain array notation?
+		elseif (($c = preg_match_all('/(?:^[^\[]+)|\[[^]]*\]/', $field, $matches)) > 1)
+		{
+			$_file = $_FILES;
+			for ($i = 0; $i < $c; $i++)
+			{
+				// We can't track numeric iterations, only full field names are accepted
+				if (($field = trim($matches[0][$i], '[]')) === '' OR ! isset($_file[$field]))
+				{
+					$_file = NULL;
+					break;
+				}
+
+				$_file = $_file[$field];
+			}
+		}
+
+		if ( ! isset($_file))
+		{
+			$this->set_error('upload_no_file_selected', 'debug');
+			return FALSE;
+		}
+
+		// Is the upload path valid?
+		if ( ! $this->validate_upload_path())
+		{
+			// errors will already be set by validate_upload_path() so just return FALSE
+			return FALSE;
+		}
+
+		// Was the file able to be uploaded? If not, determine the reason why.
+		if ( ! is_uploaded_file($_file['tmp_name']))
+		{
+			$error = isset($_file['error']) ? $_file['error'] : 4;
+
+			switch ($error)
+			{
+				case UPLOAD_ERR_INI_SIZE:
+					$this->set_error('upload_file_exceeds_limit', 'info');
+					break;
+				case UPLOAD_ERR_FORM_SIZE:
+					$this->set_error('upload_file_exceeds_form_limit', 'info');
+					break;
+				case UPLOAD_ERR_PARTIAL:
+					$this->set_error('upload_file_partial', 'debug');
+					break;
+				case UPLOAD_ERR_NO_FILE:
+					$this->set_error('upload_no_file_selected', 'debug');
+					break;
+				case UPLOAD_ERR_NO_TMP_DIR:
+					$this->set_error('upload_no_temp_directory', 'error');
+					break;
+				case UPLOAD_ERR_CANT_WRITE:
+					$this->set_error('upload_unable_to_write_file', 'error');
+					break;
+				case UPLOAD_ERR_EXTENSION:
+					$this->set_error('upload_stopped_by_extension', 'debug');
+					break;
+				default:
+					$this->set_error('upload_no_file_selected', 'debug');
+					break;
+			}
+
+			return FALSE;
+		}
+
+		// Set the uploaded data as class variables
+		$this->file_temp = $_file['tmp_name'];
+		$this->file_size = $_file['size'];
+
+		// Skip MIME type detection?
+		if ($this->detect_mime !== FALSE)
+		{
+			$this->_file_mime_type($_file);
+		}
+
+		$this->file_type = preg_replace('/^(.+?);.*$/', '\\1', $this->file_type);
+		$this->file_type = strtolower(trim(stripslashes($this->file_type), '"'));
+		$this->file_name = $this->_prep_filename($_file['name']);
+		$this->file_ext	 = $this->get_extension($this->file_name);
+		$this->client_name = $this->file_name;
+
+		// Is the file type allowed to be uploaded?
+		if ( ! $this->is_allowed_filetype())
+		{
+			$this->set_error('upload_invalid_filetype', 'debug');
+			return FALSE;
+		}
+
+		// if we're overriding, let's now make sure the new name and type is allowed
+		if ($this->_file_name_override !== '')
+		{
+			$this->file_name = $this->_prep_filename($this->_file_name_override);
+
+			// If no extension was provided in the file_name config item, use the uploaded one
+			if (strpos($this->_file_name_override, '.') === FALSE)
+			{
+				$this->file_name .= $this->file_ext;
+			}
+			else
+			{
+				// An extension was provided, let's have it!
+				$this->file_ext	= $this->get_extension($this->_file_name_override);
+			}
+
+			if ( ! $this->is_allowed_filetype(TRUE))
+			{
+				$this->set_error('upload_invalid_filetype', 'debug');
+				return FALSE;
+			}
+		}
+
+		// Convert the file size to kilobytes
+		if ($this->file_size > 0)
+		{
+			$this->file_size = round($this->file_size/1024, 2);
+		}
+
+		// Is the file size within the allowed maximum?
+		if ( ! $this->is_allowed_filesize())
+		{
+			$this->set_error('upload_invalid_filesize', 'info');
+			return FALSE;
+		}
+
+		// Are the image dimensions within the allowed size?
+		// Note: This can fail if the server has an open_basedir restriction.
+		if ( ! $this->is_allowed_dimensions())
+		{
+			$this->set_error('upload_invalid_dimensions', 'info');
+			return FALSE;
+		}
+
+		// Sanitize the file name for security
+		$this->file_name = $this->_CI->security->sanitize_filename($this->file_name);
+
+		// Truncate the file name if it's too long
+		if ($this->max_filename > 0)
+		{
+			$this->file_name = $this->limit_filename_length($this->file_name, $this->max_filename);
+		}
+
+		// Remove white spaces in the name
+		if ($this->remove_spaces === TRUE)
+		{
+			$this->file_name = preg_replace('/\s+/', '_', $this->file_name);
+		}
+
+		if ($this->file_ext_tolower && ($ext_length = strlen($this->file_ext)))
+		{
+			// file_ext was previously lower-cased by a get_extension() call
+			$this->file_name = substr($this->file_name, 0, -$ext_length).$this->file_ext;
+		}
+
+		/*
+		 * Validate the file name
+		 * This function appends an number onto the end of
+		 * the file if one with the same name already exists.
+		 * If it returns false there was a problem.
+		 */
+		$this->orig_name = $this->file_name;
+		if (FALSE === ($this->file_name = $this->set_filename($this->upload_path, $this->file_name)))
+		{
+			return FALSE;
+		}
+
+		/*
+		 * Run the file through the XSS hacking filter
+		 * This helps prevent malicious code from being
+		 * embedded within a file. Scripts can easily
+		 * be disguised as images or other file types.
+		 */
+		if ($this->xss_clean && $this->do_xss_clean() === FALSE)
+		{
+			$this->set_error('upload_unable_to_write_file', 'error');
+			return FALSE;
+		}
+
+		/*
+		 * Move the file to the final destination
+		 * To deal with different server configurations
+		 * we'll attempt to use copy() first. If that fails
+		 * we'll use move_uploaded_file(). One of the two should
+		 * reliably work in most environments
+		 */
+		if ( ! @copy($this->file_temp, $this->upload_path.$this->file_name))
+		{
+			if ( ! @move_uploaded_file($this->file_temp, $this->upload_path.$this->file_name))
+			{
+				$this->set_error('upload_destination_error', 'error');
+				return FALSE;
+			}
+		}
+
+		/*
+		 * Set the finalized image dimensions
+		 * This sets the image width/height (assuming the
+		 * file was an image). We use this information
+		 * in the "data" function.
+		 */
+		$this->set_image_properties($this->upload_path.$this->file_name);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Finalized Data Array
+	 *
+	 * Returns an associative array containing all of the information
+	 * related to the upload, allowing the developer easy access in one array.
+	 *
+	 * @param	string	$index
+	 * @return	mixed
+	 */
+	public function data($index = NULL)
+	{
+		$data = array(
+				'file_name'		=> $this->file_name,
+				'file_type'		=> $this->file_type,
+				'file_path'		=> $this->upload_path,
+				'full_path'		=> $this->upload_path.$this->file_name,
+				'raw_name'		=> substr($this->file_name, 0, -strlen($this->file_ext)),
+				'orig_name'		=> $this->orig_name,
+				'client_name'		=> $this->client_name,
+				'file_ext'		=> $this->file_ext,
+				'file_size'		=> $this->file_size,
+				'is_image'		=> $this->is_image(),
+				'image_width'		=> $this->image_width,
+				'image_height'		=> $this->image_height,
+				'image_type'		=> $this->image_type,
+				'image_size_str'	=> $this->image_size_str,
+			);
+
+		if ( ! empty($index))
+		{
+			return isset($data[$index]) ? $data[$index] : NULL;
+		}
+
+		return $data;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Upload Path
+	 *
+	 * @param	string	$path
+	 * @return	CI_Upload
+	 */
+	public function set_upload_path($path)
+	{
+		// Make sure it has a trailing slash
+		$this->upload_path = rtrim($path, '/').'/';
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the file name
+	 *
+	 * This function takes a filename/path as input and looks for the
+	 * existence of a file with the same name. If found, it will append a
+	 * number to the end of the filename to avoid overwriting a pre-existing file.
+	 *
+	 * @param	string	$path
+	 * @param	string	$filename
+	 * @return	string
+	 */
+	public function set_filename($path, $filename)
+	{
+		if ($this->encrypt_name === TRUE)
+		{
+			$filename = md5(uniqid(mt_rand())).$this->file_ext;
+		}
+
+		if ($this->overwrite === TRUE OR ! file_exists($path.$filename))
+		{
+			return $filename;
+		}
+
+		$filename = str_replace($this->file_ext, '', $filename);
+
+		$new_filename = '';
+		for ($i = 1; $i < $this->max_filename_increment; $i++)
+		{
+			if ( ! file_exists($path.$filename.$i.$this->file_ext))
+			{
+				$new_filename = $filename.$i.$this->file_ext;
+				break;
+			}
+		}
+
+		if ($new_filename === '')
+		{
+			$this->set_error('upload_bad_filename', 'debug');
+			return FALSE;
+		}
+
+		return $new_filename;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Maximum File Size
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	public function set_max_filesize($n)
+	{
+		$this->max_size = ($n < 0) ? 0 : (int) $n;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Maximum File Size
+	 *
+	 * An internal alias to set_max_filesize() to help with configuration
+	 * as initialize() will look for a set_<property_name>() method ...
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	protected function set_max_size($n)
+	{
+		return $this->set_max_filesize($n);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Maximum File Name Length
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	public function set_max_filename($n)
+	{
+		$this->max_filename = ($n < 0) ? 0 : (int) $n;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Maximum Image Width
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	public function set_max_width($n)
+	{
+		$this->max_width = ($n < 0) ? 0 : (int) $n;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Maximum Image Height
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	public function set_max_height($n)
+	{
+		$this->max_height = ($n < 0) ? 0 : (int) $n;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set minimum image width
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	public function set_min_width($n)
+	{
+		$this->min_width = ($n < 0) ? 0 : (int) $n;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set minimum image height
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	public function set_min_height($n)
+	{
+		$this->min_height = ($n < 0) ? 0 : (int) $n;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Allowed File Types
+	 *
+	 * @param	mixed	$types
+	 * @return	CI_Upload
+	 */
+	public function set_allowed_types($types)
+	{
+		$this->allowed_types = (is_array($types) OR $types === '*')
+			? $types
+			: explode('|', $types);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Image Properties
+	 *
+	 * Uses GD to determine the width/height/type of image
+	 *
+	 * @param	string	$path
+	 * @return	CI_Upload
+	 */
+	public function set_image_properties($path = '')
+	{
+		if ($this->is_image() && function_exists('getimagesize'))
+		{
+			if (FALSE !== ($D = @getimagesize($path)))
+			{
+				$types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png');
+
+				$this->image_width	= $D[0];
+				$this->image_height	= $D[1];
+				$this->image_type	= isset($types[$D[2]]) ? $types[$D[2]] : 'unknown';
+				$this->image_size_str	= $D[3]; // string containing height and width
+			}
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set XSS Clean
+	 *
+	 * Enables the XSS flag so that the file that was uploaded
+	 * will be run through the XSS filter.
+	 *
+	 * @param	bool	$flag
+	 * @return	CI_Upload
+	 */
+	public function set_xss_clean($flag = FALSE)
+	{
+		$this->xss_clean = ($flag === TRUE);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate the image
+	 *
+	 * @return	bool
+	 */
+	public function is_image()
+	{
+		// IE will sometimes return odd mime-types during upload, so here we just standardize all
+		// jpegs or pngs to the same file type.
+
+		$png_mimes  = array('image/x-png');
+		$jpeg_mimes = array('image/jpg', 'image/jpe', 'image/jpeg', 'image/pjpeg');
+
+		if (in_array($this->file_type, $png_mimes))
+		{
+			$this->file_type = 'image/png';
+		}
+		elseif (in_array($this->file_type, $jpeg_mimes))
+		{
+			$this->file_type = 'image/jpeg';
+		}
+
+		$img_mimes = array('image/gif',	'image/jpeg', 'image/png', 'image/webp');
+
+		return in_array($this->file_type, $img_mimes, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Verify that the filetype is allowed
+	 *
+	 * @param	bool	$ignore_mime
+	 * @return	bool
+	 */
+	public function is_allowed_filetype($ignore_mime = FALSE)
+	{
+		if ($this->allowed_types === '*')
+		{
+			return TRUE;
+		}
+
+		if (empty($this->allowed_types) OR ! is_array($this->allowed_types))
+		{
+			$this->set_error('upload_no_file_types', 'debug');
+			return FALSE;
+		}
+
+		$ext = strtolower(ltrim($this->file_ext, '.'));
+
+		if ( ! in_array($ext, $this->allowed_types, TRUE))
+		{
+			return FALSE;
+		}
+
+		// Images get some additional checks
+		if (in_array($ext, array('gif', 'jpg', 'jpeg', 'jpe', 'png', 'webp'), TRUE) && @getimagesize($this->file_temp) === FALSE)
+		{
+			return FALSE;
+		}
+
+		if ($ignore_mime === TRUE)
+		{
+			return TRUE;
+		}
+
+		if (isset($this->_mimes[$ext]))
+		{
+			return is_array($this->_mimes[$ext])
+				? in_array($this->file_type, $this->_mimes[$ext], TRUE)
+				: ($this->_mimes[$ext] === $this->file_type);
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Verify that the file is within the allowed size
+	 *
+	 * @return	bool
+	 */
+	public function is_allowed_filesize()
+	{
+		return ($this->max_size === 0 OR $this->max_size > $this->file_size);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Verify that the image is within the allowed width/height
+	 *
+	 * @return	bool
+	 */
+	public function is_allowed_dimensions()
+	{
+		if ( ! $this->is_image())
+		{
+			return TRUE;
+		}
+
+		if (function_exists('getimagesize'))
+		{
+			$D = @getimagesize($this->file_temp);
+
+			if ($this->max_width > 0 && $D[0] > $this->max_width)
+			{
+				return FALSE;
+			}
+
+			if ($this->max_height > 0 && $D[1] > $this->max_height)
+			{
+				return FALSE;
+			}
+
+			if ($this->min_width > 0 && $D[0] < $this->min_width)
+			{
+				return FALSE;
+			}
+
+			if ($this->min_height > 0 && $D[1] < $this->min_height)
+			{
+				return FALSE;
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate Upload Path
+	 *
+	 * Verifies that it is a valid upload path with proper permissions.
+	 *
+	 * @return	bool
+	 */
+	public function validate_upload_path()
+	{
+		if ($this->upload_path === '')
+		{
+			$this->set_error('upload_no_filepath', 'error');
+			return FALSE;
+		}
+
+		if (realpath($this->upload_path) !== FALSE)
+		{
+			$this->upload_path = str_replace('\\', '/', realpath($this->upload_path));
+		}
+
+		if ( ! is_dir($this->upload_path))
+		{
+			$this->set_error('upload_no_filepath', 'error');
+			return FALSE;
+		}
+
+		if ( ! is_really_writable($this->upload_path))
+		{
+			$this->set_error('upload_not_writable', 'error');
+			return FALSE;
+		}
+
+		$this->upload_path = preg_replace('/(.+?)\/*$/', '\\1/',  $this->upload_path);
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Extract the file extension
+	 *
+	 * @param	string	$filename
+	 * @return	string
+	 */
+	public function get_extension($filename)
+	{
+		$x = explode('.', $filename);
+
+		if (count($x) === 1)
+		{
+			return '';
+		}
+
+		$ext = ($this->file_ext_tolower) ? strtolower(end($x)) : end($x);
+		return '.'.$ext;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Limit the File Name Length
+	 *
+	 * @param	string	$filename
+	 * @param	int	$length
+	 * @return	string
+	 */
+	public function limit_filename_length($filename, $length)
+	{
+		if (strlen($filename) < $length)
+		{
+			return $filename;
+		}
+
+		$ext = '';
+		if (strpos($filename, '.') !== FALSE)
+		{
+			$parts		= explode('.', $filename);
+			$ext		= '.'.array_pop($parts);
+			$filename	= implode('.', $parts);
+		}
+
+		return substr($filename, 0, ($length - strlen($ext))).$ext;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Runs the file through the XSS clean function
+	 *
+	 * This prevents people from embedding malicious code in their files.
+	 * I'm not sure that it won't negatively affect certain files in unexpected ways,
+	 * but so far I haven't found that it causes trouble.
+	 *
+	 * @return	string
+	 */
+	public function do_xss_clean()
+	{
+		$file = $this->file_temp;
+
+		if (filesize($file) == 0)
+		{
+			return FALSE;
+		}
+
+		if (memory_get_usage() && ($memory_limit = ini_get('memory_limit')) > 0)
+		{
+			$memory_limit = str_split($memory_limit, strspn($memory_limit, '1234567890'));
+			if ( ! empty($memory_limit[1]))
+			{
+				switch ($memory_limit[1][0])
+				{
+					case 'g':
+					case 'G':
+						$memory_limit[0] *= 1024 * 1024 * 1024;
+						break;
+					case 'm':
+					case 'M':
+						$memory_limit[0] *= 1024 * 1024;
+						break;
+					default:
+						break;
+				}
+			}
+
+			$memory_limit = (int) ceil(filesize($file) + $memory_limit[0]);
+			ini_set('memory_limit', $memory_limit); // When an integer is used, the value is measured in bytes. - PHP.net
+		}
+
+		// If the file being uploaded is an image, then we should have no problem with XSS attacks (in theory), but
+		// IE can be fooled into mime-type detecting a malformed image as an html file, thus executing an XSS attack on anyone
+		// using IE who looks at the image. It does this by inspecting the first 255 bytes of an image. To get around this
+		// CI will itself look at the first 255 bytes of an image to determine its relative safety. This can save a lot of
+		// processor power and time if it is actually a clean image, as it will be in nearly all instances _except_ an
+		// attempted XSS attack.
+
+		if (function_exists('getimagesize') && @getimagesize($file) !== FALSE)
+		{
+			if (($file = @fopen($file, 'rb')) === FALSE) // "b" to force binary
+			{
+				return FALSE; // Couldn't open the file, return FALSE
+			}
+
+			$opening_bytes = fread($file, 256);
+			fclose($file);
+
+			// These are known to throw IE into mime-type detection chaos
+			// <a, <body, <head, <html, <img, <plaintext, <pre, <script, <table, <title
+			// title is basically just in SVG, but we filter it anyhow
+
+			// if it's an image or no "triggers" detected in the first 256 bytes - we're good
+			return ! preg_match('/<(a|body|head|html|img|plaintext|pre|script|table|title)[\s>]/i', $opening_bytes);
+		}
+
+		if (($data = @file_get_contents($file)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		return $this->_CI->security->xss_clean($data, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set an error message
+	 *
+	 * @param	string	$msg
+	 * @return	CI_Upload
+	 */
+	public function set_error($msg, $log_level = 'error')
+	{
+		$this->_CI->lang->load('upload');
+
+		is_array($msg) OR $msg = array($msg);
+		foreach ($msg as $val)
+		{
+			$msg = ($this->_CI->lang->line($val) === FALSE) ? $val : $this->_CI->lang->line($val);
+			$this->error_msg[] = $msg;
+			log_message($log_level, $msg);
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Display the error message
+	 *
+	 * @param	string	$open
+	 * @param	string	$close
+	 * @return	string
+	 */
+	public function display_errors($open = '<p>', $close = '</p>')
+	{
+		return (count($this->error_msg) > 0) ? $open.implode($close.$open, $this->error_msg).$close : '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep Filename
+	 *
+	 * Prevents possible script execution from Apache's handling
+	 * of files' multiple extensions.
+	 *
+	 * @link	https://httpd.apache.org/docs/1.3/mod/mod_mime.html#multipleext
+	 *
+	 * @param	string	$filename
+	 * @return	string
+	 */
+	protected function _prep_filename($filename)
+	{
+		if ($this->mod_mime_fix === FALSE OR $this->allowed_types === '*' OR ($ext_pos = strrpos($filename, '.')) === FALSE)
+		{
+			return $filename;
+		}
+
+		$ext = substr($filename, $ext_pos);
+		$filename = substr($filename, 0, $ext_pos);
+		return str_replace('.', '_', $filename).$ext;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * File MIME type
+	 *
+	 * Detects the (actual) MIME type of the uploaded file, if possible.
+	 * The input array is expected to be $_FILES[$field]
+	 *
+	 * @param	array	$file
+	 * @return	void
+	 */
+	protected function _file_mime_type($file)
+	{
+		// We'll need this to validate the MIME info string (e.g. text/plain; charset=us-ascii)
+		$regexp = '/^([a-z\-]+\/[a-z0-9\-\.\+]+)(;\s.+)?$/';
+
+		/**
+		 * Fileinfo extension - most reliable method
+		 *
+		 * Apparently XAMPP, CentOS, cPanel and who knows what
+		 * other PHP distribution channels EXPLICITLY DISABLE
+		 * ext/fileinfo, which is otherwise enabled by default
+		 * since PHP 5.3 ...
+		 */
+		if (function_exists('finfo_file'))
+		{
+			$finfo = @finfo_open(FILEINFO_MIME);
+			if (is_resource($finfo)) // It is possible that a FALSE value is returned, if there is no magic MIME database file found on the system
+			{
+				$mime = @finfo_file($finfo, $file['tmp_name']);
+				finfo_close($finfo);
+
+				/* According to the comments section of the PHP manual page,
+				 * it is possible that this function returns an empty string
+				 * for some files (e.g. if they don't exist in the magic MIME database)
+				 */
+				if (is_string($mime) && preg_match($regexp, $mime, $matches))
+				{
+					$this->file_type = $matches[1];
+					return;
+				}
+			}
+		}
+
+		/* This is an ugly hack, but UNIX-type systems provide a "native" way to detect the file type,
+		 * which is still more secure than depending on the value of $_FILES[$field]['type'], and as it
+		 * was reported in issue #750 (https://github.com/EllisLab/CodeIgniter/issues/750) - it's better
+		 * than mime_content_type() as well, hence the attempts to try calling the command line with
+		 * three different functions.
+		 *
+		 * Notes:
+		 *	- the DIRECTORY_SEPARATOR comparison ensures that we're not on a Windows system
+		 *	- many system admins would disable the exec(), shell_exec(), popen() and similar functions
+		 *	  due to security concerns, hence the function_usable() checks
+		 */
+		if (DIRECTORY_SEPARATOR !== '\\')
+		{
+			$cmd = 'file --brief --mime '.escapeshellarg($file['tmp_name']).' 2>&1';
+
+			if (function_usable('exec'))
+			{
+				/* This might look confusing, as $mime is being populated with all of the output when set in the second parameter.
+				 * However, we only need the last line, which is the actual return value of exec(), and as such - it overwrites
+				 * anything that could already be set for $mime previously. This effectively makes the second parameter a dummy
+				 * value, which is only put to allow us to get the return status code.
+				 */
+				$mime = @exec($cmd, $mime, $return_status);
+				if ($return_status === 0 && is_string($mime) && preg_match($regexp, $mime, $matches))
+				{
+					$this->file_type = $matches[1];
+					return;
+				}
+			}
+
+			if (function_usable('shell_exec'))
+			{
+				$mime = @shell_exec($cmd);
+				if (strlen($mime) > 0)
+				{
+					$mime = explode("\n", trim($mime));
+					if (preg_match($regexp, $mime[(count($mime) - 1)], $matches))
+					{
+						$this->file_type = $matches[1];
+						return;
+					}
+				}
+			}
+
+			if (function_usable('popen'))
+			{
+				$proc = @popen($cmd, 'r');
+				if (is_resource($proc))
+				{
+					$mime = @fread($proc, 512);
+					@pclose($proc);
+					if ($mime !== FALSE)
+					{
+						$mime = explode("\n", trim($mime));
+						if (preg_match($regexp, $mime[(count($mime) - 1)], $matches))
+						{
+							$this->file_type = $matches[1];
+							return;
+						}
+					}
+				}
+			}
+		}
+
+		// Fall back to mime_content_type(), if available (still better than $_FILES[$field]['type'])
+		if (function_exists('mime_content_type'))
+		{
+			$this->file_type = @mime_content_type($file['tmp_name']);
+			if (strlen($this->file_type) > 0) // It's possible that mime_content_type() returns FALSE or an empty string
+			{
+				return;
+			}
+		}
+
+		$this->file_type = $file['type'];
+	}
+
+}
diff --git a/system/libraries/User_agent.php b/system/libraries/User_agent.php
new file mode 100644
index 00000000..a42975b3
--- /dev/null
+++ b/system/libraries/User_agent.php
@@ -0,0 +1,681 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * User Agent Class
+ *
+ * Identifies the platform, browser, robot, or mobile device of the browsing agent
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	User Agent
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/user_agent.html
+ */
+class CI_User_agent {
+
+	/**
+	 * Current user-agent
+	 *
+	 * @var string
+	 */
+	public $agent = NULL;
+
+	/**
+	 * Flag for if the user-agent belongs to a browser
+	 *
+	 * @var bool
+	 */
+	public $is_browser = FALSE;
+
+	/**
+	 * Flag for if the user-agent is a robot
+	 *
+	 * @var bool
+	 */
+	public $is_robot = FALSE;
+
+	/**
+	 * Flag for if the user-agent is a mobile browser
+	 *
+	 * @var bool
+	 */
+	public $is_mobile = FALSE;
+
+	/**
+	 * Languages accepted by the current user agent
+	 *
+	 * @var array
+	 */
+	public $languages = array();
+
+	/**
+	 * Character sets accepted by the current user agent
+	 *
+	 * @var array
+	 */
+	public $charsets = array();
+
+	/**
+	 * List of platforms to compare against current user agent
+	 *
+	 * @var array
+	 */
+	public $platforms = array();
+
+	/**
+	 * List of browsers to compare against current user agent
+	 *
+	 * @var array
+	 */
+	public $browsers = array();
+
+	/**
+	 * List of mobile browsers to compare against current user agent
+	 *
+	 * @var array
+	 */
+	public $mobiles = array();
+
+	/**
+	 * List of robots to compare against current user agent
+	 *
+	 * @var array
+	 */
+	public $robots = array();
+
+	/**
+	 * Current user-agent platform
+	 *
+	 * @var string
+	 */
+	public $platform = '';
+
+	/**
+	 * Current user-agent browser
+	 *
+	 * @var string
+	 */
+	public $browser = '';
+
+	/**
+	 * Current user-agent version
+	 *
+	 * @var string
+	 */
+	public $version = '';
+
+	/**
+	 * Current user-agent mobile name
+	 *
+	 * @var string
+	 */
+	public $mobile = '';
+
+	/**
+	 * Current user-agent robot name
+	 *
+	 * @var string
+	 */
+	public $robot = '';
+
+	/**
+	 * HTTP Referer
+	 *
+	 * @var	mixed
+	 */
+	public $referer;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * Sets the User Agent and runs the compilation routine
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$this->_load_agent_file();
+
+		if (isset($_SERVER['HTTP_USER_AGENT']))
+		{
+			$this->agent = trim($_SERVER['HTTP_USER_AGENT']);
+			$this->_compile_data();
+		}
+
+		log_message('info', 'User Agent Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile the User Agent Data
+	 *
+	 * @return	bool
+	 */
+	protected function _load_agent_file()
+	{
+		if (($found = file_exists(APPPATH.'config/user_agents.php')))
+		{
+			include(APPPATH.'config/user_agents.php');
+		}
+
+		if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/user_agents.php'))
+		{
+			include(APPPATH.'config/'.ENVIRONMENT.'/user_agents.php');
+			$found = TRUE;
+		}
+
+		if ($found !== TRUE)
+		{
+			return FALSE;
+		}
+
+		$return = FALSE;
+
+		if (isset($platforms))
+		{
+			$this->platforms = $platforms;
+			unset($platforms);
+			$return = TRUE;
+		}
+
+		if (isset($browsers))
+		{
+			$this->browsers = $browsers;
+			unset($browsers);
+			$return = TRUE;
+		}
+
+		if (isset($mobiles))
+		{
+			$this->mobiles = $mobiles;
+			unset($mobiles);
+			$return = TRUE;
+		}
+
+		if (isset($robots))
+		{
+			$this->robots = $robots;
+			unset($robots);
+			$return = TRUE;
+		}
+
+		return $return;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile the User Agent Data
+	 *
+	 * @return	bool
+	 */
+	protected function _compile_data()
+	{
+		$this->_set_platform();
+
+		foreach (array('_set_robot', '_set_browser', '_set_mobile') as $function)
+		{
+			if ($this->$function() === TRUE)
+			{
+				break;
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Platform
+	 *
+	 * @return	bool
+	 */
+	protected function _set_platform()
+	{
+		if (is_array($this->platforms) && count($this->platforms) > 0)
+		{
+			foreach ($this->platforms as $key => $val)
+			{
+				if (preg_match('|'.preg_quote($key).'|i', $this->agent))
+				{
+					$this->platform = $val;
+					return TRUE;
+				}
+			}
+		}
+
+		$this->platform = 'Unknown Platform';
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Browser
+	 *
+	 * @return	bool
+	 */
+	protected function _set_browser()
+	{
+		if (is_array($this->browsers) && count($this->browsers) > 0)
+		{
+			foreach ($this->browsers as $key => $val)
+			{
+				if (preg_match('|'.$key.'.*?([0-9\.]+)|i', $this->agent, $match))
+				{
+					$this->is_browser = TRUE;
+					$this->version = $match[1];
+					$this->browser = $val;
+					$this->_set_mobile();
+					return TRUE;
+				}
+			}
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Robot
+	 *
+	 * @return	bool
+	 */
+	protected function _set_robot()
+	{
+		if (is_array($this->robots) && count($this->robots) > 0)
+		{
+			foreach ($this->robots as $key => $val)
+			{
+				if (preg_match('|'.preg_quote($key).'|i', $this->agent))
+				{
+					$this->is_robot = TRUE;
+					$this->robot = $val;
+					$this->_set_mobile();
+					return TRUE;
+				}
+			}
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Mobile Device
+	 *
+	 * @return	bool
+	 */
+	protected function _set_mobile()
+	{
+		if (is_array($this->mobiles) && count($this->mobiles) > 0)
+		{
+			foreach ($this->mobiles as $key => $val)
+			{
+				if (FALSE !== (stripos($this->agent, $key)))
+				{
+					$this->is_mobile = TRUE;
+					$this->mobile = $val;
+					return TRUE;
+				}
+			}
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the accepted languages
+	 *
+	 * @return	void
+	 */
+	protected function _set_languages()
+	{
+		if ((count($this->languages) === 0) && ! empty($_SERVER['HTTP_ACCEPT_LANGUAGE']))
+		{
+			$this->languages = explode(',', preg_replace('/(;\s?q=[0-9\.]+)|\s/i', '', strtolower(trim($_SERVER['HTTP_ACCEPT_LANGUAGE']))));
+		}
+
+		if (count($this->languages) === 0)
+		{
+			$this->languages = array('Undefined');
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the accepted character sets
+	 *
+	 * @return	void
+	 */
+	protected function _set_charsets()
+	{
+		if ((count($this->charsets) === 0) && ! empty($_SERVER['HTTP_ACCEPT_CHARSET']))
+		{
+			$this->charsets = explode(',', preg_replace('/(;\s?q=.+)|\s/i', '', strtolower(trim($_SERVER['HTTP_ACCEPT_CHARSET']))));
+		}
+
+		if (count($this->charsets) === 0)
+		{
+			$this->charsets = array('Undefined');
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is Browser
+	 *
+	 * @param	string	$key
+	 * @return	bool
+	 */
+	public function is_browser($key = NULL)
+	{
+		if ( ! $this->is_browser)
+		{
+			return FALSE;
+		}
+
+		// No need to be specific, it's a browser
+		if ($key === NULL)
+		{
+			return TRUE;
+		}
+
+		// Check for a specific browser
+		return (isset($this->browsers[$key]) && $this->browser === $this->browsers[$key]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is Robot
+	 *
+	 * @param	string	$key
+	 * @return	bool
+	 */
+	public function is_robot($key = NULL)
+	{
+		if ( ! $this->is_robot)
+		{
+			return FALSE;
+		}
+
+		// No need to be specific, it's a robot
+		if ($key === NULL)
+		{
+			return TRUE;
+		}
+
+		// Check for a specific robot
+		return (isset($this->robots[$key]) && $this->robot === $this->robots[$key]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is Mobile
+	 *
+	 * @param	string	$key
+	 * @return	bool
+	 */
+	public function is_mobile($key = NULL)
+	{
+		if ( ! $this->is_mobile)
+		{
+			return FALSE;
+		}
+
+		// No need to be specific, it's a mobile
+		if ($key === NULL)
+		{
+			return TRUE;
+		}
+
+		// Check for a specific robot
+		return (isset($this->mobiles[$key]) && $this->mobile === $this->mobiles[$key]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is this a referral from another site?
+	 *
+	 * @return	bool
+	 */
+	public function is_referral()
+	{
+		if ( ! isset($this->referer))
+		{
+			if (empty($_SERVER['HTTP_REFERER']))
+			{
+				$this->referer = FALSE;
+			}
+			else
+			{
+				$referer_host = @parse_url($_SERVER['HTTP_REFERER'], PHP_URL_HOST);
+				$own_host = parse_url(config_item('base_url'), PHP_URL_HOST);
+
+				$this->referer = ($referer_host && $referer_host !== $own_host);
+			}
+		}
+
+		return $this->referer;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Agent String
+	 *
+	 * @return	string
+	 */
+	public function agent_string()
+	{
+		return $this->agent;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Platform
+	 *
+	 * @return	string
+	 */
+	public function platform()
+	{
+		return $this->platform;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Browser Name
+	 *
+	 * @return	string
+	 */
+	public function browser()
+	{
+		return $this->browser;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the Browser Version
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		return $this->version;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get The Robot Name
+	 *
+	 * @return	string
+	 */
+	public function robot()
+	{
+		return $this->robot;
+	}
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the Mobile Device
+	 *
+	 * @return	string
+	 */
+	public function mobile()
+	{
+		return $this->mobile;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the referrer
+	 *
+	 * @return	bool
+	 */
+	public function referrer()
+	{
+		return empty($_SERVER['HTTP_REFERER']) ? '' : trim($_SERVER['HTTP_REFERER']);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the accepted languages
+	 *
+	 * @return	array
+	 */
+	public function languages()
+	{
+		if (count($this->languages) === 0)
+		{
+			$this->_set_languages();
+		}
+
+		return $this->languages;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the accepted Character Sets
+	 *
+	 * @return	array
+	 */
+	public function charsets()
+	{
+		if (count($this->charsets) === 0)
+		{
+			$this->_set_charsets();
+		}
+
+		return $this->charsets;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Test for a particular language
+	 *
+	 * @param	string	$lang
+	 * @return	bool
+	 */
+	public function accept_lang($lang = 'en')
+	{
+		return in_array(strtolower($lang), $this->languages(), TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Test for a particular character set
+	 *
+	 * @param	string	$charset
+	 * @return	bool
+	 */
+	public function accept_charset($charset = 'utf-8')
+	{
+		return in_array(strtolower($charset), $this->charsets(), TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse a custom user-agent string
+	 *
+	 * @param	string	$string
+	 * @return	void
+	 */
+	public function parse($string)
+	{
+		// Reset values
+		$this->is_browser = FALSE;
+		$this->is_robot = FALSE;
+		$this->is_mobile = FALSE;
+		$this->browser = '';
+		$this->version = '';
+		$this->mobile = '';
+		$this->robot = '';
+
+		// Set the new user-agent string and parse it, unless empty
+		$this->agent = $string;
+
+		if ( ! empty($string))
+		{
+			$this->_compile_data();
+		}
+	}
+
+}
diff --git a/system/libraries/Xmlrpc.php b/system/libraries/Xmlrpc.php
new file mode 100644
index 00000000..fbb9a28a
--- /dev/null
+++ b/system/libraries/Xmlrpc.php
@@ -0,0 +1,1918 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+if ( ! function_exists('xml_parser_create'))
+{
+	show_error('Your PHP installation does not support XML');
+}
+
+// ------------------------------------------------------------------------
+
+/**
+ * XML-RPC request handler class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	XML-RPC
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/xmlrpc.html
+ */
+class CI_Xmlrpc {
+
+	/**
+	 * Debug flag
+	 *
+	 * @var	bool
+	 */
+	public $debug		= FALSE;
+
+	/**
+	 * I4 data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcI4	= 'i4';
+
+	/**
+	 * Integer data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcInt	= 'int';
+
+	/**
+	 * Boolean data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcBoolean	= 'boolean';
+
+	/**
+	 * Double data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcDouble	= 'double';
+
+	/**
+	 * String data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcString	= 'string';
+
+	/**
+	 * DateTime format
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcDateTime	= 'dateTime.iso8601';
+
+	/**
+	 * Base64 data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcBase64	= 'base64';
+
+	/**
+	 * Array data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcArray	= 'array';
+
+	/**
+	 * Struct data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcStruct	= 'struct';
+
+	/**
+	 * Data types list
+	 *
+	 * @var	array
+	 */
+	public $xmlrpcTypes	= array();
+
+	/**
+	 * Valid parents list
+	 *
+	 * @var	array
+	 */
+	public $valid_parents	= array();
+
+	/**
+	 * Response error numbers list
+	 *
+	 * @var	array
+	 */
+	public $xmlrpcerr		= array();
+
+	/**
+	 * Response error messages list
+	 *
+	 * @var	string[]
+	 */
+	public $xmlrpcstr		= array();
+
+	/**
+	 * Encoding charset
+	 *
+	 * @var	string
+	 */
+	public $xmlrpc_defencoding	= 'UTF-8';
+
+	/**
+	 * XML-RPC client name
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcName		= 'XML-RPC for CodeIgniter';
+
+	/**
+	 * XML-RPC version
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcVersion		= '1.1';
+
+	/**
+	 * Start of user errors
+	 *
+	 * @var	int
+	 */
+	public $xmlrpcerruser		= 800;
+
+	/**
+	 * Start of XML parse errors
+	 *
+	 * @var	int
+	 */
+	public $xmlrpcerrxml		= 100;
+
+	/**
+	 * Backslash replacement value
+	 *
+	 * @var	string
+	 */
+	public $xmlrpc_backslash	= '';
+
+	/**
+	 * XML-RPC Client object
+	 *
+	 * @var	object
+	 */
+	public $client;
+
+	/**
+	 * XML-RPC Method name
+	 *
+	 * @var	string
+	 */
+	public $method;
+
+	/**
+	 * XML-RPC Data
+	 *
+	 * @var	array
+	 */
+	public $data;
+
+	/**
+	 * XML-RPC Message
+	 *
+	 * @var	string
+	 */
+	public $message			= '';
+
+	/**
+	 * Request error message
+	 *
+	 * @var	string
+	 */
+	public $error			= '';
+
+	/**
+	 * XML-RPC result object
+	 *
+	 * @var	object
+	 */
+	public $result;
+
+	/**
+	 * XML-RPC Response
+	 *
+	 * @var	array
+	 */
+	public $response		= array(); // Response from remote server
+
+	/**
+	 * XSS Filter flag
+	 *
+	 * @var	bool
+	 */
+	public $xss_clean		= TRUE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * Initializes property default values
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		$this->xmlrpc_backslash = chr(92).chr(92);
+
+		// Types for info sent back and forth
+		$this->xmlrpcTypes = array(
+			$this->xmlrpcI4	 		=> '1',
+			$this->xmlrpcInt		=> '1',
+			$this->xmlrpcBoolean	=> '1',
+			$this->xmlrpcString		=> '1',
+			$this->xmlrpcDouble		=> '1',
+			$this->xmlrpcDateTime	=> '1',
+			$this->xmlrpcBase64		=> '1',
+			$this->xmlrpcArray		=> '2',
+			$this->xmlrpcStruct		=> '3'
+		);
+
+		// Array of Valid Parents for Various XML-RPC elements
+		$this->valid_parents = array('BOOLEAN' => array('VALUE'),
+			'I4'				=> array('VALUE'),
+			'INT'				=> array('VALUE'),
+			'STRING'			=> array('VALUE'),
+			'DOUBLE'			=> array('VALUE'),
+			'DATETIME.ISO8601'	=> array('VALUE'),
+			'BASE64'			=> array('VALUE'),
+			'ARRAY'			=> array('VALUE'),
+			'STRUCT'			=> array('VALUE'),
+			'PARAM'			=> array('PARAMS'),
+			'METHODNAME'		=> array('METHODCALL'),
+			'PARAMS'			=> array('METHODCALL', 'METHODRESPONSE'),
+			'MEMBER'			=> array('STRUCT'),
+			'NAME'				=> array('MEMBER'),
+			'DATA'				=> array('ARRAY'),
+			'FAULT'			=> array('METHODRESPONSE'),
+			'VALUE'			=> array('MEMBER', 'DATA', 'PARAM', 'FAULT')
+		);
+
+		// XML-RPC Responses
+		$this->xmlrpcerr['unknown_method'] = '1';
+		$this->xmlrpcstr['unknown_method'] = 'This is not a known method for this XML-RPC Server';
+		$this->xmlrpcerr['invalid_return'] = '2';
+		$this->xmlrpcstr['invalid_return'] = 'The XML data received was either invalid or not in the correct form for XML-RPC. Turn on debugging to examine the XML data further.';
+		$this->xmlrpcerr['incorrect_params'] = '3';
+		$this->xmlrpcstr['incorrect_params'] = 'Incorrect parameters were passed to method';
+		$this->xmlrpcerr['introspect_unknown'] = '4';
+		$this->xmlrpcstr['introspect_unknown'] = 'Cannot inspect signature for request: method unknown';
+		$this->xmlrpcerr['http_error'] = '5';
+		$this->xmlrpcstr['http_error'] = "Did not receive a '200 OK' response from remote server.";
+		$this->xmlrpcerr['no_data'] = '6';
+		$this->xmlrpcstr['no_data'] = 'No data received from server.';
+
+		$this->initialize($config);
+
+		log_message('info', 'XML-RPC Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function initialize($config = array())
+	{
+		if (count($config) > 0)
+		{
+			foreach ($config as $key => $val)
+			{
+				if (isset($this->$key))
+				{
+					$this->$key = $val;
+				}
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse server URL
+	 *
+	 * @param	string	$url
+	 * @param	int	$port
+	 * @param	string	$proxy
+	 * @param	int	$proxy_port
+	 * @return	void
+	 */
+	public function server($url, $port = 80, $proxy = FALSE, $proxy_port = 8080)
+	{
+		if (stripos($url, 'http') !== 0)
+		{
+			$url = 'http://'.$url;
+		}
+
+		$parts = parse_url($url);
+
+		if (isset($parts['user'], $parts['pass']))
+		{
+			$parts['host'] = $parts['user'].':'.$parts['pass'].'@'.$parts['host'];
+		}
+
+		$path = isset($parts['path']) ? $parts['path'] : '/';
+
+		if ( ! empty($parts['query']))
+		{
+			$path .= '?'.$parts['query'];
+		}
+
+		$this->client = new XML_RPC_Client($path, $parts['host'], $port, $proxy, $proxy_port);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Timeout
+	 *
+	 * @param	int	$seconds
+	 * @return	void
+	 */
+	public function timeout($seconds = 5)
+	{
+		if ($this->client !== NULL && is_int($seconds))
+		{
+			$this->client->timeout = $seconds;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Methods
+	 *
+	 * @param	string	$function	Method name
+	 * @return	void
+	 */
+	public function method($function)
+	{
+		$this->method = $function;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Take Array of Data and Create Objects
+	 *
+	 * @param	array	$incoming
+	 * @return	void
+	 */
+	public function request($incoming)
+	{
+		if ( ! is_array($incoming))
+		{
+			// Send Error
+			return;
+		}
+
+		$this->data = array();
+
+		foreach ($incoming as $key => $value)
+		{
+			$this->data[$key] = $this->values_parsing($value);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Debug
+	 *
+	 * @param	bool	$flag
+	 * @return	void
+	 */
+	public function set_debug($flag = TRUE)
+	{
+		$this->debug = ($flag === TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Values Parsing
+	 *
+	 * @param	mixed	$value
+	 * @return	object
+	 */
+	public function values_parsing($value)
+	{
+		if (is_array($value) && array_key_exists(0, $value))
+		{
+			if ( ! isset($value[1], $this->xmlrpcTypes[$value[1]]))
+			{
+				$temp = new XML_RPC_Values($value[0], (is_array($value[0]) ? 'array' : 'string'));
+			}
+			else
+			{
+				if (is_array($value[0]) && ($value[1] === 'struct' OR $value[1] === 'array'))
+				{
+					foreach (array_keys($value[0]) as $k)
+					{
+						$value[0][$k] = $this->values_parsing($value[0][$k]);
+					}
+				}
+
+				$temp = new XML_RPC_Values($value[0], $value[1]);
+			}
+		}
+		else
+		{
+			$temp = new XML_RPC_Values($value, 'string');
+		}
+
+		return $temp;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sends XML-RPC Request
+	 *
+	 * @return	bool
+	 */
+	public function send_request()
+	{
+		$this->message = new XML_RPC_Message($this->method, $this->data);
+		$this->message->debug = $this->debug;
+
+		if ( ! $this->result = $this->client->send($this->message) OR ! is_object($this->result->val))
+		{
+			$this->error = $this->result->errstr;
+			return FALSE;
+		}
+
+		$this->response = $this->result->decode();
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns Error
+	 *
+	 * @return	string
+	 */
+	public function display_error()
+	{
+		return $this->error;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns Remote Server Response
+	 *
+	 * @return	string
+	 */
+	public function display_response()
+	{
+		return $this->response;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sends an Error Message for Server Request
+	 *
+	 * @param	int	$number
+	 * @param	string	$message
+	 * @return	object
+	 */
+	public function send_error_message($number, $message)
+	{
+		return new XML_RPC_Response(0, $number, $message);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send Response for Server Request
+	 *
+	 * @param	array	$response
+	 * @return	object
+	 */
+	public function send_response($response)
+	{
+		// $response should be array of values, which will be parsed
+		// based on their data and type into a valid group of XML-RPC values
+		return new XML_RPC_Response($this->values_parsing($response));
+	}
+
+} // END XML_RPC Class
+
+/**
+ * XML-RPC Client class
+ *
+ * @category	XML-RPC
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/xmlrpc.html
+ */
+class XML_RPC_Client extends CI_Xmlrpc
+{
+	/**
+	 * Path
+	 *
+	 * @var	string
+	 */
+	public $path			= '';
+
+	/**
+	 * Server hostname
+	 *
+	 * @var	string
+	 */
+	public $server			= '';
+
+	/**
+	 * Server port
+	 *
+	 * @var	int
+	 */
+	public $port			= 80;
+
+	/**
+	 *
+	 * Server username
+	 *
+	 * @var	string
+	 */
+	public $username;
+
+	/**
+	 * Server password
+	 *
+	 * @var	string
+	 */
+	public $password;
+
+	/**
+	 * Proxy hostname
+	 *
+	 * @var	string
+	 */
+	public $proxy			= FALSE;
+
+	/**
+	 * Proxy port
+	 *
+	 * @var	int
+	 */
+	public $proxy_port		= 8080;
+
+	/**
+	 * Error number
+	 *
+	 * @var	string
+	 */
+	public $errno			= '';
+
+	/**
+	 * Error message
+	 *
+	 * @var	string
+	 */
+	public $errstring		= '';
+
+	/**
+	 * Timeout in seconds
+	 *
+	 * @var	int
+	 */
+	public $timeout		= 5;
+
+	/**
+	 * No Multicall flag
+	 *
+	 * @var	bool
+	 */
+	public $no_multicall	= FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	string	$path
+	 * @param	object	$server
+	 * @param	int	$port
+	 * @param	string	$proxy
+	 * @param	int	$proxy_port
+	 * @return	void
+	 */
+	public function __construct($path, $server, $port = 80, $proxy = FALSE, $proxy_port = 8080)
+	{
+		parent::__construct();
+
+		$url = parse_url('http://'.$server);
+
+		if (isset($url['user'], $url['pass']))
+		{
+			$this->username = $url['user'];
+			$this->password = $url['pass'];
+		}
+
+		$this->port = $port;
+		$this->server = $url['host'];
+		$this->path = $path;
+		$this->proxy = $proxy;
+		$this->proxy_port = $proxy_port;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send message
+	 *
+	 * @param	mixed	$msg
+	 * @return	object
+	 */
+	public function send($msg)
+	{
+		if (is_array($msg))
+		{
+			// Multi-call disabled
+			return new XML_RPC_Response(0, $this->xmlrpcerr['multicall_recursion'], $this->xmlrpcstr['multicall_recursion']);
+		}
+
+		return $this->sendPayload($msg);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send payload
+	 *
+	 * @param	object	$msg
+	 * @return	object
+	 */
+	public function sendPayload($msg)
+	{
+		if ($this->proxy === FALSE)
+		{
+			$server = $this->server;
+			$port = $this->port;
+		}
+		else
+		{
+			$server = $this->proxy;
+			$port = $this->proxy_port;
+		}
+
+		$fp = @fsockopen($server, $port, $this->errno, $this->errstring, $this->timeout);
+
+		if ( ! is_resource($fp))
+		{
+			error_log($this->xmlrpcstr['http_error']);
+			return new XML_RPC_Response(0, $this->xmlrpcerr['http_error'], $this->xmlrpcstr['http_error']);
+		}
+
+		if (empty($msg->payload))
+		{
+			// $msg = XML_RPC_Messages
+			$msg->createPayload();
+		}
+
+		$r = "\r\n";
+		$op = 'POST '.$this->path.' HTTP/1.0'.$r
+			.'Host: '.$this->server.$r
+			.'Content-Type: text/xml'.$r
+			.(isset($this->username, $this->password) ? 'Authorization: Basic '.base64_encode($this->username.':'.$this->password).$r : '')
+			.'User-Agent: '.$this->xmlrpcName.$r
+			.'Content-Length: '.strlen($msg->payload).$r.$r
+			.$msg->payload;
+
+		stream_set_timeout($fp, $this->timeout); // set timeout for subsequent operations
+
+		for ($written = $timestamp = 0, $length = strlen($op); $written < $length; $written += $result)
+		{
+			if (($result = fwrite($fp, substr($op, $written))) === FALSE)
+			{
+				break;
+			}
+			// See https://bugs.php.net/bug.php?id=39598 and https://secure.php.net/manual/en/function.fwrite.php#96951
+			elseif ($result === 0)
+			{
+				if ($timestamp === 0)
+				{
+					$timestamp = time();
+				}
+				elseif ($timestamp < (time() - $this->timeout))
+				{
+					$result = FALSE;
+					break;
+				}
+			}
+			else
+			{
+				$timestamp = 0;
+			}
+		}
+
+		if ($result === FALSE)
+		{
+			error_log($this->xmlrpcstr['http_error']);
+			return new XML_RPC_Response(0, $this->xmlrpcerr['http_error'], $this->xmlrpcstr['http_error']);
+		}
+
+		$resp = $msg->parseResponse($fp);
+		fclose($fp);
+		return $resp;
+	}
+
+} // END XML_RPC_Client Class
+
+/**
+ * XML-RPC Response class
+ *
+ * @category	XML-RPC
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/xmlrpc.html
+ */
+class XML_RPC_Response
+{
+
+	/**
+	 * Value
+	 *
+	 * @var	mixed
+	 */
+	public $val		= 0;
+
+	/**
+	 * Error number
+	 *
+	 * @var	int
+	 */
+	public $errno		= 0;
+
+	/**
+	 * Error message
+	 *
+	 * @var	string
+	 */
+	public $errstr		= '';
+
+	/**
+	 * Headers list
+	 *
+	 * @var	array
+	 */
+	public $headers		= array();
+
+	/**
+	 * XSS Filter flag
+	 *
+	 * @var	bool
+	 */
+	public $xss_clean	= TRUE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	mixed	$val
+	 * @param	int	$code
+	 * @param	string	$fstr
+	 * @return	void
+	 */
+	public function __construct($val, $code = 0, $fstr = '')
+	{
+		if ($code !== 0)
+		{
+			// error
+			$this->errno = $code;
+			$this->errstr = htmlspecialchars($fstr, ENT_XML1 | ENT_NOQUOTES, 'UTF-8');
+		}
+		elseif ( ! is_object($val))
+		{
+			// programmer error, not an object
+			error_log("Invalid type '".gettype($val)."' (value: ".$val.') passed to XML_RPC_Response. Defaulting to empty value.');
+			$this->val = new XML_RPC_Values();
+		}
+		else
+		{
+			$this->val = $val;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fault code
+	 *
+	 * @return	int
+	 */
+	public function faultCode()
+	{
+		return $this->errno;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fault string
+	 *
+	 * @return	string
+	 */
+	public function faultString()
+	{
+		return $this->errstr;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Value
+	 *
+	 * @return	mixed
+	 */
+	public function value()
+	{
+		return $this->val;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prepare response
+	 *
+	 * @return	string	xml
+	 */
+	public function prepare_response()
+	{
+		return "<methodResponse>\n"
+			.($this->errno
+				? '<fault>
+	<value>
+		<struct>
+			<member>
+				<name>faultCode</name>
+				<value><int>'.$this->errno.'</int></value>
+			</member>
+			<member>
+				<name>faultString</name>
+				<value><string>'.$this->errstr.'</string></value>
+			</member>
+		</struct>
+	</value>
+</fault>'
+				: "<params>\n<param>\n".$this->val->serialize_class()."</param>\n</params>")
+			."\n</methodResponse>";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decode
+	 *
+	 * @param	mixed	$array
+	 * @return	array
+	 */
+	public function decode($array = NULL)
+	{
+		$CI =& get_instance();
+
+		if (is_array($array))
+		{
+			foreach ($array as $key => &$value)
+			{
+				if (is_array($value))
+				{
+					$array[$key] = $this->decode($value);
+				}
+				elseif ($this->xss_clean)
+				{
+					$array[$key] = $CI->security->xss_clean($value);
+				}
+			}
+
+			return $array;
+		}
+
+		$result = $this->xmlrpc_decoder($this->val);
+
+		if (is_array($result))
+		{
+			$result = $this->decode($result);
+		}
+		elseif ($this->xss_clean)
+		{
+			$result = $CI->security->xss_clean($result);
+		}
+
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * XML-RPC Object to PHP Types
+	 *
+	 * @param	object
+	 * @return	array
+	 */
+	public function xmlrpc_decoder($xmlrpc_val)
+	{
+		$kind = $xmlrpc_val->kindOf();
+
+		if ($kind === 'scalar')
+		{
+			return $xmlrpc_val->scalarval();
+		}
+		elseif ($kind === 'array')
+		{
+			reset($xmlrpc_val->me);
+			$b = current($xmlrpc_val->me);
+			$arr = array();
+
+			for ($i = 0, $size = count($b); $i < $size; $i++)
+			{
+				$arr[] = $this->xmlrpc_decoder($xmlrpc_val->me['array'][$i]);
+			}
+			return $arr;
+		}
+		elseif ($kind === 'struct')
+		{
+			reset($xmlrpc_val->me['struct']);
+			$arr = array();
+
+			foreach ($xmlrpc_val->me['struct'] as $key => &$value)
+			{
+				$arr[$key] = $this->xmlrpc_decoder($value);
+			}
+
+			return $arr;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ISO-8601 time to server or UTC time
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	int	unix timestamp
+	 */
+	public function iso8601_decode($time, $utc = FALSE)
+	{
+		// Return a time in the localtime, or UTC
+		$t = 0;
+		if (preg_match('/([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})/', $time, $regs))
+		{
+			$fnc = ($utc === TRUE) ? 'gmmktime' : 'mktime';
+			$t = $fnc($regs[4], $regs[5], $regs[6], $regs[2], $regs[3], $regs[1]);
+		}
+		return $t;
+	}
+
+} // END XML_RPC_Response Class
+
+/**
+ * XML-RPC Message class
+ *
+ * @category	XML-RPC
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/xmlrpc.html
+ */
+class XML_RPC_Message extends CI_Xmlrpc
+{
+
+	/**
+	 * Payload
+	 *
+	 * @var	string
+	 */
+	public $payload;
+
+	/**
+	 * Method name
+	 *
+	 * @var	string
+	 */
+	public $method_name;
+
+	/**
+	 * Parameter list
+	 *
+	 * @var	array
+	 */
+	public $params		= array();
+
+	/**
+	 * XH?
+	 *
+	 * @var	array
+	 */
+	public $xh		= array();
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	string	$method
+	 * @param	array	$pars
+	 * @return	void
+	 */
+	public function __construct($method, $pars = FALSE)
+	{
+		parent::__construct();
+
+		$this->method_name = $method;
+		if (is_array($pars) && count($pars) > 0)
+		{
+			for ($i = 0, $c = count($pars); $i < $c; $i++)
+			{
+				// $pars[$i] = XML_RPC_Values
+				$this->params[] = $pars[$i];
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Payload to Send
+	 *
+	 * @return	void
+	 */
+	public function createPayload()
+	{
+		$this->payload = '<?xml version="1.0"?'.">\r\n<methodCall>\r\n"
+				.'<methodName>'.$this->method_name."</methodName>\r\n"
+				."<params>\r\n";
+
+		for ($i = 0, $c = count($this->params); $i < $c; $i++)
+		{
+			// $p = XML_RPC_Values
+			$p = $this->params[$i];
+			$this->payload .= "<param>\r\n".$p->serialize_class()."</param>\r\n";
+		}
+
+		$this->payload .= "</params>\r\n</methodCall>\r\n";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse External XML-RPC Server's Response
+	 *
+	 * @param	resource
+	 * @return	object
+	 */
+	public function parseResponse($fp)
+	{
+		$data = '';
+
+		while ($datum = fread($fp, 4096))
+		{
+			$data .= $datum;
+		}
+
+		// Display HTTP content for debugging
+		if ($this->debug === TRUE)
+		{
+			echo "<pre>---DATA---\n".htmlspecialchars($data)."\n---END DATA---\n\n</pre>";
+		}
+
+		// Check for data
+		if ($data === '')
+		{
+			error_log($this->xmlrpcstr['no_data']);
+			return new XML_RPC_Response(0, $this->xmlrpcerr['no_data'], $this->xmlrpcstr['no_data']);
+		}
+
+		// Check for HTTP 200 Response
+		if (strpos($data, 'HTTP') === 0 && ! preg_match('/^HTTP\/[0-9\.]+ 200 /', $data))
+		{
+			$errstr = substr($data, 0, strpos($data, "\n")-1);
+			return new XML_RPC_Response(0, $this->xmlrpcerr['http_error'], $this->xmlrpcstr['http_error'].' ('.$errstr.')');
+		}
+
+		//-------------------------------------
+		// Create and Set Up XML Parser
+		//-------------------------------------
+
+		$parser = xml_parser_create($this->xmlrpc_defencoding);
+		$pname = (string) $parser;
+		$this->xh[$pname] = array(
+			'isf'		=> 0,
+			'ac'		=> '',
+			'headers'	=> array(),
+			'stack'		=> array(),
+			'valuestack'	=> array(),
+			'isf_reason'	=> 0
+		);
+
+		xml_set_object($parser, $this);
+		xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, TRUE);
+		xml_set_element_handler($parser, 'open_tag', 'closing_tag');
+		xml_set_character_data_handler($parser, 'character_data');
+		//xml_set_default_handler($parser, 'default_handler');
+
+		// Get headers
+		$lines = explode("\r\n", $data);
+		while (($line = array_shift($lines)))
+		{
+			if (strlen($line) < 1)
+			{
+				break;
+			}
+			$this->xh[$pname]['headers'][] = $line;
+		}
+		$data = implode("\r\n", $lines);
+
+		// Parse XML data
+		if ( ! xml_parse($parser, $data, TRUE))
+		{
+			$errstr = sprintf('XML error: %s at line %d',
+						xml_error_string(xml_get_error_code($parser)),
+						xml_get_current_line_number($parser));
+
+			$r = new XML_RPC_Response(0, $this->xmlrpcerr['invalid_return'], $this->xmlrpcstr['invalid_return']);
+			xml_parser_free($parser);
+			return $r;
+		}
+		xml_parser_free($parser);
+
+		// Got ourselves some badness, it seems
+		if ($this->xh[$pname]['isf'] > 1)
+		{
+			if ($this->debug === TRUE)
+			{
+				echo "---Invalid Return---\n".$this->xh[$pname]['isf_reason']."---Invalid Return---\n\n";
+			}
+
+			return new XML_RPC_Response(0, $this->xmlrpcerr['invalid_return'], $this->xmlrpcstr['invalid_return'].' '.$this->xh[$pname]['isf_reason']);
+		}
+		elseif ( ! is_object($this->xh[$pname]['value']))
+		{
+			return new XML_RPC_Response(0, $this->xmlrpcerr['invalid_return'], $this->xmlrpcstr['invalid_return'].' '.$this->xh[$pname]['isf_reason']);
+		}
+
+		// Display XML content for debugging
+		if ($this->debug === TRUE)
+		{
+			echo '<pre>';
+
+			if (count($this->xh[$pname]['headers']) > 0)
+			{
+				echo "---HEADERS---\n";
+				foreach ($this->xh[$pname]['headers'] as $header)
+				{
+					echo $header."\n";
+				}
+				echo "---END HEADERS---\n\n";
+			}
+
+			echo "---DATA---\n".htmlspecialchars($data)."\n---END DATA---\n\n---PARSED---\n";
+			var_dump($this->xh[$pname]['value']);
+			echo "\n---END PARSED---</pre>";
+		}
+
+		// Send response
+		$v = $this->xh[$pname]['value'];
+		if ($this->xh[$pname]['isf'])
+		{
+			$errno_v = $v->me['struct']['faultCode'];
+			$errstr_v = $v->me['struct']['faultString'];
+			$errno = $errno_v->scalarval();
+
+			if ($errno === 0)
+			{
+				// FAULT returned, errno needs to reflect that
+				$errno = -1;
+			}
+
+			$r = new XML_RPC_Response($v, $errno, $errstr_v->scalarval());
+		}
+		else
+		{
+			$r = new XML_RPC_Response($v);
+		}
+
+		$r->headers = $this->xh[$pname]['headers'];
+		return $r;
+	}
+
+	// --------------------------------------------------------------------
+
+	// ------------------------------------
+	//  Begin Return Message Parsing section
+	// ------------------------------------
+
+	// quick explanation of components:
+	//   ac - used to accumulate values
+	//   isf - used to indicate a fault
+	//   lv - used to indicate "looking for a value": implements
+	//		the logic to allow values with no types to be strings
+	//   params - used to store parameters in method calls
+	//   method - used to store method name
+	//	 stack - array with parent tree of the xml element,
+	//			 used to validate the nesting of elements
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Start Element Handler
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	void
+	 */
+	public function open_tag($the_parser, $name)
+	{
+		$the_parser = (string) $the_parser;
+
+		// If invalid nesting, then return
+		if ($this->xh[$the_parser]['isf'] > 1) return;
+
+		// Evaluate and check for correct nesting of XML elements
+		if (count($this->xh[$the_parser]['stack']) === 0)
+		{
+			if ($name !== 'METHODRESPONSE' && $name !== 'METHODCALL')
+			{
+				$this->xh[$the_parser]['isf'] = 2;
+				$this->xh[$the_parser]['isf_reason'] = 'Top level XML-RPC element is missing';
+				return;
+			}
+		}
+		// not top level element: see if parent is OK
+		elseif ( ! in_array($this->xh[$the_parser]['stack'][0], $this->valid_parents[$name], TRUE))
+		{
+			$this->xh[$the_parser]['isf'] = 2;
+			$this->xh[$the_parser]['isf_reason'] = 'XML-RPC element '.$name.' cannot be child of '.$this->xh[$the_parser]['stack'][0];
+			return;
+		}
+
+		switch ($name)
+		{
+			case 'STRUCT':
+			case 'ARRAY':
+				// Creates array for child elements
+				$cur_val = array('value' => array(), 'type' => $name);
+				array_unshift($this->xh[$the_parser]['valuestack'], $cur_val);
+				break;
+			case 'METHODNAME':
+			case 'NAME':
+				$this->xh[$the_parser]['ac'] = '';
+				break;
+			case 'FAULT':
+				$this->xh[$the_parser]['isf'] = 1;
+				break;
+			case 'PARAM':
+				$this->xh[$the_parser]['value'] = NULL;
+				break;
+			case 'VALUE':
+				$this->xh[$the_parser]['vt'] = 'value';
+				$this->xh[$the_parser]['ac'] = '';
+				$this->xh[$the_parser]['lv'] = 1;
+				break;
+			case 'I4':
+			case 'INT':
+			case 'STRING':
+			case 'BOOLEAN':
+			case 'DOUBLE':
+			case 'DATETIME.ISO8601':
+			case 'BASE64':
+				if ($this->xh[$the_parser]['vt'] !== 'value')
+				{
+					//two data elements inside a value: an error occurred!
+					$this->xh[$the_parser]['isf'] = 2;
+					$this->xh[$the_parser]['isf_reason'] = 'There is a '.$name.' element following a '
+										.$this->xh[$the_parser]['vt'].' element inside a single value';
+					return;
+				}
+
+				$this->xh[$the_parser]['ac'] = '';
+				break;
+			case 'MEMBER':
+				// Set name of <member> to nothing to prevent errors later if no <name> is found
+				$this->xh[$the_parser]['valuestack'][0]['name'] = '';
+
+				// Set NULL value to check to see if value passed for this param/member
+				$this->xh[$the_parser]['value'] = NULL;
+				break;
+			case 'DATA':
+			case 'METHODCALL':
+			case 'METHODRESPONSE':
+			case 'PARAMS':
+				// valid elements that add little to processing
+				break;
+			default:
+				/// An Invalid Element is Found, so we have trouble
+				$this->xh[$the_parser]['isf'] = 2;
+				$this->xh[$the_parser]['isf_reason'] = 'Invalid XML-RPC element found: '.$name;
+				break;
+		}
+
+		// Add current element name to stack, to allow validation of nesting
+		array_unshift($this->xh[$the_parser]['stack'], $name);
+
+		$name === 'VALUE' OR $this->xh[$the_parser]['lv'] = 0;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * End Element Handler
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	void
+	 */
+	public function closing_tag($the_parser, $name)
+	{
+		$the_parser = (string) $the_parser;
+
+		if ($this->xh[$the_parser]['isf'] > 1) return;
+
+		// Remove current element from stack and set variable
+		// NOTE: If the XML validates, then we do not have to worry about
+		// the opening and closing of elements. Nesting is checked on the opening
+		// tag so we be safe there as well.
+
+		$curr_elem = array_shift($this->xh[$the_parser]['stack']);
+
+		switch ($name)
+		{
+			case 'STRUCT':
+			case 'ARRAY':
+				$cur_val = array_shift($this->xh[$the_parser]['valuestack']);
+				$this->xh[$the_parser]['value'] = isset($cur_val['values']) ? $cur_val['values'] : array();
+				$this->xh[$the_parser]['vt']	= strtolower($name);
+				break;
+			case 'NAME':
+				$this->xh[$the_parser]['valuestack'][0]['name'] = $this->xh[$the_parser]['ac'];
+				break;
+			case 'BOOLEAN':
+			case 'I4':
+			case 'INT':
+			case 'STRING':
+			case 'DOUBLE':
+			case 'DATETIME.ISO8601':
+			case 'BASE64':
+				$this->xh[$the_parser]['vt'] = strtolower($name);
+
+				if ($name === 'STRING')
+				{
+					$this->xh[$the_parser]['value'] = $this->xh[$the_parser]['ac'];
+				}
+				elseif ($name === 'DATETIME.ISO8601')
+				{
+					$this->xh[$the_parser]['vt']	= $this->xmlrpcDateTime;
+					$this->xh[$the_parser]['value'] = $this->xh[$the_parser]['ac'];
+				}
+				elseif ($name === 'BASE64')
+				{
+					$this->xh[$the_parser]['value'] = base64_decode($this->xh[$the_parser]['ac']);
+				}
+				elseif ($name === 'BOOLEAN')
+				{
+					// Translated BOOLEAN values to TRUE AND FALSE
+					$this->xh[$the_parser]['value'] = (bool) $this->xh[$the_parser]['ac'];
+				}
+				elseif ($name=='DOUBLE')
+				{
+					// we have a DOUBLE
+					// we must check that only 0123456789-.<space> are characters here
+					$this->xh[$the_parser]['value'] = preg_match('/^[+-]?[eE0-9\t \.]+$/', $this->xh[$the_parser]['ac'])
+										? (float) $this->xh[$the_parser]['ac']
+										: 'ERROR_NON_NUMERIC_FOUND';
+				}
+				else
+				{
+					// we have an I4/INT
+					// we must check that only 0123456789-<space> are characters here
+					$this->xh[$the_parser]['value'] = preg_match('/^[+-]?[0-9\t ]+$/', $this->xh[$the_parser]['ac'])
+										? (int) $this->xh[$the_parser]['ac']
+										: 'ERROR_NON_NUMERIC_FOUND';
+				}
+				$this->xh[$the_parser]['ac'] = '';
+				$this->xh[$the_parser]['lv'] = 3; // indicate we've found a value
+				break;
+			case 'VALUE':
+				// This if() detects if no scalar was inside <VALUE></VALUE>
+				if ($this->xh[$the_parser]['vt'] == 'value')
+				{
+					$this->xh[$the_parser]['value']	= $this->xh[$the_parser]['ac'];
+					$this->xh[$the_parser]['vt']	= $this->xmlrpcString;
+				}
+
+				// build the XML-RPC value out of the data received, and substitute it
+				$temp = new XML_RPC_Values($this->xh[$the_parser]['value'], $this->xh[$the_parser]['vt']);
+
+				if (count($this->xh[$the_parser]['valuestack']) && $this->xh[$the_parser]['valuestack'][0]['type'] === 'ARRAY')
+				{
+					// Array
+					$this->xh[$the_parser]['valuestack'][0]['values'][] = $temp;
+				}
+				else
+				{
+					// Struct
+					$this->xh[$the_parser]['value'] = $temp;
+				}
+				break;
+			case 'MEMBER':
+				$this->xh[$the_parser]['ac'] = '';
+
+				// If value add to array in the stack for the last element built
+				if ($this->xh[$the_parser]['value'])
+				{
+					$this->xh[$the_parser]['valuestack'][0]['values'][$this->xh[$the_parser]['valuestack'][0]['name']] = $this->xh[$the_parser]['value'];
+				}
+				break;
+			case 'DATA':
+				$this->xh[$the_parser]['ac'] = '';
+				break;
+			case 'PARAM':
+				if ($this->xh[$the_parser]['value'])
+				{
+					$this->xh[$the_parser]['params'][] = $this->xh[$the_parser]['value'];
+				}
+				break;
+			case 'METHODNAME':
+				$this->xh[$the_parser]['method'] = ltrim($this->xh[$the_parser]['ac']);
+				break;
+			case 'PARAMS':
+			case 'FAULT':
+			case 'METHODCALL':
+			case 'METHORESPONSE':
+				// We're all good kids with nuthin' to do
+				break;
+			default:
+				// End of an Invalid Element. Taken care of during the opening tag though
+				break;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse character data
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	void
+	 */
+	public function character_data($the_parser, $data)
+	{
+		$the_parser = (string) $the_parser;
+
+		if ($this->xh[$the_parser]['isf'] > 1) return; // XML Fault found already
+
+		// If a value has not been found
+		if ($this->xh[$the_parser]['lv'] !== 3)
+		{
+			if ($this->xh[$the_parser]['lv'] === 1)
+			{
+				$this->xh[$the_parser]['lv'] = 2; // Found a value
+			}
+
+			if ( ! isset($this->xh[$the_parser]['ac']))
+			{
+				$this->xh[$the_parser]['ac'] = '';
+			}
+
+			$this->xh[$the_parser]['ac'] .= $data;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add parameter
+	 *
+	 * @param	mixed
+	 * @return	void
+	 */
+	public function addParam($par)
+	{
+		$this->params[] = $par;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Output parameters
+	 *
+	 * @param	array	$array
+	 * @return	array
+	 */
+	public function output_parameters(array $array = array())
+	{
+		$CI =& get_instance();
+
+		if ( ! empty($array))
+		{
+			foreach ($array as $key => &$value)
+			{
+				if (is_array($value))
+				{
+					$array[$key] = $this->output_parameters($value);
+				}
+				elseif ($key !== 'bits' && $this->xss_clean)
+				{
+					// 'bits' is for the MetaWeblog API image bits
+					// @todo - this needs to be made more general purpose
+					$array[$key] = $CI->security->xss_clean($value);
+				}
+			}
+
+			return $array;
+		}
+
+		$parameters = array();
+
+		for ($i = 0, $c = count($this->params); $i < $c; $i++)
+		{
+			$a_param = $this->decode_message($this->params[$i]);
+
+			if (is_array($a_param))
+			{
+				$parameters[] = $this->output_parameters($a_param);
+			}
+			else
+			{
+				$parameters[] = ($this->xss_clean) ? $CI->security->xss_clean($a_param) : $a_param;
+			}
+		}
+
+		return $parameters;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decode message
+	 *
+	 * @param	object
+	 * @return	mixed
+	 */
+	public function decode_message($param)
+	{
+		$kind = $param->kindOf();
+
+		if ($kind === 'scalar')
+		{
+			return $param->scalarval();
+		}
+		elseif ($kind === 'array')
+		{
+			reset($param->me);
+			$b = current($param->me);
+			$arr = array();
+
+			for ($i = 0, $c = count($b); $i < $c; $i++)
+			{
+				$arr[] = $this->decode_message($param->me['array'][$i]);
+			}
+
+			return $arr;
+		}
+		elseif ($kind === 'struct')
+		{
+			reset($param->me['struct']);
+			$arr = array();
+
+			foreach ($param->me['struct'] as $key => &$value)
+			{
+				$arr[$key] = $this->decode_message($value);
+			}
+
+			return $arr;
+		}
+	}
+
+} // END XML_RPC_Message Class
+
+/**
+ * XML-RPC Values class
+ *
+ * @category	XML-RPC
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/xmlrpc.html
+ */
+class XML_RPC_Values extends CI_Xmlrpc
+{
+	/**
+	 * Value data
+	 *
+	 * @var	array
+	 */
+	public $me	= array();
+
+	/**
+	 * Value type
+	 *
+	 * @var	int
+	 */
+	public $mytype	= 0;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	mixed	$val
+	 * @param	string	$type
+	 * @return	void
+	 */
+	public function __construct($val = -1, $type = '')
+	{
+		parent::__construct();
+
+		if ($val !== -1 OR $type !== '')
+		{
+			$type = $type === '' ? 'string' : $type;
+
+			if ($this->xmlrpcTypes[$type] == 1)
+			{
+				$this->addScalar($val, $type);
+			}
+			elseif ($this->xmlrpcTypes[$type] == 2)
+			{
+				$this->addArray($val);
+			}
+			elseif ($this->xmlrpcTypes[$type] == 3)
+			{
+				$this->addStruct($val);
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add scalar value
+	 *
+	 * @param	scalar
+	 * @param	string
+	 * @return	int
+	 */
+	public function addScalar($val, $type = 'string')
+	{
+		$typeof = $this->xmlrpcTypes[$type];
+
+		if ($this->mytype === 1)
+		{
+			echo '<strong>XML_RPC_Values</strong>: scalar can have only one value<br />';
+			return 0;
+		}
+
+		if ($typeof != 1)
+		{
+			echo '<strong>XML_RPC_Values</strong>: not a scalar type (${typeof})<br />';
+			return 0;
+		}
+
+		if ($type === $this->xmlrpcBoolean)
+		{
+			$val = (int) (strcasecmp($val, 'true') === 0 OR $val === 1 OR ($val === TRUE && strcasecmp($val, 'false')));
+		}
+
+		if ($this->mytype === 2)
+		{
+			// adding to an array here
+			$ar = $this->me['array'];
+			$ar[] = new XML_RPC_Values($val, $type);
+			$this->me['array'] = $ar;
+		}
+		else
+		{
+			// a scalar, so set the value and remember we're scalar
+			$this->me[$type] = $val;
+			$this->mytype = $typeof;
+		}
+
+		return 1;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add array value
+	 *
+	 * @param	array
+	 * @return	int
+	 */
+	public function addArray($vals)
+	{
+		if ($this->mytype !== 0)
+		{
+			echo '<strong>XML_RPC_Values</strong>: already initialized as a ['.$this->kindOf().']<br />';
+			return 0;
+		}
+
+		$this->mytype = $this->xmlrpcTypes['array'];
+		$this->me['array'] = $vals;
+		return 1;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add struct value
+	 *
+	 * @param	object
+	 * @return	int
+	 */
+	public function addStruct($vals)
+	{
+		if ($this->mytype !== 0)
+		{
+			echo '<strong>XML_RPC_Values</strong>: already initialized as a ['.$this->kindOf().']<br />';
+			return 0;
+		}
+		$this->mytype = $this->xmlrpcTypes['struct'];
+		$this->me['struct'] = $vals;
+		return 1;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get value type
+	 *
+	 * @return	string
+	 */
+	public function kindOf()
+	{
+		switch ($this->mytype)
+		{
+			case 3: return 'struct';
+			case 2: return 'array';
+			case 1: return 'scalar';
+			default: return 'undef';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Serialize data
+	 *
+	 * @param	string
+	 * @param	mixed
+	 * @return	string
+	 */
+	public function serializedata($typ, $val)
+	{
+		$rs = '';
+
+		switch ($this->xmlrpcTypes[$typ])
+		{
+			case 3:
+				// struct
+				$rs .= "<struct>\n";
+				reset($val);
+				foreach ($val as $key2 => &$val2)
+				{
+					$rs .= "<member>\n<name>{$key2}</name>\n".$this->serializeval($val2)."</member>\n";
+				}
+				$rs .= '</struct>';
+				break;
+			case 2:
+				// array
+				$rs .= "<array>\n<data>\n";
+				for ($i = 0, $c = count($val); $i < $c; $i++)
+				{
+					$rs .= $this->serializeval($val[$i]);
+				}
+				$rs .= "</data>\n</array>\n";
+				break;
+			case 1:
+				// others
+				switch ($typ)
+				{
+					case $this->xmlrpcBase64:
+						$rs .= '<'.$typ.'>'.base64_encode( (string) $val).'</'.$typ.">\n";
+						break;
+					case $this->xmlrpcBoolean:
+						$rs .= '<'.$typ.'>'.( (bool) $val ? '1' : '0').'</'.$typ.">\n";
+						break;
+					case $this->xmlrpcString:
+						$rs .= '<'.$typ.'>'.htmlspecialchars( (string) $val).'</'.$typ.">\n";
+						break;
+					default:
+						$rs .= '<'.$typ.'>'.$val.'</'.$typ.">\n";
+						break;
+				}
+			default:
+				break;
+		}
+
+		return $rs;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Serialize class
+	 *
+	 * @return	string
+	 */
+	public function serialize_class()
+	{
+		return $this->serializeval($this);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Serialize value
+	 *
+	 * @param	object
+	 * @return	string
+	 */
+	public function serializeval($o)
+	{
+		$array = $o->me;
+		list($value, $type) = array(reset($array), key($array));
+		return "<value>\n".$this->serializedata($type, $value)."</value>\n";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Scalar value
+	 *
+	 * @return	mixed
+	 */
+	public function scalarval()
+	{
+		return reset($this->me);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encode time in ISO-8601 form.
+	 * Useful for sending time in XML-RPC
+	 *
+	 * @param	int	unix timestamp
+	 * @param	bool
+	 * @return	string
+	*/
+	public function iso8601_encode($time, $utc = FALSE)
+	{
+		return ($utc) ? strftime('%Y%m%dT%H:%i:%s', $time) : gmstrftime('%Y%m%dT%H:%i:%s', $time);
+	}
+
+} // END XML_RPC_Values Class
diff --git a/system/libraries/Xmlrpcs.php b/system/libraries/Xmlrpcs.php
new file mode 100644
index 00000000..e20bf483
--- /dev/null
+++ b/system/libraries/Xmlrpcs.php
@@ -0,0 +1,619 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+if ( ! function_exists('xml_parser_create'))
+{
+	show_error('Your PHP installation does not support XML');
+}
+
+if ( ! class_exists('CI_Xmlrpc', FALSE))
+{
+	show_error('You must load the Xmlrpc class before loading the Xmlrpcs class in order to create a server.');
+}
+
+// ------------------------------------------------------------------------
+
+/**
+ * XML-RPC server class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	XML-RPC
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/xmlrpc.html
+ */
+class CI_Xmlrpcs extends CI_Xmlrpc {
+
+	/**
+	 * Array of methods mapped to function names and signatures
+	 *
+	 * @var array
+	 */
+	public $methods = array();
+
+	/**
+	 * Debug Message
+	 *
+	 * @var string
+	 */
+	public $debug_msg = '';
+
+	/**
+	 * XML RPC Server methods
+	 *
+	 * @var array
+	 */
+	public $system_methods	= array();
+
+	/**
+	 * Configuration object
+	 *
+	 * @var object
+	 */
+	public $object = FALSE;
+
+	/**
+	 * Initialize XMLRPC class
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		parent::__construct();
+		$this->set_system_methods();
+
+		if (isset($config['functions']) && is_array($config['functions']))
+		{
+			$this->methods = array_merge($this->methods, $config['functions']);
+		}
+
+		log_message('info', 'XML-RPC Server Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize Prefs and Serve
+	 *
+	 * @param	mixed
+	 * @return	void
+	 */
+	public function initialize($config = array())
+	{
+		if (isset($config['functions']) && is_array($config['functions']))
+		{
+			$this->methods = array_merge($this->methods, $config['functions']);
+		}
+
+		if (isset($config['debug']))
+		{
+			$this->debug = $config['debug'];
+		}
+
+		if (isset($config['object']) && is_object($config['object']))
+		{
+			$this->object = $config['object'];
+		}
+
+		if (isset($config['xss_clean']))
+		{
+			$this->xss_clean = $config['xss_clean'];
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Setting of System Methods
+	 *
+	 * @return	void
+	 */
+	public function set_system_methods()
+	{
+		$this->methods = array(
+					'system.listMethods'	 => array(
+										'function' => 'this.listMethods',
+										'signature' => array(array($this->xmlrpcArray, $this->xmlrpcString), array($this->xmlrpcArray)),
+										'docstring' => 'Returns an array of available methods on this server'),
+					'system.methodHelp'	 => array(
+										'function' => 'this.methodHelp',
+										'signature' => array(array($this->xmlrpcString, $this->xmlrpcString)),
+										'docstring' => 'Returns a documentation string for the specified method'),
+					'system.methodSignature' => array(
+										'function' => 'this.methodSignature',
+										'signature' => array(array($this->xmlrpcArray, $this->xmlrpcString)),
+										'docstring' => 'Returns an array describing the return type and required parameters of a method'),
+					'system.multicall'	 => array(
+										'function' => 'this.multicall',
+										'signature' => array(array($this->xmlrpcArray, $this->xmlrpcArray)),
+										'docstring' => 'Combine multiple RPC calls in one request. See http://www.xmlrpc.com/discuss/msgReader$1208 for details')
+				);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Main Server Function
+	 *
+	 * @return	void
+	 */
+	public function serve()
+	{
+		$r = $this->parseRequest();
+		$payload = '<?xml version="1.0" encoding="'.$this->xmlrpc_defencoding.'"?'.'>'."\n".$this->debug_msg.$r->prepare_response();
+
+		header('Content-Type: text/xml');
+		header('Content-Length: '.strlen($payload));
+		exit($payload);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Method to Class
+	 *
+	 * @param	string	method name
+	 * @param	string	function
+	 * @param	string	signature
+	 * @param	string	docstring
+	 * @return	void
+	 */
+	public function add_to_map($methodname, $function, $sig, $doc)
+	{
+		$this->methods[$methodname] = array(
+			'function'	=> $function,
+			'signature'	=> $sig,
+			'docstring'	=> $doc
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse Server Request
+	 *
+	 * @param	string	data
+	 * @return	object	xmlrpc response
+	 */
+	public function parseRequest($data = '')
+	{
+		//-------------------------------------
+		//  Get Data
+		//-------------------------------------
+
+		if ($data === '')
+		{
+			$CI =& get_instance();
+			if ($CI->input->method() === 'post')
+			{
+				$data = $CI->input->raw_input_stream;
+			}
+		}
+
+		//-------------------------------------
+		//  Set up XML Parser
+		//-------------------------------------
+
+		$parser = xml_parser_create($this->xmlrpc_defencoding);
+		$parser_object = new XML_RPC_Message('filler');
+		$pname = (string) $parser;
+
+		$parser_object->xh[$pname] = array(
+			'isf' => 0,
+			'isf_reason' => '',
+			'params' => array(),
+			'stack' => array(),
+			'valuestack' => array(),
+			'method' => ''
+		);
+
+		xml_set_object($parser, $parser_object);
+		xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, TRUE);
+		xml_set_element_handler($parser, 'open_tag', 'closing_tag');
+		xml_set_character_data_handler($parser, 'character_data');
+		//xml_set_default_handler($parser, 'default_handler');
+
+		//-------------------------------------
+		// PARSE + PROCESS XML DATA
+		//-------------------------------------
+
+		if ( ! xml_parse($parser, $data, 1))
+		{
+			// Return XML error as a faultCode
+			$r = new XML_RPC_Response(0,
+				$this->xmlrpcerrxml + xml_get_error_code($parser),
+				sprintf('XML error: %s at line %d',
+				xml_error_string(xml_get_error_code($parser)),
+				xml_get_current_line_number($parser)));
+			xml_parser_free($parser);
+		}
+		elseif ($parser_object->xh[$pname]['isf'])
+		{
+			return new XML_RPC_Response(0, $this->xmlrpcerr['invalid_return'], $this->xmlrpcstr['invalid_return']);
+		}
+		else
+		{
+			xml_parser_free($parser);
+
+			$m = new XML_RPC_Message($parser_object->xh[$pname]['method']);
+			$plist = '';
+
+			for ($i = 0, $c = count($parser_object->xh[$pname]['params']); $i < $c; $i++)
+			{
+				if ($this->debug === TRUE)
+				{
+					$plist .= $i.' - '.print_r(get_object_vars($parser_object->xh[$pname]['params'][$i]), TRUE).";\n";
+				}
+
+				$m->addParam($parser_object->xh[$pname]['params'][$i]);
+			}
+
+			if ($this->debug === TRUE)
+			{
+				echo "<pre>---PLIST---\n".$plist."\n---PLIST END---\n\n</pre>";
+			}
+
+			$r = $this->_execute($m);
+		}
+
+		//-------------------------------------
+		// SET DEBUGGING MESSAGE
+		//-------------------------------------
+
+		if ($this->debug === TRUE)
+		{
+			$this->debug_msg = "<!-- DEBUG INFO:\n\n".$plist."\n END DEBUG-->\n";
+		}
+
+		return $r;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Executes the Method
+	 *
+	 * @param	object
+	 * @return	mixed
+	 */
+	protected function _execute($m)
+	{
+		$methName = $m->method_name;
+
+		// Check to see if it is a system call
+		$system_call = (strpos($methName, 'system') === 0);
+
+		if ($this->xss_clean === FALSE)
+		{
+			$m->xss_clean = FALSE;
+		}
+
+		//-------------------------------------
+		// Valid Method
+		//-------------------------------------
+
+		if ( ! isset($this->methods[$methName]['function']))
+		{
+			return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
+		}
+
+		//-------------------------------------
+		// Check for Method (and Object)
+		//-------------------------------------
+
+		$method_parts = explode('.', $this->methods[$methName]['function']);
+		$objectCall   = ! empty($method_parts[1]);
+
+		if ($system_call === TRUE)
+		{
+			if ( ! is_callable(array($this, $method_parts[1])))
+			{
+				return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
+			}
+		}
+		elseif (($objectCall && ( ! method_exists($method_parts[0], $method_parts[1]) OR ! (new ReflectionMethod($method_parts[0], $method_parts[1]))->isPublic()))
+			OR ( ! $objectCall && ! is_callable($this->methods[$methName]['function']))
+		)
+		{
+			return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
+		}
+
+		//-------------------------------------
+		// Checking Methods Signature
+		//-------------------------------------
+
+		if (isset($this->methods[$methName]['signature']))
+		{
+			$sig = $this->methods[$methName]['signature'];
+			for ($i = 0, $c = count($sig); $i < $c; $i++)
+			{
+				$current_sig = $sig[$i];
+
+				if (count($current_sig) === count($m->params)+1)
+				{
+					for ($n = 0, $mc = count($m->params); $n < $mc; $n++)
+					{
+						$p = $m->params[$n];
+						$pt = ($p->kindOf() === 'scalar') ? $p->scalarval() : $p->kindOf();
+
+						if ($pt !== $current_sig[$n+1])
+						{
+							$pno = $n+1;
+							$wanted = $current_sig[$n+1];
+
+							return new XML_RPC_Response(0,
+								$this->xmlrpcerr['incorrect_params'],
+								$this->xmlrpcstr['incorrect_params'] .
+								': Wanted '.$wanted.', got '.$pt.' at param '.$pno.')');
+						}
+					}
+				}
+			}
+		}
+
+		//-------------------------------------
+		// Calls the Function
+		//-------------------------------------
+
+		if ($objectCall === TRUE)
+		{
+			if ($method_parts[0] === 'this' && $system_call === TRUE)
+			{
+				return call_user_func(array($this, $method_parts[1]), $m);
+			}
+			elseif ($this->object === FALSE)
+			{
+				return get_instance()->{$method_parts[1]}($m);
+			}
+
+			return $this->object->{$method_parts[1]}($m);
+		}
+
+		return call_user_func($this->methods[$methName]['function'], $m);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Server Function: List Methods
+	 *
+	 * @param	mixed
+	 * @return	object
+	 */
+	public function listMethods($m)
+	{
+		$v = new XML_RPC_Values();
+		$output = array();
+
+		foreach ($this->methods as $key => $value)
+		{
+			$output[] = new XML_RPC_Values($key, 'string');
+		}
+
+		foreach ($this->system_methods as $key => $value)
+		{
+			$output[] = new XML_RPC_Values($key, 'string');
+		}
+
+		$v->addArray($output);
+		return new XML_RPC_Response($v);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Server Function: Return Signature for Method
+	 *
+	 * @param	mixed
+	 * @return	object
+	 */
+	public function methodSignature($m)
+	{
+		$parameters = $m->output_parameters();
+		$method_name = $parameters[0];
+
+		if (isset($this->methods[$method_name]))
+		{
+			if ($this->methods[$method_name]['signature'])
+			{
+				$sigs = array();
+				$signature = $this->methods[$method_name]['signature'];
+
+				for ($i = 0, $c = count($signature); $i < $c; $i++)
+				{
+					$cursig = array();
+					$inSig = $signature[$i];
+					for ($j = 0, $jc = count($inSig); $j < $jc; $j++)
+					{
+						$cursig[]= new XML_RPC_Values($inSig[$j], 'string');
+					}
+					$sigs[] = new XML_RPC_Values($cursig, 'array');
+				}
+
+				return new XML_RPC_Response(new XML_RPC_Values($sigs, 'array'));
+			}
+
+			return new XML_RPC_Response(new XML_RPC_Values('undef', 'string'));
+		}
+
+		return new XML_RPC_Response(0, $this->xmlrpcerr['introspect_unknown'], $this->xmlrpcstr['introspect_unknown']);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Server Function: Doc String for Method
+	 *
+	 * @param	mixed
+	 * @return	object
+	 */
+	public function methodHelp($m)
+	{
+		$parameters = $m->output_parameters();
+		$method_name = $parameters[0];
+
+		if (isset($this->methods[$method_name]))
+		{
+			$docstring = isset($this->methods[$method_name]['docstring']) ? $this->methods[$method_name]['docstring'] : '';
+
+			return new XML_RPC_Response(new XML_RPC_Values($docstring, 'string'));
+		}
+
+		return new XML_RPC_Response(0, $this->xmlrpcerr['introspect_unknown'], $this->xmlrpcstr['introspect_unknown']);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Server Function: Multi-call
+	 *
+	 * @param	mixed
+	 * @return	object
+	 */
+	public function multicall($m)
+	{
+		// Disabled
+		return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
+
+		$parameters = $m->output_parameters();
+		$calls = $parameters[0];
+
+		$result = array();
+
+		foreach ($calls as $value)
+		{
+			$m = new XML_RPC_Message($value[0]);
+			$plist = '';
+
+			for ($i = 0, $c = count($value[1]); $i < $c; $i++)
+			{
+				$m->addParam(new XML_RPC_Values($value[1][$i], 'string'));
+			}
+
+			$attempt = $this->_execute($m);
+
+			if ($attempt->faultCode() !== 0)
+			{
+				return $attempt;
+			}
+
+			$result[] = new XML_RPC_Values(array($attempt->value()), 'array');
+		}
+
+		return new XML_RPC_Response(new XML_RPC_Values($result, 'array'));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Multi-call Function: Error Handling
+	 *
+	 * @param	mixed
+	 * @return	object
+	 */
+	public function multicall_error($err)
+	{
+		$str = is_string($err) ? $this->xmlrpcstr["multicall_${err}"] : $err->faultString();
+		$code = is_string($err) ? $this->xmlrpcerr["multicall_${err}"] : $err->faultCode();
+
+		$struct['faultCode'] = new XML_RPC_Values($code, 'int');
+		$struct['faultString'] = new XML_RPC_Values($str, 'string');
+
+		return new XML_RPC_Values($struct, 'struct');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Multi-call Function: Processes method
+	 *
+	 * @param	mixed
+	 * @return	object
+	 */
+	public function do_multicall($call)
+	{
+		if ($call->kindOf() !== 'struct')
+		{
+			return $this->multicall_error('notstruct');
+		}
+		elseif ( ! $methName = $call->me['struct']['methodName'])
+		{
+			return $this->multicall_error('nomethod');
+		}
+
+		list($scalar_value, $scalar_type) = array(reset($methName->me), key($methName->me));
+		$scalar_type = $scalar_type === $this->xmlrpcI4 ? $this->xmlrpcInt : $scalar_type;
+
+		if ($methName->kindOf() !== 'scalar' OR $scalar_type !== 'string')
+		{
+			return $this->multicall_error('notstring');
+		}
+		elseif ($scalar_value === 'system.multicall')
+		{
+			return $this->multicall_error('recursion');
+		}
+		elseif ( ! $params = $call->me['struct']['params'])
+		{
+			return $this->multicall_error('noparams');
+		}
+		elseif ($params->kindOf() !== 'array')
+		{
+			return $this->multicall_error('notarray');
+		}
+
+		list($b, $a) = array(reset($params->me), key($params->me));
+
+		$msg = new XML_RPC_Message($scalar_value);
+		for ($i = 0, $numParams = count($b); $i < $numParams; $i++)
+		{
+			$msg->params[] = $params->me['array'][$i];
+		}
+
+		$result = $this->_execute($msg);
+
+		if ($result->faultCode() !== 0)
+		{
+			return $this->multicall_error($result);
+		}
+
+		return new XML_RPC_Values(array($result->value()), 'array');
+	}
+
+}
diff --git a/system/libraries/Zip.php b/system/libraries/Zip.php
new file mode 100644
index 00000000..b54d695d
--- /dev/null
+++ b/system/libraries/Zip.php
@@ -0,0 +1,530 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Zip Compression Class
+ *
+ * This class is based on a library I found at Zend:
+ * https://www.zend.com/codex.php?id=696&single=1
+ *
+ * The original library is a little rough around the edges so I
+ * refactored it and added several additional methods -- Rick Ellis
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Encryption
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/zip.html
+ */
+class CI_Zip {
+
+	/**
+	 * Zip data in string form
+	 *
+	 * @var string
+	 */
+	public $zipdata = '';
+
+	/**
+	 * Zip data for a directory in string form
+	 *
+	 * @var string
+	 */
+	public $directory = '';
+
+	/**
+	 * Number of files/folder in zip file
+	 *
+	 * @var int
+	 */
+	public $entries = 0;
+
+	/**
+	 * Number of files in zip
+	 *
+	 * @var int
+	 */
+	public $file_num = 0;
+
+	/**
+	 * relative offset of local header
+	 *
+	 * @var int
+	 */
+	public $offset = 0;
+
+	/**
+	 * Reference to time at init
+	 *
+	 * @var int
+	 */
+	public $now;
+
+	/**
+	 * The level of compression
+	 *
+	 * Ranges from 0 to 9, with 9 being the highest level.
+	 *
+	 * @var	int
+	 */
+	public $compression_level = 2;
+
+	/**
+	 * mbstring.func_overload flag
+	 *
+	 * @var	bool
+	 */
+	protected static $func_overload;
+
+	/**
+	 * Initialize zip compression class
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+
+		$this->now = time();
+		log_message('info', 'Zip Compression Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Directory
+	 *
+	 * Lets you add a virtual directory into which you can place files.
+	 *
+	 * @param	mixed	$directory	the directory name. Can be string or array
+	 * @return	void
+	 */
+	public function add_dir($directory)
+	{
+		foreach ((array) $directory as $dir)
+		{
+			if ( ! preg_match('|.+/$|', $dir))
+			{
+				$dir .= '/';
+			}
+
+			$dir_time = $this->_get_mod_time($dir);
+			$this->_add_dir($dir, $dir_time['file_mtime'], $dir_time['file_mdate']);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get file/directory modification time
+	 *
+	 * If this is a newly created file/dir, we will set the time to 'now'
+	 *
+	 * @param	string	$dir	path to file
+	 * @return	array	filemtime/filemdate
+	 */
+	protected function _get_mod_time($dir)
+	{
+		// filemtime() may return false, but raises an error for non-existing files
+		$date = file_exists($dir) ? getdate(filemtime($dir)) : getdate($this->now);
+
+		return array(
+			'file_mtime' => ($date['hours'] << 11) + ($date['minutes'] << 5) + $date['seconds'] / 2,
+			'file_mdate' => (($date['year'] - 1980) << 9) + ($date['mon'] << 5) + $date['mday']
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Directory
+	 *
+	 * @param	string	$dir	the directory name
+	 * @param	int	$file_mtime
+	 * @param	int	$file_mdate
+	 * @return	void
+	 */
+	protected function _add_dir($dir, $file_mtime, $file_mdate)
+	{
+		$dir = str_replace('\\', '/', $dir);
+
+		$this->zipdata .=
+			"\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00"
+			.pack('v', $file_mtime)
+			.pack('v', $file_mdate)
+			.pack('V', 0) // crc32
+			.pack('V', 0) // compressed filesize
+			.pack('V', 0) // uncompressed filesize
+			.pack('v', self::strlen($dir)) // length of pathname
+			.pack('v', 0) // extra field length
+			.$dir
+			// below is "data descriptor" segment
+			.pack('V', 0) // crc32
+			.pack('V', 0) // compressed filesize
+			.pack('V', 0); // uncompressed filesize
+
+		$this->directory .=
+			"\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00"
+			.pack('v', $file_mtime)
+			.pack('v', $file_mdate)
+			.pack('V',0) // crc32
+			.pack('V',0) // compressed filesize
+			.pack('V',0) // uncompressed filesize
+			.pack('v', self::strlen($dir)) // length of pathname
+			.pack('v', 0) // extra field length
+			.pack('v', 0) // file comment length
+			.pack('v', 0) // disk number start
+			.pack('v', 0) // internal file attributes
+			.pack('V', 16) // external file attributes - 'directory' bit set
+			.pack('V', $this->offset) // relative offset of local header
+			.$dir;
+
+		$this->offset = self::strlen($this->zipdata);
+		$this->entries++;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Data to Zip
+	 *
+	 * Lets you add files to the archive. If the path is included
+	 * in the filename it will be placed within a directory. Make
+	 * sure you use add_dir() first to create the folder.
+	 *
+	 * @param	mixed	$filepath	A single filepath or an array of file => data pairs
+	 * @param	string	$data		Single file contents
+	 * @return	void
+	 */
+	public function add_data($filepath, $data = NULL)
+	{
+		if (is_array($filepath))
+		{
+			foreach ($filepath as $path => $data)
+			{
+				$file_data = $this->_get_mod_time($path);
+				$this->_add_data($path, $data, $file_data['file_mtime'], $file_data['file_mdate']);
+			}
+		}
+		else
+		{
+			$file_data = $this->_get_mod_time($filepath);
+			$this->_add_data($filepath, $data, $file_data['file_mtime'], $file_data['file_mdate']);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Data to Zip
+	 *
+	 * @param	string	$filepath	the file name/path
+	 * @param	string	$data	the data to be encoded
+	 * @param	int	$file_mtime
+	 * @param	int	$file_mdate
+	 * @return	void
+	 */
+	protected function _add_data($filepath, $data, $file_mtime, $file_mdate)
+	{
+		$filepath = str_replace('\\', '/', $filepath);
+
+		$uncompressed_size = self::strlen($data);
+		$crc32  = crc32($data);
+		$gzdata = self::substr(gzcompress($data, $this->compression_level), 2, -4);
+		$compressed_size = self::strlen($gzdata);
+
+		$this->zipdata .=
+			"\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00"
+			.pack('v', $file_mtime)
+			.pack('v', $file_mdate)
+			.pack('V', $crc32)
+			.pack('V', $compressed_size)
+			.pack('V', $uncompressed_size)
+			.pack('v', self::strlen($filepath)) // length of filename
+			.pack('v', 0) // extra field length
+			.$filepath
+			.$gzdata; // "file data" segment
+
+		$this->directory .=
+			"\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00"
+			.pack('v', $file_mtime)
+			.pack('v', $file_mdate)
+			.pack('V', $crc32)
+			.pack('V', $compressed_size)
+			.pack('V', $uncompressed_size)
+			.pack('v', self::strlen($filepath)) // length of filename
+			.pack('v', 0) // extra field length
+			.pack('v', 0) // file comment length
+			.pack('v', 0) // disk number start
+			.pack('v', 0) // internal file attributes
+			.pack('V', 32) // external file attributes - 'archive' bit set
+			.pack('V', $this->offset) // relative offset of local header
+			.$filepath;
+
+		$this->offset = self::strlen($this->zipdata);
+		$this->entries++;
+		$this->file_num++;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Read the contents of a file and add it to the zip
+	 *
+	 * @param	string	$path
+	 * @param	bool	$archive_filepath
+	 * @return	bool
+	 */
+	public function read_file($path, $archive_filepath = FALSE)
+	{
+		if (file_exists($path) && FALSE !== ($data = file_get_contents($path)))
+		{
+			if (is_string($archive_filepath))
+			{
+				$name = str_replace('\\', '/', $archive_filepath);
+			}
+			else
+			{
+				$name = str_replace('\\', '/', $path);
+
+				if ($archive_filepath === FALSE)
+				{
+					$name = preg_replace('|.*/(.+)|', '\\1', $name);
+				}
+			}
+
+			$this->add_data($name, $data);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Read a directory and add it to the zip.
+	 *
+	 * This function recursively reads a folder and everything it contains (including
+	 * sub-folders) and creates a zip based on it. Whatever directory structure
+	 * is in the original file path will be recreated in the zip file.
+	 *
+	 * @param	string	$path	path to source directory
+	 * @param	bool	$preserve_filepath
+	 * @param	string	$root_path
+	 * @return	bool
+	 */
+	public function read_dir($path, $preserve_filepath = TRUE, $root_path = NULL)
+	{
+		$path = rtrim($path, '/\\').DIRECTORY_SEPARATOR;
+		if ( ! $fp = @opendir($path))
+		{
+			return FALSE;
+		}
+
+		// Set the original directory root for child dir's to use as relative
+		if ($root_path === NULL)
+		{
+			$root_path = str_replace(array('\\', '/'), DIRECTORY_SEPARATOR, dirname($path)).DIRECTORY_SEPARATOR;
+		}
+
+		while (FALSE !== ($file = readdir($fp)))
+		{
+			if ($file === '.' OR $file === '..')
+			{
+				continue;
+			}
+
+			if (is_dir($path.$file))
+			{
+				$this->read_dir($path.$file.DIRECTORY_SEPARATOR, $preserve_filepath, $root_path);
+			}
+			elseif (FALSE !== ($data = file_get_contents($path.$file)))
+			{
+				$name = str_replace(array('\\', '/'), DIRECTORY_SEPARATOR, $path);
+				if ($preserve_filepath === FALSE)
+				{
+					$name = str_replace($root_path, '', $name);
+				}
+
+				$this->add_data($name.$file, $data);
+			}
+		}
+
+		closedir($fp);
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the Zip file
+	 *
+	 * @return	string	(binary encoded)
+	 */
+	public function get_zip()
+	{
+		// Is there any data to return?
+		if ($this->entries === 0)
+		{
+			return FALSE;
+		}
+
+		// @see https://github.com/bcit-ci/CodeIgniter/issues/5864
+		$footer = $this->directory."\x50\x4b\x05\x06\x00\x00\x00\x00"
+			.pack('v', $this->entries) // total # of entries "on this disk"
+			.pack('v', $this->entries) // total # of entries overall
+			.pack('V', self::strlen($this->directory)) // size of central dir
+			.pack('V', self::strlen($this->zipdata)) // offset to start of central dir
+			."\x00\x00"; // .zip file comment length
+		return $this->zipdata.$footer;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Write File to the specified directory
+	 *
+	 * Lets you write a file
+	 *
+	 * @param	string	$filepath	the file name
+	 * @return	bool
+	 */
+	public function archive($filepath)
+	{
+		if ( ! ($fp = @fopen($filepath, 'w+b')))
+		{
+			return FALSE;
+		}
+
+		flock($fp, LOCK_EX);
+
+		for ($result = $written = 0, $data = $this->get_zip(), $length = self::strlen($data); $written < $length; $written += $result)
+		{
+			if (($result = fwrite($fp, self::substr($data, $written))) === FALSE)
+			{
+				break;
+			}
+		}
+
+		flock($fp, LOCK_UN);
+		fclose($fp);
+
+		return is_int($result);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Download
+	 *
+	 * @param	string	$filename	the file name
+	 * @return	void
+	 */
+	public function download($filename = 'backup.zip')
+	{
+		if ( ! preg_match('|.+?\.zip$|', $filename))
+		{
+			$filename .= '.zip';
+		}
+
+		get_instance()->load->helper('download');
+		$get_zip = $this->get_zip();
+		$zip_content =& $get_zip;
+
+		force_download($filename, $zip_content);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize Data
+	 *
+	 * Lets you clear current zip data. Useful if you need to create
+	 * multiple zips with different data.
+	 *
+	 * @return	CI_Zip
+	 */
+	public function clear_data()
+	{
+		$this->zipdata = '';
+		$this->directory = '';
+		$this->entries = 0;
+		$this->file_num = 0;
+		$this->offset = 0;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return (self::$func_overload)
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe substr()
+	 *
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int	$length
+	 * @return	string
+	 */
+	protected static function substr($str, $start, $length = NULL)
+	{
+		if (self::$func_overload)
+		{
+			return mb_substr($str, $start, $length, '8bit');
+		}
+
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/libraries/index.html b/system/libraries/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/libraries/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>

From 2f76db0f14c9e84e2859c58a4ea40e1e4b7de4f4 Mon Sep 17 00:00:00 2001
From: Caine85 <Caine85@users.noreply.github.com>
Date: Sat, 28 Aug 2021 12:57:56 +0200
Subject: [PATCH 36/72] Update console.md

Missing commands params.
---
 docs/console.md | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/docs/console.md b/docs/console.md
index e5ed6709..b5bcf51e 100644
--- a/docs/console.md
+++ b/docs/console.md
@@ -23,13 +23,13 @@ The entry point for the CLI commands is the root `index.php` file which means th
 ##### Migrate 
 
 ```
-php index.php migrate
+php index.php console migrate
 ```
 
 This command will migrate the database to the latest state. 
 
 ```
-php index.php migrate fresh
+php index.php console migrate fresh
 ```
 
 This command will reset any change made by the previous migrations and start from the beginning. 
@@ -37,7 +37,7 @@ This command will reset any change made by the previous migrations and start fro
 ##### Seed
 
 ```
-php index.php seed
+php index.php console seed
 ```
 
 This command will add a test admin, provider, customer and service in the app, so that you can already run some tests.  
@@ -45,7 +45,7 @@ This command will add a test admin, provider, customer and service in the app, s
 ##### Install
 
 ```
-php index.php install
+php index.php console install
 ```
 
 This command will perform a CLI installation of Easy!Appointments. 
@@ -55,14 +55,14 @@ You can run this after your are done configuring your app from the root `config.
 ##### Backup 
 
 ```
-php index.php backup
+php index.php console backup
 ```
 
 This command will create a backup of the application data in the `storage/backups` directory. 
 
 
 ```
-php index.php backup /path/to/backup/folter
+php index.php console backup /path/to/backup/folter
 ``` 
 
 You can also provide a custom directory for your backup files. 
@@ -71,7 +71,7 @@ You can also provide a custom directory for your backup files.
 ##### Sync
 
 ```
-php index.php sync
+php index.php console sync
 ``` 
 
 This command will trigger the calendar synchronization for all the system providers. 
@@ -84,7 +84,7 @@ This way the app provider schedules will always be updated.
 ##### Help 
 
 ```
-php index.php help
+php index.php console help
 ``` 
 
 This command will give more information about the console capabilities.

From a17c2346984309d8c893e0cc91646adba1f35212 Mon Sep 17 00:00:00 2001
From: om-ha <30494124+om-ha@users.noreply.github.com>
Date: Sat, 28 Aug 2021 14:50:01 +0300
Subject: [PATCH 37/72] FIX Providers API incorrect `array_key_exists`

- `array_key_exists` should search for they key `working_plan` within `$provider['settings']` and not `$provider['settings']['working_plan']`
---
 application/controllers/api/v1/Providers.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/application/controllers/api/v1/Providers.php b/application/controllers/api/v1/Providers.php
index a3739968..b6417d5b 100644
--- a/application/controllers/api/v1/Providers.php
+++ b/application/controllers/api/v1/Providers.php
@@ -102,7 +102,7 @@ class Providers extends API_V1_Controller {
                 throw new Exception('No settings property provided.');
             }
 
-            if ( ! array_key_exists('working_plan', $provider['settings']['working_plan']))
+            if ( ! array_key_exists('working_plan', $provider['settings']))
             {
                 $provider['settings']['working_plan'] = $this->settings_model->get_setting('company_working_plan');
             }

From 0d708077ca21df5524a14ce33a5efc39334182e8 Mon Sep 17 00:00:00 2001
From: Vasileios Lourdas <dev@lourdas.eu>
Date: Sun, 26 Sep 2021 20:01:24 +0300
Subject: [PATCH 38/72] Updated Greek language file.

Fixed a few typos and translated a couple of messages.
---
 .../language/greek/translations_lang.php      | 44 +++++++++----------
 1 file changed, 22 insertions(+), 22 deletions(-)

diff --git a/application/language/greek/translations_lang.php b/application/language/greek/translations_lang.php
index 3c40f478..8477b3da 100755
--- a/application/language/greek/translations_lang.php
+++ b/application/language/greek/translations_lang.php
@@ -3,7 +3,7 @@
 $lang['page_title'] = 'Κράτηση Ραντεβού Με';
 $lang['service_and_provider'] = 'Υπηρεσία & Πάροχος';
 $lang['select_service'] = 'Επιλογή Υπηρεσίας';
-$lang['select_provider'] = 'Επιλογή Πάροχου';
+$lang['select_provider'] = 'Επιλογή Παρόχου';
 $lang['duration'] = 'Διάρκεια';
 $lang['minutes'] = 'Λεπτά';
 $lang['price'] = 'Τιμή';
@@ -21,8 +21,8 @@ $lang['address'] = 'Διεύθυνση';
 $lang['city'] = 'Πόλη';
 $lang['zip_code'] = 'Ταχυδρομικός Κώδικας';
 $lang['notes'] = 'Σημειώσεις';
-$lang['language'] = 'Language';
-$lang['no_language'] = 'No language';
+$lang['language'] = 'Γλώσσα';
+$lang['no_language'] = 'Χωρίς γλώσσα';
 $lang['fields_are_required'] = 'Τα πεδία με * είναι υποχρεωτικά.';
 $lang['appointment_confirmation'] = 'Επιβεβαίωση Ραντεβού';
 $lang['confirm'] = 'Επιβεβαίωση';
@@ -53,8 +53,8 @@ $lang['appointment_added_to_google_calendar'] = 'Το ραντεβού έχει
 $lang['view_appointment_in_google_calendar'] = 'Πατήστε εδώ για να δείτε το ραντεβού στο Google Calendar.';
 $lang['appointment_added_to_your_plan'] = 'Ένα νέο ραντεβού έχει προστεθεί στο πλάνο σας.';
 $lang['appointment_link_description'] = 'Μπορείτε να πραγματοποιήσετε αλλαγές πατώντας στον σύνδεσμο του ραντεβού.';
-$lang['appointment_locked'] = 'Modification impossible.';
-$lang['appointment_locked_message'] = 'The appointment cannot be changed less than {$limit} hours in advance.';
+$lang['appointment_locked'] = 'Αδύνατη η τροποποίηση.';
+$lang['appointment_locked_message'] = 'Το ραντεβού δεν μπορεί να αλλάξει σε διάστημα λιγότερο πριν από {$limit} ώρες.';
 $lang['appointment_not_found'] = 'Το Ραντεβού Δεν Βρέθηκε.';
 $lang['appointment_does_not_exist_in_db'] = 'Το ραντεβού που ζητήσατε δεν υπάρχει πλέον στην βάση δεδομένων του συστήματος.';
 $lang['display_calendar'] = 'Προβολή Ημερολογίου';
@@ -65,7 +65,7 @@ $lang['log_out'] = 'Αποσύνδεση';
 $lang['synchronize'] = 'Συγχρονισμός';
 $lang['enable_sync'] = 'Ενεργοποίηση Συγχρ.';
 $lang['disable_sync'] = 'Απενεργοποίηση Συγχρ.';
-$lang['disable_sync_prompt'] = 'Are you sure that you want to disable the calendar synchronization?';
+$lang['disable_sync_prompt'] = 'Είστε σίγουροι ότι επιθυμείτε την απενεργοποίηση συγχρονισμού του ημερολογίου;';
 $lang['reload'] = 'Επαναφόρτωση';
 $lang['appointment'] = 'Ραντεβού';
 $lang['unavailable'] = 'Μη Διαθέσιμος';
@@ -78,15 +78,15 @@ $lang['add'] = 'Προσθήκη';
 $lang['edit'] = 'Επεξεργασία';
 $lang['hello'] = 'Χαίρετε';
 $lang['all_day'] = 'Ολοήμερο';
-$lang['manage_appointment_record_hint'] = 'Διαχειριστείτε όλες τις εγγραφές ραντεβού των διαθέσιμων πάροχων και υπηρεσιών.';
+$lang['manage_appointment_record_hint'] = 'Διαχειριστείτε όλες τις εγγραφές ραντεβού των διαθέσιμων παρόχων και υπηρεσιών.';
 $lang['select_filter_item_hint'] = 'Επιλέξτε τον πάροχο ή την υπηρεσία και δείτε τα ραντεβού στο ημερολόγιο.';
-$lang['enable_appointment_sync_hint'] = 'Ενεργοποιείστε τον συγχρονισμό ραντεβού με τον λογαριασμό Google Calendar του πάροχου.';
-$lang['manage_customers_hint'] = 'Διαχειριστείτε του καταχωρημένους πελάτες και δείτε το ιστορικό των κρατήσεων τους.';
+$lang['enable_appointment_sync_hint'] = 'Ενεργοποιείστε τον συγχρονισμό ραντεβού με τον λογαριασμό Google Calendar του παρόχου.';
+$lang['manage_customers_hint'] = 'Διαχειριστείτε τους καταχωρημένους πελάτες και δείτε το ιστορικό των κρατήσεών τους.';
 $lang['manage_services_hint'] = 'Διαχειριστείτε όλες τις διαθέσιμες υπηρεσίες και κατηγορίες του συστήματος.';
 $lang['manage_users_hint'] = 'Διαχειριστείτε τους χρήστες του backend (διαχειριστές, πάροχοι, γραμματείς).';
 $lang['settings_hint'] = 'Επεξεργαστείτε τις ρυθμίσεις του συστήματος ή του τρέχοντος χρήστη.';
 $lang['log_out_hint'] = 'Αποσυνδεθείτε από το σύστημα.';
-$lang['unavailable_periods_hint'] = 'Κατά την διάρκεια των μη διαθέσιμων διαστημάτων οι πάροχοι δεν θα δέχονται νέα ραντεβού.';
+$lang['unavailable_periods_hint'] = 'Κατά την διάρκεια των μη διαθέσιμων διαστημάτων οι πάροχοι δε θα δέχονται νέα ραντεβού.';
 $lang['new_appointment_hint'] = 'Δημιουργείστε ένα νέο ραντεβού και αποθηκεύστε το στην βάση δεδομένων.';
 $lang['reload_appointments_hint'] = 'Επαναφορτώστε τα ραντεβού του ημερολογίου.';
 $lang['trigger_google_sync_hint'] = 'Εκκινήστε την διαδικασία συγχρονισμού με το Google Calendar.';
@@ -100,7 +100,7 @@ $lang['select'] = 'Επιλογή';
 $lang['hide'] = 'Απόκρυψη';
 $lang['type_to_filter_customers'] = 'Πληκτρολογήστε για να φιλτράρετε τους πελάτες.';
 $lang['clear_fields_add_existing_customer_hint'] = 'Καθαρισμός των πεδίων και εισαγωγή νέου πελάτη.';
-$lang['pick_existing_customer_hint'] = 'Επιλογή ενός υπάρχων πελάτη.';
+$lang['pick_existing_customer_hint'] = 'Επιλογή ενός υπάρχοντος πελάτη.';
 $lang['new_appointment_title'] = 'Νέο Ραντεβού';
 $lang['edit_appointment_title'] = 'Επεξεργασία Ραντεβού';
 $lang['delete_appointment_title'] = 'Διαγραφή Ραντεβού';
@@ -110,7 +110,7 @@ $lang['new_unavailable_title'] = 'Νέα Μη Διαθέσιμη Περίοδο
 $lang['edit_unavailable_title'] = 'Επεξεργασία Μη Διαθέσιμης Περιόδου';
 $lang['unavailable_saved'] = 'Η μη διαθέσιμη περίοδος αποθηκεύτηκε επιτυχώς.';
 $lang['start_date_before_end_error'] = 'Η ημερομηνία εκκίνησης είναι μεγαλύτερα από την ημερομηνία λήξης.';
-$lang['invalid_duration'] = 'Invalid duration.';
+$lang['invalid_duration'] = 'Μη έγκυρη διάρκεια.';
 $lang['invalid_email'] = 'Λανθασμένη διεύθυνση email.';
 $lang['customers'] = 'Πελάτες';
 $lang['details'] = 'Λεπτομέρειες';
@@ -166,17 +166,17 @@ $lang['company_name_hint'] = 'Το όνομα της εταιρείας θα ε
 $lang['company_email'] = 'Email Εταιρείας';
 $lang['company_email_hint'] = 'Αυτή θα είναι η ηλεκτρονική διεύθυνση της εταιρείας. Θα χρησιμοποιείται ως η διεύθυνση του αποστολέα για τα email του συστήματος (απαιτείται).';
 $lang['company_link'] = 'Σύνδεσμος Εταιρείας';
-$lang['company_link_hint'] = 'Ο σύνδεσμος εταιρείας θα πρέπει να δείχνει στην επίσιμη ιστοσελίδα της εταιρείας (απαιτείται).';
+$lang['company_link_hint'] = 'Ο σύνδεσμος εταιρείας θα πρέπει να δείχνει στην επίσημη ιστοσελίδα της εταιρείας (απαιτείται).';
 $lang['go_to_booking_page'] = 'Πλοήγηση Στην Σελίδα Κράτησης';
 $lang['settings_saved'] = 'Οι ρυθμίσεις αποθηκεύτηκαν επιτυχώς.';
 $lang['general'] = 'Γενικά';
 $lang['business_logic'] = 'Επιχειρηματική Λογική';
 $lang['current_user'] = 'Τρέχων Χρήστης';
 $lang['about_app'] = 'Σχετικά με το Easy!Appointments';
-$lang['edit_working_plan_hint'] = 'Σημειώστε παρακάτω τις μέρες και ώρες στις οποίες η εταιρεία θα δέχεται τα ραντεβού. Θα είστε σε θέση να τοποθετήσετε ραντεβού σε μη εργάσιμες ώρες αλλά οι πελάτες δεν θα μπορούν από μόνοι τους να να κάνουν κράτηση σε μη εργάσιμες χρονικές περιόδους. Αυτό το πλάνο εργασίας θα είναι η προεπιλεγμένη ρύθμιση για όλες τις νέες εγγραφές πάροχων υπηρεσιών αλλά θα είστε σε θέση να αλλάξετε το πλάνο του κάθε πάροχου ξεχωριστά, επεξεργάζοντας την εγγραφή του. Μετά από αυτήν την διαδικασία προσθέστε τα διαστήματα τα οποία αντιστοιχούν στα διαλείμματα.';
-$lang['edit_breaks_hint'] = 'Προσθέστε τα εργασιακά διαλείμματα στην ημέρα που αντιστοιχούν. Αυτά τα διαλείμματα θα εφαρμόζονται σε όλους τους νέους πάροχους.';
+$lang['edit_working_plan_hint'] = 'Σημειώστε παρακάτω τις μέρες και ώρες στις οποίες η εταιρεία θα δέχεται τα ραντεβού. Θα είστε σε θέση να τοποθετήσετε ραντεβού σε μη εργάσιμες ώρες αλλά οι πελάτες δεν θα μπορούν από μόνοι τους να κάνουν κράτηση σε μη εργάσιμες χρονικές περιόδους. Αυτό το πλάνο εργασίας θα είναι η προεπιλεγμένη ρύθμιση για όλες τις νέες εγγραφές παρόχων υπηρεσιών αλλά θα είστε σε θέση να αλλάξετε το πλάνο του κάθε παρόχου ξεχωριστά, επεξεργάζοντας την εγγραφή του. Μετά από αυτήν την διαδικασία προσθέστε τα διαστήματα τα οποία αντιστοιχούν στα διαλείμματα.';
+$lang['edit_breaks_hint'] = 'Προσθέστε τα εργασιακά διαλείμματα στην ημέρα που αντιστοιχούν. Αυτά τα διαλείμματα θα εφαρμόζονται σε όλους τους νέους παρόχους.';
 $lang['book_advance_timeout'] = 'Χρονικό Όριο Πριν Από Κράτηση';
-$lang['book_advance_timeout_hint'] = 'Ορίστε το χρονικό περιθώριο (σε λεπτά) πριν οι πελάτες να μπορέσουν να κρατήσουν ή να τροποποιήσουν τα ραντεβού  με την εταιρεία.';
+$lang['book_advance_timeout_hint'] = 'Ορίστε το χρονικό περιθώριο (σε λεπτά) πριν οι πελάτες να μπορέσουν να κρατήσουν ή να τροποποιήσουν τα ραντεβού με την εταιρεία.';
 $lang['timeout_minutes'] = 'Χρονικό Όριο (Λεπτά)';
 $lang['about_app_info'] = 'Το Easy!Appointments είναι μια εξαιρετικά προσαρμόσιμη διαδικτυακή εφαρμογή η οποία επιτρέπει στους πελάτες σας να κλείνουν ραντεβού με εσάς μέσω του διαδικτύου. Επιπλέον παρέχει την δυνατότητα να συγχρονίσετε τα δεδομένα σας με το Google Calendar έτσι ώστε να μπορέσετε να τα χρησιμοποιήσετε με άλλες υπηρεσίες.';
 $lang['current_version'] = 'Τρέχουσα Έκδοση';
@@ -196,7 +196,7 @@ $lang['enter_username_here'] = 'Εισάγετε το όνομα χρήστη σ
 $lang['enter_password_here'] = 'Εισάγετε τον κωδικό σας εδώ ...';
 $lang['login'] = 'Σύνδεση';
 $lang['forgot_your_password'] = 'Ξεχάσατε τον κωδικό σας;';
-$lang['login_failed'] = 'Η σύνδεση απέτυχε, παρακαλώ εισάγετε τα σωστά στοιχεία σύνδεσης  και δοκιμάστε ξανά.';
+$lang['login_failed'] = 'Η σύνδεση απέτυχε, παρακαλώ εισάγετε τα σωστά στοιχεία σύνδεσης και δοκιμάστε ξανά.';
 $lang['type_username_and_email_for_new_password'] = 'Εισάγετε το όνομα χρήστη και την διεύθυνση email για να λάβετε τον καινούργιο κωδικό πρόσβασης.';
 $lang['enter_email_here'] = 'Εισάγετε το email σας εδώ ...';
 $lang['regenerate_password'] = 'Παραγωγή Κωδικού';
@@ -209,7 +209,7 @@ $lang['delete_admin'] = 'Διαγραφή Διαχειριστή';
 $lang['delete_customer'] = 'Διαγραφή Πελάτη';
 $lang['delete_service'] = 'Διαγραφή Υπηρεσίας';
 $lang['delete_category'] = 'Διαγραφή Κατηγορίας Υπηρεσιών';
-$lang['delete_provider'] = 'Διαγραφή Πάροχου';
+$lang['delete_provider'] = 'Διαγραφή Παρόχου';
 $lang['delete_secretary'] = 'Διαγραφή Γραμματέα';
 $lang['delete_appointment'] = 'Διαγραφή Ραντεβού';
 $lang['delete_unavailable'] = 'Διαγραφή Μη Διαθέσιμης Περιόδου';
@@ -281,8 +281,8 @@ $lang['date_format'] = 'Μορφή Ημερομηνίας';
 $lang['date_format_hint'] = 'Αλλάξτε την μορφή ημερομηνίας (D - Ημέρα, M - Μήνας, Y - Χρόνος).';
 $lang['time_format'] = 'Μορφή Ώρας';
 $lang['time_format_hint'] = 'Αλλάξτε την μορφή ώρας (H - Ώρα, M - Λεπτά).';
-$lang['first_weekday'] = 'First day of week';
-$lang['first_weekday_hint'] = 'Set the first day of the calendar week.';
+$lang['first_weekday'] = 'Πρώτη ημέρα της εβδομάδας';
+$lang['first_weekday_hint'] = 'Καθορίστε την πρώτη ημέρα της εβδομάδας στο ημερολόγιο.';
 $lang['google_analytics_code_hint'] = 'Προσθέστε τον Google Analytics ID σας το οποίο θα συμπεριληφθεί στην σελίδα κράτησης.';
 $lang['availabilities_type'] = 'Τύπος Διαθεσιμοτήτων';
 $lang['flexible'] = 'Ευέλικτος';
@@ -322,11 +322,11 @@ $lang['timezone'] = 'Ζώνη Ώρας';
 $lang['overwrite_existing_working_plans'] = 'Αυτό θα αντικαταστήσει το υπάρχον πλάνο εργασίας του παρόχου, είστε σίγουρος ότι θέλετε να συνεχίσετε;';
 $lang['working_plans_got_updated'] = 'Όλα τα πλάνα εργασίας έχουν ενημερωθεί.';
 $lang['apply_to_all_providers'] = 'Εφαρμογή σε όλους τος παρόχους';
-$lang['display_any_provider'] = 'Προβολή Οποιοδήποτε Πάροχου';
+$lang['display_any_provider'] = 'Προβολή Οποιοδήποτε Παρόχου';
 $lang['display_any_provider_hint'] = 'Η σελίδα κράτησης θα εμφανίσει μια επιπλέον επιλογή η οποία θα επιτρέπει στους πελάτης να κάνουν κρατήσεις, χωρίς να επιλέξουν κάποιο πάροχο.';
 $lang['load_more'] = 'Φόρτωση Περισσότερων';
 $lang['list'] = 'Λίστα';
-$lang['default'] = 'Προεπιλογμένο';
+$lang['default'] = 'Προεπιλεγμένο';
 $lang['table'] = 'Πίνακας';
 $lang['date'] = 'Ημερομηνία';
 // End

From d0b5fd170badbe6f5df073b6605dc49ec9041673 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:24:44 +0200
Subject: [PATCH 39/72] Added the system directory to the gulp build.

---
 gulpfile.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gulpfile.js b/gulpfile.js
index 37495bb3..cdd22418 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -36,6 +36,7 @@ gulp.task('package', (done) => {
     fs.copySync('application', 'build/application');
     fs.copySync('assets', 'build/assets');
     fs.copySync('engine', 'build/engine');
+    fs.copySync('system', 'build/system');
 
     fs.ensureDirSync('build/storage/backups');
     fs.copySync('storage/backups/.htaccess', 'build/storage/backups/.htaccess');

From a210c32b734c4cb26ecbe31446bd8f9d844b629f Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:25:44 +0200
Subject: [PATCH 40/72] Czech translation corrections

---
 .../language/czech/translations_lang.php      | 56 +++++++++----------
 1 file changed, 28 insertions(+), 28 deletions(-)

diff --git a/application/language/czech/translations_lang.php b/application/language/czech/translations_lang.php
index 820d8dbc..e8301899 100644
--- a/application/language/czech/translations_lang.php
+++ b/application/language/czech/translations_lang.php
@@ -1,7 +1,7 @@
 <?php defined('BASEPATH') or exit('No direct script access allowed');
 // Czech
 $lang['page_title'] = 'Rezervace schůzky s';
-$lang['service_and_provider'] = 'Výběr služby & poskytovatele';
+$lang['service_and_provider'] = 'Výběr služby a poskytovatele';
 $lang['select_service'] = 'Vyberte službu';
 $lang['select_provider'] = 'Vyberte poskytovatele';
 $lang['duration'] = 'Trvání';
@@ -16,11 +16,13 @@ $lang['first_name'] = 'Jméno';
 $lang['last_name'] = 'Příjmení';
 $lang['email'] = 'Email';
 $lang['phone_number'] = 'Telefonní číslo';
-$lang['phone'] = 'Phone';
+$lang['phone'] = 'Telefon';
 $lang['address'] = 'Adresa';
 $lang['city'] = 'Obec';
 $lang['zip_code'] = 'PSČ';
 $lang['notes'] = 'Poznámky';
+$lang['language'] = 'Jazyk';
+$lang['no_language'] = 'Žádný jazyk';
 $lang['fields_are_required'] = 'Pole označená * jsou povinná.';
 $lang['appointment_confirmation'] = 'Rezervace schůzky';
 $lang['confirm'] = 'Potvrdit';
@@ -36,7 +38,7 @@ $lang['appointment_removed_from_schedule'] = 'Následující schůzka byla odstr
 $lang['appointment_details_was_sent_to_you'] = 'Byl vám odeslán email s informacemi o schůzce.';
 $lang['add_to_google_calendar'] = 'Přidat do Kalendáře Google';
 $lang['appointment_booked'] = 'Vaše schůzka byla úspěšně rezervována.';
-$lang['thank_you_for_appointment'] = 'Děkujeme za vaši rezervaci schůzky s naší společností. Níže jsou zobrazeny informace o schůzce. Změny můžete provést kliknutím na odkaz na schůzku.';
+$lang['thank_you_for_appointment'] = 'Děkujeme za vaši rezervaci schůzky u nás. Níže jsou zobrazeny informace o schůzce. Změny můžete provést kliknutím na odkaz na schůzku.';
 $lang['appointment_details_title'] = 'Informace o schůzce';
 $lang['customer_details_title'] = 'Informace o zákazníkovi';
 $lang['service'] = 'Služba';
@@ -45,12 +47,10 @@ $lang['customer'] = 'Zákazník';
 $lang['start'] = 'Začátek';
 $lang['end'] = 'Konec';
 $lang['name'] = 'Název';
-$lang['phone'] = 'Telefon';
-$lang['address'] = 'Adresa';
 $lang['appointment_link_title'] = 'Odkaz na schůzku';
 $lang['success'] = 'Úspěch.';
 $lang['appointment_added_to_google_calendar'] = 'Vaše schůzka byla přidána do vašeho účtu v Kalendáři Google.';
-$lang['view_appointment_in_google_calendar'] = 'Pro zobrazení vaši schůzky v Kalendáři Google klikněte sem.';
+$lang['view_appointment_in_google_calendar'] = 'Pro zobrazení vaší schůzky v Kalendáři Google klikněte sem.';
 $lang['appointment_added_to_your_plan'] = 'Do vašeho rozvrhu byla přidána nová schůzka.';
 $lang['appointment_link_description'] = 'Editaci můžete provést kliknutím na níže uvedený odkaz na schůzku.';
 $lang['appointment_locked'] = 'Nelze upravit.';
@@ -65,7 +65,7 @@ $lang['log_out'] = 'Odhlášení';
 $lang['synchronize'] = 'Synchronizace';
 $lang['enable_sync'] = 'Povolit synchronizaci';
 $lang['disable_sync'] = 'Zakázat synchronizaci';
-$lang['disable_sync_prompt'] = 'Opravdu chcete vypnout synchronizaci s kalendářem ?';
+$lang['disable_sync_prompt'] = 'Opravdu chcete vypnout synchronizaci s kalendářem?';
 $lang['reload'] = 'Obnovit';
 $lang['appointment'] = 'Schůzka';
 $lang['unavailable'] = 'Nedostupnost';
@@ -92,7 +92,7 @@ $lang['reload_appointments_hint'] = 'Obnovit zobrazení schůzek v kalendáři.'
 $lang['trigger_google_sync_hint'] = 'Zahájit proces synchronizace s Kalendářem Google.';
 $lang['appointment_updated'] = 'Provedené změny schůzky byly úspěšně uloženy.';
 $lang['undo'] = 'Zpět';
-$lang['appointment_details_changed'] = 'Informace schůzky byly změněny.';
+$lang['appointment_details_changed'] = 'Informace o schůzce byly změněny.';
 $lang['appointment_changes_saved'] = 'Provedené změny schůzky byly úspěšně uloženy.';
 $lang['save'] = 'Uložit';
 $lang['new'] = 'Nový';
@@ -109,14 +109,14 @@ $lang['appointment_saved'] = 'Schůzka úspěšně uložena.';
 $lang['new_unavailable_title'] = 'Nové období nedostupnosti';
 $lang['edit_unavailable_title'] = 'Editovat období nedostupnosti';
 $lang['unavailable_saved'] = 'Období nedostupnosti úspěšně uloženo.';
-$lang['start_date_before_end_error'] = 'Datum zahájení je vyšší než datum ukončení.';
+$lang['start_date_before_end_error'] = 'Datum zahájení je pozdější než datum ukončení.';
 $lang['invalid_email'] = 'Neplatná emailová adresa.';
 $lang['invalid_duration'] = 'Neplatné trvání.';
 $lang['customers'] = 'Zákazníci';
 $lang['details'] = 'Základní údaje';
 $lang['no_records_found'] = 'Nebyly nalezeny žádné záznamy...';
 $lang['services'] = 'Služby';
-$lang['duration_minutes'] = 'Doba trvání (Minuty)';
+$lang['duration_minutes'] = 'Doba trvání (minuty)';
 $lang['currency'] = 'Měna';
 $lang['category'] = 'Kategorie';
 $lang['no_category'] = 'Žádná kategorie';
@@ -126,13 +126,13 @@ $lang['admins'] = 'Administrátoři';
 $lang['providers'] = 'Poskytovatelé';
 $lang['secretaries'] = 'Sekretářky';
 $lang['mobile_number'] = 'Mobilní telefon';
-$lang['mobile'] = 'Mobile';
+$lang['mobile'] = 'Mobil';
 $lang['state'] = 'Stát';
 $lang['username'] = 'Uživatelské jméno';
 $lang['password'] = 'Heslo';
 $lang['retype_password'] = 'Potvrzení hesla';
 $lang['receive_notifications'] = 'Odesílat notifikace';
-$lang['passwords_mismatch'] = 'Heslo a potvrzení hesla se neshodují.';
+$lang['passwords_mismatch'] = 'Hesla se neshodují.';
 $lang['admin_saved'] = 'Administrátor úspěšně uložen.';
 $lang['provider_saved'] = 'Poskytovatel úspěšně uložen.';
 $lang['secretary_saved'] = 'Sekretářka úspěšně uložena.';
@@ -160,7 +160,7 @@ $lang['add_breaks_during_each_day'] = 'Definice pracovních přestávek během k
 $lang['day'] = 'Den';
 $lang['days'] = 'Dny';
 $lang['actions'] = 'Akce';
-$lang['reset_working_plan_hint'] = 'Resetovat pracovní plán zpět na defaultní hodnoty.';
+$lang['reset_working_plan_hint'] = 'Resetovat pracovní plán zpět na výchozí hodnoty.';
 $lang['company_name'] = 'Název společnosti';
 $lang['company_name_hint'] = 'Název společnosti, který bude zobrazen všude v systému (povinné).';
 $lang['company_email'] = 'Email společnosti';
@@ -173,15 +173,15 @@ $lang['general'] = 'Obecné';
 $lang['business_logic'] = 'Business logika';
 $lang['current_user'] = 'Přihlášený uživatel';
 $lang['about_app'] = 'O aplikaci Easy!Appointments';
-$lang['edit_working_plan_hint'] = 'Zde označte dny a hodiny kdy bude vaše společnost přijímat rezervace schůzek. Budete mít možnost přizpůsobit schůzky mimo pracovní dobu, ale pro zákazníky tato možnost k dispozici nebude. Tato pracovní doba bude dafultní pro každého nově založeného poskytovatele, přičemž ji bude možné změnit u každého jednotlivého poskytovatele v rámci editace. Poté můžete přidat období přestávek.';
-$lang['edit_breaks_hint'] = 'Zadejte přestávky v rámci každého dne. Definované Přestávky budou použity pro všechny nově založené poskytovatele.';
+$lang['edit_working_plan_hint'] = 'Zde označte dny a hodiny, kdy bude vaše společnost přijímat rezervace schůzek. Budete mít možnost přizpůsobit schůzky mimo pracovní dobu, zákazníci se ale mimo pracovní dobu objednat nemohou. Tato pracovní doba bude výchozí pro každého nově založeného poskytovatele, přičemž ji bude možné změnit u každého jednotlivého poskytovatele v rámci editace. Poté můžete přidat období přestávek.';
+$lang['edit_breaks_hint'] = 'Zadejte přestávky v rámci každého dne. Definované přestávky budou použity pro všechny nově založené poskytovatele.';
 $lang['book_advance_timeout'] = 'Časový limit rezervace';
 $lang['book_advance_timeout_hint'] = 'Definujte časový limit (v minutách), před jehož uplynutím budou moci zákazníci zadat nebo změnit rezervaci schůzky se společností.';
-$lang['timeout_minutes'] = 'Časový limit (Minuty)';
+$lang['timeout_minutes'] = 'Časový limit (minuty)';
 $lang['about_app_info'] = 'Easy!Appointments je vysoce přizpůsobitelná webová aplikace, která vašim zákazníkům umožňuje rezervovat si s vámi schůzky prostřednictvím webu. Navíc poskytuje možnost synchronizovat vaše data s Kalendářem Google, takže je můžete využívat v rámci dalších služeb.';
 $lang['current_version'] = 'Aktuální verze';
 $lang['support'] = 'Podpora';
-$lang['about_app_support'] = 'Pokud při používání Easy!Appointments narazíte na jakékoli problémy můžete odpovědi hledat v oficiální skupině Google. Také můžete založit nový incident na stránce Google Code za účelem podpory dalšího vývoje.';
+$lang['about_app_support'] = 'Pokud při používání Easy!Appointments narazíte na jakékoli problémy, můžete odpovědi hledat v oficiální skupině Google. Také můžete založit nový incident na stránce Google Code za účelem podpory dalšího vývoje.';
 $lang['official_website'] = 'Oficiální stránky';
 $lang['google_plus_community'] = 'Komunita Google+';
 $lang['support_group'] = 'Skupina podpory';
@@ -203,7 +203,7 @@ $lang['regenerate_password'] = 'Znovu vygenerovat heslo';
 $lang['go_to_login'] = 'Zpět na přihlášení';
 $lang['new_password_sent_with_email'] = 'Vaše nové heslo vám bylo zasláno prostřednictvím emailu.';
 $lang['new_account_password'] = 'Nové heslo';
-$lang['new_password_is'] = 'Vaše nové heslo je $password. Prosím, uschovejte tento email pro případ, že byste potřebovali znovu zjistit vaše heslo. Heslo si také můžete změnit v rámci nastavení.';
+$lang['new_password_is'] = 'Vaše nové heslo je $password. Uschovejte prosím tento email pro případ, že byste potřebovali znovu zjistit vaše heslo. Heslo si také můžete změnit v rámci nastavení.';
 $lang['delete_record_prompt'] = 'Opravdu si přejete odstranit tento záznam? Tuto akci nelze vrátit zpět.';
 $lang['delete_admin'] = 'Odstranit administrátora';
 $lang['delete_customer'] = 'Odstranit zákazníka';
@@ -241,7 +241,7 @@ $lang['password_length_notice'] = 'Heslo musí být minimálně $number znaků d
 $lang['general_settings'] = 'Obecná nastavení';
 $lang['personal_information'] = 'Osobní údaje';
 $lang['system_login'] = 'Přihlášení do systému';
-$lang['user_settings_are_invalid'] = 'Uživatelská nastavení nejsou platná! Prosím, zkontrolujte vaše nastavení, a poté akci opakujte.';
+$lang['user_settings_are_invalid'] = 'Uživatelská nastavení nejsou platná! Zkontrolujte prosím vaše nastavení a poté akci opakujte.';
 $lang['add_break'] = 'Přidat přestávku';
 $lang['january'] = 'Leden';
 $lang['february'] = 'Únor';
@@ -264,8 +264,8 @@ $lang['hour'] = 'Hodina';
 $lang['minute'] = 'Minuta';
 $lang['google_sync_completed'] = 'Synchronizace s Google byla úspěšně dokončena.';
 $lang['google_sync_failed'] = 'Synchronizace s Google selhala: nepodařilo se navázat spojení se serverem.';
-$lang['select_google_calendar'] = 'Vyberte Kalednář Google';
-$lang['select_google_calendar_prompt'] = 'Výberte kalendář, do kterého chcete synchronizovat vaše schůzky. Jestliže nechcete vybrat konkrétní kalendář, bude použit defaultní.';
+$lang['select_google_calendar'] = 'Vyberte Kalendář Google';
+$lang['select_google_calendar_prompt'] = 'Výberte kalendář, do kterého chcete synchronizovat vaše schůzky. Jestliže nechcete vybrat konkrétní kalendář, bude použit výchozí.';
 $lang['google_calendar_selected'] = 'Kalendář Google byl úspěšně vybrán.';
 $lang['oops_something_went_wrong'] = 'Oops! Něco se pokazilo.';
 $lang['could_not_add_to_google_calendar'] = 'Vaše schůzka nemohla být přidána do vašeho Kalendáře Google.';
@@ -281,14 +281,14 @@ $lang['date_format'] = 'Formát datumu';
 $lang['date_format_hint'] = 'Změnit zobrazovaný formát datumu (D - datum, M - měsíc, Y - rok).';
 $lang['time_format'] = 'Formát času';
 $lang['time_format_hint'] = 'Změnit zobrazovaný formát času (H - hodiny, M - minuty).';
-$lang['first_weekday'] = 'First day of week';
-$lang['first_weekday_hint'] = 'Set the first day of the calendar week.';
+$lang['first_weekday'] = 'První den v týdnu';
+$lang['first_weekday_hint'] = 'Nastavte první den v kalendářním týdnu.';
 $lang['google_analytics_code_hint'] = 'Přidat do stránky rezervací vaše Google Analytics ID.';
 $lang['availabilities_type'] = 'Typy dostupnosti';
 $lang['flexible'] = 'Flexibilní';
 $lang['fixed'] = 'Fixní';
 $lang['attendants_number'] = 'Počet účastníků';
-$lang['reset_working_plan'] = 'Resetovat pracovní dobu na defaultní hodnoty.';
+$lang['reset_working_plan'] = 'Resetovat pracovní dobu na výchozí hodnoty.';
 $lang['legal_contents'] = 'Právní obsah';
 $lang['cookie_notice'] = 'Cookie upozornění';
 $lang['display_cookie_notice'] = 'Zobrazit Cookie upozornění';
@@ -299,7 +299,7 @@ $lang['terms_and_conditions_content'] = 'Obsah obchodních podmínek';
 $lang['privacy_policy'] = 'Zásady ochrany osobních údajů';
 $lang['display_privacy_policy'] = 'Zobrazit zásady ochrany osobních údajů';
 $lang['privacy_policy_content'] = 'Obsah zásad ochrany osobních údajů';
-$lang['website_using_cookies_to_ensure_best_experience'] = 'Tyto webové stránky používají cookies pro zajištění vaší nejlepší zkušenosti na našich webových stránkách.';
+$lang['website_using_cookies_to_ensure_best_experience'] = 'Tyto webové stránky používají cookies pro zajištění co nejlepšího prožitku na našich webových stránkách.';
 $lang['read_and_agree_to_terms_and_conditions'] = 'Přečetl jsem a souhlasím s {$link}Obchodními podmínkami{/$link}.';
 $lang['read_and_agree_to_privacy_policy'] = 'Přečetl jsem a souhlasím se {$link}Zásadami ochrany osobních údajů{/$link}.';
 $lang['delete_personal_information_hint'] = 'Odstranit ze systému všechny osobní údaje.';
@@ -316,10 +316,10 @@ $lang['add_working_plan_exceptions_during_each_day'] = 'Přidat výjimku z praco
 $lang['add_working_plan_exception'] = 'Přidat výjimku z pracovního plánu';
 $lang['require_phone_number'] = 'Vyžadovat telefonní číslo';
 $lang['require_phone_number_hint'] = 'Pokud je zapnuto, uživatelé a zákazníci musí vyplnit své telefonní číslo při sjednávání schůzky.';
-$lang['check_spam_folder'] = 'Prosím, zkontrolujte svou SPAM schránku, pokud email v nekolika minutách nedorazí.';
-$lang['api_token_hint'] = 'Nastavte bezpečnostní token, aby jste povolili autentizaci tokenem v  API Easy!Appointments.';
+$lang['check_spam_folder'] = 'Zkontrolujte prosím svou SPAM schránku, pokud email v několika minutách nedorazí.';
+$lang['api_token_hint'] = 'Nastavte bezpečnostní token, abyste povolili autentizaci tokenem v API Easy!Appointments.';
 $lang['timezone'] = 'Časová zóna';
-$lang['overwrite_existing_working_plans'] = 'Tímto nahradíte současné pracovní plány. Opravdu jste si jisti, že chcete pokračovat ?';
+$lang['overwrite_existing_working_plans'] = 'Tímto nahradíte současné pracovní plány. Opravdu jste si jisti, že chcete pokračovat?';
 $lang['working_plans_got_updated'] = 'Všechny pracovní plány byly aktualizovány.';
 $lang['apply_to_all_providers'] = 'Použít pro všechny poskytovatele';
 $lang['display_any_provider'] = 'Zobrazit možnost "Jakýkoli poskytovatel"';

From 0c0ac6a0b2bd437bdb3a2fbd1899ea294311e15c Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:26:12 +0200
Subject: [PATCH 41/72] The backend appointment removal is using the
 notifications library

---
 application/controllers/Backend_api.php | 93 +------------------------
 application/libraries/Notifications.php | 11 ++-
 2 files changed, 11 insertions(+), 93 deletions(-)

diff --git a/application/controllers/Backend_api.php b/application/controllers/Backend_api.php
index 4abc641c..e562e19c 100755
--- a/application/controllers/Backend_api.php
+++ b/application/controllers/Backend_api.php
@@ -362,98 +362,9 @@ class Backend_api extends EA_Controller {
             // Delete appointment record from the database.
             $this->appointments_model->delete($this->input->post('appointment_id'));
 
-            // Sync removal with Google Calendar.
-            if ($appointment['id_google_calendar'] != NULL)
-            {
-                try
-                {
-                    $google_sync = $this->providers_model->get_setting('google_sync', $provider['id']);
+            $this->notifications->notify_appointment_deleted($appointment, $service, $provider, $customer, $settings);
 
-                    if ($google_sync == TRUE)
-                    {
-                        $google_token = json_decode($this->providers_model
-                            ->get_setting('google_token', $provider['id']));
-                        $this->google_sync->refresh_token($google_token->refresh_token);
-                        $this->google_sync->delete_appointment($provider, $appointment['id_google_calendar']);
-                    }
-                }
-                catch (Exception $exception)
-                {
-                    $warnings[] = [
-                        'message' => $exception->getMessage(),
-                        'trace' => config('debug') ? $exception->getTrace() : []
-                    ];
-                }
-            }
-
-            // Send notification emails to provider and customer.
-            try
-            {
-                $this->config->load('email');
-
-                $email = new EmailClient($this, $this->config->config);
-
-                $send_provider = $this->providers_model
-                    ->get_setting('notifications', $provider['id']);
-
-                if ((bool)$send_provider === TRUE)
-                {
-                    $email->send_delete_appointment($appointment, $provider,
-                        $service, $customer, $settings, new Email($provider['email']),
-                        new Text($this->input->post('delete_reason')));
-                }
-
-                $send_customer = $this->settings_model->get_setting('customer_notifications');
-
-                if ((bool)$send_customer === TRUE)
-                {
-                    $email->send_delete_appointment($appointment, $provider,
-                        $service, $customer, $settings, new Email($customer['email']),
-                        new Text($this->input->post('delete_reason')));
-                }
-
-                // Notify admins
-                $admins = $this->admins_model->get_batch();
-
-                foreach ($admins as $admin)
-                {
-                    if ( ! $admin['settings']['notifications'] === '0')
-                    {
-                        continue;
-                    }
-
-                    $email->send_delete_appointment($appointment, $provider,
-                        $service, $customer, $settings, new Email($admin['email']),
-                        new Text($this->input->post('cancel_reason')));
-                }
-
-                // Notify secretaries
-                $secretaries = $this->secretaries_model->get_batch();
-
-                foreach ($secretaries as $secretary)
-                {
-                    if ( ! $secretary['settings']['notifications'] === '0')
-                    {
-                        continue;
-                    }
-
-                    if (in_array($provider['id'], $secretary['providers']))
-                    {
-                        continue;
-                    }
-
-                    $email->send_delete_appointment($appointment, $provider,
-                        $service, $customer, $settings, new Email($secretary['email']),
-                        new Text($this->input->post('cancel_reason')));
-                }
-            }
-            catch (Exception $exception)
-            {
-                $warnings[] = [
-                    'message' => $exception->getMessage(),
-                    'trace' => config('debug') ? $exception->getTrace() : []
-                ];
-            }
+            $this->synchronization->sync_appointment_deleted($appointment, $provider);
 
             if (empty($warnings))
             {
diff --git a/application/libraries/Notifications.php b/application/libraries/Notifications.php
index 86ac282e..a691fca1 100644
--- a/application/libraries/Notifications.php
+++ b/application/libraries/Notifications.php
@@ -163,6 +163,13 @@ class Notifications {
         {
             $email = new EmailClient($this->CI, $this->CI->config->config);
 
+            $delete_reason = (string)$this->CI->input->post('delete_reason');
+
+            if ( ! $delete_reason)
+            {
+                $delete_reason = (string)$this->CI->input->post('cancel_reason');
+            }
+
             $send_provider = filter_var($this->CI->providers_model->get_setting('notifications', $provider['id']),
                 FILTER_VALIDATE_BOOLEAN);
 
@@ -170,7 +177,7 @@ class Notifications {
             {
                 $email->send_delete_appointment($appointment, $provider,
                     $service, $customer, $settings, new Email($provider['email']),
-                    new Text($this->CI->input->post('cancel_reason')));
+                    new Text($delete_reason));
             }
 
             $send_customer = filter_var(
@@ -181,7 +188,7 @@ class Notifications {
             {
                 $email->send_delete_appointment($appointment, $provider,
                     $service, $customer, $settings, new Email($customer['email']),
-                    new Text($this->CI->input->post('cancel_reason')));
+                    new Text($delete_reason));
             }
 
             // Notify admins

From 33c2b72fbadf7a80befaa3b3fbecb49cb573fbb7 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:26:29 +0200
Subject: [PATCH 42/72] CSS fix for the custom checkbox switchers

---
 assets/css/backend.css | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/assets/css/backend.css b/assets/css/backend.css
index 7012be4b..41d319a1 100644
--- a/assets/css/backend.css
+++ b/assets/css/backend.css
@@ -267,7 +267,7 @@ body legend {
     margin-bottom: 20px;
 }
 
-.record-details input:read-only,
+.record-details input:read-only:not(.custom-control-input),
 .record-details select:disabled,
 .record-details textarea:read-only {
     opacity: 0.85;

From 566ca1c79e4a5811cfa76bf6c8578586c5a98e38 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:26:48 +0200
Subject: [PATCH 43/72] Added file comment-banner

---
 assets/js/login.js | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/assets/js/login.js b/assets/js/login.js
index 15a33d6d..46a19c24 100644
--- a/assets/js/login.js
+++ b/assets/js/login.js
@@ -1,3 +1,14 @@
+/* ----------------------------------------------------------------------------
+ * Easy!Appointments - Open Source Web Scheduler
+ *
+ * @package     EasyAppointments
+ * @author      A.Tselegidis <alextselegidis@gmail.com>
+ * @copyright   Copyright (c) 2013 - 2020, Alex Tselegidis
+ * @license     http://opensource.org/licenses/GPL-3.0 - GPLv3
+ * @link        http://easyappointments.org
+ * @since       v1.4.0
+ * ---------------------------------------------------------------------------- */
+ 
 $(function () {
     'use strict';
 

From ea4295e1ad5ca0df790229e3500bce2aacf26dec Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:27:08 +0200
Subject: [PATCH 44/72] Replaced the email validation regex with a better one

---
 assets/js/general_functions.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/assets/js/general_functions.js b/assets/js/general_functions.js
index 235120d1..96b1deb2 100755
--- a/assets/js/general_functions.js
+++ b/assets/js/general_functions.js
@@ -227,7 +227,7 @@ window.GeneralFunctions = window.GeneralFunctions || {};
      * @return {Boolean} Returns the validation result.
      */
     exports.validateEmail = function (email) {
-        var re = /^([^\x00-\x20\x22\x28\x29\x2c\x2e\x3a-\x3c\x3e\x40\x5b-\x5d\x7f-\xff]+|\x22([^\x0d\x22\x5c\x80-\xff]|\x5c[\x00-\x7f])*\x22)(\x2e([^\x00-\x20\x22\x28\x29\x2c\x2e\x3a-\x3c\x3e\x40\x5b-\x5d\x7f-\xff]+|\x22([^\x0d\x22\x5c\x80-\xff]|\x5c[\x00-\x7f])*\x22))*\x40([^\x00-\x20\x22\x28\x29\x2c\x2e\x3a-\x3c\x3e\x40\x5b-\x5d\x7f-\xff]+|\x5b([^\x0d\x5b-\x5d\x80-\xff]|\x5c[\x00-\x7f])*\x5d)(\x2e([^\x00-\x20\x22\x28\x29\x2c\x2e\x3a-\x3c\x3e\x40\x5b-\x5d\x7f-\xff]+|\x5b([^\x0d\x5b-\x5d\x80-\xff]|\x5c[\x00-\x7f])*\x5d))*$/;
+        var re = /(?:[a-z0-9!#$%&'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+\/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9]))\.){3}(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])/;
         return re.test(email);
     };
 

From 6fa2451a085a552650ee15aaa45cad92cea1b928 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:27:32 +0200
Subject: [PATCH 45/72] Added missing validation call in system settings

---
 assets/js/backend_settings_system.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/assets/js/backend_settings_system.js b/assets/js/backend_settings_system.js
index 46cb4fd8..afdad951 100644
--- a/assets/js/backend_settings_system.js
+++ b/assets/js/backend_settings_system.js
@@ -29,6 +29,10 @@
      * @param {Array} settings Contains the system settings data.
      */
     SystemSettings.prototype.save = function (settings) {
+        if (!this.validate()) {
+            return; // Validation failed, do not proceed.
+        }
+        
         var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_save_settings';
 
         var data = {

From 53acb6146cb560c5f2df5e3227f4c1900af3a8b4 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:27:50 +0200
Subject: [PATCH 46/72] Mark required the fields of the settings page

---
 application/views/backend/settings.php | 84 ++++++++++++++++++++------
 1 file changed, 65 insertions(+), 19 deletions(-)

diff --git a/application/views/backend/settings.php b/application/views/backend/settings.php
index 6e2669e8..a3030408 100755
--- a/application/views/backend/settings.php
+++ b/application/views/backend/settings.php
@@ -80,7 +80,10 @@
                     <div class="wrapper row">
                         <div class="col-12 col-sm-6">
                             <div class="form-group">
-                                <label for="company-name"><?= lang('company_name') ?> *</label>
+                                <label for="company-name">
+                                    <?= lang('company_name') ?>
+                                    <span class="text-danger">*</span>
+                                </label>
                                 <input id="company-name" data-field="company_name" class="required form-control">
                                 <span class="form-text text-muted">
                                     <?= lang('company_name_hint') ?>
@@ -88,7 +91,10 @@
                             </div>
 
                             <div class="form-group">
-                                <label for="company-email"><?= lang('company_email') ?> *</label>
+                                <label for="company-email">
+                                    <?= lang('company_email') ?>
+                                    <span class="text-danger">*</span>
+                                </label>
                                 <input id="company-email" data-field="company_email" class="required form-control">
                                 <span class="form-text text-muted">
                                     <?= lang('company_email_hint') ?>
@@ -96,7 +102,10 @@
                             </div>
 
                             <div class="form-group">
-                                <label for="company-link"><?= lang('company_link') ?> *</label>
+                                <label for="company-link">
+                                    <?= lang('company_link') ?>
+                                    <span class="text-danger">*</span>
+                                </label>
                                 <input id="company-link" data-field="company_link" class="required form-control">
                                 <span class="form-text text-muted">
                                     <?= lang('company_link_hint') ?>
@@ -402,77 +411,112 @@
                         <input type="hidden" id="user-id">
 
                         <div class="form-group">
-                            <label for="first-name"><?= lang('first_name') ?> *</label>
+                            <label for="first-name">
+                                <?= lang('first_name') ?>
+                                <span class="text-danger">*</span>
+                            </label>
                             <input id="first-name" class="form-control required">
                         </div>
 
                         <div class="form-group">
-                            <label for="last-name"><?= lang('last_name') ?> *</label>
+                            <label for="last-name">
+                                <?= lang('last_name') ?>
+                                <span class="text-danger">*</span>
+                            </label>
                             <input id="last-name" class="form-control required">
                         </div>
 
                         <div class="form-group">
-                            <label for="email"><?= lang('email') ?> *</label>
+                            <label for="email">
+                                <?= lang('email') ?>
+                                <span class="text-danger">*</span>
+                            </label>
                             <input id="email" class="form-control required">
                         </div>
 
                         <div class="form-group">
-                            <label for="phone-number"><?= lang('phone_number') ?> *</label>
+                            <label for="phone-number">
+                                <?= lang('phone_number') ?>
+                                <span class="text-danger">*</span>
+                            </label>
                             <input id="phone-number" class="form-control required">
                         </div>
 
                         <div class="form-group">
-                            <label for="mobile-number"><?= lang('mobile_number') ?></label>
+                            <label for="mobile-number">
+                                <?= lang('mobile_number') ?>
+                            </label>
                             <input id="mobile-number" class="form-control">
                         </div>
 
                         <div class="form-group">
-                            <label for="address"><?= lang('address') ?></label>
+                            <label for="address">
+                                <?= lang('address') ?>
+                            </label>
                             <input id="address" class="form-control">
                         </div>
 
                         <div class="form-group">
-                            <label for="city"><?= lang('city') ?></label>
+                            <label for="city">
+                                <?= lang('city') ?>
+                            </label>
                             <input id="city" class="form-control">
                         </div>
 
                         <div class="form-group">
-                            <label for="state"><?= lang('state') ?></label>
+                            <label for="state">
+                                <?= lang('state') ?>
+                            </label>
                             <input id="state" class="form-control">
                         </div>
 
                         <div class="form-group">
-                            <label for="zip-code"><?= lang('zip_code') ?></label>
+                            <label for="zip-code">
+                                <?= lang('zip_code') ?>
+                            </label>
                             <input id="zip-code" class="form-control">
                         </div>
 
                         <div class="form-group">
-                            <label for="notes"><?= lang('notes') ?></label>
+                            <label for="notes">
+                                <?= lang('notes') ?>
+                            </label>
                             <textarea id="notes" class="form-control" rows="3"></textarea>
                         </div>
                     </fieldset>
 
                     <fieldset class="col-12 col-sm-6 miscellaneous-wrapper">
-                        <legend class="border-bottom mb-4"><?= lang('system_login') ?></legend>
+                        <legend class="border-bottom mb-4">
+                            <?= lang('system_login') ?>
+                        </legend>
 
                         <div class="form-group">
-                            <label for="username"><?= lang('username') ?> *</label>
+                            <label for="username">
+                                <?= lang('username') ?>
+                                <span class="text-danger">*</span>
+                            </label>
                             <input id="username" class="form-control required">
                         </div>
 
                         <div class="form-group">
-                            <label for="password"><?= lang('password') ?></label>
+                            <label for="password">
+                                <?= lang('password') ?>
+                            </label>
                             <input type="password" id="password" class="form-control" autocomplete="new-password">
                         </div>
 
                         <div class="form-group">
-                            <label for="retype-password"><?= lang('retype_password') ?></label>
+                            <label for="retype-password">
+                                <?= lang('retype_password') ?>
+                            </label>
                             <input type="password" id="retype-password" class="form-control"
                                    autocomplete="new-password">
                         </div>
 
                         <div class="form-group">
-                            <label for="calendar-view"><?= lang('calendar') ?> *</label>
+                            <label for="calendar-view"><?= lang('calendar') ?>
+                                <span class="text-danger">*</span>
+                            </label>
                             <select id="calendar-view" class="form-control required">
                                 <option value="default">Default</option>
                                 <option value="table">Table</option>
@@ -480,7 +524,9 @@
                         </div>
 
                         <div class="form-group">
-                            <label for="timezone"><?= lang('timezone') ?></label>
+                            <label for="timezone">
+                                <?= lang('timezone') ?>
+                            </label>
                             <?= render_timezone_dropdown('id="timezone" class="form-control"') ?>
                         </div>
 

From cf67585f195e83f4fc1703f5d4303f7cd667fbbc Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:32:08 +0200
Subject: [PATCH 47/72] Added security policy file to the repo (#1122)

---
 .github/SECURITY.md | 4 ++++
 1 file changed, 4 insertions(+)
 create mode 100644 .github/SECURITY.md

diff --git a/.github/SECURITY.md b/.github/SECURITY.md
new file mode 100644
index 00000000..1870e6f1
--- /dev/null
+++ b/.github/SECURITY.md
@@ -0,0 +1,4 @@
+# Security Vulnerabilities
+
+If you discover a security vulnerability within Easy!Appointments, please send an email to info@easyappointments.org. 
+All security vulnerabilities will be promptly addressed.

From 8d4d063afa500a95f369b28cd1e634c7f04ef6ce Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 18 Oct 2021 12:19:13 +0200
Subject: [PATCH 48/72] Prepend the "any-provider" option to the booking page
 so that it is the first option displayed.

---
 assets/js/frontend_book.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/assets/js/frontend_book.js b/assets/js/frontend_book.js
index 79cbd991..410e46de 100644
--- a/assets/js/frontend_book.js
+++ b/assets/js/frontend_book.js
@@ -233,7 +233,7 @@ window.FrontendBook = window.FrontendBook || {};
 
             // Add the "Any Provider" entry.
             if ($('#select-provider option').length >= 1 && GlobalVariables.displayAnyProvider === '1') {
-                $('#select-provider').append(new Option('- ' + EALang.any_provider + ' -', 'any-provider', true, true));
+                $('#select-provider').prepend(new Option('- ' + EALang.any_provider + ' -', 'any-provider', true, true));
             }
 
             FrontendBookApi.getUnavailableDates($('#select-provider').val(), $(this).val(),

From 86bc718782b25dddfafab73941ecaab46db7b496 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 18 Oct 2021 12:43:40 +0200
Subject: [PATCH 49/72] Condier unavailable time periods that span into
 multiple days (#880).

---
 application/libraries/Availability.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/application/libraries/Availability.php b/application/libraries/Availability.php
index 204a03e2..5ec71507 100644
--- a/application/libraries/Availability.php
+++ b/application/libraries/Availability.php
@@ -341,7 +341,8 @@ class Availability {
     {
         $unavailability_events = $this->CI->appointments_model->get_batch([
             'is_unavailable' => TRUE,
-            'DATE(start_datetime)' => $date,
+            'DATE(start_datetime) <=' => $date,
+            'DATE(end_datetime) >=' => $date,
             'id_users_provider' => $provider['id']
         ]);
 

From 6b179c3b58bd236abcf4c2333da24151465e89c6 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 18 Oct 2021 13:04:32 +0200
Subject: [PATCH 50/72] When selecting the any provider option in the booking
 page then merge all the available hours of all providers that can serve the
 selected service (#1147).

---
 application/controllers/Appointments.php | 35 +++++++++++++++---------
 1 file changed, 22 insertions(+), 13 deletions(-)

diff --git a/application/controllers/Appointments.php b/application/controllers/Appointments.php
index 8406fea7..296d3e80 100755
--- a/application/controllers/Appointments.php
+++ b/application/controllers/Appointments.php
@@ -338,25 +338,34 @@ class Appointments extends EA_Controller {
 
             // If the user has selected the "any-provider" option then we will need to search for an available provider
             // that will provide the requested service.
+            $service = $this->services_model->get_row($service_id);
+            
             if ($provider_id === ANY_PROVIDER)
             {
-                $provider_id = $this->search_any_provider($service_id, $selected_date);
-
-                if ($provider_id === NULL)
+                $providers = $this->providers_model->get_batch(); 
+                
+                $available_hours = []; 
+                
+                foreach($providers as $provider)
                 {
-                    $this->output
-                        ->set_content_type('application/json')
-                        ->set_output(json_encode([]));
-
-                    return;
+                    if (!in_array($service_id, $provider['services']))
+                    {
+                        continue; 
+                    }
+                    
+                    $provider_available_hours = $this->availability->get_available_hours($selected_date, $service, $provider, $exclude_appointment_id); 
+                    
+                    $available_hours = array_merge($available_hours, $provider_available_hours);
                 }
+
+                $response = array_unique(array_values($available_hours)); 
             }
+            else
+            {
+                $provider = $this->providers_model->get_row($provider_id);
 
-            $service = $this->services_model->get_row($service_id);
-
-            $provider = $this->providers_model->get_row($provider_id);
-
-            $response = $this->availability->get_available_hours($selected_date, $service, $provider, $exclude_appointment_id);
+                $response = $this->availability->get_available_hours($selected_date, $service, $provider, $exclude_appointment_id);
+            }
         }
         catch (Exception $exception)
         {

From 1d632d561db7cffaa01f2e7cd531173b51f054ab Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 18 Oct 2021 13:40:05 +0200
Subject: [PATCH 51/72] Made the tests executable again (#1042).

---
 composer.json                                 |  7 +++--
 composer.lock                                 |  4 +--
 phpunit.xml                                   | 31 +++----------------
 tests/{phpunit => }/bootstrap.php             |  4 +--
 .../engine/Api/V1/AuthorizationTest.php       |  2 +-
 .../engine/Api/V1/FilterTest.php              |  0
 .../engine/Api/V1/MinimizeTest.php            |  0
 .../engine/Api/V1/PaginationTest.php          |  0
 .../engine/Api/V1/ResponseTest.php            |  0
 .../engine/Api/V1/SearchTest.php              |  0
 .../{phpunit => }/engine/Api/V1/SortTest.php  |  0
 .../engine/Api/V1/fixtures/admin.json         |  0
 .../engine/Api/V1/fixtures/appointment.json   |  0
 .../engine/Api/V1/fixtures/category.json      |  0
 .../engine/Api/V1/fixtures/customer.json      |  0
 .../engine/Api/V1/fixtures/provider.json      |  0
 .../engine/Api/V1/fixtures/secretary.json     |  0
 .../engine/Api/V1/fixtures/service.json       |  0
 .../engine/Api/V1/fixtures/setting.json       |  0
 .../Api/V1/fixtures/unavailability.json       |  0
 .../Type => engine/Types}/BooleanTest.php     |  2 +-
 .../Type => engine/Types}/DecimalTest.php     |  2 +-
 .../Type => engine/Types}/EmailTest.php       |  2 +-
 .../Type => engine/Types}/IntegerTest.php     |  2 +-
 .../Types}/NonEmptyTextTest.php               |  2 +-
 .../engine/Type => engine/Types}/TextTest.php |  2 +-
 .../Types}/UnsignedIntegerTest.php            |  2 +-
 .../engine/Type => engine/Types}/UrlTest.php  |  2 +-
 28 files changed, 22 insertions(+), 42 deletions(-)
 rename tests/{phpunit => }/bootstrap.php (84%)
 rename tests/{phpunit => }/engine/Api/V1/AuthorizationTest.php (96%)
 rename tests/{phpunit => }/engine/Api/V1/FilterTest.php (100%)
 rename tests/{phpunit => }/engine/Api/V1/MinimizeTest.php (100%)
 rename tests/{phpunit => }/engine/Api/V1/PaginationTest.php (100%)
 rename tests/{phpunit => }/engine/Api/V1/ResponseTest.php (100%)
 rename tests/{phpunit => }/engine/Api/V1/SearchTest.php (100%)
 rename tests/{phpunit => }/engine/Api/V1/SortTest.php (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/admin.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/appointment.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/category.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/customer.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/provider.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/secretary.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/service.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/setting.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/unavailability.json (100%)
 rename tests/{phpunit/engine/Type => engine/Types}/BooleanTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/DecimalTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/EmailTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/IntegerTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/NonEmptyTextTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/TextTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/UnsignedIntegerTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/UrlTest.php (97%)

diff --git a/composer.json b/composer.json
index 9faad569..7a226909 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,10 @@
     "minimum-stability": "stable",
     "autoload": {
         "psr-4": {
-            "EA\\Engine\\": "engine/"
+            "EA\\Engine\\": [
+                "engine/", 
+                "tests/engine/"
+            ]
         }
     },
     "require": {
@@ -45,7 +48,7 @@
     },
     "require-dev": {
         "roave/security-advisories": "dev-master",
-        "phpunit/phpunit": "^9"
+        "phpunit/phpunit": "^9.5"
     },
     "scripts": {
         "test": "php vendor/bin/phpunit tests"
diff --git a/composer.lock b/composer.lock
index 16b03a30..afb62e73 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "38fd62b1f2842600782427033aa9e826",
+    "content-hash": "691584c0c433458674bdb8e6b295f10c",
     "packages": [
         {
             "name": "firebase/php-jwt",
@@ -3759,5 +3759,5 @@
         "ext-gd": "*"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.0.0"
+    "plugin-api-version": "2.1.0"
 }
diff --git a/phpunit.xml b/phpunit.xml
index 84b8d7cf..5fe174f1 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,31 +1,8 @@
 <phpunit
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/|version|/phpunit.xsd"
-    backupGlobals="true"
-    backupStaticAttributes="false"
-    bootstrap="tests/phpunit/bootstrap.php"
+    xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/phpunit.xsd"
+    bootstrap="tests/bootstrap.php"
+    colors="true"
     cacheResult="false"
-    cacheTokens="false"
-    colors="false"
-    convertErrorsToExceptions="true"
-    convertNoticesToExceptions="true"
-    convertWarningsToExceptions="true"
-    forceCoversAnnotation="false"
-    printerClass="PHPUnit\TextUI\ResultPrinter"
-    processIsolation="false"
-    stopOnError="false"
-    stopOnFailure="false"
-    stopOnIncomplete="false"
-    stopOnSkipped="false"
-    stopOnRisky="false"
-    testSuiteLoaderClass="PHPUnit\Runner\StandardTestSuiteLoader"
-    timeoutForSmallTests="1"
-    timeoutForMediumTests="10"
-    timeoutForLargeTests="60"
-    verbose="false">
-    <filter>
-        <whitelist>
-            <directory suffix=".php">src/engine</directory>
-        </whitelist>
-    </filter>
+>
 </phpunit>
diff --git a/tests/phpunit/bootstrap.php b/tests/bootstrap.php
similarity index 84%
rename from tests/phpunit/bootstrap.php
rename to tests/bootstrap.php
index 40e00a06..d3492010 100644
--- a/tests/phpunit/bootstrap.php
+++ b/tests/bootstrap.php
@@ -13,5 +13,5 @@
 
 // Bootstrap Easy!Appointments PHPUnit Tests
 
-require_once __DIR__ . '/../../config.php';
-require_once __DIR__ . '/../../vendor/autoload.php';
+require_once __DIR__ . '/../config.php';
+require_once __DIR__ . '/../vendor/autoload.php';
diff --git a/tests/phpunit/engine/Api/V1/AuthorizationTest.php b/tests/engine/Api/V1/AuthorizationTest.php
similarity index 96%
rename from tests/phpunit/engine/Api/V1/AuthorizationTest.php
rename to tests/engine/Api/V1/AuthorizationTest.php
index 84349211..45e2f630 100644
--- a/tests/phpunit/engine/Api/V1/AuthorizationTest.php
+++ b/tests/engine/Api/V1/AuthorizationTest.php
@@ -13,7 +13,7 @@
 
 namespace EA\Engine\Api\V1;
 
-use EA\Engine\Type\NonEmptyText;
+use EA\Engine\Types\NonEmptyText;
 use PHPUnit\Framework\TestCase;
 
 class AuthorizationTest extends TestCase {
diff --git a/tests/phpunit/engine/Api/V1/FilterTest.php b/tests/engine/Api/V1/FilterTest.php
similarity index 100%
rename from tests/phpunit/engine/Api/V1/FilterTest.php
rename to tests/engine/Api/V1/FilterTest.php
diff --git a/tests/phpunit/engine/Api/V1/MinimizeTest.php b/tests/engine/Api/V1/MinimizeTest.php
similarity index 100%
rename from tests/phpunit/engine/Api/V1/MinimizeTest.php
rename to tests/engine/Api/V1/MinimizeTest.php
diff --git a/tests/phpunit/engine/Api/V1/PaginationTest.php b/tests/engine/Api/V1/PaginationTest.php
similarity index 100%
rename from tests/phpunit/engine/Api/V1/PaginationTest.php
rename to tests/engine/Api/V1/PaginationTest.php
diff --git a/tests/phpunit/engine/Api/V1/ResponseTest.php b/tests/engine/Api/V1/ResponseTest.php
similarity index 100%
rename from tests/phpunit/engine/Api/V1/ResponseTest.php
rename to tests/engine/Api/V1/ResponseTest.php
diff --git a/tests/phpunit/engine/Api/V1/SearchTest.php b/tests/engine/Api/V1/SearchTest.php
similarity index 100%
rename from tests/phpunit/engine/Api/V1/SearchTest.php
rename to tests/engine/Api/V1/SearchTest.php
diff --git a/tests/phpunit/engine/Api/V1/SortTest.php b/tests/engine/Api/V1/SortTest.php
similarity index 100%
rename from tests/phpunit/engine/Api/V1/SortTest.php
rename to tests/engine/Api/V1/SortTest.php
diff --git a/tests/phpunit/engine/Api/V1/fixtures/admin.json b/tests/engine/Api/V1/fixtures/admin.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/admin.json
rename to tests/engine/Api/V1/fixtures/admin.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/appointment.json b/tests/engine/Api/V1/fixtures/appointment.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/appointment.json
rename to tests/engine/Api/V1/fixtures/appointment.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/category.json b/tests/engine/Api/V1/fixtures/category.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/category.json
rename to tests/engine/Api/V1/fixtures/category.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/customer.json b/tests/engine/Api/V1/fixtures/customer.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/customer.json
rename to tests/engine/Api/V1/fixtures/customer.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/provider.json b/tests/engine/Api/V1/fixtures/provider.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/provider.json
rename to tests/engine/Api/V1/fixtures/provider.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/secretary.json b/tests/engine/Api/V1/fixtures/secretary.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/secretary.json
rename to tests/engine/Api/V1/fixtures/secretary.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/service.json b/tests/engine/Api/V1/fixtures/service.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/service.json
rename to tests/engine/Api/V1/fixtures/service.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/setting.json b/tests/engine/Api/V1/fixtures/setting.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/setting.json
rename to tests/engine/Api/V1/fixtures/setting.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/unavailability.json b/tests/engine/Api/V1/fixtures/unavailability.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/unavailability.json
rename to tests/engine/Api/V1/fixtures/unavailability.json
diff --git a/tests/phpunit/engine/Type/BooleanTest.php b/tests/engine/Types/BooleanTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/BooleanTest.php
rename to tests/engine/Types/BooleanTest.php
index 098fded6..ddad070e 100644
--- a/tests/phpunit/engine/Type/BooleanTest.php
+++ b/tests/engine/Types/BooleanTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/DecimalTest.php b/tests/engine/Types/DecimalTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/DecimalTest.php
rename to tests/engine/Types/DecimalTest.php
index ab8686e3..aedc4925 100644
--- a/tests/phpunit/engine/Type/DecimalTest.php
+++ b/tests/engine/Types/DecimalTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/EmailTest.php b/tests/engine/Types/EmailTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/EmailTest.php
rename to tests/engine/Types/EmailTest.php
index 327d6eeb..5672f078 100644
--- a/tests/phpunit/engine/Type/EmailTest.php
+++ b/tests/engine/Types/EmailTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/IntegerTest.php b/tests/engine/Types/IntegerTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/IntegerTest.php
rename to tests/engine/Types/IntegerTest.php
index 09bba741..0caadcfb 100644
--- a/tests/phpunit/engine/Type/IntegerTest.php
+++ b/tests/engine/Types/IntegerTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/NonEmptyTextTest.php b/tests/engine/Types/NonEmptyTextTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/NonEmptyTextTest.php
rename to tests/engine/Types/NonEmptyTextTest.php
index 359c0527..bdd85fab 100644
--- a/tests/phpunit/engine/Type/NonEmptyTextTest.php
+++ b/tests/engine/Types/NonEmptyTextTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/TextTest.php b/tests/engine/Types/TextTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/TextTest.php
rename to tests/engine/Types/TextTest.php
index 3fe9e5aa..e7f9b408 100644
--- a/tests/phpunit/engine/Type/TextTest.php
+++ b/tests/engine/Types/TextTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/UnsignedIntegerTest.php b/tests/engine/Types/UnsignedIntegerTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/UnsignedIntegerTest.php
rename to tests/engine/Types/UnsignedIntegerTest.php
index 7f369846..c022c120 100644
--- a/tests/phpunit/engine/Type/UnsignedIntegerTest.php
+++ b/tests/engine/Types/UnsignedIntegerTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/UrlTest.php b/tests/engine/Types/UrlTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/UrlTest.php
rename to tests/engine/Types/UrlTest.php
index 19851c4d..cb9392de 100644
--- a/tests/phpunit/engine/Type/UrlTest.php
+++ b/tests/engine/Types/UrlTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 

From f1ba0c26888aa07be94c624f36e2a50b4bfd5c9b Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Tue, 24 Aug 2021 16:00:59 +0300
Subject: [PATCH 52/72] Applied the right software version to the doc files.

---
 docs/console.md              | 2 +-
 docs/docker.md               | 2 +-
 docs/faq.md                  | 2 +-
 docs/get-involved.md         | 2 +-
 docs/google-calendar-sync.md | 2 +-
 docs/installation-guide.md   | 2 +-
 docs/manage-translations.md  | 2 +-
 docs/readme.md               | 2 +-
 docs/rest-api.md             | 2 +-
 docs/update-guide.md         | 2 +-
 10 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/docs/console.md b/docs/console.md
index b5bcf51e..5d783a02 100644
--- a/docs/console.md
+++ b/docs/console.md
@@ -89,6 +89,6 @@ php index.php console help
 
 This command will give more information about the console capabilities.
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/docker.md b/docs/docker.md
index 57ce0813..deee5f4f 100644
--- a/docs/docker.md
+++ b/docs/docker.md
@@ -45,6 +45,6 @@ You can remove the docker containers with `docker rm easyappointments-server eas
 
 You can remove the server image with `docker rmi easyappointments-server:v1`.
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/faq.md b/docs/faq.md
index 32abfc0e..5f36559c 100644
--- a/docs/faq.md
+++ b/docs/faq.md
@@ -54,6 +54,6 @@ You get this warning because PHP is not configured with a timezone setting. This
  `date_default_timezone_set('America/Los_Angeles'); // Use your own timezone string.`
 
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/get-involved.md b/docs/get-involved.md
index b65fcd46..faa956ce 100644
--- a/docs/get-involved.md
+++ b/docs/get-involved.md
@@ -20,6 +20,6 @@ You are more than welcome to help with the translation progress of the user inte
 
 It would be much appreciated if you would take 5 minutes of your time to fill this small form on your experience with Easy!Appointments. User feedback is very important and will help with the future planning of the project. Fill the [E!A Feedback Form](https://docs.google.com/forms/d/15dw1jl7lUgw4q-XXMn13Gx_e8zJxAiyWYMOdqtZqIHU/viewform).
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/google-calendar-sync.md b/docs/google-calendar-sync.md
index a7595d62..5d88ffef 100644
--- a/docs/google-calendar-sync.md
+++ b/docs/google-calendar-sync.md
@@ -49,6 +49,6 @@ Google Developers – https://developers.google.com/google-apps/calendar
 
 E!A Support Group – https://groups.google.com/forum/#!forum/easy-appointments
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/installation-guide.md b/docs/installation-guide.md
index 83cafc2b..8f21eddf 100644
--- a/docs/installation-guide.md
+++ b/docs/installation-guide.md
@@ -29,6 +29,6 @@ Finally just add a link in your website that points to your Easy!Appointments in
 
 Happy Bookin'!
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/manage-translations.md b/docs/manage-translations.md
index f726a4f3..7256ea48 100644
--- a/docs/manage-translations.md
+++ b/docs/manage-translations.md
@@ -14,6 +14,6 @@ Easy!Appointments is based upon CodeIgniter (PHP Framework) and it uses its buil
 
 Follow these steps in order to add or adjust your translations and modify the message of the user interface of Easy!Appointments. If you want contribute to the translation process of Easy!Appointments please read the [Get Involved](https://github.com/alextselegidis/easyappointments/wiki/Get-Involved!) wiki page for more information. Please share your translations with the user community. 
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/readme.md b/docs/readme.md
index 7d172e58..89500aa3 100644
--- a/docs/readme.md
+++ b/docs/readme.md
@@ -11,4 +11,4 @@ Welcome to the documentation pages of Easy!Appointments. Navigate through the av
 - [Google Calendar Sync](google-calendar-sync.md)
 - [FAQ](faq.md)
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
diff --git a/docs/rest-api.md b/docs/rest-api.md
index 587501cf..476d2f9e 100644
--- a/docs/rest-api.md
+++ b/docs/rest-api.md
@@ -472,6 +472,6 @@ fastcgi_param PHP_AUTH_PW $http_authorization;
 
 [[Source]](http://serverfault.com/a/520943)
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)
diff --git a/docs/update-guide.md b/docs/update-guide.md
index db6caba9..0229c7d3 100644
--- a/docs/update-guide.md
+++ b/docs/update-guide.md
@@ -110,6 +110,6 @@ Open your browser to the Easy!Appointments installation URL, login to the backen
 
 Use the data of the old `configuration.php` file in the new `config.php`. 
 
-*This document applies to Easy!Appointments v1.4.1.*
+*This document applies to Easy!Appointments v1.4.2.*
 
 [Back](readme.md)

From 5dc38f987a48b6ce26ffc6135a27c859ba5e6b3b Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Tue, 24 Aug 2021 16:01:17 +0300
Subject: [PATCH 53/72] Corrected model comments

---
 application/models/Secretaries_model.php | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/application/models/Secretaries_model.php b/application/models/Secretaries_model.php
index 0a8bd153..6b81805a 100644
--- a/application/models/Secretaries_model.php
+++ b/application/models/Secretaries_model.php
@@ -162,7 +162,7 @@ class Secretaries_model extends EA_Model {
     /**
      * Validate Records Username
      *
-     * @param string $username The provider records username.
+     * @param string $username The secretary records username.
      * @param int $user_id The user record id.
      *
      * @return bool Returns the validation result.
@@ -348,13 +348,13 @@ class Secretaries_model extends EA_Model {
     }
 
     /**
-     * Set a provider's setting value in the database.
+     * Set a secretary's setting value in the database.
      *
-     * The provider and settings record must already exist.
+     * The secretary and settings record must already exist.
      *
      * @param string $setting_name The setting's name.
      * @param string $value The setting's value.
-     * @param int $secretary_id The selected provider id.
+     * @param int $secretary_id The selected secretary id.
      *
      * @return bool
      */
@@ -556,7 +556,7 @@ class Secretaries_model extends EA_Model {
     }
 
     /**
-     * Get a providers setting from the database.
+     * Get a secretaries setting from the database.
      *
      * @param string $setting_name The setting name that is going to be returned.
      * @param int $secretary_id The selected provider id.
@@ -565,8 +565,8 @@ class Secretaries_model extends EA_Model {
      */
     public function get_setting($setting_name, $secretary_id)
     {
-        $provider_settings = $this->db->get_where('user_settings',
+        $secretary_settings = $this->db->get_where('user_settings',
             ['id_users' => $secretary_id])->row_array();
-        return $provider_settings[$setting_name];
+        return $secretary_settings[$setting_name];
     }
 }

From dfa6775db0ac925ca28a635065c2390b39956221 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Tue, 24 Aug 2021 16:01:44 +0300
Subject: [PATCH 54/72] Use the right bootstrap CSS classes for the setting
 input field help blocks

---
 application/views/backend/settings.php | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/application/views/backend/settings.php b/application/views/backend/settings.php
index f3b758ad..6e2669e8 100755
--- a/application/views/backend/settings.php
+++ b/application/views/backend/settings.php
@@ -140,7 +140,7 @@
                                     <option value="friday"><?= lang('friday') ?></option>
                                     <option value="saturday"><?= lang('saturday') ?></option>
                                 </select>
-                                <span class="help-block">
+                                <span class="form-text text-muted">
                                     <?= lang('first_weekday_hint') ?>
                                 </span>
                             </div>
@@ -151,14 +151,14 @@
                                     Google Analytics ID</label>
                                 <input id="google-analytics-code" placeholder="UA-XXXXXXXX-XX or G-XXXXXXXXXX"
                                        data-field="google_analytics_code" class="form-control">
-                                <span class="help-block">
+                                <span class="form-text text-muted">
                                     <?= lang('google_analytics_code_hint') ?>
                                 </span>
                             </div>
                             <div class="form-group">
                                 <label for="api-token">API Token</label>
                                 <input id="api-token" data-field="api_token" class="form-control">
-                                <span class="help-block">
+                                <span class="form-text text-muted">
                                     <?= lang('api_token_hint') ?>
                                 </span>
                             </div>
@@ -192,7 +192,7 @@
                                         <?= lang('phone_number') ?>
                                     </label>
                                 </div>
-                                <span class="help-block">
+                                <span class="form-text text-muted">
                                     <?= lang('require_phone_number_hint') ?>
                                 </span>
                             </div>
@@ -203,7 +203,7 @@
                                         <?= lang('any_provider') ?>
                                     </label>
                                 </div>
-                                <span class="help-block">
+                                <span class="form-text text-muted">
                                     <?= lang('display_any_provider_hint') ?>
                                 </span>
                             </div>

From 1a926f0ad9098f0a57fd711ffcf0b5e85fc3a458 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Tue, 24 Aug 2021 16:03:45 +0300
Subject: [PATCH 55/72] The backend calendar must display the modified
 appointment date, when using the appointment link of the confirmation email
 (#1112).

---
 assets/js/backend_calendar_default_view.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/assets/js/backend_calendar_default_view.js b/assets/js/backend_calendar_default_view.js
index 9f9275be..c598a726 100755
--- a/assets/js/backend_calendar_default_view.js
+++ b/assets/js/backend_calendar_default_view.js
@@ -1621,6 +1621,8 @@ window.BackendCalendarDefaultView = window.BackendCalendarDefaultView || {};
             $dialog.find('#customer-notes').val(customer.notes);
 
             $dialog.modal('show');
+
+            $('#calendar').fullCalendar('gotoDate', moment(appointment.start_datetime));
         }
 
         if (!$('#select-filter-item option').length) {

From 831ecff8c39624f8ee64492ab7370eb3c24e558f Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Tue, 24 Aug 2021 16:34:13 +0300
Subject: [PATCH 56/72] Re-introduced the system folder to the root directory
 and removed it from the composer.json file (#1109).

---
 composer.json                                 |    7 -
 composer.lock                                 |   41 +-
 index.php                                     |    2 +-
 system/.htaccess                              |    6 +
 system/core/Benchmark.php                     |  133 +
 system/core/CodeIgniter.php                   |  508 +++
 system/core/Common.php                        |  853 +++++
 system/core/Config.php                        |  365 +++
 system/core/Controller.php                    |  103 +
 system/core/Exceptions.php                    |  286 ++
 system/core/Hooks.php                         |  266 ++
 system/core/Input.php                         |  662 ++++
 system/core/Lang.php                          |  203 ++
 system/core/Loader.php                        | 1405 ++++++++
 system/core/Log.php                           |  295 ++
 system/core/Model.php                         |   68 +
 system/core/Output.php                        |  839 +++++
 system/core/Router.php                        |  472 +++
 system/core/Security.php                      | 1068 ++++++
 system/core/URI.php                           |  661 ++++
 system/core/Utf8.php                          |  164 +
 system/core/compat/hash.php                   |  252 ++
 system/core/compat/index.html                 |   11 +
 system/core/compat/mbstring.php               |  149 +
 system/core/compat/password.php               |  251 ++
 system/core/compat/standard.php               |  134 +
 system/core/index.html                        |   11 +
 system/database/DB.php                        |  221 ++
 system/database/DB_cache.php                  |  221 ++
 system/database/DB_driver.php                 | 1938 +++++++++++
 system/database/DB_forge.php                  | 1045 ++++++
 system/database/DB_query_builder.php          | 2880 +++++++++++++++++
 system/database/DB_result.php                 |  665 ++++
 system/database/DB_utility.php                |  414 +++
 .../database/drivers/cubrid/cubrid_driver.php |  405 +++
 .../database/drivers/cubrid/cubrid_forge.php  |  230 ++
 .../database/drivers/cubrid/cubrid_result.php |  177 +
 .../drivers/cubrid/cubrid_utility.php         |   79 +
 system/database/drivers/cubrid/index.html     |   11 +
 .../database/drivers/ibase/ibase_driver.php   |  413 +++
 system/database/drivers/ibase/ibase_forge.php |  251 ++
 .../database/drivers/ibase/ibase_result.php   |  161 +
 .../database/drivers/ibase/ibase_utility.php  |   69 +
 system/database/drivers/ibase/index.html      |   11 +
 system/database/drivers/index.html            |   11 +
 system/database/drivers/mssql/index.html      |   11 +
 .../database/drivers/mssql/mssql_driver.php   |  506 +++
 system/database/drivers/mssql/mssql_forge.php |  151 +
 .../database/drivers/mssql/mssql_result.php   |  198 ++
 .../database/drivers/mssql/mssql_utility.php  |   77 +
 system/database/drivers/mysql/index.html      |   11 +
 .../database/drivers/mysql/mysql_driver.php   |  493 +++
 system/database/drivers/mysql/mysql_forge.php |  243 ++
 .../database/drivers/mysql/mysql_result.php   |  199 ++
 .../database/drivers/mysql/mysql_utility.php  |  211 ++
 system/database/drivers/mysqli/index.html     |   11 +
 .../database/drivers/mysqli/mysqli_driver.php |  540 ++++
 .../database/drivers/mysqli/mysqli_forge.php  |  244 ++
 .../database/drivers/mysqli/mysqli_result.php |  232 ++
 .../drivers/mysqli/mysqli_utility.php         |  211 ++
 system/database/drivers/oci8/index.html       |   11 +
 system/database/drivers/oci8/oci8_driver.php  |  701 ++++
 system/database/drivers/oci8/oci8_forge.php   |  216 ++
 system/database/drivers/oci8/oci8_result.php  |  229 ++
 system/database/drivers/oci8/oci8_utility.php |   68 +
 system/database/drivers/odbc/index.html       |   11 +
 system/database/drivers/odbc/odbc_driver.php  |  425 +++
 system/database/drivers/odbc/odbc_forge.php   |   86 +
 system/database/drivers/odbc/odbc_result.php  |  268 ++
 system/database/drivers/odbc/odbc_utility.php |   63 +
 system/database/drivers/pdo/index.html        |   11 +
 system/database/drivers/pdo/pdo_driver.php    |  342 ++
 system/database/drivers/pdo/pdo_forge.php     |   65 +
 system/database/drivers/pdo/pdo_result.php    |  198 ++
 system/database/drivers/pdo/pdo_utility.php   |   63 +
 .../drivers/pdo/subdrivers/index.html         |   11 +
 .../drivers/pdo/subdrivers/pdo_4d_driver.php  |  200 ++
 .../drivers/pdo/subdrivers/pdo_4d_forge.php   |  217 ++
 .../pdo/subdrivers/pdo_cubrid_driver.php      |  209 ++
 .../pdo/subdrivers/pdo_cubrid_forge.php       |  230 ++
 .../pdo/subdrivers/pdo_dblib_driver.php       |  353 ++
 .../pdo/subdrivers/pdo_dblib_forge.php        |  149 +
 .../pdo/subdrivers/pdo_firebird_driver.php    |  279 ++
 .../pdo/subdrivers/pdo_firebird_forge.php     |  237 ++
 .../drivers/pdo/subdrivers/pdo_ibm_driver.php |  244 ++
 .../drivers/pdo/subdrivers/pdo_ibm_forge.php  |  154 +
 .../pdo/subdrivers/pdo_informix_driver.php    |  309 ++
 .../pdo/subdrivers/pdo_informix_forge.php     |  163 +
 .../pdo/subdrivers/pdo_mysql_driver.php       |  379 +++
 .../pdo/subdrivers/pdo_mysql_forge.php        |  256 ++
 .../drivers/pdo/subdrivers/pdo_oci_driver.php |  326 ++
 .../drivers/pdo/subdrivers/pdo_oci_forge.php  |  207 ++
 .../pdo/subdrivers/pdo_odbc_driver.php        |  229 ++
 .../drivers/pdo/subdrivers/pdo_odbc_forge.php |   70 +
 .../pdo/subdrivers/pdo_pgsql_driver.php       |  384 +++
 .../pdo/subdrivers/pdo_pgsql_forge.php        |  210 ++
 .../pdo/subdrivers/pdo_sqlite_driver.php      |  213 ++
 .../pdo/subdrivers/pdo_sqlite_forge.php       |  238 ++
 .../pdo/subdrivers/pdo_sqlsrv_driver.php      |  369 +++
 .../pdo/subdrivers/pdo_sqlsrv_forge.php       |  149 +
 system/database/drivers/postgre/index.html    |   11 +
 .../drivers/postgre/postgre_driver.php        |  604 ++++
 .../drivers/postgre/postgre_forge.php         |  205 ++
 .../drivers/postgre/postgre_result.php        |  182 ++
 .../drivers/postgre/postgre_utility.php       |   78 +
 system/database/drivers/sqlite3/index.html    |   11 +
 .../drivers/sqlite3/sqlite3_driver.php        |  344 ++
 .../drivers/sqlite3/sqlite3_forge.php         |  225 ++
 .../drivers/sqlite3/sqlite3_result.php        |  194 ++
 .../drivers/sqlite3/sqlite3_utility.php       |   61 +
 system/database/drivers/sqlsrv/index.html     |   11 +
 .../database/drivers/sqlsrv/sqlsrv_driver.php |  543 ++++
 .../database/drivers/sqlsrv/sqlsrv_forge.php  |  149 +
 .../database/drivers/sqlsrv/sqlsrv_result.php |  193 ++
 .../drivers/sqlsrv/sqlsrv_utility.php         |   77 +
 system/database/index.html                    |   11 +
 system/fonts/index.html                       |   11 +
 system/fonts/texb.ttf                         |  Bin 0 -> 143830 bytes
 system/helpers/array_helper.php               |  115 +
 system/helpers/captcha_helper.php             |  384 +++
 system/helpers/cookie_helper.php              |  112 +
 system/helpers/date_helper.php                |  702 ++++
 system/helpers/directory_helper.php           |  101 +
 system/helpers/download_helper.php            |  180 ++
 system/helpers/file_helper.php                |  433 +++
 system/helpers/form_helper.php                | 1035 ++++++
 system/helpers/html_helper.php                |  391 +++
 system/helpers/index.html                     |   11 +
 system/helpers/inflector_helper.php           |  326 ++
 system/helpers/language_helper.php            |   75 +
 system/helpers/number_helper.php              |   94 +
 system/helpers/path_helper.php                |   82 +
 system/helpers/security_helper.php            |  113 +
 system/helpers/string_helper.php              |  257 ++
 system/helpers/text_helper.php                |  567 ++++
 system/helpers/typography_helper.php          |  104 +
 system/helpers/url_helper.php                 |  569 ++++
 system/helpers/xml_helper.php                 |   90 +
 system/index.html                             |   11 +
 system/language/english/calendar_lang.php     |   84 +
 system/language/english/date_lang.php         |   94 +
 system/language/english/db_lang.php           |   63 +
 system/language/english/email_lang.php        |   58 +
 .../language/english/form_validation_lang.php |   70 +
 system/language/english/ftp_lang.php          |   51 +
 system/language/english/imglib_lang.php       |   58 +
 system/language/english/index.html            |   11 +
 system/language/english/migration_lang.php    |   47 +
 system/language/english/number_lang.php       |   44 +
 system/language/english/pagination_lang.php   |   43 +
 system/language/english/profiler_lang.php     |   60 +
 system/language/english/unit_test_lang.php    |   58 +
 system/language/english/upload_lang.php       |   55 +
 system/language/index.html                    |   11 +
 system/libraries/Cache/Cache.php              |  268 ++
 system/libraries/Cache/drivers/Cache_apc.php  |  217 ++
 system/libraries/Cache/drivers/Cache_apcu.php |  219 ++
 .../libraries/Cache/drivers/Cache_dummy.php   |  172 +
 system/libraries/Cache/drivers/Cache_file.php |  286 ++
 .../Cache/drivers/Cache_memcached.php         |  325 ++
 .../libraries/Cache/drivers/Cache_redis.php   |  364 +++
 .../Cache/drivers/Cache_wincache.php          |  217 ++
 system/libraries/Cache/drivers/index.html     |   11 +
 system/libraries/Cache/index.html             |   11 +
 system/libraries/Calendar.php                 |  546 ++++
 system/libraries/Driver.php                   |  342 ++
 system/libraries/Email.php                    | 2417 ++++++++++++++
 system/libraries/Encrypt.php                  |  521 +++
 system/libraries/Encryption.php               |  938 ++++++
 system/libraries/Form_validation.php          | 1592 +++++++++
 system/libraries/Ftp.php                      |  667 ++++
 system/libraries/Image_lib.php                | 1878 +++++++++++
 system/libraries/Migration.php                |  477 +++
 system/libraries/Pagination.php               |  704 ++++
 system/libraries/Parser.php                   |  248 ++
 system/libraries/Profiler.php                 |  574 ++++
 system/libraries/Session/Session.php          |  962 ++++++
 system/libraries/Session/Session_driver.php   |  187 ++
 .../drivers/Session_database_driver.php       |  445 +++
 .../Session/drivers/Session_files_driver.php  |  432 +++
 .../drivers/Session_memcached_driver.php      |  397 +++
 .../Session/drivers/Session_redis_driver.php  |  485 +++
 system/libraries/Session/drivers/index.html   |   11 +
 system/libraries/Session/index.html           |   11 +
 system/libraries/Table.php                    |  539 +++
 system/libraries/Trackback.php                |  556 ++++
 system/libraries/Typography.php               |  424 +++
 system/libraries/Unit_test.php                |  406 +++
 system/libraries/Upload.php                   | 1324 ++++++++
 system/libraries/User_agent.php               |  681 ++++
 system/libraries/Xmlrpc.php                   | 1918 +++++++++++
 system/libraries/Xmlrpcs.php                  |  619 ++++
 system/libraries/Zip.php                      |  530 +++
 system/libraries/index.html                   |   11 +
 194 files changed, 62650 insertions(+), 48 deletions(-)
 create mode 100644 system/.htaccess
 create mode 100644 system/core/Benchmark.php
 create mode 100644 system/core/CodeIgniter.php
 create mode 100644 system/core/Common.php
 create mode 100644 system/core/Config.php
 create mode 100644 system/core/Controller.php
 create mode 100644 system/core/Exceptions.php
 create mode 100644 system/core/Hooks.php
 create mode 100644 system/core/Input.php
 create mode 100644 system/core/Lang.php
 create mode 100644 system/core/Loader.php
 create mode 100644 system/core/Log.php
 create mode 100644 system/core/Model.php
 create mode 100644 system/core/Output.php
 create mode 100644 system/core/Router.php
 create mode 100644 system/core/Security.php
 create mode 100644 system/core/URI.php
 create mode 100644 system/core/Utf8.php
 create mode 100644 system/core/compat/hash.php
 create mode 100644 system/core/compat/index.html
 create mode 100644 system/core/compat/mbstring.php
 create mode 100644 system/core/compat/password.php
 create mode 100644 system/core/compat/standard.php
 create mode 100644 system/core/index.html
 create mode 100644 system/database/DB.php
 create mode 100644 system/database/DB_cache.php
 create mode 100644 system/database/DB_driver.php
 create mode 100644 system/database/DB_forge.php
 create mode 100644 system/database/DB_query_builder.php
 create mode 100644 system/database/DB_result.php
 create mode 100644 system/database/DB_utility.php
 create mode 100644 system/database/drivers/cubrid/cubrid_driver.php
 create mode 100644 system/database/drivers/cubrid/cubrid_forge.php
 create mode 100644 system/database/drivers/cubrid/cubrid_result.php
 create mode 100644 system/database/drivers/cubrid/cubrid_utility.php
 create mode 100644 system/database/drivers/cubrid/index.html
 create mode 100644 system/database/drivers/ibase/ibase_driver.php
 create mode 100644 system/database/drivers/ibase/ibase_forge.php
 create mode 100644 system/database/drivers/ibase/ibase_result.php
 create mode 100644 system/database/drivers/ibase/ibase_utility.php
 create mode 100644 system/database/drivers/ibase/index.html
 create mode 100644 system/database/drivers/index.html
 create mode 100644 system/database/drivers/mssql/index.html
 create mode 100644 system/database/drivers/mssql/mssql_driver.php
 create mode 100644 system/database/drivers/mssql/mssql_forge.php
 create mode 100644 system/database/drivers/mssql/mssql_result.php
 create mode 100644 system/database/drivers/mssql/mssql_utility.php
 create mode 100644 system/database/drivers/mysql/index.html
 create mode 100644 system/database/drivers/mysql/mysql_driver.php
 create mode 100644 system/database/drivers/mysql/mysql_forge.php
 create mode 100644 system/database/drivers/mysql/mysql_result.php
 create mode 100644 system/database/drivers/mysql/mysql_utility.php
 create mode 100644 system/database/drivers/mysqli/index.html
 create mode 100644 system/database/drivers/mysqli/mysqli_driver.php
 create mode 100644 system/database/drivers/mysqli/mysqli_forge.php
 create mode 100644 system/database/drivers/mysqli/mysqli_result.php
 create mode 100644 system/database/drivers/mysqli/mysqli_utility.php
 create mode 100644 system/database/drivers/oci8/index.html
 create mode 100644 system/database/drivers/oci8/oci8_driver.php
 create mode 100644 system/database/drivers/oci8/oci8_forge.php
 create mode 100644 system/database/drivers/oci8/oci8_result.php
 create mode 100644 system/database/drivers/oci8/oci8_utility.php
 create mode 100644 system/database/drivers/odbc/index.html
 create mode 100644 system/database/drivers/odbc/odbc_driver.php
 create mode 100644 system/database/drivers/odbc/odbc_forge.php
 create mode 100644 system/database/drivers/odbc/odbc_result.php
 create mode 100644 system/database/drivers/odbc/odbc_utility.php
 create mode 100644 system/database/drivers/pdo/index.html
 create mode 100644 system/database/drivers/pdo/pdo_driver.php
 create mode 100644 system/database/drivers/pdo/pdo_forge.php
 create mode 100644 system/database/drivers/pdo/pdo_result.php
 create mode 100644 system/database/drivers/pdo/pdo_utility.php
 create mode 100644 system/database/drivers/pdo/subdrivers/index.html
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_4d_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_4d_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_cubrid_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_cubrid_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_dblib_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_firebird_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_ibm_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_ibm_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_informix_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_informix_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_mysql_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_oci_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_oci_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_odbc_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_sqlite_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_sqlite_forge.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php
 create mode 100644 system/database/drivers/pdo/subdrivers/pdo_sqlsrv_forge.php
 create mode 100644 system/database/drivers/postgre/index.html
 create mode 100644 system/database/drivers/postgre/postgre_driver.php
 create mode 100644 system/database/drivers/postgre/postgre_forge.php
 create mode 100644 system/database/drivers/postgre/postgre_result.php
 create mode 100644 system/database/drivers/postgre/postgre_utility.php
 create mode 100644 system/database/drivers/sqlite3/index.html
 create mode 100644 system/database/drivers/sqlite3/sqlite3_driver.php
 create mode 100644 system/database/drivers/sqlite3/sqlite3_forge.php
 create mode 100644 system/database/drivers/sqlite3/sqlite3_result.php
 create mode 100644 system/database/drivers/sqlite3/sqlite3_utility.php
 create mode 100644 system/database/drivers/sqlsrv/index.html
 create mode 100644 system/database/drivers/sqlsrv/sqlsrv_driver.php
 create mode 100644 system/database/drivers/sqlsrv/sqlsrv_forge.php
 create mode 100644 system/database/drivers/sqlsrv/sqlsrv_result.php
 create mode 100644 system/database/drivers/sqlsrv/sqlsrv_utility.php
 create mode 100644 system/database/index.html
 create mode 100644 system/fonts/index.html
 create mode 100644 system/fonts/texb.ttf
 create mode 100644 system/helpers/array_helper.php
 create mode 100644 system/helpers/captcha_helper.php
 create mode 100644 system/helpers/cookie_helper.php
 create mode 100644 system/helpers/date_helper.php
 create mode 100644 system/helpers/directory_helper.php
 create mode 100644 system/helpers/download_helper.php
 create mode 100644 system/helpers/file_helper.php
 create mode 100644 system/helpers/form_helper.php
 create mode 100644 system/helpers/html_helper.php
 create mode 100644 system/helpers/index.html
 create mode 100644 system/helpers/inflector_helper.php
 create mode 100644 system/helpers/language_helper.php
 create mode 100644 system/helpers/number_helper.php
 create mode 100644 system/helpers/path_helper.php
 create mode 100644 system/helpers/security_helper.php
 create mode 100644 system/helpers/string_helper.php
 create mode 100644 system/helpers/text_helper.php
 create mode 100644 system/helpers/typography_helper.php
 create mode 100644 system/helpers/url_helper.php
 create mode 100644 system/helpers/xml_helper.php
 create mode 100644 system/index.html
 create mode 100644 system/language/english/calendar_lang.php
 create mode 100644 system/language/english/date_lang.php
 create mode 100644 system/language/english/db_lang.php
 create mode 100644 system/language/english/email_lang.php
 create mode 100644 system/language/english/form_validation_lang.php
 create mode 100644 system/language/english/ftp_lang.php
 create mode 100644 system/language/english/imglib_lang.php
 create mode 100644 system/language/english/index.html
 create mode 100644 system/language/english/migration_lang.php
 create mode 100644 system/language/english/number_lang.php
 create mode 100644 system/language/english/pagination_lang.php
 create mode 100644 system/language/english/profiler_lang.php
 create mode 100644 system/language/english/unit_test_lang.php
 create mode 100644 system/language/english/upload_lang.php
 create mode 100644 system/language/index.html
 create mode 100644 system/libraries/Cache/Cache.php
 create mode 100644 system/libraries/Cache/drivers/Cache_apc.php
 create mode 100644 system/libraries/Cache/drivers/Cache_apcu.php
 create mode 100644 system/libraries/Cache/drivers/Cache_dummy.php
 create mode 100644 system/libraries/Cache/drivers/Cache_file.php
 create mode 100644 system/libraries/Cache/drivers/Cache_memcached.php
 create mode 100644 system/libraries/Cache/drivers/Cache_redis.php
 create mode 100644 system/libraries/Cache/drivers/Cache_wincache.php
 create mode 100644 system/libraries/Cache/drivers/index.html
 create mode 100644 system/libraries/Cache/index.html
 create mode 100644 system/libraries/Calendar.php
 create mode 100644 system/libraries/Driver.php
 create mode 100644 system/libraries/Email.php
 create mode 100644 system/libraries/Encrypt.php
 create mode 100644 system/libraries/Encryption.php
 create mode 100644 system/libraries/Form_validation.php
 create mode 100644 system/libraries/Ftp.php
 create mode 100644 system/libraries/Image_lib.php
 create mode 100644 system/libraries/Migration.php
 create mode 100644 system/libraries/Pagination.php
 create mode 100644 system/libraries/Parser.php
 create mode 100644 system/libraries/Profiler.php
 create mode 100644 system/libraries/Session/Session.php
 create mode 100644 system/libraries/Session/Session_driver.php
 create mode 100644 system/libraries/Session/drivers/Session_database_driver.php
 create mode 100644 system/libraries/Session/drivers/Session_files_driver.php
 create mode 100644 system/libraries/Session/drivers/Session_memcached_driver.php
 create mode 100644 system/libraries/Session/drivers/Session_redis_driver.php
 create mode 100644 system/libraries/Session/drivers/index.html
 create mode 100644 system/libraries/Session/index.html
 create mode 100644 system/libraries/Table.php
 create mode 100644 system/libraries/Trackback.php
 create mode 100644 system/libraries/Typography.php
 create mode 100644 system/libraries/Unit_test.php
 create mode 100644 system/libraries/Upload.php
 create mode 100644 system/libraries/User_agent.php
 create mode 100644 system/libraries/Xmlrpc.php
 create mode 100644 system/libraries/Xmlrpcs.php
 create mode 100644 system/libraries/Zip.php
 create mode 100644 system/libraries/index.html

diff --git a/composer.json b/composer.json
index cb18245d..9faad569 100644
--- a/composer.json
+++ b/composer.json
@@ -31,12 +31,6 @@
             "EA\\Engine\\": "engine/"
         }
     },
-    "repositories": [
-        {
-            "type": "vcs",
-            "url": "https://github.com/alextselegidis/CodeIgniter.git"
-        }
-    ],
     "require": {
         "php": ">=7.3",
         "ext-curl": "*",
@@ -45,7 +39,6 @@
         "ext-gd": "*",
         "gregwar/captcha": "^1.1",
         "phpmailer/phpmailer": "^6.1",
-        "codeigniter/framework": "dev-3.1.11-php8.0",
         "jsvrcek/ics": "^0.8",
         "monolog/monolog": "^1",
         "google/apiclient": "^2.0"
diff --git a/composer.lock b/composer.lock
index eed2ed87..16b03a30 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,46 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "497c61b934beb02136c67ffa45347eb7",
+    "content-hash": "38fd62b1f2842600782427033aa9e826",
     "packages": [
-        {
-            "name": "codeigniter/framework",
-            "version": "dev-3.1.11-php8.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/alextselegidis/CodeIgniter.git",
-                "reference": "0648ae2acb3fae84f2cc49e15edb345ccef6cad5"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/alextselegidis/CodeIgniter/zipball/0648ae2acb3fae84f2cc49e15edb345ccef6cad5",
-                "reference": "0648ae2acb3fae84f2cc49e15edb345ccef6cad5",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.4.8"
-            },
-            "require-dev": {
-                "mikey179/vfsstream": "1.1.*",
-                "phpunit/phpunit": "4.* || 5.*"
-            },
-            "suggest": {
-                "paragonie/random_compat": "Provides better randomness in PHP 5.x"
-            },
-            "type": "project",
-            "license": [
-                "MIT"
-            ],
-            "description": "The CodeIgniter framework",
-            "homepage": "https://codeigniter.com",
-            "support": {
-                "forum": "https://forum.codeigniter.com/",
-                "wiki": "https://github.com/bcit-ci/CodeIgniter/wiki",
-                "slack": "https://codeigniterchat.slack.com",
-                "source": "https://github.com/bcit-ci/CodeIgniter"
-            },
-            "time": "2021-03-10T20:11:52+00:00"
-        },
         {
             "name": "firebase/php-jwt",
             "version": "v5.4.0",
@@ -3785,7 +3747,6 @@
     "aliases": [],
     "minimum-stability": "stable",
     "stability-flags": {
-        "codeigniter/framework": 20,
         "roave/security-advisories": 20
     },
     "prefer-stable": false,
diff --git a/index.php b/index.php
index b7548e6b..b1a40558 100644
--- a/index.php
+++ b/index.php
@@ -123,7 +123,7 @@ switch (ENVIRONMENT)
  * This variable must contain the name of your "system" directory.
  * Set the path if it is not in the same directory as this file.
  */
-	$system_path = 'vendor/codeigniter/framework/system';
+	$system_path = 'system';
 
 /*
  *---------------------------------------------------------------
diff --git a/system/.htaccess b/system/.htaccess
new file mode 100644
index 00000000..97c65d2d
--- /dev/null
+++ b/system/.htaccess
@@ -0,0 +1,6 @@
+<IfModule authz_core_module>
+	Require all denied
+</IfModule>
+<IfModule !authz_core_module>
+	Deny from all
+</IfModule>
\ No newline at end of file
diff --git a/system/core/Benchmark.php b/system/core/Benchmark.php
new file mode 100644
index 00000000..0b48d4d0
--- /dev/null
+++ b/system/core/Benchmark.php
@@ -0,0 +1,133 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Benchmark Class
+ *
+ * This class enables you to mark points and calculate the time difference
+ * between them. Memory consumption can also be displayed.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/benchmark.html
+ */
+class CI_Benchmark {
+
+	/**
+	 * List of all benchmark markers
+	 *
+	 * @var	array
+	 */
+	public $marker = array();
+
+	/**
+	 * Set a benchmark marker
+	 *
+	 * Multiple calls to this function can be made so that several
+	 * execution points can be timed.
+	 *
+	 * @param	string	$name	Marker name
+	 * @return	void
+	 */
+	public function mark($name)
+	{
+		$this->marker[$name] = microtime(TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Elapsed time
+	 *
+	 * Calculates the time difference between two marked points.
+	 *
+	 * If the first parameter is empty this function instead returns the
+	 * {elapsed_time} pseudo-variable. This permits the full system
+	 * execution time to be shown in a template. The output class will
+	 * swap the real value for this variable.
+	 *
+	 * @param	string	$point1		A particular marked point
+	 * @param	string	$point2		A particular marked point
+	 * @param	int	$decimals	Number of decimal places
+	 *
+	 * @return	string	Calculated elapsed time on success,
+	 *			an '{elapsed_string}' if $point1 is empty
+	 *			or an empty string if $point1 is not found.
+	 */
+	public function elapsed_time($point1 = '', $point2 = '', $decimals = 4)
+	{
+		if ($point1 === '')
+		{
+			return '{elapsed_time}';
+		}
+
+		if ( ! isset($this->marker[$point1]))
+		{
+			return '';
+		}
+
+		if ( ! isset($this->marker[$point2]))
+		{
+			$this->marker[$point2] = microtime(TRUE);
+		}
+
+		return number_format($this->marker[$point2] - $this->marker[$point1], $decimals);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Memory Usage
+	 *
+	 * Simply returns the {memory_usage} marker.
+	 *
+	 * This permits it to be put it anywhere in a template
+	 * without the memory being calculated until the end.
+	 * The output class will swap the real value for this variable.
+	 *
+	 * @return	string	'{memory_usage}'
+	 */
+	public function memory_usage()
+	{
+		return '{memory_usage}';
+	}
+
+}
diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php
new file mode 100644
index 00000000..704539ef
--- /dev/null
+++ b/system/core/CodeIgniter.php
@@ -0,0 +1,508 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * System Initialization File
+ *
+ * Loads the base classes and executes the request.
+ *
+ * @package		CodeIgniter
+ * @subpackage	CodeIgniter
+ * @category	Front-controller
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/
+ */
+
+/**
+ * CodeIgniter Version
+ *
+ * @var	string
+ *
+ */
+	const CI_VERSION = '3.2.0-dev';
+
+/*
+ * ------------------------------------------------------
+ *  Load the framework constants
+ * ------------------------------------------------------
+ */
+	if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/constants.php'))
+	{
+		require_once(APPPATH.'config/'.ENVIRONMENT.'/constants.php');
+	}
+
+	if (file_exists(APPPATH.'config/constants.php'))
+	{
+		require_once(APPPATH.'config/constants.php');
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Load the global functions
+ * ------------------------------------------------------
+ */
+	require_once(BASEPATH.'core/Common.php');
+
+/*
+ * ------------------------------------------------------
+ *  Define a custom error handler so we can log PHP errors
+ * ------------------------------------------------------
+ */
+	set_error_handler('_error_handler');
+	set_exception_handler('_exception_handler');
+	register_shutdown_function('_shutdown_handler');
+
+/*
+ * ------------------------------------------------------
+ *  Set the subclass_prefix
+ * ------------------------------------------------------
+ *
+ * Normally the "subclass_prefix" is set in the config file.
+ * The subclass prefix allows CI to know if a core class is
+ * being extended via a library in the local application
+ * "libraries" folder. Since CI allows config items to be
+ * overridden via data set in the main index.php file,
+ * before proceeding we need to know if a subclass_prefix
+ * override exists. If so, we will set this value now,
+ * before any classes are loaded
+ * Note: Since the config file data is cached it doesn't
+ * hurt to load it here.
+ */
+	if ( ! empty($assign_to_config['subclass_prefix']))
+	{
+		get_config(array('subclass_prefix' => $assign_to_config['subclass_prefix']));
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Should we use a Composer autoloader?
+ * ------------------------------------------------------
+ */
+	if ($composer_autoload = config_item('composer_autoload'))
+	{
+		if ($composer_autoload === TRUE)
+		{
+			file_exists(APPPATH.'vendor/autoload.php')
+				? require_once(APPPATH.'vendor/autoload.php')
+				: log_message('error', '$config[\'composer_autoload\'] is set to TRUE but '.APPPATH.'vendor/autoload.php was not found.');
+		}
+		elseif (file_exists($composer_autoload))
+		{
+			require_once($composer_autoload);
+		}
+		else
+		{
+			log_message('error', 'Could not find the specified $config[\'composer_autoload\'] path: '.$composer_autoload);
+		}
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Start the timer... tick tock tick tock...
+ * ------------------------------------------------------
+ */
+	$BM =& load_class('Benchmark', 'core');
+	$BM->mark('total_execution_time_start');
+	$BM->mark('loading_time:_base_classes_start');
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the config class
+ * ------------------------------------------------------
+ *
+ * Note: It is important that Config is loaded first as
+ * most other classes depend on it either directly or by
+ * depending on another class that uses it.
+ *
+ */
+	$CFG =& load_class('Config', 'core');
+
+	// Do we have any manually set config items in the index.php file?
+	if (isset($assign_to_config) && is_array($assign_to_config))
+	{
+		foreach ($assign_to_config as $key => $value)
+		{
+			$CFG->set_item($key, $value);
+		}
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the hooks class
+ * ------------------------------------------------------
+ */
+	$EXT =& load_class('Hooks', 'core', $CFG);
+
+/*
+ * ------------------------------------------------------
+ *  Is there a "pre_system" hook?
+ * ------------------------------------------------------
+ */
+	$EXT->call_hook('pre_system');
+
+/*
+ * ------------------------------------------------------
+ * Important charset-related stuff
+ * ------------------------------------------------------
+ *
+ * Configure mbstring and/or iconv if they are enabled
+ * and set MB_ENABLED and ICONV_ENABLED constants, so
+ * that we don't repeatedly do extension_loaded() or
+ * function_exists() calls.
+ *
+ * Note: UTF-8 class depends on this. It used to be done
+ * in it's constructor, but it's _not_ class-specific.
+ *
+ */
+	$charset = strtoupper(config_item('charset'));
+	ini_set('default_charset', $charset);
+
+	if (extension_loaded('mbstring'))
+	{
+		define('MB_ENABLED', TRUE);
+		// mbstring.internal_encoding is deprecated starting with PHP 5.6
+		// and it's usage triggers E_DEPRECATED messages.
+		@ini_set('mbstring.internal_encoding', $charset);
+		// This is required for mb_convert_encoding() to strip invalid characters.
+		// That's utilized by CI_Utf8, but it's also done for consistency with iconv.
+		mb_substitute_character('none');
+	}
+	else
+	{
+		define('MB_ENABLED', FALSE);
+	}
+
+	// There's an ICONV_IMPL constant, but the PHP manual says that using
+	// iconv's predefined constants is "strongly discouraged".
+	if (extension_loaded('iconv'))
+	{
+		define('ICONV_ENABLED', TRUE);
+		// iconv.internal_encoding is deprecated starting with PHP 5.6
+		// and it's usage triggers E_DEPRECATED messages.
+		@ini_set('iconv.internal_encoding', $charset);
+	}
+	else
+	{
+		define('ICONV_ENABLED', FALSE);
+	}
+
+	if (is_php('5.6'))
+	{
+		ini_set('php.internal_encoding', $charset);
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Load compatibility features
+ * ------------------------------------------------------
+ */
+
+	require_once(BASEPATH.'core/compat/mbstring.php');
+	require_once(BASEPATH.'core/compat/hash.php');
+	require_once(BASEPATH.'core/compat/password.php');
+	require_once(BASEPATH.'core/compat/standard.php');
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the UTF-8 class
+ * ------------------------------------------------------
+ */
+	$UNI =& load_class('Utf8', 'core', $charset);
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the URI class
+ * ------------------------------------------------------
+ */
+	$URI =& load_class('URI', 'core', $CFG);
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the routing class and set the routing
+ * ------------------------------------------------------
+ */
+	$RTR =& load_class('Router', 'core', isset($routing) ? $routing : NULL);
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the output class
+ * ------------------------------------------------------
+ */
+	$OUT =& load_class('Output', 'core');
+
+/*
+ * ------------------------------------------------------
+ *	Is there a valid cache file? If so, we're done...
+ * ------------------------------------------------------
+ */
+	if ($EXT->call_hook('cache_override') === FALSE && $OUT->_display_cache($CFG, $URI) === TRUE)
+	{
+		exit;
+	}
+
+/*
+ * -----------------------------------------------------
+ * Load the security class for xss and csrf support
+ * -----------------------------------------------------
+ */
+	$SEC =& load_class('Security', 'core', $charset);
+
+/*
+ * ------------------------------------------------------
+ *  Load the Input class and sanitize globals
+ * ------------------------------------------------------
+ */
+	$IN =& load_class('Input', 'core', $SEC);
+
+/*
+ * ------------------------------------------------------
+ *  Load the Language class
+ * ------------------------------------------------------
+ */
+	$LANG =& load_class('Lang', 'core');
+
+/*
+ * ------------------------------------------------------
+ *  Load the app controller and local controller
+ * ------------------------------------------------------
+ *
+ */
+	// Load the base controller class
+	require_once BASEPATH.'core/Controller.php';
+
+	/**
+	 * Reference to the CI_Controller method.
+	 *
+	 * Returns current CI instance object
+	 *
+	 * @return CI_Controller
+	 */
+	function &get_instance()
+	{
+		return CI_Controller::get_instance();
+	}
+
+	if (file_exists(APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php'))
+	{
+		require_once APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php';
+	}
+
+	// Set a mark point for benchmarking
+	$BM->mark('loading_time:_base_classes_end');
+
+/*
+ * ------------------------------------------------------
+ *  Sanity checks
+ * ------------------------------------------------------
+ *
+ *  The Router class has already validated the request,
+ *  leaving us with 3 options here:
+ *
+ *	1) an empty class name, if we reached the default
+ *	   controller, but it didn't exist;
+ *	2) a query string which doesn't go through a
+ *	   file_exists() check
+ *	3) a regular request for a non-existing page
+ *
+ *  We handle all of these as a 404 error.
+ *
+ *  Furthermore, none of the methods in the app controller
+ *  or the loader class can be called via the URI, nor can
+ *  controller methods that begin with an underscore.
+ */
+
+	$e404 = FALSE;
+	$class = ucfirst($RTR->class);
+	$method = $RTR->method;
+
+	if (empty($class) OR ! file_exists(APPPATH.'controllers/'.$RTR->directory.$class.'.php'))
+	{
+		$e404 = TRUE;
+	}
+	else
+	{
+		require_once(APPPATH.'controllers/'.$RTR->directory.$class.'.php');
+
+		if ( ! class_exists($class, FALSE) OR $method[0] === '_' OR method_exists('CI_Controller', $method))
+		{
+			$e404 = TRUE;
+		}
+		elseif (method_exists($class, '_remap'))
+		{
+			$params = array($method, array_slice($URI->rsegments, 2));
+			$method = '_remap';
+		}
+		elseif ( ! method_exists($class, $method))
+		{
+			$e404 = TRUE;
+		}
+		/**
+		 * DO NOT CHANGE THIS, NOTHING ELSE WORKS!
+		 *
+		 * - method_exists() returns true for non-public methods, which passes the previous elseif
+		 * - is_callable() returns false for PHP 4-style constructors, even if there's a __construct()
+		 * - method_exists($class, '__construct') won't work because CI_Controller::__construct() is inherited
+		 * - People will only complain if this doesn't work, even though it is documented that it shouldn't.
+		 *
+		 * ReflectionMethod::isConstructor() is the ONLY reliable check,
+		 * knowing which method will be executed as a constructor.
+		 */
+		else
+		{
+			$reflection = new ReflectionMethod($class, $method);
+			if ( ! $reflection->isPublic() OR $reflection->isConstructor())
+			{
+				$e404 = TRUE;
+			}
+		}
+	}
+
+	if ($e404)
+	{
+		if ( ! empty($RTR->routes['404_override']))
+		{
+			if (sscanf($RTR->routes['404_override'], '%[^/]/%s', $error_class, $error_method) !== 2)
+			{
+				$error_method = 'index';
+			}
+
+			$error_class = ucfirst($error_class);
+
+			if ( ! class_exists($error_class, FALSE))
+			{
+				if (file_exists(APPPATH.'controllers/'.$RTR->directory.$error_class.'.php'))
+				{
+					require_once(APPPATH.'controllers/'.$RTR->directory.$error_class.'.php');
+					$e404 = ! class_exists($error_class, FALSE);
+				}
+				// Were we in a directory? If so, check for a global override
+				elseif ( ! empty($RTR->directory) && file_exists(APPPATH.'controllers/'.$error_class.'.php'))
+				{
+					require_once(APPPATH.'controllers/'.$error_class.'.php');
+					if (($e404 = ! class_exists($error_class, FALSE)) === FALSE)
+					{
+						$RTR->directory = '';
+					}
+				}
+			}
+			else
+			{
+				$e404 = FALSE;
+			}
+		}
+
+		// Did we reset the $e404 flag? If so, set the rsegments, starting from index 1
+		if ( ! $e404)
+		{
+			$class = $error_class;
+			$method = $error_method;
+
+			$URI->rsegments = array(
+				1 => $class,
+				2 => $method
+			);
+		}
+		else
+		{
+			show_404($RTR->directory.$class.'/'.$method);
+		}
+	}
+
+	if ($method !== '_remap')
+	{
+		$params = array_slice($URI->rsegments, 2);
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Is there a "pre_controller" hook?
+ * ------------------------------------------------------
+ */
+	$EXT->call_hook('pre_controller');
+
+/*
+ * ------------------------------------------------------
+ *  Instantiate the requested controller
+ * ------------------------------------------------------
+ */
+	// Mark a start point so we can benchmark the controller
+	$BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_start');
+
+	$CI = new $class();
+
+/*
+ * ------------------------------------------------------
+ *  Is there a "post_controller_constructor" hook?
+ * ------------------------------------------------------
+ */
+	$EXT->call_hook('post_controller_constructor');
+
+/*
+ * ------------------------------------------------------
+ *  Call the requested method
+ * ------------------------------------------------------
+ */
+	call_user_func_array(array(&$CI, $method), $params);
+
+	// Mark a benchmark end point
+	$BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_end');
+
+/*
+ * ------------------------------------------------------
+ *  Is there a "post_controller" hook?
+ * ------------------------------------------------------
+ */
+	$EXT->call_hook('post_controller');
+
+/*
+ * ------------------------------------------------------
+ *  Send the final rendered output to the browser
+ * ------------------------------------------------------
+ */
+	if ($EXT->call_hook('display_override') === FALSE)
+	{
+		$OUT->_display();
+	}
+
+/*
+ * ------------------------------------------------------
+ *  Is there a "post_system" hook?
+ * ------------------------------------------------------
+ */
+	$EXT->call_hook('post_system');
diff --git a/system/core/Common.php b/system/core/Common.php
new file mode 100644
index 00000000..ed96de0c
--- /dev/null
+++ b/system/core/Common.php
@@ -0,0 +1,853 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Common Functions
+ *
+ * Loads the base classes and executes the request.
+ *
+ * @package		CodeIgniter
+ * @subpackage	CodeIgniter
+ * @category	Common Functions
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('is_php'))
+{
+	/**
+	 * Determines if the current version of PHP is equal to or greater than the supplied value
+	 *
+	 * @param	string
+	 * @return	bool	TRUE if the current version is $version or higher
+	 */
+	function is_php($version)
+	{
+		static $_is_php;
+		$version = (string) $version;
+
+		if ( ! isset($_is_php[$version]))
+		{
+			$_is_php[$version] = version_compare(PHP_VERSION, $version, '>=');
+		}
+
+		return $_is_php[$version];
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('is_really_writable'))
+{
+	/**
+	 * Tests for file writability
+	 *
+	 * is_writable() returns TRUE on Windows servers when you really can't write to
+	 * the file, based on the read-only attribute.
+	 *
+	 * @link	https://bugs.php.net/bug.php?id=54709
+	 * @param	string
+	 * @return	bool
+	 */
+	function is_really_writable($file)
+	{
+		// If we're on a UNIX-like server, just is_writable()
+		if (DIRECTORY_SEPARATOR === '/')
+		{
+			return is_writable($file);
+		}
+
+		/* For Windows servers and safe_mode "on" installations we'll actually
+		 * write a file then read it. Bah...
+		 */
+		if (is_dir($file))
+		{
+			$file = rtrim($file, '/').'/'.md5(mt_rand());
+			if (($fp = @fopen($file, 'ab')) === FALSE)
+			{
+				return FALSE;
+			}
+
+			fclose($fp);
+			@chmod($file, 0777);
+			@unlink($file);
+			return TRUE;
+		}
+		elseif ( ! is_file($file) OR ($fp = @fopen($file, 'ab')) === FALSE)
+		{
+			return FALSE;
+		}
+
+		fclose($fp);
+		return TRUE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('load_class'))
+{
+	/**
+	 * Class registry
+	 *
+	 * This function acts as a singleton. If the requested class does not
+	 * exist it is instantiated and set to a static variable. If it has
+	 * previously been instantiated the variable is returned.
+	 *
+	 * @param	string	the class name being requested
+	 * @param	string	the directory where the class should be found
+	 * @param	mixed	an optional argument to pass to the class constructor
+	 * @return	object
+	 */
+	function &load_class($class, $directory = 'libraries', $param = NULL)
+	{
+		static $_classes = array();
+
+		// Does the class exist? If so, we're done...
+		if (isset($_classes[$class]))
+		{
+			return $_classes[$class];
+		}
+
+		$name = FALSE;
+
+		// Look for the class first in the local application/libraries folder
+		// then in the native system/libraries folder
+		foreach (array(APPPATH, BASEPATH) as $path)
+		{
+			if (file_exists($path.$directory.'/'.$class.'.php'))
+			{
+				$name = 'CI_'.$class;
+
+				if (class_exists($name, FALSE) === FALSE)
+				{
+					require_once($path.$directory.'/'.$class.'.php');
+				}
+
+				break;
+			}
+		}
+
+		// Is the request a class extension? If so we load it too
+		if (file_exists(APPPATH.$directory.'/'.config_item('subclass_prefix').$class.'.php'))
+		{
+			$name = config_item('subclass_prefix').$class;
+
+			if (class_exists($name, FALSE) === FALSE)
+			{
+				require_once(APPPATH.$directory.'/'.$name.'.php');
+			}
+		}
+
+		// Did we find the class?
+		if ($name === FALSE)
+		{
+			// Note: We use exit() rather than show_error() in order to avoid a
+			// self-referencing loop with the Exceptions class
+			set_status_header(503);
+			echo 'Unable to locate the specified class: '.$class.'.php';
+			exit(5); // EXIT_UNK_CLASS
+		}
+
+		// Keep track of what we just loaded
+		is_loaded($class);
+
+		$_classes[$class] = isset($param)
+			? new $name($param)
+			: new $name();
+		return $_classes[$class];
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('is_loaded'))
+{
+	/**
+	 * Keeps track of which libraries have been loaded. This function is
+	 * called by the load_class() function above
+	 *
+	 * @param	string
+	 * @return	array
+	 */
+	function &is_loaded($class = '')
+	{
+		static $_is_loaded = array();
+
+		if ($class !== '')
+		{
+			$_is_loaded[strtolower($class)] = $class;
+		}
+
+		return $_is_loaded;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('get_config'))
+{
+	/**
+	 * Loads the main config.php file
+	 *
+	 * This function lets us grab the config file even if the Config class
+	 * hasn't been instantiated yet
+	 *
+	 * @param	array
+	 * @return	array
+	 */
+	function &get_config(Array $replace = array())
+	{
+		static $config;
+
+		if (empty($config))
+		{
+			$file_path = APPPATH.'config/config.php';
+			$found = FALSE;
+			if (file_exists($file_path))
+			{
+				$found = TRUE;
+				require($file_path);
+			}
+
+			// Is the config file in the environment folder?
+			if (file_exists($file_path = APPPATH.'config/'.ENVIRONMENT.'/config.php'))
+			{
+				require($file_path);
+			}
+			elseif ( ! $found)
+			{
+				set_status_header(503);
+				echo 'The configuration file does not exist.';
+				exit(3); // EXIT_CONFIG
+			}
+
+			// Does the $config array exist in the file?
+			if ( ! isset($config) OR ! is_array($config))
+			{
+				set_status_header(503);
+				echo 'Your config file does not appear to be formatted correctly.';
+				exit(3); // EXIT_CONFIG
+			}
+		}
+
+		// Are any values being dynamically added or replaced?
+		foreach ($replace as $key => $val)
+		{
+			$config[$key] = $val;
+		}
+
+		return $config;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('config_item'))
+{
+	/**
+	 * Returns the specified config item
+	 *
+	 * @param	string
+	 * @return	mixed
+	 */
+	function config_item($item)
+	{
+		static $_config;
+
+		if (empty($_config))
+		{
+			// references cannot be directly assigned to static variables, so we use an array
+			$_config[0] =& get_config();
+		}
+
+		return isset($_config[0][$item]) ? $_config[0][$item] : NULL;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('get_mimes'))
+{
+	/**
+	 * Returns the MIME types array from config/mimes.php
+	 *
+	 * @return	array
+	 */
+	function &get_mimes()
+	{
+		static $_mimes;
+
+		if (empty($_mimes))
+		{
+			$_mimes = file_exists(APPPATH.'config/mimes.php')
+				? include(APPPATH.'config/mimes.php')
+				: array();
+
+			if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/mimes.php'))
+			{
+				$_mimes = array_merge($_mimes, include(APPPATH.'config/'.ENVIRONMENT.'/mimes.php'));
+			}
+		}
+
+		return $_mimes;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('is_https'))
+{
+	/**
+	 * Is HTTPS?
+	 *
+	 * Determines if the application is accessed via an encrypted
+	 * (HTTPS) connection.
+	 *
+	 * @return	bool
+	 */
+	function is_https()
+	{
+		if ( ! empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off')
+		{
+			return TRUE;
+		}
+		elseif (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']) === 'https')
+		{
+			return TRUE;
+		}
+		elseif ( ! empty($_SERVER['HTTP_FRONT_END_HTTPS']) && strtolower($_SERVER['HTTP_FRONT_END_HTTPS']) !== 'off')
+		{
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('is_cli'))
+{
+
+	/**
+	 * Is CLI?
+	 *
+	 * Test to see if a request was made from the command line.
+	 *
+	 * @return 	bool
+	 */
+	function is_cli()
+	{
+		return (PHP_SAPI === 'cli' OR defined('STDIN'));
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('show_error'))
+{
+	/**
+	 * Error Handler
+	 *
+	 * This function lets us invoke the exception class and
+	 * display errors using the standard error template located
+	 * in application/views/errors/error_general.php
+	 * This function will send the error page directly to the
+	 * browser and exit.
+	 *
+	 * @param	string
+	 * @param	int
+	 * @param	string
+	 * @return	void
+	 */
+	function show_error($message, $status_code = 500, $heading = 'An Error Was Encountered')
+	{
+		$status_code = abs($status_code);
+		if ($status_code < 100)
+		{
+			$exit_status = $status_code + 9; // 9 is EXIT__AUTO_MIN
+			$status_code = 500;
+		}
+		else
+		{
+			$exit_status = 1; // EXIT_ERROR
+		}
+
+		$_error =& load_class('Exceptions', 'core');
+		echo $_error->show_error($heading, $message, 'error_general', $status_code);
+		exit($exit_status);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('show_404'))
+{
+	/**
+	 * 404 Page Handler
+	 *
+	 * This function is similar to the show_error() function above
+	 * However, instead of the standard error template it displays
+	 * 404 errors.
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	void
+	 */
+	function show_404($page = '', $log_error = TRUE)
+	{
+		$_error =& load_class('Exceptions', 'core');
+		$_error->show_404($page, $log_error);
+		exit(4); // EXIT_UNKNOWN_FILE
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('log_message'))
+{
+	/**
+	 * Error Logging Interface
+	 *
+	 * We use this as a simple mechanism to access the logging
+	 * class and send messages to be logged.
+	 *
+	 * @param	string	the error level: 'error', 'debug' or 'info'
+	 * @param	string	the error message
+	 * @return	void
+	 */
+	function log_message($level, $message)
+	{
+		static $_log;
+
+		if ($_log === NULL)
+		{
+			// references cannot be directly assigned to static variables, so we use an array
+			$_log[0] =& load_class('Log', 'core');
+		}
+
+		$_log[0]->write_log($level, $message);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_status_header'))
+{
+	/**
+	 * Set HTTP Status Header
+	 *
+	 * @param	int	the status code
+	 * @param	string
+	 * @return	void
+	 */
+	function set_status_header($code = 200, $text = '')
+	{
+		if (is_cli())
+		{
+			return;
+		}
+
+		if (empty($code) OR ! is_numeric($code))
+		{
+			show_error('Status codes must be numeric', 500);
+		}
+
+		if (empty($text))
+		{
+			is_int($code) OR $code = (int) $code;
+			$stati = array(
+				100	=> 'Continue',
+				101	=> 'Switching Protocols',
+				103	=> 'Early Hints',
+
+				200	=> 'OK',
+				201	=> 'Created',
+				202	=> 'Accepted',
+				203	=> 'Non-Authoritative Information',
+				204	=> 'No Content',
+				205	=> 'Reset Content',
+				206	=> 'Partial Content',
+				207	=> 'Multi-Status',
+
+				300	=> 'Multiple Choices',
+				301	=> 'Moved Permanently',
+				302	=> 'Found',
+				303	=> 'See Other',
+				304	=> 'Not Modified',
+				305	=> 'Use Proxy',
+				307	=> 'Temporary Redirect',
+				308	=> 'Permanent Redirect',
+
+				400	=> 'Bad Request',
+				401	=> 'Unauthorized',
+				402	=> 'Payment Required',
+				403	=> 'Forbidden',
+				404	=> 'Not Found',
+				405	=> 'Method Not Allowed',
+				406	=> 'Not Acceptable',
+				407	=> 'Proxy Authentication Required',
+				408	=> 'Request Timeout',
+				409	=> 'Conflict',
+				410	=> 'Gone',
+				411	=> 'Length Required',
+				412	=> 'Precondition Failed',
+				413	=> 'Request Entity Too Large',
+				414	=> 'Request-URI Too Long',
+				415	=> 'Unsupported Media Type',
+				416	=> 'Requested Range Not Satisfiable',
+				417	=> 'Expectation Failed',
+				421	=> 'Misdirected Request',
+				422	=> 'Unprocessable Entity',
+				426	=> 'Upgrade Required',
+				428	=> 'Precondition Required',
+				429	=> 'Too Many Requests',
+				431	=> 'Request Header Fields Too Large',
+				451	=> 'Unavailable For Legal Reasons',
+
+				500	=> 'Internal Server Error',
+				501	=> 'Not Implemented',
+				502	=> 'Bad Gateway',
+				503	=> 'Service Unavailable',
+				504	=> 'Gateway Timeout',
+				505	=> 'HTTP Version Not Supported',
+				511	=> 'Network Authentication Required',
+			);
+
+			if (isset($stati[$code]))
+			{
+				$text = $stati[$code];
+			}
+			else
+			{
+				show_error('No status text available. Please check your status code number or supply your own message text.', 500);
+			}
+		}
+
+		if (strpos(PHP_SAPI, 'cgi') === 0)
+		{
+			header('Status: '.$code.' '.$text, TRUE);
+			return;
+		}
+
+		$server_protocol = (isset($_SERVER['SERVER_PROTOCOL']) && in_array($_SERVER['SERVER_PROTOCOL'], array('HTTP/1.0', 'HTTP/1.1', 'HTTP/2', 'HTTP/2.0'), TRUE))
+			? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.1';
+		header($server_protocol.' '.$code.' '.$text, TRUE, $code);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('_error_handler'))
+{
+	/**
+	 * Error Handler
+	 *
+	 * This is the custom error handler that is declared at the (relative)
+	 * top of CodeIgniter.php. The main reason we use this is to permit
+	 * PHP errors to be logged in our own log files since the user may
+	 * not have access to server logs. Since this function effectively
+	 * intercepts PHP errors, however, we also need to display errors
+	 * based on the current error_reporting level.
+	 * We do that with the use of a PHP error template.
+	 *
+	 * @param	int	$severity
+	 * @param	string	$message
+	 * @param	string	$filepath
+	 * @param	int	$line
+	 * @return	void
+	 */
+	function _error_handler($severity, $message, $filepath, $line)
+	{
+		$is_error = (((E_ERROR | E_PARSE | E_COMPILE_ERROR | E_CORE_ERROR | E_USER_ERROR) & $severity) === $severity);
+
+		// When an error occurred, set the status header to '500 Internal Server Error'
+		// to indicate to the client something went wrong.
+		// This can't be done within the $_error->show_php_error method because
+		// it is only called when the display_errors flag is set (which isn't usually
+		// the case in a production environment) or when errors are ignored because
+		// they are above the error_reporting threshold.
+		if ($is_error)
+		{
+			set_status_header(500);
+		}
+
+		// Should we ignore the error? We'll get the current error_reporting
+		// level and add its bits with the severity bits to find out.
+		if (($severity & error_reporting()) !== $severity)
+		{
+			return;
+		}
+
+		$_error =& load_class('Exceptions', 'core');
+		$_error->log_exception($severity, $message, $filepath, $line);
+
+		// Should we display the error?
+		if (str_ireplace(array('off', 'none', 'no', 'false', 'null'), '', ini_get('display_errors')))
+		{
+			$_error->show_php_error($severity, $message, $filepath, $line);
+		}
+
+		// If the error is fatal, the execution of the script should be stopped because
+		// errors can't be recovered from. Halting the script conforms with PHP's
+		// default error handling. See https://secure.php.net/manual/en/errorfunc.constants.php
+		if ($is_error)
+		{
+			exit(1); // EXIT_ERROR
+		}
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_exception_handler'))
+{
+	/**
+	 * Exception Handler
+	 *
+	 * Sends uncaught exceptions to the logger and displays them
+	 * only if display_errors is On so that they don't show up in
+	 * production environments.
+	 *
+	 * @param	Exception	$exception
+	 * @return	void
+	 */
+	function _exception_handler($exception)
+	{
+		$_error =& load_class('Exceptions', 'core');
+		$_error->log_exception('error', 'Exception: '.$exception->getMessage(), $exception->getFile(), $exception->getLine());
+
+		is_cli() OR set_status_header(500);
+		// Should we display the error?
+		if (str_ireplace(array('off', 'none', 'no', 'false', 'null'), '', ini_get('display_errors')))
+		{
+			$_error->show_exception($exception);
+		}
+
+		exit(1); // EXIT_ERROR
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_shutdown_handler'))
+{
+	/**
+	 * Shutdown Handler
+	 *
+	 * This is the shutdown handler that is declared at the top
+	 * of CodeIgniter.php. The main reason we use this is to simulate
+	 * a complete custom exception handler.
+	 *
+	 * E_STRICT is purposively neglected because such events may have
+	 * been caught. Duplication or none? None is preferred for now.
+	 *
+	 * @link	http://insomanic.me.uk/post/229851073/php-trick-catching-fatal-errors-e-error-with-a
+	 * @return	void
+	 */
+	function _shutdown_handler()
+	{
+		$last_error = error_get_last();
+		if (isset($last_error) &&
+			($last_error['type'] & (E_ERROR | E_PARSE | E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_COMPILE_WARNING)))
+		{
+			_error_handler($last_error['type'], $last_error['message'], $last_error['file'], $last_error['line']);
+		}
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('remove_invisible_characters'))
+{
+	/**
+	 * Remove Invisible Characters
+	 *
+	 * This prevents sandwiching null characters
+	 * between ascii characters, like Java\0script.
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	function remove_invisible_characters($str, $url_encoded = TRUE)
+	{
+		$non_displayables = array();
+
+		// every control character except newline (dec 10),
+		// carriage return (dec 13) and horizontal tab (dec 09)
+		if ($url_encoded)
+		{
+			$non_displayables[] = '/%0[0-8bcef]/i';	// url encoded 00-08, 11, 12, 14, 15
+			$non_displayables[] = '/%1[0-9a-f]/i';	// url encoded 16-31
+			$non_displayables[] = '/%7f/i';	// url encoded 127
+		}
+
+		$non_displayables[] = '/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]+/S';	// 00-08, 11, 12, 14-31, 127
+
+		do
+		{
+			$str = preg_replace($non_displayables, '', $str, -1, $count);
+		}
+		while ($count);
+
+		return $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('html_escape'))
+{
+	/**
+	 * Returns HTML escaped variable.
+	 *
+	 * @param	mixed	$var		The input string or array of strings to be escaped.
+	 * @param	bool	$double_encode	$double_encode set to FALSE prevents escaping twice.
+	 * @return	mixed			The escaped string or array of strings as a result.
+	 */
+	function html_escape($var, $double_encode = TRUE)
+	{
+		if (empty($var))
+		{
+			return $var;
+		}
+
+		if (is_array($var))
+		{
+			foreach (array_keys($var) as $key)
+			{
+				$var[$key] = html_escape($var[$key], $double_encode);
+			}
+
+			return $var;
+		}
+
+		return htmlspecialchars($var, ENT_QUOTES, config_item('charset'), $double_encode);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_stringify_attributes'))
+{
+	/**
+	 * Stringify attributes for use in HTML tags.
+	 *
+	 * Helper function used to convert a string, array, or object
+	 * of attributes to a string.
+	 *
+	 * @param	mixed	string, array, object
+	 * @param	bool
+	 * @return	string
+	 */
+	function _stringify_attributes($attributes, $js = FALSE)
+	{
+		$atts = NULL;
+
+		if (empty($attributes))
+		{
+			return $atts;
+		}
+
+		if (is_string($attributes))
+		{
+			return ' '.$attributes;
+		}
+
+		$attributes = (array) $attributes;
+
+		foreach ($attributes as $key => $val)
+		{
+			$atts .= ($js) ? $key.'='.$val.',' : ' '.$key.'="'.$val.'"';
+		}
+
+		return rtrim($atts, ',');
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('function_usable'))
+{
+	/**
+	 * Function usable
+	 *
+	 * Executes a function_exists() check, and if the Suhosin PHP
+	 * extension is loaded - checks whether the function that is
+	 * checked might be disabled in there as well.
+	 *
+	 * This is useful as function_exists() will return FALSE for
+	 * functions disabled via the *disable_functions* php.ini
+	 * setting, but not for *suhosin.executor.func.blacklist* and
+	 * *suhosin.executor.disable_eval*. These settings will just
+	 * terminate script execution if a disabled function is executed.
+	 *
+	 * The above described behavior turned out to be a bug in Suhosin,
+	 * but even though a fix was committed for 0.9.34 on 2012-02-12,
+	 * that version is yet to be released. This function will therefore
+	 * be just temporary, but would probably be kept for a few years.
+	 *
+	 * @link	http://www.hardened-php.net/suhosin/
+	 * @param	string	$function_name	Function to check for
+	 * @return	bool	TRUE if the function exists and is safe to call,
+	 *			FALSE otherwise.
+	 */
+	function function_usable($function_name)
+	{
+		static $_suhosin_func_blacklist;
+
+		if (function_exists($function_name))
+		{
+			if ( ! isset($_suhosin_func_blacklist))
+			{
+				$_suhosin_func_blacklist = extension_loaded('suhosin')
+					? explode(',', trim(ini_get('suhosin.executor.func.blacklist')))
+					: array();
+			}
+
+			return ! in_array($function_name, $_suhosin_func_blacklist, TRUE);
+		}
+
+		return FALSE;
+	}
+}
diff --git a/system/core/Config.php b/system/core/Config.php
new file mode 100644
index 00000000..e6eb0ad9
--- /dev/null
+++ b/system/core/Config.php
@@ -0,0 +1,365 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Config Class
+ *
+ * This class contains functions that enable config files to be managed
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/config.html
+ */
+class CI_Config {
+
+	/**
+	 * List of all loaded config values
+	 *
+	 * @var	array
+	 */
+	public $config = array();
+
+	/**
+	 * List of all loaded config files
+	 *
+	 * @var	array
+	 */
+	public $is_loaded =	array();
+
+	/**
+	 * List of paths to search when trying to load a config file.
+	 *
+	 * @used-by	CI_Loader
+	 * @var		array
+	 */
+	public $_config_paths =	array(APPPATH);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Sets the $config data from the primary config.php file as a class variable.
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$this->config =& get_config();
+
+		// Set the base_url automatically if none was provided
+		if (empty($this->config['base_url']))
+		{
+			if (isset($_SERVER['SERVER_ADDR']))
+			{
+				if (strpos($_SERVER['SERVER_ADDR'], ':') !== FALSE)
+				{
+					$server_addr = '['.$_SERVER['SERVER_ADDR'].']';
+				}
+				else
+				{
+					$server_addr = $_SERVER['SERVER_ADDR'];
+				}
+
+				$base_url = (is_https() ? 'https' : 'http').'://'.$server_addr
+					.substr($_SERVER['SCRIPT_NAME'], 0, strpos($_SERVER['SCRIPT_NAME'], basename($_SERVER['SCRIPT_FILENAME'])));
+			}
+			else
+			{
+				$base_url = 'http://localhost/';
+			}
+
+			$this->set_item('base_url', $base_url);
+		}
+
+		log_message('info', 'Config Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Load Config File
+	 *
+	 * @param	string	$file			Configuration file name
+	 * @param	bool	$use_sections		Whether configuration values should be loaded into their own section
+	 * @param	bool	$fail_gracefully	Whether to just return FALSE or display an error message
+	 * @return	bool	TRUE if the file was loaded correctly or FALSE on failure
+	 */
+	public function load($file = '', $use_sections = FALSE, $fail_gracefully = FALSE)
+	{
+		$file = ($file === '') ? 'config' : str_replace('.php', '', $file);
+		$loaded = FALSE;
+
+		foreach ($this->_config_paths as $path)
+		{
+			foreach (array($file, ENVIRONMENT.DIRECTORY_SEPARATOR.$file) as $location)
+			{
+				$file_path = $path.'config/'.$location.'.php';
+				if (in_array($file_path, $this->is_loaded, TRUE))
+				{
+					return TRUE;
+				}
+
+				if ( ! file_exists($file_path))
+				{
+					continue;
+				}
+
+				include($file_path);
+
+				if ( ! isset($config) OR ! is_array($config))
+				{
+					if ($fail_gracefully === TRUE)
+					{
+						return FALSE;
+					}
+
+					show_error('Your '.$file_path.' file does not appear to contain a valid configuration array.');
+				}
+
+				if ($use_sections === TRUE)
+				{
+					$this->config[$file] = isset($this->config[$file])
+						? array_merge($this->config[$file], $config)
+						: $config;
+				}
+				else
+				{
+					$this->config = array_merge($this->config, $config);
+				}
+
+				$this->is_loaded[] = $file_path;
+				$config = NULL;
+				$loaded = TRUE;
+				log_message('info', 'Config file loaded: '.$file_path);
+			}
+		}
+
+		if ($loaded === TRUE)
+		{
+			return TRUE;
+		}
+		elseif ($fail_gracefully === TRUE)
+		{
+			return FALSE;
+		}
+
+		show_error('The configuration file '.$file.'.php does not exist.');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch a config file item
+	 *
+	 * @param	string	$item	Config item name
+	 * @param	string	$index	Index name
+	 * @return	string|null	The configuration item or NULL if the item doesn't exist
+	 */
+	public function item($item, $index = '')
+	{
+		if ($index == '')
+		{
+			return isset($this->config[$item]) ? $this->config[$item] : NULL;
+		}
+
+		return isset($this->config[$index], $this->config[$index][$item]) ? $this->config[$index][$item] : NULL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch a config file item with slash appended (if not empty)
+	 *
+	 * @param	string		$item	Config item name
+	 * @return	string|null	The configuration item or NULL if the item doesn't exist
+	 */
+	public function slash_item($item)
+	{
+		if ( ! isset($this->config[$item]))
+		{
+			return NULL;
+		}
+		elseif (trim($this->config[$item]) === '')
+		{
+			return '';
+		}
+
+		return rtrim($this->config[$item], '/').'/';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Site URL
+	 *
+	 * Returns base_url . index_page [. uri_string]
+	 *
+	 * @uses	CI_Config::_uri_string()
+	 *
+	 * @param	string|string[]	$uri	URI string or an array of segments
+	 * @param	string	$protocol
+	 * @return	string
+	 */
+	public function site_url($uri = '', $protocol = NULL)
+	{
+		$base_url = $this->slash_item('base_url');
+
+		if (isset($protocol))
+		{
+			// For protocol-relative links
+			if ($protocol === '')
+			{
+				$base_url = substr($base_url, strpos($base_url, '//'));
+			}
+			else
+			{
+				$base_url = $protocol.substr($base_url, strpos($base_url, '://'));
+			}
+		}
+
+		if (empty($uri))
+		{
+			return $base_url.$this->item('index_page');
+		}
+
+		$uri = $this->_uri_string($uri);
+
+		if ($this->item('enable_query_strings') === FALSE)
+		{
+			$suffix = isset($this->config['url_suffix']) ? $this->config['url_suffix'] : '';
+
+			if ($suffix !== '')
+			{
+				if (($offset = strpos($uri, '?')) !== FALSE)
+				{
+					$uri = substr($uri, 0, $offset).$suffix.substr($uri, $offset);
+				}
+				else
+				{
+					$uri .= $suffix;
+				}
+			}
+
+			return $base_url.$this->slash_item('index_page').$uri;
+		}
+		elseif (strpos($uri, '?') === FALSE)
+		{
+			$uri = '?'.$uri;
+		}
+
+		return $base_url.$this->item('index_page').$uri;
+	}
+
+	// -------------------------------------------------------------
+
+	/**
+	 * Base URL
+	 *
+	 * Returns base_url [. uri_string]
+	 *
+	 * @uses	CI_Config::_uri_string()
+	 *
+	 * @param	string|string[]	$uri	URI string or an array of segments
+	 * @param	string	$protocol
+	 * @return	string
+	 */
+	public function base_url($uri = '', $protocol = NULL)
+	{
+		$base_url = $this->slash_item('base_url');
+
+		if (isset($protocol))
+		{
+			// For protocol-relative links
+			if ($protocol === '')
+			{
+				$base_url = substr($base_url, strpos($base_url, '//'));
+			}
+			else
+			{
+				$base_url = $protocol.substr($base_url, strpos($base_url, '://'));
+			}
+		}
+
+		return $base_url.$this->_uri_string($uri);
+	}
+
+	// -------------------------------------------------------------
+
+	/**
+	 * Build URI string
+	 *
+	 * @used-by	CI_Config::site_url()
+	 * @used-by	CI_Config::base_url()
+	 *
+	 * @param	string|string[]	$uri	URI string or an array of segments
+	 * @return	string
+	 */
+	protected function _uri_string($uri)
+	{
+		if ($this->item('enable_query_strings') === FALSE)
+		{
+			is_array($uri) && $uri = implode('/', $uri);
+			return ltrim($uri, '/');
+		}
+		elseif (is_array($uri))
+		{
+			return http_build_query($uri);
+		}
+
+		return $uri;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set a config file item
+	 *
+	 * @param	string	$item	Config item key
+	 * @param	string	$value	Config item value
+	 * @return	void
+	 */
+	public function set_item($item, $value)
+	{
+		$this->config[$item] = $value;
+	}
+
+}
diff --git a/system/core/Controller.php b/system/core/Controller.php
new file mode 100644
index 00000000..ac27989f
--- /dev/null
+++ b/system/core/Controller.php
@@ -0,0 +1,103 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Application Controller Class
+ *
+ * This class object is the super class that every library in
+ * CodeIgniter will be assigned to.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/general/controllers.html
+ */
+class CI_Controller {
+
+	/**
+	 * Reference to the CI singleton
+	 *
+	 * @var	object
+	 */
+	private static $instance;
+
+	/**
+	 * CI_Loader
+	 *
+	 * @var	CI_Loader
+	 */
+	public $load;
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		self::$instance =& $this;
+
+		// Assign all the class objects that were instantiated by the
+		// bootstrap file (CodeIgniter.php) to local class variables
+		// so that CI can run as one big super object.
+		foreach (is_loaded() as $var => $class)
+		{
+			$this->$var =& load_class($class);
+		}
+
+		$this->load =& load_class('Loader', 'core');
+		$this->load->initialize();
+		log_message('info', 'Controller Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the CI singleton
+	 *
+	 * @static
+	 * @return	object
+	 */
+	public static function &get_instance()
+	{
+		return self::$instance;
+	}
+
+}
diff --git a/system/core/Exceptions.php b/system/core/Exceptions.php
new file mode 100644
index 00000000..92c635f9
--- /dev/null
+++ b/system/core/Exceptions.php
@@ -0,0 +1,286 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Exceptions Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Exceptions
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/exceptions.html
+ */
+class CI_Exceptions {
+
+	/**
+	 * Nesting level of the output buffering mechanism
+	 *
+	 * @var	int
+	 */
+	public $ob_level;
+
+	/**
+	 * List of available error levels
+	 *
+	 * @var	array
+	 */
+	public $levels = array(
+		E_ERROR			=>	'Error',
+		E_WARNING		=>	'Warning',
+		E_PARSE			=>	'Parsing Error',
+		E_NOTICE		=>	'Notice',
+		E_CORE_ERROR		=>	'Core Error',
+		E_CORE_WARNING		=>	'Core Warning',
+		E_COMPILE_ERROR		=>	'Compile Error',
+		E_COMPILE_WARNING	=>	'Compile Warning',
+		E_USER_ERROR		=>	'User Error',
+		E_USER_WARNING		=>	'User Warning',
+		E_USER_NOTICE		=>	'User Notice',
+		E_STRICT		=>	'Runtime Notice'
+	);
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$this->ob_level = ob_get_level();
+		// Note: Do not log messages from this constructor.
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Exception Logger
+	 *
+	 * Logs PHP generated error messages
+	 *
+	 * @param	int	$severity	Log level
+	 * @param	string	$message	Error message
+	 * @param	string	$filepath	File path
+	 * @param	int	$line		Line number
+	 * @return	void
+	 */
+	public function log_exception($severity, $message, $filepath, $line)
+	{
+		$severity = isset($this->levels[$severity]) ? $this->levels[$severity] : $severity;
+		log_message('error', 'Severity: '.$severity.' --> '.$message.' '.$filepath.' '.$line);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * 404 Error Handler
+	 *
+	 * @uses	CI_Exceptions::show_error()
+	 *
+	 * @param	string	$page		Page URI
+	 * @param 	bool	$log_error	Whether to log the error
+	 * @return	void
+	 */
+	public function show_404($page = '', $log_error = TRUE)
+	{
+		if (is_cli())
+		{
+			$heading = 'Not Found';
+			$message = 'The controller/method pair you requested was not found.';
+		}
+		else
+		{
+			$heading = '404 Page Not Found';
+			$message = 'The page you requested was not found.';
+		}
+
+		// By default we log this, but allow a dev to skip it
+		if ($log_error)
+		{
+			log_message('error', $heading.': '.$page);
+		}
+
+		echo $this->show_error($heading, $message, 'error_404', 404);
+		exit(4); // EXIT_UNKNOWN_FILE
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * General Error Page
+	 *
+	 * Takes an error message as input (either as a string or an array)
+	 * and displays it using the specified template.
+	 *
+	 * @param	string		$heading	Page heading
+	 * @param	string|string[]	$message	Error message
+	 * @param	string		$template	Template name
+	 * @param 	int		$status_code	(default: 500)
+	 *
+	 * @return	string	Error page output
+	 */
+	public function show_error($heading, $message, $template = 'error_general', $status_code = 500)
+	{
+		$templates_path = config_item('error_views_path');
+		if (empty($templates_path))
+		{
+			$templates_path = VIEWPATH.'errors'.DIRECTORY_SEPARATOR;
+		}
+		else
+		{
+			$templates_path = rtrim($templates_path, '/\\').DIRECTORY_SEPARATOR;
+		}
+
+		if (is_cli())
+		{
+			$message = "\t".(is_array($message) ? implode("\n\t", $message) : $message);
+			$template = 'cli'.DIRECTORY_SEPARATOR.$template;
+		}
+		else
+		{
+			set_status_header($status_code);
+			$message = '<p>'.(is_array($message) ? implode('</p><p>', $message) : $message).'</p>';
+			$template = 'html'.DIRECTORY_SEPARATOR.$template;
+		}
+
+		if (ob_get_level() > $this->ob_level + 1)
+		{
+			ob_end_flush();
+		}
+		ob_start();
+		include($templates_path.$template.'.php');
+		$buffer = ob_get_contents();
+		ob_end_clean();
+		return $buffer;
+	}
+
+	// --------------------------------------------------------------------
+
+	public function show_exception($exception)
+	{
+		$templates_path = config_item('error_views_path');
+		if (empty($templates_path))
+		{
+			$templates_path = VIEWPATH.'errors'.DIRECTORY_SEPARATOR;
+		}
+		else
+		{
+			$templates_path = rtrim($templates_path, '/\\').DIRECTORY_SEPARATOR;
+		}
+
+		$message = $exception->getMessage();
+		if (empty($message))
+		{
+			$message = '(null)';
+		}
+
+		if (is_cli())
+		{
+			$templates_path .= 'cli'.DIRECTORY_SEPARATOR;
+		}
+		else
+		{
+			$templates_path .= 'html'.DIRECTORY_SEPARATOR;
+		}
+
+		if (ob_get_level() > $this->ob_level + 1)
+		{
+			ob_end_flush();
+		}
+
+		ob_start();
+		include($templates_path.'error_exception.php');
+		$buffer = ob_get_contents();
+		ob_end_clean();
+		echo $buffer;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Native PHP error handler
+	 *
+	 * @param	int	$severity	Error level
+	 * @param	string	$message	Error message
+	 * @param	string	$filepath	File path
+	 * @param	int	$line		Line number
+	 * @return	void
+	 */
+	public function show_php_error($severity, $message, $filepath, $line)
+	{
+		$templates_path = config_item('error_views_path');
+		if (empty($templates_path))
+		{
+			$templates_path = VIEWPATH.'errors'.DIRECTORY_SEPARATOR;
+		}
+		else
+		{
+			$templates_path = rtrim($templates_path, '/\\').DIRECTORY_SEPARATOR;
+		}
+
+		$severity = isset($this->levels[$severity]) ? $this->levels[$severity] : $severity;
+
+		// For safety reasons we don't show the full file path in non-CLI requests
+		if ( ! is_cli())
+		{
+			$filepath = str_replace('\\', '/', $filepath);
+			if (FALSE !== strpos($filepath, '/'))
+			{
+				$x = explode('/', $filepath);
+				$filepath = $x[count($x)-2].'/'.end($x);
+			}
+
+			$template = 'html'.DIRECTORY_SEPARATOR.'error_php';
+		}
+		else
+		{
+			$template = 'cli'.DIRECTORY_SEPARATOR.'error_php';
+		}
+
+		if (ob_get_level() > $this->ob_level + 1)
+		{
+			ob_end_flush();
+		}
+		ob_start();
+		include($templates_path.$template.'.php');
+		$buffer = ob_get_contents();
+		ob_end_clean();
+		echo $buffer;
+	}
+
+}
diff --git a/system/core/Hooks.php b/system/core/Hooks.php
new file mode 100644
index 00000000..864c59d2
--- /dev/null
+++ b/system/core/Hooks.php
@@ -0,0 +1,266 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Hooks Class
+ *
+ * Provides a mechanism to extend the base system without hacking.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/general/hooks.html
+ */
+class CI_Hooks {
+
+	/**
+	 * Determines whether hooks are enabled
+	 *
+	 * @var	bool
+	 */
+	public $enabled = FALSE;
+
+	/**
+	 * List of all hooks set in config/hooks.php
+	 *
+	 * @var	array
+	 */
+	public $hooks =	array();
+
+	/**
+	 * Array with class objects to use hooks methods
+	 *
+	 * @var array
+	 */
+	protected $_objects = array();
+
+	/**
+	 * In progress flag
+	 *
+	 * Determines whether hook is in progress, used to prevent infinte loops
+	 *
+	 * @var	bool
+	 */
+	protected $_in_progress = FALSE;
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	CI_Config	$config
+	 * @return	void
+	 */
+	public function __construct(CI_Config $config)
+	{
+		log_message('info', 'Hooks Class Initialized');
+
+		// If hooks are not enabled in the config file
+		// there is nothing else to do
+		if ($config->item('enable_hooks') === FALSE)
+		{
+			return;
+		}
+
+		// Grab the "hooks" definition file.
+		if (file_exists(APPPATH.'config/hooks.php'))
+		{
+			include(APPPATH.'config/hooks.php');
+		}
+
+		if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/hooks.php'))
+		{
+			include(APPPATH.'config/'.ENVIRONMENT.'/hooks.php');
+		}
+
+		// If there are no hooks, we're done.
+		if ( ! isset($hook) OR ! is_array($hook))
+		{
+			return;
+		}
+
+		$this->hooks =& $hook;
+		$this->enabled = TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Call Hook
+	 *
+	 * Calls a particular hook. Called by CodeIgniter.php.
+	 *
+	 * @uses	CI_Hooks::_run_hook()
+	 *
+	 * @param	string	$which	Hook name
+	 * @return	bool	TRUE on success or FALSE on failure
+	 */
+	public function call_hook($which = '')
+	{
+		if ( ! $this->enabled OR ! isset($this->hooks[$which]))
+		{
+			return FALSE;
+		}
+
+		if (is_array($this->hooks[$which]) && ! isset($this->hooks[$which]['function']))
+		{
+			foreach ($this->hooks[$which] as $val)
+			{
+				$this->_run_hook($val);
+			}
+		}
+		else
+		{
+			$this->_run_hook($this->hooks[$which]);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Run Hook
+	 *
+	 * Runs a particular hook
+	 *
+	 * @param	array	$data	Hook details
+	 * @return	bool	TRUE on success or FALSE on failure
+	 */
+	protected function _run_hook($data)
+	{
+		// Closures/lambda functions and array($object, 'method') callables
+		if (is_callable($data))
+		{
+			is_array($data)
+				? $data[0]->{$data[1]}()
+				: $data();
+
+			return TRUE;
+		}
+		elseif ( ! is_array($data))
+		{
+			return FALSE;
+		}
+
+		// -----------------------------------
+		// Safety - Prevents run-away loops
+		// -----------------------------------
+
+		// If the script being called happens to have the same
+		// hook call within it a loop can happen
+		if ($this->_in_progress === TRUE)
+		{
+			return;
+		}
+
+		// -----------------------------------
+		// Set file path
+		// -----------------------------------
+
+		if ( ! isset($data['filepath'], $data['filename']))
+		{
+			return FALSE;
+		}
+
+		$filepath = APPPATH.$data['filepath'].'/'.$data['filename'];
+
+		if ( ! file_exists($filepath))
+		{
+			return FALSE;
+		}
+
+		// Determine and class and/or function names
+		$class		= empty($data['class']) ? FALSE : $data['class'];
+		$function	= empty($data['function']) ? FALSE : $data['function'];
+		$params		= isset($data['params']) ? $data['params'] : '';
+
+		if (empty($function))
+		{
+			return FALSE;
+		}
+
+		// Set the _in_progress flag
+		$this->_in_progress = TRUE;
+
+		// Call the requested class and/or function
+		if ($class !== FALSE)
+		{
+			// The object is stored?
+			if (isset($this->_objects[$class]))
+			{
+				if (method_exists($this->_objects[$class], $function))
+				{
+					$this->_objects[$class]->$function($params);
+				}
+				else
+				{
+					return $this->_in_progress = FALSE;
+				}
+			}
+			else
+			{
+				class_exists($class, FALSE) OR require_once($filepath);
+
+				if ( ! class_exists($class, FALSE) OR ! method_exists($class, $function))
+				{
+					return $this->_in_progress = FALSE;
+				}
+
+				// Store the object and execute the method
+				$this->_objects[$class] = new $class();
+				$this->_objects[$class]->$function($params);
+			}
+		}
+		else
+		{
+			function_exists($function) OR require_once($filepath);
+
+			if ( ! function_exists($function))
+			{
+				return $this->_in_progress = FALSE;
+			}
+
+			$function($params);
+		}
+
+		$this->_in_progress = FALSE;
+		return TRUE;
+	}
+
+}
diff --git a/system/core/Input.php b/system/core/Input.php
new file mode 100644
index 00000000..30d528b8
--- /dev/null
+++ b/system/core/Input.php
@@ -0,0 +1,662 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Input Class
+ *
+ * Pre-processes global input data for security
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Input
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/input.html
+ */
+class CI_Input {
+
+	/**
+	 * IP address of the current user
+	 *
+	 * @var	string
+	 */
+	protected $ip_address = FALSE;
+
+	/**
+	 * List of all HTTP request headers
+	 *
+	 * @var array
+	 */
+	protected $headers = array();
+
+	/**
+	 * Raw input stream data
+	 *
+	 * Holds a cache of php://input contents
+	 *
+	 * @var	string
+	 */
+	protected $_raw_input_stream;
+
+	/**
+	 * Parsed input stream data
+	 *
+	 * Parsed from php://input at runtime
+	 *
+	 * @see	CI_Input::input_stream()
+	 * @var	array
+	 */
+	protected $_input_stream;
+
+	/**
+	 * CI_Security instance
+	 *
+	 * Used for the optional $xss_filter parameter that most
+	 * getter methods have here.
+	 *
+	 * @var	CI_Security
+	 */
+	protected $security;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Determines whether to globally enable the XSS processing
+	 * and whether to allow the $_GET array.
+	 *
+	 * @return	void
+	 */
+	public function __construct(CI_Security &$security)
+	{
+		$this->security = $security;
+		log_message('info', 'Input Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch from array
+	 *
+	 * Internal method used to retrieve values from global arrays.
+	 *
+	 * @param	array	&$array		$_GET, $_POST, $_COOKIE, $_SERVER, etc.
+	 * @param	mixed	$index		Index for item to be fetched from $array
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	protected function _fetch_from_array(&$array, $index = NULL, $xss_clean = FALSE)
+	{
+		// If $index is NULL, it means that the whole $array is requested
+		isset($index) OR $index = array_keys($array);
+
+		// allow fetching multiple keys at once
+		if (is_array($index))
+		{
+			$output = array();
+			foreach ($index as $key)
+			{
+				$output[$key] = $this->_fetch_from_array($array, $key, $xss_clean);
+			}
+
+			return $output;
+		}
+
+		if (isset($array[$index]))
+		{
+			$value = $array[$index];
+		}
+		elseif (($count = preg_match_all('/(?:^[^\[]+)|\[[^]]*\]/', $index, $matches)) > 1) // Does the index contain array notation
+		{
+			$value = $array;
+			for ($i = 0; $i < $count; $i++)
+			{
+				$key = trim($matches[0][$i], '[]');
+				if ($key === '') // Empty notation will return the value as array
+				{
+					break;
+				}
+
+				if (isset($value[$key]))
+				{
+					$value = $value[$key];
+				}
+				else
+				{
+					return NULL;
+				}
+			}
+		}
+		else
+		{
+			return NULL;
+		}
+
+		return ($xss_clean === TRUE)
+			? $this->security->xss_clean($value)
+			: $value;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from the GET array
+	 *
+	 * @param	mixed	$index		Index for item to be fetched from $_GET
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function get($index = NULL, $xss_clean = FALSE)
+	{
+		return $this->_fetch_from_array($_GET, $index, $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from the POST array
+	 *
+	 * @param	mixed	$index		Index for item to be fetched from $_POST
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function post($index = NULL, $xss_clean = FALSE)
+	{
+		return $this->_fetch_from_array($_POST, $index, $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from POST data with fallback to GET
+	 *
+	 * @param	string	$index		Index for item to be fetched from $_POST or $_GET
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function post_get($index, $xss_clean = FALSE)
+	{
+		$output = $this->post($index, $xss_clean);
+		return isset($output) ? $output : $this->get($index, $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from GET data with fallback to POST
+	 *
+	 * @param	string	$index		Index for item to be fetched from $_GET or $_POST
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function get_post($index, $xss_clean = FALSE)
+	{
+		$output = $this->get($index, $xss_clean);
+		return isset($output) ? $output : $this->post($index, $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from the COOKIE array
+	 *
+	 * @param	mixed	$index		Index for item to be fetched from $_COOKIE
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function cookie($index = NULL, $xss_clean = FALSE)
+	{
+		return $this->_fetch_from_array($_COOKIE, $index, $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from the SERVER array
+	 *
+	 * @param	mixed	$index		Index for item to be fetched from $_SERVER
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function server($index, $xss_clean = FALSE)
+	{
+		return $this->_fetch_from_array($_SERVER, $index, $xss_clean);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from the php://input stream
+	 *
+	 * Useful when you need to access PUT, DELETE or PATCH request data.
+	 *
+	 * @param	string	$index		Index for item to be fetched
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	mixed
+	 */
+	public function input_stream($index = NULL, $xss_clean = FALSE)
+	{
+		// Prior to PHP 5.6, the input stream can only be read once,
+		// so we'll need to check if we have already done that first.
+		if ( ! is_array($this->_input_stream))
+		{
+			// $this->raw_input_stream will trigger __get().
+			parse_str($this->raw_input_stream, $this->_input_stream);
+			is_array($this->_input_stream) OR $this->_input_stream = array();
+		}
+
+		return $this->_fetch_from_array($this->_input_stream, $index, $xss_clean);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Set cookie
+	 *
+	 * Accepts an arbitrary number of parameters (up to 7) or an associative
+	 * array in the first parameter containing all the values.
+	 *
+	 * @param	string|mixed[]	$name		Cookie name or an array containing parameters
+	 * @param	string		$value		Cookie value
+	 * @param	int		$expire		Cookie expiration time in seconds
+	 * @param	string		$domain		Cookie domain (e.g.: '.yourdomain.com')
+	 * @param	string		$path		Cookie path (default: '/')
+	 * @param	string		$prefix		Cookie name prefix
+	 * @param	bool		$secure		Whether to only transfer cookies via SSL
+	 * @param	bool		$httponly	Whether to only makes the cookie accessible via HTTP (no javascript)
+	 * @return	void
+	 */
+	public function set_cookie($name, $value = '', $expire = 0, $domain = '', $path = '/', $prefix = '', $secure = NULL, $httponly = NULL)
+	{
+		if (is_array($name))
+		{
+			// always leave 'name' in last place, as the loop will break otherwise, due to $$item
+			foreach (array('value', 'expire', 'domain', 'path', 'prefix', 'secure', 'httponly', 'name') as $item)
+			{
+				if (isset($name[$item]))
+				{
+					$$item = $name[$item];
+				}
+			}
+		}
+
+		if ($prefix === '' && config_item('cookie_prefix') !== '')
+		{
+			$prefix = config_item('cookie_prefix');
+		}
+
+		if ($domain == '' && config_item('cookie_domain') != '')
+		{
+			$domain = config_item('cookie_domain');
+		}
+
+		if ($path === '/' && config_item('cookie_path') !== '/')
+		{
+			$path = config_item('cookie_path');
+		}
+
+		$secure = ($secure === NULL && config_item('cookie_secure') !== NULL)
+			? (bool) config_item('cookie_secure')
+			: (bool) $secure;
+
+		$httponly = ($httponly === NULL && config_item('cookie_httponly') !== NULL)
+			? (bool) config_item('cookie_httponly')
+			: (bool) $httponly;
+
+		if ( ! is_numeric($expire) OR $expire < 0)
+		{
+			$expire = 1;
+		}
+		else
+		{
+			$expire = ($expire > 0) ? time() + $expire : 0;
+		}
+
+		setcookie($prefix.$name, $value, $expire, $path, $domain, $secure, $httponly);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch the IP Address
+	 *
+	 * Determines and validates the visitor's IP address.
+	 *
+	 * @return	string	IP address
+	 */
+	public function ip_address()
+	{
+		if ($this->ip_address !== FALSE)
+		{
+			return $this->ip_address;
+		}
+
+		$proxy_ips = config_item('proxy_ips');
+		if ( ! empty($proxy_ips) && ! is_array($proxy_ips))
+		{
+			$proxy_ips = explode(',', str_replace(' ', '', $proxy_ips));
+		}
+
+		$this->ip_address = $this->server('REMOTE_ADDR');
+
+		if ($proxy_ips)
+		{
+			foreach (array('HTTP_X_FORWARDED_FOR', 'HTTP_CLIENT_IP', 'HTTP_X_CLIENT_IP', 'HTTP_X_CLUSTER_CLIENT_IP') as $header)
+			{
+				if (($spoof = $this->server($header)) !== NULL)
+				{
+					// Some proxies typically list the whole chain of IP
+					// addresses through which the client has reached us.
+					// e.g. client_ip, proxy_ip1, proxy_ip2, etc.
+					sscanf($spoof, '%[^,]', $spoof);
+
+					if ( ! $this->valid_ip($spoof))
+					{
+						$spoof = NULL;
+					}
+					else
+					{
+						break;
+					}
+				}
+			}
+
+			if ($spoof)
+			{
+				for ($i = 0, $c = count($proxy_ips); $i < $c; $i++)
+				{
+					// Check if we have an IP address or a subnet
+					if (strpos($proxy_ips[$i], '/') === FALSE)
+					{
+						// An IP address (and not a subnet) is specified.
+						// We can compare right away.
+						if ($proxy_ips[$i] === $this->ip_address)
+						{
+							$this->ip_address = $spoof;
+							break;
+						}
+
+						continue;
+					}
+
+					// We have a subnet ... now the heavy lifting begins
+					isset($separator) OR $separator = $this->valid_ip($this->ip_address, 'ipv6') ? ':' : '.';
+
+					// If the proxy entry doesn't match the IP protocol - skip it
+					if (strpos($proxy_ips[$i], $separator) === FALSE)
+					{
+						continue;
+					}
+
+					// Convert the REMOTE_ADDR IP address to binary, if needed
+					if ( ! isset($ip, $sprintf))
+					{
+						if ($separator === ':')
+						{
+							// Make sure we're have the "full" IPv6 format
+							$ip = explode(':',
+								str_replace('::',
+									str_repeat(':', 9 - substr_count($this->ip_address, ':')),
+									$this->ip_address
+								)
+							);
+
+							for ($j = 0; $j < 8; $j++)
+							{
+								$ip[$j] = intval($ip[$j], 16);
+							}
+
+							$sprintf = '%016b%016b%016b%016b%016b%016b%016b%016b';
+						}
+						else
+						{
+							$ip = explode('.', $this->ip_address);
+							$sprintf = '%08b%08b%08b%08b';
+						}
+
+						$ip = vsprintf($sprintf, $ip);
+					}
+
+					// Split the netmask length off the network address
+					sscanf($proxy_ips[$i], '%[^/]/%d', $netaddr, $masklen);
+
+					// Again, an IPv6 address is most likely in a compressed form
+					if ($separator === ':')
+					{
+						$netaddr = explode(':', str_replace('::', str_repeat(':', 9 - substr_count($netaddr, ':')), $netaddr));
+						for ($j = 0; $j < 8; $j++)
+						{
+							$netaddr[$j] = intval($netaddr[$j], 16);
+						}
+					}
+					else
+					{
+						$netaddr = explode('.', $netaddr);
+					}
+
+					// Convert to binary and finally compare
+					if (strncmp($ip, vsprintf($sprintf, $netaddr), $masklen) === 0)
+					{
+						$this->ip_address = $spoof;
+						break;
+					}
+				}
+			}
+		}
+
+		if ( ! $this->valid_ip($this->ip_address))
+		{
+			return $this->ip_address = '0.0.0.0';
+		}
+
+		return $this->ip_address;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate IP Address
+	 *
+	 * @param	string	$ip	IP address
+	 * @param	string	$which	IP protocol: 'ipv4' or 'ipv6'
+	 * @return	bool
+	 */
+	public function valid_ip($ip, $which = '')
+	{
+		switch (strtolower($which))
+		{
+			case 'ipv4':
+				$which = FILTER_FLAG_IPV4;
+				break;
+			case 'ipv6':
+				$which = FILTER_FLAG_IPV6;
+				break;
+			default:
+				$which = NULL;
+				break;
+		}
+
+		return (bool) filter_var($ip, FILTER_VALIDATE_IP, $which);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch User Agent string
+	 *
+	 * @return	string|null	User Agent string or NULL if it doesn't exist
+	 */
+	public function user_agent($xss_clean = FALSE)
+	{
+		return $this->_fetch_from_array($_SERVER, 'HTTP_USER_AGENT', $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Request Headers
+	 *
+	 * @param	bool	$xss_clean	Whether to apply XSS filtering
+	 * @return	array
+	 */
+	public function request_headers($xss_clean = FALSE)
+	{
+		// If header is already defined, return it immediately
+		if ( ! empty($this->headers))
+		{
+			return $this->_fetch_from_array($this->headers, NULL, $xss_clean);
+		}
+
+		// In Apache, you can simply call apache_request_headers()
+		if (function_exists('apache_request_headers'))
+		{
+			$this->headers = apache_request_headers();
+		}
+		else
+		{
+			isset($_SERVER['CONTENT_TYPE']) && $this->headers['Content-Type'] = $_SERVER['CONTENT_TYPE'];
+
+			foreach ($_SERVER as $key => $val)
+			{
+				if (sscanf($key, 'HTTP_%s', $header) === 1)
+				{
+					// take SOME_HEADER and turn it into Some-Header
+					$header = str_replace('_', ' ', strtolower($header));
+					$header = str_replace(' ', '-', ucwords($header));
+
+					$this->headers[$header] = $_SERVER[$key];
+				}
+			}
+		}
+
+		return $this->_fetch_from_array($this->headers, NULL, $xss_clean);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Request Header
+	 *
+	 * Returns the value of a single member of the headers class member
+	 *
+	 * @param	string		$index		Header name
+	 * @param	bool		$xss_clean	Whether to apply XSS filtering
+	 * @return	string|null	The requested header on success or NULL on failure
+	 */
+	public function get_request_header($index, $xss_clean = FALSE)
+	{
+		static $headers;
+
+		if ( ! isset($headers))
+		{
+			empty($this->headers) && $this->request_headers();
+			foreach ($this->headers as $key => $value)
+			{
+				$headers[strtolower($key)] = $value;
+			}
+		}
+
+		$index = strtolower($index);
+
+		if ( ! isset($headers[$index]))
+		{
+			return NULL;
+		}
+
+		return ($xss_clean === TRUE)
+			? $this->security->xss_clean($headers[$index])
+			: $headers[$index];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is AJAX request?
+	 *
+	 * Test to see if a request contains the HTTP_X_REQUESTED_WITH header.
+	 *
+	 * @return 	bool
+	 */
+	public function is_ajax_request()
+	{
+		return ( ! empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) === 'xmlhttprequest');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Request Method
+	 *
+	 * Return the request method
+	 *
+	 * @param	bool	$upper	Whether to return in upper or lower case
+	 *				(default: FALSE)
+	 * @return 	string
+	 */
+	public function method($upper = FALSE)
+	{
+		return ($upper)
+			? strtoupper($this->server('REQUEST_METHOD'))
+			: strtolower($this->server('REQUEST_METHOD'));
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Magic __get()
+	 *
+	 * Allows read access to protected properties
+	 *
+	 * @param	string	$name
+	 * @return	mixed
+	 */
+	public function __get($name)
+	{
+		if ($name === 'raw_input_stream')
+		{
+			isset($this->_raw_input_stream) OR $this->_raw_input_stream = file_get_contents('php://input');
+			return $this->_raw_input_stream;
+		}
+		elseif ($name === 'ip_address')
+		{
+			return $this->ip_address;
+		}
+	}
+
+}
diff --git a/system/core/Lang.php b/system/core/Lang.php
new file mode 100644
index 00000000..5cfeaf37
--- /dev/null
+++ b/system/core/Lang.php
@@ -0,0 +1,203 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Language Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Language
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/language.html
+ */
+class CI_Lang {
+
+	/**
+	 * List of translations
+	 *
+	 * @var	array
+	 */
+	public $language =	array();
+
+	/**
+	 * List of loaded language files
+	 *
+	 * @var	array
+	 */
+	public $is_loaded =	array();
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		log_message('info', 'Language Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Load a language file
+	 *
+	 * @param	mixed	$langfile	Language file name
+	 * @param	string	$idiom		Language name (english, etc.)
+	 * @param	bool	$return		Whether to return the loaded array of translations
+	 * @param 	bool	$add_suffix	Whether to add suffix to $langfile
+	 * @param 	string	$alt_path	Alternative path to look for the language file
+	 *
+	 * @return	void|string[]	Array containing translations, if $return is set to TRUE
+	 */
+	public function load($langfile, $idiom = '', $return = FALSE, $add_suffix = TRUE, $alt_path = '')
+	{
+		if (is_array($langfile))
+		{
+			foreach ($langfile as $value)
+			{
+				$this->load($value, $idiom, $return, $add_suffix, $alt_path);
+			}
+
+			return;
+		}
+
+		$langfile = str_replace('.php', '', $langfile);
+
+		if ($add_suffix === TRUE)
+		{
+			$langfile = preg_replace('/_lang$/', '', $langfile).'_lang';
+		}
+
+		$langfile .= '.php';
+
+		if (empty($idiom) OR ! preg_match('/^[a-z_-]+$/i', $idiom))
+		{
+			$config =& get_config();
+			$idiom = empty($config['language']) ? 'english' : $config['language'];
+		}
+
+		if ($return === FALSE && isset($this->is_loaded[$langfile]) && $this->is_loaded[$langfile] === $idiom)
+		{
+			return;
+		}
+
+		// Load the base file, so any others found can override it
+		$basepath = BASEPATH.'language/'.$idiom.'/'.$langfile;
+		if (($found = file_exists($basepath)) === TRUE)
+		{
+			include($basepath);
+		}
+
+		// Do we have an alternative path to look in?
+		if ($alt_path !== '')
+		{
+			$alt_path .= 'language/'.$idiom.'/'.$langfile;
+			if (file_exists($alt_path))
+			{
+				include($alt_path);
+				$found = TRUE;
+			}
+		}
+		else
+		{
+			foreach (get_instance()->load->get_package_paths(TRUE) as $package_path)
+			{
+				$package_path .= 'language/'.$idiom.'/'.$langfile;
+				if ($basepath !== $package_path && file_exists($package_path))
+				{
+					include($package_path);
+					$found = TRUE;
+					break;
+				}
+			}
+		}
+
+		if ($found !== TRUE)
+		{
+			show_error('Unable to load the requested language file: language/'.$idiom.'/'.$langfile);
+		}
+
+		if ( ! isset($lang) OR ! is_array($lang))
+		{
+			log_message('error', 'Language file contains no data: language/'.$idiom.'/'.$langfile);
+
+			if ($return === TRUE)
+			{
+				return array();
+			}
+			return;
+		}
+
+		if ($return === TRUE)
+		{
+			return $lang;
+		}
+
+		$this->is_loaded[$langfile] = $idiom;
+		$this->language = array_merge($this->language, $lang);
+
+		log_message('info', 'Language file loaded: language/'.$idiom.'/'.$langfile);
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Language line
+	 *
+	 * Fetches a single line of text from the language array
+	 *
+	 * @param	string	$line		Language line key
+	 * @param	bool	$log_errors	Whether to log an error message if the line is not found
+	 * @return	string	Translation
+	 */
+	public function line($line, $log_errors = TRUE)
+	{
+		$value = isset($this->language[$line]) ? $this->language[$line] : FALSE;
+
+		// Because killer robots like unicorns!
+		if ($value === FALSE && $log_errors === TRUE)
+		{
+			log_message('error', 'Could not find the language line "'.$line.'"');
+		}
+
+		return $value;
+	}
+
+}
diff --git a/system/core/Loader.php b/system/core/Loader.php
new file mode 100644
index 00000000..d9a1539a
--- /dev/null
+++ b/system/core/Loader.php
@@ -0,0 +1,1405 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Loader Class
+ *
+ * Loads framework components.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Loader
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/loader.html
+ */
+class CI_Loader {
+
+	// All these are set automatically. Don't mess with them.
+	/**
+	 * Nesting level of the output buffering mechanism
+	 *
+	 * @var	int
+	 */
+	protected $_ci_ob_level;
+
+	/**
+	 * List of paths to load views from
+	 *
+	 * @var	array
+	 */
+	protected $_ci_view_paths =	array(VIEWPATH	=> TRUE);
+
+	/**
+	 * List of paths to load libraries from
+	 *
+	 * @var	array
+	 */
+	protected $_ci_library_paths =	array(APPPATH, BASEPATH);
+
+	/**
+	 * List of paths to load models from
+	 *
+	 * @var	array
+	 */
+	protected $_ci_model_paths =	array(APPPATH);
+
+	/**
+	 * List of paths to load helpers from
+	 *
+	 * @var	array
+	 */
+	protected $_ci_helper_paths =	array(APPPATH, BASEPATH);
+
+	/**
+	 * List of cached variables
+	 *
+	 * @var	array
+	 */
+	protected $_ci_cached_vars =	array();
+
+	/**
+	 * List of loaded classes
+	 *
+	 * @var	array
+	 */
+	protected $_ci_classes =	array();
+
+	/**
+	 * List of loaded models
+	 *
+	 * @var	array
+	 */
+	protected $_ci_models =	array();
+
+	/**
+	 * List of loaded helpers
+	 *
+	 * @var	array
+	 */
+	protected $_ci_helpers =	array();
+
+	/**
+	 * List of class name mappings
+	 *
+	 * @var	array
+	 */
+	protected $_ci_varmap =	array(
+		'unit_test' => 'unit',
+		'user_agent' => 'agent'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Sets component load paths, gets the initial output buffering level.
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$this->_ci_ob_level = ob_get_level();
+		$this->_ci_classes =& is_loaded();
+
+		log_message('info', 'Loader Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initializer
+	 *
+	 * @todo	Figure out a way to move this to the constructor
+	 *		without breaking *package_path*() methods.
+	 * @uses	CI_Loader::_ci_autoloader()
+	 * @used-by	CI_Controller::__construct()
+	 * @return	void
+	 */
+	public function initialize()
+	{
+		$this->_ci_autoloader();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is Loaded
+	 *
+	 * A utility method to test if a class is in the self::$_ci_classes array.
+	 *
+	 * @used-by	Mainly used by Form Helper function _get_validation_object().
+	 *
+	 * @param 	string		$class	Class name to check for
+	 * @return 	string|bool	Class object name if loaded or FALSE
+	 */
+	public function is_loaded($class)
+	{
+		return array_search(ucfirst($class), $this->_ci_classes, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Library Loader
+	 *
+	 * Loads and instantiates libraries.
+	 * Designed to be called from application controllers.
+	 *
+	 * @param	mixed	$library	Library name
+	 * @param	array	$params		Optional parameters to pass to the library class constructor
+	 * @param	string	$object_name	An optional object name to assign to
+	 * @return	object
+	 */
+	public function library($library, $params = NULL, $object_name = NULL)
+	{
+		if (empty($library))
+		{
+			return $this;
+		}
+		elseif (is_array($library))
+		{
+			foreach ($library as $key => $value)
+			{
+				if (is_int($key))
+				{
+					$this->library($value, $params);
+				}
+				else
+				{
+					$this->library($key, $params, $value);
+				}
+			}
+
+			return $this;
+		}
+
+		if ($params !== NULL && ! is_array($params))
+		{
+			$params = NULL;
+		}
+
+		$this->_ci_load_library($library, $params, $object_name);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Model Loader
+	 *
+	 * Loads and instantiates models.
+	 *
+	 * @param	mixed	$model		Model name
+	 * @param	string	$name		An optional object name to assign to
+	 * @param	bool	$db_conn	An optional database connection configuration to initialize
+	 * @return	object
+	 */
+	public function model($model, $name = '', $db_conn = FALSE)
+	{
+		if (empty($model))
+		{
+			return $this;
+		}
+		elseif (is_array($model))
+		{
+			foreach ($model as $key => $value)
+			{
+				is_int($key) ? $this->model($value, '', $db_conn) : $this->model($key, $value, $db_conn);
+			}
+
+			return $this;
+		}
+
+		$path = '';
+
+		// Is the model in a sub-folder? If so, parse out the filename and path.
+		if (($last_slash = strrpos($model, '/')) !== FALSE)
+		{
+			// The path is in front of the last slash
+			$path = substr($model, 0, ++$last_slash);
+
+			// And the model name behind it
+			$model = substr($model, $last_slash);
+		}
+
+		if (empty($name))
+		{
+			$name = $model;
+		}
+
+		if (in_array($name, $this->_ci_models, TRUE))
+		{
+			return $this;
+		}
+
+		$CI =& get_instance();
+		if (isset($CI->$name))
+		{
+			throw new RuntimeException('The model name you are loading is the name of a resource that is already being used: '.$name);
+		}
+
+		if ($db_conn !== FALSE && ! class_exists('CI_DB', FALSE))
+		{
+			if ($db_conn === TRUE)
+			{
+				$db_conn = '';
+			}
+
+			$this->database($db_conn, FALSE, TRUE);
+		}
+
+		// Note: All of the code under this condition used to be just:
+		//
+		//       load_class('Model', 'core');
+		//
+		//       However, load_class() instantiates classes
+		//       to cache them for later use and that prevents
+		//       MY_Model from being an abstract class and is
+		//       sub-optimal otherwise anyway.
+		if ( ! class_exists('CI_Model', FALSE))
+		{
+			$app_path = APPPATH.'core'.DIRECTORY_SEPARATOR;
+			if (file_exists($app_path.'Model.php'))
+			{
+				require_once($app_path.'Model.php');
+				if ( ! class_exists('CI_Model', FALSE))
+				{
+					throw new RuntimeException($app_path."Model.php exists, but doesn't declare class CI_Model");
+				}
+
+				log_message('info', 'CI_Model class loaded');
+			}
+			elseif ( ! class_exists('CI_Model', FALSE))
+			{
+				require_once(BASEPATH.'core'.DIRECTORY_SEPARATOR.'Model.php');
+			}
+
+			$class = config_item('subclass_prefix').'Model';
+			if (file_exists($app_path.$class.'.php'))
+			{
+				require_once($app_path.$class.'.php');
+				if ( ! class_exists($class, FALSE))
+				{
+					throw new RuntimeException($app_path.$class.".php exists, but doesn't declare class ".$class);
+				}
+
+				log_message('info', config_item('subclass_prefix').'Model class loaded');
+			}
+		}
+
+		$model = ucfirst($model);
+		if ( ! class_exists($model, FALSE))
+		{
+			foreach ($this->_ci_model_paths as $mod_path)
+			{
+				if ( ! file_exists($mod_path.'models/'.$path.$model.'.php'))
+				{
+					continue;
+				}
+
+				require_once($mod_path.'models/'.$path.$model.'.php');
+				if ( ! class_exists($model, FALSE))
+				{
+					throw new RuntimeException($mod_path."models/".$path.$model.".php exists, but doesn't declare class ".$model);
+				}
+
+				break;
+			}
+
+			if ( ! class_exists($model, FALSE))
+			{
+				throw new RuntimeException('Unable to locate the model you have specified: '.$model);
+			}
+		}
+
+		if ( ! is_subclass_of($model, 'CI_Model'))
+		{
+			throw new RuntimeException("Class ".$model." doesn't extend CI_Model");
+		}
+
+		$this->_ci_models[] = $name;
+		$model = new $model();
+		$CI->$name = $model;
+		log_message('info', 'Model "'.get_class($model).'" initialized');
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database Loader
+	 *
+	 * @param	mixed	$params		Database configuration options
+	 * @param	bool	$return 	Whether to return the database object
+	 * @param	bool	$query_builder	Whether to enable Query Builder
+	 *					(overrides the configuration setting)
+	 *
+	 * @return	object|bool	Database object if $return is set to TRUE,
+	 *					FALSE on failure, CI_Loader instance in any other case
+	 */
+	public function database($params = '', $return = FALSE, $query_builder = NULL)
+	{
+		// Grab the super object
+		$CI =& get_instance();
+
+		// Do we even need to load the database class?
+		if ($return === FALSE && $query_builder === NULL && isset($CI->db) && is_object($CI->db) && ! empty($CI->db->conn_id))
+		{
+			return FALSE;
+		}
+
+		require_once(BASEPATH.'database/DB.php');
+
+		if ($return === TRUE)
+		{
+			return DB($params, $query_builder);
+		}
+
+		// Initialize the db variable. Needed to prevent
+		// reference errors with some configurations
+		$CI->db = '';
+
+		// Load the DB class
+		$CI->db =& DB($params, $query_builder);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Load the Database Utilities Class
+	 *
+	 * @param	object	$db	Database object
+	 * @param	bool	$return	Whether to return the DB Utilities class object or not
+	 * @return	object
+	 */
+	public function dbutil($db = NULL, $return = FALSE)
+	{
+		$CI =& get_instance();
+
+		if ( ! is_object($db) OR ! ($db instanceof CI_DB))
+		{
+			class_exists('CI_DB', FALSE) OR $this->database();
+			$db =& $CI->db;
+		}
+
+		require_once(BASEPATH.'database/DB_utility.php');
+		require_once(BASEPATH.'database/drivers/'.$db->dbdriver.'/'.$db->dbdriver.'_utility.php');
+		$class = 'CI_DB_'.$db->dbdriver.'_utility';
+
+		if ($return === TRUE)
+		{
+			return new $class($db);
+		}
+
+		$CI->dbutil = new $class($db);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Load the Database Forge Class
+	 *
+	 * @param	object	$db	Database object
+	 * @param	bool	$return	Whether to return the DB Forge class object or not
+	 * @return	object
+	 */
+	public function dbforge($db = NULL, $return = FALSE)
+	{
+		$CI =& get_instance();
+		if ( ! is_object($db) OR ! ($db instanceof CI_DB))
+		{
+			class_exists('CI_DB', FALSE) OR $this->database();
+			$db =& $CI->db;
+		}
+
+		require_once(BASEPATH.'database/DB_forge.php');
+		require_once(BASEPATH.'database/drivers/'.$db->dbdriver.'/'.$db->dbdriver.'_forge.php');
+
+		if ( ! empty($db->subdriver))
+		{
+			$driver_path = BASEPATH.'database/drivers/'.$db->dbdriver.'/subdrivers/'.$db->dbdriver.'_'.$db->subdriver.'_forge.php';
+			if (file_exists($driver_path))
+			{
+				require_once($driver_path);
+				$class = 'CI_DB_'.$db->dbdriver.'_'.$db->subdriver.'_forge';
+			}
+		}
+		else
+		{
+			$class = 'CI_DB_'.$db->dbdriver.'_forge';
+		}
+
+		if ($return === TRUE)
+		{
+			return new $class($db);
+		}
+
+		$CI->dbforge = new $class($db);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * View Loader
+	 *
+	 * Loads "view" files.
+	 *
+	 * @param	string	$view	View name
+	 * @param	array	$vars	An associative array of data
+	 *				to be extracted for use in the view
+	 * @param	bool	$return	Whether to return the view output
+	 *				or leave it to the Output class
+	 * @return	object|string
+	 */
+	public function view($view, $vars = array(), $return = FALSE)
+	{
+		return $this->_ci_load(array('_ci_view' => $view, '_ci_vars' => $this->_ci_prepare_view_vars($vars), '_ci_return' => $return));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generic File Loader
+	 *
+	 * @param	string	$path	File path
+	 * @param	bool	$return	Whether to return the file output
+	 * @return	object|string
+	 */
+	public function file($path, $return = FALSE)
+	{
+		return $this->_ci_load(array('_ci_path' => $path, '_ci_return' => $return));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Variables
+	 *
+	 * Once variables are set they become available within
+	 * the controller class and its "view" files.
+	 *
+	 * @param	array|object|string	$vars
+	 *					An associative array or object containing values
+	 *					to be set, or a value's name if string
+	 * @param 	string	$val	Value to set, only used if $vars is a string
+	 * @return	object
+	 */
+	public function vars($vars, $val = '')
+	{
+		$vars = is_string($vars)
+			? array($vars => $val)
+			: $this->_ci_prepare_view_vars($vars);
+
+		foreach ($vars as $key => $val)
+		{
+			$this->_ci_cached_vars[$key] = $val;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Clear Cached Variables
+	 *
+	 * Clears the cached variables.
+	 *
+	 * @return	CI_Loader
+	 */
+	public function clear_vars()
+	{
+		$this->_ci_cached_vars = array();
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Variable
+	 *
+	 * Check if a variable is set and retrieve it.
+	 *
+	 * @param	string	$key	Variable name
+	 * @return	mixed	The variable or NULL if not found
+	 */
+	public function get_var($key)
+	{
+		return isset($this->_ci_cached_vars[$key]) ? $this->_ci_cached_vars[$key] : NULL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Variables
+	 *
+	 * Retrieves all loaded variables.
+	 *
+	 * @return	array
+	 */
+	public function get_vars()
+	{
+		return $this->_ci_cached_vars;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Helper Loader
+	 *
+	 * @param	string|string[]	$helpers	Helper name(s)
+	 * @return	object
+	 */
+	public function helper($helpers = array())
+	{
+		is_array($helpers) OR $helpers = array($helpers);
+		foreach ($helpers as &$helper)
+		{
+			$filename = basename($helper);
+			$filepath = ($filename === $helper) ? '' : substr($helper, 0, strlen($helper) - strlen($filename));
+			$filename = strtolower(preg_replace('#(_helper)?(\.php)?$#i', '', $filename)).'_helper';
+			$helper   = $filepath.$filename;
+
+			if (isset($this->_ci_helpers[$helper]))
+			{
+				continue;
+			}
+
+			// Is this a helper extension request?
+			$ext_helper = config_item('subclass_prefix').$filename;
+			$ext_loaded = FALSE;
+			foreach ($this->_ci_helper_paths as $path)
+			{
+				if (file_exists($path.'helpers/'.$ext_helper.'.php'))
+				{
+					include_once($path.'helpers/'.$ext_helper.'.php');
+					$ext_loaded = TRUE;
+				}
+			}
+
+			// If we have loaded extensions - check if the base one is here
+			if ($ext_loaded === TRUE)
+			{
+				$base_helper = BASEPATH.'helpers/'.$helper.'.php';
+				if ( ! file_exists($base_helper))
+				{
+					show_error('Unable to load the requested file: helpers/'.$helper.'.php');
+				}
+
+				include_once($base_helper);
+				$this->_ci_helpers[$helper] = TRUE;
+				log_message('info', 'Helper loaded: '.$helper);
+				continue;
+			}
+
+			// No extensions found ... try loading regular helpers and/or overrides
+			foreach ($this->_ci_helper_paths as $path)
+			{
+				if (file_exists($path.'helpers/'.$helper.'.php'))
+				{
+					include_once($path.'helpers/'.$helper.'.php');
+
+					$this->_ci_helpers[$helper] = TRUE;
+					log_message('info', 'Helper loaded: '.$helper);
+					break;
+				}
+			}
+
+			// unable to load the helper
+			if ( ! isset($this->_ci_helpers[$helper]))
+			{
+				show_error('Unable to load the requested file: helpers/'.$helper.'.php');
+			}
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Load Helpers
+	 *
+	 * An alias for the helper() method in case the developer has
+	 * written the plural form of it.
+	 *
+	 * @uses	CI_Loader::helper()
+	 * @param	string|string[]	$helpers	Helper name(s)
+	 * @return	object
+	 */
+	public function helpers($helpers = array())
+	{
+		return $this->helper($helpers);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Language Loader
+	 *
+	 * Loads language files.
+	 *
+	 * @param	string|string[]	$files	List of language file names to load
+	 * @param	string		Language name
+	 * @return	object
+	 */
+	public function language($files, $lang = '')
+	{
+		get_instance()->lang->load($files, $lang);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Config Loader
+	 *
+	 * Loads a config file (an alias for CI_Config::load()).
+	 *
+	 * @uses	CI_Config::load()
+	 * @param	string	$file			Configuration file name
+	 * @param	bool	$use_sections		Whether configuration values should be loaded into their own section
+	 * @param	bool	$fail_gracefully	Whether to just return FALSE or display an error message
+	 * @return	bool	TRUE if the file was loaded correctly or FALSE on failure
+	 */
+	public function config($file, $use_sections = FALSE, $fail_gracefully = FALSE)
+	{
+		return get_instance()->config->load($file, $use_sections, $fail_gracefully);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Driver Loader
+	 *
+	 * Loads a driver library.
+	 *
+	 * @param	string|string[]	$library	Driver name(s)
+	 * @param	array		$params		Optional parameters to pass to the driver
+	 * @param	string		$object_name	An optional object name to assign to
+	 *
+	 * @return	object|bool	Object or FALSE on failure if $library is a string
+	 *				and $object_name is set. CI_Loader instance otherwise.
+	 */
+	public function driver($library, $params = NULL, $object_name = NULL)
+	{
+		if (is_array($library))
+		{
+			foreach ($library as $key => $value)
+			{
+				if (is_int($key))
+				{
+					$this->driver($value, $params);
+				}
+				else
+				{
+					$this->driver($key, $params, $value);
+				}
+			}
+
+			return $this;
+		}
+		elseif (empty($library))
+		{
+			return FALSE;
+		}
+
+		if ( ! class_exists('CI_Driver_Library', FALSE))
+		{
+			// We aren't instantiating an object here, just making the base class available
+			require BASEPATH.'libraries/Driver.php';
+		}
+
+		// We can save the loader some time since Drivers will *always* be in a subfolder,
+		// and typically identically named to the library
+		if ( ! strpos($library, '/'))
+		{
+			$library = ucfirst($library).'/'.$library;
+		}
+
+		return $this->library($library, $params, $object_name);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Package Path
+	 *
+	 * Prepends a parent path to the library, model, helper and config
+	 * path arrays.
+	 *
+	 * @see	CI_Loader::$_ci_library_paths
+	 * @see	CI_Loader::$_ci_model_paths
+	 * @see CI_Loader::$_ci_helper_paths
+	 * @see CI_Config::$_config_paths
+	 *
+	 * @param	string	$path		Path to add
+	 * @param 	bool	$view_cascade	(default: TRUE)
+	 * @return	object
+	 */
+	public function add_package_path($path, $view_cascade = TRUE)
+	{
+		$path = rtrim($path, '/').'/';
+
+		array_unshift($this->_ci_library_paths, $path);
+		array_unshift($this->_ci_model_paths, $path);
+		array_unshift($this->_ci_helper_paths, $path);
+
+		$this->_ci_view_paths = array($path.'views/' => $view_cascade) + $this->_ci_view_paths;
+
+		// Add config file path
+		$config =& $this->_ci_get_component('config');
+		$config->_config_paths[] = $path;
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Package Paths
+	 *
+	 * Return a list of all package paths.
+	 *
+	 * @param	bool	$include_base	Whether to include BASEPATH (default: FALSE)
+	 * @return	array
+	 */
+	public function get_package_paths($include_base = FALSE)
+	{
+		return ($include_base === TRUE) ? $this->_ci_library_paths : $this->_ci_model_paths;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Remove Package Path
+	 *
+	 * Remove a path from the library, model, helper and/or config
+	 * path arrays if it exists. If no path is provided, the most recently
+	 * added path will be removed removed.
+	 *
+	 * @param	string	$path	Path to remove
+	 * @return	object
+	 */
+	public function remove_package_path($path = '')
+	{
+		$config =& $this->_ci_get_component('config');
+
+		if ($path === '')
+		{
+			array_shift($this->_ci_library_paths);
+			array_shift($this->_ci_model_paths);
+			array_shift($this->_ci_helper_paths);
+			array_shift($this->_ci_view_paths);
+			array_pop($config->_config_paths);
+		}
+		else
+		{
+			$path = rtrim($path, '/').'/';
+			foreach (array('_ci_library_paths', '_ci_model_paths', '_ci_helper_paths') as $var)
+			{
+				if (($key = array_search($path, $this->{$var})) !== FALSE)
+				{
+					unset($this->{$var}[$key]);
+				}
+			}
+
+			if (isset($this->_ci_view_paths[$path.'views/']))
+			{
+				unset($this->_ci_view_paths[$path.'views/']);
+			}
+
+			if (($key = array_search($path, $config->_config_paths)) !== FALSE)
+			{
+				unset($config->_config_paths[$key]);
+			}
+		}
+
+		// make sure the application default paths are still in the array
+		$this->_ci_library_paths = array_unique(array_merge($this->_ci_library_paths, array(APPPATH, BASEPATH)));
+		$this->_ci_helper_paths = array_unique(array_merge($this->_ci_helper_paths, array(APPPATH, BASEPATH)));
+		$this->_ci_model_paths = array_unique(array_merge($this->_ci_model_paths, array(APPPATH)));
+		$this->_ci_view_paths = array_merge($this->_ci_view_paths, array(APPPATH.'views/' => TRUE));
+		$config->_config_paths = array_unique(array_merge($config->_config_paths, array(APPPATH)));
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal CI Data Loader
+	 *
+	 * Used to load views and files.
+	 *
+	 * Variables are prefixed with _ci_ to avoid symbol collision with
+	 * variables made available to view files.
+	 *
+	 * @used-by	CI_Loader::view()
+	 * @used-by	CI_Loader::file()
+	 * @param	array	$_ci_data	Data to load
+	 * @return	object
+	 */
+	protected function _ci_load($_ci_data)
+	{
+		// Set the default data variables
+		foreach (array('_ci_view', '_ci_vars', '_ci_path', '_ci_return') as $_ci_val)
+		{
+			$$_ci_val = isset($_ci_data[$_ci_val]) ? $_ci_data[$_ci_val] : FALSE;
+		}
+
+		$file_exists = FALSE;
+
+		// Set the path to the requested file
+		if (is_string($_ci_path) && $_ci_path !== '')
+		{
+			$_ci_x = explode('/', $_ci_path);
+			$_ci_file = end($_ci_x);
+		}
+		else
+		{
+			$_ci_ext = pathinfo($_ci_view, PATHINFO_EXTENSION);
+			$_ci_file = ($_ci_ext === '') ? $_ci_view.'.php' : $_ci_view;
+
+			foreach ($this->_ci_view_paths as $_ci_view_file => $cascade)
+			{
+				if (file_exists($_ci_view_file.$_ci_file))
+				{
+					$_ci_path = $_ci_view_file.$_ci_file;
+					$file_exists = TRUE;
+					break;
+				}
+
+				if ( ! $cascade)
+				{
+					break;
+				}
+			}
+		}
+
+		if ( ! $file_exists && ! file_exists($_ci_path))
+		{
+			show_error('Unable to load the requested file: '.$_ci_file);
+		}
+
+		// This allows anything loaded using $this->load (views, files, etc.)
+		// to become accessible from within the Controller and Model functions.
+		$_ci_CI =& get_instance();
+		foreach (get_object_vars($_ci_CI) as $_ci_key => $_ci_var)
+		{
+			if ( ! isset($this->$_ci_key))
+			{
+				$this->$_ci_key =& $_ci_CI->$_ci_key;
+			}
+		}
+
+		/*
+		 * Extract and cache variables
+		 *
+		 * You can either set variables using the dedicated $this->load->vars()
+		 * function or via the second parameter of this function. We'll merge
+		 * the two types and cache them so that views that are embedded within
+		 * other views can have access to these variables.
+		 */
+		empty($_ci_vars) OR $this->_ci_cached_vars = array_merge($this->_ci_cached_vars, $_ci_vars);
+		extract($this->_ci_cached_vars);
+
+		/**
+		 * Buffer the output
+		 *
+		 * We buffer the output for two reasons:
+		 * 1. Speed. You get a significant speed boost.
+		 * 2. So that the final rendered template can be post-processed by
+		 *	the output class. Why do we need post processing? For one thing,
+		 *	in order to show the elapsed page load time. Unless we can
+		 *	intercept the content right before it's sent to the browser and
+		 *	then stop the timer it won't be accurate.
+		 */
+		ob_start();
+
+		include($_ci_path); // include() vs include_once() allows for multiple views with the same name
+		log_message('info', 'File loaded: '.$_ci_path);
+
+		// Return the file data if requested
+		if ($_ci_return === TRUE)
+		{
+			$buffer = ob_get_contents();
+			@ob_end_clean();
+			return $buffer;
+		}
+
+		/*
+		 * Flush the buffer... or buff the flusher?
+		 *
+		 * In order to permit views to be nested within
+		 * other views, we need to flush the content back out whenever
+		 * we are beyond the first level of output buffering so that
+		 * it can be seen and included properly by the first included
+		 * template and any subsequent ones. Oy!
+		 */
+		if (ob_get_level() > $this->_ci_ob_level + 1)
+		{
+			ob_end_flush();
+		}
+		else
+		{
+			$_ci_CI->output->append_output(ob_get_contents());
+			@ob_end_clean();
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal CI Library Loader
+	 *
+	 * @used-by	CI_Loader::library()
+	 * @uses	CI_Loader::_ci_init_library()
+	 *
+	 * @param	string	$class		Class name to load
+	 * @param	mixed	$params		Optional parameters to pass to the class constructor
+	 * @param	string	$object_name	Optional object name to assign to
+	 * @return	void
+	 */
+	protected function _ci_load_library($class, $params = NULL, $object_name = NULL)
+	{
+		// Get the class name, and while we're at it trim any slashes.
+		// The directory path can be included as part of the class name,
+		// but we don't want a leading slash
+		$class = str_replace('.php', '', trim($class, '/'));
+
+		// Was the path included with the class name?
+		// We look for a slash to determine this
+		if (($last_slash = strrpos($class, '/')) !== FALSE)
+		{
+			// Extract the path
+			$subdir = substr($class, 0, ++$last_slash);
+
+			// Get the filename from the path
+			$class = substr($class, $last_slash);
+		}
+		else
+		{
+			$subdir = '';
+		}
+
+		$class = ucfirst($class);
+
+		// Is this a stock library? There are a few special conditions if so ...
+		if (file_exists(BASEPATH.'libraries/'.$subdir.$class.'.php'))
+		{
+			return $this->_ci_load_stock_library($class, $subdir, $params, $object_name);
+		}
+
+		// Safety: Was the class already loaded by a previous call?
+		if (class_exists($class, FALSE))
+		{
+			$property = $object_name;
+			if (empty($property))
+			{
+				$property = strtolower($class);
+				isset($this->_ci_varmap[$property]) && $property = $this->_ci_varmap[$property];
+			}
+
+			$CI =& get_instance();
+			if (isset($CI->$property))
+			{
+				log_message('debug', $class.' class already loaded. Second attempt ignored.');
+				return;
+			}
+
+			return $this->_ci_init_library($class, '', $params, $object_name);
+		}
+
+		// Let's search for the requested library file and load it.
+		foreach ($this->_ci_library_paths as $path)
+		{
+			// BASEPATH has already been checked for
+			if ($path === BASEPATH)
+			{
+				continue;
+			}
+
+			$filepath = $path.'libraries/'.$subdir.$class.'.php';
+			// Does the file exist? No? Bummer...
+			if ( ! file_exists($filepath))
+			{
+				continue;
+			}
+
+			include_once($filepath);
+			return $this->_ci_init_library($class, '', $params, $object_name);
+		}
+
+		// One last attempt. Maybe the library is in a subdirectory, but it wasn't specified?
+		if ($subdir === '')
+		{
+			return $this->_ci_load_library($class.'/'.$class, $params, $object_name);
+		}
+
+		// If we got this far we were unable to find the requested class.
+		log_message('error', 'Unable to load the requested class: '.$class);
+		show_error('Unable to load the requested class: '.$class);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal CI Stock Library Loader
+	 *
+	 * @used-by	CI_Loader::_ci_load_library()
+	 * @uses	CI_Loader::_ci_init_library()
+	 *
+	 * @param	string	$library_name	Library name to load
+	 * @param	string	$file_path	Path to the library filename, relative to libraries/
+	 * @param	mixed	$params		Optional parameters to pass to the class constructor
+	 * @param	string	$object_name	Optional object name to assign to
+	 * @return	void
+	 */
+	protected function _ci_load_stock_library($library_name, $file_path, $params, $object_name)
+	{
+		$prefix = 'CI_';
+
+		if (class_exists($prefix.$library_name, FALSE))
+		{
+			if (class_exists(config_item('subclass_prefix').$library_name, FALSE))
+			{
+				$prefix = config_item('subclass_prefix');
+			}
+
+			$property = $object_name;
+			if (empty($property))
+			{
+				$property = strtolower($library_name);
+				isset($this->_ci_varmap[$property]) && $property = $this->_ci_varmap[$property];
+			}
+
+			$CI =& get_instance();
+			if ( ! isset($CI->$property))
+			{
+				return $this->_ci_init_library($library_name, $prefix, $params, $object_name);
+			}
+
+			log_message('debug', $library_name.' class already loaded. Second attempt ignored.');
+			return;
+		}
+
+		$paths = $this->_ci_library_paths;
+		array_pop($paths); // BASEPATH
+		array_pop($paths); // APPPATH (needs to be the first path checked)
+		array_unshift($paths, APPPATH);
+
+		foreach ($paths as $path)
+		{
+			if (file_exists($path = $path.'libraries/'.$file_path.$library_name.'.php'))
+			{
+				// Override
+				include_once($path);
+				if (class_exists($prefix.$library_name, FALSE))
+				{
+					return $this->_ci_init_library($library_name, $prefix, $params, $object_name);
+				}
+
+				log_message('debug', $path.' exists, but does not declare '.$prefix.$library_name);
+			}
+		}
+
+		include_once(BASEPATH.'libraries/'.$file_path.$library_name.'.php');
+
+		// Check for extensions
+		$subclass = config_item('subclass_prefix').$library_name;
+		foreach ($paths as $path)
+		{
+			if (file_exists($path = $path.'libraries/'.$file_path.$subclass.'.php'))
+			{
+				include_once($path);
+				if (class_exists($subclass, FALSE))
+				{
+					$prefix = config_item('subclass_prefix');
+					break;
+				}
+
+				log_message('debug', $path.' exists, but does not declare '.$subclass);
+			}
+		}
+
+		return $this->_ci_init_library($library_name, $prefix, $params, $object_name);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal CI Library Instantiator
+	 *
+	 * @used-by	CI_Loader::_ci_load_stock_library()
+	 * @used-by	CI_Loader::_ci_load_library()
+	 *
+	 * @param	string		$class		Class name
+	 * @param	string		$prefix		Class name prefix
+	 * @param	array|null|bool	$config		Optional configuration to pass to the class constructor:
+	 *						FALSE to skip;
+	 *						NULL to search in config paths;
+	 *						array containing configuration data
+	 * @param	string		$object_name	Optional object name to assign to
+	 * @return	void
+	 */
+	protected function _ci_init_library($class, $prefix, $config = FALSE, $object_name = NULL)
+	{
+		// Is there an associated config file for this class? Note: these should always be lowercase
+		if ($config === NULL)
+		{
+			// Fetch the config paths containing any package paths
+			$config_component = $this->_ci_get_component('config');
+
+			if (is_array($config_component->_config_paths))
+			{
+				$found = FALSE;
+				foreach ($config_component->_config_paths as $path)
+				{
+					// We test for both uppercase and lowercase, for servers that
+					// are case-sensitive with regard to file names. Load global first,
+					// override with environment next
+					if (file_exists($path.'config/'.strtolower($class).'.php'))
+					{
+						include($path.'config/'.strtolower($class).'.php');
+						$found = TRUE;
+					}
+					elseif (file_exists($path.'config/'.ucfirst(strtolower($class)).'.php'))
+					{
+						include($path.'config/'.ucfirst(strtolower($class)).'.php');
+						$found = TRUE;
+					}
+
+					if (file_exists($path.'config/'.ENVIRONMENT.'/'.strtolower($class).'.php'))
+					{
+						include($path.'config/'.ENVIRONMENT.'/'.strtolower($class).'.php');
+						$found = TRUE;
+					}
+					elseif (file_exists($path.'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php'))
+					{
+						include($path.'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php');
+						$found = TRUE;
+					}
+
+					// Break on the first found configuration, thus package
+					// files are not overridden by default paths
+					if ($found === TRUE)
+					{
+						break;
+					}
+				}
+			}
+		}
+
+		$class_name = $prefix.$class;
+
+		// Is the class name valid?
+		if ( ! class_exists($class_name, FALSE))
+		{
+			log_message('error', 'Non-existent class: '.$class_name);
+			show_error('Non-existent class: '.$class_name);
+		}
+
+		// Set the variable name we will assign the class to
+		// Was a custom class name supplied? If so we'll use it
+		if (empty($object_name))
+		{
+			$object_name = strtolower($class);
+			if (isset($this->_ci_varmap[$object_name]))
+			{
+				$object_name = $this->_ci_varmap[$object_name];
+			}
+		}
+
+		// Don't overwrite existing properties
+		$CI =& get_instance();
+		if (isset($CI->$object_name))
+		{
+			if ($CI->$object_name instanceof $class_name)
+			{
+				log_message('debug', $class_name." has already been instantiated as '".$object_name."'. Second attempt aborted.");
+				return;
+			}
+
+			show_error("Resource '".$object_name."' already exists and is not a ".$class_name." instance.");
+		}
+
+		// Save the class name and object name
+		$this->_ci_classes[$object_name] = $class;
+
+		// Instantiate the class
+		$CI->$object_name = isset($config)
+			? new $class_name($config)
+			: new $class_name();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CI Autoloader
+	 *
+	 * Loads component listed in the config/autoload.php file.
+	 *
+	 * @used-by	CI_Loader::initialize()
+	 * @return	void
+	 */
+	protected function _ci_autoloader()
+	{
+		if (file_exists(APPPATH.'config/autoload.php'))
+		{
+			include(APPPATH.'config/autoload.php');
+		}
+
+		if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/autoload.php'))
+		{
+			include(APPPATH.'config/'.ENVIRONMENT.'/autoload.php');
+		}
+
+		if ( ! isset($autoload))
+		{
+			return;
+		}
+
+		// Autoload packages
+		if (isset($autoload['packages']))
+		{
+			foreach ($autoload['packages'] as $package_path)
+			{
+				$this->add_package_path($package_path);
+			}
+		}
+
+		// Load any custom config file
+		if (count($autoload['config']) > 0)
+		{
+			foreach ($autoload['config'] as $val)
+			{
+				$this->config($val);
+			}
+		}
+
+		// Autoload helpers and languages
+		foreach (array('helper', 'language') as $type)
+		{
+			if (isset($autoload[$type]) && count($autoload[$type]) > 0)
+			{
+				$this->$type($autoload[$type]);
+			}
+		}
+
+		// Autoload drivers
+		if (isset($autoload['drivers']))
+		{
+			$this->driver($autoload['drivers']);
+		}
+
+		// Load libraries
+		if (isset($autoload['libraries']) && count($autoload['libraries']) > 0)
+		{
+			// Load the database driver.
+			if (in_array('database', $autoload['libraries']))
+			{
+				$this->database();
+				$autoload['libraries'] = array_diff($autoload['libraries'], array('database'));
+			}
+
+			// Load all other libraries
+			$this->library($autoload['libraries']);
+		}
+
+		// Autoload models
+		if (isset($autoload['model']))
+		{
+			$this->model($autoload['model']);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prepare variables for _ci_vars, to be later extract()-ed inside views
+	 *
+	 * Converts objects to associative arrays and filters-out internal
+	 * variable names (i.e. keys prefixed with '_ci_').
+	 *
+	 * @param	mixed	$vars
+	 * @return	array
+	 */
+	protected function _ci_prepare_view_vars($vars)
+	{
+		if ( ! is_array($vars))
+		{
+			$vars = is_object($vars)
+				? get_object_vars($vars)
+				: array();
+		}
+
+		foreach (array_keys($vars) as $key)
+		{
+			if (strncmp($key, '_ci_', 4) === 0)
+			{
+				unset($vars[$key]);
+			}
+		}
+
+		return $vars;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CI Component getter
+	 *
+	 * Get a reference to a specific library or model.
+	 *
+	 * @param 	string	$component	Component name
+	 * @return	bool
+	 */
+	protected function &_ci_get_component($component)
+	{
+		$CI =& get_instance();
+		return $CI->$component;
+	}
+}
diff --git a/system/core/Log.php b/system/core/Log.php
new file mode 100644
index 00000000..36634c15
--- /dev/null
+++ b/system/core/Log.php
@@ -0,0 +1,295 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Logging Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Logging
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/general/errors.html
+ */
+class CI_Log {
+
+	/**
+	 * Path to save log files
+	 *
+	 * @var string
+	 */
+	protected $_log_path;
+
+	/**
+	 * File permissions
+	 *
+	 * @var	int
+	 */
+	protected $_file_permissions = 0644;
+
+	/**
+	 * Level of logging
+	 *
+	 * @var int
+	 */
+	protected $_threshold = 1;
+
+	/**
+	 * Array of threshold levels to log
+	 *
+	 * @var array
+	 */
+	protected $_threshold_array = array();
+
+	/**
+	 * Format of timestamp for log files
+	 *
+	 * @var string
+	 */
+	protected $_date_fmt = 'Y-m-d H:i:s';
+
+	/**
+	 * Filename extension
+	 *
+	 * @var	string
+	 */
+	protected $_file_ext;
+
+	/**
+	 * Whether or not the logger can write to the log files
+	 *
+	 * @var bool
+	 */
+	protected $_enabled = TRUE;
+
+	/**
+	 * Predefined logging levels
+	 *
+	 * @var array
+	 */
+	protected $_levels = array('ERROR' => 1, 'DEBUG' => 2, 'INFO' => 3, 'ALL' => 4);
+
+	/**
+	 * mbstring.func_overload flag
+	 *
+	 * @var	bool
+	 */
+	protected static $func_overload;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$config =& get_config();
+
+		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+
+		$this->_log_path = ($config['log_path'] !== '')
+			? rtrim($config['log_path'], '/\\').DIRECTORY_SEPARATOR : APPPATH.'logs'.DIRECTORY_SEPARATOR;
+
+		$this->_file_ext = (isset($config['log_file_extension']) && $config['log_file_extension'] !== '')
+			? ltrim($config['log_file_extension'], '.') : 'php';
+
+		file_exists($this->_log_path) OR mkdir($this->_log_path, 0755, TRUE);
+
+		if ( ! is_dir($this->_log_path) OR ! is_really_writable($this->_log_path))
+		{
+			$this->_enabled = FALSE;
+		}
+
+		if (is_numeric($config['log_threshold']))
+		{
+			$this->_threshold = (int) $config['log_threshold'];
+		}
+		elseif (is_array($config['log_threshold']))
+		{
+			$this->_threshold = 0;
+			$this->_threshold_array = array_flip($config['log_threshold']);
+		}
+
+		if ( ! empty($config['log_date_format']))
+		{
+			$this->_date_fmt = $config['log_date_format'];
+		}
+
+		if ( ! empty($config['log_file_permissions']) && is_int($config['log_file_permissions']))
+		{
+			$this->_file_permissions = $config['log_file_permissions'];
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Write Log File
+	 *
+	 * Generally this function will be called using the global log_message() function
+	 *
+	 * @param	string	$level 	The error level: 'error', 'debug' or 'info'
+	 * @param	string	$msg 	The error message
+	 * @return	bool
+	 */
+	public function write_log($level, $msg)
+	{
+		if ($this->_enabled === FALSE)
+		{
+			return FALSE;
+		}
+
+		$level = strtoupper($level);
+
+		if (( ! isset($this->_levels[$level]) OR ($this->_levels[$level] > $this->_threshold))
+			&& ! isset($this->_threshold_array[$this->_levels[$level]]))
+		{
+			return FALSE;
+		}
+
+		$filepath = $this->_log_path.'log-'.date('Y-m-d').'.'.$this->_file_ext;
+		$message = '';
+
+		if ( ! file_exists($filepath))
+		{
+			$newfile = TRUE;
+			// Only add protection to php files
+			if ($this->_file_ext === 'php')
+			{
+				$message .= "<?php defined('BASEPATH') OR exit('No direct script access allowed'); ?>\n\n";
+			}
+		}
+
+		if ( ! $fp = @fopen($filepath, 'ab'))
+		{
+			return FALSE;
+		}
+
+		flock($fp, LOCK_EX);
+
+		// Instantiating DateTime with microseconds appended to initial date is needed for proper support of this format
+		if (strpos($this->_date_fmt, 'u') !== FALSE)
+		{
+			$microtime_full = microtime(TRUE);
+			$microtime_short = sprintf("%06d", ($microtime_full - floor($microtime_full)) * 1000000);
+			$date = new DateTime(date('Y-m-d H:i:s.'.$microtime_short, $microtime_full));
+			$date = $date->format($this->_date_fmt);
+		}
+		else
+		{
+			$date = date($this->_date_fmt);
+		}
+
+		$message .= $this->_format_line($level, $date, $msg);
+
+		for ($written = 0, $length = self::strlen($message); $written < $length; $written += $result)
+		{
+			if (($result = fwrite($fp, self::substr($message, $written))) === FALSE)
+			{
+				break;
+			}
+		}
+
+		flock($fp, LOCK_UN);
+		fclose($fp);
+
+		if (isset($newfile) && $newfile === TRUE)
+		{
+			chmod($filepath, $this->_file_permissions);
+		}
+
+		return is_int($result);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Format the log line.
+	 *
+	 * This is for extensibility of log formatting
+	 * If you want to change the log format, extend the CI_Log class and override this method
+	 *
+	 * @param	string	$level 	The error level
+	 * @param	string	$date 	Formatted date string
+	 * @param	string	$message 	The log message
+	 * @return	string	Formatted log line with a new line character at the end
+	 */
+	protected function _format_line($level, $date, $message)
+	{
+		return $level.' - '.$date.' --> '.$message.PHP_EOL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return (self::$func_overload)
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe substr()
+	 *
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int	$length
+	 * @return	string
+	 */
+	protected static function substr($str, $start, $length = NULL)
+	{
+		if (self::$func_overload)
+		{
+			return mb_substr($str, $start, $length, '8bit');
+		}
+
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/core/Model.php b/system/core/Model.php
new file mode 100644
index 00000000..58514829
--- /dev/null
+++ b/system/core/Model.php
@@ -0,0 +1,68 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Model Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/config.html
+ */
+class CI_Model {
+
+	/**
+	 * __get magic
+	 *
+	 * Allows models to access CI's loaded classes using the same
+	 * syntax as controllers.
+	 *
+	 * @param	string	$key
+	 */
+	public function __get($key)
+	{
+		// Debugging note:
+		//	If you're here because you're getting an error message
+		//	saying 'Undefined Property: system/core/Model.php', it's
+		//	most likely a typo in your model code.
+		return get_instance()->$key;
+	}
+
+}
diff --git a/system/core/Output.php b/system/core/Output.php
new file mode 100644
index 00000000..c56aff4b
--- /dev/null
+++ b/system/core/Output.php
@@ -0,0 +1,839 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Output Class
+ *
+ * Responsible for sending final output to the browser.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Output
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/output.html
+ */
+class CI_Output {
+
+	/**
+	 * Final output string
+	 *
+	 * @var	string
+	 */
+	public $final_output;
+
+	/**
+	 * Cache expiration time
+	 *
+	 * @var	int
+	 */
+	public $cache_expiration = 0;
+
+	/**
+	 * List of server headers
+	 *
+	 * @var	array
+	 */
+	public $headers = array();
+
+	/**
+	 * List of mime types
+	 *
+	 * @var	array
+	 */
+	public $mimes =	array();
+
+	/**
+	 * Mime-type for the current page
+	 *
+	 * @var	string
+	 */
+	protected $mime_type = 'text/html';
+
+	/**
+	 * Enable Profiler flag
+	 *
+	 * @var	bool
+	 */
+	public $enable_profiler = FALSE;
+
+	/**
+	 * php.ini zlib.output_compression flag
+	 *
+	 * @var	bool
+	 */
+	protected $_zlib_oc = FALSE;
+
+	/**
+	 * CI output compression flag
+	 *
+	 * @var	bool
+	 */
+	protected $_compress_output = FALSE;
+
+	/**
+	 * List of profiler sections
+	 *
+	 * @var	array
+	 */
+	protected $_profiler_sections =	array();
+
+	/**
+	 * Parse markers flag
+	 *
+	 * Whether or not to parse variables like {elapsed_time} and {memory_usage}.
+	 *
+	 * @var	bool
+	 */
+	public $parse_exec_vars = TRUE;
+
+	/**
+	 * mbstring.func_overload flag
+	 *
+	 * @var	bool
+	 */
+	protected static $func_overload;
+
+	/**
+	 * Class constructor
+	 *
+	 * Determines whether zLib output compression will be used.
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$this->_zlib_oc = (bool) ini_get('zlib.output_compression');
+		$this->_compress_output = (
+			$this->_zlib_oc === FALSE
+			&& config_item('compress_output') === TRUE
+			&& extension_loaded('zlib')
+		);
+
+		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+
+		// Get mime types for later
+		$this->mimes =& get_mimes();
+
+		log_message('info', 'Output Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Output
+	 *
+	 * Returns the current output string.
+	 *
+	 * @return	string
+	 */
+	public function get_output()
+	{
+		return $this->final_output;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Output
+	 *
+	 * Sets the output string.
+	 *
+	 * @param	string	$output	Output data
+	 * @return	CI_Output
+	 */
+	public function set_output($output)
+	{
+		$this->final_output = $output;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Append Output
+	 *
+	 * Appends data onto the output string.
+	 *
+	 * @param	string	$output	Data to append
+	 * @return	CI_Output
+	 */
+	public function append_output($output)
+	{
+		$this->final_output .= $output;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Header
+	 *
+	 * Lets you set a server header which will be sent with the final output.
+	 *
+	 * Note: If a file is cached, headers will not be sent.
+	 * @todo	We need to figure out how to permit headers to be cached.
+	 *
+	 * @param	string	$header		Header
+	 * @param	bool	$replace	Whether to replace the old header value, if already set
+	 * @return	CI_Output
+	 */
+	public function set_header($header, $replace = TRUE)
+	{
+		// If zlib.output_compression is enabled it will compress the output,
+		// but it will not modify the content-length header to compensate for
+		// the reduction, causing the browser to hang waiting for more data.
+		// We'll just skip content-length in those cases.
+		if ($this->_zlib_oc && strncasecmp($header, 'content-length', 14) === 0)
+		{
+			return $this;
+		}
+
+		$this->headers[] = array($header, $replace);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Content-Type Header
+	 *
+	 * @param	string	$mime_type	Extension of the file we're outputting
+	 * @param	string	$charset	Character set (default: NULL)
+	 * @return	CI_Output
+	 */
+	public function set_content_type($mime_type, $charset = NULL)
+	{
+		if (strpos($mime_type, '/') === FALSE)
+		{
+			$extension = ltrim($mime_type, '.');
+
+			// Is this extension supported?
+			if (isset($this->mimes[$extension]))
+			{
+				$mime_type =& $this->mimes[$extension];
+
+				if (is_array($mime_type))
+				{
+					$mime_type = current($mime_type);
+				}
+			}
+		}
+
+		$this->mime_type = $mime_type;
+
+		if (empty($charset))
+		{
+			$charset = config_item('charset');
+		}
+
+		$header = 'Content-Type: '.$mime_type
+			.(empty($charset) ? '' : '; charset='.$charset);
+
+		$this->headers[] = array($header, TRUE);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Current Content-Type Header
+	 *
+	 * @return	string	'text/html', if not already set
+	 */
+	public function get_content_type()
+	{
+		for ($i = 0, $c = count($this->headers); $i < $c; $i++)
+		{
+			if (sscanf($this->headers[$i][0], 'Content-Type: %[^;]', $content_type) === 1)
+			{
+				return $content_type;
+			}
+		}
+
+		return 'text/html';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Header
+	 *
+	 * @param	string	$header
+	 * @return	string
+	 */
+	public function get_header($header)
+	{
+		// Combine headers already sent with our batched headers
+		$headers = array_merge(
+			// We only need [x][0] from our multi-dimensional array
+			array_map('array_shift', $this->headers),
+			headers_list()
+		);
+
+		if (empty($headers) OR empty($header))
+		{
+			return NULL;
+		}
+
+		// Count backwards, in order to get the last matching header
+		for ($c = count($headers) - 1; $c > -1; $c--)
+		{
+			if (strncasecmp($header, $headers[$c], $l = self::strlen($header)) === 0)
+			{
+				return trim(self::substr($headers[$c], $l+1));
+			}
+		}
+
+		return NULL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set HTTP Status Header
+	 *
+	 * As of version 1.7.2, this is an alias for common function
+	 * set_status_header().
+	 *
+	 * @param	int	$code	Status code (default: 200)
+	 * @param	string	$text	Optional message
+	 * @return	CI_Output
+	 */
+	public function set_status_header($code = 200, $text = '')
+	{
+		set_status_header($code, $text);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Enable/disable Profiler
+	 *
+	 * @param	bool	$val	TRUE to enable or FALSE to disable
+	 * @return	CI_Output
+	 */
+	public function enable_profiler($val = TRUE)
+	{
+		$this->enable_profiler = is_bool($val) ? $val : TRUE;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Profiler Sections
+	 *
+	 * Allows override of default/config settings for
+	 * Profiler section display.
+	 *
+	 * @param	array	$sections	Profiler sections
+	 * @return	CI_Output
+	 */
+	public function set_profiler_sections($sections)
+	{
+		if (isset($sections['query_toggle_count']))
+		{
+			$this->_profiler_sections['query_toggle_count'] = (int) $sections['query_toggle_count'];
+			unset($sections['query_toggle_count']);
+		}
+
+		foreach ($sections as $section => $enable)
+		{
+			$this->_profiler_sections[$section] = ($enable !== FALSE);
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Cache
+	 *
+	 * @param	int	$time	Cache expiration time in minutes
+	 * @return	CI_Output
+	 */
+	public function cache($time)
+	{
+		$this->cache_expiration = is_numeric($time) ? $time : 0;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Display Output
+	 *
+	 * Processes and sends finalized output data to the browser along
+	 * with any server headers and profile data. It also stops benchmark
+	 * timers so the page rendering speed and memory usage can be shown.
+	 *
+	 * Note: All "view" data is automatically put into $this->final_output
+	 *	 by controller class.
+	 *
+	 * @uses	CI_Output::$final_output
+	 * @param	string	$output	Output data override
+	 * @return	void
+	 */
+	public function _display($output = NULL)
+	{
+		// Note:  We use load_class() because we can't use $CI =& get_instance()
+		// since this function is sometimes called by the caching mechanism,
+		// which happens before the CI super object is available.
+		$BM =& load_class('Benchmark', 'core');
+		$CFG =& load_class('Config', 'core');
+
+		// Grab the super object if we can.
+		if (class_exists('CI_Controller', FALSE))
+		{
+			$CI =& get_instance();
+		}
+
+		// --------------------------------------------------------------------
+
+		// Set the output data
+		if ($output === NULL)
+		{
+			$output =& $this->final_output;
+		}
+
+		// --------------------------------------------------------------------
+
+		// Do we need to write a cache file? Only if the controller does not have its
+		// own _output() method and we are not dealing with a cache file, which we
+		// can determine by the existence of the $CI object above
+		if ($this->cache_expiration > 0 && isset($CI) && ! method_exists($CI, '_output'))
+		{
+			$this->_write_cache($output);
+		}
+
+		// --------------------------------------------------------------------
+
+		// Parse out the elapsed time and memory usage,
+		// then swap the pseudo-variables with the data
+
+		$elapsed = $BM->elapsed_time('total_execution_time_start', 'total_execution_time_end');
+
+		if ($this->parse_exec_vars === TRUE)
+		{
+			$memory	= round(memory_get_usage() / 1024 / 1024, 2).'MB';
+			$output = str_replace(array('{elapsed_time}', '{memory_usage}'), array($elapsed, $memory), $output);
+		}
+
+		// --------------------------------------------------------------------
+
+		// Is compression requested?
+		if (isset($CI) // This means that we're not serving a cache file, if we were, it would already be compressed
+			&& $this->_compress_output === TRUE
+			&& isset($_SERVER['HTTP_ACCEPT_ENCODING']) && strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== FALSE)
+		{
+			ob_start('ob_gzhandler');
+		}
+
+		// --------------------------------------------------------------------
+
+		// Are there any server headers to send?
+		if (count($this->headers) > 0)
+		{
+			foreach ($this->headers as $header)
+			{
+				@header($header[0], $header[1]);
+			}
+		}
+
+		// --------------------------------------------------------------------
+
+		// Does the $CI object exist?
+		// If not we know we are dealing with a cache file so we'll
+		// simply echo out the data and exit.
+		if ( ! isset($CI))
+		{
+			if ($this->_compress_output === TRUE)
+			{
+				if (isset($_SERVER['HTTP_ACCEPT_ENCODING']) && strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== FALSE)
+				{
+					header('Content-Encoding: gzip');
+					header('Content-Length: '.self::strlen($output));
+				}
+				else
+				{
+					// User agent doesn't support gzip compression,
+					// so we'll have to decompress our cache
+					$output = gzinflate(self::substr($output, 10, -8));
+				}
+			}
+
+			echo $output;
+			log_message('info', 'Final output sent to browser');
+			log_message('info', 'Total execution time: '.$elapsed);
+			return;
+		}
+
+		// --------------------------------------------------------------------
+
+		// Do we need to generate profile data?
+		// If so, load the Profile class and run it.
+		if ($this->enable_profiler === TRUE)
+		{
+			$CI->load->library('profiler');
+			if ( ! empty($this->_profiler_sections))
+			{
+				$CI->profiler->set_sections($this->_profiler_sections);
+			}
+
+			// If the output data contains closing </body> and </html> tags
+			// we will remove them and add them back after we insert the profile data
+			$output = preg_replace('|</body>.*?</html>|is', '', $output, -1, $count).$CI->profiler->run();
+			if ($count > 0)
+			{
+				$output .= '</body></html>';
+			}
+		}
+
+		// Does the controller contain a function named _output()?
+		// If so send the output there.  Otherwise, echo it.
+		if (method_exists($CI, '_output'))
+		{
+			$CI->_output($output);
+		}
+		else
+		{
+			echo $output; // Send it to the browser!
+		}
+
+		log_message('info', 'Final output sent to browser');
+		log_message('info', 'Total execution time: '.$elapsed);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Write Cache
+	 *
+	 * @param	string	$output	Output data to cache
+	 * @return	void
+	 */
+	public function _write_cache($output)
+	{
+		$CI =& get_instance();
+		$path = $CI->config->item('cache_path');
+		$cache_path = ($path === '') ? APPPATH.'cache'.DIRECTORY_SEPARATOR : rtrim($path, '/\\').DIRECTORY_SEPARATOR;
+
+		if ( ! is_dir($cache_path) OR ! is_really_writable($cache_path))
+		{
+			log_message('error', 'Unable to write cache file: '.$cache_path);
+			return;
+		}
+
+		$uri = $CI->config->item('base_url')
+			.$CI->config->slash_item('index_page')
+			.$CI->uri->uri_string();
+
+		if (($cache_query_string = $CI->config->item('cache_query_string')) && ! empty($_SERVER['QUERY_STRING']))
+		{
+			if (is_array($cache_query_string))
+			{
+				$uri .= '?'.http_build_query(array_intersect_key($_GET, array_flip($cache_query_string)));
+			}
+			else
+			{
+				$uri .= '?'.$_SERVER['QUERY_STRING'];
+			}
+		}
+
+		$cache_path .= md5($uri);
+
+		if ( ! $fp = @fopen($cache_path, 'w+b'))
+		{
+			log_message('error', 'Unable to write cache file: '.$cache_path);
+			return;
+		}
+
+		if ( ! flock($fp, LOCK_EX))
+		{
+			log_message('error', 'Unable to secure a file lock for file at: '.$cache_path);
+			fclose($fp);
+			return;
+		}
+
+		// If output compression is enabled, compress the cache
+		// itself, so that we don't have to do that each time
+		// we're serving it
+		if ($this->_compress_output === TRUE)
+		{
+			$output = gzencode($output);
+
+			if ($this->get_header('content-type') === NULL)
+			{
+				$this->set_content_type($this->mime_type);
+			}
+		}
+
+		$expire = time() + ($this->cache_expiration * 60);
+
+		// Put together our serialized info.
+		$cache_info = serialize(array(
+			'expire'	=> $expire,
+			'headers'	=> $this->headers
+		));
+
+		$output = $cache_info.'ENDCI--->'.$output;
+
+		for ($written = 0, $length = self::strlen($output); $written < $length; $written += $result)
+		{
+			if (($result = fwrite($fp, self::substr($output, $written))) === FALSE)
+			{
+				break;
+			}
+		}
+
+		flock($fp, LOCK_UN);
+		fclose($fp);
+
+		if ( ! is_int($result))
+		{
+			@unlink($cache_path);
+			log_message('error', 'Unable to write the complete cache content at: '.$cache_path);
+			return;
+		}
+
+		chmod($cache_path, 0640);
+		log_message('debug', 'Cache file written: '.$cache_path);
+
+		// Send HTTP cache-control headers to browser to match file cache settings.
+		$this->set_cache_header($_SERVER['REQUEST_TIME'], $expire);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update/serve cached output
+	 *
+	 * @uses	CI_Config
+	 * @uses	CI_URI
+	 *
+	 * @param	object	&$CFG	CI_Config class instance
+	 * @param	object	&$URI	CI_URI class instance
+	 * @return	bool	TRUE on success or FALSE on failure
+	 */
+	public function _display_cache(&$CFG, &$URI)
+	{
+		$cache_path = ($CFG->item('cache_path') === '') ? APPPATH.'cache/' : $CFG->item('cache_path');
+
+		// Build the file path. The file name is an MD5 hash of the full URI
+		$uri = $CFG->item('base_url').$CFG->slash_item('index_page').$URI->uri_string;
+
+		if (($cache_query_string = $CFG->item('cache_query_string')) && ! empty($_SERVER['QUERY_STRING']))
+		{
+			if (is_array($cache_query_string))
+			{
+				$uri .= '?'.http_build_query(array_intersect_key($_GET, array_flip($cache_query_string)));
+			}
+			else
+			{
+				$uri .= '?'.$_SERVER['QUERY_STRING'];
+			}
+		}
+
+		$filepath = $cache_path.md5($uri);
+
+		if ( ! file_exists($filepath) OR ! $fp = @fopen($filepath, 'rb'))
+		{
+			return FALSE;
+		}
+
+		flock($fp, LOCK_SH);
+
+		$cache = (filesize($filepath) > 0) ? fread($fp, filesize($filepath)) : '';
+
+		flock($fp, LOCK_UN);
+		fclose($fp);
+
+		// Look for embedded serialized file info.
+		if ( ! preg_match('/^(.*)ENDCI--->/', $cache, $match))
+		{
+			return FALSE;
+		}
+
+		$cache_info = unserialize($match[1]);
+		$expire = $cache_info['expire'];
+
+		$last_modified = filemtime($filepath);
+
+		// Has the file expired?
+		if ($_SERVER['REQUEST_TIME'] >= $expire && is_really_writable($cache_path))
+		{
+			// If so we'll delete it.
+			@unlink($filepath);
+			log_message('debug', 'Cache file has expired. File deleted.');
+			return FALSE;
+		}
+
+		// Send the HTTP cache control headers
+		$this->set_cache_header($last_modified, $expire);
+
+		// Add headers from cache file.
+		foreach ($cache_info['headers'] as $header)
+		{
+			$this->set_header($header[0], $header[1]);
+		}
+
+		// Display the cache
+		$this->_display(self::substr($cache, self::strlen($match[0])));
+		log_message('debug', 'Cache file is current. Sending it to browser.');
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete cache
+	 *
+	 * @param	string	$uri	URI string
+	 * @return	bool
+	 */
+	public function delete_cache($uri = '')
+	{
+		$CI =& get_instance();
+		$cache_path = $CI->config->item('cache_path');
+		if ($cache_path === '')
+		{
+			$cache_path = APPPATH.'cache/';
+		}
+
+		if ( ! is_dir($cache_path))
+		{
+			log_message('error', 'Unable to find cache path: '.$cache_path);
+			return FALSE;
+		}
+
+		if (empty($uri))
+		{
+			$uri = $CI->uri->uri_string();
+
+			if (($cache_query_string = $CI->config->item('cache_query_string')) && ! empty($_SERVER['QUERY_STRING']))
+			{
+				if (is_array($cache_query_string))
+				{
+					$uri .= '?'.http_build_query(array_intersect_key($_GET, array_flip($cache_query_string)));
+				}
+				else
+				{
+					$uri .= '?'.$_SERVER['QUERY_STRING'];
+				}
+			}
+		}
+
+		$cache_path .= md5($CI->config->item('base_url').$CI->config->slash_item('index_page').ltrim($uri, '/'));
+
+		if ( ! @unlink($cache_path))
+		{
+			log_message('error', 'Unable to delete cache file for '.$uri);
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Cache Header
+	 *
+	 * Set the HTTP headers to match the server-side file cache settings
+	 * in order to reduce bandwidth.
+	 *
+	 * @param	int	$last_modified	Timestamp of when the page was last modified
+	 * @param	int	$expiration	Timestamp of when should the requested page expire from cache
+	 * @return	void
+	 */
+	public function set_cache_header($last_modified, $expiration)
+	{
+		$max_age = $expiration - $_SERVER['REQUEST_TIME'];
+
+		if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && $last_modified <= strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']))
+		{
+			$this->set_status_header(304);
+			exit;
+		}
+
+		header('Pragma: public');
+		header('Cache-Control: max-age='.$max_age.', public');
+		header('Expires: '.gmdate('D, d M Y H:i:s', $expiration).' GMT');
+		header('Last-modified: '.gmdate('D, d M Y H:i:s', $last_modified).' GMT');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return (self::$func_overload)
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe substr()
+	 *
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int	$length
+	 * @return	string
+	 */
+	protected static function substr($str, $start, $length = NULL)
+	{
+		if (self::$func_overload)
+		{
+			return mb_substr($str, $start, $length, '8bit');
+		}
+
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/core/Router.php b/system/core/Router.php
new file mode 100644
index 00000000..0d966255
--- /dev/null
+++ b/system/core/Router.php
@@ -0,0 +1,472 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Router Class
+ *
+ * Parses URIs and determines routing
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/general/routing.html
+ */
+class CI_Router {
+
+	/**
+	 * CI_Config class object
+	 *
+	 * @var	object
+	 */
+	public $config;
+
+	/**
+	 * List of routes
+	 *
+	 * @var	array
+	 */
+	public $routes =	array();
+
+	/**
+	 * Current class name
+	 *
+	 * @var	string
+	 */
+	public $class =		'';
+
+	/**
+	 * Current method name
+	 *
+	 * @var	string
+	 */
+	public $method =	'index';
+
+	/**
+	 * Sub-directory that contains the requested controller class
+	 *
+	 * @var	string
+	 */
+	public $directory;
+
+	/**
+	 * Default controller (and method if specific)
+	 *
+	 * @var	string
+	 */
+	public $default_controller;
+
+	/**
+	 * Translate URI dashes
+	 *
+	 * Determines whether dashes in controller & method segments
+	 * should be automatically replaced by underscores.
+	 *
+	 * @var	bool
+	 */
+	public $translate_uri_dashes = FALSE;
+
+	/**
+	 * Enable query strings flag
+	 *
+	 * Determines whether to use GET parameters or segment URIs
+	 *
+	 * @var	bool
+	 */
+	public $enable_query_strings = FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Runs the route mapping function.
+	 *
+	 * @param	array	$routing
+	 * @return	void
+	 */
+	public function __construct($routing = NULL)
+	{
+		$this->config =& load_class('Config', 'core');
+		$this->uri =& load_class('URI', 'core');
+
+		$this->enable_query_strings = ( ! is_cli() && $this->config->item('enable_query_strings') === TRUE);
+
+		// If a directory override is configured, it has to be set before any dynamic routing logic
+		is_array($routing) && isset($routing['directory']) && $this->set_directory($routing['directory']);
+		$this->_set_routing();
+
+		// Set any routing overrides that may exist in the main index file
+		if (is_array($routing))
+		{
+			empty($routing['controller']) OR $this->set_class($routing['controller']);
+			empty($routing['function'])   OR $this->set_method($routing['function']);
+		}
+
+		log_message('info', 'Router Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set route mapping
+	 *
+	 * Determines what should be served based on the URI request,
+	 * as well as any "routes" that have been set in the routing config file.
+	 *
+	 * @return	void
+	 */
+	protected function _set_routing()
+	{
+		// Load the routes.php file. It would be great if we could
+		// skip this for enable_query_strings = TRUE, but then
+		// default_controller would be empty ...
+		if (file_exists(APPPATH.'config/routes.php'))
+		{
+			include(APPPATH.'config/routes.php');
+		}
+
+		if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/routes.php'))
+		{
+			include(APPPATH.'config/'.ENVIRONMENT.'/routes.php');
+		}
+
+		// Validate & get reserved routes
+		if (isset($route) && is_array($route))
+		{
+			isset($route['default_controller']) && $this->default_controller = $route['default_controller'];
+			isset($route['translate_uri_dashes']) && $this->translate_uri_dashes = $route['translate_uri_dashes'];
+			unset($route['default_controller'], $route['translate_uri_dashes']);
+			$this->routes = $route;
+		}
+
+		// Are query strings enabled in the config file? Normally CI doesn't utilize query strings
+		// since URI segments are more search-engine friendly, but they can optionally be used.
+		// If this feature is enabled, we will gather the directory/class/method a little differently
+		if ($this->enable_query_strings)
+		{
+			// If the directory is set at this time, it means an override exists, so skip the checks
+			if ( ! isset($this->directory))
+			{
+				$_d = $this->config->item('directory_trigger');
+				$_d = isset($_GET[$_d]) ? trim($_GET[$_d], " \t\n\r\0\x0B/") : '';
+
+				if ($_d !== '')
+				{
+					$this->uri->filter_uri($_d);
+					$this->set_directory($_d);
+				}
+			}
+
+			$_c = trim($this->config->item('controller_trigger'));
+			if ( ! empty($_GET[$_c]))
+			{
+				$this->uri->filter_uri($_GET[$_c]);
+				$this->set_class($_GET[$_c]);
+
+				$_f = trim($this->config->item('function_trigger'));
+				if ( ! empty($_GET[$_f]))
+				{
+					$this->uri->filter_uri($_GET[$_f]);
+					$this->set_method($_GET[$_f]);
+				}
+
+				$this->uri->rsegments = array(
+					1 => $this->class,
+					2 => $this->method
+				);
+			}
+			else
+			{
+				$this->_set_default_controller();
+			}
+
+			// Routing rules don't apply to query strings and we don't need to detect
+			// directories, so we're done here
+			return;
+		}
+
+		// Is there anything to parse?
+		if ($this->uri->uri_string !== '')
+		{
+			$this->_parse_routes();
+		}
+		else
+		{
+			$this->_set_default_controller();
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set request route
+	 *
+	 * Takes an array of URI segments as input and sets the class/method
+	 * to be called.
+	 *
+	 * @used-by	CI_Router::_parse_routes()
+	 * @param	array	$segments	URI segments
+	 * @return	void
+	 */
+	protected function _set_request($segments = array())
+	{
+		$segments = $this->_validate_request($segments);
+		// If we don't have any segments left - try the default controller;
+		// WARNING: Directories get shifted out of the segments array!
+		if (empty($segments))
+		{
+			$this->_set_default_controller();
+			return;
+		}
+
+		if ($this->translate_uri_dashes === TRUE)
+		{
+			$segments[0] = str_replace('-', '_', $segments[0]);
+			if (isset($segments[1]))
+			{
+				$segments[1] = str_replace('-', '_', $segments[1]);
+			}
+		}
+
+		$this->set_class($segments[0]);
+		if (isset($segments[1]))
+		{
+			$this->set_method($segments[1]);
+		}
+		else
+		{
+			$segments[1] = 'index';
+		}
+
+		array_unshift($segments, NULL);
+		unset($segments[0]);
+		$this->uri->rsegments = $segments;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set default controller
+	 *
+	 * @return	void
+	 */
+	protected function _set_default_controller()
+	{
+		if (empty($this->default_controller))
+		{
+			show_error('Unable to determine what should be displayed. A default route has not been specified in the routing file.');
+		}
+
+		// Is the method being specified?
+		if (sscanf($this->default_controller, '%[^/]/%s', $class, $method) !== 2)
+		{
+			$method = 'index';
+		}
+
+		if ( ! file_exists(APPPATH.'controllers/'.$this->directory.ucfirst($class).'.php'))
+		{
+			// This will trigger 404 later
+			return;
+		}
+
+		$this->set_class($class);
+		$this->set_method($method);
+
+		// Assign routed segments, index starting from 1
+		$this->uri->rsegments = array(
+			1 => $class,
+			2 => $method
+		);
+
+		log_message('debug', 'No URI present. Default controller set.');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate request
+	 *
+	 * Attempts validate the URI request and determine the controller path.
+	 *
+	 * @used-by	CI_Router::_set_request()
+	 * @param	array	$segments	URI segments
+	 * @return	mixed	URI segments
+	 */
+	protected function _validate_request($segments)
+	{
+		$c = count($segments);
+		$directory_override = isset($this->directory);
+
+		// Loop through our segments and return as soon as a controller
+		// is found or when such a directory doesn't exist
+		while ($c-- > 0)
+		{
+			$test = $this->directory
+				.ucfirst($this->translate_uri_dashes === TRUE ? str_replace('-', '_', $segments[0]) : $segments[0]);
+
+			if ( ! file_exists(APPPATH.'controllers/'.$test.'.php')
+				&& $directory_override === FALSE
+				&& is_dir(APPPATH.'controllers/'.$this->directory.$segments[0])
+			)
+			{
+				$this->set_directory(array_shift($segments), TRUE);
+				continue;
+			}
+
+			return $segments;
+		}
+
+		// This means that all segments were actually directories
+		return $segments;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse Routes
+	 *
+	 * Matches any routes that may exist in the config/routes.php file
+	 * against the URI to determine if the class/method need to be remapped.
+	 *
+	 * @return	void
+	 */
+	protected function _parse_routes()
+	{
+		// Turn the segment array into a URI string
+		$uri = implode('/', $this->uri->segments);
+
+		// Get HTTP verb
+		$http_verb = isset($_SERVER['REQUEST_METHOD']) ? strtolower($_SERVER['REQUEST_METHOD']) : 'cli';
+
+		// Loop through the route array looking for wildcards
+		foreach ($this->routes as $key => $val)
+		{
+			// Check if route format is using HTTP verbs
+			if (is_array($val))
+			{
+				$val = array_change_key_case($val, CASE_LOWER);
+				if (isset($val[$http_verb]))
+				{
+					$val = $val[$http_verb];
+				}
+				else
+				{
+					continue;
+				}
+			}
+
+			// Convert wildcards to RegEx
+			$key = str_replace(array(':any', ':num'), array('[^/]+', '[0-9]+'), $key);
+
+			// Does the RegEx match?
+			if (preg_match('#^'.$key.'$#', $uri, $matches))
+			{
+				// Are we using callbacks to process back-references?
+				if ( ! is_string($val) && is_callable($val))
+				{
+					// Remove the original string from the matches array.
+					array_shift($matches);
+
+					// Execute the callback using the values in matches as its parameters.
+					$val = call_user_func_array($val, $matches);
+				}
+				// Are we using the default routing method for back-references?
+				elseif (strpos($val, '$') !== FALSE && strpos($key, '(') !== FALSE)
+				{
+					$val = preg_replace('#^'.$key.'$#', $val, $uri);
+				}
+
+				$this->_set_request(explode('/', $val));
+				return;
+			}
+		}
+
+		// If we got this far it means we didn't encounter a
+		// matching route so we'll set the site default route
+		$this->_set_request(array_values($this->uri->segments));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set class name
+	 *
+	 * @param	string	$class	Class name
+	 * @return	void
+	 */
+	public function set_class($class)
+	{
+		$this->class = str_replace(array('/', '.'), '', $class);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set method name
+	 *
+	 * @param	string	$method	Method name
+	 * @return	void
+	 */
+	public function set_method($method)
+	{
+		$this->method = $method;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set directory name
+	 *
+	 * @param	string	$dir	Directory name
+	 * @param	bool	$append	Whether we're appending rather than setting the full value
+	 * @return	void
+	 */
+	public function set_directory($dir, $append = FALSE)
+	{
+		if ($append !== TRUE OR empty($this->directory))
+		{
+			$this->directory = str_replace('.', '', trim($dir, '/')).'/';
+		}
+		else
+		{
+			$this->directory .= str_replace('.', '', trim($dir, '/')).'/';
+		}
+	}
+}
diff --git a/system/core/Security.php b/system/core/Security.php
new file mode 100644
index 00000000..818b0933
--- /dev/null
+++ b/system/core/Security.php
@@ -0,0 +1,1068 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Security Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Security
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/security.html
+ */
+class CI_Security {
+
+	/**
+	 * List of sanitize filename strings
+	 *
+	 * @var	array
+	 */
+	public $filename_bad_chars =	array(
+		'../', '<!--', '-->', '<', '>',
+		"'", '"', '&', '$', '#',
+		'{', '}', '[', ']', '=',
+		';', '?', '%20', '%22',
+		'%3c',		// <
+		'%253c',	// <
+		'%3e',		// >
+		'%0e',		// >
+		'%28',		// (
+		'%29',		// )
+		'%2528',	// (
+		'%26',		// &
+		'%24',		// $
+		'%3f',		// ?
+		'%3b',		// ;
+		'%3d'		// =
+	);
+
+	/**
+	 * Character set
+	 *
+	 * Will be overridden by the constructor.
+	 *
+	 * @var	string
+	 */
+	public $charset = 'UTF-8';
+
+	/**
+	 * XSS Hash
+	 *
+	 * Random Hash for protecting URLs.
+	 *
+	 * @var	string
+	 */
+	protected $_xss_hash;
+
+	/**
+	 * CSRF Hash
+	 *
+	 * Random hash for Cross Site Request Forgery protection cookie
+	 *
+	 * @var	string
+	 */
+	protected $_csrf_hash;
+
+	/**
+	 * CSRF Expire time
+	 *
+	 * Expiration time for Cross Site Request Forgery protection cookie.
+	 * Defaults to two hours (in seconds).
+	 *
+	 * @var	int
+	 */
+	protected $_csrf_expire =	7200;
+
+	/**
+	 * CSRF Token name
+	 *
+	 * Token name for Cross Site Request Forgery protection cookie.
+	 *
+	 * @var	string
+	 */
+	protected $_csrf_token_name =	'ci_csrf_token';
+
+	/**
+	 * CSRF Cookie name
+	 *
+	 * Cookie name for Cross Site Request Forgery protection cookie.
+	 *
+	 * @var	string
+	 */
+	protected $_csrf_cookie_name =	'ci_csrf_token';
+
+	/**
+	 * List of never allowed strings
+	 *
+	 * @var	array
+	 */
+	protected $_never_allowed_str =	array(
+		'document.cookie' => '[removed]',
+		'(document).cookie' => '[removed]',
+		'document.write'  => '[removed]',
+		'(document).write'  => '[removed]',
+		'.parentNode'     => '[removed]',
+		'.innerHTML'      => '[removed]',
+		'-moz-binding'    => '[removed]',
+		'<!--'            => '&lt;!--',
+		'-->'             => '--&gt;',
+		'<![CDATA['       => '&lt;![CDATA[',
+		'<comment>'	  => '&lt;comment&gt;',
+		'<%'              => '&lt;&#37;'
+	);
+
+	/**
+	 * List of never allowed regex replacements
+	 *
+	 * @var	array
+	 */
+	protected $_never_allowed_regex = array(
+		'javascript\s*:',
+		'(\(?document\)?|\(?window\)?(\.document)?)\.(location|on\w*)',
+		'expression\s*(\(|&\#40;)', // CSS and IE
+		'vbscript\s*:', // IE, surprise!
+		'wscript\s*:', // IE
+		'jscript\s*:', // IE
+		'vbs\s*:', // IE
+		'Redirect\s+30\d',
+		"([\"'])?data\s*:[^\\1]*?base64[^\\1]*?,[^\\1]*?\\1?"
+	);
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct($charset)
+	{
+		$this->charset = $charset;
+
+		// Is CSRF protection enabled?
+		if (config_item('csrf_protection') && ! is_cli())
+		{
+			// CSRF config
+			foreach (array('csrf_expire', 'csrf_token_name', 'csrf_cookie_name') as $key)
+			{
+				if (NULL !== ($val = config_item($key)))
+				{
+					$this->{'_'.$key} = $val;
+				}
+			}
+
+			// Append application specific cookie prefix
+			if ($cookie_prefix = config_item('cookie_prefix'))
+			{
+				$this->_csrf_cookie_name = $cookie_prefix.$this->_csrf_cookie_name;
+			}
+
+			// Set the CSRF hash
+			$this->_csrf_set_hash();
+			$this->csrf_verify();
+		}
+
+		log_message('info', 'Security Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CSRF Verify
+	 *
+	 * @return	CI_Security
+	 */
+	public function csrf_verify()
+	{
+		// If it's not a POST request we will set the CSRF cookie
+		if (strtoupper($_SERVER['REQUEST_METHOD']) !== 'POST')
+		{
+			return $this->csrf_set_cookie();
+		}
+
+		// Check if URI has been whitelisted from CSRF checks
+		if ($exclude_uris = config_item('csrf_exclude_uris'))
+		{
+			$uri = load_class('URI', 'core');
+			foreach ($exclude_uris as $excluded)
+			{
+				if (preg_match('#^'.$excluded.'$#i'.(UTF8_ENABLED ? 'u' : ''), $uri->uri_string()))
+				{
+					return $this;
+				}
+			}
+		}
+
+		// Check CSRF token validity, but don't error on mismatch just yet - we'll want to regenerate
+		$valid = isset($_POST[$this->_csrf_token_name], $_COOKIE[$this->_csrf_cookie_name])
+			&& is_string($_POST[$this->_csrf_token_name]) && is_string($_COOKIE[$this->_csrf_cookie_name])
+			&& hash_equals($_POST[$this->_csrf_token_name], $_COOKIE[$this->_csrf_cookie_name]);
+
+		// We kill this since we're done and we don't want to pollute the _POST array
+		unset($_POST[$this->_csrf_token_name]);
+
+		// Regenerate on every submission?
+		if (config_item('csrf_regenerate'))
+		{
+			// Nothing should last forever
+			unset($_COOKIE[$this->_csrf_cookie_name]);
+			$this->_csrf_hash = NULL;
+		}
+
+		$this->_csrf_set_hash();
+		$this->csrf_set_cookie();
+
+		if ($valid !== TRUE)
+		{
+			$this->csrf_show_error();
+		}
+
+		log_message('info', 'CSRF token verified');
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CSRF Set Cookie
+	 *
+	 * @codeCoverageIgnore
+	 * @return	CI_Security
+	 */
+	public function csrf_set_cookie()
+	{
+		$expire = time() + $this->_csrf_expire;
+		$secure_cookie = (bool) config_item('cookie_secure');
+
+		if ($secure_cookie && ! is_https())
+		{
+			return FALSE;
+		}
+
+		setcookie(
+			$this->_csrf_cookie_name,
+			$this->_csrf_hash,
+			$expire,
+			config_item('cookie_path'),
+			config_item('cookie_domain'),
+			$secure_cookie,
+			config_item('cookie_httponly')
+		);
+		log_message('info', 'CSRF cookie sent');
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show CSRF Error
+	 *
+	 * @return	void
+	 */
+	public function csrf_show_error()
+	{
+		show_error('The action you have requested is not allowed.', 403);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get CSRF Hash
+	 *
+	 * @see		CI_Security::$_csrf_hash
+	 * @return 	string	CSRF hash
+	 */
+	public function get_csrf_hash()
+	{
+		return $this->_csrf_hash;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get CSRF Token Name
+	 *
+	 * @see		CI_Security::$_csrf_token_name
+	 * @return	string	CSRF token name
+	 */
+	public function get_csrf_token_name()
+	{
+		return $this->_csrf_token_name;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * XSS Clean
+	 *
+	 * Sanitizes data so that Cross Site Scripting Hacks can be
+	 * prevented.  This method does a fair amount of work but
+	 * it is extremely thorough, designed to prevent even the
+	 * most obscure XSS attempts.  Nothing is ever 100% foolproof,
+	 * of course, but I haven't been able to get anything passed
+	 * the filter.
+	 *
+	 * Note: Should only be used to deal with data upon submission.
+	 *	 It's not something that should be used for general
+	 *	 runtime processing.
+	 *
+	 * @link	http://channel.bitflux.ch/wiki/XSS_Prevention
+	 * 		Based in part on some code and ideas from Bitflux.
+	 *
+	 * @link	http://ha.ckers.org/xss.html
+	 * 		To help develop this script I used this great list of
+	 *		vulnerabilities along with a few other hacks I've
+	 *		harvested from examining vulnerabilities in other programs.
+	 *
+	 * @param	string|string[]	$str		Input data
+	 * @param 	bool		$is_image	Whether the input is an image
+	 * @return	string
+	 */
+	public function xss_clean($str, $is_image = FALSE)
+	{
+		// Is the string an array?
+		if (is_array($str))
+		{
+			foreach ($str as $key => &$value)
+			{
+				$str[$key] = $this->xss_clean($value);
+			}
+
+			return $str;
+		}
+
+		// Remove Invisible Characters
+		$str = remove_invisible_characters($str);
+
+		/*
+		 * URL Decode
+		 *
+		 * Just in case stuff like this is submitted:
+		 *
+		 * <a href="http://%77%77%77%2E%67%6F%6F%67%6C%65%2E%63%6F%6D">Google</a>
+		 *
+		 * Note: Use rawurldecode() so it does not remove plus signs
+		 */
+		if (stripos($str, '%') !== false)
+		{
+			do
+			{
+				$oldstr = $str;
+				$str = rawurldecode($str);
+				$str = preg_replace_callback('#%(?:\s*[0-9a-f]){2,}#i', array($this, '_urldecodespaces'), $str);
+			}
+			while ($oldstr !== $str);
+			unset($oldstr);
+		}
+
+		/*
+		 * Convert character entities to ASCII
+		 *
+		 * This permits our tests below to work reliably.
+		 * We only convert entities that are within tags since
+		 * these are the ones that will pose security problems.
+		 */
+		$str = preg_replace_callback("/[^a-z0-9>]+[a-z0-9]+=([\'\"]).*?\\1/si", array($this, '_convert_attribute'), $str);
+		$str = preg_replace_callback('/<\w+.*/si', array($this, '_decode_entity'), $str);
+
+		// Remove Invisible Characters Again!
+		$str = remove_invisible_characters($str);
+
+		/*
+		 * Convert all tabs to spaces
+		 *
+		 * This prevents strings like this: ja	vascript
+		 * NOTE: we deal with spaces between characters later.
+		 * NOTE: preg_replace was found to be amazingly slow here on
+		 * large blocks of data, so we use str_replace.
+		 */
+		$str = str_replace("\t", ' ', $str);
+
+		// Capture converted string for later comparison
+		$converted_string = $str;
+
+		// Remove Strings that are never allowed
+		$str = $this->_do_never_allowed($str);
+
+		/*
+		 * Makes PHP tags safe
+		 *
+		 * Note: XML tags are inadvertently replaced too:
+		 *
+		 * <?xml
+		 *
+		 * But it doesn't seem to pose a problem.
+		 */
+		if ($is_image === TRUE)
+		{
+			// Images have a tendency to have the PHP short opening and
+			// closing tags every so often so we skip those and only
+			// do the long opening tags.
+			$str = preg_replace('/<\?(php)/i', '&lt;?\\1', $str);
+		}
+		else
+		{
+			$str = str_replace(array('<?', '?'.'>'), array('&lt;?', '?&gt;'), $str);
+		}
+
+		/*
+		 * Compact any exploded words
+		 *
+		 * This corrects words like:  j a v a s c r i p t
+		 * These words are compacted back to their correct state.
+		 */
+		$words = array(
+			'javascript', 'expression', 'vbscript', 'jscript', 'wscript',
+			'vbs', 'script', 'base64', 'applet', 'alert', 'document',
+			'write', 'cookie', 'window', 'confirm', 'prompt', 'eval'
+		);
+
+		foreach ($words as $word)
+		{
+			$word = implode('\s*', str_split($word)).'\s*';
+
+			// We only want to do this when it is followed by a non-word character
+			// That way valid stuff like "dealer to" does not become "dealerto"
+			$str = preg_replace_callback('#('.substr($word, 0, -3).')(\W)#is', array($this, '_compact_exploded_words'), $str);
+		}
+
+		/*
+		 * Remove disallowed Javascript in links or img tags
+		 * We used to do some version comparisons and use of stripos(),
+		 * but it is dog slow compared to these simplified non-capturing
+		 * preg_match(), especially if the pattern exists in the string
+		 *
+		 * Note: It was reported that not only space characters, but all in
+		 * the following pattern can be parsed as separators between a tag name
+		 * and its attributes: [\d\s"\'`;,\/\=\(\x00\x0B\x09\x0C]
+		 * ... however, remove_invisible_characters() above already strips the
+		 * hex-encoded ones, so we'll skip them below.
+		 */
+		do
+		{
+			$original = $str;
+
+			if (preg_match('/<a/i', $str))
+			{
+				$str = preg_replace_callback('#<a(?:rea)?[^a-z0-9>]+([^>]*?)(?:>|$)#si', array($this, '_js_link_removal'), $str);
+			}
+
+			if (preg_match('/<img/i', $str))
+			{
+				$str = preg_replace_callback('#<img[^a-z0-9]+([^>]*?)(?:\s?/?>|$)#si', array($this, '_js_img_removal'), $str);
+			}
+
+			if (preg_match('/script|xss/i', $str))
+			{
+				$str = preg_replace('#</*(?:script|xss).*?>#si', '[removed]', $str);
+			}
+		}
+		while ($original !== $str);
+		unset($original);
+
+		/*
+		 * Sanitize naughty HTML elements
+		 *
+		 * If a tag containing any of the words in the list
+		 * below is found, the tag gets converted to entities.
+		 *
+		 * So this: <blink>
+		 * Becomes: &lt;blink&gt;
+		 */
+		$pattern = '#'
+			.'<((?<slash>/*\s*)((?<tagName>[a-z0-9]+)(?=[^a-z0-9]|$)|.+)' // tag start and name, followed by a non-tag character
+			.'[^\s\042\047a-z0-9>/=]*' // a valid attribute character immediately after the tag would count as a separator
+			// optional attributes
+			.'(?<attributes>(?:[\s\042\047/=]*' // non-attribute characters, excluding > (tag close) for obvious reasons
+			.'[^\s\042\047>/=]+' // attribute characters
+			// optional attribute-value
+				.'(?:\s*=' // attribute-value separator
+					.'(?:[^\s\042\047=><`]+|\s*\042[^\042]*\042|\s*\047[^\047]*\047|\s*(?U:[^\s\042\047=><`]*))' // single, double or non-quoted value
+				.')?' // end optional attribute-value group
+			.')*)' // end optional attributes group
+			.'[^>]*)(?<closeTag>\>)?#isS';
+
+		// Note: It would be nice to optimize this for speed, BUT
+		//       only matching the naughty elements here results in
+		//       false positives and in turn - vulnerabilities!
+		do
+		{
+			$old_str = $str;
+			$str = preg_replace_callback($pattern, array($this, '_sanitize_naughty_html'), $str);
+		}
+		while ($old_str !== $str);
+		unset($old_str);
+
+		/*
+		 * Sanitize naughty scripting elements
+		 *
+		 * Similar to above, only instead of looking for
+		 * tags it looks for PHP and JavaScript commands
+		 * that are disallowed. Rather than removing the
+		 * code, it simply converts the parenthesis to entities
+		 * rendering the code un-executable.
+		 *
+		 * For example:	eval('some code')
+		 * Becomes:	eval&#40;'some code'&#41;
+		 */
+		$str = preg_replace(
+			'#(alert|prompt|confirm|cmd|passthru|eval|exec|expression|system|fopen|fsockopen|file|file_get_contents|readfile|unlink)(\s*)\((.*?)\)#si',
+			'\\1\\2&#40;\\3&#41;',
+			$str
+		);
+
+		// Same thing, but for "tag functions" (e.g. eval`some code`)
+		// See https://github.com/bcit-ci/CodeIgniter/issues/5420
+		$str = preg_replace(
+			'#(alert|prompt|confirm|cmd|passthru|eval|exec|expression|system|fopen|fsockopen|file|file_get_contents|readfile|unlink)(\s*)`(.*?)`#si',
+			'\\1\\2&#96;\\3&#96;',
+			$str
+		);
+
+		// Final clean up
+		// This adds a bit of extra precaution in case
+		// something got through the above filters
+		$str = $this->_do_never_allowed($str);
+
+		/*
+		 * Images are Handled in a Special Way
+		 * - Essentially, we want to know that after all of the character
+		 * conversion is done whether any unwanted, likely XSS, code was found.
+		 * If not, we return TRUE, as the image is clean.
+		 * However, if the string post-conversion does not matched the
+		 * string post-removal of XSS, then it fails, as there was unwanted XSS
+		 * code found and removed/changed during processing.
+		 */
+		if ($is_image === TRUE)
+		{
+			return ($str === $converted_string);
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * XSS Hash
+	 *
+	 * Generates the XSS hash if needed and returns it.
+	 *
+	 * @see		CI_Security::$_xss_hash
+	 * @return	string	XSS hash
+	 */
+	public function xss_hash()
+	{
+		if ($this->_xss_hash === NULL)
+		{
+			$rand = $this->get_random_bytes(16);
+			$this->_xss_hash = ($rand === FALSE)
+				? md5(uniqid(mt_rand(), TRUE))
+				: bin2hex($rand);
+		}
+
+		return $this->_xss_hash;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get random bytes
+	 *
+	 * @param	int	$length	Output length
+	 * @return	string
+	 */
+	public function get_random_bytes($length)
+	{
+		if (empty($length) OR ! ctype_digit((string) $length))
+		{
+			return FALSE;
+		}
+
+		if (function_exists('random_bytes'))
+		{
+			try
+			{
+				// The cast is required to avoid TypeError
+				return random_bytes((int) $length);
+			}
+			catch (Exception $e)
+			{
+				// If random_bytes() can't do the job, we can't either ...
+				// There's no point in using fallbacks.
+				log_message('error', $e->getMessage());
+				return FALSE;
+			}
+		}
+
+		// Unfortunately, none of the following PRNGs is guaranteed to exist ...
+		if (defined('MCRYPT_DEV_URANDOM') && ($output = mcrypt_create_iv($length, MCRYPT_DEV_URANDOM)) !== FALSE)
+		{
+			return $output;
+		}
+
+
+		if (is_readable('/dev/urandom') && ($fp = fopen('/dev/urandom', 'rb')) !== FALSE)
+		{
+			// Try not to waste entropy ...
+			stream_set_chunk_size($fp, $length);
+			$output = fread($fp, $length);
+			fclose($fp);
+			if ($output !== FALSE)
+			{
+				return $output;
+			}
+		}
+
+		if (function_exists('openssl_random_pseudo_bytes'))
+		{
+			return openssl_random_pseudo_bytes($length);
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * HTML Entities Decode
+	 *
+	 * A replacement for html_entity_decode()
+	 *
+	 * The reason we are not using html_entity_decode() by itself is because
+	 * while it is not technically correct to leave out the semicolon
+	 * at the end of an entity most browsers will still interpret the entity
+	 * correctly. html_entity_decode() does not convert entities without
+	 * semicolons, so we are left with our own little solution here. Bummer.
+	 *
+	 * @link	https://secure.php.net/html-entity-decode
+	 *
+	 * @param	string	$str		Input
+	 * @param	string	$charset	Character set
+	 * @return	string
+	 */
+	public function entity_decode($str, $charset = NULL)
+	{
+		if (strpos($str, '&') === FALSE)
+		{
+			return $str;
+		}
+
+		static $_entities;
+
+		isset($charset)   OR $charset = $this->charset;
+		isset($_entities) OR $_entities = array_map('strtolower', get_html_translation_table(HTML_ENTITIES, ENT_COMPAT | ENT_HTML5, $charset));
+
+		do
+		{
+			$str_compare = $str;
+
+			// Decode standard entities, avoiding false positives
+			if (preg_match_all('/&[a-z]{2,}(?![a-z;])/i', $str, $matches))
+			{
+				$replace = array();
+				$matches = array_unique(array_map('strtolower', $matches[0]));
+				foreach ($matches as &$match)
+				{
+					if (($char = array_search($match.';', $_entities, TRUE)) !== FALSE)
+					{
+						$replace[$match] = $char;
+					}
+				}
+
+				$str = str_replace(array_keys($replace), array_values($replace), $str);
+			}
+
+			// Decode numeric & UTF16 two byte entities
+			$str = html_entity_decode(
+				preg_replace('/(&#(?:x0*[0-9a-f]{2,5}(?![0-9a-f;])|(?:0*\d{2,4}(?![0-9;]))))/iS', '$1;', $str),
+				ENT_COMPAT | ENT_HTML5,
+				$charset
+			);
+		}
+		while ($str_compare !== $str);
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sanitize Filename
+	 *
+	 * @param	string	$str		Input file name
+	 * @param 	bool	$relative_path	Whether to preserve paths
+	 * @return	string
+	 */
+	public function sanitize_filename($str, $relative_path = FALSE)
+	{
+		$bad = $this->filename_bad_chars;
+
+		if ( ! $relative_path)
+		{
+			$bad[] = './';
+			$bad[] = '/';
+		}
+
+		$str = remove_invisible_characters($str, FALSE);
+
+		do
+		{
+			$old = $str;
+			$str = str_replace($bad, '', $str);
+		}
+		while ($old !== $str);
+
+		return stripslashes($str);
+	}
+
+	// ----------------------------------------------------------------
+
+	/**
+	 * Strip Image Tags
+	 *
+	 * @param	string	$str
+	 * @return	string
+	 */
+	public function strip_image_tags($str)
+	{
+		return preg_replace(
+			array(
+				'#<img[\s/]+.*?src\s*=\s*(["\'])([^\\1]+?)\\1.*?\>#i',
+				'#<img[\s/]+.*?src\s*=\s*?(([^\s"\'=<>`]+)).*?\>#i'
+			),
+			'\\2',
+			$str
+		);
+	}
+
+	// ----------------------------------------------------------------
+
+	/**
+	 * URL-decode taking spaces into account
+	 *
+	 * @see		https://github.com/bcit-ci/CodeIgniter/issues/4877
+	 * @param	array	$matches
+	 * @return	string
+	 */
+	protected function _urldecodespaces($matches)
+	{
+		$input    = $matches[0];
+		$nospaces = preg_replace('#\s+#', '', $input);
+		return ($nospaces === $input)
+			? $input
+			: rawurldecode($nospaces);
+	}
+
+	// ----------------------------------------------------------------
+
+	/**
+	 * Compact Exploded Words
+	 *
+	 * Callback method for xss_clean() to remove whitespace from
+	 * things like 'j a v a s c r i p t'.
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param	array	$matches
+	 * @return	string
+	 */
+	protected function _compact_exploded_words($matches)
+	{
+		return preg_replace('/\s+/s', '', $matches[1]).$matches[2];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sanitize Naughty HTML
+	 *
+	 * Callback method for xss_clean() to remove naughty HTML elements.
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param	array	$matches
+	 * @return	string
+	 */
+	protected function _sanitize_naughty_html($matches)
+	{
+		static $naughty_tags    = array(
+			'alert', 'area', 'prompt', 'confirm', 'applet', 'audio', 'basefont', 'base', 'behavior', 'bgsound',
+			'blink', 'body', 'embed', 'expression', 'form', 'frameset', 'frame', 'head', 'html', 'ilayer',
+			'iframe', 'input', 'button', 'select', 'isindex', 'layer', 'link', 'meta', 'keygen', 'object',
+			'plaintext', 'style', 'script', 'textarea', 'title', 'math', 'video', 'svg', 'xml', 'xss'
+		);
+
+		static $evil_attributes = array(
+			'on\w+', 'style', 'xmlns', 'formaction', 'form', 'xlink:href', 'FSCommand', 'seekSegmentTime'
+		);
+
+		// First, escape unclosed tags
+		if (empty($matches['closeTag']))
+		{
+			return '&lt;'.$matches[1];
+		}
+		// Is the element that we caught naughty? If so, escape it
+		elseif (in_array(strtolower($matches['tagName']), $naughty_tags, TRUE))
+		{
+			return '&lt;'.$matches[1].'&gt;';
+		}
+		// For other tags, see if their attributes are "evil" and strip those
+		elseif (isset($matches['attributes']))
+		{
+			// We'll store the already filtered attributes here
+			$attributes = array();
+
+			// Attribute-catching pattern
+			$attributes_pattern = '#'
+				.'(?<name>[^\s\042\047>/=]+)' // attribute characters
+				// optional attribute-value
+				.'(?:\s*=(?<value>[^\s\042\047=><`]+|\s*\042[^\042]*\042|\s*\047[^\047]*\047|\s*(?U:[^\s\042\047=><`]*)))' // attribute-value separator
+				.'#i';
+
+			// Blacklist pattern for evil attribute names
+			$is_evil_pattern = '#^('.implode('|', $evil_attributes).')$#i';
+
+			// Each iteration filters a single attribute
+			do
+			{
+				// Strip any non-alpha characters that may precede an attribute.
+				// Browsers often parse these incorrectly and that has been a
+				// of numerous XSS issues we've had.
+				$matches['attributes'] = preg_replace('#^[^a-z]+#i', '', $matches['attributes']);
+
+				if ( ! preg_match($attributes_pattern, $matches['attributes'], $attribute, PREG_OFFSET_CAPTURE))
+				{
+					// No (valid) attribute found? Discard everything else inside the tag
+					break;
+				}
+
+				if (
+					// Is it indeed an "evil" attribute?
+					preg_match($is_evil_pattern, $attribute['name'][0])
+					// Or does it have an equals sign, but no value and not quoted? Strip that too!
+					OR (trim($attribute['value'][0]) === '')
+				)
+				{
+					$attributes[] = 'xss=removed';
+				}
+				else
+				{
+					$attributes[] = $attribute[0][0];
+				}
+
+				$matches['attributes'] = substr($matches['attributes'], $attribute[0][1] + strlen($attribute[0][0]));
+			}
+			while ($matches['attributes'] !== '');
+
+			$attributes = empty($attributes)
+				? ''
+				: ' '.implode(' ', $attributes);
+			return '<'.$matches['slash'].$matches['tagName'].$attributes.'>';
+		}
+
+		return $matches[0];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * JS Link Removal
+	 *
+	 * Callback method for xss_clean() to sanitize links.
+	 *
+	 * This limits the PCRE backtracks, making it more performance friendly
+	 * and prevents PREG_BACKTRACK_LIMIT_ERROR from being triggered in
+	 * PHP 5.2+ on link-heavy strings.
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param	array	$match
+	 * @return	string
+	 */
+	protected function _js_link_removal($match)
+	{
+		return str_replace(
+			$match[1],
+			preg_replace(
+				'#href=.*?(?:(?:alert|prompt|confirm)(?:\(|&\#40;|`|&\#96;)|javascript:|livescript:|mocha:|charset=|window\.|\(?document\)?\.|\.cookie|<script|<xss|d\s*a\s*t\s*a\s*:)#si',
+				'',
+				$this->_filter_attributes($match[1])
+			),
+			$match[0]
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * JS Image Removal
+	 *
+	 * Callback method for xss_clean() to sanitize image tags.
+	 *
+	 * This limits the PCRE backtracks, making it more performance friendly
+	 * and prevents PREG_BACKTRACK_LIMIT_ERROR from being triggered in
+	 * PHP 5.2+ on image tag heavy strings.
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param	array	$match
+	 * @return	string
+	 */
+	protected function _js_img_removal($match)
+	{
+		return str_replace(
+			$match[1],
+			preg_replace(
+				'#src=.*?(?:(?:alert|prompt|confirm|eval)(?:\(|&\#40;|`|&\#96;)|javascript:|livescript:|mocha:|charset=|window\.|\(?document\)?\.|\.cookie|<script|<xss|base64\s*,)#si',
+				'',
+				$this->_filter_attributes($match[1])
+			),
+			$match[0]
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Attribute Conversion
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param	array	$match
+	 * @return	string
+	 */
+	protected function _convert_attribute($match)
+	{
+		return str_replace(array('>', '<', '\\'), array('&gt;', '&lt;', '\\\\'), $match[0]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Filter Attributes
+	 *
+	 * Filters tag attributes for consistency and safety.
+	 *
+	 * @used-by	CI_Security::_js_img_removal()
+	 * @used-by	CI_Security::_js_link_removal()
+	 * @param	string	$str
+	 * @return	string
+	 */
+	protected function _filter_attributes($str)
+	{
+		$out = '';
+		if (preg_match_all('#\s*[a-z\-]+\s*=\s*(\042|\047)([^\\1]*?)\\1#is', $str, $matches))
+		{
+			foreach ($matches[0] as $match)
+			{
+				$out .= preg_replace('#/\*.*?\*/#s', '', $match);
+			}
+		}
+
+		return $out;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * HTML Entity Decode Callback
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param	array	$match
+	 * @return	string
+	 */
+	protected function _decode_entity($match)
+	{
+		// Protect GET variables in URLs
+		// 901119URL5918AMP18930PROTECT8198
+		$match = preg_replace('|\&([a-z\_0-9\-]+)\=([a-z\_0-9\-/]+)|i', $this->xss_hash().'\\1=\\2', $match[0]);
+
+		// Decode, then un-protect URL GET vars
+		return str_replace(
+			$this->xss_hash(),
+			'&',
+			$this->entity_decode($match, $this->charset)
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Do Never Allowed
+	 *
+	 * @used-by	CI_Security::xss_clean()
+	 * @param 	string
+	 * @return 	string
+	 */
+	protected function _do_never_allowed($str)
+	{
+		$str = str_replace(array_keys($this->_never_allowed_str), $this->_never_allowed_str, $str);
+
+		foreach ($this->_never_allowed_regex as $regex)
+		{
+			$str = preg_replace('#'.$regex.'#is', '[removed]', $str);
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set CSRF Hash and Cookie
+	 *
+	 * @return	string
+	 */
+	protected function _csrf_set_hash()
+	{
+		if ($this->_csrf_hash === NULL)
+		{
+			// If the cookie exists we will use its value.
+			// We don't necessarily want to regenerate it with
+			// each page load since a page could contain embedded
+			// sub-pages causing this feature to fail
+			if (isset($_COOKIE[$this->_csrf_cookie_name]) && is_string($_COOKIE[$this->_csrf_cookie_name])
+				&& preg_match('#^[0-9a-f]{32}$#iS', $_COOKIE[$this->_csrf_cookie_name]) === 1)
+			{
+				return $this->_csrf_hash = $_COOKIE[$this->_csrf_cookie_name];
+			}
+
+			$rand = $this->get_random_bytes(16);
+			$this->_csrf_hash = ($rand === FALSE)
+				? md5(uniqid(mt_rand(), TRUE))
+				: bin2hex($rand);
+		}
+
+		return $this->_csrf_hash;
+	}
+}
diff --git a/system/core/URI.php b/system/core/URI.php
new file mode 100644
index 00000000..9bef22d6
--- /dev/null
+++ b/system/core/URI.php
@@ -0,0 +1,661 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * URI Class
+ *
+ * Parses URIs and determines routing
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	URI
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/uri.html
+ */
+class CI_URI {
+
+	/**
+	 * List of cached URI segments
+	 *
+	 * @var	array
+	 */
+	public $keyval = array();
+
+	/**
+	 * Current URI string
+	 *
+	 * @var	string
+	 */
+	public $uri_string = '';
+
+	/**
+	 * List of URI segments
+	 *
+	 * Starts at 1 instead of 0.
+	 *
+	 * @var	array
+	 */
+	public $segments = array();
+
+	/**
+	 * List of routed URI segments
+	 *
+	 * Starts at 1 instead of 0.
+	 *
+	 * @var	array
+	 */
+	public $rsegments = array();
+
+	/**
+	 * Permitted URI chars
+	 *
+	 * PCRE character group allowed in URI segments
+	 *
+	 * @var	string
+	 */
+	protected $_permitted_uri_chars;
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct(CI_Config $config)
+	{
+		$this->config = $config;
+
+		// If it's a CLI request, ignore the configuration
+		if (is_cli())
+		{
+			$this->_set_uri_string($this->_parse_argv(), TRUE);
+		}
+		// If query strings are enabled, we don't need to parse any segments.
+		elseif ($this->config->item('enable_query_strings') !== TRUE)
+		{
+			$this->_permitted_uri_chars = $this->config->item('permitted_uri_chars');
+			$protocol = $this->config->item('uri_protocol');
+			empty($protocol) && $protocol = 'REQUEST_URI';
+
+			switch ($protocol)
+			{
+				case 'AUTO': // For BC purposes only
+				case 'REQUEST_URI':
+					$uri = $this->_parse_request_uri();
+					break;
+				case 'QUERY_STRING':
+					$uri = $this->_parse_query_string();
+					break;
+				case 'PATH_INFO':
+				default:
+					$uri = isset($_SERVER[$protocol])
+						? $_SERVER[$protocol]
+						: $this->_parse_request_uri();
+					break;
+			}
+
+			$this->_set_uri_string($uri, FALSE);
+		}
+
+		log_message('info', 'URI Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set URI String
+	 *
+	 * @param 	string	$str	Input URI string
+	 * @param	bool	$is_cli	Whether the input comes from CLI
+	 * @return	void
+	 */
+	protected function _set_uri_string($str, $is_cli = FALSE)
+	{
+		// CLI requests have a bit simpler logic
+		if ($is_cli)
+		{
+			if (($this->uri_string = trim($str, '/')) === '')
+			{
+				return;
+			}
+
+			$this->segments[0] = NULL;
+			foreach (explode('/', $this->uri_string) as $segment)
+			{
+				if (($segment = trim($segment)) !== '')
+				{
+					$this->segments[] = $segment;
+				}
+			}
+
+			unset($this->segments[0]);
+			return;
+		}
+
+		// Filter out control characters and trim slashes
+		$this->uri_string = trim(remove_invisible_characters($str, FALSE), '/');
+
+		if ($this->uri_string === '')
+		{
+			return;
+		}
+
+		// Remove the URL suffix, if present
+		if (($suffix = (string) $this->config->item('url_suffix')) !== '')
+		{
+			$slen = strlen($suffix);
+
+			if (substr($this->uri_string, -$slen) === $suffix)
+			{
+				$this->uri_string = substr($this->uri_string, 0, -$slen);
+			}
+		}
+
+		$this->segments[0] = NULL;
+		foreach (explode('/', trim($this->uri_string, '/')) as $segment)
+		{
+			$segment = trim($segment);
+			// Filter segments for security
+			$this->filter_uri($segment);
+
+			if ($segment !== '')
+			{
+				$this->segments[] = $segment;
+			}
+		}
+
+		unset($this->segments[0]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse REQUEST_URI
+	 *
+	 * Will parse REQUEST_URI and automatically detect the URI from it,
+	 * while fixing the query string if necessary.
+	 *
+	 * @return	string
+	 */
+	protected function _parse_request_uri()
+	{
+		if ( ! isset($_SERVER['REQUEST_URI'], $_SERVER['SCRIPT_NAME']))
+		{
+			return '';
+		}
+
+		// parse_url() returns false if no host is present, but the path or query string
+		// contains a colon followed by a number
+		$uri = parse_url('http://dummy'.$_SERVER['REQUEST_URI']);
+		$query = isset($uri['query']) ? $uri['query'] : '';
+		$uri = isset($uri['path']) ? $uri['path'] : '';
+
+		if (isset($_SERVER['SCRIPT_NAME'][0]))
+		{
+			if (strpos($uri, $_SERVER['SCRIPT_NAME']) === 0)
+			{
+				$uri = (string) substr($uri, strlen($_SERVER['SCRIPT_NAME']));
+			}
+			elseif (strpos($uri, dirname($_SERVER['SCRIPT_NAME'])) === 0)
+			{
+				$uri = (string) substr($uri, strlen(dirname($_SERVER['SCRIPT_NAME'])));
+			}
+		}
+
+		// This section ensures that even on servers that require the URI to be in the query string (Nginx) a correct
+		// URI is found, and also fixes the QUERY_STRING server var and $_GET array.
+		if (trim($uri, '/') === '' && strncmp($query, '/', 1) === 0)
+		{
+			$query = explode('?', $query, 2);
+			$uri = $query[0];
+			$_SERVER['QUERY_STRING'] = isset($query[1]) ? $query[1] : '';
+		}
+		else
+		{
+			$_SERVER['QUERY_STRING'] = $query;
+		}
+
+		parse_str($_SERVER['QUERY_STRING'], $_GET);
+
+		if ($uri === '/' OR $uri === '')
+		{
+			return '/';
+		}
+
+		// Do some final cleaning of the URI and return it
+		return $this->_remove_relative_directory($uri);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse QUERY_STRING
+	 *
+	 * Will parse QUERY_STRING and automatically detect the URI from it.
+	 *
+	 * @return	string
+	 */
+	protected function _parse_query_string()
+	{
+		$uri = isset($_SERVER['QUERY_STRING']) ? $_SERVER['QUERY_STRING'] : @getenv('QUERY_STRING');
+
+		if (trim($uri, '/') === '')
+		{
+			return '';
+		}
+		elseif (strncmp($uri, '/', 1) === 0)
+		{
+			$uri = explode('?', $uri, 2);
+			$_SERVER['QUERY_STRING'] = isset($uri[1]) ? $uri[1] : '';
+			$uri = $uri[0];
+		}
+
+		parse_str($_SERVER['QUERY_STRING'], $_GET);
+
+		return $this->_remove_relative_directory($uri);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse CLI arguments
+	 *
+	 * Take each command line argument and assume it is a URI segment.
+	 *
+	 * @return	string
+	 */
+	protected function _parse_argv()
+	{
+		$args = array_slice($_SERVER['argv'], 1);
+		return $args ? implode('/', $args) : '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Remove relative directory (../) and multi slashes (///)
+	 *
+	 * Do some final cleaning of the URI and return it, currently only used in self::_parse_request_uri()
+	 *
+	 * @param	string	$uri
+	 * @return	string
+	 */
+	protected function _remove_relative_directory($uri)
+	{
+		$uris = array();
+		$tok = strtok($uri, '/');
+		while ($tok !== FALSE)
+		{
+			if (( ! empty($tok) OR $tok === '0') && $tok !== '..')
+			{
+				$uris[] = $tok;
+			}
+			$tok = strtok('/');
+		}
+
+		return implode('/', $uris);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Filter URI
+	 *
+	 * Filters segments for malicious characters.
+	 *
+	 * @param	string	$str
+	 * @return	void
+	 */
+	public function filter_uri(&$str)
+	{
+		if ( ! empty($str) && ! empty($this->_permitted_uri_chars) && ! preg_match('/^['.$this->_permitted_uri_chars.']+$/i'.(UTF8_ENABLED ? 'u' : ''), $str))
+		{
+			show_error('The URI you submitted has disallowed characters.', 400);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch URI Segment
+	 *
+	 * @see		CI_URI::$segments
+	 * @param	int		$n		Index
+	 * @param	mixed		$no_result	What to return if the segment index is not found
+	 * @return	mixed
+	 */
+	public function segment($n, $no_result = NULL)
+	{
+		return isset($this->segments[$n]) ? $this->segments[$n] : $no_result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch URI "routed" Segment
+	 *
+	 * Returns the re-routed URI segment (assuming routing rules are used)
+	 * based on the index provided. If there is no routing, will return
+	 * the same result as CI_URI::segment().
+	 *
+	 * @see		CI_URI::$rsegments
+	 * @see		CI_URI::segment()
+	 * @param	int		$n		Index
+	 * @param	mixed		$no_result	What to return if the segment index is not found
+	 * @return	mixed
+	 */
+	public function rsegment($n, $no_result = NULL)
+	{
+		return isset($this->rsegments[$n]) ? $this->rsegments[$n] : $no_result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * URI to assoc
+	 *
+	 * Generates an associative array of URI data starting at the supplied
+	 * segment index. For example, if this is your URI:
+	 *
+	 *	example.com/user/search/name/joe/location/UK/gender/male
+	 *
+	 * You can use this method to generate an array with this prototype:
+	 *
+	 *	array (
+	 *		name => joe
+	 *		location => UK
+	 *		gender => male
+	 *	 )
+	 *
+	 * @param	int	$n		Index (default: 3)
+	 * @param	array	$default	Default values
+	 * @return	array
+	 */
+	public function uri_to_assoc($n = 3, $default = array())
+	{
+		return $this->_uri_to_assoc($n, $default, 'segment');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Routed URI to assoc
+	 *
+	 * Identical to CI_URI::uri_to_assoc(), only it uses the re-routed
+	 * segment array.
+	 *
+	 * @see		CI_URI::uri_to_assoc()
+	 * @param 	int	$n		Index (default: 3)
+	 * @param 	array	$default	Default values
+	 * @return 	array
+	 */
+	public function ruri_to_assoc($n = 3, $default = array())
+	{
+		return $this->_uri_to_assoc($n, $default, 'rsegment');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal URI-to-assoc
+	 *
+	 * Generates a key/value pair from the URI string or re-routed URI string.
+	 *
+	 * @used-by	CI_URI::uri_to_assoc()
+	 * @used-by	CI_URI::ruri_to_assoc()
+	 * @param	int	$n		Index (default: 3)
+	 * @param	array	$default	Default values
+	 * @param	string	$which		Array name ('segment' or 'rsegment')
+	 * @return	array
+	 */
+	protected function _uri_to_assoc($n = 3, $default = array(), $which = 'segment')
+	{
+		if ( ! is_numeric($n))
+		{
+			return $default;
+		}
+
+		if (isset($this->keyval[$which], $this->keyval[$which][$n]))
+		{
+			return $this->keyval[$which][$n];
+		}
+
+		$total_segments = "total_{$which}s";
+		$segment_array = "{$which}_array";
+
+		if ($this->$total_segments() < $n)
+		{
+			return (count($default) === 0)
+				? array()
+				: array_fill_keys($default, NULL);
+		}
+
+		$segments = array_slice($this->$segment_array(), ($n - 1));
+		$i = 0;
+		$lastval = '';
+		$retval = array();
+		foreach ($segments as $seg)
+		{
+			if ($i % 2)
+			{
+				$retval[$lastval] = $seg;
+			}
+			else
+			{
+				$retval[$seg] = NULL;
+				$lastval = $seg;
+			}
+
+			$i++;
+		}
+
+		if (count($default) > 0)
+		{
+			foreach ($default as $val)
+			{
+				if ( ! array_key_exists($val, $retval))
+				{
+					$retval[$val] = NULL;
+				}
+			}
+		}
+
+		// Cache the array for reuse
+		isset($this->keyval[$which]) OR $this->keyval[$which] = array();
+		$this->keyval[$which][$n] = $retval;
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Assoc to URI
+	 *
+	 * Generates a URI string from an associative array.
+	 *
+	 * @param	array	$array	Input array of key/value pairs
+	 * @return	string	URI string
+	 */
+	public function assoc_to_uri($array)
+	{
+		$temp = array();
+		foreach ((array) $array as $key => $val)
+		{
+			$temp[] = $key;
+			$temp[] = $val;
+		}
+
+		return implode('/', $temp);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Slash segment
+	 *
+	 * Fetches an URI segment with a slash.
+	 *
+	 * @param	int	$n	Index
+	 * @param	string	$where	Where to add the slash ('trailing' or 'leading')
+	 * @return	string
+	 */
+	public function slash_segment($n, $where = 'trailing')
+	{
+		return $this->_slash_segment($n, $where, 'segment');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Slash routed segment
+	 *
+	 * Fetches an URI routed segment with a slash.
+	 *
+	 * @param	int	$n	Index
+	 * @param	string	$where	Where to add the slash ('trailing' or 'leading')
+	 * @return	string
+	 */
+	public function slash_rsegment($n, $where = 'trailing')
+	{
+		return $this->_slash_segment($n, $where, 'rsegment');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal Slash segment
+	 *
+	 * Fetches an URI Segment and adds a slash to it.
+	 *
+	 * @used-by	CI_URI::slash_segment()
+	 * @used-by	CI_URI::slash_rsegment()
+	 *
+	 * @param	int	$n	Index
+	 * @param	string	$where	Where to add the slash ('trailing' or 'leading')
+	 * @param	string	$which	Array name ('segment' or 'rsegment')
+	 * @return	string
+	 */
+	protected function _slash_segment($n, $where = 'trailing', $which = 'segment')
+	{
+		$leading = $trailing = '/';
+
+		if ($where === 'trailing')
+		{
+			$leading	= '';
+		}
+		elseif ($where === 'leading')
+		{
+			$trailing	= '';
+		}
+
+		return $leading.$this->$which($n).$trailing;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Segment Array
+	 *
+	 * @return	array	CI_URI::$segments
+	 */
+	public function segment_array()
+	{
+		return $this->segments;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Routed Segment Array
+	 *
+	 * @return	array	CI_URI::$rsegments
+	 */
+	public function rsegment_array()
+	{
+		return $this->rsegments;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Total number of segments
+	 *
+	 * @return	int
+	 */
+	public function total_segments()
+	{
+		return count($this->segments);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Total number of routed segments
+	 *
+	 * @return	int
+	 */
+	public function total_rsegments()
+	{
+		return count($this->rsegments);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch URI string
+	 *
+	 * @return	string	CI_URI::$uri_string
+	 */
+	public function uri_string()
+	{
+		return $this->uri_string;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Re-routed URI string
+	 *
+	 * @return	string
+	 */
+	public function ruri_string()
+	{
+		return ltrim(load_class('Router', 'core')->directory, '/').implode('/', $this->rsegments);
+	}
+
+}
diff --git a/system/core/Utf8.php b/system/core/Utf8.php
new file mode 100644
index 00000000..5e18f07b
--- /dev/null
+++ b/system/core/Utf8.php
@@ -0,0 +1,164 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Utf8 Class
+ *
+ * Provides support for UTF-8 environments
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	UTF-8
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/utf8.html
+ */
+class CI_Utf8 {
+
+	/**
+	 * Class constructor
+	 *
+	 * Determines if UTF-8 support is to be enabled.
+	 *
+	 * @return	void
+	 */
+	public function __construct($charset)
+	{
+		if (
+			defined('PREG_BAD_UTF8_ERROR')                     // PCRE must support UTF-8
+			&& (ICONV_ENABLED === TRUE OR MB_ENABLED === TRUE) // iconv or mbstring must be installed
+			&& $charset === 'UTF-8'                            // Application charset must be UTF-8
+		)
+		{
+			define('UTF8_ENABLED', TRUE);
+			log_message('info', 'UTF-8 Support Enabled');
+		}
+		else
+		{
+			define('UTF8_ENABLED', FALSE);
+			log_message('info', 'UTF-8 Support Disabled');
+		}
+
+		log_message('info', 'Utf8 Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Clean UTF-8 strings
+	 *
+	 * Ensures strings contain only valid UTF-8 characters.
+	 *
+	 * @param	string	$str	String to clean
+	 * @return	string
+	 */
+	public function clean_string($str)
+	{
+		if ($this->is_ascii($str) === FALSE)
+		{
+			if (MB_ENABLED)
+			{
+				$str = mb_convert_encoding($str, 'UTF-8', 'UTF-8');
+			}
+			elseif (ICONV_ENABLED)
+			{
+				$str = @iconv('UTF-8', 'UTF-8//IGNORE', $str);
+			}
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Remove ASCII control characters
+	 *
+	 * Removes all ASCII control characters except horizontal tabs,
+	 * line feeds, and carriage returns, as all others can cause
+	 * problems in XML.
+	 *
+	 * @param	string	$str	String to clean
+	 * @return	string
+	 */
+	public function safe_ascii_for_xml($str)
+	{
+		return remove_invisible_characters($str, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Convert to UTF-8
+	 *
+	 * Attempts to convert a string to UTF-8.
+	 *
+	 * @param	string	$str		Input string
+	 * @param	string	$encoding	Input encoding
+	 * @return	string	$str encoded in UTF-8 or FALSE on failure
+	 */
+	public function convert_to_utf8($str, $encoding)
+	{
+		if (MB_ENABLED)
+		{
+			return mb_convert_encoding($str, 'UTF-8', $encoding);
+		}
+		elseif (ICONV_ENABLED)
+		{
+			return @iconv($encoding, 'UTF-8', $str);
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is ASCII?
+	 *
+	 * Tests if a string is standard 7-bit ASCII or not.
+	 *
+	 * @param	string	$str	String to check
+	 * @return	bool
+	 */
+	public function is_ascii($str)
+	{
+		return (preg_match('/[^\x00-\x7F]/S', $str) === 0);
+	}
+
+}
diff --git a/system/core/compat/hash.php b/system/core/compat/hash.php
new file mode 100644
index 00000000..f1829a3a
--- /dev/null
+++ b/system/core/compat/hash.php
@@ -0,0 +1,252 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PHP ext/hash compatibility package
+ *
+ * @package		CodeIgniter
+ * @subpackage	CodeIgniter
+ * @category	Compatibility
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/
+ * @link		https://secure.php.net/hash
+ */
+
+// ------------------------------------------------------------------------
+
+if (is_php('5.6'))
+{
+	return;
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('hash_equals'))
+{
+	/**
+	 * hash_equals()
+	 *
+	 * @link	https://secure.php.net/hash_equals
+	 * @param	string	$known_string
+	 * @param	string	$user_string
+	 * @return	bool
+	 */
+	function hash_equals($known_string, $user_string)
+	{
+		if ( ! is_string($known_string))
+		{
+			trigger_error('hash_equals(): Expected known_string to be a string, '.strtolower(gettype($known_string)).' given', E_USER_WARNING);
+			return FALSE;
+		}
+		elseif ( ! is_string($user_string))
+		{
+			trigger_error('hash_equals(): Expected user_string to be a string, '.strtolower(gettype($user_string)).' given', E_USER_WARNING);
+			return FALSE;
+		}
+		elseif (($length = strlen($known_string)) !== strlen($user_string))
+		{
+			return FALSE;
+		}
+
+		$diff = 0;
+		for ($i = 0; $i < $length; $i++)
+		{
+			$diff |= ord($known_string[$i]) ^ ord($user_string[$i]);
+		}
+
+		return ($diff === 0);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if (is_php('5.5'))
+{
+	return;
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('hash_pbkdf2'))
+{
+	/**
+	 * hash_pbkdf2()
+	 *
+	 * @link	https://secure.php.net/hash_pbkdf2
+	 * @param	string	$algo
+	 * @param	string	$password
+	 * @param	string	$salt
+	 * @param	int	$iterations
+	 * @param	int	$length
+	 * @param	bool	$raw_output
+	 * @return	string
+	 */
+	function hash_pbkdf2($algo, $password, $salt, $iterations, $length = 0, $raw_output = FALSE)
+	{
+		if ( ! in_array(strtolower($algo), hash_algos(), TRUE))
+		{
+			trigger_error('hash_pbkdf2(): Unknown hashing algorithm: '.$algo, E_USER_WARNING);
+			return FALSE;
+		}
+
+		if (($type = gettype($iterations)) !== 'integer')
+		{
+			if ($type === 'object' && method_exists($iterations, '__toString'))
+			{
+				$iterations = (string) $iterations;
+			}
+
+			if (is_string($iterations) && is_numeric($iterations))
+			{
+				$iterations = (int) $iterations;
+			}
+			else
+			{
+				trigger_error('hash_pbkdf2() expects parameter 4 to be long, '.$type.' given', E_USER_WARNING);
+				return NULL;
+			}
+		}
+
+		if ($iterations < 1)
+		{
+			trigger_error('hash_pbkdf2(): Iterations must be a positive integer: '.$iterations, E_USER_WARNING);
+			return FALSE;
+		}
+
+		if (($type = gettype($length)) !== 'integer')
+		{
+			if ($type === 'object' && method_exists($length, '__toString'))
+			{
+				$length = (string) $length;
+			}
+
+			if (is_string($length) && is_numeric($length))
+			{
+				$length = (int) $length;
+			}
+			else
+			{
+				trigger_error('hash_pbkdf2() expects parameter 5 to be long, '.$type.' given', E_USER_WARNING);
+				return NULL;
+			}
+		}
+
+		if ($length < 0)
+		{
+			trigger_error('hash_pbkdf2(): Length must be greater than or equal to 0: '.$length, E_USER_WARNING);
+			return FALSE;
+		}
+
+		$hash_length = defined('MB_OVERLOAD_STRING')
+			? mb_strlen(hash($algo, NULL, TRUE), '8bit')
+			: strlen(hash($algo, NULL, TRUE));
+		empty($length) && $length = $hash_length;
+
+		// Pre-hash password inputs longer than the algorithm's block size
+		// (i.e. prepare HMAC key) to mitigate potential DoS attacks.
+		static $block_sizes;
+		empty($block_sizes) && $block_sizes = array(
+			'gost' => 32,
+			'haval128,3' => 128,
+			'haval160,3' => 128,
+			'haval192,3' => 128,
+			'haval224,3' => 128,
+			'haval256,3' => 128,
+			'haval128,4' => 128,
+			'haval160,4' => 128,
+			'haval192,4' => 128,
+			'haval224,4' => 128,
+			'haval256,4' => 128,
+			'haval128,5' => 128,
+			'haval160,5' => 128,
+			'haval192,5' => 128,
+			'haval224,5' => 128,
+			'haval256,5' => 128,
+			'md2' => 16,
+			'md4' => 64,
+			'md5' => 64,
+			'ripemd128' => 64,
+			'ripemd160' => 64,
+			'ripemd256' => 64,
+			'ripemd320' => 64,
+			'sha1' => 64,
+			'sha224' => 64,
+			'sha256' => 64,
+			'sha384' => 128,
+			'sha512' => 128,
+			'snefru' => 32,
+			'snefru256' => 32,
+			'tiger128,3' => 64,
+			'tiger160,3' => 64,
+			'tiger192,3' => 64,
+			'tiger128,4' => 64,
+			'tiger160,4' => 64,
+			'tiger192,4' => 64,
+			'whirlpool' => 64
+		);
+
+		if (isset($block_sizes[$algo], $password[$block_sizes[$algo]]))
+		{
+			$password = hash($algo, $password, TRUE);
+		}
+
+		$hash = '';
+		// Note: Blocks are NOT 0-indexed
+		for ($bc = (int) ceil($length / $hash_length), $bi = 1; $bi <= $bc; $bi++)
+		{
+			$key = $derived_key = hash_hmac($algo, $salt.pack('N', $bi), $password, TRUE);
+			for ($i = 1; $i < $iterations; $i++)
+			{
+				$derived_key ^= $key = hash_hmac($algo, $key, $password, TRUE);
+			}
+
+			$hash .= $derived_key;
+		}
+
+		// This is not RFC-compatible, but we're aiming for natural PHP compatibility
+		if ( ! $raw_output)
+		{
+			$hash = bin2hex($hash);
+		}
+
+		return defined('MB_OVERLOAD_STRING')
+			? mb_substr($hash, 0, $length, '8bit')
+			: substr($hash, 0, $length);
+	}
+}
diff --git a/system/core/compat/index.html b/system/core/compat/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/core/compat/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/core/compat/mbstring.php b/system/core/compat/mbstring.php
new file mode 100644
index 00000000..af73b8cc
--- /dev/null
+++ b/system/core/compat/mbstring.php
@@ -0,0 +1,149 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PHP ext/mbstring compatibility package
+ *
+ * @package		CodeIgniter
+ * @subpackage	CodeIgniter
+ * @category	Compatibility
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/
+ * @link		https://secure.php.net/mbstring
+ */
+
+// ------------------------------------------------------------------------
+
+if (MB_ENABLED === TRUE)
+{
+	return;
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('mb_strlen'))
+{
+	/**
+	 * mb_strlen()
+	 *
+	 * WARNING: This function WILL fall-back to strlen()
+	 * if iconv is not available!
+	 *
+	 * @link	https://secure.php.net/mb_strlen
+	 * @param	string	$str
+	 * @param	string	$encoding
+	 * @return	int
+	 */
+	function mb_strlen($str, $encoding = NULL)
+	{
+		if (ICONV_ENABLED === TRUE)
+		{
+			return iconv_strlen($str, isset($encoding) ? $encoding : config_item('charset'));
+		}
+
+		log_message('debug', 'Compatibility (mbstring): iconv_strlen() is not available, falling back to strlen().');
+		return strlen($str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('mb_strpos'))
+{
+	/**
+	 * mb_strpos()
+	 *
+	 * WARNING: This function WILL fall-back to strpos()
+	 * if iconv is not available!
+	 *
+	 * @link	https://secure.php.net/mb_strpos
+	 * @param	string	$haystack
+	 * @param	string	$needle
+	 * @param	int	$offset
+	 * @param	string	$encoding
+	 * @return	mixed
+	 */
+	function mb_strpos($haystack, $needle, $offset = 0, $encoding = NULL)
+	{
+		if (ICONV_ENABLED === TRUE)
+		{
+			return iconv_strpos($haystack, $needle, $offset, isset($encoding) ? $encoding : config_item('charset'));
+		}
+
+		log_message('debug', 'Compatibility (mbstring): iconv_strpos() is not available, falling back to strpos().');
+		return strpos($haystack, $needle, $offset);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('mb_substr'))
+{
+	/**
+	 * mb_substr()
+	 *
+	 * WARNING: This function WILL fall-back to substr()
+	 * if iconv is not available.
+	 *
+	 * @link	https://secure.php.net/mb_substr
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int 	$length
+	 * @param	string	$encoding
+	 * @return	string
+	 */
+	function mb_substr($str, $start, $length = NULL, $encoding = NULL)
+	{
+		if (ICONV_ENABLED === TRUE)
+		{
+			isset($encoding) OR $encoding = config_item('charset');
+			return iconv_substr(
+				$str,
+				$start,
+				isset($length) ? $length : iconv_strlen($str, $encoding), // NULL doesn't work
+				$encoding
+			);
+		}
+
+		log_message('debug', 'Compatibility (mbstring): iconv_substr() is not available, falling back to substr().');
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/core/compat/password.php b/system/core/compat/password.php
new file mode 100644
index 00000000..306300ed
--- /dev/null
+++ b/system/core/compat/password.php
@@ -0,0 +1,251 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PHP ext/standard/password compatibility package
+ *
+ * @package		CodeIgniter
+ * @subpackage	CodeIgniter
+ * @category	Compatibility
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/
+ * @link		https://secure.php.net/password
+ */
+
+// ------------------------------------------------------------------------
+
+if (is_php('5.5') OR ! defined('CRYPT_BLOWFISH') OR CRYPT_BLOWFISH !== 1 OR defined('HHVM_VERSION'))
+{
+	return;
+}
+
+// ------------------------------------------------------------------------
+
+defined('PASSWORD_BCRYPT') OR define('PASSWORD_BCRYPT', 1);
+defined('PASSWORD_DEFAULT') OR define('PASSWORD_DEFAULT', PASSWORD_BCRYPT);
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('password_get_info'))
+{
+	/**
+	 * password_get_info()
+	 *
+	 * @link	https://secure.php.net/password_get_info
+	 * @param	string	$hash
+	 * @return	array
+	 */
+	function password_get_info($hash)
+	{
+		return (strlen($hash) < 60 OR sscanf($hash, '$2y$%d', $hash) !== 1)
+			? array('algo' => 0, 'algoName' => 'unknown', 'options' => array())
+			: array('algo' => 1, 'algoName' => 'bcrypt', 'options' => array('cost' => $hash));
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('password_hash'))
+{
+	/**
+	 * password_hash()
+	 *
+	 * @link	https://secure.php.net/password_hash
+	 * @param	string	$password
+	 * @param	int	$algo
+	 * @param	array	$options
+	 * @return	mixed
+	 */
+	function password_hash($password, $algo, array $options = array())
+	{
+		static $func_overload;
+		isset($func_overload) OR $func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+
+		if ($algo !== 1)
+		{
+			trigger_error('password_hash(): Unknown hashing algorithm: '.(int) $algo, E_USER_WARNING);
+			return NULL;
+		}
+
+		if (isset($options['cost']) && ($options['cost'] < 4 OR $options['cost'] > 31))
+		{
+			trigger_error('password_hash(): Invalid bcrypt cost parameter specified: '.(int) $options['cost'], E_USER_WARNING);
+			return NULL;
+		}
+
+		if (isset($options['salt']) && ($saltlen = ($func_overload ? mb_strlen($options['salt'], '8bit') : strlen($options['salt']))) < 22)
+		{
+			trigger_error('password_hash(): Provided salt is too short: '.$saltlen.' expecting 22', E_USER_WARNING);
+			return NULL;
+		}
+		elseif ( ! isset($options['salt']))
+		{
+			if (function_exists('random_bytes'))
+			{
+				try
+				{
+					$options['salt'] = random_bytes(16);
+				}
+				catch (Exception $e)
+				{
+					log_message('error', 'compat/password: Error while trying to use random_bytes(): '.$e->getMessage());
+					return FALSE;
+				}
+			}
+			elseif (defined('MCRYPT_DEV_URANDOM'))
+			{
+				$options['salt'] = mcrypt_create_iv(16, MCRYPT_DEV_URANDOM);
+			}
+			elseif (DIRECTORY_SEPARATOR === '/' && (is_readable($dev = '/dev/arandom') OR is_readable($dev = '/dev/urandom')))
+			{
+				if (($fp = fopen($dev, 'rb')) === FALSE)
+				{
+					log_message('error', 'compat/password: Unable to open '.$dev.' for reading.');
+					return FALSE;
+				}
+
+				// Try not to waste entropy ...
+				stream_set_chunk_size($fp, 16);
+
+				$options['salt'] = '';
+				for ($read = 0; $read < 16; $read = ($func_overload) ? mb_strlen($options['salt'], '8bit') : strlen($options['salt']))
+				{
+					if (($read = fread($fp, 16 - $read)) === FALSE)
+					{
+						log_message('error', 'compat/password: Error while reading from '.$dev.'.');
+						return FALSE;
+					}
+					$options['salt'] .= $read;
+				}
+
+				fclose($fp);
+			}
+			elseif (function_exists('openssl_random_pseudo_bytes'))
+			{
+				$is_secure = NULL;
+				$options['salt'] = openssl_random_pseudo_bytes(16, $is_secure);
+				if ($is_secure !== TRUE)
+				{
+					log_message('error', 'compat/password: openssl_random_pseudo_bytes() set the $cryto_strong flag to FALSE');
+					return FALSE;
+				}
+			}
+			else
+			{
+				log_message('error', 'compat/password: No CSPRNG available.');
+				return FALSE;
+			}
+
+			$options['salt'] = str_replace('+', '.', rtrim(base64_encode($options['salt']), '='));
+		}
+		elseif ( ! preg_match('#^[a-zA-Z0-9./]+$#D', $options['salt']))
+		{
+			$options['salt'] = str_replace('+', '.', rtrim(base64_encode($options['salt']), '='));
+		}
+
+		isset($options['cost']) OR $options['cost'] = 10;
+
+		return (strlen($password = crypt($password, sprintf('$2y$%02d$%s', $options['cost'], $options['salt']))) === 60)
+			? $password
+			: FALSE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('password_needs_rehash'))
+{
+	/**
+	 * password_needs_rehash()
+	 *
+	 * @link	https://secure.php.net/password_needs_rehash
+	 * @param	string	$hash
+	 * @param	int	$algo
+	 * @param	array	$options
+	 * @return	bool
+	 */
+	function password_needs_rehash($hash, $algo, array $options = array())
+	{
+		$info = password_get_info($hash);
+
+		if ($algo !== $info['algo'])
+		{
+			return TRUE;
+		}
+		elseif ($algo === 1)
+		{
+			$options['cost'] = isset($options['cost']) ? (int) $options['cost'] : 10;
+			return ($info['options']['cost'] !== $options['cost']);
+		}
+
+		// Odd at first glance, but according to a comment in PHP's own unit tests,
+		// because it is an unknown algorithm - it's valid and therefore doesn't
+		// need rehashing.
+		return FALSE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('password_verify'))
+{
+	/**
+	 * password_verify()
+	 *
+	 * @link	https://secure.php.net/password_verify
+	 * @param	string	$password
+	 * @param	string	$hash
+	 * @return	bool
+	 */
+	function password_verify($password, $hash)
+	{
+		if (strlen($hash) !== 60 OR strlen($password = crypt($password, $hash)) !== 60)
+		{
+			return FALSE;
+		}
+
+		$compare = 0;
+		for ($i = 0; $i < 60; $i++)
+		{
+			$compare |= (ord($password[$i]) ^ ord($hash[$i]));
+		}
+
+		return ($compare === 0);
+	}
+}
diff --git a/system/core/compat/standard.php b/system/core/compat/standard.php
new file mode 100644
index 00000000..21feeb04
--- /dev/null
+++ b/system/core/compat/standard.php
@@ -0,0 +1,134 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PHP ext/standard compatibility package
+ *
+ * @package		CodeIgniter
+ * @subpackage	CodeIgniter
+ * @category	Compatibility
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/
+ */
+
+// ------------------------------------------------------------------------
+
+if (is_php('5.5'))
+{
+	return;
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('array_column'))
+{
+	/**
+	 * array_column()
+	 *
+	 * @link	https://secure.php.net/array_column
+	 * @param	array	$array
+	 * @param	mixed	$column_key
+	 * @param	mixed	$index_key
+	 * @return	array
+	 */
+	function array_column(array $array, $column_key, $index_key = NULL)
+	{
+		if ( ! in_array($type = gettype($column_key), array('integer', 'string', 'NULL'), TRUE))
+		{
+			if ($type === 'double')
+			{
+				$column_key = (int) $column_key;
+			}
+			elseif ($type === 'object' && method_exists($column_key, '__toString'))
+			{
+				$column_key = (string) $column_key;
+			}
+			else
+			{
+				trigger_error('array_column(): The column key should be either a string or an integer', E_USER_WARNING);
+				return FALSE;
+			}
+		}
+
+		if ( ! in_array($type = gettype($index_key), array('integer', 'string', 'NULL'), TRUE))
+		{
+			if ($type === 'double')
+			{
+				$index_key = (int) $index_key;
+			}
+			elseif ($type === 'object' && method_exists($index_key, '__toString'))
+			{
+				$index_key = (string) $index_key;
+			}
+			else
+			{
+				trigger_error('array_column(): The index key should be either a string or an integer', E_USER_WARNING);
+				return FALSE;
+			}
+		}
+
+		$result = array();
+		foreach ($array as &$a)
+		{
+			if ($column_key === NULL)
+			{
+				$value = $a;
+			}
+			elseif (is_array($a) && array_key_exists($column_key, $a))
+			{
+				$value = $a[$column_key];
+			}
+			else
+			{
+				continue;
+			}
+
+			if ($index_key === NULL OR ! array_key_exists($index_key, $a))
+			{
+				$result[] = $value;
+			}
+			else
+			{
+				$result[$a[$index_key]] = $value;
+			}
+		}
+
+		return $result;
+	}
+}
diff --git a/system/core/index.html b/system/core/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/core/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/DB.php b/system/database/DB.php
new file mode 100644
index 00000000..c42bb6b9
--- /dev/null
+++ b/system/database/DB.php
@@ -0,0 +1,221 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Initialize the database
+ *
+ * @category	Database
+ * @author	EllisLab Dev Team
+ * @link	https://codeigniter.com/userguide3/database/
+ *
+ * @param 	string|string[]	$params
+ * @param 	bool		$query_builder_override
+ *				Determines if query builder should be used or not
+ */
+function &DB($params = '', $query_builder_override = NULL)
+{
+	// Load the DB config file if a DSN string wasn't passed
+	if (is_string($params) && strpos($params, '://') === FALSE)
+	{
+		// Is the config file in the environment folder?
+		if ( ! file_exists($file_path = APPPATH.'config/'.ENVIRONMENT.'/database.php')
+			&& ! file_exists($file_path = APPPATH.'config/database.php'))
+		{
+			show_error('The configuration file database.php does not exist.');
+		}
+
+		include($file_path);
+
+		// Make packages contain database config files,
+		// given that the controller instance already exists
+		if (class_exists('CI_Controller', FALSE))
+		{
+			foreach (get_instance()->load->get_package_paths() as $path)
+			{
+				if ($path !== APPPATH)
+				{
+					if (file_exists($file_path = $path.'config/'.ENVIRONMENT.'/database.php'))
+					{
+						include($file_path);
+					}
+					elseif (file_exists($file_path = $path.'config/database.php'))
+					{
+						include($file_path);
+					}
+				}
+			}
+		}
+
+		if (empty($db))
+		{
+			show_error('No database connection settings were found in the database config file.');
+		}
+
+		if ($params !== '')
+		{
+			$active_group = $params;
+		}
+
+		if ( ! isset($active_group))
+		{
+			show_error('You have not specified a database connection group via $active_group in your config/database.php file.');
+		}
+		elseif ( ! isset($db[$active_group]))
+		{
+			show_error('You have specified an invalid database connection group ('.$active_group.') in your config/database.php file.');
+		}
+
+		$params = $db[$active_group];
+	}
+	elseif (is_string($params))
+	{
+		/**
+		 * Parse the URL from the DSN string
+		 * Database settings can be passed as discreet
+		 * parameters or as a data source name in the first
+		 * parameter. DSNs must have this prototype:
+		 * $dsn = 'driver://username:password@hostname/database';
+		 */
+		if (($dsn = @parse_url($params)) === FALSE)
+		{
+			show_error('Invalid DB Connection String');
+		}
+
+		$params = array(
+			'dbdriver'	=> $dsn['scheme'],
+			'hostname'	=> isset($dsn['host']) ? rawurldecode($dsn['host']) : '',
+			'port'		=> isset($dsn['port']) ? rawurldecode($dsn['port']) : '',
+			'username'	=> isset($dsn['user']) ? rawurldecode($dsn['user']) : '',
+			'password'	=> isset($dsn['pass']) ? rawurldecode($dsn['pass']) : '',
+			'database'	=> isset($dsn['path']) ? rawurldecode(substr($dsn['path'], 1)) : ''
+		);
+
+		// Were additional config items set?
+		if (isset($dsn['query']))
+		{
+			parse_str($dsn['query'], $extra);
+
+			foreach ($extra as $key => $val)
+			{
+				if (is_string($val) && in_array(strtoupper($val), array('TRUE', 'FALSE', 'NULL')))
+				{
+					$val = var_export($val, TRUE);
+				}
+
+				$params[$key] = $val;
+			}
+		}
+	}
+
+	// No DB specified yet? Beat them senseless...
+	if (empty($params['dbdriver']))
+	{
+		show_error('You have not selected a database type to connect to.');
+	}
+
+	// Load the DB classes. Note: Since the query builder class is optional
+	// we need to dynamically create a class that extends proper parent class
+	// based on whether we're using the query builder class or not.
+	if ($query_builder_override !== NULL)
+	{
+		$query_builder = $query_builder_override;
+	}
+	// Backwards compatibility work-around for keeping the
+	// $active_record config variable working. Should be
+	// removed in v3.1
+	elseif ( ! isset($query_builder) && isset($active_record))
+	{
+		$query_builder = $active_record;
+	}
+
+	require_once(BASEPATH.'database/DB_driver.php');
+
+	if ( ! isset($query_builder) OR $query_builder === TRUE)
+	{
+		require_once(BASEPATH.'database/DB_query_builder.php');
+		if ( ! class_exists('CI_DB', FALSE))
+		{
+			/**
+			 * CI_DB
+			 *
+			 * Acts as an alias for both CI_DB_driver and CI_DB_query_builder.
+			 *
+			 * @see	CI_DB_query_builder
+			 * @see	CI_DB_driver
+			 */
+			class CI_DB extends CI_DB_query_builder { }
+		}
+	}
+	elseif ( ! class_exists('CI_DB', FALSE))
+	{
+		/**
+		 * @ignore
+		 */
+		class CI_DB extends CI_DB_driver { }
+	}
+
+	// Load the DB driver
+	$driver_file = BASEPATH.'database/drivers/'.$params['dbdriver'].'/'.$params['dbdriver'].'_driver.php';
+	file_exists($driver_file) OR show_error('Invalid DB driver');
+	require_once($driver_file);
+
+	// Load the result classes as well
+	require_once(BASEPATH.'database/DB_result.php');
+	require_once(BASEPATH.'database/drivers/'.$params['dbdriver'].'/'.$params['dbdriver'].'_result.php');
+
+	// Instantiate the DB adapter
+	$driver = 'CI_DB_'.$params['dbdriver'].'_driver';
+	$DB = new $driver($params);
+
+	// Check for a subdriver
+	if ( ! empty($DB->subdriver))
+	{
+		$driver_file = BASEPATH.'database/drivers/'.$DB->dbdriver.'/subdrivers/'.$DB->dbdriver.'_'.$DB->subdriver.'_driver.php';
+
+		if (file_exists($driver_file))
+		{
+			require_once($driver_file);
+			$driver = 'CI_DB_'.$DB->dbdriver.'_'.$DB->subdriver.'_driver';
+			$DB = new $driver($params);
+		}
+	}
+
+	$DB->initialize();
+	return $DB;
+}
diff --git a/system/database/DB_cache.php b/system/database/DB_cache.php
new file mode 100644
index 00000000..2467a30f
--- /dev/null
+++ b/system/database/DB_cache.php
@@ -0,0 +1,221 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Database Cache Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_Cache {
+
+	/**
+	 * CI Singleton
+	 *
+	 * @var	object
+	 */
+	public $CI;
+
+	/**
+	 * Database object
+	 *
+	 * Allows passing of DB object so that multiple database connections
+	 * and returned DB objects can be supported.
+	 *
+	 * @var	object
+	 */
+	public $db;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	object	&$db
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		// Assign the main CI object to $this->CI and load the file helper since we use it a lot
+		$this->CI =& get_instance();
+		$this->db =& $db;
+		$this->CI->load->helper('file');
+
+		$this->check_path();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Cache Directory Path
+	 *
+	 * @param	string	$path	Path to the cache directory
+	 * @return	bool
+	 */
+	public function check_path($path = '')
+	{
+		if ($path === '')
+		{
+			if ($this->db->cachedir === '')
+			{
+				return $this->db->cache_off();
+			}
+
+			$path = $this->db->cachedir;
+		}
+
+		// Add a trailing slash to the path if needed
+		$path = realpath($path)
+			? rtrim(realpath($path), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR
+			: rtrim($path, '/').'/';
+
+		if ( ! is_dir($path))
+		{
+			log_message('debug', 'DB cache path error: '.$path);
+
+			// If the path is wrong we'll turn off caching
+			return $this->db->cache_off();
+		}
+
+		if ( ! is_really_writable($path))
+		{
+			log_message('debug', 'DB cache dir not writable: '.$path);
+
+			// If the path is not really writable we'll turn off caching
+			return $this->db->cache_off();
+		}
+
+		$this->db->cachedir = $path;
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Retrieve a cached query
+	 *
+	 * The URI being requested will become the name of the cache sub-folder.
+	 * An MD5 hash of the SQL statement will become the cache file name.
+	 *
+	 * @param	string	$sql
+	 * @return	string
+	 */
+	public function read($sql)
+	{
+		$segment_one = ($this->CI->uri->segment(1) == FALSE) ? 'default' : $this->CI->uri->segment(1);
+		$segment_two = ($this->CI->uri->segment(2) == FALSE) ? 'index' : $this->CI->uri->segment(2);
+		$filepath = $this->db->cachedir.$segment_one.'+'.$segment_two.'/'.md5($sql);
+
+		if ( ! is_file($filepath) OR FALSE === ($cachedata = file_get_contents($filepath)))
+		{
+			return FALSE;
+		}
+
+		return unserialize($cachedata);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Write a query to a cache file
+	 *
+	 * @param	string	$sql
+	 * @param	object	$object
+	 * @return	bool
+	 */
+	public function write($sql, $object)
+	{
+		$segment_one = ($this->CI->uri->segment(1) == FALSE) ? 'default' : $this->CI->uri->segment(1);
+		$segment_two = ($this->CI->uri->segment(2) == FALSE) ? 'index' : $this->CI->uri->segment(2);
+		$dir_path = $this->db->cachedir.$segment_one.'+'.$segment_two.'/';
+		$filename = md5($sql);
+
+		if ( ! is_dir($dir_path) && ! @mkdir($dir_path, 0750))
+		{
+			return FALSE;
+		}
+
+		if (write_file($dir_path.$filename, serialize($object)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		chmod($dir_path.$filename, 0640);
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete cache files within a particular directory
+	 *
+	 * @param	string	$segment_one
+	 * @param	string	$segment_two
+	 * @return	void
+	 */
+	public function delete($segment_one = '', $segment_two = '')
+	{
+		if ($segment_one === '')
+		{
+			$segment_one  = ($this->CI->uri->segment(1) == FALSE) ? 'default' : $this->CI->uri->segment(1);
+		}
+
+		if ($segment_two === '')
+		{
+			$segment_two = ($this->CI->uri->segment(2) == FALSE) ? 'index' : $this->CI->uri->segment(2);
+		}
+
+		$dir_path = $this->db->cachedir.$segment_one.'+'.$segment_two.'/';
+		delete_files($dir_path, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete all existing cache files
+	 *
+	 * @return	void
+	 */
+	public function delete_all()
+	{
+		delete_files($this->db->cachedir, TRUE, TRUE);
+	}
+
+}
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
new file mode 100644
index 00000000..cba96d9a
--- /dev/null
+++ b/system/database/DB_driver.php
@@ -0,0 +1,1938 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Database Driver Class
+ *
+ * This is the platform-independent base DB implementation class.
+ * This class will not be called directly. Rather, the adapter
+ * class for the specific database will extend and instantiate it.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+abstract class CI_DB_driver {
+
+	/**
+	 * Data Source Name / Connect string
+	 *
+	 * @var	string
+	 */
+	public $dsn;
+
+	/**
+	 * Username
+	 *
+	 * @var	string
+	 */
+	public $username;
+
+	/**
+	 * Password
+	 *
+	 * @var	string
+	 */
+	public $password;
+
+	/**
+	 * Hostname
+	 *
+	 * @var	string
+	 */
+	public $hostname;
+
+	/**
+	 * Database name
+	 *
+	 * @var	string
+	 */
+	public $database;
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver		= 'mysqli';
+
+	/**
+	 * Sub-driver
+	 *
+	 * @used-by	CI_DB_pdo_driver
+	 * @var	string
+	 */
+	public $subdriver;
+
+	/**
+	 * Table prefix
+	 *
+	 * @var	string
+	 */
+	public $dbprefix		= '';
+
+	/**
+	 * Character set
+	 *
+	 * @var	string
+	 */
+	public $char_set		= 'utf8';
+
+	/**
+	 * Collation
+	 *
+	 * @var	string
+	 */
+	public $dbcollat		= 'utf8_general_ci';
+
+	/**
+	 * Encryption flag/data
+	 *
+	 * @var	mixed
+	 */
+	public $encrypt			= FALSE;
+
+	/**
+	 * Swap Prefix
+	 *
+	 * @var	string
+	 */
+	public $swap_pre		= '';
+
+	/**
+	 * Database port
+	 *
+	 * @var	int
+	 */
+	public $port			= NULL;
+
+	/**
+	 * Persistent connection flag
+	 *
+	 * @var	bool
+	 */
+	public $pconnect		= FALSE;
+
+	/**
+	 * Connection ID
+	 *
+	 * @var	object|resource
+	 */
+	public $conn_id			= FALSE;
+
+	/**
+	 * Result ID
+	 *
+	 * @var	object|resource
+	 */
+	public $result_id		= FALSE;
+
+	/**
+	 * Debug flag
+	 *
+	 * Whether to display error messages.
+	 *
+	 * @var	bool
+	 */
+	public $db_debug		= FALSE;
+
+	/**
+	 * Benchmark time
+	 *
+	 * @var	int
+	 */
+	public $benchmark		= 0;
+
+	/**
+	 * Executed queries count
+	 *
+	 * @var	int
+	 */
+	public $query_count		= 0;
+
+	/**
+	 * Bind marker
+	 *
+	 * Character used to identify values in a prepared statement.
+	 *
+	 * @var	string
+	 */
+	public $bind_marker		= '?';
+
+	/**
+	 * Save queries flag
+	 *
+	 * Whether to keep an in-memory history of queries for debugging purposes.
+	 *
+	 * @var	bool
+	 */
+	public $save_queries		= TRUE;
+
+	/**
+	 * Queries list
+	 *
+	 * @see	CI_DB_driver::$save_queries
+	 * @var	string[]
+	 */
+	public $queries			= array();
+
+	/**
+	 * Query times
+	 *
+	 * A list of times that queries took to execute.
+	 *
+	 * @var	array
+	 */
+	public $query_times		= array();
+
+	/**
+	 * Data cache
+	 *
+	 * An internal generic value cache.
+	 *
+	 * @var	array
+	 */
+	public $data_cache		= array();
+
+	/**
+	 * Transaction enabled flag
+	 *
+	 * @var	bool
+	 */
+	public $trans_enabled		= TRUE;
+
+	/**
+	 * Strict transaction mode flag
+	 *
+	 * @var	bool
+	 */
+	public $trans_strict		= TRUE;
+
+	/**
+	 * Transaction depth level
+	 *
+	 * @var	int
+	 */
+	protected $_trans_depth		= 0;
+
+	/**
+	 * Transaction status flag
+	 *
+	 * Used with transactions to determine if a rollback should occur.
+	 *
+	 * @var	bool
+	 */
+	protected $_trans_status	= TRUE;
+
+	/**
+	 * Transaction failure flag
+	 *
+	 * Used with transactions to determine if a transaction has failed.
+	 *
+	 * @var	bool
+	 */
+	protected $_trans_failure	= FALSE;
+
+	/**
+	 * Cache On flag
+	 *
+	 * @var	bool
+	 */
+	public $cache_on		= FALSE;
+
+	/**
+	 * Cache directory path
+	 *
+	 * @var	bool
+	 */
+	public $cachedir		= '';
+
+	/**
+	 * Cache auto-delete flag
+	 *
+	 * @var	bool
+	 */
+	public $cache_autodel		= FALSE;
+
+	/**
+	 * DB Cache object
+	 *
+	 * @see	CI_DB_cache
+	 * @var	object
+	 */
+	public $CACHE;
+
+	/**
+	 * Protect identifiers flag
+	 *
+	 * @var	bool
+	 */
+	protected $_protect_identifiers		= TRUE;
+
+	/**
+	 * List of reserved identifiers
+	 *
+	 * Identifiers that must NOT be escaped.
+	 *
+	 * @var	string[]
+	 */
+	protected $_reserved_identifiers	= array('*');
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '"';
+
+	/**
+	 * ESCAPE statement string
+	 *
+	 * @var	string
+	 */
+	protected $_like_escape_str = " ESCAPE '%s' ";
+
+	/**
+	 * ESCAPE character
+	 *
+	 * @var	string
+	 */
+	protected $_like_escape_chr = '!';
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RAND()', 'RAND(%d)');
+
+	/**
+	 * COUNT string
+	 *
+	 * @used-by	CI_DB_driver::count_all()
+	 * @used-by	CI_DB_query_builder::count_all_results()
+	 *
+	 * @var	string
+	 */
+	protected $_count_string = 'SELECT COUNT(*) AS ';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		if (is_array($params))
+		{
+			foreach ($params as $key => $val)
+			{
+				$this->$key = $val;
+			}
+		}
+
+		log_message('info', 'Database Driver Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize Database Settings
+	 *
+	 * @return	void
+	 * @throws	RuntimeException	In case of failure
+	 */
+	public function initialize()
+	{
+		/* If an established connection is available, then there's
+		 * no need to connect and select the database.
+		 *
+		 * Depending on the database driver, conn_id can be either
+		 * boolean TRUE, a resource or an object.
+		 */
+		if ($this->conn_id)
+		{
+			return;
+		}
+
+		// ----------------------------------------------------------------
+
+		// Connect to the database and set the connection ID
+		$this->conn_id = $this->db_connect($this->pconnect);
+
+		// No connection resource? Check if there is a failover else throw an error
+		if ( ! $this->conn_id)
+		{
+			// Check if there is a failover set
+			if ( ! empty($this->failover) && is_array($this->failover))
+			{
+				// Go over all the failovers
+				foreach ($this->failover as $failover)
+				{
+					// Replace the current settings with those of the failover
+					foreach ($failover as $key => $val)
+					{
+						$this->$key = $val;
+					}
+
+					// Try to connect
+					$this->conn_id = $this->db_connect($this->pconnect);
+
+					// If a connection is made break the foreach loop
+					if ($this->conn_id)
+					{
+						break;
+					}
+				}
+			}
+
+			// We still don't have a connection?
+			if ( ! $this->conn_id)
+			{
+				throw new RuntimeException('Unable to connect to the database.');
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * DB connect
+	 *
+	 * This is just a dummy method that all drivers will override.
+	 *
+	 * @return	mixed
+	 */
+	public function db_connect()
+	{
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Persistent database connection
+	 *
+	 * @return	mixed
+	 */
+	public function db_pconnect()
+	{
+		return $this->db_connect(TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout.
+	 *
+	 * This is just a dummy method to allow drivers without such
+	 * functionality to not declare it, while others will override it.
+	 *
+	 * @return	void
+	 */
+	public function reconnect()
+	{
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select database
+	 *
+	 * This is just a dummy method to allow drivers without such
+	 * functionality to not declare it, while others will override it.
+	 *
+	 * @return	bool
+	 */
+	public function db_select()
+	{
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Last error
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => NULL, 'message' => NULL);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The name of the platform in use (mysql, mssql, etc...)
+	 *
+	 * @return	string
+	 */
+	public function platform()
+	{
+		return $this->dbdriver;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * Returns a string containing the version of the database being used.
+	 * Most drivers will override this method.
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if (FALSE === ($sql = $this->_version()))
+		{
+			return ($this->db_debug) ? $this->display_error('db_unsupported_function') : FALSE;
+		}
+
+		$query = $this->query($sql)->row();
+		return $this->data_cache['version'] = $query->ver;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Version number query string
+	 *
+	 * @return	string
+	 */
+	protected function _version()
+	{
+		return 'SELECT VERSION() AS ver';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * Accepts an SQL string as input and returns a result object upon
+	 * successful execution of a "read" type query. Returns boolean TRUE
+	 * upon successful execution of a "write" type query. Returns boolean
+	 * FALSE upon failure, and if the $db_debug variable is set to TRUE
+	 * will raise an error.
+	 *
+	 * @param	string	$sql
+	 * @param	array	$binds = FALSE		An array of binding data
+	 * @param	bool	$return_object = NULL
+	 * @return	mixed
+	 */
+	public function query($sql, $binds = FALSE, $return_object = NULL)
+	{
+		if ($sql === '')
+		{
+			log_message('error', 'Invalid query: '.$sql);
+			return ($this->db_debug) ? $this->display_error('db_invalid_query') : FALSE;
+		}
+		elseif ( ! is_bool($return_object))
+		{
+			$return_object = ! $this->is_write_type($sql);
+		}
+
+		// Verify table prefix and replace if necessary
+		if ($this->dbprefix !== '' && $this->swap_pre !== '' && $this->dbprefix !== $this->swap_pre)
+		{
+			$sql = preg_replace('/(\W)'.$this->swap_pre.'(\S+?)/', '\\1'.$this->dbprefix.'\\2', $sql);
+		}
+
+		// Compile binds if needed
+		if ($binds !== FALSE)
+		{
+			$sql = $this->compile_binds($sql, $binds);
+		}
+
+		// Is query caching enabled? If the query is a "read type"
+		// we will load the caching class and return the previously
+		// cached query if it exists
+		if ($this->cache_on === TRUE && $return_object === TRUE && $this->_cache_init())
+		{
+			if (FALSE !== ($cache = $this->CACHE->read($sql)))
+			{
+				return $cache;
+			}
+		}
+
+		// Save the query for debugging
+		if ($this->save_queries === TRUE)
+		{
+			$this->queries[] = $sql;
+		}
+
+		// Start the Query Timer
+		$time_start = microtime(TRUE);
+
+		// Run the Query
+		if (FALSE === ($this->result_id = $this->simple_query($sql)))
+		{
+			if ($this->save_queries === TRUE)
+			{
+				$this->query_times[] = 0;
+			}
+
+			// This will trigger a rollback if transactions are being used
+			if ($this->_trans_depth !== 0)
+			{
+				$this->_trans_status = FALSE;
+			}
+
+			// Grab the error now, as we might run some additional queries before displaying the error
+			$error = $this->error();
+
+			// Log errors
+			log_message('error', 'Query error: '.$error['message'].' - Invalid query: '.$sql);
+
+			if ($this->db_debug)
+			{
+				// We call this function in order to roll-back queries
+				// if transactions are enabled. If we don't call this here
+				// the error message will trigger an exit, causing the
+				// transactions to remain in limbo.
+				while ($this->_trans_depth !== 0)
+				{
+					$trans_depth = $this->_trans_depth;
+					$this->trans_complete();
+					if ($trans_depth === $this->_trans_depth)
+					{
+						log_message('error', 'Database: Failure during an automated transaction commit/rollback!');
+						break;
+					}
+				}
+
+				// Display errors
+				return $this->display_error(array('Error Number: '.$error['code'], $error['message'], $sql));
+			}
+
+			return FALSE;
+		}
+
+		// Stop and aggregate the query time results
+		$time_end = microtime(TRUE);
+		$this->benchmark += $time_end - $time_start;
+
+		if ($this->save_queries === TRUE)
+		{
+			$this->query_times[] = $time_end - $time_start;
+		}
+
+		// Increment the query counter
+		$this->query_count++;
+
+		// Will we have a result object instantiated? If not - we'll simply return TRUE
+		if ($return_object !== TRUE)
+		{
+			// If caching is enabled we'll auto-cleanup any existing files related to this particular URI
+			if ($this->cache_on === TRUE && $this->cache_autodel === TRUE && $this->_cache_init())
+			{
+				$this->CACHE->delete();
+			}
+
+			return TRUE;
+		}
+
+		// Instantiate the driver-specific result class
+		$driver	= 'CI_DB_'.$this->dbdriver.'_result';
+		$RES    = new $driver($this);
+
+		// Is query caching enabled? If so, we'll serialize the
+		// result object and save it to a cache file.
+		if ($this->cache_on === TRUE && $this->_cache_init())
+		{
+			// We'll create a new instance of the result object
+			// only without the platform specific driver since
+			// we can't use it with cached data (the query result
+			// resource ID won't be any good once we've cached the
+			// result object, so we'll have to compile the data
+			// and save it)
+			$CR = new CI_DB_result($this);
+			$CR->result_object	= $RES->result_object();
+			$CR->result_array	= $RES->result_array();
+			$CR->num_rows		= $RES->num_rows();
+
+			// Reset these since cached objects can not utilize resource IDs.
+			$CR->conn_id		= NULL;
+			$CR->result_id		= NULL;
+
+			$this->CACHE->write($sql, $CR);
+		}
+
+		return $RES;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Simple Query
+	 * This is a simplified version of the query() function. Internally
+	 * we only use it when running transaction commands since they do
+	 * not require all the features of the main query() function.
+	 *
+	 * @param	string	the sql query
+	 * @return	mixed
+	 */
+	public function simple_query($sql)
+	{
+		empty($this->conn_id) && $this->initialize();
+		return $this->_execute($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Disable Transactions
+	 * This permits transactions to be disabled at run-time.
+	 *
+	 * @return	void
+	 */
+	public function trans_off()
+	{
+		$this->trans_enabled = FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Enable/disable Transaction Strict Mode
+	 *
+	 * When strict mode is enabled, if you are running multiple groups of
+	 * transactions, if one group fails all subsequent groups will be
+	 * rolled back.
+	 *
+	 * If strict mode is disabled, each group is treated autonomously,
+	 * meaning a failure of one group will not affect any others
+	 *
+	 * @param	bool	$mode = TRUE
+	 * @return	void
+	 */
+	public function trans_strict($mode = TRUE)
+	{
+		$this->trans_strict = is_bool($mode) ? $mode : TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Start Transaction
+	 *
+	 * @param	bool	$test_mode = FALSE
+	 * @return	bool
+	 */
+	public function trans_start($test_mode = FALSE)
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return FALSE;
+		}
+
+		return $this->trans_begin($test_mode);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Complete Transaction
+	 *
+	 * @return	bool
+	 */
+	public function trans_complete()
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return FALSE;
+		}
+
+		// The query() function will set this flag to FALSE in the event that a query failed
+		if ($this->_trans_status === FALSE OR $this->_trans_failure === TRUE)
+		{
+			$this->trans_rollback();
+
+			// If we are NOT running in strict mode, we will reset
+			// the _trans_status flag so that subsequent groups of
+			// transactions will be permitted.
+			if ($this->trans_strict === FALSE)
+			{
+				$this->_trans_status = TRUE;
+			}
+
+			log_message('debug', 'DB Transaction Failure');
+			return FALSE;
+		}
+
+		return $this->trans_commit();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Lets you retrieve the transaction flag to determine if it has failed
+	 *
+	 * @return	bool
+	 */
+	public function trans_status()
+	{
+		return $this->_trans_status;
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns TRUE if a transaction is currently active
+	 *
+	 * @return	bool
+	 */
+	public function trans_active()
+	{
+		return (bool) $this->_trans_depth;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @param	bool	$test_mode
+	 * @return	bool
+	 */
+	public function trans_begin($test_mode = FALSE)
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return FALSE;
+		}
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		elseif ($this->_trans_depth > 0)
+		{
+			$this->_trans_depth++;
+			return TRUE;
+		}
+
+		// Reset the transaction failure flag.
+		// If the $test_mode flag is set to TRUE transactions will be rolled back
+		// even if the queries produce a successful result.
+		$this->_trans_failure = ($test_mode === TRUE);
+
+		if ($this->_trans_begin())
+		{
+			$this->_trans_status = TRUE;
+			$this->_trans_depth++;
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	public function trans_commit()
+	{
+		if ( ! $this->trans_enabled OR $this->_trans_depth === 0)
+		{
+			return FALSE;
+		}
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		elseif ($this->_trans_depth > 1 OR $this->_trans_commit())
+		{
+			$this->_trans_depth--;
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	public function trans_rollback()
+	{
+		if ( ! $this->trans_enabled OR $this->_trans_depth === 0)
+		{
+			return FALSE;
+		}
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		elseif ($this->_trans_depth > 1 OR $this->_trans_rollback())
+		{
+			$this->_trans_depth--;
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile Bindings
+	 *
+	 * @param	string	the sql statement
+	 * @param	array	an array of bind data
+	 * @return	string
+	 */
+	public function compile_binds($sql, $binds)
+	{
+		if (empty($this->bind_marker) OR strpos($sql, $this->bind_marker) === FALSE)
+		{
+			return $sql;
+		}
+		elseif ( ! is_array($binds))
+		{
+			$binds = array($binds);
+			$bind_count = 1;
+		}
+		else
+		{
+			// Make sure we're using numeric keys
+			$binds = array_values($binds);
+			$bind_count = count($binds);
+		}
+
+		// We'll need the marker length later
+		$ml = strlen($this->bind_marker);
+
+		// Make sure not to replace a chunk inside a string that happens to match the bind marker
+		if ($c = preg_match_all("/'[^']*'|\"[^\"]*\"/i", $sql, $matches))
+		{
+			$c = preg_match_all('/'.preg_quote($this->bind_marker, '/').'/i',
+				str_replace($matches[0],
+					str_replace($this->bind_marker, str_repeat(' ', $ml), $matches[0]),
+					$sql, $c),
+				$matches, PREG_OFFSET_CAPTURE);
+
+			// Bind values' count must match the count of markers in the query
+			if ($bind_count !== $c)
+			{
+				return $sql;
+			}
+		}
+		elseif (($c = preg_match_all('/'.preg_quote($this->bind_marker, '/').'/i', $sql, $matches, PREG_OFFSET_CAPTURE)) !== $bind_count)
+		{
+			return $sql;
+		}
+
+		do
+		{
+			$c--;
+			$escaped_value = $this->escape($binds[$c]);
+			if (is_array($escaped_value))
+			{
+				$escaped_value = '('.implode(',', $escaped_value).')';
+			}
+			$sql = substr_replace($sql, $escaped_value, $matches[0][$c][1], $ml);
+		}
+		while ($c !== 0);
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determines if a query is a "write" type.
+	 *
+	 * @param	string	An SQL query string
+	 * @return	bool
+	 */
+	public function is_write_type($sql)
+	{
+		return (bool) preg_match('/^\s*"?(SET|INSERT|UPDATE|DELETE|REPLACE|CREATE|DROP|TRUNCATE|LOAD|COPY|ALTER|RENAME|GRANT|REVOKE|LOCK|UNLOCK|REINDEX|MERGE)\s/i', $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Calculate the aggregate query elapsed time
+	 *
+	 * @param	int	The number of decimal places
+	 * @return	string
+	 */
+	public function elapsed_time($decimals = 6)
+	{
+		return number_format($this->benchmark, $decimals);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the total number of queries
+	 *
+	 * @return	int
+	 */
+	public function total_queries()
+	{
+		return $this->query_count;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the last query that was executed
+	 *
+	 * @return	string
+	 */
+	public function last_query()
+	{
+		return end($this->queries);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Smart" Escape String
+	 *
+	 * Escapes data based on type
+	 * Sets boolean and null types
+	 *
+	 * @param	string
+	 * @return	mixed
+	 */
+	public function escape($str)
+	{
+		if (is_array($str))
+		{
+			$str = array_map(array(&$this, 'escape'), $str);
+			return $str;
+		}
+		elseif (is_string($str) OR (is_object($str) && method_exists($str, '__toString')))
+		{
+			return "'".$this->escape_str($str)."'";
+		}
+		elseif (is_bool($str))
+		{
+			return ($str === FALSE) ? 0 : 1;
+		}
+		elseif ($str === NULL)
+		{
+			return 'NULL';
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape String
+	 *
+	 * @param	string|string[]	$str	Input string
+	 * @param	bool	$like	Whether or not the string will be used in a LIKE condition
+	 * @return	string
+	 */
+	public function escape_str($str, $like = FALSE)
+	{
+		if (is_array($str))
+		{
+			foreach ($str as $key => $val)
+			{
+				$str[$key] = $this->escape_str($val, $like);
+			}
+
+			return $str;
+		}
+
+		$str = $this->_escape_str($str);
+
+		// escape LIKE condition wildcards
+		if ($like === TRUE)
+		{
+			return str_replace(
+				array($this->_like_escape_chr, '%', '_'),
+				array($this->_like_escape_chr.$this->_like_escape_chr, $this->_like_escape_chr.'%', $this->_like_escape_chr.'_'),
+				$str
+			);
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape LIKE String
+	 *
+	 * Calls the individual driver for platform
+	 * specific escaping for LIKE conditions
+	 *
+	 * @param	string|string[]
+	 * @return	mixed
+	 */
+	public function escape_like_str($str)
+	{
+		return $this->escape_str($str, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		return str_replace("'", "''", remove_invisible_characters($str, FALSE));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Primary
+	 *
+	 * Retrieves the primary key. It assumes that the row in the first
+	 * position is the primary key
+	 *
+	 * @param	string	$table	Table name
+	 * @return	string
+	 */
+	public function primary($table)
+	{
+		$fields = $this->list_fields($table);
+		return is_array($fields) ? current($fields) : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Count All" query
+	 *
+	 * Generates a platform-specific query string that counts all records in
+	 * the specified database
+	 *
+	 * @param	string
+	 * @return	int
+	 */
+	public function count_all($table = '')
+	{
+		if ($table === '')
+		{
+			return 0;
+		}
+
+		$query = $this->query($this->_count_string.$this->escape_identifiers('numrows').' FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE));
+		if ($query->num_rows() === 0)
+		{
+			return 0;
+		}
+
+		$query = $query->row();
+		$this->_reset_select();
+		return (int) $query->numrows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an array of table names
+	 *
+	 * @param	string	$constrain_by_prefix = FALSE
+	 * @return	array
+	 */
+	public function list_tables($constrain_by_prefix = FALSE)
+	{
+		// Is there a cached result?
+		if (isset($this->data_cache['table_names']))
+		{
+			return $this->data_cache['table_names'];
+		}
+
+		if (FALSE === ($sql = $this->_list_tables($constrain_by_prefix)))
+		{
+			return ($this->db_debug) ? $this->display_error('db_unsupported_function') : FALSE;
+		}
+
+		$this->data_cache['table_names'] = array();
+		$query = $this->query($sql);
+
+		foreach ($query->result_array() as $row)
+		{
+			// Do we know from which column to get the table name?
+			if ( ! isset($key))
+			{
+				if (isset($row['table_name']))
+				{
+					$key = 'table_name';
+				}
+				elseif (isset($row['TABLE_NAME']))
+				{
+					$key = 'TABLE_NAME';
+				}
+				else
+				{
+					/* We have no other choice but to just get the first element's key.
+					 * Due to array_shift() accepting its argument by reference, if
+					 * E_STRICT is on, this would trigger a warning. So we'll have to
+					 * assign it first.
+					 */
+					$key = array_keys($row);
+					$key = array_shift($key);
+				}
+			}
+
+			$this->data_cache['table_names'][] = $row[$key];
+		}
+
+		return $this->data_cache['table_names'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determine if a particular table exists
+	 *
+	 * @param	string	$table_name
+	 * @return	bool
+	 */
+	public function table_exists($table_name)
+	{
+		return in_array($this->protect_identifiers($table_name, TRUE, FALSE, FALSE), $this->list_tables());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * @param	string	$table	Table name
+	 * @return	array
+	 */
+	public function list_fields($table)
+	{
+		if (FALSE === ($sql = $this->_list_columns($table)))
+		{
+			return ($this->db_debug) ? $this->display_error('db_unsupported_function') : FALSE;
+		}
+
+		$query = $this->query($sql);
+		$fields = array();
+
+		foreach ($query->result_array() as $row)
+		{
+			// Do we know from where to get the column's name?
+			if ( ! isset($key))
+			{
+				if (isset($row['column_name']))
+				{
+					$key = 'column_name';
+				}
+				elseif (isset($row['COLUMN_NAME']))
+				{
+					$key = 'COLUMN_NAME';
+				}
+				else
+				{
+					// We have no other choice but to just get the first element's key.
+					$key = key($row);
+				}
+			}
+
+			$fields[] = $row[$key];
+		}
+
+		return $fields;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determine if a particular field exists
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	public function field_exists($field_name, $table_name)
+	{
+		return in_array($field_name, $this->list_fields($table_name));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table	the table name
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$query = $this->query($this->_field_data($this->protect_identifiers($table, TRUE, NULL, FALSE)));
+		return ($query) ? $query->field_data() : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape the SQL Identifiers
+	 *
+	 * This function escapes column and table names
+	 *
+	 * @param	mixed	$item	Identifier to escape
+	 * @param	bool	$split	Whether to split identifiers when a dot is encountered
+	 * @return	mixed
+	 */
+	public function escape_identifiers($item, $split = TRUE)
+	{
+		if ($this->_escape_char === '' OR empty($item) OR in_array($item, $this->_reserved_identifiers))
+		{
+			return $item;
+		}
+		elseif (is_array($item))
+		{
+			foreach ($item as $key => $value)
+			{
+				$item[$key] = $this->escape_identifiers($value);
+			}
+
+			return $item;
+		}
+		// Avoid breaking functions and literal values inside queries
+		elseif (ctype_digit($item) OR $item[0] === "'" OR ($this->_escape_char !== '"' && $item[0] === '"') OR strpos($item, '(') !== FALSE)
+		{
+			return $item;
+		}
+
+		static $preg_ec;
+
+		if (empty($preg_ec))
+		{
+			if (is_array($this->_escape_char))
+			{
+				$preg_ec = array(
+					preg_quote($this->_escape_char[0]),
+					preg_quote($this->_escape_char[1]),
+					$this->_escape_char[0],
+					$this->_escape_char[1]
+				);
+			}
+			else
+			{
+				$preg_ec[0] = $preg_ec[1] = preg_quote($this->_escape_char);
+				$preg_ec[2] = $preg_ec[3] = $this->_escape_char;
+			}
+		}
+
+		foreach ($this->_reserved_identifiers as $id)
+		{
+			if (strpos($item, '.'.$id) !== FALSE)
+			{
+				return preg_replace('#'.$preg_ec[0].'?([^'.$preg_ec[1].'\.]+)'.$preg_ec[1].'?\.#i', $preg_ec[2].'$1'.$preg_ec[3].'.', $item);
+			}
+		}
+
+		$dot = ($split !== FALSE) ? '\.' : '';
+
+		return preg_replace('#'.$preg_ec[0].'?([^'.$preg_ec[1].$dot.']+)'.$preg_ec[1].'?(\.)?#i', $preg_ec[2].'$1'.$preg_ec[3].'$2', $item);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate an insert string
+	 *
+	 * @param	string	the table upon which the query will be performed
+	 * @param	array	an associative array data of key/values
+	 * @return	string
+	 */
+	public function insert_string($table, $data)
+	{
+		$fields = $values = array();
+
+		foreach ($data as $key => $val)
+		{
+			$fields[] = $this->escape_identifiers($key);
+			$values[] = $this->escape($val);
+		}
+
+		return $this->_insert($this->protect_identifiers($table, TRUE, NULL, FALSE), $fields, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data
+	 *
+	 * @param	string	the table name
+	 * @param	array	the insert keys
+	 * @param	array	the insert values
+	 * @return	string
+	 */
+	protected function _insert($table, $keys, $values)
+	{
+		return 'INSERT INTO '.$table.' ('.implode(', ', $keys).') VALUES ('.implode(', ', $values).')';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate an update string
+	 *
+	 * @param	string	the table upon which the query will be performed
+	 * @param	array	an associative array data of key/values
+	 * @param	mixed	the "where" statement
+	 * @return	string
+	 */
+	public function update_string($table, $data, $where)
+	{
+		if (empty($where))
+		{
+			return FALSE;
+		}
+
+		$this->where($where);
+
+		$fields = array();
+		foreach ($data as $key => $val)
+		{
+			$fields[$this->protect_identifiers($key)] = $this->escape($val);
+		}
+
+		$sql = $this->_update($this->protect_identifiers($table, TRUE, NULL, FALSE), $fields);
+		$this->_reset_write();
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	the table name
+	 * @param	array	the update data
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		foreach ($values as $key => $val)
+		{
+			$valstr[] = $key.' = '.$val;
+		}
+
+		return 'UPDATE '.$table.' SET '.implode(', ', $valstr)
+			.$this->_compile_wh('qb_where')
+			.$this->_compile_order_by()
+			.($this->qb_limit !== FALSE ? ' LIMIT '.$this->qb_limit : '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Tests whether the string has an SQL operator
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	protected function _has_operator($str)
+	{
+		return (bool) preg_match('/(<|>|!|=|\sIS NULL|\sIS NOT NULL|\sEXISTS|\sBETWEEN|\sLIKE|\sIN\s*\(|\s)/i', trim($str));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the SQL string operator
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _get_operator($str)
+	{
+		static $_operators;
+
+		if (empty($_operators))
+		{
+			$_les = ($this->_like_escape_str !== '')
+				? '\s+'.preg_quote(trim(sprintf($this->_like_escape_str, $this->_like_escape_chr)), '/')
+				: '';
+			$_operators = array(
+				'\s*(?:<|>|!)?=\s*',             // =, <=, >=, !=
+				'\s*<>?\s*',                     // <, <>
+				'\s*>\s*',                       // >
+				'\s+IS NULL',                    // IS NULL
+				'\s+IS NOT NULL',                // IS NOT NULL
+				'\s+EXISTS\s*\(.*\)',        // EXISTS(sql)
+				'\s+NOT EXISTS\s*\(.*\)',    // NOT EXISTS(sql)
+				'\s+BETWEEN\s+',                 // BETWEEN value AND value
+				'\s+IN\s*\(.*\)',            // IN(list)
+				'\s+NOT IN\s*\(.*\)',        // NOT IN (list)
+				'\s+LIKE\s+\S.*('.$_les.')?',    // LIKE 'expr'[ ESCAPE '%s']
+				'\s+NOT LIKE\s+\S.*('.$_les.')?' // NOT LIKE 'expr'[ ESCAPE '%s']
+			);
+
+		}
+
+		return preg_match('/'.implode('|', $_operators).'/i', $str, $match)
+			? $match[0] : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Enables a native PHP function to be run, using a platform agnostic wrapper.
+	 *
+	 * @param	string	$function	Function name
+	 * @return	mixed
+	 */
+	public function call_function($function)
+	{
+		$driver = ($this->dbdriver === 'postgre') ? 'pg_' : $this->dbdriver.'_';
+
+		if (FALSE === strpos($driver, $function))
+		{
+			$function = $driver.$function;
+		}
+
+		if ( ! function_exists($function))
+		{
+			return ($this->db_debug) ? $this->display_error('db_unsupported_function') : FALSE;
+		}
+
+		return (func_num_args() > 1)
+			? call_user_func_array($function, array_slice(func_get_args(), 1))
+			: call_user_func($function);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Cache Directory Path
+	 *
+	 * @param	string	the path to the cache directory
+	 * @return	void
+	 */
+	public function cache_set_path($path = '')
+	{
+		$this->cachedir = $path;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Enable Query Caching
+	 *
+	 * @return	bool	cache_on value
+	 */
+	public function cache_on()
+	{
+		return $this->cache_on = TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Disable Query Caching
+	 *
+	 * @return	bool	cache_on value
+	 */
+	public function cache_off()
+	{
+		return $this->cache_on = FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete the cache files associated with a particular URI
+	 *
+	 * @param	string	$segment_one = ''
+	 * @param	string	$segment_two = ''
+	 * @return	bool
+	 */
+	public function cache_delete($segment_one = '', $segment_two = '')
+	{
+		return $this->_cache_init()
+			? $this->CACHE->delete($segment_one, $segment_two)
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete All cache files
+	 *
+	 * @return	bool
+	 */
+	public function cache_delete_all()
+	{
+		return $this->_cache_init()
+			? $this->CACHE->delete_all()
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize the Cache Class
+	 *
+	 * @return	bool
+	 */
+	protected function _cache_init()
+	{
+		if ( ! class_exists('CI_DB_Cache', FALSE))
+		{
+			require_once(BASEPATH.'database/DB_cache.php');
+		}
+		elseif (is_object($this->CACHE))
+		{
+			return TRUE;
+		}
+
+		$this->CACHE = new CI_DB_Cache($this); // pass db object to support multiple db connections and returned db objects
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	public function close()
+	{
+		if ($this->conn_id)
+		{
+			$this->_close();
+			$this->conn_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * This method would be overridden by most of the drivers.
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		$this->conn_id = FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Display an error message
+	 *
+	 * @param	string	the error message
+	 * @param	string	any "swap" values
+	 * @param	bool	whether to localize the message
+	 * @return	string	sends the application/views/errors/error_db.php template
+	 */
+	public function display_error($error = '', $swap = '', $native = FALSE)
+	{
+		$LANG =& load_class('Lang', 'core');
+		$LANG->load('db');
+
+		$heading = $LANG->line('db_error_heading');
+
+		if ($native === TRUE)
+		{
+			$message = (array) $error;
+		}
+		else
+		{
+			$message = is_array($error) ? $error : array(str_replace('%s', $swap, $LANG->line($error)));
+		}
+
+		// Find the most likely culprit of the error by going through
+		// the backtrace until the source file is no longer in the
+		// database folder.
+		$trace = debug_backtrace();
+		foreach ($trace as $call)
+		{
+			if (isset($call['file'], $call['class']))
+			{
+				// We'll need this on Windows, as APPPATH and BASEPATH will always use forward slashes
+				if (DIRECTORY_SEPARATOR !== '/')
+				{
+					$call['file'] = str_replace('\\', '/', $call['file']);
+				}
+
+				if (strpos($call['file'], BASEPATH.'database') === FALSE && strpos($call['class'], 'Loader') === FALSE)
+				{
+					// Found it - use a relative path for safety
+					$message[] = 'Filename: '.str_replace(array(APPPATH, BASEPATH), '', $call['file']);
+					$message[] = 'Line Number: '.$call['line'];
+					break;
+				}
+			}
+		}
+
+		$error =& load_class('Exceptions', 'core');
+		echo $error->show_error($heading, $message, 'error_db');
+		exit(8); // EXIT_DATABASE
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Protect Identifiers
+	 *
+	 * This function is used extensively by the Query Builder class, and by
+	 * a couple functions in this class.
+	 * It takes a column or table name (optionally with an alias) and inserts
+	 * the table prefix onto it. Some logic is necessary in order to deal with
+	 * column names that include the path. Consider a query like this:
+	 *
+	 * SELECT hostname.database.table.column AS c FROM hostname.database.table
+	 *
+	 * Or a query with aliasing:
+	 *
+	 * SELECT m.member_id, m.member_name FROM members AS m
+	 *
+	 * Since the column name can include up to four segments (host, DB, table, column)
+	 * or also have an alias prefix, we need to do a bit of work to figure this out and
+	 * insert the table prefix (if it exists) in the proper position, and escape only
+	 * the correct identifiers.
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @param	mixed
+	 * @param	bool
+	 * @return	string
+	 */
+	public function protect_identifiers($item, $prefix_single = FALSE, $protect_identifiers = NULL, $field_exists = TRUE)
+	{
+		if ( ! is_bool($protect_identifiers))
+		{
+			$protect_identifiers = $this->_protect_identifiers;
+		}
+
+		if (is_array($item))
+		{
+			$escaped_array = array();
+			foreach ($item as $k => $v)
+			{
+				$escaped_array[$this->protect_identifiers($k)] = $this->protect_identifiers($v, $prefix_single, $protect_identifiers, $field_exists);
+			}
+
+			return $escaped_array;
+		}
+
+		// This is basically a bug fix for queries that use MAX, MIN, etc.
+		// If a parenthesis is found we know that we do not need to
+		// escape the data or add a prefix. There's probably a more graceful
+		// way to deal with this, but I'm not thinking of it -- Rick
+		//
+		// Added exception for single quotes as well, we don't want to alter
+		// literal strings. -- Narf
+		if (strcspn($item, "()'") !== strlen($item))
+		{
+			return $item;
+		}
+
+		// Convert tabs or multiple spaces into single spaces
+		$item = preg_replace('/\s+/', ' ', trim($item));
+
+		// If the item has an alias declaration we remove it and set it aside.
+		// Note: strripos() is used in order to support spaces in table names
+		if ($offset = strripos($item, ' AS '))
+		{
+			$alias = ($protect_identifiers)
+				? substr($item, $offset, 4).$this->escape_identifiers(substr($item, $offset + 4), FALSE)
+				: substr($item, $offset);
+			$item = substr($item, 0, $offset);
+		}
+		elseif ($offset = strrpos($item, ' '))
+		{
+			$alias = ($protect_identifiers)
+				? ' '.$this->escape_identifiers(substr($item, $offset + 1), FALSE)
+				: substr($item, $offset);
+			$item = substr($item, 0, $offset);
+		}
+		else
+		{
+			$alias = '';
+		}
+
+		// Break the string apart if it contains periods, then insert the table prefix
+		// in the correct location, assuming the period doesn't indicate that we're dealing
+		// with an alias. While we're at it, we will escape the components
+		if (strpos($item, '.') !== FALSE)
+		{
+			$parts = explode('.', $item);
+
+			// Does the first segment of the exploded item match
+			// one of the aliases previously identified? If so,
+			// we have nothing more to do other than escape the item
+			//
+			// NOTE: The ! empty() condition prevents this method
+			//       from breaking when QB isn't enabled.
+			if ( ! empty($this->qb_aliased_tables) && in_array($parts[0], $this->qb_aliased_tables))
+			{
+				if ($protect_identifiers === TRUE)
+				{
+					foreach ($parts as $key => $val)
+					{
+						if ( ! in_array($val, $this->_reserved_identifiers))
+						{
+							$parts[$key] = $this->escape_identifiers($val);
+						}
+					}
+
+					$item = implode('.', $parts);
+				}
+
+				return $item.$alias;
+			}
+
+			// Is there a table prefix defined in the config file? If not, no need to do anything
+			if ($this->dbprefix !== '')
+			{
+				// We now add the table prefix based on some logic.
+				// Do we have 4 segments (hostname.database.table.column)?
+				// If so, we add the table prefix to the column name in the 3rd segment.
+				if (isset($parts[3]))
+				{
+					$i = 2;
+				}
+				// Do we have 3 segments (database.table.column)?
+				// If so, we add the table prefix to the column name in 2nd position
+				elseif (isset($parts[2]))
+				{
+					$i = 1;
+				}
+				// Do we have 2 segments (table.column)?
+				// If so, we add the table prefix to the column name in 1st segment
+				else
+				{
+					$i = 0;
+				}
+
+				// This flag is set when the supplied $item does not contain a field name.
+				// This can happen when this function is being called from a JOIN.
+				if ($field_exists === FALSE)
+				{
+					$i++;
+				}
+
+				// dbprefix may've already been applied, with or without the identifier escaped
+				$ec = '(?<ec>'.preg_quote(is_array($this->_escape_char) ? $this->_escape_char[0] : $this->_escape_char).')?';
+				isset($ec[0]) && $ec .= '?'; // Just in case someone has disabled escaping by forcing an empty escape character
+
+				// Verify table prefix and replace if necessary
+				if ($this->swap_pre !== '' && preg_match('#^'.$ec.preg_quote($this->swap_pre).'#', $parts[$i]))
+				{
+					$parts[$i] = preg_replace('#^'.$ec.preg_quote($this->swap_pre).'(\S+?)#', '\\1'.$this->dbprefix.'\\2', $parts[$i]);
+				}
+				// We only add the table prefix if it does not already exist
+				else
+				{
+					preg_match('#^'.$ec.preg_quote($this->dbprefix).'#', $parts[$i]) OR $parts[$i] = $this->dbprefix.$parts[$i];
+				}
+
+				// Put the parts back together
+				$item = implode('.', $parts);
+			}
+
+			if ($protect_identifiers === TRUE)
+			{
+				$item = $this->escape_identifiers($item);
+			}
+
+			return $item.$alias;
+		}
+
+		// Is there a table prefix? If not, no need to insert it
+		if ($this->dbprefix !== '')
+		{
+			// Verify table prefix and replace if necessary
+			if ($this->swap_pre !== '' && strpos($item, $this->swap_pre) === 0)
+			{
+				$item = preg_replace('/^'.$this->swap_pre.'(\S+?)/', $this->dbprefix.'\\1', $item);
+			}
+			// Do we prefix an item with no segments?
+			elseif ($prefix_single === TRUE && strpos($item, $this->dbprefix) !== 0)
+			{
+				$item = $this->dbprefix.$item;
+			}
+		}
+
+		if ($protect_identifiers === TRUE && ! in_array($item, $this->_reserved_identifiers))
+		{
+			$item = $this->escape_identifiers($item);
+		}
+
+		return $item.$alias;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Dummy method that allows Query Builder class to be disabled
+	 * and keep count_all() working.
+	 *
+	 * @return	void
+	 */
+	protected function _reset_select()
+	{
+	}
+
+}
diff --git a/system/database/DB_forge.php b/system/database/DB_forge.php
new file mode 100644
index 00000000..ce9b30d8
--- /dev/null
+++ b/system/database/DB_forge.php
@@ -0,0 +1,1045 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Database Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+abstract class CI_DB_forge {
+
+	/**
+	 * Database object
+	 *
+	 * @var	object
+	 */
+	protected $db;
+
+	/**
+	 * Fields data
+	 *
+	 * @var	array
+	 */
+	public $fields		= array();
+
+	/**
+	 * Keys data
+	 *
+	 * @var	array
+	 */
+	public $keys		= array();
+
+	/**
+	 * Primary Keys data
+	 *
+	 * @var	array
+	 */
+	public $primary_keys	= array();
+
+	/**
+	 * Database character set
+	 *
+	 * @var	string
+	 */
+	public $db_char_set	= '';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= 'CREATE DATABASE %s';
+
+	/**
+	 * DROP DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_database	= 'DROP DATABASE %s';
+
+	/**
+	 * CREATE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table	= "%s %s (%s\n)";
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= 'CREATE TABLE IF NOT EXISTS';
+
+	/**
+	 * CREATE TABLE keys flag
+	 *
+	 * Whether table keys are created from within the
+	 * CREATE TABLE statement.
+	 *
+	 * @var	bool
+	 */
+	protected $_create_table_keys	= FALSE;
+
+	/**
+	 * DROP TABLE IF EXISTS statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
+
+	/**
+	 * RENAME TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_rename_table	= 'ALTER TABLE %s RENAME TO %s;';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= TRUE;
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= '';
+
+	/**
+	 * DEFAULT value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_default		= ' DEFAULT ';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$db	Database object
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		$this->db =& $db;
+		log_message('info', 'Database Forge Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create database
+	 *
+	 * @param	string	$db_name
+	 * @return	bool
+	 */
+	public function create_database($db_name)
+	{
+		if ($this->_create_database === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+		elseif ( ! $this->db->query(sprintf($this->_create_database, $this->db->escape_identifiers($db_name), $this->db->char_set, $this->db->dbcollat)))
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unable_to_drop') : FALSE;
+		}
+
+		if ( ! empty($this->db->data_cache['db_names']))
+		{
+			$this->db->data_cache['db_names'][] = $db_name;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @param	string	$db_name
+	 * @return	bool
+	 */
+	public function drop_database($db_name)
+	{
+		if ($this->_drop_database === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+		elseif ( ! $this->db->query(sprintf($this->_drop_database, $this->db->escape_identifiers($db_name))))
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unable_to_drop') : FALSE;
+		}
+
+		if ( ! empty($this->db->data_cache['db_names']))
+		{
+			$key = array_search(strtolower($db_name), array_map('strtolower', $this->db->data_cache['db_names']), TRUE);
+			if ($key !== FALSE)
+			{
+				unset($this->db->data_cache['db_names'][$key]);
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Key
+	 *
+	 * @param	string	$key
+	 * @param	bool	$primary
+	 * @return	CI_DB_forge
+	 */
+	public function add_key($key, $primary = FALSE)
+	{
+		// DO NOT change this! This condition is only applicable
+		// for PRIMARY keys because you can only have one such,
+		// and therefore all fields you add to it will be included
+		// in the same, composite PRIMARY KEY.
+		//
+		// It's not the same for regular indexes.
+		if ($primary === TRUE && is_array($key))
+		{
+			foreach ($key as $one)
+			{
+				$this->add_key($one, $primary);
+			}
+
+			return $this;
+		}
+
+		if ($primary === TRUE)
+		{
+			$this->primary_keys[] = $key;
+		}
+		else
+		{
+			$this->keys[] = $key;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Field
+	 *
+	 * @param	array	$field
+	 * @return	CI_DB_forge
+	 */
+	public function add_field($field)
+	{
+		if (is_string($field))
+		{
+			if ($field === 'id')
+			{
+				$this->add_field(array(
+					'id' => array(
+						'type' => 'INT',
+						'constraint' => 9,
+						'auto_increment' => TRUE
+					)
+				));
+				$this->add_key('id', TRUE);
+			}
+			else
+			{
+				if (strpos($field, ' ') === FALSE)
+				{
+					show_error('Field information is required for that operation.');
+				}
+
+				$this->fields[] = $field;
+			}
+		}
+
+		if (is_array($field))
+		{
+			$this->fields = array_merge($this->fields, $field);
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Table
+	 *
+	 * @param	string	$table		Table name
+	 * @param	bool	$if_not_exists	Whether to add IF NOT EXISTS condition
+	 * @param	array	$attributes	Associative array of table attributes
+	 * @return	bool
+	 */
+	public function create_table($table, $if_not_exists = FALSE, array $attributes = array())
+	{
+		if ($table === '')
+		{
+			show_error('A table name is required for that operation.');
+		}
+		else
+		{
+			$table = $this->db->dbprefix.$table;
+		}
+
+		if (count($this->fields) === 0)
+		{
+			show_error('Field information is required.');
+		}
+
+		$sql = $this->_create_table($table, $if_not_exists, $attributes);
+
+		if (is_bool($sql))
+		{
+			$this->_reset();
+			if ($sql === FALSE)
+			{
+				return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+			}
+		}
+
+		if (($result = $this->db->query($sql)) !== FALSE)
+		{
+			if (isset($this->db->data_cache['table_names']))
+			{
+				$this->db->data_cache['table_names'][] = $table;
+			}
+
+			// Most databases don't support creating indexes from within the CREATE TABLE statement
+			if ( ! empty($this->keys))
+			{
+				for ($i = 0, $sqls = $this->_process_indexes($table), $c = count($sqls); $i < $c; $i++)
+				{
+					$this->db->query($sqls[$i]);
+				}
+			}
+		}
+
+		$this->_reset();
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Table
+	 *
+	 * @param	string	$table		Table name
+	 * @param	bool	$if_not_exists	Whether to add 'IF NOT EXISTS' condition
+	 * @param	array	$attributes	Associative array of table attributes
+	 * @return	mixed
+	 */
+	protected function _create_table($table, $if_not_exists, $attributes)
+	{
+		if ($if_not_exists === TRUE && $this->_create_table_if === FALSE)
+		{
+			if ($this->db->table_exists($table))
+			{
+				return TRUE;
+			}
+
+			$if_not_exists = FALSE;
+		}
+
+		$sql = ($if_not_exists)
+			? sprintf($this->_create_table_if, $this->db->escape_identifiers($table))
+			: 'CREATE TABLE';
+
+		$columns = $this->_process_fields(TRUE);
+		for ($i = 0, $c = count($columns); $i < $c; $i++)
+		{
+			$columns[$i] = ($columns[$i]['_literal'] !== FALSE)
+					? "\n\t".$columns[$i]['_literal']
+					: "\n\t".$this->_process_column($columns[$i]);
+		}
+
+		$columns = implode(',', $columns)
+				.$this->_process_primary_keys($table);
+
+		// Are indexes created from within the CREATE TABLE statement? (e.g. in MySQL)
+		if ($this->_create_table_keys === TRUE)
+		{
+			$columns .= $this->_process_indexes($table);
+		}
+
+		// _create_table will usually have the following format: "%s %s (%s\n)"
+		$sql = sprintf($this->_create_table.'%s',
+			$sql,
+			$this->db->escape_identifiers($table),
+			$columns,
+			$this->_create_table_attr($attributes)
+		);
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CREATE TABLE attributes
+	 *
+	 * @param	array	$attributes	Associative array of table attributes
+	 * @return	string
+	 */
+	protected function _create_table_attr($attributes)
+	{
+		$sql = '';
+
+		foreach (array_keys($attributes) as $key)
+		{
+			if (is_string($key))
+			{
+				$sql .= ' '.strtoupper($key).' '.$attributes[$key];
+			}
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop Table
+	 *
+	 * @param	string	$table_name	Table name
+	 * @param	bool	$if_exists	Whether to add an IF EXISTS condition
+	 * @return	bool
+	 */
+	public function drop_table($table_name, $if_exists = FALSE)
+	{
+		if ($table_name === '')
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_table_name_required') : FALSE;
+		}
+
+		if (($query = $this->_drop_table($this->db->dbprefix.$table_name, $if_exists)) === TRUE)
+		{
+			return TRUE;
+		}
+
+		$query = $this->db->query($query);
+
+		// Update table list cache
+		if ($query && ! empty($this->db->data_cache['table_names']))
+		{
+			$key = array_search(strtolower($this->db->dbprefix.$table_name), array_map('strtolower', $this->db->data_cache['table_names']), TRUE);
+			if ($key !== FALSE)
+			{
+				unset($this->db->data_cache['table_names'][$key]);
+			}
+		}
+
+		return $query;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop Table
+	 *
+	 * Generates a platform-specific DROP TABLE string
+	 *
+	 * @param	string	$table		Table name
+	 * @param	bool	$if_exists	Whether to add an IF EXISTS condition
+	 * @return	mixed	(Returns a platform-specific DROP table string, or TRUE to indicate there's nothing to do)
+	 */
+	protected function _drop_table($table, $if_exists)
+	{
+		$sql = 'DROP TABLE';
+
+		if ($if_exists)
+		{
+			if ($this->_drop_table_if === FALSE)
+			{
+				if ( ! $this->db->table_exists($table))
+				{
+					return TRUE;
+				}
+			}
+			else
+			{
+				$sql = sprintf($this->_drop_table_if, $this->db->escape_identifiers($table));
+			}
+		}
+
+		return $sql.' '.$this->db->escape_identifiers($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rename Table
+	 *
+	 * @param	string	$table_name	Old table name
+	 * @param	string	$new_table_name	New table name
+	 * @return	bool
+	 */
+	public function rename_table($table_name, $new_table_name)
+	{
+		if ($table_name === '' OR $new_table_name === '')
+		{
+			show_error('A table name is required for that operation.');
+			return FALSE;
+		}
+		elseif ($this->_rename_table === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		$result = $this->db->query(sprintf($this->_rename_table,
+						$this->db->escape_identifiers($this->db->dbprefix.$table_name),
+						$this->db->escape_identifiers($this->db->dbprefix.$new_table_name))
+					);
+
+		if ($result && ! empty($this->db->data_cache['table_names']))
+		{
+			$key = array_search(strtolower($this->db->dbprefix.$table_name), array_map('strtolower', $this->db->data_cache['table_names']), TRUE);
+			if ($key !== FALSE)
+			{
+				$this->db->data_cache['table_names'][$key] = $this->db->dbprefix.$new_table_name;
+			}
+		}
+
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Column Add
+	 *
+	 * @todo	Remove deprecated $_after option in 3.1+
+	 * @param	string	$table	Table name
+	 * @param	array	$field	Column definition
+	 * @param	string	$_after	Column for AFTER clause (deprecated)
+	 * @return	bool
+	 */
+	public function add_column($table, $field, $_after = NULL)
+	{
+		// Work-around for literal column definitions
+		is_array($field) OR $field = array($field);
+
+		foreach (array_keys($field) as $k)
+		{
+			// Backwards-compatibility work-around for MySQL/CUBRID AFTER clause (remove in 3.1+)
+			if ($_after !== NULL && is_array($field[$k]) && ! isset($field[$k]['after']))
+			{
+				$field[$k]['after'] = $_after;
+			}
+
+			$this->add_field(array($k => $field[$k]));
+		}
+
+		$sqls = $this->_alter_table('ADD', $this->db->dbprefix.$table, $this->_process_fields());
+		$this->_reset();
+		if ($sqls === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		for ($i = 0, $c = count($sqls); $i < $c; $i++)
+		{
+			if ($this->db->query($sqls[$i]) === FALSE)
+			{
+				return FALSE;
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Column Drop
+	 *
+	 * @param	string	$table		Table name
+	 * @param	string	$column_name	Column name
+	 * @return	bool
+	 */
+	public function drop_column($table, $column_name)
+	{
+		$sql = $this->_alter_table('DROP', $this->db->dbprefix.$table, $column_name);
+		if ($sql === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		return $this->db->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Column Modify
+	 *
+	 * @param	string	$table	Table name
+	 * @param	string	$field	Column definition
+	 * @return	bool
+	 */
+	public function modify_column($table, $field)
+	{
+		// Work-around for literal column definitions
+		is_array($field) OR $field = array($field);
+
+		foreach (array_keys($field) as $k)
+		{
+			$this->add_field(array($k => $field[$k]));
+		}
+
+		if (count($this->fields) === 0)
+		{
+			show_error('Field information is required.');
+		}
+
+		$sqls = $this->_alter_table('CHANGE', $this->db->dbprefix.$table, $this->_process_fields());
+		$this->_reset();
+		if ($sqls === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		for ($i = 0, $c = count($sqls); $i < $c; $i++)
+		{
+			if ($this->db->query($sqls[$i]) === FALSE)
+			{
+				return FALSE;
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table).' ';
+
+		// DROP has everything it needs now.
+		if ($alter_type === 'DROP')
+		{
+			return $sql.'DROP COLUMN '.$this->db->escape_identifiers($field);
+		}
+
+		$sql .= ($alter_type === 'ADD')
+			? 'ADD '
+			: $alter_type.' COLUMN ';
+
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			$sqls[] = $sql
+				.($field[$i]['_literal'] !== FALSE ? $field[$i]['_literal'] : $this->_process_column($field[$i]));
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process fields
+	 *
+	 * @param	bool	$create_table
+	 * @return	array
+	 */
+	protected function _process_fields($create_table = FALSE)
+	{
+		$fields = array();
+
+		foreach ($this->fields as $key => $attributes)
+		{
+			if (is_int($key) && ! is_array($attributes))
+			{
+				$fields[] = array('_literal' => $attributes);
+				continue;
+			}
+
+			$attributes = array_change_key_case($attributes, CASE_UPPER);
+
+			if ($create_table === TRUE && empty($attributes['TYPE']))
+			{
+				continue;
+			}
+
+			isset($attributes['TYPE']) && $this->_attr_type($attributes);
+
+			$field = array(
+				'name'			=> $key,
+				'new_name'		=> isset($attributes['NAME']) ? $attributes['NAME'] : NULL,
+				'type'			=> isset($attributes['TYPE']) ? $attributes['TYPE'] : NULL,
+				'length'		=> '',
+				'unsigned'		=> '',
+				'null'			=> NULL,
+				'unique'		=> '',
+				'default'		=> '',
+				'auto_increment'	=> '',
+				'_literal'		=> FALSE
+			);
+
+			isset($attributes['TYPE']) && $this->_attr_unsigned($attributes, $field);
+
+			if ($create_table === FALSE)
+			{
+				if (isset($attributes['AFTER']))
+				{
+					$field['after'] = $attributes['AFTER'];
+				}
+				elseif (isset($attributes['FIRST']))
+				{
+					$field['first'] = (bool) $attributes['FIRST'];
+				}
+			}
+
+			$this->_attr_default($attributes, $field);
+
+			if (isset($attributes['NULL']))
+			{
+				if ($attributes['NULL'] === TRUE)
+				{
+					$field['null'] = empty($this->_null) ? '' : ' '.$this->_null;
+				}
+				else
+				{
+					$field['null'] = ' NOT NULL';
+				}
+			}
+			elseif ($create_table === TRUE)
+			{
+				$field['null'] = ' NOT NULL';
+			}
+
+			$this->_attr_auto_increment($attributes, $field);
+			$this->_attr_unique($attributes, $field);
+
+			if (isset($attributes['COMMENT']))
+			{
+				$field['comment'] = $this->db->escape($attributes['COMMENT']);
+			}
+
+			if (isset($attributes['TYPE']) && ! empty($attributes['CONSTRAINT']))
+			{
+				switch (strtoupper($attributes['TYPE']))
+				{
+					case 'ENUM':
+					case 'SET':
+						$attributes['CONSTRAINT'] = $this->db->escape($attributes['CONSTRAINT']);
+					default:
+						$field['length'] = is_array($attributes['CONSTRAINT'])
+							? '('.implode(',', $attributes['CONSTRAINT']).')'
+							: '('.$attributes['CONSTRAINT'].')';
+						break;
+				}
+			}
+
+			$fields[] = $field;
+		}
+
+		return $fields;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['default']
+			.$field['null']
+			.$field['auto_increment']
+			.$field['unique'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		// Usually overridden by drivers
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute UNSIGNED
+	 *
+	 * Depending on the _unsigned property value:
+	 *
+	 *	- TRUE will always set $field['unsigned'] to 'UNSIGNED'
+	 *	- FALSE will always set $field['unsigned'] to ''
+	 *	- array(TYPE) will set $field['unsigned'] to 'UNSIGNED',
+	 *		if $attributes['TYPE'] is found in the array
+	 *	- array(TYPE => UTYPE) will change $field['type'],
+	 *		from TYPE to UTYPE in case of a match
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_unsigned(&$attributes, &$field)
+	{
+		if (empty($attributes['UNSIGNED']) OR $attributes['UNSIGNED'] !== TRUE)
+		{
+			return;
+		}
+
+		// Reset the attribute in order to avoid issues if we do type conversion
+		$attributes['UNSIGNED'] = FALSE;
+
+		if (is_array($this->_unsigned))
+		{
+			foreach (array_keys($this->_unsigned) as $key)
+			{
+				if (is_int($key) && strcasecmp($attributes['TYPE'], $this->_unsigned[$key]) === 0)
+				{
+					$field['unsigned'] = ' UNSIGNED';
+					return;
+				}
+				elseif (is_string($key) && strcasecmp($attributes['TYPE'], $key) === 0)
+				{
+					$field['type'] = $key;
+					return;
+				}
+			}
+
+			return;
+		}
+
+		$field['unsigned'] = ($this->_unsigned === TRUE) ? ' UNSIGNED' : '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute DEFAULT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_default(&$attributes, &$field)
+	{
+		if ($this->_default === FALSE)
+		{
+			return;
+		}
+
+		if ( ! array_key_exists('DEFAULT', $attributes))
+		{
+			return;
+		}
+
+		if ($attributes['DEFAULT'] === NULL)
+		{
+			$field['default'] = empty($this->_null) ? '' : $this->_default.$this->_null;
+
+			// Override the NULL attribute if that's our default
+			$attributes['NULL'] = TRUE;
+			$field['null'] = empty($this->_null) ? '' : ' '.$this->_null;
+			return;
+		}
+
+		// White-list CURRENT_TIMESTAMP & similar (e.g. Oracle has stuff like SYSTIMESTAMP) defaults for date/time fields
+		if (
+			isset($attributes['TYPE'])
+			&& (stripos($attributes['TYPE'],    'time') !== FALSE OR stripos($attributes['TYPE'],    'date') !== FALSE)
+			&& (stripos($attributes['DEFAULT'], 'time') !== FALSE OR stripos($attributes['DEFAULT'], 'date') !== FALSE)
+		)
+		{
+			$field['default'] = $this->_default.$attributes['DEFAULT'];
+			return;
+		}
+
+		$field['default'] = $this->_default.$this->db->escape($attributes['DEFAULT']);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute UNIQUE
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_unique(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['UNIQUE']) && $attributes['UNIQUE'] === TRUE)
+		{
+			$field['unique'] = ' UNIQUE';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['auto_increment'] = ' AUTO_INCREMENT';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process primary keys
+	 *
+	 * @param	string	$table	Table name
+	 * @return	string
+	 */
+	protected function _process_primary_keys($table)
+	{
+		$sql = '';
+
+		for ($i = 0, $c = count($this->primary_keys); $i < $c; $i++)
+		{
+			if ( ! isset($this->fields[$this->primary_keys[$i]]))
+			{
+				unset($this->primary_keys[$i]);
+			}
+		}
+
+		if (count($this->primary_keys) > 0)
+		{
+			$sql .= ",\n\tCONSTRAINT ".$this->db->escape_identifiers('pk_'.$table)
+				.' PRIMARY KEY('.implode(', ', $this->db->escape_identifiers($this->primary_keys)).')';
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process indexes
+	 *
+	 * @param	string	$table	Table name
+	 * @return	string[] list of SQL statements
+	 */
+	protected function _process_indexes($table)
+	{
+		$sqls = array();
+
+		for ($i = 0, $c = count($this->keys); $i < $c; $i++)
+		{
+			if (is_array($this->keys[$i]))
+			{
+				for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
+				{
+					if ( ! isset($this->fields[$this->keys[$i][$i2]]))
+					{
+						unset($this->keys[$i][$i2]);
+						continue;
+					}
+				}
+			}
+			elseif ( ! isset($this->fields[$this->keys[$i]]))
+			{
+				unset($this->keys[$i]);
+				continue;
+			}
+
+			is_array($this->keys[$i]) OR $this->keys[$i] = array($this->keys[$i]);
+
+			$sqls[] = 'CREATE INDEX '.$this->db->escape_identifiers($table.'_'.implode('_', $this->keys[$i]))
+				.' ON '.$this->db->escape_identifiers($table)
+				.' ('.implode(', ', $this->db->escape_identifiers($this->keys[$i])).');';
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reset
+	 *
+	 * Resets table creation vars
+	 *
+	 * @return	void
+	 */
+	protected function _reset()
+	{
+		$this->fields = $this->keys = $this->primary_keys = array();
+	}
+
+}
diff --git a/system/database/DB_query_builder.php b/system/database/DB_query_builder.php
new file mode 100644
index 00000000..5480ed44
--- /dev/null
+++ b/system/database/DB_query_builder.php
@@ -0,0 +1,2880 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Query Builder Class
+ *
+ * This is the platform-independent base Query Builder implementation class.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+
+abstract class CI_DB_query_builder extends CI_DB_driver {
+
+	/**
+	 * Return DELETE SQL flag
+	 *
+	 * @var	bool
+	 */
+	protected $return_delete_sql		= FALSE;
+
+	/**
+	 * Reset DELETE data flag
+	 *
+	 * @var	bool
+	 */
+	protected $reset_delete_data		= FALSE;
+
+	/**
+	 * QB SELECT data
+	 *
+	 * @var	array
+	 */
+	protected $qb_select			= array();
+
+	/**
+	 * QB DISTINCT flag
+	 *
+	 * @var	bool
+	 */
+	protected $qb_distinct			= FALSE;
+
+	/**
+	 * QB FROM data
+	 *
+	 * @var	array
+	 */
+	protected $qb_from			= array();
+
+	/**
+	 * QB JOIN data
+	 *
+	 * @var	array
+	 */
+	protected $qb_join			= array();
+
+	/**
+	 * QB WHERE data
+	 *
+	 * @var	array
+	 */
+	protected $qb_where			= array();
+
+	/**
+	 * QB GROUP BY data
+	 *
+	 * @var	array
+	 */
+	protected $qb_groupby			= array();
+
+	/**
+	 * QB HAVING data
+	 *
+	 * @var	array
+	 */
+	protected $qb_having			= array();
+
+	/**
+	 * QB keys
+	 *
+	 * @var	array
+	 */
+	protected $qb_keys			= array();
+
+	/**
+	 * QB LIMIT data
+	 *
+	 * @var	int
+	 */
+	protected $qb_limit			= FALSE;
+
+	/**
+	 * QB OFFSET data
+	 *
+	 * @var	int
+	 */
+	protected $qb_offset			= FALSE;
+
+	/**
+	 * QB ORDER BY data
+	 *
+	 * @var	array
+	 */
+	protected $qb_orderby			= array();
+
+	/**
+	 * QB data sets
+	 *
+	 * @var	array
+	 */
+	protected $qb_set			= array();
+
+	/**
+	 * QB data set for update_batch()
+	 *
+	 * @var	array
+	 */
+	protected $qb_set_ub			= array();
+
+	/**
+	 * QB aliased tables list
+	 *
+	 * @var	array
+	 */
+	protected $qb_aliased_tables		= array();
+
+	/**
+	 * QB WHERE group started flag
+	 *
+	 * @var	bool
+	 */
+	protected $qb_where_group_started	= FALSE;
+
+	/**
+	 * QB WHERE group count
+	 *
+	 * @var	int
+	 */
+	protected $qb_where_group_count		= 0;
+
+	// Query Builder Caching variables
+
+	/**
+	 * QB Caching flag
+	 *
+	 * @var	bool
+	 */
+	protected $qb_caching				= FALSE;
+
+	/**
+	 * QB Cache exists list
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_exists			= array();
+
+	/**
+	 * QB Cache SELECT data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_select			= array();
+
+	/**
+	 * QB Cache FROM data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_from			= array();
+
+	/**
+	 * QB Cache JOIN data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_join			= array();
+
+	/**
+	 * QB Cache aliased tables list
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_aliased_tables			= array();
+
+	/**
+	 * QB Cache WHERE data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_where			= array();
+
+	/**
+	 * QB Cache GROUP BY data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_groupby			= array();
+
+	/**
+	 * QB Cache HAVING data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_having			= array();
+
+	/**
+	 * QB Cache ORDER BY data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_orderby			= array();
+
+	/**
+	 * QB Cache data sets
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_set				= array();
+
+	/**
+	 * QB No Escape data
+	 *
+	 * @var	array
+	 */
+	protected $qb_no_escape 			= array();
+
+	/**
+	 * QB Cache No Escape data
+	 *
+	 * @var	array
+	 */
+	protected $qb_cache_no_escape			= array();
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select
+	 *
+	 * Generates the SELECT portion of the query
+	 *
+	 * @param	string
+	 * @param	mixed
+	 * @return	CI_DB_query_builder
+	 */
+	public function select($select = '*', $escape = NULL)
+	{
+		if (is_string($select))
+		{
+			$select = explode(',', $select);
+		}
+
+		// If the escape value was not set, we will base it on the global setting
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		foreach ($select as $val)
+		{
+			$val = trim($val);
+
+			if ($val !== '')
+			{
+				$this->qb_select[] = $val;
+				$this->qb_no_escape[] = $escape;
+
+				if ($this->qb_caching === TRUE)
+				{
+					$this->qb_cache_select[] = $val;
+					$this->qb_cache_exists[] = 'select';
+					$this->qb_cache_no_escape[] = $escape;
+				}
+			}
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select Max
+	 *
+	 * Generates a SELECT MAX(field) portion of a query
+	 *
+	 * @param	string	the field
+	 * @param	string	an alias
+	 * @return	CI_DB_query_builder
+	 */
+	public function select_max($select = '', $alias = '')
+	{
+		return $this->_max_min_avg_sum($select, $alias, 'MAX');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select Min
+	 *
+	 * Generates a SELECT MIN(field) portion of a query
+	 *
+	 * @param	string	the field
+	 * @param	string	an alias
+	 * @return	CI_DB_query_builder
+	 */
+	public function select_min($select = '', $alias = '')
+	{
+		return $this->_max_min_avg_sum($select, $alias, 'MIN');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select Average
+	 *
+	 * Generates a SELECT AVG(field) portion of a query
+	 *
+	 * @param	string	the field
+	 * @param	string	an alias
+	 * @return	CI_DB_query_builder
+	 */
+	public function select_avg($select = '', $alias = '')
+	{
+		return $this->_max_min_avg_sum($select, $alias, 'AVG');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select Sum
+	 *
+	 * Generates a SELECT SUM(field) portion of a query
+	 *
+	 * @param	string	the field
+	 * @param	string	an alias
+	 * @return	CI_DB_query_builder
+	 */
+	public function select_sum($select = '', $alias = '')
+	{
+		return $this->_max_min_avg_sum($select, $alias, 'SUM');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * SELECT [MAX|MIN|AVG|SUM]()
+	 *
+	 * @used-by	select_max()
+	 * @used-by	select_min()
+	 * @used-by	select_avg()
+	 * @used-by	select_sum()
+	 *
+	 * @param	string	$select	Field name
+	 * @param	string	$alias
+	 * @param	string	$type
+	 * @return	CI_DB_query_builder
+	 */
+	protected function _max_min_avg_sum($select = '', $alias = '', $type = 'MAX')
+	{
+		if ( ! is_string($select) OR $select === '')
+		{
+			$this->display_error('db_invalid_query');
+		}
+
+		$type = strtoupper($type);
+
+		if ( ! in_array($type, array('MAX', 'MIN', 'AVG', 'SUM')))
+		{
+			show_error('Invalid function type: '.$type);
+		}
+
+		if ($alias === '')
+		{
+			$alias = $this->_create_alias_from_table(trim($select));
+		}
+
+		$sql = $type.'('.$this->protect_identifiers(trim($select)).') AS '.$this->escape_identifiers(trim($alias));
+
+		$this->qb_select[] = $sql;
+		$this->qb_no_escape[] = NULL;
+
+		if ($this->qb_caching === TRUE)
+		{
+			$this->qb_cache_select[] = $sql;
+			$this->qb_cache_exists[] = 'select';
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determines the alias name based on the table
+	 *
+	 * @param	string	$item
+	 * @return	string
+	 */
+	protected function _create_alias_from_table($item)
+	{
+		if (strpos($item, '.') !== FALSE)
+		{
+			$item = explode('.', $item);
+			return end($item);
+		}
+
+		return $item;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * DISTINCT
+	 *
+	 * Sets a flag which tells the query string compiler to add DISTINCT
+	 *
+	 * @param	bool	$val
+	 * @return	CI_DB_query_builder
+	 */
+	public function distinct($val = TRUE)
+	{
+		$this->qb_distinct = is_bool($val) ? $val : TRUE;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * From
+	 *
+	 * Generates the FROM portion of the query
+	 *
+	 * @param	mixed	$from	can be a string or array
+	 * @return	CI_DB_query_builder
+	 */
+	public function from($from)
+	{
+		foreach ((array) $from as $val)
+		{
+			if (strpos($val, ',') !== FALSE)
+			{
+				foreach (explode(',', $val) as $v)
+				{
+					$v = trim($v);
+					$this->_track_aliases($v);
+
+					$this->qb_from[] = $v = $this->protect_identifiers($v, TRUE, NULL, FALSE);
+
+					if ($this->qb_caching === TRUE)
+					{
+						$this->qb_cache_from[] = $v;
+						$this->qb_cache_exists[] = 'from';
+					}
+				}
+			}
+			else
+			{
+				$val = trim($val);
+
+				// Extract any aliases that might exist. We use this information
+				// in the protect_identifiers to know whether to add a table prefix
+				$this->_track_aliases($val);
+
+				$this->qb_from[] = $val = $this->protect_identifiers($val, TRUE, NULL, FALSE);
+
+				if ($this->qb_caching === TRUE)
+				{
+					$this->qb_cache_from[] = $val;
+					$this->qb_cache_exists[] = 'from';
+				}
+			}
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * JOIN
+	 *
+	 * Generates the JOIN portion of the query
+	 *
+	 * @param	string
+	 * @param	string	the join condition
+	 * @param	string	the type of join
+	 * @param	string	whether not to try to escape identifiers
+	 * @return	CI_DB_query_builder
+	 */
+	public function join($table, $cond, $type = '', $escape = NULL)
+	{
+		$type = trim(strtoupper($type).' JOIN');
+		preg_match('#^(NATURAL\s+)?((LEFT|RIGHT|FULL)\s+)?((INNER|OUTER)\s+)?JOIN$#', $type) OR $type = 'JOIN';
+
+		// Extract any aliases that might exist. We use this information
+		// in the protect_identifiers to know whether to add a table prefix
+		$this->_track_aliases($table);
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		if (strpos($type, 'NATURAL') === 0)
+		{
+			$cond = '';
+		}
+		elseif ( ! $this->_has_operator($cond))
+		{
+			$cond = ' USING ('.($escape ? $this->escape_identifiers($cond) : $cond).')';
+		}
+		elseif ($escape === FALSE)
+		{
+			$cond = ' ON '.$cond;
+		}
+		else
+		{
+			// Split multiple conditions
+			if (preg_match_all('/\sAND\s|\sOR\s/i', $cond, $joints, PREG_OFFSET_CAPTURE))
+			{
+				$conditions = array();
+				$joints = $joints[0];
+				array_unshift($joints, array('', 0));
+
+				for ($i = count($joints) - 1, $pos = strlen($cond); $i >= 0; $i--)
+				{
+					$joints[$i][1] += strlen($joints[$i][0]); // offset
+					$conditions[$i] = substr($cond, $joints[$i][1], $pos - $joints[$i][1]);
+					$pos = $joints[$i][1] - strlen($joints[$i][0]);
+					$joints[$i] = $joints[$i][0];
+				}
+			}
+			else
+			{
+				$conditions = array($cond);
+				$joints = array('');
+			}
+
+			$cond = ' ON ';
+			for ($i = 0, $c = count($conditions); $i < $c; $i++)
+			{
+				$operator = $this->_get_operator($conditions[$i]);
+				$cond .= $joints[$i];
+				$cond .= preg_match("/(\(*)?([\[\]\w\.'-]+)".preg_quote($operator)."(.*)/i", $conditions[$i], $match)
+					? $match[1].$this->protect_identifiers($match[2]).$operator.$this->protect_identifiers($match[3])
+					: $conditions[$i];
+			}
+		}
+
+		// Do we want to escape the table name?
+		if ($escape === TRUE)
+		{
+			$table = $this->protect_identifiers($table, TRUE, NULL, FALSE);
+		}
+
+		// Assemble the JOIN statement
+		$this->qb_join[] = $join = $type.' '.$table.$cond;
+
+		if ($this->qb_caching === TRUE)
+		{
+			$this->qb_cache_join[] = $join;
+			$this->qb_cache_exists[] = 'join';
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * WHERE
+	 *
+	 * Generates the WHERE portion of the query.
+	 * Separates multiple calls with 'AND'.
+	 *
+	 * @param	mixed
+	 * @param	mixed
+	 * @param	bool
+	 * @return	CI_DB_query_builder
+	 */
+	public function where($key, $value = NULL, $escape = NULL)
+	{
+		return $this->_wh('qb_where', $key, $value, 'AND ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR WHERE
+	 *
+	 * Generates the WHERE portion of the query.
+	 * Separates multiple calls with 'OR'.
+	 *
+	 * @param	mixed
+	 * @param	mixed
+	 * @param	bool
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_where($key, $value = NULL, $escape = NULL)
+	{
+		return $this->_wh('qb_where', $key, $value, 'OR ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * WHERE, HAVING
+	 *
+	 * @used-by	where()
+	 * @used-by	or_where()
+	 * @used-by	having()
+	 * @used-by	or_having()
+	 *
+	 * @param	string	$qb_key	'qb_where' or 'qb_having'
+	 * @param	mixed	$key
+	 * @param	mixed	$value
+	 * @param	string	$type
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	protected function _wh($qb_key, $key, $value = NULL, $type = 'AND ', $escape = NULL)
+	{
+		$qb_cache_key = ($qb_key === 'qb_having') ? 'qb_cache_having' : 'qb_cache_where';
+
+		if ( ! is_array($key))
+		{
+			$key = array($key => $value);
+		}
+
+		// If the escape value was not set will base it on the global setting
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		foreach ($key as $k => $v)
+		{
+			$prefix = (count($this->$qb_key) === 0 && count($this->$qb_cache_key) === 0)
+				? $this->_group_get_type('')
+				: $this->_group_get_type($type);
+
+			if ($v !== NULL)
+			{
+				if ($escape === TRUE)
+				{
+					$v = $this->escape($v);
+				}
+
+				if ( ! $this->_has_operator($k))
+				{
+					$k .= ' = ';
+				}
+			}
+			elseif ( ! $this->_has_operator($k))
+			{
+				// value appears not to have been set, assign the test to IS NULL
+				$k .= ' IS NULL';
+			}
+			elseif (preg_match('/\s*(!?=|<>|\sIS(?:\s+NOT)?\s)\s*$/i', $k, $match, PREG_OFFSET_CAPTURE))
+			{
+				$k = substr($k, 0, $match[0][1]).($match[1][0] === '=' ? ' IS NULL' : ' IS NOT NULL');
+			}
+
+			${$qb_key} = array('condition' => $prefix.$k, 'value' => $v, 'escape' => $escape);
+			$this->{$qb_key}[] = ${$qb_key};
+			if ($this->qb_caching === TRUE)
+			{
+				$this->{$qb_cache_key}[] = ${$qb_key};
+				$this->qb_cache_exists[] = substr($qb_key, 3);
+			}
+
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * WHERE IN
+	 *
+	 * Generates a WHERE field IN('item', 'item') SQL query,
+	 * joined with 'AND' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function where_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_where', $key, $values, FALSE, 'AND ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR WHERE IN
+	 *
+	 * Generates a WHERE field IN('item', 'item') SQL query,
+	 * joined with 'OR' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_where_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_where', $key, $values, FALSE, 'OR ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * WHERE NOT IN
+	 *
+	 * Generates a WHERE field NOT IN('item', 'item') SQL query,
+	 * joined with 'AND' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function where_not_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_where', $key, $values, TRUE, 'AND ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR WHERE NOT IN
+	 *
+	 * Generates a WHERE field NOT IN('item', 'item') SQL query,
+	 * joined with 'OR' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_where_not_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_where', $key, $values, TRUE, 'OR ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * HAVING IN
+	 *
+	 * Generates a HAVING field IN('item', 'item') SQL query,
+	 * joined with 'AND' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function having_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_having', $key, $values, FALSE, 'AND ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR HAVING IN
+	 *
+	 * Generates a HAVING field IN('item', 'item') SQL query,
+	 * joined with 'OR' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_having_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_having', $key, $values, FALSE, 'OR ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * HAVING NOT IN
+	 *
+	 * Generates a HAVING field NOT IN('item', 'item') SQL query,
+	 * joined with 'AND' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function having_not_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_having', $key, $values, TRUE, 'AND ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR HAVING NOT IN
+	 *
+	 * Generates a HAVING field NOT IN('item', 'item') SQL query,
+	 * joined with 'OR' if appropriate.
+	 *
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_having_not_in($key, array $values, $escape = NULL)
+	{
+		return $this->_wh_in('qb_having', $key, $values, TRUE, 'OR ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal WHERE/HAVING IN
+	 *
+	 * @used-by	where_in()
+	 * @used-by	or_where_in()
+	 * @used-by	where_not_in()
+	 * @used-by	or_where_not_in()
+	 * @used-by	having_in()
+	 * @used-by	or_having_in()
+	 * @used-by	having_not_in()
+	 * @used-by	or_having_not_in()
+	 *
+	 * @param	string	$qb_key	'qb_where' or 'qb_having'
+	 * @param	string	$key	The field to search
+	 * @param	array	$values	The values searched on
+	 * @param	bool	$not	If the statement would be IN or NOT IN
+	 * @param	string	$type
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	protected function _wh_in($qb_key, $key, array $values, $not = FALSE, $type = 'AND ', $escape = NULL)
+	{
+		$qb_cache_key = ($qb_key === 'qb_having') ? 'qb_cache_having' : 'qb_cache_where';
+
+		if (empty($key) OR ! is_string($key))
+		{
+			throw new InvalidArgumentException(sprintf('%s() expects $key to be a non-empty string', debug_backtrace(0, 2)[1]['function']));
+		}
+
+		if (empty($values))
+		{
+			throw new InvalidArgumentException(sprintf('%s() expects $values to be a non-empty array', debug_backtrace(0, 2)[1]['function']));
+		}
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		$not = ($not) ? ' NOT' : '';
+
+		if ($escape === TRUE)
+		{
+			$wh_in = array();
+			foreach ($values as $value)
+			{
+				$wh_in[] = $this->escape($value);
+			}
+		}
+		else
+		{
+			$wh_in = array_values($values);
+		}
+
+		$prefix = (count($this->$qb_key) === 0 && count($this->$qb_cache_key) === 0)
+			? $this->_group_get_type('')
+			: $this->_group_get_type($type);
+
+		$wh_in = array(
+			'condition' => $prefix.$key.$not.' IN('.implode(', ', $wh_in).')',
+			'value' => NULL,
+			'escape' => $escape
+		);
+
+		$this->{$qb_key}[] = $wh_in;
+		if ($this->qb_caching === TRUE)
+		{
+			$this->{$qb_cache_key}[] = $wh_in;
+			$this->qb_cache_exists[] = substr($qb_key, 3);
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIKE
+	 *
+	 * Generates a %LIKE% portion of the query.
+	 * Separates multiple calls with 'AND'.
+	 *
+	 * @param	mixed	$field
+	 * @param	string	$match
+	 * @param	string	$side
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function like($field, $match = '', $side = 'both', $escape = NULL)
+	{
+		return $this->_like($field, $match, 'AND ', $side, '', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * NOT LIKE
+	 *
+	 * Generates a NOT LIKE portion of the query.
+	 * Separates multiple calls with 'AND'.
+	 *
+	 * @param	mixed	$field
+	 * @param	string	$match
+	 * @param	string	$side
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function not_like($field, $match = '', $side = 'both', $escape = NULL)
+	{
+		return $this->_like($field, $match, 'AND ', $side, 'NOT', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR LIKE
+	 *
+	 * Generates a %LIKE% portion of the query.
+	 * Separates multiple calls with 'OR'.
+	 *
+	 * @param	mixed	$field
+	 * @param	string	$match
+	 * @param	string	$side
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_like($field, $match = '', $side = 'both', $escape = NULL)
+	{
+		return $this->_like($field, $match, 'OR ', $side, '', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR NOT LIKE
+	 *
+	 * Generates a NOT LIKE portion of the query.
+	 * Separates multiple calls with 'OR'.
+	 *
+	 * @param	mixed	$field
+	 * @param	string	$match
+	 * @param	string	$side
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_not_like($field, $match = '', $side = 'both', $escape = NULL)
+	{
+		return $this->_like($field, $match, 'OR ', $side, 'NOT', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Internal LIKE
+	 *
+	 * @used-by	like()
+	 * @used-by	or_like()
+	 * @used-by	not_like()
+	 * @used-by	or_not_like()
+	 *
+	 * @param	mixed	$field
+	 * @param	string	$match
+	 * @param	string	$type
+	 * @param	string	$side
+	 * @param	string	$not
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	protected function _like($field, $match = '', $type = 'AND ', $side = 'both', $not = '', $escape = NULL)
+	{
+		if ( ! is_array($field))
+		{
+			$field = array($field => $match);
+		}
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+		// lowercase $side in case somebody writes e.g. 'BEFORE' instead of 'before' (doh)
+		$side = strtolower($side);
+
+		foreach ($field as $k => $v)
+		{
+			$prefix = (count($this->qb_where) === 0 && count($this->qb_cache_where) === 0)
+				? $this->_group_get_type('') : $this->_group_get_type($type);
+
+			if ($escape === TRUE)
+			{
+				$v = $this->escape_like_str($v);
+			}
+
+			switch ($side)
+			{
+				case 'none':
+					$v = "'{$v}'";
+					break;
+				case 'before':
+					$v = "'%{$v}'";
+					break;
+				case 'after':
+					$v = "'{$v}%'";
+					break;
+				case 'both':
+				default:
+					$v = "'%{$v}%'";
+					break;
+			}
+
+			// some platforms require an escape sequence definition for LIKE wildcards
+			if ($escape === TRUE && $this->_like_escape_str !== '')
+			{
+				$v .= sprintf($this->_like_escape_str, $this->_like_escape_chr);
+			}
+
+			$qb_where = array('condition' => "{$prefix} {$k} {$not} LIKE {$v}", 'value' => NULL, 'escape' => $escape);
+			$this->qb_where[] = $qb_where;
+			if ($this->qb_caching === TRUE)
+			{
+				$this->qb_cache_where[] = $qb_where;
+				$this->qb_cache_exists[] = 'where';
+			}
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Starts a query group.
+	 *
+	 * @param	string	$not	(Internal use only)
+	 * @param	string	$type	(Internal use only)
+	 * @return	CI_DB_query_builder
+	 */
+	public function group_start($not = '', $type = 'AND ')
+	{
+		$type = $this->_group_get_type($type);
+
+		$this->qb_where_group_started = TRUE;
+		$prefix = (count($this->qb_where) === 0 && count($this->qb_cache_where) === 0) ? '' : $type;
+		$where = array(
+			'condition' => $prefix.$not.str_repeat(' ', ++$this->qb_where_group_count).' (',
+			'value' => NULL,
+			'escape' => FALSE
+		);
+
+		$this->qb_where[] = $where;
+		if ($this->qb_caching)
+		{
+			$this->qb_cache_where[] = $where;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Starts a query group, but ORs the group
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_group_start()
+	{
+		return $this->group_start('', 'OR ');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Starts a query group, but NOTs the group
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function not_group_start()
+	{
+		return $this->group_start('NOT ', 'AND ');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Starts a query group, but OR NOTs the group
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_not_group_start()
+	{
+		return $this->group_start('NOT ', 'OR ');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Ends a query group
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function group_end()
+	{
+		$this->qb_where_group_started = FALSE;
+		$where = array(
+			'condition' => str_repeat(' ', $this->qb_where_group_count--).')',
+			'value' => NULL,
+			'escape' => FALSE
+		);
+
+		$this->qb_where[] = $where;
+		if ($this->qb_caching)
+		{
+			$this->qb_cache_where[] = $where;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Group_get_type
+	 *
+	 * @used-by	group_start()
+	 * @used-by	_like()
+	 * @used-by	_wh()
+	 * @used-by	_where_in()
+	 *
+	 * @param	string	$type
+	 * @return	string
+	 */
+	protected function _group_get_type($type)
+	{
+		if ($this->qb_where_group_started)
+		{
+			$type = '';
+			$this->qb_where_group_started = FALSE;
+		}
+
+		return $type;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * GROUP BY
+	 *
+	 * @param	mixed	$by
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function group_by($by, $escape = NULL)
+	{
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		if (is_string($by))
+		{
+			$by = ($escape === TRUE)
+				? explode(',', $by)
+				: array($by);
+		}
+
+		foreach ($by as $val)
+		{
+			$val = trim($val);
+
+			if ($val !== '')
+			{
+				$val = array('field' => $val, 'escape' => $escape);
+
+				$this->qb_groupby[] = $val;
+				if ($this->qb_caching === TRUE)
+				{
+					$this->qb_cache_groupby[] = $val;
+					$this->qb_cache_exists[] = 'groupby';
+				}
+			}
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * HAVING
+	 *
+	 * Separates multiple calls with 'AND'.
+	 *
+	 * @param	string	$key
+	 * @param	string	$value
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function having($key, $value = NULL, $escape = NULL)
+	{
+		return $this->_wh('qb_having', $key, $value, 'AND ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * OR HAVING
+	 *
+	 * Separates multiple calls with 'OR'.
+	 *
+	 * @param	string	$key
+	 * @param	string	$value
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function or_having($key, $value = NULL, $escape = NULL)
+	{
+		return $this->_wh('qb_having', $key, $value, 'OR ', $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY
+	 *
+	 * @param	string	$orderby
+	 * @param	string	$direction	ASC, DESC or RANDOM
+	 * @param	bool	$escape
+	 * @return	CI_DB_query_builder
+	 */
+	public function order_by($orderby, $direction = '', $escape = NULL)
+	{
+		$direction = strtoupper(trim($direction));
+
+		if ($direction === 'RANDOM')
+		{
+			$direction = '';
+
+			// Do we have a seed value?
+			$orderby = ctype_digit((string) $orderby)
+				? sprintf($this->_random_keyword[1], $orderby)
+				: $this->_random_keyword[0];
+		}
+		elseif (empty($orderby))
+		{
+			return $this;
+		}
+		elseif ($direction !== '')
+		{
+			$direction = in_array($direction, array('ASC', 'DESC'), TRUE) ? ' '.$direction : '';
+		}
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		if ($escape === FALSE)
+		{
+			$qb_orderby[] = array('field' => $orderby, 'direction' => $direction, 'escape' => FALSE);
+		}
+		else
+		{
+			$qb_orderby = array();
+			foreach (explode(',', $orderby) as $field)
+			{
+				$qb_orderby[] = ($direction === '' && preg_match('/\s+(ASC|DESC)$/i', rtrim($field), $match, PREG_OFFSET_CAPTURE))
+					? array('field' => ltrim(substr($field, 0, $match[0][1])), 'direction' => ' '.$match[1][0], 'escape' => TRUE)
+					: array('field' => trim($field), 'direction' => $direction, 'escape' => TRUE);
+			}
+		}
+
+		$this->qb_orderby = array_merge($this->qb_orderby, $qb_orderby);
+		if ($this->qb_caching === TRUE)
+		{
+			$this->qb_cache_orderby = array_merge($this->qb_cache_orderby, $qb_orderby);
+			$this->qb_cache_exists[] = 'orderby';
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * @param	int	$value	LIMIT value
+	 * @param	int	$offset	OFFSET value
+	 * @return	CI_DB_query_builder
+	 */
+	public function limit($value, $offset = 0)
+	{
+		is_null($value) OR $this->qb_limit = (int) $value;
+		empty($offset) OR $this->qb_offset = (int) $offset;
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sets the OFFSET value
+	 *
+	 * @param	int	$offset	OFFSET value
+	 * @return	CI_DB_query_builder
+	 */
+	public function offset($offset)
+	{
+		empty($offset) OR $this->qb_offset = (int) $offset;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT string
+	 *
+	 * Generates a platform-specific LIMIT clause.
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		return $sql.' LIMIT '.($this->qb_offset ? $this->qb_offset.', ' : '').(int) $this->qb_limit;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The "set" function.
+	 *
+	 * Allows key/value pairs to be set for inserting or updating
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	bool
+	 * @return	CI_DB_query_builder
+	 */
+	public function set($key, $value = '', $escape = NULL)
+	{
+		$key = $this->_object_to_array($key);
+
+		if ( ! is_array($key))
+		{
+			$key = array($key => $value);
+		}
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		foreach ($key as $k => $v)
+		{
+			$this->qb_set[$this->protect_identifiers($k, FALSE, $escape)] = ($escape)
+				? $this->escape($v) : $v;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get SELECT query string
+	 *
+	 * Compiles a SELECT query string and returns the sql.
+	 *
+	 * @param	string	the table name to select from (optional)
+	 * @param	bool	TRUE: resets QB values; FALSE: leave QB values alone
+	 * @return	string
+	 */
+	public function get_compiled_select($table = '', $reset = TRUE)
+	{
+		if ($table !== '')
+		{
+			$this->_track_aliases($table);
+			$this->from($table);
+		}
+
+		$select = $this->_compile_select();
+
+		if ($reset === TRUE)
+		{
+			$this->_reset_select();
+		}
+
+		return $select;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get
+	 *
+	 * Compiles the select statement based on the other functions called
+	 * and runs the query
+	 *
+	 * @param	string	the table
+	 * @param	string	the limit clause
+	 * @param	string	the offset clause
+	 * @return	CI_DB_result
+	 */
+	public function get($table = '', $limit = NULL, $offset = NULL)
+	{
+		if ($table !== '')
+		{
+			$this->_track_aliases($table);
+			$this->from($table);
+		}
+
+		if ( ! empty($limit))
+		{
+			$this->limit($limit, $offset);
+		}
+
+		$result = $this->query($this->_compile_select());
+		$this->_reset_select();
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Count All Results" query
+	 *
+	 * Generates a platform-specific query string that counts all records
+	 * returned by an Query Builder query.
+	 *
+	 * @param	string
+	 * @param	bool	the reset clause
+	 * @return	int
+	 */
+	public function count_all_results($table = '', $reset = TRUE)
+	{
+		if ($table !== '')
+		{
+			$this->_track_aliases($table);
+			$this->from($table);
+		}
+
+		// ORDER BY usage is often problematic here (most notably
+		// on Microsoft SQL Server) and ultimately unnecessary
+		// for selecting COUNT(*) ...
+		$qb_orderby       = $this->qb_orderby;
+		$qb_cache_orderby = $this->qb_cache_orderby;
+		$this->qb_orderby = $this->qb_cache_orderby = array();
+
+		$result = ($this->qb_distinct === TRUE OR ! empty($this->qb_groupby) OR ! empty($this->qb_cache_groupby) OR ! empty($this->qb_having) OR $this->qb_limit OR $this->qb_offset)
+			? $this->query($this->_count_string.$this->protect_identifiers('numrows')."\nFROM (\n".$this->_compile_select()."\n) CI_count_all_results")
+			: $this->query($this->_compile_select($this->_count_string.$this->protect_identifiers('numrows')));
+
+		if ($reset === TRUE)
+		{
+			$this->_reset_select();
+		}
+		else
+		{
+			$this->qb_orderby       = $qb_orderby;
+			$this->qb_cache_orderby = $qb_cache_orderby;
+		}
+
+		if ($result->num_rows() === 0)
+		{
+			return 0;
+		}
+
+		$row = $result->row();
+		return (int) $row->numrows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * get_where()
+	 *
+	 * Allows the where clause, limit and offset to be added directly
+	 *
+	 * @param	string	$table
+	 * @param	string	$where
+	 * @param	int	$limit
+	 * @param	int	$offset
+	 * @return	CI_DB_result
+	 */
+	public function get_where($table = '', $where = NULL, $limit = NULL, $offset = NULL)
+	{
+		if ($table !== '')
+		{
+			$this->from($table);
+		}
+
+		if ($where !== NULL)
+		{
+			$this->where($where);
+		}
+
+		if ( ! empty($limit))
+		{
+			$this->limit($limit, $offset);
+		}
+
+		$result = $this->query($this->_compile_select());
+		$this->_reset_select();
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert_Batch
+	 *
+	 * Compiles batch insert strings and runs the queries
+	 *
+	 * @param	string	$table	Table to insert into
+	 * @param	array	$set 	An associative array of insert values
+	 * @param	bool	$escape	Whether to escape values and identifiers
+	 * @return	int	Number of rows inserted or FALSE on failure
+	 */
+	public function insert_batch($table, $set = NULL, $escape = NULL, $batch_size = 100)
+	{
+		if ($set === NULL)
+		{
+			if (empty($this->qb_set))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
+			}
+		}
+		else
+		{
+			if (empty($set))
+			{
+				return ($this->db_debug) ? $this->display_error('insert_batch() called with no data') : FALSE;
+			}
+
+			$this->set_insert_batch($set, '', $escape);
+		}
+
+		if (strlen($table) === 0)
+		{
+			if ( ! isset($this->qb_from[0]))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+			}
+
+			$table = $this->qb_from[0];
+		}
+
+		// Batch this baby
+		$affected_rows = 0;
+		for ($i = 0, $total = count($this->qb_set); $i < $total; $i += $batch_size)
+		{
+			if ($this->query($this->_insert_batch($this->protect_identifiers($table, TRUE, $escape, FALSE), $this->qb_keys, array_slice($this->qb_set, $i, $batch_size))))
+			{
+				$affected_rows += $this->affected_rows();
+			}
+		}
+
+		$this->_reset_write();
+		return $affected_rows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		return 'INSERT INTO '.$table.' ('.implode(', ', $keys).') VALUES '.implode(', ', $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The "set_insert_batch" function.  Allows key/value pairs to be set for batch inserts
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	bool
+	 * @return	CI_DB_query_builder
+	 */
+	public function set_insert_batch($key, $value = '', $escape = NULL)
+	{
+		$key = $this->_object_to_array_batch($key);
+
+		if ( ! is_array($key))
+		{
+			$key = array($key => $value);
+		}
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		$keys = array_keys($this->_object_to_array(reset($key)));
+		sort($keys);
+
+		foreach ($key as $row)
+		{
+			$row = $this->_object_to_array($row);
+			if (count(array_diff($keys, array_keys($row))) > 0 OR count(array_diff(array_keys($row), $keys)) > 0)
+			{
+				// batch function above returns an error on an empty array
+				$this->qb_set[] = array();
+				return;
+			}
+
+			ksort($row); // puts $row in the same order as our keys
+
+			if ($escape !== FALSE)
+			{
+				$clean = array();
+				foreach ($row as $value)
+				{
+					$clean[] = $this->escape($value);
+				}
+
+				$row = $clean;
+			}
+
+			$this->qb_set[] = '('.implode(',', $row).')';
+		}
+
+		foreach ($keys as $k)
+		{
+			$this->qb_keys[] = $this->protect_identifiers($k, FALSE, $escape);
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get INSERT query string
+	 *
+	 * Compiles an insert query and returns the sql
+	 *
+	 * @param	string	the table to insert into
+	 * @param	bool	TRUE: reset QB values; FALSE: leave QB values alone
+	 * @return	string
+	 */
+	public function get_compiled_insert($table = '', $reset = TRUE)
+	{
+		if ($this->_validate_insert($table) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$sql = $this->_insert(
+			$this->protect_identifiers(
+				$this->qb_from[0], TRUE, NULL, FALSE
+			),
+			array_keys($this->qb_set),
+			array_values($this->qb_set)
+		);
+
+		if ($reset === TRUE)
+		{
+			$this->_reset_write();
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert
+	 *
+	 * Compiles an insert string and runs the query
+	 *
+	 * @param	string	the table to insert data into
+	 * @param	array	an associative array of insert values
+	 * @param	bool	$escape	Whether to escape values and identifiers
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function insert($table = '', $set = NULL, $escape = NULL)
+	{
+		if ($set !== NULL)
+		{
+			$this->set($set, '', $escape);
+		}
+
+		if ($this->_validate_insert($table) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$sql = $this->_insert(
+			$this->protect_identifiers(
+				$this->qb_from[0], TRUE, $escape, FALSE
+			),
+			array_keys($this->qb_set),
+			array_values($this->qb_set)
+		);
+
+		$this->_reset_write();
+		return $this->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate Insert
+	 *
+	 * This method is used by both insert() and get_compiled_insert() to
+	 * validate that the there data is actually being set and that table
+	 * has been chosen to be inserted into.
+	 *
+	 * @param	string	the table to insert data into
+	 * @return	string
+	 */
+	protected function _validate_insert($table = '')
+	{
+		if (count($this->qb_set) === 0)
+		{
+			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
+		}
+
+		if ($table !== '')
+		{
+			$this->qb_from[0] = $table;
+		}
+		elseif ( ! isset($this->qb_from[0]))
+		{
+			return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Replace
+	 *
+	 * Compiles an replace into string and runs the query
+	 *
+	 * @param	string	the table to replace data into
+	 * @param	array	an associative array of insert values
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function replace($table = '', $set = NULL)
+	{
+		if ($set !== NULL)
+		{
+			$this->set($set);
+		}
+
+		if (count($this->qb_set) === 0)
+		{
+			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
+		}
+
+		if ($table === '')
+		{
+			if ( ! isset($this->qb_from[0]))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+			}
+
+			$table = $this->qb_from[0];
+		}
+
+		$sql = $this->_replace($this->protect_identifiers($table, TRUE, NULL, FALSE), array_keys($this->qb_set), array_values($this->qb_set));
+
+		$this->_reset_write();
+		return $this->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Replace statement
+	 *
+	 * Generates a platform-specific replace string from the supplied data
+	 *
+	 * @param	string	the table name
+	 * @param	array	the insert keys
+	 * @param	array	the insert values
+	 * @return	string
+	 */
+	protected function _replace($table, $keys, $values)
+	{
+		return 'REPLACE INTO '.$table.' ('.implode(', ', $keys).') VALUES ('.implode(', ', $values).')';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FROM tables
+	 *
+	 * Groups tables in FROM clauses if needed, so there is no confusion
+	 * about operator precedence.
+	 *
+	 * Note: This is only used (and overridden) by MySQL and CUBRID.
+	 *
+	 * @return	string
+	 */
+	protected function _from_tables()
+	{
+		return implode(', ', $this->qb_from);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get UPDATE query string
+	 *
+	 * Compiles an update query and returns the sql
+	 *
+	 * @param	string	the table to update
+	 * @param	bool	TRUE: reset QB values; FALSE: leave QB values alone
+	 * @return	string
+	 */
+	public function get_compiled_update($table = '', $reset = TRUE)
+	{
+		// Combine any cached components with the current statements
+		$this->_merge_cache();
+
+		if ($this->_validate_update($table) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$sql = $this->_update($this->qb_from[0], $this->qb_set);
+
+		if ($reset === TRUE)
+		{
+			$this->_reset_write();
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * UPDATE
+	 *
+	 * Compiles an update string and runs the query.
+	 *
+	 * @param	string	$table
+	 * @param	array	$set	An associative array of update values
+	 * @param	mixed	$where
+	 * @param	int	$limit
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function update($table = '', $set = NULL, $where = NULL, $limit = NULL)
+	{
+		// Combine any cached components with the current statements
+		$this->_merge_cache();
+
+		if ($set !== NULL)
+		{
+			$this->set($set);
+		}
+
+		if ($this->_validate_update($table) === FALSE)
+		{
+			return FALSE;
+		}
+
+		if ($where !== NULL)
+		{
+			$this->where($where);
+		}
+
+		if ( ! empty($limit))
+		{
+			$this->limit($limit);
+		}
+
+		$sql = $this->_update($this->qb_from[0], $this->qb_set);
+		$this->_reset_write();
+		return $this->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate Update
+	 *
+	 * This method is used by both update() and get_compiled_update() to
+	 * validate that data is actually being set and that a table has been
+	 * chosen to be update.
+	 *
+	 * @param	string	the table to update data on
+	 * @return	bool
+	 */
+	protected function _validate_update($table)
+	{
+		if (count($this->qb_set) === 0)
+		{
+			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
+		}
+
+		if ($table !== '')
+		{
+			$this->qb_from = array($this->protect_identifiers($table, TRUE, NULL, FALSE));
+		}
+		elseif ( ! isset($this->qb_from[0]))
+		{
+			return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update_Batch
+	 *
+	 * Compiles an update string and runs the query
+	 *
+	 * @param	string	the table to retrieve the results from
+	 * @param	array	an associative array of update values
+	 * @param	string	the where key
+	 * @return	int	number of rows affected or FALSE on failure
+	 */
+	public function update_batch($table, $set = NULL, $index = NULL, $batch_size = 100)
+	{
+		// Combine any cached components with the current statements
+		$this->_merge_cache();
+
+		if ($index === NULL)
+		{
+			return ($this->db_debug) ? $this->display_error('db_must_use_index') : FALSE;
+		}
+
+		if ($set === NULL)
+		{
+			if (empty($this->qb_set_ub))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
+			}
+		}
+		else
+		{
+			if (empty($set))
+			{
+				return ($this->db_debug) ? $this->display_error('update_batch() called with no data') : FALSE;
+			}
+
+			$this->set_update_batch($set, $index);
+		}
+
+		if (strlen($table) === 0)
+		{
+			if ( ! isset($this->qb_from[0]))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+			}
+
+			$table = $this->qb_from[0];
+		}
+
+		// Batch this baby
+		$affected_rows = 0;
+		for ($i = 0, $total = count($this->qb_set_ub); $i < $total; $i += $batch_size)
+		{
+			if ($this->query($this->_update_batch($this->protect_identifiers($table, TRUE, NULL, FALSE), array_slice($this->qb_set_ub, $i, $batch_size), $index)))
+			{
+				$affected_rows += $this->affected_rows();
+			}
+
+			$this->qb_where = array();
+		}
+
+		$this->_reset_write();
+		return $affected_rows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update_Batch statement
+	 *
+	 * Generates a platform-specific batch update string from the supplied data
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$values	Update data
+	 * @param	string	$index	WHERE key
+	 * @return	string
+	 */
+	protected function _update_batch($table, $values, $index)
+	{
+		$ids = array();
+		foreach ($values as $key => $val)
+		{
+			$ids[] = $val[$index]['value'];
+
+			foreach (array_keys($val) as $field)
+			{
+				if ($field !== $index)
+				{
+					$final[$val[$field]['field']][] = 'WHEN '.$val[$index]['field'].' = '.$val[$index]['value'].' THEN '.$val[$field]['value'];
+				}
+			}
+		}
+
+		$cases = '';
+		foreach ($final as $k => $v)
+		{
+			$cases .= $k." = CASE \n"
+				.implode("\n", $v)."\n"
+				.'ELSE '.$k.' END, ';
+		}
+
+		$this->where($val[$index]['field'].' IN('.implode(',', $ids).')', NULL, FALSE);
+
+		return 'UPDATE '.$table.' SET '.substr($cases, 0, -2).$this->_compile_wh('qb_where');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The "set_update_batch" function.  Allows key/value pairs to be set for batch updating
+	 *
+	 * @param	array
+	 * @param	string
+	 * @param	bool
+	 * @return	CI_DB_query_builder
+	 */
+	public function set_update_batch($key, $index = '', $escape = NULL)
+	{
+		$key = $this->_object_to_array_batch($key);
+
+		if ( ! is_array($key))
+		{
+			// @todo error
+		}
+
+		is_bool($escape) OR $escape = $this->_protect_identifiers;
+
+		foreach ($key as $k => $v)
+		{
+			$index_set = FALSE;
+			$clean = array();
+			foreach ($v as $k2 => $v2)
+			{
+				if ($k2 === $index)
+				{
+					$index_set = TRUE;
+				}
+
+				$clean[$k2] = array(
+					'field'  => $this->protect_identifiers($k2, FALSE, $escape),
+					'value'  => ($escape === FALSE ? $v2 : $this->escape($v2))
+				);
+			}
+
+			if ($index_set === FALSE)
+			{
+				return $this->display_error('db_batch_missing_index');
+			}
+
+			$this->qb_set_ub[] = $clean;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Empty Table
+	 *
+	 * Compiles a delete string and runs "DELETE FROM table"
+	 *
+	 * @param	string	the table to empty
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function empty_table($table = '')
+	{
+		if ($table === '')
+		{
+			if ( ! isset($this->qb_from[0]))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+			}
+
+			$table = $this->qb_from[0];
+		}
+		else
+		{
+			$table = $this->protect_identifiers($table, TRUE, NULL, FALSE);
+		}
+
+		$sql = $this->_delete($table);
+		$this->_reset_write();
+		return $this->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate
+	 *
+	 * Compiles a truncate string and runs the query
+	 * If the database does not support the truncate() command
+	 * This function maps to "DELETE FROM table"
+	 *
+	 * @param	string	the table to truncate
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function truncate($table = '')
+	{
+		if ($table === '')
+		{
+			if ( ! isset($this->qb_from[0]))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+			}
+
+			$table = $this->qb_from[0];
+		}
+		else
+		{
+			$table = $this->protect_identifiers($table, TRUE, NULL, FALSE);
+		}
+
+		$sql = $this->_truncate($table);
+		$this->_reset_write();
+		return $this->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the truncate() command,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	the table name
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get DELETE query string
+	 *
+	 * Compiles a delete query string and returns the sql
+	 *
+	 * @param	string	the table to delete from
+	 * @param	bool	TRUE: reset QB values; FALSE: leave QB values alone
+	 * @return	string
+	 */
+	public function get_compiled_delete($table = '', $reset = TRUE)
+	{
+		$this->return_delete_sql = TRUE;
+		$sql = $this->delete($table, '', NULL, $reset);
+		$this->return_delete_sql = FALSE;
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete
+	 *
+	 * Compiles a delete string and runs the query
+	 *
+	 * @param	mixed	the table(s) to delete from. String or array
+	 * @param	mixed	the where clause
+	 * @param	mixed	the limit clause
+	 * @param	bool
+	 * @return	mixed
+	 */
+	public function delete($table = '', $where = '', $limit = NULL, $reset_data = TRUE)
+	{
+		// Combine any cached components with the current statements
+		$this->_merge_cache();
+
+		if ($table === '')
+		{
+			if ( ! isset($this->qb_from[0]))
+			{
+				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
+			}
+
+			$table = $this->qb_from[0];
+		}
+		elseif (is_array($table))
+		{
+			empty($where) && $reset_data = FALSE;
+
+			foreach ($table as $single_table)
+			{
+				$this->delete($single_table, $where, $limit, $reset_data);
+			}
+
+			return;
+		}
+		else
+		{
+			$table = $this->protect_identifiers($table, TRUE, NULL, FALSE);
+		}
+
+		if ($where !== '')
+		{
+			$this->where($where);
+		}
+
+		if ( ! empty($limit))
+		{
+			$this->limit($limit);
+		}
+
+		if (count($this->qb_where) === 0)
+		{
+			return ($this->db_debug) ? $this->display_error('db_del_must_use_where') : FALSE;
+		}
+
+		$sql = $this->_delete($table);
+		if ($reset_data)
+		{
+			$this->_reset_write();
+		}
+
+		return ($this->return_delete_sql === TRUE) ? $sql : $this->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	the table name
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		return 'DELETE FROM '.$table.$this->_compile_wh('qb_where')
+			.($this->qb_limit !== FALSE ? ' LIMIT '.$this->qb_limit : '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * DB Prefix
+	 *
+	 * Prepends a database prefix if one exists in configuration
+	 *
+	 * @param	string	the table
+	 * @return	string
+	 */
+	public function dbprefix($table = '')
+	{
+		if ($table === '')
+		{
+			$this->display_error('db_table_name_required');
+		}
+
+		return $this->dbprefix.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set DB Prefix
+	 *
+	 * Set's the DB Prefix to something new without needing to reconnect
+	 *
+	 * @param	string	the prefix
+	 * @return	string
+	 */
+	public function set_dbprefix($prefix = '')
+	{
+		return $this->dbprefix = $prefix;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Track Aliases
+	 *
+	 * Used to track SQL statements written with aliased tables.
+	 *
+	 * @param	string	The table to inspect
+	 * @return	string
+	 */
+	protected function _track_aliases($table)
+	{
+		if (is_array($table))
+		{
+			foreach ($table as $t)
+			{
+				$this->_track_aliases($t);
+			}
+			return;
+		}
+
+		// Does the string contain a comma?  If so, we need to separate
+		// the string into discreet statements
+		if (strpos($table, ',') !== FALSE)
+		{
+			return $this->_track_aliases(explode(',', $table));
+		}
+
+		// if a table alias is used we can recognize it by a space
+		if (strpos($table, ' ') !== FALSE)
+		{
+			// if the alias is written with the AS keyword, remove it
+			$table = preg_replace('/\s+AS\s+/i', ' ', $table);
+
+			// Grab the alias
+			$table = trim(strrchr($table, ' '));
+
+			// Store the alias, if it doesn't already exist
+			if ( ! in_array($table, $this->qb_aliased_tables, TRUE))
+			{
+				$this->qb_aliased_tables[] = $table;
+				if ($this->qb_caching === TRUE && ! in_array($table, $this->qb_cache_aliased_tables, TRUE))
+				{
+					$this->qb_cache_aliased_tables[] = $table;
+					$this->qb_cache_exists[] = 'aliased_tables';
+				}
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile the SELECT statement
+	 *
+	 * Generates a query string based on which functions were used.
+	 * Should not be called directly.
+	 *
+	 * @param	bool	$select_override
+	 * @return	string
+	 */
+	protected function _compile_select($select_override = FALSE)
+	{
+		// Combine any cached components with the current statements
+		$this->_merge_cache();
+
+		// Write the "select" portion of the query
+		if ($select_override !== FALSE)
+		{
+			$sql = $select_override;
+		}
+		else
+		{
+			$sql = ( ! $this->qb_distinct) ? 'SELECT ' : 'SELECT DISTINCT ';
+
+			if (count($this->qb_select) === 0)
+			{
+				$sql .= '*';
+			}
+			else
+			{
+				// Cycle through the "select" portion of the query and prep each column name.
+				// The reason we protect identifiers here rather than in the select() function
+				// is because until the user calls the from() function we don't know if there are aliases
+				foreach ($this->qb_select as $key => $val)
+				{
+					$no_escape = isset($this->qb_no_escape[$key]) ? $this->qb_no_escape[$key] : NULL;
+					$this->qb_select[$key] = $this->protect_identifiers($val, FALSE, $no_escape);
+				}
+
+				$sql .= implode(', ', $this->qb_select);
+			}
+		}
+
+		// Write the "FROM" portion of the query
+		if (count($this->qb_from) > 0)
+		{
+			$sql .= "\nFROM ".$this->_from_tables();
+		}
+
+		// Write the "JOIN" portion of the query
+		if (count($this->qb_join) > 0)
+		{
+			$sql .= "\n".implode("\n", $this->qb_join);
+		}
+
+		$sql .= $this->_compile_wh('qb_where')
+			.$this->_compile_group_by()
+			.$this->_compile_wh('qb_having')
+			.$this->_compile_order_by(); // ORDER BY
+
+		// LIMIT
+		if ($this->qb_limit !== FALSE OR $this->qb_offset)
+		{
+			return $this->_limit($sql."\n");
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile WHERE, HAVING statements
+	 *
+	 * Escapes identifiers in WHERE and HAVING statements at execution time.
+	 *
+	 * Required so that aliases are tracked properly, regardless of whether
+	 * where(), or_where(), having(), or_having are called prior to from(),
+	 * join() and dbprefix is added only if needed.
+	 *
+	 * @param	string	$qb_key	'qb_where' or 'qb_having'
+	 * @return	string	SQL statement
+	 */
+	protected function _compile_wh($qb_key)
+	{
+		if (count($this->$qb_key) > 0)
+		{
+			for ($i = 0, $c = count($this->$qb_key); $i < $c; $i++)
+			{
+				// Is this condition already compiled?
+				if (is_string($this->{$qb_key}[$i]))
+				{
+					continue;
+				}
+				elseif ($this->{$qb_key}[$i]['escape'] === FALSE)
+				{
+					$this->{$qb_key}[$i] = $this->{$qb_key}[$i]['condition'].(isset($this->{$qb_key}[$i]['value']) ? ' '.$this->{$qb_key}[$i]['value'] : '');
+					continue;
+				}
+
+				// Split multiple conditions
+				$conditions = preg_split(
+					'/((?:^|\s+)AND\s+|(?:^|\s+)OR\s+)/i',
+					$this->{$qb_key}[$i]['condition'],
+					-1,
+					PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY
+				);
+
+				for ($ci = 0, $cc = count($conditions); $ci < $cc; $ci++)
+				{
+					if (($op = $this->_get_operator($conditions[$ci])) === FALSE
+						OR ! preg_match('/^(\(?)(.*)('.preg_quote($op, '/').')\s*(.*(?<!\)))?(\)?)$/i', $conditions[$ci], $matches))
+					{
+						continue;
+					}
+
+					// $matches = array(
+					//	0 => '(test <= foo)',	/* the whole thing */
+					//	1 => '(',		/* optional */
+					//	2 => 'test',		/* the field name */
+					//	3 => ' <= ',		/* $op */
+					//	4 => 'foo',		/* optional, if $op is e.g. 'IS NULL' */
+					//	5 => ')'		/* optional */
+					// );
+
+					if ( ! empty($matches[4]))
+					{
+						$this->_is_literal($matches[4]) OR $matches[4] = $this->protect_identifiers(trim($matches[4]));
+						$matches[4] = ' '.$matches[4];
+					}
+
+					$conditions[$ci] = $matches[1].$this->protect_identifiers(trim($matches[2]))
+						.' '.trim($matches[3]).$matches[4].$matches[5];
+				}
+
+				$this->{$qb_key}[$i] = implode('', $conditions).(isset($this->{$qb_key}[$i]['value']) ? ' '.$this->{$qb_key}[$i]['value'] : '');
+			}
+
+			return ($qb_key === 'qb_having' ? "\nHAVING " : "\nWHERE ")
+				.implode("\n", $this->$qb_key);
+		}
+
+		return '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile GROUP BY
+	 *
+	 * Escapes identifiers in GROUP BY statements at execution time.
+	 *
+	 * Required so that aliases are tracked properly, regardless of whether
+	 * group_by() is called prior to from(), join() and dbprefix is added
+	 * only if needed.
+	 *
+	 * @return	string	SQL statement
+	 */
+	protected function _compile_group_by()
+	{
+		if (count($this->qb_groupby) > 0)
+		{
+			for ($i = 0, $c = count($this->qb_groupby); $i < $c; $i++)
+			{
+				// Is it already compiled?
+				if (is_string($this->qb_groupby[$i]))
+				{
+					continue;
+				}
+
+				$this->qb_groupby[$i] = ($this->qb_groupby[$i]['escape'] === FALSE OR $this->_is_literal($this->qb_groupby[$i]['field']))
+					? $this->qb_groupby[$i]['field']
+					: $this->protect_identifiers($this->qb_groupby[$i]['field']);
+			}
+
+			return "\nGROUP BY ".implode(', ', $this->qb_groupby);
+		}
+
+		return '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile ORDER BY
+	 *
+	 * Escapes identifiers in ORDER BY statements at execution time.
+	 *
+	 * Required so that aliases are tracked properly, regardless of whether
+	 * order_by() is called prior to from(), join() and dbprefix is added
+	 * only if needed.
+	 *
+	 * @return	string	SQL statement
+	 */
+	protected function _compile_order_by()
+	{
+		if (empty($this->qb_orderby))
+		{
+			return '';
+		}
+
+		for ($i = 0, $c = count($this->qb_orderby); $i < $c; $i++)
+		{
+			if (is_string($this->qb_orderby[$i]))
+			{
+				continue;
+			}
+
+			if ($this->qb_orderby[$i]['escape'] !== FALSE && ! $this->_is_literal($this->qb_orderby[$i]['field']))
+			{
+				$this->qb_orderby[$i]['field'] = $this->protect_identifiers($this->qb_orderby[$i]['field']);
+			}
+
+			$this->qb_orderby[$i] = $this->qb_orderby[$i]['field'].$this->qb_orderby[$i]['direction'];
+		}
+
+		return "\nORDER BY ".implode(', ', $this->qb_orderby);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Object to Array
+	 *
+	 * Takes an object as input and converts the class variables to array key/vals
+	 *
+	 * @param	object
+	 * @return	array
+	 */
+	protected function _object_to_array($object)
+	{
+		if ( ! is_object($object))
+		{
+			return $object;
+		}
+
+		$array = array();
+		foreach (get_object_vars($object) as $key => $val)
+		{
+			// There are some built in keys we need to ignore for this conversion
+			if ( ! is_object($val) && ! is_array($val) && $key !== '_parent_name')
+			{
+				$array[$key] = $val;
+			}
+		}
+
+		return $array;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Object to Array
+	 *
+	 * Takes an object as input and converts the class variables to array key/vals
+	 *
+	 * @param	object
+	 * @return	array
+	 */
+	protected function _object_to_array_batch($object)
+	{
+		if ( ! is_object($object))
+		{
+			return $object;
+		}
+
+		$array = array();
+		$out = get_object_vars($object);
+		$fields = array_keys($out);
+
+		foreach ($fields as $val)
+		{
+			// There are some built in keys we need to ignore for this conversion
+			if ($val !== '_parent_name')
+			{
+				$i = 0;
+				foreach ($out[$val] as $data)
+				{
+					$array[$i++][$val] = $data;
+				}
+			}
+		}
+
+		return $array;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Start Cache
+	 *
+	 * Starts QB caching
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function start_cache()
+	{
+		$this->qb_caching = TRUE;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Stop Cache
+	 *
+	 * Stops QB caching
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function stop_cache()
+	{
+		$this->qb_caching = FALSE;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Flush Cache
+	 *
+	 * Empties the QB cache
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function flush_cache()
+	{
+		$this->_reset_run(array(
+			'qb_cache_select'		=> array(),
+			'qb_cache_from'			=> array(),
+			'qb_cache_join'			=> array(),
+			'qb_cache_where'		=> array(),
+			'qb_cache_groupby'		=> array(),
+			'qb_cache_having'		=> array(),
+			'qb_cache_orderby'		=> array(),
+			'qb_cache_set'			=> array(),
+			'qb_cache_exists'		=> array(),
+			'qb_cache_no_escape'	=> array(),
+			'qb_cache_aliased_tables'	=> array()
+		));
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Merge Cache
+	 *
+	 * When called, this function merges any cached QB arrays with
+	 * locally called ones.
+	 *
+	 * @return	void
+	 */
+	protected function _merge_cache()
+	{
+		if (count($this->qb_cache_exists) === 0)
+		{
+			return;
+		}
+		elseif (in_array('select', $this->qb_cache_exists, TRUE))
+		{
+			$qb_no_escape = $this->qb_cache_no_escape;
+		}
+
+		foreach (array_unique($this->qb_cache_exists) as $val) // select, from, etc.
+		{
+			$qb_variable	= 'qb_'.$val;
+			$qb_cache_var	= 'qb_cache_'.$val;
+			$qb_new 	= $this->$qb_cache_var;
+
+			for ($i = 0, $c = count($this->$qb_variable); $i < $c; $i++)
+			{
+				if ( ! in_array($this->{$qb_variable}[$i], $qb_new, TRUE))
+				{
+					$qb_new[] = $this->{$qb_variable}[$i];
+					if ($val === 'select')
+					{
+						$qb_no_escape[] = $this->qb_no_escape[$i];
+					}
+				}
+			}
+
+			$this->$qb_variable = $qb_new;
+			if ($val === 'select')
+			{
+				$this->qb_no_escape = $qb_no_escape;
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is literal
+	 *
+	 * Determines if a string represents a literal value or a field name
+	 *
+	 * @param	string	$str
+	 * @return	bool
+	 */
+	protected function _is_literal($str)
+	{
+		$str = trim($str);
+
+		if (empty($str) OR ctype_digit($str) OR (string) (float) $str === $str OR in_array(strtoupper($str), array('TRUE', 'FALSE'), TRUE))
+		{
+			return TRUE;
+		}
+
+		static $_str;
+
+		if (empty($_str))
+		{
+			$_str = ($this->_escape_char !== '"')
+				? array('"', "'") : array("'");
+		}
+
+		return in_array($str[0], $_str, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reset Query Builder values.
+	 *
+	 * Publicly-visible method to reset the QB values.
+	 *
+	 * @return	CI_DB_query_builder
+	 */
+	public function reset_query()
+	{
+		$this->_reset_select();
+		$this->_reset_write();
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Resets the query builder values.  Called by the get() function
+	 *
+	 * @param	array	An array of fields to reset
+	 * @return	void
+	 */
+	protected function _reset_run($qb_reset_items)
+	{
+		foreach ($qb_reset_items as $item => $default_value)
+		{
+			$this->$item = $default_value;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Resets the query builder values.  Called by the get() function
+	 *
+	 * @return	void
+	 */
+	protected function _reset_select()
+	{
+		$this->_reset_run(array(
+			'qb_select'		=> array(),
+			'qb_from'		=> array(),
+			'qb_join'		=> array(),
+			'qb_where'		=> array(),
+			'qb_groupby'		=> array(),
+			'qb_having'		=> array(),
+			'qb_orderby'		=> array(),
+			'qb_aliased_tables'	=> array(),
+			'qb_no_escape'		=> array(),
+			'qb_distinct'		=> FALSE,
+			'qb_limit'		=> FALSE,
+			'qb_offset'		=> FALSE
+		));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Resets the query builder "write" values.
+	 *
+	 * Called by the insert() update() insert_batch() update_batch() and delete() functions
+	 *
+	 * @return	void
+	 */
+	protected function _reset_write()
+	{
+		$this->_reset_run(array(
+			'qb_set'	=> array(),
+			'qb_set_ub'	=> array(),
+			'qb_from'	=> array(),
+			'qb_join'	=> array(),
+			'qb_where'	=> array(),
+			'qb_orderby'	=> array(),
+			'qb_keys'	=> array(),
+			'qb_limit'	=> FALSE
+		));
+	}
+
+}
diff --git a/system/database/DB_result.php b/system/database/DB_result.php
new file mode 100644
index 00000000..b481de47
--- /dev/null
+++ b/system/database/DB_result.php
@@ -0,0 +1,665 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Database Result Class
+ *
+ * This is the platform-independent result class.
+ * This class will not be called directly. Rather, the adapter
+ * class for the specific database will extend and instantiate it.
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_result {
+
+	/**
+	 * Connection ID
+	 *
+	 * @var	resource|object
+	 */
+	public $conn_id;
+
+	/**
+	 * Result ID
+	 *
+	 * @var	resource|object
+	 */
+	public $result_id;
+
+	/**
+	 * Result Array
+	 *
+	 * @var	array[]
+	 */
+	public $result_array			= array();
+
+	/**
+	 * Result Object
+	 *
+	 * @var	object[]
+	 */
+	public $result_object			= array();
+
+	/**
+	 * Custom Result Object
+	 *
+	 * @var	object[]
+	 */
+	public $custom_result_object		= array();
+
+	/**
+	 * Current Row index
+	 *
+	 * @var	int
+	 */
+	public $current_row			= 0;
+
+	/**
+	 * Number of rows
+	 *
+	 * @var	int
+	 */
+	public $num_rows;
+
+	/**
+	 * Row data
+	 *
+	 * @var	array
+	 */
+	public $row_data;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	object	$driver_object
+	 * @return	void
+	 */
+	public function __construct(&$driver_object)
+	{
+		$this->conn_id = $driver_object->conn_id;
+		$this->result_id = $driver_object->result_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		if (is_int($this->num_rows))
+		{
+			return $this->num_rows;
+		}
+		elseif (count($this->result_array) > 0)
+		{
+			return $this->num_rows = count($this->result_array);
+		}
+		elseif (count($this->result_object) > 0)
+		{
+			return $this->num_rows = count($this->result_object);
+		}
+
+		return $this->num_rows = count($this->result_array());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Query result. Acts as a wrapper function for the following functions.
+	 *
+	 * @param	string	$type	'object', 'array' or a custom class name
+	 * @return	array
+	 */
+	public function result($type = 'object')
+	{
+		if ($type === 'array')
+		{
+			return $this->result_array();
+		}
+		elseif ($type === 'object')
+		{
+			return $this->result_object();
+		}
+
+		return $this->custom_result_object($type);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Custom query result.
+	 *
+	 * @param	string	$class_name
+	 * @return	array
+	 */
+	public function custom_result_object($class_name)
+	{
+		if (isset($this->custom_result_object[$class_name]))
+		{
+			return $this->custom_result_object[$class_name];
+		}
+		elseif ( ! $this->result_id OR $this->num_rows === 0)
+		{
+			return array();
+		}
+
+		// Don't fetch the result set again if we already have it
+		$_data = NULL;
+		if (($c = count($this->result_array)) > 0)
+		{
+			$_data = 'result_array';
+		}
+		elseif (($c = count($this->result_object)) > 0)
+		{
+			$_data = 'result_object';
+		}
+
+		if ($_data !== NULL)
+		{
+			for ($i = 0; $i < $c; $i++)
+			{
+				$this->custom_result_object[$class_name][$i] = new $class_name();
+
+				foreach ($this->{$_data}[$i] as $key => $value)
+				{
+					$this->custom_result_object[$class_name][$i]->$key = $value;
+				}
+			}
+
+			return $this->custom_result_object[$class_name];
+		}
+
+		is_null($this->row_data) OR $this->data_seek(0);
+		$this->custom_result_object[$class_name] = array();
+
+		while ($row = $this->_fetch_object($class_name))
+		{
+			$this->custom_result_object[$class_name][] = $row;
+		}
+
+		return $this->custom_result_object[$class_name];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Query result. "object" version.
+	 *
+	 * @return	array
+	 */
+	public function result_object()
+	{
+		if (count($this->result_object) > 0)
+		{
+			return $this->result_object;
+		}
+
+		// In the event that query caching is on, the result_id variable
+		// will not be a valid resource so we'll simply return an empty
+		// array.
+		if ( ! $this->result_id OR $this->num_rows === 0)
+		{
+			return array();
+		}
+
+		if (($c = count($this->result_array)) > 0)
+		{
+			for ($i = 0; $i < $c; $i++)
+			{
+				$this->result_object[$i] = (object) $this->result_array[$i];
+			}
+
+			return $this->result_object;
+		}
+
+		is_null($this->row_data) OR $this->data_seek(0);
+		while ($row = $this->_fetch_object())
+		{
+			$this->result_object[] = $row;
+		}
+
+		return $this->result_object;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Query result. "array" version.
+	 *
+	 * @return	array
+	 */
+	public function result_array()
+	{
+		if (count($this->result_array) > 0)
+		{
+			return $this->result_array;
+		}
+
+		// In the event that query caching is on, the result_id variable
+		// will not be a valid resource so we'll simply return an empty
+		// array.
+		if ( ! $this->result_id OR $this->num_rows === 0)
+		{
+			return array();
+		}
+
+		if (($c = count($this->result_object)) > 0)
+		{
+			for ($i = 0; $i < $c; $i++)
+			{
+				$this->result_array[$i] = (array) $this->result_object[$i];
+			}
+
+			return $this->result_array;
+		}
+
+		is_null($this->row_data) OR $this->data_seek(0);
+		while ($row = $this->_fetch_assoc())
+		{
+			$this->result_array[] = $row;
+		}
+
+		return $this->result_array;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Row
+	 *
+	 * A wrapper method.
+	 *
+	 * @param	mixed	$n
+	 * @param	string	$type	'object' or 'array'
+	 * @return	mixed
+	 */
+	public function row($n = 0, $type = 'object')
+	{
+		if ( ! is_numeric($n))
+		{
+			// We cache the row data for subsequent uses
+			is_array($this->row_data) OR $this->row_data = $this->row_array(0);
+
+			// array_key_exists() instead of isset() to allow for NULL values
+			if (empty($this->row_data) OR ! array_key_exists($n, $this->row_data))
+			{
+				return NULL;
+			}
+
+			return $this->row_data[$n];
+		}
+
+		if ($type === 'object') return $this->row_object($n);
+		elseif ($type === 'array') return $this->row_array($n);
+
+		return $this->custom_row_object($n, $type);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Assigns an item into a particular column slot
+	 *
+	 * @param	mixed	$key
+	 * @param	mixed	$value
+	 * @return	void
+	 */
+	public function set_row($key, $value = NULL)
+	{
+		// We cache the row data for subsequent uses
+		if ( ! is_array($this->row_data))
+		{
+			$this->row_data = $this->row_array(0);
+		}
+
+		if (is_array($key))
+		{
+			foreach ($key as $k => $v)
+			{
+				$this->row_data[$k] = $v;
+			}
+			return;
+		}
+
+		if ($key !== '' && $value !== NULL)
+		{
+			$this->row_data[$key] = $value;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns a single result row - custom object version
+	 *
+	 * @param	int	$n
+	 * @param	string	$type
+	 * @return	object
+	 */
+	public function custom_row_object($n, $type)
+	{
+		isset($this->custom_result_object[$type]) OR $this->custom_result_object[$type] = $this->custom_result_object($type);
+
+		if (count($this->custom_result_object[$type]) === 0)
+		{
+			return NULL;
+		}
+
+		if ($n !== $this->current_row && isset($this->custom_result_object[$type][$n]))
+		{
+			$this->current_row = $n;
+		}
+
+		return $this->custom_result_object[$type][$this->current_row];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns a single result row - object version
+	 *
+	 * @param	int	$n
+	 * @return	object
+	 */
+	public function row_object($n = 0)
+	{
+		$result = $this->result_object();
+		if (count($result) === 0)
+		{
+			return NULL;
+		}
+
+		if ($n !== $this->current_row && isset($result[$n]))
+		{
+			$this->current_row = $n;
+		}
+
+		return $result[$this->current_row];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns a single result row - array version
+	 *
+	 * @param	int	$n
+	 * @return	array
+	 */
+	public function row_array($n = 0)
+	{
+		$result = $this->result_array();
+		if (count($result) === 0)
+		{
+			return NULL;
+		}
+
+		if ($n !== $this->current_row && isset($result[$n]))
+		{
+			$this->current_row = $n;
+		}
+
+		return $result[$this->current_row];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the "first" row
+	 *
+	 * @param	string	$type
+	 * @return	mixed
+	 */
+	public function first_row($type = 'object')
+	{
+		$result = $this->result($type);
+		return (count($result) === 0) ? NULL : $result[0];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the "last" row
+	 *
+	 * @param	string	$type
+	 * @return	mixed
+	 */
+	public function last_row($type = 'object')
+	{
+		$result = $this->result($type);
+		return (count($result) === 0) ? NULL : $result[count($result) - 1];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the "next" row
+	 *
+	 * @param	string	$type
+	 * @return	mixed
+	 */
+	public function next_row($type = 'object')
+	{
+		$result = $this->result($type);
+		if (count($result) === 0)
+		{
+			return NULL;
+		}
+
+		return isset($result[$this->current_row + 1])
+			? $result[++$this->current_row]
+			: NULL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns the "previous" row
+	 *
+	 * @param	string	$type
+	 * @return	mixed
+	 */
+	public function previous_row($type = 'object')
+	{
+		$result = $this->result($type);
+		if (count($result) === 0)
+		{
+			return NULL;
+		}
+
+		if (isset($result[$this->current_row - 1]))
+		{
+			--$this->current_row;
+		}
+		return $result[$this->current_row];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an unbuffered row and move pointer to next row
+	 *
+	 * @param	string	$type	'array', 'object' or a custom class name
+	 * @return	mixed
+	 */
+	public function unbuffered_row($type = 'object')
+	{
+		if ($type === 'array')
+		{
+			return $this->_fetch_assoc();
+		}
+		elseif ($type === 'object')
+		{
+			return $this->_fetch_object();
+		}
+
+		return $this->_fetch_object($type);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The following methods are normally overloaded by the identically named
+	 * methods in the platform-specific driver -- except when query caching
+	 * is used. When caching is enabled we do not load the other driver.
+	 * These functions are primarily here to prevent undefined function errors
+	 * when a cached result object is in use. They are not otherwise fully
+	 * operational due to the unavailability of the database resource IDs with
+	 * cached results.
+	 */
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return 0;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names.
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		return array();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data.
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		return array();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		$this->result_id = FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @param	int	$n
+	 * @return	bool
+	 */
+	public function data_seek($n = 0)
+	{
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array.
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return array();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object.
+	 *
+	 * Overridden by driver result classes.
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return new $class_name();
+	}
+
+}
diff --git a/system/database/DB_utility.php b/system/database/DB_utility.php
new file mode 100644
index 00000000..a1450f09
--- /dev/null
+++ b/system/database/DB_utility.php
@@ -0,0 +1,414 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Database Utility Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+abstract class CI_DB_utility {
+
+	/**
+	 * Database object
+	 *
+	 * @var	object
+	 */
+	protected $db;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases		= FALSE;
+
+	/**
+	 * OPTIMIZE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_optimize_table	= FALSE;
+
+	/**
+	 * REPAIR TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_repair_table	= FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$db	Database object
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		$this->db =& $db;
+		log_message('info', 'Database Utility Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List databases
+	 *
+	 * @return	array
+	 */
+	public function list_databases()
+	{
+		// Is there a cached result?
+		if (isset($this->db->data_cache['db_names']))
+		{
+			return $this->db->data_cache['db_names'];
+		}
+		elseif ($this->_list_databases === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		$this->db->data_cache['db_names'] = array();
+
+		$query = $this->db->query($this->_list_databases);
+		if ($query === FALSE)
+		{
+			return $this->db->data_cache['db_names'];
+		}
+
+		for ($i = 0, $query = $query->result_array(), $c = count($query); $i < $c; $i++)
+		{
+			$this->db->data_cache['db_names'][] = current($query[$i]);
+		}
+
+		return $this->db->data_cache['db_names'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determine if a particular database exists
+	 *
+	 * @param	string	$database_name
+	 * @return	bool
+	 */
+	public function database_exists($database_name)
+	{
+		return in_array($database_name, $this->list_databases());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Optimize Table
+	 *
+	 * @param	string	$table_name
+	 * @return	mixed
+	 */
+	public function optimize_table($table_name)
+	{
+		if ($this->_optimize_table === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		$query = $this->db->query(sprintf($this->_optimize_table, $this->db->escape_identifiers($table_name)));
+		if ($query !== FALSE)
+		{
+			$query = $query->result_array();
+			return current($query);
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Optimize Database
+	 *
+	 * @return	mixed
+	 */
+	public function optimize_database()
+	{
+		if ($this->_optimize_table === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		$result = array();
+		foreach ($this->db->list_tables() as $table_name)
+		{
+			$res = $this->db->query(sprintf($this->_optimize_table, $this->db->escape_identifiers($table_name)));
+			if (is_bool($res))
+			{
+				return $res;
+			}
+
+			// Build the result array...
+			$res = $res->result_array();
+			$res = current($res);
+			$key = str_replace($this->db->database.'.', '', current($res));
+			$keys = array_keys($res);
+			unset($res[$keys[0]]);
+
+			$result[$key] = $res;
+		}
+
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Repair Table
+	 *
+	 * @param	string	$table_name
+	 * @return	mixed
+	 */
+	public function repair_table($table_name)
+	{
+		if ($this->_repair_table === FALSE)
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		}
+
+		$query = $this->db->query(sprintf($this->_repair_table, $this->db->escape_identifiers($table_name)));
+		if (is_bool($query))
+		{
+			return $query;
+		}
+
+		$query = $query->result_array();
+		return current($query);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate CSV from a query result object
+	 *
+	 * @param	object	$query		Query result object
+	 * @param	string	$delim		Delimiter (default: ,)
+	 * @param	string	$newline	Newline character (default: \n)
+	 * @param	string	$enclosure	Enclosure (default: ")
+	 * @return	string
+	 */
+	public function csv_from_result(CI_DB_result $query, $delim = ',', $newline = "\n", $enclosure = '"')
+	{
+		$out = '';
+		// First generate the headings from the table column names
+		foreach ($query->list_fields() as $name)
+		{
+			$out .= $enclosure.str_replace($enclosure, $enclosure.$enclosure, $name).$enclosure.$delim;
+		}
+
+		$out = substr($out, 0, -strlen($delim)).$newline;
+
+		// Next blast through the result array and build out the rows
+		while ($row = $query->unbuffered_row('array'))
+		{
+			$line = array();
+			foreach ($row as $item)
+			{
+				$line[] = $enclosure.str_replace($enclosure, $enclosure.$enclosure, $item).$enclosure;
+			}
+			$out .= implode($delim, $line).$newline;
+		}
+
+		return $out;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate XML data from a query result object
+	 *
+	 * @param	object	$query	Query result object
+	 * @param	array	$params	Any preferences
+	 * @return	string
+	 */
+	public function xml_from_result(CI_DB_result $query, $params = array())
+	{
+		// Set our default values
+		foreach (array('root' => 'root', 'element' => 'element', 'newline' => "\n", 'tab' => "\t") as $key => $val)
+		{
+			if ( ! isset($params[$key]))
+			{
+				$params[$key] = $val;
+			}
+		}
+
+		// Create variables for convenience
+		extract($params);
+
+		// Load the xml helper
+		get_instance()->load->helper('xml');
+
+		// Generate the result
+		$xml = '<'.$root.'>'.$newline;
+		while ($row = $query->unbuffered_row())
+		{
+			$xml .= $tab.'<'.$element.'>'.$newline;
+			foreach ($row as $key => $val)
+			{
+				$xml .= $tab.$tab.'<'.$key.'>'.xml_convert($val).'</'.$key.'>'.$newline;
+			}
+			$xml .= $tab.'</'.$element.'>'.$newline;
+		}
+
+		return $xml.'</'.$root.'>'.$newline;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database Backup
+	 *
+	 * @param	array	$params
+	 * @return	string
+	 */
+	public function backup($params = array())
+	{
+		// If the parameters have not been submitted as an
+		// array then we know that it is simply the table
+		// name, which is a valid short cut.
+		if (is_string($params))
+		{
+			$params = array('tables' => $params);
+		}
+
+		// Set up our default preferences
+		$prefs = array(
+			'tables'		=> array(),
+			'ignore'		=> array(),
+			'filename'		=> '',
+			'format'		=> 'gzip', // gzip, zip, txt
+			'add_drop'		=> TRUE,
+			'add_insert'		=> TRUE,
+			'newline'		=> "\n",
+			'foreign_key_checks'	=> TRUE
+		);
+
+		// Did the user submit any preferences? If so set them....
+		if (count($params) > 0)
+		{
+			foreach ($prefs as $key => $val)
+			{
+				if (isset($params[$key]))
+				{
+					$prefs[$key] = $params[$key];
+				}
+			}
+		}
+
+		// Are we backing up a complete database or individual tables?
+		// If no table names were submitted we'll fetch the entire table list
+		if (count($prefs['tables']) === 0)
+		{
+			$prefs['tables'] = $this->db->list_tables();
+		}
+
+		// Validate the format
+		if ( ! in_array($prefs['format'], array('gzip', 'zip', 'txt'), TRUE))
+		{
+			$prefs['format'] = 'txt';
+		}
+
+		// Is the encoder supported? If not, we'll either issue an
+		// error or use plain text depending on the debug settings
+		if (($prefs['format'] === 'gzip' && ! function_exists('gzencode'))
+			OR ($prefs['format'] === 'zip' && ! function_exists('gzcompress')))
+		{
+			if ($this->db->db_debug)
+			{
+				return $this->db->display_error('db_unsupported_compression');
+			}
+
+			$prefs['format'] = 'txt';
+		}
+
+		// Was a Zip file requested?
+		if ($prefs['format'] === 'zip')
+		{
+			// Set the filename if not provided (only needed with Zip files)
+			if ($prefs['filename'] === '')
+			{
+				$prefs['filename'] = (count($prefs['tables']) === 1 ? $prefs['tables'] : $this->db->database)
+							.date('Y-m-d_H-i', time()).'.sql';
+			}
+			else
+			{
+				// If they included the .zip file extension we'll remove it
+				if (preg_match('|.+?\.zip$|', $prefs['filename']))
+				{
+					$prefs['filename'] = str_replace('.zip', '', $prefs['filename']);
+				}
+
+				// Tack on the ".sql" file extension if needed
+				if ( ! preg_match('|.+?\.sql$|', $prefs['filename']))
+				{
+					$prefs['filename'] .= '.sql';
+				}
+			}
+
+			// Load the Zip class and output it
+			$CI =& get_instance();
+			$CI->load->library('zip');
+			$CI->zip->add_data($prefs['filename'], $this->_backup($prefs));
+			return $CI->zip->get_zip();
+		}
+		elseif ($prefs['format'] === 'txt') // Was a text file requested?
+		{
+			return $this->_backup($prefs);
+		}
+		elseif ($prefs['format'] === 'gzip') // Was a Gzip file requested?
+		{
+			return gzencode($this->_backup($prefs));
+		}
+
+		return;
+	}
+
+}
diff --git a/system/database/drivers/cubrid/cubrid_driver.php b/system/database/drivers/cubrid/cubrid_driver.php
new file mode 100644
index 00000000..b133c102
--- /dev/null
+++ b/system/database/drivers/cubrid/cubrid_driver.php
@@ -0,0 +1,405 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CUBRID Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		Esen Sagynov
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_cubrid_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'cubrid';
+
+	/**
+	 * Auto-commit flag
+	 *
+	 * @var	bool
+	 */
+	public $auto_commit = TRUE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '`';
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RANDOM()', 'RANDOM(%d)');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:[^:]*:[^:]*:(\?.+)?$/', $this->dsn, $matches))
+		{
+			if (stripos($matches[2], 'autocommit=off') !== FALSE)
+			{
+				$this->auto_commit = FALSE;
+			}
+		}
+		else
+		{
+			// If no port is defined by the user, use the default value
+			empty($this->port) OR $this->port = 33000;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:([^:]*):([^:]*):(\?.+)?$/', $this->dsn, $matches))
+		{
+			$func = ($persistent !== TRUE) ? 'cubrid_connect_with_url' : 'cubrid_pconnect_with_url';
+			return ($matches[2] === '' && $matches[3] === '' && $this->username !== '' && $this->password !== '')
+				? $func($this->dsn, $this->username, $this->password)
+				: $func($this->dsn);
+		}
+
+		$func = ($persistent !== TRUE) ? 'cubrid_connect' : 'cubrid_pconnect';
+		return ($this->username !== '')
+			? $func($this->hostname, $this->port, $this->database, $this->username, $this->password)
+			: $func($this->hostname, $this->port, $this->database);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout
+	 *
+	 * @return	void
+	 */
+	public function reconnect()
+	{
+		if (cubrid_ping($this->conn_id) === FALSE)
+		{
+			$this->conn_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		return ( ! $this->conn_id OR ($version = cubrid_get_server_info($this->conn_id)) === FALSE)
+			? FALSE
+			: $this->data_cache['version'] = $version;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		return cubrid_query($sql, $this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		if (($autocommit = cubrid_get_autocommit($this->conn_id)) === NULL)
+		{
+			return FALSE;
+		}
+		elseif ($autocommit === TRUE)
+		{
+			return cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_FALSE);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if ( ! cubrid_commit($this->conn_id))
+		{
+			return FALSE;
+		}
+
+		if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id))
+		{
+			return cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if ( ! cubrid_rollback($this->conn_id))
+		{
+			return FALSE;
+		}
+
+		if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id))
+		{
+			cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		return cubrid_real_escape_string($str, $this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return cubrid_affected_rows();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	int
+	 */
+	public function insert_id()
+	{
+		return cubrid_insert_id($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SHOW TABLES';
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->Field;
+
+			sscanf($query[$i]->Type, '%[a-z](%d)',
+				$retval[$i]->type,
+				$retval[$i]->max_length
+			);
+
+			$retval[$i]->default		= $query[$i]->Default;
+			$retval[$i]->primary_key	= (int) ($query[$i]->Key === 'PRI');
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => cubrid_errno($this->conn_id), 'message' => cubrid_error($this->conn_id));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FROM tables
+	 *
+	 * Groups tables in FROM clauses if needed, so there is no confusion
+	 * about operator precedence.
+	 *
+	 * @return	string
+	 */
+	protected function _from_tables()
+	{
+		if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
+		{
+			return '('.implode(', ', $this->qb_from).')';
+		}
+
+		return implode(', ', $this->qb_from);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		cubrid_close($this->conn_id);
+	}
+
+}
diff --git a/system/database/drivers/cubrid/cubrid_forge.php b/system/database/drivers/cubrid/cubrid_forge.php
new file mode 100644
index 00000000..8c7cd52d
--- /dev/null
+++ b/system/database/drivers/cubrid/cubrid_forge.php
@@ -0,0 +1,230 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CUBRID Forge Class
+ *
+ * @category	Database
+ * @author		Esen Sagynov
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_cubrid_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= FALSE;
+
+	/**
+	 * CREATE TABLE keys flag
+	 *
+	 * Whether table keys are created from within the
+	 * CREATE TABLE statement.
+	 *
+	 * @var	bool
+	 */
+	protected $_create_table_keys	= TRUE;
+
+	/**
+	 * DROP DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_database	= FALSE;
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= FALSE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'SHORT'		=> 'INTEGER',
+		'SMALLINT'	=> 'INTEGER',
+		'INT'		=> 'BIGINT',
+		'INTEGER'	=> 'BIGINT',
+		'BIGINT'	=> 'NUMERIC',
+		'FLOAT'		=> 'DOUBLE',
+		'REAL'		=> 'DOUBLE'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$sqls[] = $sql.' CHANGE '.$field[$i]['_literal'];
+			}
+			else
+			{
+				$alter_type = empty($field[$i]['new_name']) ? ' MODIFY ' : ' CHANGE ';
+				$sqls[] = $sql.$alter_type.$this->_process_column($field[$i]);
+			}
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		$extra_clause = isset($field['after'])
+			? ' AFTER '.$this->db->escape_identifiers($field['after']) : '';
+
+		if (empty($extra_clause) && isset($field['first']) && $field['first'] === TRUE)
+		{
+			$extra_clause = ' FIRST';
+		}
+
+		return $this->db->escape_identifiers($field['name'])
+			.(empty($field['new_name']) ? '' : ' '.$this->db->escape_identifiers($field['new_name']))
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['null']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['unique']
+			.$extra_clause;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'LONGTEXT':
+				$attributes['TYPE'] = 'STRING';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process indexes
+	 *
+	 * @param	string	$table	(ignored)
+	 * @return	string
+	 */
+	protected function _process_indexes($table)
+	{
+		$sql = '';
+
+		for ($i = 0, $c = count($this->keys); $i < $c; $i++)
+		{
+			if (is_array($this->keys[$i]))
+			{
+				for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
+				{
+					if ( ! isset($this->fields[$this->keys[$i][$i2]]))
+					{
+						unset($this->keys[$i][$i2]);
+						continue;
+					}
+				}
+			}
+			elseif ( ! isset($this->fields[$this->keys[$i]]))
+			{
+				unset($this->keys[$i]);
+				continue;
+			}
+
+			is_array($this->keys[$i]) OR $this->keys[$i] = array($this->keys[$i]);
+
+			$sql .= ",\n\tKEY ".$this->db->escape_identifiers(implode('_', $this->keys[$i]))
+				.' ('.implode(', ', $this->db->escape_identifiers($this->keys[$i])).')';
+		}
+
+		$this->keys = array();
+
+		return $sql;
+	}
+
+}
diff --git a/system/database/drivers/cubrid/cubrid_result.php b/system/database/drivers/cubrid/cubrid_result.php
new file mode 100644
index 00000000..988fba6d
--- /dev/null
+++ b/system/database/drivers/cubrid/cubrid_result.php
@@ -0,0 +1,177 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CUBRID Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		Esen Sagynov
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_cubrid_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		return is_int($this->num_rows)
+			? $this->num_rows
+			: $this->num_rows = cubrid_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return cubrid_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		return cubrid_column_names($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= cubrid_field_name($this->result_id, $i);
+			$retval[$i]->type		= cubrid_field_type($this->result_id, $i);
+			$retval[$i]->max_length		= cubrid_field_len($this->result_id, $i);
+			$retval[$i]->primary_key	= (int) (strpos(cubrid_field_flags($this->result_id, $i), 'primary_key') !== FALSE);
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id) OR
+			(get_resource_type($this->result_id) === 'Unknown' && preg_match('/Resource id #/', strval($this->result_id))))
+		{
+			cubrid_close_request($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * @param	int	$n
+	 * @return	bool
+	 */
+	public function data_seek($n = 0)
+	{
+		return cubrid_data_seek($this->result_id, $n);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return cubrid_fetch_assoc($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return cubrid_fetch_object($this->result_id, $class_name);
+	}
+
+}
diff --git a/system/database/drivers/cubrid/cubrid_utility.php b/system/database/drivers/cubrid/cubrid_utility.php
new file mode 100644
index 00000000..d860bee0
--- /dev/null
+++ b/system/database/drivers/cubrid/cubrid_utility.php
@@ -0,0 +1,79 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CUBRID Utility Class
+ *
+ * @category	Database
+ * @author		Esen Sagynov
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_cubrid_utility extends CI_DB_utility {
+
+	/**
+	 * List databases
+	 *
+	 * @return	array
+	 */
+	public function list_databases()
+	{
+		if (isset($this->db->data_cache['db_names']))
+		{
+			return $this->db->data_cache['db_names'];
+		}
+
+		return $this->db->data_cache['db_names'] = cubrid_list_dbs($this->db->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CUBRID Export
+	 *
+	 * @param	array	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		// No SQL based support in CUBRID as of version 8.4.0. Database or
+		// table backup can be performed using CUBRID Manager
+		// database administration tool.
+		return $this->db->display_error('db_unsupported_feature');
+	}
+}
diff --git a/system/database/drivers/cubrid/index.html b/system/database/drivers/cubrid/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/cubrid/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/ibase/ibase_driver.php b/system/database/drivers/ibase/ibase_driver.php
new file mode 100644
index 00000000..85badc2f
--- /dev/null
+++ b/system/database/drivers/ibase/ibase_driver.php
@@ -0,0 +1,413 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Firebird/Interbase Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_ibase_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'ibase';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RAND()', 'RAND()');
+
+	/**
+	 * IBase Transaction status flag
+	 *
+	 * @var	resource
+	 */
+	protected $_ibase_trans;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		return ($persistent === TRUE)
+			? ibase_pconnect($this->hostname.':'.$this->database, $this->username, $this->password, $this->char_set)
+			: ibase_connect($this->hostname.':'.$this->database, $this->username, $this->password, $this->char_set);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if (($service = ibase_service_attach($this->hostname, $this->username, $this->password)))
+		{
+			$this->data_cache['version'] = ibase_server_info($service, IBASE_SVC_SERVER_VERSION);
+
+			// Don't keep the service open
+			ibase_service_detach($service);
+			return $this->data_cache['version'];
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		return ibase_query(isset($this->_ibase_trans) ? $this->_ibase_trans : $this->conn_id, $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		if (($trans_handle = ibase_trans($this->conn_id)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$this->_ibase_trans = $trans_handle;
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if (ibase_commit($this->_ibase_trans))
+		{
+			$this->_ibase_trans = NULL;
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if (ibase_rollback($this->_ibase_trans))
+		{
+			$this->_ibase_trans = NULL;
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return ibase_affected_rows($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @param	string	$generator_name
+	 * @param	int	$inc_by
+	 * @return	int
+	 */
+	public function insert_id($generator_name, $inc_by = 0)
+	{
+		//If a generator hasn't been used before it will return 0
+		return ibase_gen_id('"'.$generator_name.'"', $inc_by);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT TRIM("RDB$RELATION_NAME") AS TABLE_NAME FROM "RDB$RELATIONS" WHERE "RDB$RELATION_NAME" NOT LIKE \'RDB$%\' AND "RDB$RELATION_NAME" NOT LIKE \'MON$%\'';
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql.' AND TRIM("RDB$RELATION_NAME") AS TABLE_NAME LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT TRIM("RDB$FIELD_NAME") AS COLUMN_NAME FROM "RDB$RELATION_FIELDS" WHERE "RDB$RELATION_NAME" = '.$this->escape($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "rfields"."RDB$FIELD_NAME" AS "name",
+				CASE "fields"."RDB$FIELD_TYPE"
+					WHEN 7 THEN \'SMALLINT\'
+					WHEN 8 THEN \'INTEGER\'
+					WHEN 9 THEN \'QUAD\'
+					WHEN 10 THEN \'FLOAT\'
+					WHEN 11 THEN \'DFLOAT\'
+					WHEN 12 THEN \'DATE\'
+					WHEN 13 THEN \'TIME\'
+					WHEN 14 THEN \'CHAR\'
+					WHEN 16 THEN \'INT64\'
+					WHEN 27 THEN \'DOUBLE\'
+					WHEN 35 THEN \'TIMESTAMP\'
+					WHEN 37 THEN \'VARCHAR\'
+					WHEN 40 THEN \'CSTRING\'
+					WHEN 261 THEN \'BLOB\'
+					ELSE NULL
+				END AS "type",
+				"fields"."RDB$FIELD_LENGTH" AS "max_length",
+				"rfields"."RDB$DEFAULT_VALUE" AS "default"
+			FROM "RDB$RELATION_FIELDS" "rfields"
+				JOIN "RDB$FIELDS" "fields" ON "rfields"."RDB$FIELD_SOURCE" = "fields"."RDB$FIELD_NAME"
+			WHERE "rfields"."RDB$RELATION_NAME" = '.$this->escape($table).'
+			ORDER BY "rfields"."RDB$FIELD_POSITION"';
+
+		return (($query = $this->query($sql)) !== FALSE)
+			? $query->result_object()
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => ibase_errcode(), 'message' => ibase_errmsg());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'DELETE FROM '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		// Limit clause depends on if Interbase or Firebird
+		if (stripos($this->version(), 'firebird') !== FALSE)
+		{
+			$select = 'FIRST '.$this->qb_limit
+				.($this->qb_offset ? ' SKIP '.$this->qb_offset : '');
+		}
+		else
+		{
+			$select = 'ROWS '
+				.($this->qb_offset ? $this->qb_offset.' TO '.($this->qb_limit + $this->qb_offset) : $this->qb_limit);
+		}
+
+		return preg_replace('`SELECT`i', 'SELECT '.$select, $sql, 1);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		ibase_close($this->conn_id);
+	}
+
+}
diff --git a/system/database/drivers/ibase/ibase_forge.php b/system/database/drivers/ibase/ibase_forge.php
new file mode 100644
index 00000000..94008032
--- /dev/null
+++ b/system/database/drivers/ibase/ibase_forge.php
@@ -0,0 +1,251 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Interbase/Firebird Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_ibase_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= FALSE;
+
+	/**
+	 * RENAME TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_rename_table	= FALSE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= FALSE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'SMALLINT'	=> 'INTEGER',
+		'INTEGER'	=> 'INT64',
+		'FLOAT'		=> 'DOUBLE PRECISION'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create database
+	 *
+	 * @param	string	$db_name
+	 * @return	bool
+	 */
+	public function create_database($db_name)
+	{
+		// Firebird databases are flat files, so a path is required
+
+		// Hostname is needed for remote access
+		empty($this->db->hostname) OR $db_name = $this->hostname.':'.$db_name;
+
+		return parent::create_database('"'.$db_name.'"');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @param	string	$db_name	(ignored)
+	 * @return	bool
+	 */
+	public function drop_database($db_name)
+	{
+		if ( ! ibase_drop_db($this->conn_id))
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unable_to_drop') : FALSE;
+		}
+		elseif ( ! empty($this->db->data_cache['db_names']))
+		{
+			$key = array_search(strtolower($this->db->database), array_map('strtolower', $this->db->data_cache['db_names']), TRUE);
+			if ($key !== FALSE)
+			{
+				unset($this->db->data_cache['db_names'][$key]);
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				return FALSE;
+			}
+
+			if (isset($field[$i]['type']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identififers($field[$i]['name'])
+					.' TYPE '.$field[$i]['type'].$field[$i]['length'];
+			}
+
+			if ( ! empty($field[$i]['default']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' SET DEFAULT '.$field[$i]['default'];
+			}
+
+			if (isset($field[$i]['null']))
+			{
+				$sqls[] = 'UPDATE "RDB$RELATION_FIELDS" SET "RDB$NULL_FLAG" = '
+					.($field[$i]['null'] === TRUE ? 'NULL' : '1')
+					.' WHERE "RDB$FIELD_NAME" = '.$this->db->escape($field[$i]['name'])
+					.' AND "RDB$RELATION_NAME" = '.$this->db->escape($table);
+			}
+
+			if ( ! empty($field[$i]['new_name']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
+			}
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type'].$field['length']
+			.$field['null']
+			.$field['unique']
+			.$field['default'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INT':
+				$attributes['TYPE'] = 'INTEGER';
+				return;
+			case 'BIGINT':
+				$attributes['TYPE'] = 'INT64';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		// Not supported
+	}
+
+}
diff --git a/system/database/drivers/ibase/ibase_result.php b/system/database/drivers/ibase/ibase_result.php
new file mode 100644
index 00000000..c3e4ed7a
--- /dev/null
+++ b/system/database/drivers/ibase/ibase_result.php
@@ -0,0 +1,161 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Interbase/Firebird Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_ibase_result extends CI_DB_result {
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return ibase_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		for ($i = 0, $num_fields = $this->num_fields(); $i < $num_fields; $i++)
+		{
+			$info = ibase_field_info($this->result_id, $i);
+			$field_names[] = $info['name'];
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$info = ibase_field_info($this->result_id, $i);
+
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $info['name'];
+			$retval[$i]->type		= $info['type'];
+			$retval[$i]->max_length		= $info['length'];
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		ibase_free_result($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return ibase_fetch_assoc($this->result_id, IBASE_FETCH_BLOBS);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		$row = ibase_fetch_object($this->result_id, IBASE_FETCH_BLOBS);
+
+		if ($class_name === 'stdClass' OR ! $row)
+		{
+			return $row;
+		}
+
+		$class_name = new $class_name();
+		foreach ($row as $key => $value)
+		{
+			$class_name->$key = $value;
+		}
+
+		return $class_name;
+	}
+
+}
diff --git a/system/database/drivers/ibase/ibase_utility.php b/system/database/drivers/ibase/ibase_utility.php
new file mode 100644
index 00000000..1fc34254
--- /dev/null
+++ b/system/database/drivers/ibase/ibase_utility.php
@@ -0,0 +1,69 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Interbase/Firebird Utility Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_ibase_utility extends CI_DB_utility {
+
+	/**
+	 * Export
+	 *
+	 * @param	string	$filename
+	 * @return	mixed
+	 */
+	protected function _backup($filename)
+	{
+		if ($service = ibase_service_attach($this->db->hostname, $this->db->username, $this->db->password))
+		{
+			$res = ibase_backup($service, $this->db->database, $filename.'.fbk');
+
+			// Close the service connection
+			ibase_service_detach($service);
+			return $res;
+		}
+
+		return FALSE;
+	}
+
+}
diff --git a/system/database/drivers/ibase/index.html b/system/database/drivers/ibase/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/ibase/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/index.html b/system/database/drivers/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/mssql/index.html b/system/database/drivers/mssql/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/mssql/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/mssql/mssql_driver.php b/system/database/drivers/mssql/mssql_driver.php
new file mode 100644
index 00000000..a20b0123
--- /dev/null
+++ b/system/database/drivers/mssql/mssql_driver.php
@@ -0,0 +1,506 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MS SQL Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mssql_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'mssql';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('NEWID()', 'RAND(%d)');
+
+	/**
+	 * Quoted identifier flag
+	 *
+	 * Whether to use SQL-92 standard quoted identifier
+	 * (double quotes) or brackets for identifier escaping.
+	 *
+	 * @var	bool
+	 */
+	protected $_quoted_identifier = TRUE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Appends the port number to the hostname, if needed.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if ( ! empty($this->port))
+		{
+			$this->hostname .= (DIRECTORY_SEPARATOR === '\\' ? ',' : ':').$this->port;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		ini_set('mssql.charset', $this->char_set);
+		$this->conn_id = ($persistent)
+				? mssql_pconnect($this->hostname, $this->username, $this->password)
+				: mssql_connect($this->hostname, $this->username, $this->password);
+
+		if ( ! $this->conn_id)
+		{
+			return FALSE;
+		}
+
+		// ----------------------------------------------------------------
+
+		// Select the DB... assuming a database name is specified in the config file
+		if ($this->database !== '' && ! $this->db_select())
+		{
+			log_message('error', 'Unable to select database: '.$this->database);
+
+			return ($this->db_debug === TRUE)
+				? $this->display_error('db_unable_to_select', $this->database)
+				: FALSE;
+		}
+
+		// Determine how identifiers are escaped
+		$query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
+		$query = $query->row_array();
+		$this->_quoted_identifier = empty($query) ? FALSE : (bool) $query['qi'];
+		$this->_escape_char = ($this->_quoted_identifier) ? '"' : array('[', ']');
+
+		return $this->conn_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @param	string	$database
+	 * @return	bool
+	 */
+	public function db_select($database = '')
+	{
+		if ($database === '')
+		{
+			$database = $this->database;
+		}
+
+		// Note: Escaping is required in the event that the DB name
+		// contains reserved characters.
+		if (mssql_select_db('['.$database.']', $this->conn_id))
+		{
+			$this->database = $database;
+			$this->data_cache = array();
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	mixed	resource if rows are returned, bool otherwise
+	 */
+	protected function _execute($sql)
+	{
+		return mssql_query($sql, $this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		return $this->simple_query('BEGIN TRAN');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		return $this->simple_query('COMMIT TRAN');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		return $this->simple_query('ROLLBACK TRAN');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return mssql_rows_affected($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * Returns the last id created in the Identity column.
+	 *
+	 * @return	string
+	 */
+	public function insert_id()
+	{
+		$query = version_compare($this->version(), '8', '>=')
+			? 'SELECT SCOPE_IDENTITY() AS last_id'
+			: 'SELECT @@IDENTITY AS last_id';
+
+		$query = $this->query($query);
+		$query = $query->row();
+		return $query->last_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Version number query string
+	 *
+	 * @return	string
+	 */
+	protected function _version()
+	{
+		return "SELECT SERVERPROPERTY('ProductVersion') AS ver";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT '.$this->escape_identifiers('name')
+			.' FROM '.$this->escape_identifiers('sysobjects')
+			.' WHERE '.$this->escape_identifiers('type')." = 'U'";
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			$sql .= ' AND '.$this->escape_identifiers('name')." LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql.' ORDER BY '.$this->escape_identifiers('name');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT COLUMN_NAME
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, COLUMN_DEFAULT
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->COLUMN_NAME;
+			$retval[$i]->type		= $query[$i]->DATA_TYPE;
+			$retval[$i]->max_length		= ($query[$i]->CHARACTER_MAXIMUM_LENGTH > 0) ? $query[$i]->CHARACTER_MAXIMUM_LENGTH : $query[$i]->NUMERIC_PRECISION;
+			$retval[$i]->default		= $query[$i]->COLUMN_DEFAULT;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		// We need this because the error info is discarded by the
+		// server the first time you request it, and query() already
+		// calls error() once for logging purposes when a query fails.
+		static $error = array('code' => 0, 'message' => NULL);
+
+		$message = mssql_get_last_message();
+		if ( ! empty($message))
+		{
+			$error['code']    = $this->query('SELECT @@ERROR AS code')->row()->code;
+			$error['message'] = $message;
+		}
+
+		return $error;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE TABLE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		if ($this->qb_limit)
+		{
+			return 'WITH ci_delete AS (SELECT TOP '.$this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
+		}
+
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		$limit = $this->qb_offset + $this->qb_limit;
+
+		// As of SQL Server 2005 (9.0.*) ROW_NUMBER() is supported,
+		// however an ORDER BY clause is required for it to work
+		if (version_compare($this->version(), '9', '>=') && $this->qb_offset && ! empty($this->qb_orderby))
+		{
+			$orderby = $this->_compile_order_by();
+
+			// We have to strip the ORDER BY clause
+			$sql = trim(substr($sql, 0, strrpos($sql, $orderby)));
+
+			// Get the fields to select from our subquery, so that we can avoid CI_rownum appearing in the actual results
+			if (count($this->qb_select) === 0 OR strpos(implode(',', $this->qb_select), '*') !== FALSE)
+			{
+				$select = '*'; // Inevitable
+			}
+			else
+			{
+				// Use only field names and their aliases, everything else is out of our scope.
+				$select = array();
+				$field_regexp = ($this->_quoted_identifier)
+					? '("[^\"]+")' : '(\[[^\]]+\])';
+				for ($i = 0, $c = count($this->qb_select); $i < $c; $i++)
+				{
+					$select[] = preg_match('/(?:\s|\.)'.$field_regexp.'$/i', $this->qb_select[$i], $m)
+						? $m[1] : $this->qb_select[$i];
+				}
+				$select = implode(', ', $select);
+			}
+
+			return 'SELECT '.$select." FROM (\n\n"
+				.preg_replace('/^(SELECT( DISTINCT)?)/i', '\\1 ROW_NUMBER() OVER('.trim($orderby).') AS '.$this->escape_identifiers('CI_rownum').', ', $sql)
+				."\n\n) ".$this->escape_identifiers('CI_subquery')
+				."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.($this->qb_offset + 1).' AND '.$limit;
+		}
+
+		return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		// Multiple-value inserts are only supported as of SQL Server 2008
+		if (version_compare($this->version(), '10', '>='))
+		{
+			return parent::_insert_batch($table, $keys, $values);
+		}
+
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		mssql_close($this->conn_id);
+	}
+
+}
diff --git a/system/database/drivers/mssql/mssql_forge.php b/system/database/drivers/mssql/mssql_forge.php
new file mode 100644
index 00000000..f7941603
--- /dev/null
+++ b/system/database/drivers/mssql/mssql_forge.php
@@ -0,0 +1,151 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MS SQL Forge Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mssql_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= "IF NOT EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nCREATE TABLE";
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= "IF EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nDROP TABLE";
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT'	=> 'SMALLINT',
+		'SMALLINT'	=> 'INT',
+		'INT'		=> 'BIGINT',
+		'REAL'		=> 'FLOAT'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('ADD', 'DROP'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table).' ALTER COLUMN ';
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			$sqls[] = $sql.$this->_process_column($field[$i]);
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		if (isset($attributes['CONSTRAINT']) && strpos($attributes['TYPE'], 'INT') !== FALSE)
+		{
+			unset($attributes['CONSTRAINT']);
+		}
+
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INTEGER':
+				$attributes['TYPE'] = 'INT';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['auto_increment'] = ' IDENTITY(1,1)';
+		}
+	}
+
+}
diff --git a/system/database/drivers/mssql/mssql_result.php b/system/database/drivers/mssql/mssql_result.php
new file mode 100644
index 00000000..6cae3050
--- /dev/null
+++ b/system/database/drivers/mssql/mssql_result.php
@@ -0,0 +1,198 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MSSQL Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mssql_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		return is_int($this->num_rows)
+			? $this->num_rows
+			: $this->num_rows = mssql_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return mssql_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		mssql_field_seek($this->result_id, 0);
+		while ($field = mssql_fetch_field($this->result_id))
+		{
+			$field_names[] = $field->name;
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$field = mssql_fetch_field($this->result_id, $i);
+
+			$retval[$i]		= new stdClass();
+			$retval[$i]->name	= $field->name;
+			$retval[$i]->type	= $field->type;
+			$retval[$i]->max_length	= $field->max_length;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id))
+		{
+			mssql_free_result($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * @param	int	$n
+	 * @return	bool
+	 */
+	public function data_seek($n = 0)
+	{
+		return mssql_data_seek($this->result_id, $n);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return mssql_fetch_assoc($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		$row = mssql_fetch_object($this->result_id);
+
+		if ($class_name === 'stdClass' OR ! $row)
+		{
+			return $row;
+		}
+
+		$class_name = new $class_name();
+		foreach ($row as $key => $value)
+		{
+			$class_name->$key = $value;
+		}
+
+		return $class_name;
+	}
+
+}
diff --git a/system/database/drivers/mssql/mssql_utility.php b/system/database/drivers/mssql/mssql_utility.php
new file mode 100644
index 00000000..1aad485b
--- /dev/null
+++ b/system/database/drivers/mssql/mssql_utility.php
@@ -0,0 +1,77 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MS SQL Utility Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mssql_utility extends CI_DB_utility {
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases	= 'EXEC sp_helpdb'; // Can also be: EXEC sp_databases
+
+	/**
+	 * OPTIMIZE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_optimize_table	= 'ALTER INDEX all ON %s REORGANIZE';
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	bool
+	 */
+	protected function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+
+}
diff --git a/system/database/drivers/mysql/index.html b/system/database/drivers/mysql/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/mysql/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/mysql/mysql_driver.php b/system/database/drivers/mysql/mysql_driver.php
new file mode 100644
index 00000000..61337cdd
--- /dev/null
+++ b/system/database/drivers/mysql/mysql_driver.php
@@ -0,0 +1,493 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQL Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysql_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'mysql';
+
+	/**
+	 * Compression flag
+	 *
+	 * @var	bool
+	 */
+	public $compress = FALSE;
+
+	/**
+	 * DELETE hack flag
+	 *
+	 * Whether to use the MySQL "delete hack" which allows the number
+	 * of affected rows to be shown. Uses a preg_replace when enabled,
+	 * adding a bit more processing to all queries.
+	 *
+	 * @var	bool
+	 */
+	public $delete_hack = TRUE;
+
+	/**
+	 * Strict ON flag
+	 *
+	 * Whether we're running in strict SQL mode.
+	 *
+	 * @var	bool
+	 */
+	public $stricton;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '`';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if ( ! empty($this->port))
+		{
+			$this->hostname .= ':'.$this->port;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		$client_flags = ($this->compress === FALSE) ? 0 : MYSQL_CLIENT_COMPRESS;
+
+		if ($this->encrypt === TRUE)
+		{
+			$client_flags = $client_flags | MYSQL_CLIENT_SSL;
+		}
+
+		// Error suppression is necessary mostly due to PHP 5.5+ issuing E_DEPRECATED messages
+		$this->conn_id = ($persistent === TRUE)
+			? mysql_pconnect($this->hostname, $this->username, $this->password, $client_flags)
+			: mysql_connect($this->hostname, $this->username, $this->password, TRUE, $client_flags);
+
+		// ----------------------------------------------------------------
+
+		// Select the DB... assuming a database name is specified in the config file
+		if ($this->database !== '' && ! $this->db_select())
+		{
+			log_message('error', 'Unable to select database: '.$this->database);
+
+			return ($this->db_debug === TRUE)
+				? $this->display_error('db_unable_to_select', $this->database)
+				: FALSE;
+		}
+
+		if (is_resource($this->conn_id))
+		{
+			if ( ! mysql_set_charset($this->char_set, $this->conn_id))
+			{
+				log_message('error', "Database: Unable to set the configured connection charset ('{$this->char_set}').");
+				$this->close();
+				return ($this->db->debug) ? $this->display_error('db_unable_to_set_charset', $this->char_set) : FALSE;
+			}
+
+			if (isset($this->stricton))
+			{
+				if ($this->stricton)
+				{
+					$this->simple_query('SET SESSION sql_mode = CONCAT(@@sql_mode, ",", "STRICT_ALL_TABLES")');
+				}
+				else
+				{
+					$this->simple_query(
+						'SET SESSION sql_mode =
+						REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(
+						@@sql_mode,
+						"STRICT_ALL_TABLES,", ""),
+						",STRICT_ALL_TABLES", ""),
+						"STRICT_ALL_TABLES", ""),
+						"STRICT_TRANS_TABLES,", ""),
+						",STRICT_TRANS_TABLES", ""),
+						"STRICT_TRANS_TABLES", "")'
+					);
+				}
+			}
+
+			return $this->conn_id;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout
+	 *
+	 * @return	void
+	 */
+	public function reconnect()
+	{
+		if (mysql_ping($this->conn_id) === FALSE)
+		{
+			$this->conn_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @param	string	$database
+	 * @return	bool
+	 */
+	public function db_select($database = '')
+	{
+		if ($database === '')
+		{
+			$database = $this->database;
+		}
+
+		if (mysql_select_db($database, $this->conn_id))
+		{
+			$this->database = $database;
+			$this->data_cache = array();
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if ( ! $this->conn_id OR ($version = mysql_get_server_info($this->conn_id)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		return $this->data_cache['version'] = $version;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	mixed
+	 */
+	protected function _execute($sql)
+	{
+		return mysql_query($this->_prep_query($sql), $this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep the query
+	 *
+	 * If needed, each database adapter can prep the query string
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	string
+	 */
+	protected function _prep_query($sql)
+	{
+		// mysql_affected_rows() returns 0 for "DELETE FROM TABLE" queries. This hack
+		// modifies the query so that it a proper number of affected rows is returned.
+		if ($this->delete_hack === TRUE && preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $sql))
+		{
+			return trim($sql).' WHERE 1=1';
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		$this->simple_query('SET AUTOCOMMIT=0');
+		return $this->simple_query('START TRANSACTION'); // can also be BEGIN or BEGIN WORK
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if ($this->simple_query('COMMIT'))
+		{
+			$this->simple_query('SET AUTOCOMMIT=1');
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if ($this->simple_query('ROLLBACK'))
+		{
+			$this->simple_query('SET AUTOCOMMIT=1');
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		return mysql_real_escape_string($str, $this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return mysql_affected_rows($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	int
+	 */
+	public function insert_id()
+	{
+		return mysql_insert_id($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SHOW TABLES FROM '.$this->_escape_char.$this->database.$this->_escape_char;
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->Field;
+
+			sscanf($query[$i]->Type, '%[a-z](%d)',
+				$retval[$i]->type,
+				$retval[$i]->max_length
+			);
+
+			$retval[$i]->default		= $query[$i]->Default;
+			$retval[$i]->primary_key	= (int) ($query[$i]->Key === 'PRI');
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => mysql_errno($this->conn_id), 'message' => mysql_error($this->conn_id));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FROM tables
+	 *
+	 * Groups tables in FROM clauses if needed, so there is no confusion
+	 * about operator precedence.
+	 *
+	 * @return	string
+	 */
+	protected function _from_tables()
+	{
+		if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
+		{
+			return '('.implode(', ', $this->qb_from).')';
+		}
+
+		return implode(', ', $this->qb_from);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		// Error suppression to avoid annoying E_WARNINGs in cases
+		// where the connection has already been closed for some reason.
+		@mysql_close($this->conn_id);
+	}
+
+}
diff --git a/system/database/drivers/mysql/mysql_forge.php b/system/database/drivers/mysql/mysql_forge.php
new file mode 100644
index 00000000..e59366be
--- /dev/null
+++ b/system/database/drivers/mysql/mysql_forge.php
@@ -0,0 +1,243 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQL Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysql_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= 'CREATE DATABASE %s CHARACTER SET %s COLLATE %s';
+
+	/**
+	 * CREATE TABLE keys flag
+	 *
+	 * Whether table keys are created from within the
+	 * CREATE TABLE statement.
+	 *
+	 * @var	bool
+	 */
+	protected $_create_table_keys	= TRUE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT',
+		'SMALLINT',
+		'MEDIUMINT',
+		'INT',
+		'INTEGER',
+		'BIGINT',
+		'REAL',
+		'DOUBLE',
+		'DOUBLE PRECISION',
+		'FLOAT',
+		'DECIMAL',
+		'NUMERIC'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null = 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CREATE TABLE attributes
+	 *
+	 * @param	array	$attributes	Associative array of table attributes
+	 * @return	string
+	 */
+	protected function _create_table_attr($attributes)
+	{
+		$sql = '';
+
+		foreach (array_keys($attributes) as $key)
+		{
+			if (is_string($key))
+			{
+				$sql .= ' '.strtoupper($key).' = '.$attributes[$key];
+			}
+		}
+
+		if ( ! empty($this->db->char_set) && ! strpos($sql, 'CHARACTER SET') && ! strpos($sql, 'CHARSET'))
+		{
+			$sql .= ' DEFAULT CHARACTER SET = '.$this->db->char_set;
+		}
+
+		if ( ! empty($this->db->dbcollat) && ! strpos($sql, 'COLLATE'))
+		{
+			$sql .= ' COLLATE = '.$this->db->dbcollat;
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP')
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$field[$i] = ($alter_type === 'ADD')
+						? "\n\tADD ".$field[$i]['_literal']
+						: "\n\tMODIFY ".$field[$i]['_literal'];
+			}
+			else
+			{
+				if ($alter_type === 'ADD')
+				{
+					$field[$i]['_literal'] = "\n\tADD ";
+				}
+				else
+				{
+					$field[$i]['_literal'] = empty($field[$i]['new_name']) ? "\n\tMODIFY " : "\n\tCHANGE ";
+				}
+
+				$field[$i] = $field[$i]['_literal'].$this->_process_column($field[$i]);
+			}
+		}
+
+		return array($sql.implode(',', $field));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		$extra_clause = isset($field['after'])
+			? ' AFTER '.$this->db->escape_identifiers($field['after']) : '';
+
+		if (empty($extra_clause) && isset($field['first']) && $field['first'] === TRUE)
+		{
+			$extra_clause = ' FIRST';
+		}
+
+
+		return $this->db->escape_identifiers($field['name'])
+			.(empty($field['new_name']) ? '' : ' '.$this->db->escape_identifiers($field['new_name']))
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['null']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['unique']
+			.(empty($field['comment']) ? '' : ' COMMENT '.$field['comment'])
+			.$extra_clause;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process indexes
+	 *
+	 * @param	string	$table	(ignored)
+	 * @return	string
+	 */
+	protected function _process_indexes($table)
+	{
+		$sql = '';
+
+		for ($i = 0, $c = count($this->keys); $i < $c; $i++)
+		{
+			if (is_array($this->keys[$i]))
+			{
+				for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
+				{
+					if ( ! isset($this->fields[$this->keys[$i][$i2]]))
+					{
+						unset($this->keys[$i][$i2]);
+						continue;
+					}
+				}
+			}
+			elseif ( ! isset($this->fields[$this->keys[$i]]))
+			{
+				unset($this->keys[$i]);
+				continue;
+			}
+
+			is_array($this->keys[$i]) OR $this->keys[$i] = array($this->keys[$i]);
+
+			$sql .= ",\n\tKEY ".$this->db->escape_identifiers(implode('_', $this->keys[$i]))
+				.' ('.implode(', ', $this->db->escape_identifiers($this->keys[$i])).')';
+		}
+
+		$this->keys = array();
+
+		return $sql;
+	}
+
+}
diff --git a/system/database/drivers/mysql/mysql_result.php b/system/database/drivers/mysql/mysql_result.php
new file mode 100644
index 00000000..461f643d
--- /dev/null
+++ b/system/database/drivers/mysql/mysql_result.php
@@ -0,0 +1,199 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQL Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysql_result extends CI_DB_result {
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$driver_object
+	 * @return	void
+	 */
+	public function __construct(&$driver_object)
+	{
+		parent::__construct($driver_object);
+
+		// Required, due to mysql_data_seek() causing nightmares
+		// with empty result sets
+		$this->num_rows = mysql_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		return $this->num_rows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return mysql_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		mysql_field_seek($this->result_id, 0);
+		while ($field = mysql_fetch_field($this->result_id))
+		{
+			$field_names[] = $field->name;
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= mysql_field_name($this->result_id, $i);
+			$retval[$i]->type		= mysql_field_type($this->result_id, $i);
+			$retval[$i]->max_length		= mysql_field_len($this->result_id, $i);
+			$retval[$i]->primary_key	= (int) (strpos(mysql_field_flags($this->result_id, $i), 'primary_key') !== FALSE);
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id))
+		{
+			mysql_free_result($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * @param	int	$n
+	 * @return	bool
+	 */
+	public function data_seek($n = 0)
+	{
+		return $this->num_rows
+			? mysql_data_seek($this->result_id, $n)
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return mysql_fetch_assoc($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return mysql_fetch_object($this->result_id, $class_name);
+	}
+
+}
diff --git a/system/database/drivers/mysql/mysql_utility.php b/system/database/drivers/mysql/mysql_utility.php
new file mode 100644
index 00000000..6089da53
--- /dev/null
+++ b/system/database/drivers/mysql/mysql_utility.php
@@ -0,0 +1,211 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQL Utility Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysql_utility extends CI_DB_utility {
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases	= 'SHOW DATABASES';
+
+	/**
+	 * OPTIMIZE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_optimize_table	= 'OPTIMIZE TABLE %s';
+
+	/**
+	 * REPAIR TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_repair_table	= 'REPAIR TABLE %s';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		if (count($params) === 0)
+		{
+			return FALSE;
+		}
+
+		// Extract the prefs for simplicity
+		extract($params);
+
+		// Build the output
+		$output = '';
+
+		// Do we need to include a statement to disable foreign key checks?
+		if ($foreign_key_checks === FALSE)
+		{
+			$output .= 'SET foreign_key_checks = 0;'.$newline;
+		}
+
+		foreach ( (array) $tables as $table)
+		{
+			// Is the table in the "ignore" list?
+			if (in_array($table, (array) $ignore, TRUE))
+			{
+				continue;
+			}
+
+			// Get the table schema
+			$query = $this->db->query('SHOW CREATE TABLE '.$this->db->escape_identifiers($this->db->database.'.'.$table));
+
+			// No result means the table name was invalid
+			if ($query === FALSE)
+			{
+				continue;
+			}
+
+			// Write out the table schema
+			$output .= '#'.$newline.'# TABLE STRUCTURE FOR: '.$table.$newline.'#'.$newline.$newline;
+
+			if ($add_drop === TRUE)
+			{
+				$output .= 'DROP TABLE IF EXISTS '.$this->db->protect_identifiers($table).';'.$newline.$newline;
+			}
+
+			$i = 0;
+			$result = $query->result_array();
+			foreach ($result[0] as $val)
+			{
+				if ($i++ % 2)
+				{
+					$output .= $val.';'.$newline.$newline;
+				}
+			}
+
+			// If inserts are not needed we're done...
+			if ($add_insert === FALSE)
+			{
+				continue;
+			}
+
+			// Grab all the data from the current table
+			$query = $this->db->query('SELECT * FROM '.$this->db->protect_identifiers($table));
+
+			if ($query->num_rows() === 0)
+			{
+				continue;
+			}
+
+			// Fetch the field names and determine if the field is an
+			// integer type. We use this info to decide whether to
+			// surround the data with quotes or not
+
+			$i = 0;
+			$field_str = '';
+			$is_int = array();
+			while ($field = mysql_fetch_field($query->result_id))
+			{
+				// Most versions of MySQL store timestamp as a string
+				$is_int[$i] = in_array(strtolower(mysql_field_type($query->result_id, $i)),
+							array('tinyint', 'smallint', 'mediumint', 'int', 'bigint'), //, 'timestamp'),
+							TRUE);
+
+				// Create a string of field names
+				$field_str .= $this->db->escape_identifiers($field->name).', ';
+				$i++;
+			}
+
+			// Trim off the end comma
+			$field_str = preg_replace('/, $/' , '', $field_str);
+
+			// Build the insert string
+			foreach ($query->result_array() as $row)
+			{
+				$val_str = '';
+
+				$i = 0;
+				foreach ($row as $v)
+				{
+					// Is the value NULL?
+					if ($v === NULL)
+					{
+						$val_str .= 'NULL';
+					}
+					else
+					{
+						// Escape the data if it's not an integer
+						$val_str .= ($is_int[$i] === FALSE) ? $this->db->escape($v) : $v;
+					}
+
+					// Append a comma
+					$val_str .= ', ';
+					$i++;
+				}
+
+				// Remove the comma at the end of the string
+				$val_str = preg_replace('/, $/' , '', $val_str);
+
+				// Build the INSERT string
+				$output .= 'INSERT INTO '.$this->db->protect_identifiers($table).' ('.$field_str.') VALUES ('.$val_str.');'.$newline;
+			}
+
+			$output .= $newline.$newline;
+		}
+
+		// Do we need to include a statement to re-enable foreign key checks?
+		if ($foreign_key_checks === FALSE)
+		{
+			$output .= 'SET foreign_key_checks = 1;'.$newline;
+		}
+
+		return $output;
+	}
+
+}
diff --git a/system/database/drivers/mysqli/index.html b/system/database/drivers/mysqli/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/mysqli/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/mysqli/mysqli_driver.php b/system/database/drivers/mysqli/mysqli_driver.php
new file mode 100644
index 00000000..428b7e7f
--- /dev/null
+++ b/system/database/drivers/mysqli/mysqli_driver.php
@@ -0,0 +1,540 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQLi Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysqli_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'mysqli';
+
+	/**
+	 * Compression flag
+	 *
+	 * @var	bool
+	 */
+	public $compress = FALSE;
+
+	/**
+	 * DELETE hack flag
+	 *
+	 * Whether to use the MySQL "delete hack" which allows the number
+	 * of affected rows to be shown. Uses a preg_replace when enabled,
+	 * adding a bit more processing to all queries.
+	 *
+	 * @var	bool
+	 */
+	public $delete_hack = TRUE;
+
+	/**
+	 * Strict ON flag
+	 *
+	 * Whether we're running in strict SQL mode.
+	 *
+	 * @var	bool
+	 */
+	public $stricton;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '`';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * MySQLi object
+	 *
+	 * Has to be preserved without being assigned to $conn_id.
+	 *
+	 * @var	MySQLi
+	 */
+	protected $_mysqli;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	object
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		// Do we have a socket path?
+		if ($this->hostname[0] === '/')
+		{
+			$hostname = NULL;
+			$port = NULL;
+			$socket = $this->hostname;
+		}
+		else
+		{
+			$hostname = ($persistent === TRUE)
+				? 'p:'.$this->hostname : $this->hostname;
+			$port = empty($this->port) ? NULL : $this->port;
+			$socket = NULL;
+		}
+
+		$client_flags = ($this->compress === TRUE) ? MYSQLI_CLIENT_COMPRESS : 0;
+		$this->_mysqli = mysqli_init();
+
+		$this->_mysqli->options(MYSQLI_OPT_CONNECT_TIMEOUT, 10);
+
+		if (isset($this->stricton))
+		{
+			if ($this->stricton)
+			{
+				$this->_mysqli->options(MYSQLI_INIT_COMMAND, 'SET SESSION sql_mode = CONCAT(@@sql_mode, ",", "STRICT_ALL_TABLES")');
+			}
+			else
+			{
+				$this->_mysqli->options(MYSQLI_INIT_COMMAND,
+					'SET SESSION sql_mode =
+					REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(
+					@@sql_mode,
+					"STRICT_ALL_TABLES,", ""),
+					",STRICT_ALL_TABLES", ""),
+					"STRICT_ALL_TABLES", ""),
+					"STRICT_TRANS_TABLES,", ""),
+					",STRICT_TRANS_TABLES", ""),
+					"STRICT_TRANS_TABLES", "")'
+				);
+			}
+		}
+
+		if (is_array($this->encrypt))
+		{
+			$ssl = array();
+			empty($this->encrypt['ssl_key'])    OR $ssl['key']    = $this->encrypt['ssl_key'];
+			empty($this->encrypt['ssl_cert'])   OR $ssl['cert']   = $this->encrypt['ssl_cert'];
+			empty($this->encrypt['ssl_ca'])     OR $ssl['ca']     = $this->encrypt['ssl_ca'];
+			empty($this->encrypt['ssl_capath']) OR $ssl['capath'] = $this->encrypt['ssl_capath'];
+			empty($this->encrypt['ssl_cipher']) OR $ssl['cipher'] = $this->encrypt['ssl_cipher'];
+
+			if (isset($this->encrypt['ssl_verify']))
+			{
+				$client_flags |= MYSQLI_CLIENT_SSL;
+
+				if ($this->encrypt['ssl_verify'])
+				{
+					defined('MYSQLI_OPT_SSL_VERIFY_SERVER_CERT') && $this->_mysqli->options(MYSQLI_OPT_SSL_VERIFY_SERVER_CERT, TRUE);
+				}
+				// Apparently (when it exists), setting MYSQLI_OPT_SSL_VERIFY_SERVER_CERT
+				// to FALSE didn't do anything, so PHP 5.6.16 introduced yet another
+				// constant ...
+				//
+				// https://secure.php.net/ChangeLog-5.php#5.6.16
+				// https://bugs.php.net/bug.php?id=68344
+				elseif (defined('MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT'))
+				{
+					$client_flags |= MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT;
+				}
+			}
+
+			if ( ! empty($ssl))
+			{
+				$client_flags |= MYSQLI_CLIENT_SSL;
+				$this->_mysqli->ssl_set(
+					isset($ssl['key'])    ? $ssl['key']    : NULL,
+					isset($ssl['cert'])   ? $ssl['cert']   : NULL,
+					isset($ssl['ca'])     ? $ssl['ca']     : NULL,
+					isset($ssl['capath']) ? $ssl['capath'] : NULL,
+					isset($ssl['cipher']) ? $ssl['cipher'] : NULL
+				);
+			}
+		}
+
+		if ($this->_mysqli->real_connect($hostname, $this->username, $this->password, $this->database, $port, $socket, $client_flags))
+		{
+			// Prior to version 5.7.3, MySQL silently downgrades to an unencrypted connection if SSL setup fails
+			if (
+				($client_flags & MYSQLI_CLIENT_SSL)
+				&& version_compare($this->_mysqli->client_info, '5.7.3', '<=')
+				&& empty($this->_mysqli->query("SHOW STATUS LIKE 'ssl_cipher'")->fetch_object()->Value)
+			)
+			{
+				$this->_mysqli->close();
+				$message = 'MySQLi was configured for an SSL connection, but got an unencrypted connection instead!';
+				log_message('error', $message);
+				return ($this->db_debug) ? $this->display_error($message, '', TRUE) : FALSE;
+			}
+
+			if ( ! $this->_mysqli->set_charset($this->char_set))
+			{
+				log_message('error', "Database: Unable to set the configured connection charset ('{$this->char_set}').");
+				$this->_mysqli->close();
+				return ($this->db->db_debug) ? $this->display_error('db_unable_to_set_charset', $this->char_set) : FALSE;
+			}
+
+			return $this->_mysqli;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout
+	 *
+	 * @return	void
+	 */
+	public function reconnect()
+	{
+		if ($this->conn_id !== FALSE && $this->conn_id->ping() === FALSE)
+		{
+			$this->conn_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @param	string	$database
+	 * @return	bool
+	 */
+	public function db_select($database = '')
+	{
+		if ($database === '')
+		{
+			$database = $this->database;
+		}
+
+		if ($this->conn_id->select_db($database))
+		{
+			$this->database = $database;
+			$this->data_cache = array();
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		return $this->data_cache['version'] = $this->conn_id->server_info;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	mixed
+	 */
+	protected function _execute($sql)
+	{
+		return $this->conn_id->query($this->_prep_query($sql));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep the query
+	 *
+	 * If needed, each database adapter can prep the query string
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	string
+	 */
+	protected function _prep_query($sql)
+	{
+		// mysqli_affected_rows() returns 0 for "DELETE FROM TABLE" queries. This hack
+		// modifies the query so that it a proper number of affected rows is returned.
+		if ($this->delete_hack === TRUE && preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $sql))
+		{
+			return trim($sql).' WHERE 1=1';
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		$this->conn_id->autocommit(FALSE);
+		return is_php('5.5')
+			? $this->conn_id->begin_transaction()
+			: $this->simple_query('START TRANSACTION'); // can also be BEGIN or BEGIN WORK
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if ($this->conn_id->commit())
+		{
+			$this->conn_id->autocommit(TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if ($this->conn_id->rollback())
+		{
+			$this->conn_id->autocommit(TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		return $this->conn_id->real_escape_string($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return $this->conn_id->affected_rows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	int
+	 */
+	public function insert_id()
+	{
+		return $this->conn_id->insert_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SHOW TABLES FROM '.$this->_escape_char.$this->database.$this->_escape_char;
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->Field;
+
+			sscanf($query[$i]->Type, '%[a-z](%d)',
+				$retval[$i]->type,
+				$retval[$i]->max_length
+			);
+
+			$retval[$i]->default		= $query[$i]->Default;
+			$retval[$i]->primary_key	= (int) ($query[$i]->Key === 'PRI');
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		if ( ! empty($this->_mysqli->connect_errno))
+		{
+			return array(
+				'code'    => $this->_mysqli->connect_errno,
+				'message' => $this->_mysqli->connect_error
+			);
+		}
+
+		return array('code' => $this->conn_id->errno, 'message' => $this->conn_id->error);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FROM tables
+	 *
+	 * Groups tables in FROM clauses if needed, so there is no confusion
+	 * about operator precedence.
+	 *
+	 * @return	string
+	 */
+	protected function _from_tables()
+	{
+		if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
+		{
+			return '('.implode(', ', $this->qb_from).')';
+		}
+
+		return implode(', ', $this->qb_from);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		$this->conn_id->close();
+	}
+
+}
diff --git a/system/database/drivers/mysqli/mysqli_forge.php b/system/database/drivers/mysqli/mysqli_forge.php
new file mode 100644
index 00000000..b67fe56c
--- /dev/null
+++ b/system/database/drivers/mysqli/mysqli_forge.php
@@ -0,0 +1,244 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQLi Forge Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysqli_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= 'CREATE DATABASE %s CHARACTER SET %s COLLATE %s';
+
+	/**
+	 * CREATE TABLE keys flag
+	 *
+	 * Whether table keys are created from within the
+	 * CREATE TABLE statement.
+	 *
+	 * @var	bool
+	 */
+	protected $_create_table_keys	= TRUE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT',
+		'SMALLINT',
+		'MEDIUMINT',
+		'INT',
+		'INTEGER',
+		'BIGINT',
+		'REAL',
+		'DOUBLE',
+		'DOUBLE PRECISION',
+		'FLOAT',
+		'DECIMAL',
+		'NUMERIC'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null = 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CREATE TABLE attributes
+	 *
+	 * @param	array	$attributes	Associative array of table attributes
+	 * @return	string
+	 */
+	protected function _create_table_attr($attributes)
+	{
+		$sql = '';
+
+		foreach (array_keys($attributes) as $key)
+		{
+			if (is_string($key))
+			{
+				$sql .= ' '.strtoupper($key).' = '.$attributes[$key];
+			}
+		}
+
+		if ( ! empty($this->db->char_set) && ! strpos($sql, 'CHARACTER SET') && ! strpos($sql, 'CHARSET'))
+		{
+			$sql .= ' DEFAULT CHARACTER SET = '.$this->db->char_set;
+		}
+
+		if ( ! empty($this->db->dbcollat) && ! strpos($sql, 'COLLATE'))
+		{
+			$sql .= ' COLLATE = '.$this->db->dbcollat;
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP')
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$field[$i] = ($alter_type === 'ADD')
+						? "\n\tADD ".$field[$i]['_literal']
+						: "\n\tMODIFY ".$field[$i]['_literal'];
+			}
+			else
+			{
+				if ($alter_type === 'ADD')
+				{
+					$field[$i]['_literal'] = "\n\tADD ";
+				}
+				else
+				{
+					$field[$i]['_literal'] = empty($field[$i]['new_name']) ? "\n\tMODIFY " : "\n\tCHANGE ";
+				}
+
+				$field[$i] = $field[$i]['_literal'].$this->_process_column($field[$i]);
+			}
+		}
+
+		return array($sql.implode(',', $field));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		$extra_clause = isset($field['after'])
+			? ' AFTER '.$this->db->escape_identifiers($field['after']) : '';
+
+		if (empty($extra_clause) && isset($field['first']) && $field['first'] === TRUE)
+		{
+			$extra_clause = ' FIRST';
+		}
+
+		return $this->db->escape_identifiers($field['name'])
+			.(empty($field['new_name']) ? '' : ' '.$this->db->escape_identifiers($field['new_name']))
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['null']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['unique']
+			.(empty($field['comment']) ? '' : ' COMMENT '.$field['comment'])
+			.$extra_clause;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process indexes
+	 *
+	 * @param	string	$table	(ignored)
+	 * @return	string
+	 */
+	protected function _process_indexes($table)
+	{
+		$sql = '';
+
+		for ($i = 0, $c = count($this->keys); $i < $c; $i++)
+		{
+			if (is_array($this->keys[$i]))
+			{
+				for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
+				{
+					if ( ! isset($this->fields[$this->keys[$i][$i2]]))
+					{
+						unset($this->keys[$i][$i2]);
+						continue;
+					}
+				}
+			}
+			elseif ( ! isset($this->fields[$this->keys[$i]]))
+			{
+				unset($this->keys[$i]);
+				continue;
+			}
+
+			is_array($this->keys[$i]) OR $this->keys[$i] = array($this->keys[$i]);
+
+			$sql .= ",\n\tKEY ".$this->db->escape_identifiers(implode('_', $this->keys[$i]))
+				.' ('.implode(', ', $this->db->escape_identifiers($this->keys[$i])).')';
+		}
+
+		$this->keys = array();
+
+		return $sql;
+	}
+
+}
diff --git a/system/database/drivers/mysqli/mysqli_result.php b/system/database/drivers/mysqli/mysqli_result.php
new file mode 100644
index 00000000..7e4e45f3
--- /dev/null
+++ b/system/database/drivers/mysqli/mysqli_result.php
@@ -0,0 +1,232 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQLi Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysqli_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		return is_int($this->num_rows)
+			? $this->num_rows
+			: $this->num_rows = $this->result_id->num_rows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return $this->result_id->field_count;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		$this->result_id->field_seek(0);
+		while ($field = $this->result_id->fetch_field())
+		{
+			$field_names[] = $field->name;
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		$field_data = $this->result_id->fetch_fields();
+		for ($i = 0, $c = count($field_data); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $field_data[$i]->name;
+			$retval[$i]->type		= static::_get_field_type($field_data[$i]->type);
+			$retval[$i]->max_length		= $field_data[$i]->max_length;
+			$retval[$i]->primary_key	= (int) ($field_data[$i]->flags & MYSQLI_PRI_KEY_FLAG);
+			$retval[$i]->default		= $field_data[$i]->def;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get field type
+	 *
+	 * Extracts field type info from the bitflags returned by
+	 * mysqli_result::fetch_fields()
+	 *
+	 * @used-by	CI_DB_mysqli_result::field_data()
+	 * @param	int	$type
+	 * @return	string
+	 */
+	private static function _get_field_type($type)
+	{
+		static $map;
+		isset($map) OR $map = array(
+			MYSQLI_TYPE_DECIMAL     => 'decimal',
+			MYSQLI_TYPE_BIT         => 'bit',
+			MYSQLI_TYPE_TINY        => 'tinyint',
+			MYSQLI_TYPE_SHORT       => 'smallint',
+			MYSQLI_TYPE_INT24       => 'mediumint',
+			MYSQLI_TYPE_LONG        => 'int',
+			MYSQLI_TYPE_LONGLONG    => 'bigint',
+			MYSQLI_TYPE_FLOAT       => 'float',
+			MYSQLI_TYPE_DOUBLE      => 'double',
+			MYSQLI_TYPE_TIMESTAMP   => 'timestamp',
+			MYSQLI_TYPE_DATE        => 'date',
+			MYSQLI_TYPE_TIME        => 'time',
+			MYSQLI_TYPE_DATETIME    => 'datetime',
+			MYSQLI_TYPE_YEAR        => 'year',
+			MYSQLI_TYPE_NEWDATE     => 'date',
+			MYSQLI_TYPE_INTERVAL    => 'interval',
+			MYSQLI_TYPE_ENUM        => 'enum',
+			MYSQLI_TYPE_SET         => 'set',
+			MYSQLI_TYPE_TINY_BLOB   => 'tinyblob',
+			MYSQLI_TYPE_MEDIUM_BLOB => 'mediumblob',
+			MYSQLI_TYPE_BLOB        => 'blob',
+			MYSQLI_TYPE_LONG_BLOB   => 'longblob',
+			MYSQLI_TYPE_STRING      => 'char',
+			MYSQLI_TYPE_VAR_STRING  => 'varchar',
+			MYSQLI_TYPE_GEOMETRY    => 'geometry'
+		);
+
+		return isset($map[$type]) ? $map[$type] : $type;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_object($this->result_id))
+		{
+			$this->result_id->free();
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * @param	int	$n
+	 * @return	bool
+	 */
+	public function data_seek($n = 0)
+	{
+		return $this->result_id->data_seek($n);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return $this->result_id->fetch_assoc();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return $this->result_id->fetch_object($class_name);
+	}
+
+}
diff --git a/system/database/drivers/mysqli/mysqli_utility.php b/system/database/drivers/mysqli/mysqli_utility.php
new file mode 100644
index 00000000..75e35d11
--- /dev/null
+++ b/system/database/drivers/mysqli/mysqli_utility.php
@@ -0,0 +1,211 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * MySQLi Utility Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_mysqli_utility extends CI_DB_utility {
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases	= 'SHOW DATABASES';
+
+	/**
+	 * OPTIMIZE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_optimize_table	= 'OPTIMIZE TABLE %s';
+
+	/**
+	 * REPAIR TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_repair_table	= 'REPAIR TABLE %s';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		if (count($params) === 0)
+		{
+			return FALSE;
+		}
+
+		// Extract the prefs for simplicity
+		extract($params);
+
+		// Build the output
+		$output = '';
+
+		// Do we need to include a statement to disable foreign key checks?
+		if ($foreign_key_checks === FALSE)
+		{
+			$output .= 'SET foreign_key_checks = 0;'.$newline;
+		}
+
+		foreach ( (array) $tables as $table)
+		{
+			// Is the table in the "ignore" list?
+			if (in_array($table, (array) $ignore, TRUE))
+			{
+				continue;
+			}
+
+			// Get the table schema
+			$query = $this->db->query('SHOW CREATE TABLE '.$this->db->escape_identifiers($this->db->database.'.'.$table));
+
+			// No result means the table name was invalid
+			if ($query === FALSE)
+			{
+				continue;
+			}
+
+			// Write out the table schema
+			$output .= '#'.$newline.'# TABLE STRUCTURE FOR: '.$table.$newline.'#'.$newline.$newline;
+
+			if ($add_drop === TRUE)
+			{
+				$output .= 'DROP TABLE IF EXISTS '.$this->db->protect_identifiers($table).';'.$newline.$newline;
+			}
+
+			$i = 0;
+			$result = $query->result_array();
+			foreach ($result[0] as $val)
+			{
+				if ($i++ % 2)
+				{
+					$output .= $val.';'.$newline.$newline;
+				}
+			}
+
+			// If inserts are not needed we're done...
+			if ($add_insert === FALSE)
+			{
+				continue;
+			}
+
+			// Grab all the data from the current table
+			$query = $this->db->query('SELECT * FROM '.$this->db->protect_identifiers($table));
+
+			if ($query->num_rows() === 0)
+			{
+				continue;
+			}
+
+			// Fetch the field names and determine if the field is an
+			// integer type. We use this info to decide whether to
+			// surround the data with quotes or not
+
+			$i = 0;
+			$field_str = '';
+			$is_int = array();
+			while ($field = $query->result_id->fetch_field())
+			{
+				// Most versions of MySQL store timestamp as a string
+				$is_int[$i] = in_array($field->type, array(MYSQLI_TYPE_TINY, MYSQLI_TYPE_SHORT, MYSQLI_TYPE_INT24, MYSQLI_TYPE_LONG), TRUE);
+
+				// Create a string of field names
+				$field_str .= $this->db->escape_identifiers($field->name).', ';
+				$i++;
+			}
+
+			// Trim off the end comma
+			$field_str = preg_replace('/, $/' , '', $field_str);
+
+			// Build the insert string
+			foreach ($query->result_array() as $row)
+			{
+				$val_str = '';
+
+				$i = 0;
+				foreach ($row as $v)
+				{
+					// Is the value NULL?
+					if ($v === NULL)
+					{
+						$val_str .= 'NULL';
+					}
+					else
+					{
+						// Escape the data if it's not an integer
+						$val_str .= ($is_int[$i] === FALSE) ? $this->db->escape($v) : $v;
+					}
+
+					// Append a comma
+					$val_str .= ', ';
+					$i++;
+				}
+
+				// Remove the comma at the end of the string
+				$val_str = preg_replace('/, $/' , '', $val_str);
+
+				// Build the INSERT string
+				$output .= 'INSERT INTO '.$this->db->protect_identifiers($table).' ('.$field_str.') VALUES ('.$val_str.');'.$newline;
+			}
+
+			$output .= $newline.$newline;
+		}
+
+		// Do we need to include a statement to re-enable foreign key checks?
+		if ($foreign_key_checks === FALSE)
+		{
+			$output .= 'SET foreign_key_checks = 1;'.$newline;
+		}
+
+		return $output;
+	}
+
+}
diff --git a/system/database/drivers/oci8/index.html b/system/database/drivers/oci8/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/oci8/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php
new file mode 100644
index 00000000..a9d75ebf
--- /dev/null
+++ b/system/database/drivers/oci8/oci8_driver.php
@@ -0,0 +1,701 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.4.1
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * oci8 Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage  Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+
+/**
+ * oci8 Database Adapter Class
+ *
+ * This is a modification of the DB_driver class to
+ * permit access to oracle databases
+ *
+ * @author	  Kelly McArdle
+ */
+class CI_DB_oci8_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'oci8';
+
+	/**
+	 * Statement ID
+	 *
+	 * @var	resource
+	 */
+	public $stmt_id;
+
+	/**
+	 * Cursor ID
+	 *
+	 * @var	resource
+	 */
+	public $curs_id;
+
+	/**
+	 * Commit mode flag
+	 *
+	 * @var	int
+	 */
+	public $commit_mode = OCI_COMMIT_ON_SUCCESS;
+
+	/**
+	 * Limit used flag
+	 *
+	 * If we use LIMIT, we'll add a field that will
+	 * throw off num_fields later.
+	 *
+	 * @var	bool
+	 */
+	public $limit_used = FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reset $stmt_id flag
+	 *
+	 * Used by stored_procedure() to prevent _execute() from
+	 * re-setting the statement ID.
+	 */
+	protected $_reset_stmt_id = TRUE;
+
+	/**
+	 * List of reserved identifiers
+	 *
+	 * Identifiers that must NOT be escaped.
+	 *
+	 * @var	string[]
+	 */
+	protected $_reserved_identifiers = array('*', 'rownum');
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('ASC', 'ASC'); // not currently supported
+
+	/**
+	 * COUNT string
+	 *
+	 * @used-by	CI_DB_driver::count_all()
+	 * @used-by	CI_DB_query_builder::count_all_results()
+	 *
+	 * @var	string
+	 */
+	protected $_count_string = 'SELECT COUNT(1) AS ';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		$valid_dsns = array(
+			'tns'	=> '/^\(DESCRIPTION=(\(.+\)){2,}\)$/', // TNS
+			// Easy Connect string (Oracle 10g+)
+			'ec'	=> '/^(\/\/)?[a-z0-9.:_-]+(:[1-9][0-9]{0,4})?(\/[a-z0-9$_]+)?(:[^\/])?(\/[a-z0-9$_]+)?$/i',
+			'in'	=> '/^[a-z0-9$_]+$/i' // Instance name (defined in tnsnames.ora)
+		);
+
+		/* Space characters don't have any effect when actually
+		 * connecting, but can be a hassle while validating the DSN.
+		 */
+		$this->dsn = str_replace(array("\n", "\r", "\t", ' '), '', $this->dsn);
+
+		if ($this->dsn !== '')
+		{
+			foreach ($valid_dsns as $regexp)
+			{
+				if (preg_match($regexp, $this->dsn))
+				{
+					return;
+				}
+			}
+		}
+
+		// Legacy support for TNS in the hostname configuration field
+		$this->hostname = str_replace(array("\n", "\r", "\t", ' '), '', $this->hostname);
+		if (preg_match($valid_dsns['tns'], $this->hostname))
+		{
+			$this->dsn = $this->hostname;
+			return;
+		}
+		elseif ($this->hostname !== '' && strpos($this->hostname, '/') === FALSE && strpos($this->hostname, ':') === FALSE
+			&& (( ! empty($this->port) && ctype_digit($this->port)) OR $this->database !== ''))
+		{
+			/* If the hostname field isn't empty, doesn't contain
+			 * ':' and/or '/' and if port and/or database aren't
+			 * empty, then the hostname field is most likely indeed
+			 * just a hostname. Therefore we'll try and build an
+			 * Easy Connect string from these 3 settings, assuming
+			 * that the database field is a service name.
+			 */
+			$this->dsn = $this->hostname
+				.(( ! empty($this->port) && ctype_digit($this->port)) ? ':'.$this->port : '')
+				.($this->database !== '' ? '/'.ltrim($this->database, '/') : '');
+
+			if (preg_match($valid_dsns['ec'], $this->dsn))
+			{
+				return;
+			}
+		}
+
+		/* At this point, we can only try and validate the hostname and
+		 * database fields separately as DSNs.
+		 */
+		if (preg_match($valid_dsns['ec'], $this->hostname) OR preg_match($valid_dsns['in'], $this->hostname))
+		{
+			$this->dsn = $this->hostname;
+			return;
+		}
+
+		$this->database = str_replace(array("\n", "\r", "\t", ' '), '', $this->database);
+		foreach ($valid_dsns as $regexp)
+		{
+			if (preg_match($regexp, $this->database))
+			{
+				return;
+			}
+		}
+
+		/* Well - OK, an empty string should work as well.
+		 * PHP will try to use environment variables to
+		 * determine which Oracle instance to connect to.
+		 */
+		$this->dsn = '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		$func = ($persistent === TRUE) ? 'oci_pconnect' : 'oci_connect';
+		return empty($this->char_set)
+			? $func($this->username, $this->password, $this->dsn)
+			: $func($this->username, $this->password, $this->dsn, $this->char_set);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if ( ! $this->conn_id OR ($version_string = oci_server_version($this->conn_id)) === FALSE)
+		{
+			return FALSE;
+		}
+		elseif (preg_match('#Release\s(\d+(?:\.\d+)+)#', $version_string, $match))
+		{
+			return $this->data_cache['version'] = $match[1];
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		/* Oracle must parse the query before it is run. All of the actions with
+		 * the query are based on the statement id returned by oci_parse().
+		 */
+		if ($this->_reset_stmt_id === TRUE)
+		{
+			$this->stmt_id = oci_parse($this->conn_id, $sql);
+		}
+
+		oci_set_prefetch($this->stmt_id, 1000);
+		return oci_execute($this->stmt_id, $this->commit_mode);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get cursor. Returns a cursor from the database
+	 *
+	 * @return	resource
+	 */
+	public function get_cursor()
+	{
+		return $this->curs_id = oci_new_cursor($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Stored Procedure.  Executes a stored procedure
+	 *
+	 * @param	string	package name in which the stored procedure is in
+	 * @param	string	stored procedure name to execute
+	 * @param	array	parameters
+	 * @return	mixed
+	 *
+	 * params array keys
+	 *
+	 * KEY      OPTIONAL  NOTES
+	 * name     no        the name of the parameter should be in :<param_name> format
+	 * value    no        the value of the parameter.  If this is an OUT or IN OUT parameter,
+	 *                    this should be a reference to a variable
+	 * type     yes       the type of the parameter
+	 * length   yes       the max size of the parameter
+	 */
+	public function stored_procedure($package, $procedure, array $params)
+	{
+		if ($package === '' OR $procedure === '')
+		{
+			log_message('error', 'Invalid query: '.$package.'.'.$procedure);
+			return ($this->db_debug) ? $this->display_error('db_invalid_query') : FALSE;
+		}
+
+		// Build the query string
+		$sql = 'BEGIN '.$package.'.'.$procedure.'(';
+
+		$have_cursor = FALSE;
+		foreach ($params as $param)
+		{
+			$sql .= $param['name'].',';
+
+			if (isset($param['type']) && $param['type'] === OCI_B_CURSOR)
+			{
+				$have_cursor = TRUE;
+			}
+		}
+		$sql = trim($sql, ',').'); END;';
+
+		$this->_reset_stmt_id = FALSE;
+		$this->stmt_id = oci_parse($this->conn_id, $sql);
+		$this->_bind_params($params);
+		$result = $this->query($sql, FALSE, $have_cursor);
+		$this->_reset_stmt_id = TRUE;
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Bind parameters
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	protected function _bind_params($params)
+	{
+		if ( ! is_array($params) OR ! is_resource($this->stmt_id))
+		{
+			return;
+		}
+
+		foreach ($params as $param)
+		{
+			foreach (array('name', 'value', 'type', 'length') as $val)
+			{
+				if ( ! isset($param[$val]))
+				{
+					$param[$val] = '';
+				}
+			}
+
+			oci_bind_by_name($this->stmt_id, $param['name'], $param['value'], $param['length'], $param['type']);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		$this->commit_mode = OCI_NO_AUTO_COMMIT;
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		$this->commit_mode = OCI_COMMIT_ON_SUCCESS;
+
+		return oci_commit($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		$this->commit_mode = OCI_COMMIT_ON_SUCCESS;
+		return oci_rollback($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return oci_num_rows($this->stmt_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	int
+	 */
+	public function insert_id()
+	{
+		// not supported in oracle
+		return $this->display_error('db_unsupported_function');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "TABLE_NAME" FROM "ALL_TABLES"';
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql.' WHERE "TABLE_NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		if (strpos($table, '.') !== FALSE)
+		{
+			sscanf($table, '%[^.].%s', $owner, $table);
+		}
+		else
+		{
+			$owner = $this->username;
+		}
+
+		return 'SELECT COLUMN_NAME FROM ALL_TAB_COLUMNS
+			WHERE UPPER(OWNER) = '.$this->escape(strtoupper($owner)).'
+				AND UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (strpos($table, '.') !== FALSE)
+		{
+			sscanf($table, '%[^.].%s', $owner, $table);
+		}
+		else
+		{
+			$owner = $this->username;
+		}
+
+		$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHAR_LENGTH, DATA_PRECISION, DATA_LENGTH, DATA_DEFAULT, NULLABLE
+			FROM ALL_TAB_COLUMNS
+			WHERE UPPER(OWNER) = '.$this->escape(strtoupper($owner)).'
+				AND UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->COLUMN_NAME;
+			$retval[$i]->type		= $query[$i]->DATA_TYPE;
+
+			$length = ($query[$i]->CHAR_LENGTH > 0)
+				? $query[$i]->CHAR_LENGTH : $query[$i]->DATA_PRECISION;
+			if ($length === NULL)
+			{
+				$length = $query[$i]->DATA_LENGTH;
+			}
+			$retval[$i]->max_length		= $length;
+
+			$default = $query[$i]->DATA_DEFAULT;
+			if ($default === NULL && $query[$i]->NULLABLE === 'N')
+			{
+				$default = '';
+			}
+			$retval[$i]->default = $default;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		// oci_error() returns an array that already contains
+		// 'code' and 'message' keys, but it can return false
+		// if there was no error ....
+		if (is_resource($this->curs_id))
+		{
+			$error = oci_error($this->curs_id);
+		}
+		elseif (is_resource($this->stmt_id))
+		{
+			$error = oci_error($this->stmt_id);
+		}
+		elseif (is_resource($this->conn_id))
+		{
+			$error = oci_error($this->conn_id);
+		}
+		else
+		{
+			$error = oci_error();
+		}
+
+		return is_array($error)
+			? $error
+			: array('code' => '', 'message' => '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param 	array	$values	INSERT values
+	 * @return	string
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		$keys = implode(', ', $keys);
+		$sql = "INSERT ALL\n";
+
+		for ($i = 0, $c = count($values); $i < $c; $i++)
+		{
+			$sql .= '	INTO '.$table.' ('.$keys.') VALUES '.$values[$i]."\n";
+		}
+
+		return $sql.'SELECT * FROM dual';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE TABLE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		if ($this->qb_limit)
+		{
+			$this->where('rownum <= ',$this->qb_limit, FALSE);
+			$this->qb_limit = FALSE;
+		}
+
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		if (version_compare($this->version(), '12.1', '>='))
+		{
+			// OFFSET-FETCH can be used only with the ORDER BY clause
+			empty($this->qb_orderby) && $sql .= ' ORDER BY 1';
+
+			return $sql.' OFFSET '.(int) $this->qb_offset.' ROWS FETCH NEXT '.$this->qb_limit.' ROWS ONLY';
+		}
+
+		$this->limit_used = TRUE;
+		return 'SELECT * FROM (SELECT inner_query.*, rownum rnum FROM ('.$sql.') inner_query WHERE rownum < '.($this->qb_offset + $this->qb_limit + 1).')'
+			.($this->qb_offset ? ' WHERE rnum >= '.($this->qb_offset + 1) : '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		oci_close($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * We need to reset our $limit_used hack flag, so it doesn't propagate
+	 * to subsequent queries.
+	 *
+	 * @return	void
+	 */
+	protected function _reset_select()
+	{
+		$this->limit_used = FALSE;
+		parent::_reset_select();
+	}
+}
diff --git a/system/database/drivers/oci8/oci8_forge.php b/system/database/drivers/oci8/oci8_forge.php
new file mode 100644
index 00000000..7dc7b2ad
--- /dev/null
+++ b/system/database/drivers/oci8/oci8_forge.php
@@ -0,0 +1,216 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.4.1
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Oracle Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_oci8_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= FALSE;
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= FALSE;
+
+	/**
+	 * DROP DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_database	= FALSE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= FALSE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= FALSE;
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP')
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+		elseif ($alter_type === 'CHANGE')
+		{
+			$alter_type = 'MODIFY';
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$field[$i] = "\n\t".$field[$i]['_literal'];
+			}
+			else
+			{
+				$field[$i]['_literal'] = "\n\t".$this->_process_column($field[$i]);
+
+				if ( ! empty($field[$i]['comment']))
+				{
+					$sqls[] = 'COMMENT ON COLUMN '
+						.$this->db->escape_identifiers($table).'.'.$this->db->escape_identifiers($field[$i]['name'])
+						.' IS '.$field[$i]['comment'];
+				}
+
+				if ($alter_type === 'MODIFY' && ! empty($field[$i]['new_name']))
+				{
+					$sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+						.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
+				}
+
+				$field[$i] = "\n\t".$field[$i]['_literal'];
+			}
+		}
+
+		$sql .= ' '.$alter_type.' ';
+		$sql .= (count($field) === 1)
+				? $field[0]
+				: '('.implode(',', $field).')';
+
+		// RENAME COLUMN must be executed after MODIFY
+		array_unshift($sqls, $sql);
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'number') !== FALSE && version_compare($this->db->version(), '12.1', '>='))
+		{
+			$field['auto_increment'] = ' GENERATED ALWAYS AS IDENTITY';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['null']
+			.$field['unique'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			case 'INT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			case 'BIGINT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			default: return;
+		}
+	}
+}
diff --git a/system/database/drivers/oci8/oci8_result.php b/system/database/drivers/oci8/oci8_result.php
new file mode 100644
index 00000000..7fd911e8
--- /dev/null
+++ b/system/database/drivers/oci8/oci8_result.php
@@ -0,0 +1,229 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.4.1
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * oci8 Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_oci8_result extends CI_DB_result {
+
+	/**
+	 * Statement ID
+	 *
+	 * @var	resource
+	 */
+	public $stmt_id;
+
+	/**
+	 * Cursor ID
+	 *
+	 * @var	resource
+	 */
+	public $curs_id;
+
+	/**
+	 * Limit used flag
+	 *
+	 * @var	bool
+	 */
+	public $limit_used;
+
+	/**
+	 * Commit mode flag
+	 *
+	 * @var	int
+	 */
+	public $commit_mode;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$driver_object
+	 * @return	void
+	 */
+	public function __construct(&$driver_object)
+	{
+		parent::__construct($driver_object);
+
+		$this->stmt_id = $driver_object->stmt_id;
+		$this->curs_id = $driver_object->curs_id;
+		$this->limit_used = $driver_object->limit_used;
+		$this->commit_mode =& $driver_object->commit_mode;
+		$driver_object->stmt_id = FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		$count = oci_num_fields($this->stmt_id);
+
+		// if we used a limit we subtract it
+		return ($this->limit_used) ? $count - 1 : $count;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		for ($c = 1, $fieldCount = $this->num_fields(); $c <= $fieldCount; $c++)
+		{
+			$field_names[] = oci_field_name($this->stmt_id, $c);
+		}
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		for ($c = 1, $fieldCount = $this->num_fields(); $c <= $fieldCount; $c++)
+		{
+			$F		= new stdClass();
+			$F->name	= oci_field_name($this->stmt_id, $c);
+			$F->type	= oci_field_type($this->stmt_id, $c);
+			$F->max_length	= oci_field_size($this->stmt_id, $c);
+
+			$retval[] = $F;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id))
+		{
+			oci_free_statement($this->result_id);
+			$this->result_id = FALSE;
+		}
+
+		if (is_resource($this->stmt_id))
+		{
+			oci_free_statement($this->stmt_id);
+		}
+
+		if (is_resource($this->curs_id))
+		{
+			oci_cancel($this->curs_id);
+			$this->curs_id = NULL;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		$id = ($this->curs_id) ? $this->curs_id : $this->stmt_id;
+		return oci_fetch_assoc($id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		$row = ($this->curs_id)
+			? oci_fetch_object($this->curs_id)
+			: oci_fetch_object($this->stmt_id);
+
+		if ($class_name === 'stdClass' OR ! $row)
+		{
+			return $row;
+		}
+
+		$class_name = new $class_name();
+		foreach ($row as $key => $value)
+		{
+			$class_name->$key = $value;
+		}
+
+		return $class_name;
+	}
+
+}
diff --git a/system/database/drivers/oci8/oci8_utility.php b/system/database/drivers/oci8/oci8_utility.php
new file mode 100644
index 00000000..a0a9c2c9
--- /dev/null
+++ b/system/database/drivers/oci8/oci8_utility.php
@@ -0,0 +1,68 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.4.1
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Oracle Utility Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_oci8_utility extends CI_DB_utility {
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases	= 'SELECT username FROM dba_users'; // Schemas are actual usernames
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+
+}
diff --git a/system/database/drivers/odbc/index.html b/system/database/drivers/odbc/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/odbc/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/odbc/odbc_driver.php b/system/database/drivers/odbc/odbc_driver.php
new file mode 100644
index 00000000..f02da4d1
--- /dev/null
+++ b/system/database/drivers/odbc/odbc_driver.php
@@ -0,0 +1,425 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * ODBC Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_odbc_driver extends CI_DB_driver {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'odbc';
+
+	/**
+	 * Database schema
+	 *
+	 * @var	string
+	 */
+	public $schema = 'public';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Identifier escape character
+	 *
+	 * Must be empty for ODBC.
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '';
+
+	/**
+	 * ESCAPE statement string
+	 *
+	 * @var	string
+	 */
+	protected $_like_escape_str = " {escape '%s'} ";
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RND()', 'RND(%d)');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ODBC result ID resource returned from odbc_prepare()
+	 *
+	 * @var	resource
+	 */
+	private $odbc_result;
+
+	/**
+	 * Values to use with odbc_execute() for prepared statements
+	 *
+	 * @var	array
+	 */
+	private $binds = array();
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		// Legacy support for DSN in the hostname field
+		if (empty($this->dsn))
+		{
+			$this->dsn = $this->hostname;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		return ($persistent === TRUE)
+			? odbc_pconnect($this->dsn, $this->username, $this->password)
+			: odbc_connect($this->dsn, $this->username, $this->password);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile Bindings
+	 *
+	 * @param	string	$sql	SQL statement
+	 * @param	array	$binds	An array of values to bind
+	 * @return	string
+	 */
+	public function compile_binds($sql, $binds)
+	{
+		if (empty($binds) OR empty($this->bind_marker) OR strpos($sql, $this->bind_marker) === FALSE)
+		{
+			return $sql;
+		}
+		elseif ( ! is_array($binds))
+		{
+			$binds = array($binds);
+			$bind_count = 1;
+		}
+		else
+		{
+			// Make sure we're using numeric keys
+			$binds = array_values($binds);
+			$bind_count = count($binds);
+		}
+
+		// We'll need the marker length later
+		$ml = strlen($this->bind_marker);
+
+		// Make sure not to replace a chunk inside a string that happens to match the bind marker
+		if ($c = preg_match_all("/'[^']*'|\"[^\"]*\"/i", $sql, $matches))
+		{
+			$c = preg_match_all('/'.preg_quote($this->bind_marker, '/').'/i',
+				str_replace($matches[0],
+					str_replace($this->bind_marker, str_repeat(' ', $ml), $matches[0]),
+					$sql, $c),
+				$matches, PREG_OFFSET_CAPTURE);
+
+			// Bind values' count must match the count of markers in the query
+			if ($bind_count !== $c)
+			{
+				return $sql;
+			}
+		}
+		elseif (($c = preg_match_all('/'.preg_quote($this->bind_marker, '/').'/i', $sql, $matches, PREG_OFFSET_CAPTURE)) !== $bind_count)
+		{
+			return $sql;
+		}
+
+		if ($this->bind_marker !== '?')
+		{
+			do
+			{
+				$c--;
+				$sql = substr_replace($sql, '?', $matches[0][$c][1], $ml);
+			}
+			while ($c !== 0);
+		}
+
+		if (FALSE !== ($this->odbc_result = odbc_prepare($this->conn_id, $sql)))
+		{
+			$this->binds = array_values($binds);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		if ( ! isset($this->odbc_result))
+		{
+			return odbc_exec($this->conn_id, $sql);
+		}
+		elseif ($this->odbc_result === FALSE)
+		{
+			return FALSE;
+		}
+
+		if (TRUE === ($success = odbc_execute($this->odbc_result, $this->binds)))
+		{
+			// For queries that return result sets, return the result_id resource on success
+			$this->is_write_type($sql) OR $success = $this->odbc_result;
+		}
+
+		$this->odbc_result = NULL;
+		$this->binds       = array();
+
+		return $success;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		return odbc_autocommit($this->conn_id, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if (odbc_commit($this->conn_id))
+		{
+			odbc_autocommit($this->conn_id, TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if (odbc_rollback($this->conn_id))
+		{
+			odbc_autocommit($this->conn_id, TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determines if a query is a "write" type.
+	 *
+	 * @param	string	An SQL query string
+	 * @return	bool
+	 */
+	public function is_write_type($sql)
+	{
+		if (preg_match('#^(INSERT|UPDATE).*RETURNING\s.+(\,\s?.+)*$#is', $sql))
+		{
+			return FALSE;
+		}
+
+		return parent::is_write_type($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		$this->display_error('db_unsupported_feature');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return odbc_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	bool
+	 */
+	public function insert_id()
+	{
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = '".$this->schema."'";
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql." AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SHOW COLUMNS FROM '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data query
+	 *
+	 * Generates a platform-specific query so that the column data can be retrieved
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _field_data($table)
+	{
+		return 'SELECT TOP 1 FROM '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => odbc_error($this->conn_id), 'message' => odbc_errormsg($this->conn_id));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		odbc_close($this->conn_id);
+	}
+}
diff --git a/system/database/drivers/odbc/odbc_forge.php b/system/database/drivers/odbc/odbc_forge.php
new file mode 100644
index 00000000..05f9c76d
--- /dev/null
+++ b/system/database/drivers/odbc/odbc_forge.php
@@ -0,0 +1,86 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * ODBC Forge Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/database/
+ */
+class CI_DB_odbc_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= FALSE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= FALSE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		// Not supported (in most databases at least)
+	}
+
+}
diff --git a/system/database/drivers/odbc/odbc_result.php b/system/database/drivers/odbc/odbc_result.php
new file mode 100644
index 00000000..6aff7694
--- /dev/null
+++ b/system/database/drivers/odbc/odbc_result.php
@@ -0,0 +1,268 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * ODBC Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_odbc_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		if (is_int($this->num_rows))
+		{
+			return $this->num_rows;
+		}
+		elseif (($this->num_rows = odbc_num_rows($this->result_id)) !== -1)
+		{
+			return $this->num_rows;
+		}
+
+		// Work-around for ODBC subdrivers that don't support num_rows()
+		if (count($this->result_array) > 0)
+		{
+			return $this->num_rows = count($this->result_array);
+		}
+		elseif (count($this->result_object) > 0)
+		{
+			return $this->num_rows = count($this->result_object);
+		}
+
+		return $this->num_rows = count($this->result_array());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return odbc_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		$num_fields = $this->num_fields();
+
+		if ($num_fields > 0)
+		{
+			for ($i = 1; $i <= $num_fields; $i++)
+			{
+				$field_names[] = odbc_field_name($this->result_id, $i);
+			}
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		for ($i = 0, $odbc_index = 1, $c = $this->num_fields(); $i < $c; $i++, $odbc_index++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= odbc_field_name($this->result_id, $odbc_index);
+			$retval[$i]->type		= odbc_field_type($this->result_id, $odbc_index);
+			$retval[$i]->max_length		= odbc_field_len($this->result_id, $odbc_index);
+			$retval[$i]->primary_key	= 0;
+			$retval[$i]->default		= '';
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id))
+		{
+			odbc_free_result($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return odbc_fetch_array($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		$row = odbc_fetch_object($this->result_id);
+
+		if ($class_name === 'stdClass' OR ! $row)
+		{
+			return $row;
+		}
+
+		$class_name = new $class_name();
+		foreach ($row as $key => $value)
+		{
+			$class_name->$key = $value;
+		}
+
+		return $class_name;
+	}
+
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('odbc_fetch_array'))
+{
+	/**
+	 * ODBC Fetch array
+	 *
+	 * Emulates the native odbc_fetch_array() function when
+	 * it is not available (odbc_fetch_array() requires unixODBC)
+	 *
+	 * @param	resource	&$result
+	 * @param	int		$rownumber
+	 * @return	array
+	 */
+	function odbc_fetch_array(&$result, $rownumber = 1)
+	{
+		$rs = array();
+		if ( ! odbc_fetch_into($result, $rs, $rownumber))
+		{
+			return FALSE;
+		}
+
+		$rs_assoc = array();
+		foreach ($rs as $k => $v)
+		{
+			$field_name = odbc_field_name($result, $k+1);
+			$rs_assoc[$field_name] = $v;
+		}
+
+		return $rs_assoc;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('odbc_fetch_object'))
+{
+	/**
+	 * ODBC Fetch object
+	 *
+	 * Emulates the native odbc_fetch_object() function when
+	 * it is not available.
+	 *
+	 * @param	resource	&$result
+	 * @param	int		$rownumber
+	 * @return	object
+	 */
+	function odbc_fetch_object(&$result, $rownumber = 1)
+	{
+		$rs = array();
+		if ( ! odbc_fetch_into($result, $rs, $rownumber))
+		{
+			return FALSE;
+		}
+
+		$rs_object = new stdClass();
+		foreach ($rs as $k => $v)
+		{
+			$field_name = odbc_field_name($result, $k+1);
+			$rs_object->$field_name = $v;
+		}
+
+		return $rs_object;
+	}
+}
diff --git a/system/database/drivers/odbc/odbc_utility.php b/system/database/drivers/odbc/odbc_utility.php
new file mode 100644
index 00000000..78720108
--- /dev/null
+++ b/system/database/drivers/odbc/odbc_utility.php
@@ -0,0 +1,63 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * ODBC Utility Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/database/
+ */
+class CI_DB_odbc_utility extends CI_DB_utility {
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+
+}
diff --git a/system/database/drivers/pdo/index.html b/system/database/drivers/pdo/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/pdo/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/pdo/pdo_driver.php b/system/database/drivers/pdo/pdo_driver.php
new file mode 100644
index 00000000..d0a2bf95
--- /dev/null
+++ b/system/database/drivers/pdo/pdo_driver.php
@@ -0,0 +1,342 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'pdo';
+
+	/**
+	 * PDO Options
+	 *
+	 * @var	array
+	 */
+	public $options = array();
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Validates the DSN string and/or detects the subdriver.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (preg_match('/([^:]+):/', $this->dsn, $match) && count($match) === 2)
+		{
+			// If there is a minimum valid dsn string pattern found, we're done
+			// This is for general PDO users, who tend to have a full DSN string.
+			$this->subdriver = $match[1];
+			return;
+		}
+		// Legacy support for DSN specified in the hostname field
+		elseif (preg_match('/([^:]+):/', $this->hostname, $match) && count($match) === 2)
+		{
+			$this->dsn = $this->hostname;
+			$this->hostname = NULL;
+			$this->subdriver = $match[1];
+			return;
+		}
+		elseif (in_array($this->subdriver, array('mssql', 'sybase'), TRUE))
+		{
+			$this->subdriver = 'dblib';
+		}
+		elseif ($this->subdriver === '4D')
+		{
+			$this->subdriver = '4d';
+		}
+		elseif ( ! in_array($this->subdriver, array('4d', 'cubrid', 'dblib', 'firebird', 'ibm', 'informix', 'mysql', 'oci', 'odbc', 'pgsql', 'sqlite', 'sqlsrv'), TRUE))
+		{
+			log_message('error', 'PDO: Invalid or non-existent subdriver');
+
+			if ($this->db_debug)
+			{
+				show_error('Invalid or non-existent PDO subdriver');
+			}
+		}
+
+		$this->dsn = NULL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	object
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		if ($persistent === TRUE)
+		{
+			$this->options[PDO::ATTR_PERSISTENT] = TRUE;
+		}
+
+		try
+		{
+			return new PDO($this->dsn, $this->username, $this->password, $this->options);
+		}
+		catch (PDOException $e)
+		{
+			if ($this->db_debug && empty($this->failover))
+			{
+				$this->display_error($e->getMessage(), '', TRUE);
+			}
+
+			return FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		// Not all subdrivers support the getAttribute() method
+		try
+		{
+			return $this->data_cache['version'] = $this->conn_id->getAttribute(PDO::ATTR_SERVER_VERSION);
+		}
+		catch (PDOException $e)
+		{
+			return parent::version();
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	SQL query
+	 * @return	mixed
+	 */
+	protected function _execute($sql)
+	{
+		return $this->conn_id->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		return $this->conn_id->beginTransaction();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		return $this->conn_id->commit();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		return $this->conn_id->rollBack();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		// Escape the string
+		$str = $this->conn_id->quote($str);
+
+		// If there are duplicated quotes, trim them away
+		return ($str[0] === "'")
+			? substr($str, 1, -1)
+			: $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return is_object($this->result_id) ? $this->result_id->rowCount() : 0;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @param	string	$name
+	 * @return	int
+	 */
+	public function insert_id($name = NULL)
+	{
+		return $this->conn_id->lastInsertId($name);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data query
+	 *
+	 * Generates a platform-specific query so that the column data can be retrieved
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _field_data($table)
+	{
+		return 'SELECT TOP 1 * FROM '.$this->protect_identifiers($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		$error = array('code' => '00000', 'message' => '');
+		$pdo_error = $this->conn_id->errorInfo();
+
+		if (empty($pdo_error[0]))
+		{
+			return $error;
+		}
+
+		$error['code'] = isset($pdo_error[1]) ? $pdo_error[0].'/'.$pdo_error[1] : $pdo_error[0];
+		if (isset($pdo_error[2]))
+		{
+			$error['message'] = $pdo_error[2];
+		}
+
+		return $error;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE TABLE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		$this->result_id = FALSE;
+		$this->conn_id = FALSE;
+	}
+
+}
diff --git a/system/database/drivers/pdo/pdo_forge.php b/system/database/drivers/pdo/pdo_forge.php
new file mode 100644
index 00000000..e512d3d6
--- /dev/null
+++ b/system/database/drivers/pdo/pdo_forge.php
@@ -0,0 +1,65 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Forge Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/database/
+ */
+class CI_DB_pdo_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= FALSE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= FALSE;
+
+}
diff --git a/system/database/drivers/pdo/pdo_result.php b/system/database/drivers/pdo/pdo_result.php
new file mode 100644
index 00000000..f0f56c3f
--- /dev/null
+++ b/system/database/drivers/pdo/pdo_result.php
@@ -0,0 +1,198 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		if (is_int($this->num_rows))
+		{
+			return $this->num_rows;
+		}
+		elseif (count($this->result_array) > 0)
+		{
+			return $this->num_rows = count($this->result_array);
+		}
+		elseif (count($this->result_object) > 0)
+		{
+			return $this->num_rows = count($this->result_object);
+		}
+		elseif (($num_rows = $this->result_id->rowCount()) > 0)
+		{
+			return $this->num_rows = $num_rows;
+		}
+
+		return $this->num_rows = count($this->result_array());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return $this->result_id->columnCount();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	bool
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			// Might trigger an E_WARNING due to not all subdrivers
+			// supporting getColumnMeta()
+			$field_names[$i] = @$this->result_id->getColumnMeta($i);
+			$field_names[$i] = $field_names[$i]['name'];
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		try
+		{
+			$retval = array();
+
+			for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+			{
+				$field = $this->result_id->getColumnMeta($i);
+
+				$retval[$i]			= new stdClass();
+				$retval[$i]->name		= $field['name'];
+				$retval[$i]->type		= isset($field['native_type']) ? $field['native_type'] : null;
+				$retval[$i]->max_length		= ($field['len'] > 0) ? $field['len'] : NULL;
+				$retval[$i]->primary_key	= (int) ( ! empty($field['flags']) && in_array('primary_key', $field['flags'], TRUE));
+			}
+
+			return $retval;
+		}
+		catch (Exception $e)
+		{
+			if ($this->db->db_debug)
+			{
+				return $this->db->display_error('db_unsupported_feature');
+			}
+
+			return FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_object($this->result_id))
+		{
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return $this->result_id->fetch(PDO::FETCH_ASSOC);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return $this->result_id->fetchObject($class_name);
+	}
+
+}
diff --git a/system/database/drivers/pdo/pdo_utility.php b/system/database/drivers/pdo/pdo_utility.php
new file mode 100644
index 00000000..6c40cf32
--- /dev/null
+++ b/system/database/drivers/pdo/pdo_utility.php
@@ -0,0 +1,63 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.1.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Utility Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/database/
+ */
+class CI_DB_pdo_utility extends CI_DB_utility {
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/index.html b/system/database/drivers/pdo/subdrivers/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/pdo/subdrivers/pdo_4d_driver.php b/system/database/drivers/pdo/subdrivers/pdo_4d_driver.php
new file mode 100644
index 00000000..63f6f84b
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_4d_driver.php
@@ -0,0 +1,200 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO 4D Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_4d_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = '4d';
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string[]
+	 */
+	protected $_escape_char = array('[', ']');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = '4D:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+			empty($this->port) OR $this->dsn .= ';port='.$this->port;
+			empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
+			empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+		}
+		elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 3) === FALSE)
+		{
+			$this->dsn .= ';charset='.$this->char_set;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT '.$this->escape_identifiers('TABLE_NAME').' FROM '.$this->escape_identifiers('_USER_TABLES');
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			$sql .= ' WHERE '.$this->escape_identifiers('TABLE_NAME')." LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT '.$this->escape_identifiers('COLUMN_NAME').' FROM '.$this->escape_identifiers('_USER_COLUMNS')
+			.' WHERE '.$this->escape_identifiers('TABLE_NAME').' = '.$this->escape($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data query
+	 *
+	 * Generates a platform-specific query so that the column data can be retrieved
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _field_data($table)
+	{
+		return 'SELECT * FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE).' LIMIT 1';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		return $sql.' LIMIT '.$this->qb_limit.($this->qb_offset ? ' OFFSET '.$this->qb_offset : '');
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_4d_forge.php b/system/database/drivers/pdo/subdrivers/pdo_4d_forge.php
new file mode 100644
index 00000000..f7fa5431
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_4d_forge.php
@@ -0,0 +1,217 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO 4D Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_4d_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= 'CREATE SCHEMA %s';
+
+	/**
+	 * DROP DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_database	= 'DROP SCHEMA %s';
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= 'CREATE TABLE IF NOT EXISTS';
+
+	/**
+	 * RENAME TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_rename_table	= FALSE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'INT16'		=> 'INT',
+		'SMALLINT'	=> 'INT',
+		'INT'		=> 'INT64',
+		'INT32'		=> 'INT64'
+	);
+
+	/**
+	 * DEFAULT value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_default		= FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('ADD', 'DROP'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		// No method of modifying columns is supported
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type'].$field['length']
+			.$field['null']
+			.$field['unique']
+			.$field['auto_increment'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INTEGER':
+				$attributes['TYPE'] = 'INT';
+				return;
+			case 'BIGINT':
+				$attributes['TYPE'] = 'INT64';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute UNIQUE
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_unique(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['UNIQUE']) && $attributes['UNIQUE'] === TRUE)
+		{
+			$field['unique'] = ' UNIQUE';
+
+			// UNIQUE must be used with NOT NULL
+			$field['null'] = ' NOT NULL';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE)
+		{
+			if (stripos($field['type'], 'int') !== FALSE)
+			{
+				$field['auto_increment'] = ' AUTO_INCREMENT';
+			}
+			elseif (strcasecmp($field['type'], 'UUID') === 0)
+			{
+				$field['auto_increment'] = ' AUTO_GENERATE';
+			}
+		}
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_cubrid_driver.php b/system/database/drivers/pdo/subdrivers/pdo_cubrid_driver.php
new file mode 100644
index 00000000..05887bcf
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_cubrid_driver.php
@@ -0,0 +1,209 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO CUBRID Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_cubrid_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'cubrid';
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '`';
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var array
+	 */
+	protected $_random_keyword = array('RANDOM()', 'RANDOM(%d)');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'cubrid:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+			empty($this->port) OR $this->dsn .= ';port='.$this->port;
+			empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
+			empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SHOW TABLES';
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->Field;
+
+			sscanf($query[$i]->Type, '%[a-z](%d)',
+				$retval[$i]->type,
+				$retval[$i]->max_length
+			);
+
+			$retval[$i]->default		= $query[$i]->Default;
+			$retval[$i]->primary_key	= (int) ($query[$i]->Key === 'PRI');
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FROM tables
+	 *
+	 * Groups tables in FROM clauses if needed, so there is no confusion
+	 * about operator precedence.
+	 *
+	 * @return	string
+	 */
+	protected function _from_tables()
+	{
+		if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
+		{
+			return '('.implode(', ', $this->qb_from).')';
+		}
+
+		return implode(', ', $this->qb_from);
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_cubrid_forge.php b/system/database/drivers/pdo/subdrivers/pdo_cubrid_forge.php
new file mode 100644
index 00000000..32ccc8cc
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_cubrid_forge.php
@@ -0,0 +1,230 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO CUBRID Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_cubrid_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= FALSE;
+
+	/**
+	 * DROP DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_database	= FALSE;
+
+	/**
+	 * CREATE TABLE keys flag
+	 *
+	 * Whether table keys are created from within the
+	 * CREATE TABLE statement.
+	 *
+	 * @var	bool
+	 */
+	protected $_create_table_keys	= TRUE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'SHORT'		=> 'INTEGER',
+		'SMALLINT'	=> 'INTEGER',
+		'INT'		=> 'BIGINT',
+		'INTEGER'	=> 'BIGINT',
+		'BIGINT'	=> 'NUMERIC',
+		'FLOAT'		=> 'DOUBLE',
+		'REAL'		=> 'DOUBLE'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$sqls[] = $sql.' CHANGE '.$field[$i]['_literal'];
+			}
+			else
+			{
+				$alter_type = empty($field[$i]['new_name']) ? ' MODIFY ' : ' CHANGE ';
+				$sqls[] = $sql.$alter_type.$this->_process_column($field[$i]);
+			}
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		$extra_clause = isset($field['after'])
+			? ' AFTER '.$this->db->escape_identifiers($field['after']) : '';
+
+		if (empty($extra_clause) && isset($field['first']) && $field['first'] === TRUE)
+		{
+			$extra_clause = ' FIRST';
+		}
+
+		return $this->db->escape_identifiers($field['name'])
+			.(empty($field['new_name']) ? '' : ' '.$this->db->escape_identifiers($field['new_name']))
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['null']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['unique']
+			.$extra_clause;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'LONGTEXT':
+				$attributes['TYPE'] = 'STRING';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process indexes
+	 *
+	 * @param	string	$table	(ignored)
+	 * @return	string
+	 */
+	protected function _process_indexes($table)
+	{
+		$sql = '';
+
+		for ($i = 0, $c = count($this->keys); $i < $c; $i++)
+		{
+			if (is_array($this->keys[$i]))
+			{
+				for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
+				{
+					if ( ! isset($this->fields[$this->keys[$i][$i2]]))
+					{
+						unset($this->keys[$i][$i2]);
+						continue;
+					}
+				}
+			}
+			elseif ( ! isset($this->fields[$this->keys[$i]]))
+			{
+				unset($this->keys[$i]);
+				continue;
+			}
+
+			is_array($this->keys[$i]) OR $this->keys[$i] = array($this->keys[$i]);
+
+			$sql .= ",\n\tKEY ".$this->db->escape_identifiers(implode('_', $this->keys[$i]))
+				.' ('.implode(', ', $this->db->escape_identifiers($this->keys[$i])).')';
+		}
+
+		$this->keys = array();
+
+		return $sql;
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php b/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php
new file mode 100644
index 00000000..06f03ccc
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php
@@ -0,0 +1,353 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO DBLIB Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_dblib_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'dblib';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('NEWID()', 'RAND(%d)');
+
+	/**
+	 * Quoted identifier flag
+	 *
+	 * Whether to use SQL-92 standard quoted identifier
+	 * (double quotes) or brackets for identifier escaping.
+	 *
+	 * @var	bool
+	 */
+	protected $_quoted_identifier;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = $params['subdriver'].':host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+			if ( ! empty($this->port))
+			{
+				$this->dsn .= (DIRECTORY_SEPARATOR === '\\' ? ',' : ':').$this->port;
+			}
+
+			empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
+			empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+			empty($this->appname) OR $this->dsn .= ';appname='.$this->appname;
+		}
+		else
+		{
+			if ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 6) === FALSE)
+			{
+				$this->dsn .= ';charset='.$this->char_set;
+			}
+
+			$this->subdriver = 'dblib';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	object
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		if ($persistent === TRUE)
+		{
+			log_message('debug', "dblib driver doesn't support persistent connections");
+		}
+
+		$this->conn_id = parent::db_connect(FALSE);
+
+		if ( ! is_object($this->conn_id))
+		{
+			return $this->conn_id;
+		}
+
+		// Determine how identifiers are escaped
+		$query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
+		$query = $query->row_array();
+		$this->_quoted_identifier = empty($query) ? FALSE : (bool) $query['qi'];
+		$this->_escape_char = ($this->_quoted_identifier) ? '"' : array('[', ']');
+
+		return $this->conn_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT '.$this->escape_identifiers('name')
+			.' FROM '.$this->escape_identifiers('sysobjects')
+			.' WHERE '.$this->escape_identifiers('type')." = 'U'";
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			$sql .= ' AND '.$this->escape_identifiers('name')." LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql.' ORDER BY '.$this->escape_identifiers('name');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT COLUMN_NAME
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, COLUMN_DEFAULT
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->COLUMN_NAME;
+			$retval[$i]->type		= $query[$i]->DATA_TYPE;
+			$retval[$i]->max_length		= ($query[$i]->CHARACTER_MAXIMUM_LENGTH > 0) ? $query[$i]->CHARACTER_MAXIMUM_LENGTH : $query[$i]->NUMERIC_PRECISION;
+			$retval[$i]->default		= $query[$i]->COLUMN_DEFAULT;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		if ($this->qb_limit)
+		{
+			return 'WITH ci_delete AS (SELECT TOP '.$this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
+		}
+
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		$limit = $this->qb_offset + $this->qb_limit;
+
+		// As of SQL Server 2005 (9.0.*) ROW_NUMBER() is supported,
+		// however an ORDER BY clause is required for it to work
+		if (version_compare($this->version(), '9', '>=') && $this->qb_offset && ! empty($this->qb_orderby))
+		{
+			$orderby = $this->_compile_order_by();
+
+			// We have to strip the ORDER BY clause
+			$sql = trim(substr($sql, 0, strrpos($sql, $orderby)));
+
+			// Get the fields to select from our subquery, so that we can avoid CI_rownum appearing in the actual results
+			if (count($this->qb_select) === 0 OR strpos(implode(',', $this->qb_select), '*') !== FALSE)
+			{
+				$select = '*'; // Inevitable
+			}
+			else
+			{
+				// Use only field names and their aliases, everything else is out of our scope.
+				$select = array();
+				$field_regexp = ($this->_quoted_identifier)
+					? '("[^\"]+")' : '(\[[^\]]+\])';
+				for ($i = 0, $c = count($this->qb_select); $i < $c; $i++)
+				{
+					$select[] = preg_match('/(?:\s|\.)'.$field_regexp.'$/i', $this->qb_select[$i], $m)
+						? $m[1] : $this->qb_select[$i];
+				}
+				$select = implode(', ', $select);
+			}
+
+			return 'SELECT '.$select." FROM (\n\n"
+				.preg_replace('/^(SELECT( DISTINCT)?)/i', '\\1 ROW_NUMBER() OVER('.trim($orderby).') AS '.$this->escape_identifiers('CI_rownum').', ', $sql)
+				."\n\n) ".$this->escape_identifiers('CI_subquery')
+				."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.($this->qb_offset + 1).' AND '.$limit;
+		}
+
+		return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		// Multiple-value inserts are only supported as of SQL Server 2008
+		if (version_compare($this->version(), '10', '>='))
+		{
+			return parent::_insert_batch($table, $keys, $values);
+		}
+
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return      string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		return $this->data_cache['version'] = $this->conn_id->query("SELECT SERVERPROPERTY('ProductVersion') AS ver")->fetchColumn(0);
+	}
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_dblib_forge.php b/system/database/drivers/pdo/subdrivers/pdo_dblib_forge.php
new file mode 100644
index 00000000..692b76d8
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_dblib_forge.php
@@ -0,0 +1,149 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO DBLIB Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_dblib_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= "IF NOT EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nCREATE TABLE";
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= "IF EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nDROP TABLE";
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT'	=> 'SMALLINT',
+		'SMALLINT'	=> 'INT',
+		'INT'		=> 'BIGINT',
+		'REAL'		=> 'FLOAT'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('ADD', 'DROP'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table).' ALTER COLUMN ';
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			$sqls[] = $sql.$this->_process_column($field[$i]);
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		if (isset($attributes['CONSTRAINT']) && strpos($attributes['TYPE'], 'INT') !== FALSE)
+		{
+			unset($attributes['CONSTRAINT']);
+		}
+
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INTEGER':
+				$attributes['TYPE'] = 'INT';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['auto_increment'] = ' IDENTITY(1,1)';
+		}
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php b/system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php
new file mode 100644
index 00000000..4e4dd27e
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php
@@ -0,0 +1,279 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Firebird Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_firebird_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'firebird';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RAND()', 'RAND()');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'firebird:';
+
+			if ( ! empty($this->database))
+			{
+				$this->dsn .= 'dbname='.$this->database;
+			}
+			elseif ( ! empty($this->hostname))
+			{
+				$this->dsn .= 'dbname='.$this->hostname;
+			}
+
+			empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+			empty($this->role) OR $this->dsn .= ';role='.$this->role;
+		}
+		elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 9) === FALSE)
+		{
+			$this->dsn .= ';charset='.$this->char_set;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "RDB$RELATION_NAME" FROM "RDB$RELATIONS" WHERE "RDB$RELATION_NAME" NOT LIKE \'RDB$%\' AND "RDB$RELATION_NAME" NOT LIKE \'MON$%\'';
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			return $sql.' AND "RDB$RELATION_NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT "RDB$FIELD_NAME" FROM "RDB$RELATION_FIELDS" WHERE "RDB$RELATION_NAME" = '.$this->escape($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "rfields"."RDB$FIELD_NAME" AS "name",
+				CASE "fields"."RDB$FIELD_TYPE"
+					WHEN 7 THEN \'SMALLINT\'
+					WHEN 8 THEN \'INTEGER\'
+					WHEN 9 THEN \'QUAD\'
+					WHEN 10 THEN \'FLOAT\'
+					WHEN 11 THEN \'DFLOAT\'
+					WHEN 12 THEN \'DATE\'
+					WHEN 13 THEN \'TIME\'
+					WHEN 14 THEN \'CHAR\'
+					WHEN 16 THEN \'INT64\'
+					WHEN 27 THEN \'DOUBLE\'
+					WHEN 35 THEN \'TIMESTAMP\'
+					WHEN 37 THEN \'VARCHAR\'
+					WHEN 40 THEN \'CSTRING\'
+					WHEN 261 THEN \'BLOB\'
+					ELSE NULL
+				END AS "type",
+				"fields"."RDB$FIELD_LENGTH" AS "max_length",
+				"rfields"."RDB$DEFAULT_VALUE" AS "default"
+			FROM "RDB$RELATION_FIELDS" "rfields"
+				JOIN "RDB$FIELDS" "fields" ON "rfields"."RDB$FIELD_SOURCE" = "fields"."RDB$FIELD_NAME"
+			WHERE "rfields"."RDB$RELATION_NAME" = '.$this->escape($table).'
+			ORDER BY "rfields"."RDB$FIELD_POSITION"';
+
+		return (($query = $this->query($sql)) !== FALSE)
+			? $query->result_object()
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'DELETE FROM '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		// Limit clause depends on if Interbase or Firebird
+		if (stripos($this->version(), 'firebird') !== FALSE)
+		{
+			$select = 'FIRST '.$this->qb_limit
+				.($this->qb_offset > 0 ? ' SKIP '.$this->qb_offset : '');
+		}
+		else
+		{
+			$select = 'ROWS '
+				.($this->qb_offset > 0 ? $this->qb_offset.' TO '.($this->qb_limit + $this->qb_offset) : $this->qb_limit);
+		}
+
+		return preg_replace('`SELECT`i', 'SELECT '.$select, $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_firebird_forge.php b/system/database/drivers/pdo/subdrivers/pdo_firebird_forge.php
new file mode 100644
index 00000000..c3d25b6f
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_firebird_forge.php
@@ -0,0 +1,237 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Firebird Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_firebird_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * RENAME TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_rename_table	= FALSE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'SMALLINT'	=> 'INTEGER',
+		'INTEGER'	=> 'INT64',
+		'FLOAT'		=> 'DOUBLE PRECISION'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create database
+	 *
+	 * @param	string	$db_name
+	 * @return	string
+	 */
+	public function create_database($db_name)
+	{
+		// Firebird databases are flat files, so a path is required
+
+		// Hostname is needed for remote access
+		empty($this->db->hostname) OR $db_name = $this->hostname.':'.$db_name;
+
+		return parent::create_database('"'.$db_name.'"');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @param	string	$db_name	(ignored)
+	 * @return	bool
+	 */
+	public function drop_database($db_name)
+	{
+		if ( ! ibase_drop_db($this->conn_id))
+		{
+			return ($this->db->db_debug) ? $this->db->display_error('db_unable_to_drop') : FALSE;
+		}
+		elseif ( ! empty($this->db->data_cache['db_names']))
+		{
+			$key = array_search(strtolower($this->db->database), array_map('strtolower', $this->db->data_cache['db_names']), TRUE);
+			if ($key !== FALSE)
+			{
+				unset($this->db->data_cache['db_names'][$key]);
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				return FALSE;
+			}
+
+			if (isset($field[$i]['type']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TYPE '.$field[$i]['type'].$field[$i]['length'];
+			}
+
+			if ( ! empty($field[$i]['default']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' SET '.$field[$i]['default'];
+			}
+
+			if (isset($field[$i]['null']))
+			{
+				$sqls[] = 'UPDATE "RDB$RELATION_FIELDS" SET "RDB$NULL_FLAG" = '
+					.($field[$i]['null'] === TRUE ? 'NULL' : '1')
+					.' WHERE "RDB$FIELD_NAME" = '.$this->db->escape($field[$i]['name'])
+					.' AND "RDB$RELATION_NAME" = '.$this->db->escape($table);
+			}
+
+			if ( ! empty($field[$i]['new_name']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
+			}
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type'].$field['length']
+			.$field['null']
+			.$field['unique']
+			.$field['default'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INT':
+				$attributes['TYPE'] = 'INTEGER';
+				return;
+			case 'BIGINT':
+				$attributes['TYPE'] = 'INT64';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		// Not supported
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_ibm_driver.php b/system/database/drivers/pdo/subdrivers/pdo_ibm_driver.php
new file mode 100644
index 00000000..16b1c6e1
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_ibm_driver.php
@@ -0,0 +1,244 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO IBM DB2 Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_ibm_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'ibm';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'ibm:';
+
+			// Pre-defined DSN
+			if (empty($this->hostname) && empty($this->HOSTNAME) && empty($this->port) && empty($this->PORT))
+			{
+				if (isset($this->DSN))
+				{
+					$this->dsn .= 'DSN='.$this->DSN;
+				}
+				elseif ( ! empty($this->database))
+				{
+					$this->dsn .= 'DSN='.$this->database;
+				}
+
+				return;
+			}
+
+			$this->dsn .= 'DRIVER='.(isset($this->DRIVER) ? '{'.$this->DRIVER.'}' : '{IBM DB2 ODBC DRIVER}').';';
+
+			if (isset($this->DATABASE))
+			{
+				$this->dsn .= 'DATABASE='.$this->DATABASE.';';
+			}
+			elseif ( ! empty($this->database))
+			{
+				$this->dsn .= 'DATABASE='.$this->database.';';
+			}
+
+			if (isset($this->HOSTNAME))
+			{
+				$this->dsn .= 'HOSTNAME='.$this->HOSTNAME.';';
+			}
+			else
+			{
+				$this->dsn .= 'HOSTNAME='.(empty($this->hostname) ? '127.0.0.1;' : $this->hostname.';');
+			}
+
+			if (isset($this->PORT))
+			{
+				$this->dsn .= 'PORT='.$this->port.';';
+			}
+			elseif ( ! empty($this->port))
+			{
+				$this->dsn .= ';PORT='.$this->port.';';
+			}
+
+			$this->dsn .= 'PROTOCOL='.(isset($this->PROTOCOL) ? $this->PROTOCOL.';' : 'TCPIP;');
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "tabname" FROM "syscat"."tables"
+			WHERE "type" = \'T\' AND LOWER("tabschema") = '.$this->escape(strtolower($this->database));
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			$sql .= ' AND "tabname" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT "colname" FROM "syscat"."columns"
+			WHERE LOWER("tabschema") = '.$this->escape(strtolower($this->database)).'
+				AND LOWER("tabname") = '.$this->escape(strtolower($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "colname" AS "name", "typename" AS "type", "default" AS "default", "length" AS "max_length",
+				CASE "keyseq" WHEN NULL THEN 0 ELSE 1 END AS "primary_key"
+			FROM "syscat"."columns"
+			WHERE LOWER("tabschema") = '.$this->escape(strtolower($this->database)).'
+				AND LOWER("tabname") = '.$this->escape(strtolower($table)).'
+			ORDER BY "colno"';
+
+		return (($query = $this->query($sql)) !== FALSE)
+			? $query->result_object()
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		$sql .= ' FETCH FIRST '.($this->qb_limit + $this->qb_offset).' ROWS ONLY';
+
+		return ($this->qb_offset)
+			? 'SELECT * FROM ('.$sql.') WHERE rownum > '.$this->qb_offset
+			: $sql;
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_ibm_forge.php b/system/database/drivers/pdo/subdrivers/pdo_ibm_forge.php
new file mode 100644
index 00000000..8ea4838d
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_ibm_forge.php
@@ -0,0 +1,154 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO IBM DB2 Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_ibm_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * RENAME TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_rename_table	= 'RENAME TABLE %s TO %s';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'SMALLINT'	=> 'INTEGER',
+		'INT'		=> 'BIGINT',
+		'INTEGER'	=> 'BIGINT'
+	);
+
+	/**
+	 * DEFAULT value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_default		= FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'CHANGE')
+		{
+			$alter_type = 'MODIFY';
+		}
+
+		return parent::_alter_table($alter_type, $table, $field);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute UNIQUE
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_unique(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['UNIQUE']) && $attributes['UNIQUE'] === TRUE)
+		{
+			$field['unique'] = ' UNIQUE';
+
+			// UNIQUE must be used with NOT NULL
+			$field['null'] = ' NOT NULL';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		// Not supported
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_informix_driver.php b/system/database/drivers/pdo/subdrivers/pdo_informix_driver.php
new file mode 100644
index 00000000..98f46389
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_informix_driver.php
@@ -0,0 +1,309 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Informix Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_informix_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'informix';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('ASC', 'ASC'); // Currently not supported
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'informix:';
+
+			// Pre-defined DSN
+			if (empty($this->hostname) && empty($this->host) && empty($this->port) && empty($this->service))
+			{
+				if (isset($this->DSN))
+				{
+					$this->dsn .= 'DSN='.$this->DSN;
+				}
+				elseif ( ! empty($this->database))
+				{
+					$this->dsn .= 'DSN='.$this->database;
+				}
+
+				return;
+			}
+
+			if (isset($this->host))
+			{
+				$this->dsn .= 'host='.$this->host;
+			}
+			else
+			{
+				$this->dsn .= 'host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+			}
+
+			if (isset($this->service))
+			{
+				$this->dsn .= '; service='.$this->service;
+			}
+			elseif ( ! empty($this->port))
+			{
+				$this->dsn .= '; service='.$this->port;
+			}
+
+			empty($this->database) OR $this->dsn .= '; database='.$this->database;
+			empty($this->server) OR $this->dsn .= '; server='.$this->server;
+
+			$this->dsn .= '; protocol='.(isset($this->protocol) ? $this->protocol : 'onsoctcp')
+				.'; EnableScrollableCursors=1';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "tabname" FROM "systables"
+			WHERE "tabid" > 99 AND "tabtype" = \'T\' AND LOWER("owner") = '.$this->escape(strtolower($this->username));
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			$sql .= ' AND "tabname" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		if (strpos($table, '.') !== FALSE)
+		{
+			sscanf($table, '%[^.].%s', $owner, $table);
+		}
+		else
+		{
+			$owner = $this->username;
+		}
+
+		return 'SELECT "colname" FROM "systables", "syscolumns"
+			WHERE "systables"."tabid" = "syscolumns"."tabid"
+				AND "systables"."tabtype" = \'T\'
+				AND LOWER("systables"."owner") = '.$this->escape(strtolower($owner)).'
+				AND LOWER("systables"."tabname") = '.$this->escape(strtolower($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "syscolumns"."colname" AS "name",
+				CASE "syscolumns"."coltype"
+					WHEN 0 THEN \'CHAR\'
+					WHEN 1 THEN \'SMALLINT\'
+					WHEN 2 THEN \'INTEGER\'
+					WHEN 3 THEN \'FLOAT\'
+					WHEN 4 THEN \'SMALLFLOAT\'
+					WHEN 5 THEN \'DECIMAL\'
+					WHEN 6 THEN \'SERIAL\'
+					WHEN 7 THEN \'DATE\'
+					WHEN 8 THEN \'MONEY\'
+					WHEN 9 THEN \'NULL\'
+					WHEN 10 THEN \'DATETIME\'
+					WHEN 11 THEN \'BYTE\'
+					WHEN 12 THEN \'TEXT\'
+					WHEN 13 THEN \'VARCHAR\'
+					WHEN 14 THEN \'INTERVAL\'
+					WHEN 15 THEN \'NCHAR\'
+					WHEN 16 THEN \'NVARCHAR\'
+					WHEN 17 THEN \'INT8\'
+					WHEN 18 THEN \'SERIAL8\'
+					WHEN 19 THEN \'SET\'
+					WHEN 20 THEN \'MULTISET\'
+					WHEN 21 THEN \'LIST\'
+					WHEN 22 THEN \'Unnamed ROW\'
+					WHEN 40 THEN \'LVARCHAR\'
+					WHEN 41 THEN \'BLOB/CLOB/BOOLEAN\'
+					WHEN 4118 THEN \'Named ROW\'
+					ELSE "syscolumns"."coltype"
+				END AS "type",
+				"syscolumns"."collength" as "max_length",
+				CASE "sysdefaults"."type"
+					WHEN \'L\' THEN "sysdefaults"."default"
+					ELSE NULL
+				END AS "default"
+			FROM "syscolumns", "systables", "sysdefaults"
+			WHERE "syscolumns"."tabid" = "systables"."tabid"
+				AND "systables"."tabid" = "sysdefaults"."tabid"
+				AND "syscolumns"."colno" = "sysdefaults"."colno"
+				AND "systables"."tabtype" = \'T\'
+				AND LOWER("systables"."owner") = '.$this->escape(strtolower($this->username)).'
+				AND LOWER("systables"."tabname") = '.$this->escape(strtolower($table)).'
+			ORDER BY "syscolumns"."colno"';
+
+		return (($query = $this->query($sql)) !== FALSE)
+			? $query->result_object()
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE TABLE ONLY '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	$SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		$select = 'SELECT '.($this->qb_offset ? 'SKIP '.$this->qb_offset : '').'FIRST '.$this->qb_limit.' ';
+		return preg_replace('/^(SELECT\s)/i', $select, $sql, 1);
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_informix_forge.php b/system/database/drivers/pdo/subdrivers/pdo_informix_forge.php
new file mode 100644
index 00000000..91a93590
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_informix_forge.php
@@ -0,0 +1,163 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Informix Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_informix_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * RENAME TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_rename_table	= 'RENAME TABLE %s TO %s';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'SMALLINT'	=> 'INTEGER',
+		'INT'		=> 'BIGINT',
+		'INTEGER'	=> 'BIGINT',
+		'REAL'		=> 'DOUBLE PRECISION',
+		'SMALLFLOAT'	=> 'DOUBLE PRECISION'
+	);
+
+	/**
+	 * DEFAULT value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_default		= ', ';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'CHANGE')
+		{
+			$alter_type = 'MODIFY';
+		}
+
+		return parent::_alter_table($alter_type, $table, $field);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'BYTE':
+			case 'TEXT':
+			case 'BLOB':
+			case 'CLOB':
+				$attributes['UNIQUE'] = FALSE;
+				if (isset($attributes['DEFAULT']))
+				{
+					unset($attributes['DEFAULT']);
+				}
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute UNIQUE
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_unique(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['UNIQUE']) && $attributes['UNIQUE'] === TRUE)
+		{
+			$field['unique'] = ' UNIQUE CONSTRAINT '.$this->db->escape_identifiers($field['name']);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		// Not supported
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php b/system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php
new file mode 100644
index 00000000..0f53e319
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php
@@ -0,0 +1,379 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO MySQL Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_mysql_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'mysql';
+
+	/**
+	 * Compression flag
+	 *
+	 * @var	bool
+	 */
+	public $compress = FALSE;
+
+	/**
+	 * Strict ON flag
+	 *
+	 * Whether we're running in strict SQL mode.
+	 *
+	 * @var	bool
+	 */
+	public $stricton;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Identifier escape character
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '`';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'mysql:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+			empty($this->port) OR $this->dsn .= ';port='.$this->port;
+			empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
+			empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+		}
+		elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 6) === FALSE)
+		{
+			$this->dsn .= ';charset='.$this->char_set;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	object
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		if (isset($this->stricton))
+		{
+			if ($this->stricton)
+			{
+				$sql = 'CONCAT(@@sql_mode, ",", "STRICT_ALL_TABLES")';
+			}
+			else
+			{
+				$sql = 'REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(
+                                        @@sql_mode,
+                                        "STRICT_ALL_TABLES,", ""),
+                                        ",STRICT_ALL_TABLES", ""),
+                                        "STRICT_ALL_TABLES", ""),
+                                        "STRICT_TRANS_TABLES,", ""),
+                                        ",STRICT_TRANS_TABLES", ""),
+                                        "STRICT_TRANS_TABLES", "")';
+			}
+
+			if ( ! empty($sql))
+			{
+				if (empty($this->options[PDO::MYSQL_ATTR_INIT_COMMAND]))
+				{
+					$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET SESSION sql_mode = '.$sql;
+				}
+				else
+				{
+					$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] .= ', @@session.sql_mode = '.$sql;
+				}
+			}
+		}
+
+		if ($this->compress === TRUE)
+		{
+			$this->options[PDO::MYSQL_ATTR_COMPRESS] = TRUE;
+		}
+
+		if (is_array($this->encrypt))
+		{
+			$ssl = array();
+			empty($this->encrypt['ssl_key'])    OR $ssl[PDO::MYSQL_ATTR_SSL_KEY]    = $this->encrypt['ssl_key'];
+			empty($this->encrypt['ssl_cert'])   OR $ssl[PDO::MYSQL_ATTR_SSL_CERT]   = $this->encrypt['ssl_cert'];
+			empty($this->encrypt['ssl_ca'])     OR $ssl[PDO::MYSQL_ATTR_SSL_CA]     = $this->encrypt['ssl_ca'];
+			empty($this->encrypt['ssl_capath']) OR $ssl[PDO::MYSQL_ATTR_SSL_CAPATH] = $this->encrypt['ssl_capath'];
+			empty($this->encrypt['ssl_cipher']) OR $ssl[PDO::MYSQL_ATTR_SSL_CIPHER] = $this->encrypt['ssl_cipher'];
+
+			if (defined('PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT') && isset($this->encrypt['ssl_verify']))
+			{
+				$ssl[PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT] = $this->encrypt['ssl_verify'];
+			}
+
+			// DO NOT use array_merge() here!
+			// It re-indexes numeric keys and the PDO_MYSQL_ATTR_SSL_* constants are integers.
+			empty($ssl) OR $this->options += $ssl;
+		}
+
+		// Prior to version 5.7.3, MySQL silently downgrades to an unencrypted connection if SSL setup fails
+		if (
+			($pdo = parent::db_connect($persistent)) !== FALSE
+			&& ! empty($ssl)
+			&& version_compare($pdo->getAttribute(PDO::ATTR_CLIENT_VERSION), '5.7.3', '<=')
+			&& empty($pdo->query("SHOW STATUS LIKE 'ssl_cipher'")->fetchObject()->Value)
+		)
+		{
+			$message = 'PDO_MYSQL was configured for an SSL connection, but got an unencrypted connection instead!';
+			log_message('error', $message);
+			return ($this->db_debug) ? $this->display_error($message, '', TRUE) : FALSE;
+		}
+
+		return $pdo;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @param	string	$database
+	 * @return	bool
+	 */
+	public function db_select($database = '')
+	{
+		if ($database === '')
+		{
+			$database = $this->database;
+		}
+
+		if (FALSE !== $this->simple_query('USE '.$this->escape_identifiers($database)))
+		{
+			$this->database = $database;
+			$this->data_cache = array();
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		$this->conn_id->setAttribute(PDO::ATTR_AUTOCOMMIT, FALSE);
+		return $this->conn_id->beginTransaction();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		if ($this->conn_id->commit())
+		{
+			$this->conn_id->setAttribute(PDO::ATTR_AUTOCOMMIT, TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		if ($this->conn_id->rollBack())
+		{
+			$this->conn_id->setAttribute(PDO::ATTR_AUTOCOMMIT, TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SHOW TABLES FROM '.$this->_escape_char.$this->database.$this->_escape_char;
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->Field;
+
+			sscanf($query[$i]->Type, '%[a-z](%d)',
+				$retval[$i]->type,
+				$retval[$i]->max_length
+			);
+
+			$retval[$i]->default		= $query[$i]->Default;
+			$retval[$i]->primary_key	= (int) ($query[$i]->Key === 'PRI');
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FROM tables
+	 *
+	 * Groups tables in FROM clauses if needed, so there is no confusion
+	 * about operator precedence.
+	 *
+	 * @return	string
+	 */
+	protected function _from_tables()
+	{
+		if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
+		{
+			return '('.implode(', ', $this->qb_from).')';
+		}
+
+		return implode(', ', $this->qb_from);
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_mysql_forge.php b/system/database/drivers/pdo/subdrivers/pdo_mysql_forge.php
new file mode 100644
index 00000000..7713f673
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_mysql_forge.php
@@ -0,0 +1,256 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO MySQL Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_mysql_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= 'CREATE DATABASE %s CHARACTER SET %s COLLATE %s';
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= 'CREATE TABLE IF NOT EXISTS';
+
+	/**
+	 * CREATE TABLE keys flag
+	 *
+	 * Whether table keys are created from within the
+	 * CREATE TABLE statement.
+	 *
+	 * @var	bool
+	 */
+	protected $_create_table_keys	= TRUE;
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT',
+		'SMALLINT',
+		'MEDIUMINT',
+		'INT',
+		'INTEGER',
+		'BIGINT',
+		'REAL',
+		'DOUBLE',
+		'DOUBLE PRECISION',
+		'FLOAT',
+		'DECIMAL',
+		'NUMERIC'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null = 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CREATE TABLE attributes
+	 *
+	 * @param	array	$attributes	Associative array of table attributes
+	 * @return	string
+	 */
+	protected function _create_table_attr($attributes)
+	{
+		$sql = '';
+
+		foreach (array_keys($attributes) as $key)
+		{
+			if (is_string($key))
+			{
+				$sql .= ' '.strtoupper($key).' = '.$attributes[$key];
+			}
+		}
+
+		if ( ! empty($this->db->char_set) && ! strpos($sql, 'CHARACTER SET') && ! strpos($sql, 'CHARSET'))
+		{
+			$sql .= ' DEFAULT CHARACTER SET = '.$this->db->char_set;
+		}
+
+		if ( ! empty($this->db->dbcollat) && ! strpos($sql, 'COLLATE'))
+		{
+			$sql .= ' COLLATE = '.$this->db->dbcollat;
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP')
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$field[$i] = ($alter_type === 'ADD')
+						? "\n\tADD ".$field[$i]['_literal']
+						: "\n\tMODIFY ".$field[$i]['_literal'];
+			}
+			else
+			{
+				if ($alter_type === 'ADD')
+				{
+					$field[$i]['_literal'] = "\n\tADD ";
+				}
+				else
+				{
+					$field[$i]['_literal'] = empty($field[$i]['new_name']) ? "\n\tMODIFY " : "\n\tCHANGE ";
+				}
+
+				$field[$i] = $field[$i]['_literal'].$this->_process_column($field[$i]);
+			}
+		}
+
+		return array($sql.implode(',', $field));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		$extra_clause = isset($field['after'])
+			? ' AFTER '.$this->db->escape_identifiers($field['after']) : '';
+
+		if (empty($extra_clause) && isset($field['first']) && $field['first'] === TRUE)
+		{
+			$extra_clause = ' FIRST';
+		}
+
+		return $this->db->escape_identifiers($field['name'])
+			.(empty($field['new_name']) ? '' : ' '.$this->db->escape_identifiers($field['new_name']))
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['null']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['unique']
+			.(empty($field['comment']) ? '' : ' COMMENT '.$field['comment'])
+			.$extra_clause;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process indexes
+	 *
+	 * @param	string	$table	(ignored)
+	 * @return	string
+	 */
+	protected function _process_indexes($table)
+	{
+		$sql = '';
+
+		for ($i = 0, $c = count($this->keys); $i < $c; $i++)
+		{
+			if (is_array($this->keys[$i]))
+			{
+				for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
+				{
+					if ( ! isset($this->fields[$this->keys[$i][$i2]]))
+					{
+						unset($this->keys[$i][$i2]);
+						continue;
+					}
+				}
+			}
+			elseif ( ! isset($this->fields[$this->keys[$i]]))
+			{
+				unset($this->keys[$i]);
+				continue;
+			}
+
+			is_array($this->keys[$i]) OR $this->keys[$i] = array($this->keys[$i]);
+
+			$sql .= ",\n\tKEY ".$this->db->escape_identifiers(implode('_', $this->keys[$i]))
+				.' ('.implode(', ', $this->db->escape_identifiers($this->keys[$i])).')';
+		}
+
+		$this->keys = array();
+
+		return $sql;
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php b/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php
new file mode 100644
index 00000000..82f0145b
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php
@@ -0,0 +1,326 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Oracle Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_oci_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'oci';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List of reserved identifiers
+	 *
+	 * Identifiers that must NOT be escaped.
+	 *
+	 * @var	string[]
+	 */
+	protected $_reserved_identifiers = array('*', 'rownum');
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('ASC', 'ASC'); // Currently not supported
+
+	/**
+	 * COUNT string
+	 *
+	 * @used-by	CI_DB_driver::count_all()
+	 * @used-by	CI_DB_query_builder::count_all_results()
+	 *
+	 * @var	string
+	 */
+	protected $_count_string = 'SELECT COUNT(1) AS ';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'oci:dbname=';
+
+			// Oracle has a slightly different PDO DSN format (Easy Connect),
+			// which also supports pre-defined DSNs.
+			if (empty($this->hostname) && empty($this->port))
+			{
+				$this->dsn .= $this->database;
+			}
+			else
+			{
+				$this->dsn .= '//'.(empty($this->hostname) ? '127.0.0.1' : $this->hostname)
+					.(empty($this->port) ? '' : ':'.$this->port).'/';
+
+				empty($this->database) OR $this->dsn .= $this->database;
+			}
+
+			empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+		}
+		elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 4) === FALSE)
+		{
+			$this->dsn .= ';charset='.$this->char_set;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		$version_string = parent::version();
+		if (preg_match('#(Release\s)?(?<version>\d+(?:\.\d+)+)#', $version_string, $match))
+		{
+			return $this->data_cache['version'] = $match['version'];
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "TABLE_NAME" FROM "ALL_TABLES"';
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			return $sql.' WHERE "TABLE_NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		if (strpos($table, '.') !== FALSE)
+		{
+			sscanf($table, '%[^.].%s', $owner, $table);
+		}
+		else
+		{
+			$owner = $this->username;
+		}
+
+		return 'SELECT COLUMN_NAME FROM ALL_TAB_COLUMNS
+			WHERE UPPER(OWNER) = '.$this->escape(strtoupper($owner)).'
+				AND UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (strpos($table, '.') !== FALSE)
+		{
+			sscanf($table, '%[^.].%s', $owner, $table);
+		}
+		else
+		{
+			$owner = $this->username;
+		}
+
+		$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHAR_LENGTH, DATA_PRECISION, DATA_LENGTH, DATA_DEFAULT, NULLABLE
+			FROM ALL_TAB_COLUMNS
+			WHERE UPPER(OWNER) = '.$this->escape(strtoupper($owner)).'
+				AND UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->COLUMN_NAME;
+			$retval[$i]->type		= $query[$i]->DATA_TYPE;
+
+			$length = ($query[$i]->CHAR_LENGTH > 0)
+				? $query[$i]->CHAR_LENGTH : $query[$i]->DATA_PRECISION;
+			if ($length === NULL)
+			{
+				$length = $query[$i]->DATA_LENGTH;
+			}
+			$retval[$i]->max_length		= $length;
+
+			$default = $query[$i]->DATA_DEFAULT;
+			if ($default === NULL && $query[$i]->NULLABLE === 'N')
+			{
+				$default = '';
+			}
+			$retval[$i]->default		= $query[$i]->COLUMN_DEFAULT;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return 	string
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		$keys = implode(', ', $keys);
+		$sql = "INSERT ALL\n";
+
+		for ($i = 0, $c = count($values); $i < $c; $i++)
+		{
+			$sql .= '	INTO '.$table.' ('.$keys.') VALUES '.$values[$i]."\n";
+		}
+
+		return $sql.'SELECT * FROM dual';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		if ($this->qb_limit)
+		{
+			$this->where('rownum <= ',$this->qb_limit, FALSE);
+			$this->qb_limit = FALSE;
+		}
+
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		if (version_compare($this->version(), '12.1', '>='))
+		{
+			// OFFSET-FETCH can be used only with the ORDER BY clause
+			empty($this->qb_orderby) && $sql .= ' ORDER BY 1';
+
+			return $sql.' OFFSET '.(int) $this->qb_offset.' ROWS FETCH NEXT '.$this->qb_limit.' ROWS ONLY';
+		}
+
+		return 'SELECT * FROM (SELECT inner_query.*, rownum rnum FROM ('.$sql.') inner_query WHERE rownum < '.($this->qb_offset + $this->qb_limit + 1).')'
+			.($this->qb_offset ? ' WHERE rnum >= '.($this->qb_offset + 1): '');
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_oci_forge.php b/system/database/drivers/pdo/subdrivers/pdo_oci_forge.php
new file mode 100644
index 00000000..0700d636
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_oci_forge.php
@@ -0,0 +1,207 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO Oracle Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_oci_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_database	= FALSE;
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= FALSE;
+
+	/**
+	 * DROP DATABASE statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_database	= FALSE;
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= FALSE;
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP')
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+		elseif ($alter_type === 'CHANGE')
+		{
+			$alter_type = 'MODIFY';
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				$field[$i] = "\n\t".$field[$i]['_literal'];
+			}
+			else
+			{
+				$field[$i]['_literal'] = "\n\t".$this->_process_column($field[$i]);
+
+				if ( ! empty($field[$i]['comment']))
+				{
+					$sqls[] = 'COMMENT ON COLUMN '
+						.$this->db->escape_identifiers($table).'.'.$this->db->escape_identifiers($field[$i]['name'])
+						.' IS '.$field[$i]['comment'];
+				}
+
+				if ($alter_type === 'MODIFY' && ! empty($field[$i]['new_name']))
+				{
+					$sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+						.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
+				}
+			}
+		}
+
+		$sql .= ' '.$alter_type.' ';
+		$sql .= (count($field) === 1)
+				? $field[0]
+				: '('.implode(',', $field).')';
+
+		// RENAME COLUMN must be executed after MODIFY
+		array_unshift($sqls, $sql);
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'number') !== FALSE && version_compare($this->db->version(), '12.1', '>='))
+		{
+			$field['auto_increment'] = ' GENERATED ALWAYS AS IDENTITY';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type'].$field['length']
+			.$field['unsigned']
+			.$field['default']
+			.$field['auto_increment']
+			.$field['null']
+			.$field['unique'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			case 'INT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			case 'BIGINT':
+				$attributes['TYPE'] = 'NUMBER';
+				return;
+			default: return;
+		}
+	}
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php b/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php
new file mode 100644
index 00000000..2522debe
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php
@@ -0,0 +1,229 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO ODBC Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_odbc_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'odbc';
+
+	/**
+	 * Database schema
+	 *
+	 * @var	string
+	 */
+	public $schema = 'public';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Identifier escape character
+	 *
+	 * Must be empty for ODBC.
+	 *
+	 * @var	string
+	 */
+	protected $_escape_char = '';
+
+	/**
+	 * ESCAPE statement string
+	 *
+	 * @var	string
+	 */
+	protected $_like_escape_str = " {escape '%s'} ";
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RND()', 'RND(%d)');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'odbc:';
+
+			// Pre-defined DSN
+			if (empty($this->hostname) && empty($this->HOSTNAME) && empty($this->port) && empty($this->PORT))
+			{
+				if (isset($this->DSN))
+				{
+					$this->dsn .= 'DSN='.$this->DSN;
+				}
+				elseif ( ! empty($this->database))
+				{
+					$this->dsn .= 'DSN='.$this->database;
+				}
+
+				return;
+			}
+
+			// If the DSN is not pre-configured - try to build an IBM DB2 connection string
+			$this->dsn .= 'DRIVER='.(isset($this->DRIVER) ? '{'.$this->DRIVER.'}' : '{IBM DB2 ODBC DRIVER}').';';
+
+			if (isset($this->DATABASE))
+			{
+				$this->dsn .= 'DATABASE='.$this->DATABASE.';';
+			}
+			elseif ( ! empty($this->database))
+			{
+				$this->dsn .= 'DATABASE='.$this->database.';';
+			}
+
+			if (isset($this->HOSTNAME))
+			{
+				$this->dsn .= 'HOSTNAME='.$this->HOSTNAME.';';
+			}
+			else
+			{
+				$this->dsn .= 'HOSTNAME='.(empty($this->hostname) ? '127.0.0.1;' : $this->hostname.';');
+			}
+
+			if (isset($this->PORT))
+			{
+				$this->dsn .= 'PORT='.$this->port.';';
+			}
+			elseif ( ! empty($this->port))
+			{
+				$this->dsn .= ';PORT='.$this->port.';';
+			}
+
+			$this->dsn .= 'PROTOCOL='.(isset($this->PROTOCOL) ? $this->PROTOCOL.';' : 'TCPIP;');
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		$this->display_error('db_unsupported_feature');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determines if a query is a "write" type.
+	 *
+	 * @param	string	An SQL query string
+	 * @return	bool
+	 */
+	public function is_write_type($sql)
+	{
+		if (preg_match('#^(INSERT|UPDATE).*RETURNING\s.+(\,\s?.+)*$#is', $sql))
+		{
+			return FALSE;
+		}
+
+		return parent::is_write_type($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = '".$this->schema."'";
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql." AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT column_name FROM information_schema.columns WHERE table_name = '.$this->escape($table);
+	}
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_odbc_forge.php b/system/database/drivers/pdo/subdrivers/pdo_odbc_forge.php
new file mode 100644
index 00000000..47226d7a
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_odbc_forge.php
@@ -0,0 +1,70 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO ODBC Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/database/
+ */
+class CI_DB_pdo_odbc_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		// Not supported (in most databases at least)
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php b/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
new file mode 100644
index 00000000..f6241136
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
@@ -0,0 +1,384 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO PostgreSQL Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_pgsql_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'pgsql';
+
+	/**
+	 * Database schema
+	 *
+	 * @var	string
+	 */
+	public $schema = 'public';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RANDOM()', 'RANDOM()');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'pgsql:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+			empty($this->port) OR $this->dsn .= ';port='.$this->port;
+			empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
+
+			if ( ! empty($this->username))
+			{
+				$this->dsn .= ';user='.$this->username;
+				empty($this->password) OR $this->dsn .= ';password='.$this->password;
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	object
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		$this->conn_id = parent::db_connect($persistent);
+
+		if (is_object($this->conn_id) && ! empty($this->schema))
+		{
+			$this->simple_query('SET search_path TO '.$this->schema.',public');
+		}
+
+		return $this->conn_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @param	string	$name
+	 * @return	int
+	 */
+	public function insert_id($name = NULL)
+	{
+		if ($name === NULL && version_compare($this->version(), '8.1', '>='))
+		{
+			$query = $this->query('SELECT LASTVAL() AS ins_id');
+			$query = $query->row();
+			return $query->ins_id;
+		}
+
+		return $this->conn_id->lastInsertId($name);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determines if a query is a "write" type.
+	 *
+	 * @param	string	An SQL query string
+	 * @return	bool
+	 */
+	public function is_write_type($sql)
+	{
+		if (preg_match('#^(INSERT|UPDATE).*RETURNING\s.+(\,\s?.+)*$#is', $sql))
+		{
+			return FALSE;
+		}
+
+		return parent::is_write_type($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Smart" Escape String
+	 *
+	 * Escapes data based on type
+	 *
+	 * @param	string	$str
+	 * @return	mixed
+	 */
+	public function escape($str)
+	{
+		if (is_bool($str))
+		{
+			return ($str) ? 'TRUE' : 'FALSE';
+		}
+
+		return parent::escape($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY
+	 *
+	 * @param	string	$orderby
+	 * @param	string	$direction	ASC, DESC or RANDOM
+	 * @param	bool	$escape
+	 * @return	object
+	 */
+	public function order_by($orderby, $direction = '', $escape = NULL)
+	{
+		$direction = strtoupper(trim($direction));
+		if ($direction === 'RANDOM')
+		{
+			if ( ! is_float($orderby) && ctype_digit((string) $orderby))
+			{
+				$orderby = ($orderby > 1)
+					? (float) '0.'.$orderby
+					: (float) $orderby;
+			}
+
+			if (is_float($orderby))
+			{
+				$this->simple_query('SET SEED '.$orderby);
+			}
+
+			$orderby = $this->_random_keyword[0];
+			$direction = '';
+			$escape = FALSE;
+		}
+
+		return parent::order_by($orderby, $direction, $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "table_name" FROM "information_schema"."tables" WHERE "table_schema" = \''.$this->schema."'";
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			return $sql.' AND "table_name" LIKE \''
+				.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT "column_name"
+			FROM "information_schema"."columns"
+			WHERE "table_schema" = \''.$this->schema.'\' AND LOWER("table_name") = '.$this->escape(strtolower($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "column_name", "data_type", "character_maximum_length", "numeric_precision", "column_default"
+			FROM "information_schema"."columns"
+			WHERE "table_schema" = \''.$this->schema.'\' AND LOWER("table_name") = '.$this->escape(strtolower($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->column_name;
+			$retval[$i]->type		= $query[$i]->data_type;
+			$retval[$i]->max_length		= ($query[$i]->character_maximum_length > 0) ? $query[$i]->character_maximum_length : $query[$i]->numeric_precision;
+			$retval[$i]->default		= $query[$i]->column_default;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update_Batch statement
+	 *
+	 * Generates a platform-specific batch update string from the supplied data
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$values	Update data
+	 * @param	string	$index	WHERE key
+	 * @return	string
+	 */
+	protected function _update_batch($table, $values, $index)
+	{
+		$ids = array();
+		foreach ($values as $key => $val)
+		{
+			$ids[] = $val[$index]['value'];
+
+			foreach (array_keys($val) as $field)
+			{
+				if ($field !== $index)
+				{
+					$final[$val[$field]['field']][] = 'WHEN '.$val[$index]['value'].' THEN '.$val[$field]['value'];
+				}
+			}
+		}
+
+		$cases = '';
+		foreach ($final as $k => $v)
+		{
+			$cases .= $k.' = (CASE '.$val[$index]['field']."\n"
+				.implode("\n", $v)."\n"
+				.'ELSE '.$k.' END), ';
+		}
+
+		$this->where($val[$index]['field'].' IN('.implode(',', $ids).')', NULL, FALSE);
+
+		return 'UPDATE '.$table.' SET '.substr($cases, 0, -2).$this->_compile_wh('qb_where');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		return $sql.' LIMIT '.$this->qb_limit.($this->qb_offset ? ' OFFSET '.$this->qb_offset : '');
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php b/system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php
new file mode 100644
index 00000000..187cb2d0
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php
@@ -0,0 +1,210 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO PostgreSQL Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_pgsql_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'INT2'		=> 'INTEGER',
+		'SMALLINT'	=> 'INTEGER',
+		'INT'		=> 'BIGINT',
+		'INT4'		=> 'BIGINT',
+		'INTEGER'	=> 'BIGINT',
+		'INT8'		=> 'NUMERIC',
+		'BIGINT'	=> 'NUMERIC',
+		'REAL'		=> 'DOUBLE PRECISION',
+		'FLOAT'		=> 'DOUBLE PRECISION'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null = 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$db	Database object
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		parent::__construct($db);
+
+		if (version_compare($this->db->version(), '9.0', '>'))
+		{
+			$this->create_table_if = 'CREATE TABLE IF NOT EXISTS';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				return FALSE;
+			}
+
+			if (version_compare($this->db->version(), '8', '>=') && isset($field[$i]['type']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TYPE '.$field[$i]['type'].$field[$i]['length'];
+			}
+
+			if ( ! empty($field[$i]['default']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' SET '.$field[$i]['default'];
+			}
+
+			if (isset($field[$i]['null']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.(trim($field[$i]['null']) === $this->_null ? ' DROP NOT NULL' : ' SET NOT NULL');
+			}
+
+			if ( ! empty($field[$i]['new_name']))
+			{
+				$sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
+			}
+
+			if ( ! empty($field[$i]['comment']))
+			{
+				$sqls[] = 'COMMENT ON COLUMN '
+					.$this->db->escape_identifiers($table).'.'.$this->db->escape_identifiers($field[$i]['name'])
+					.' IS '.$field[$i]['comment'];
+			}
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		// Reset field lengths for data types that don't support it
+		if (isset($attributes['CONSTRAINT']) && stripos($attributes['TYPE'], 'int') !== FALSE)
+		{
+			$attributes['CONSTRAINT'] = NULL;
+		}
+
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE)
+		{
+			$field['type'] = ($field['type'] === 'NUMERIC')
+				? 'BIGSERIAL'
+				: 'SERIAL';
+		}
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_sqlite_driver.php b/system/database/drivers/pdo/subdrivers/pdo_sqlite_driver.php
new file mode 100644
index 00000000..634b837c
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_sqlite_driver.php
@@ -0,0 +1,213 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO SQLite Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_sqlite_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'sqlite';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RANDOM()', 'RANDOM()');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'sqlite:';
+
+			if (empty($this->database) && empty($this->hostname))
+			{
+				$this->database = ':memory:';
+			}
+
+			$this->database = empty($this->database) ? $this->hostname : $this->database;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "NAME" FROM "SQLITE_MASTER" WHERE "TYPE" = \'table\'';
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			return $sql.' AND "NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * @param	string	$table	Table name
+	 * @return	array
+	 */
+	public function list_fields($table)
+	{
+		if (($result = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$fields = array();
+		foreach ($result->result_array() as $row)
+		{
+			$fields[] = $row['name'];
+		}
+
+		return $fields;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$query = $query->result_array();
+		if (empty($query))
+		{
+			return FALSE;
+		}
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]['name'];
+			$retval[$i]->type		= $query[$i]['type'];
+			$retval[$i]->max_length		= NULL;
+			$retval[$i]->default		= $query[$i]['dflt_value'];
+			$retval[$i]->primary_key	= isset($query[$i]['pk']) ? (int) $query[$i]['pk'] : 0;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Replace statement
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return 	string
+	 */
+	protected function _replace($table, $keys, $values)
+	{
+		return 'INSERT OR '.parent::_replace($table, $keys, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'DELETE FROM '.$table;
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_sqlite_forge.php b/system/database/drivers/pdo/subdrivers/pdo_sqlite_forge.php
new file mode 100644
index 00000000..fd9696fb
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_sqlite_forge.php
@@ -0,0 +1,238 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO SQLite Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_sqlite_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= 'CREATE TABLE IF NOT EXISTS';
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= FALSE;
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$db	Database object
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		parent::__construct($db);
+
+		if (version_compare($this->db->version(), '3.3', '<'))
+		{
+			$this->_create_table_if = FALSE;
+			$this->_drop_table_if   = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create database
+	 *
+	 * @param	string	$db_name	(ignored)
+	 * @return	bool
+	 */
+	public function create_database($db_name)
+	{
+		// In SQLite, a database is created when you connect to the database.
+		// We'll return TRUE so that an error isn't generated
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @param	string	$db_name	(ignored)
+	 * @return	bool
+	 */
+	public function drop_database($db_name)
+	{
+		// In SQLite, a database is dropped when we delete a file
+		if (file_exists($this->db->database))
+		{
+			// We need to close the pseudo-connection first
+			$this->db->close();
+			if ( ! @unlink($this->db->database))
+			{
+				return $this->db->db_debug ? $this->db->display_error('db_unable_to_drop') : FALSE;
+			}
+			elseif ( ! empty($this->db->data_cache['db_names']))
+			{
+				$key = array_search(strtolower($this->db->database), array_map('strtolower', $this->db->data_cache['db_names']), TRUE);
+				if ($key !== FALSE)
+				{
+					unset($this->db->data_cache['db_names'][$key]);
+				}
+			}
+
+			return TRUE;
+		}
+
+		return $this->db->db_debug ? $this->db->display_error('db_unable_to_drop') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP' OR $alter_type === 'CHANGE')
+		{
+			// drop_column():
+			//	BEGIN TRANSACTION;
+			//	CREATE TEMPORARY TABLE t1_backup(a,b);
+			//	INSERT INTO t1_backup SELECT a,b FROM t1;
+			//	DROP TABLE t1;
+			//	CREATE TABLE t1(a,b);
+			//	INSERT INTO t1 SELECT a,b FROM t1_backup;
+			//	DROP TABLE t1_backup;
+			//	COMMIT;
+
+			return FALSE;
+		}
+
+		return parent::_alter_table($alter_type, $table, $field);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type']
+			.$field['auto_increment']
+			.$field['null']
+			.$field['unique']
+			.$field['default'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'ENUM':
+			case 'SET':
+				$attributes['TYPE'] = 'TEXT';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['type'] = 'INTEGER PRIMARY KEY';
+			$field['default'] = '';
+			$field['null'] = '';
+			$field['unique'] = '';
+			$field['auto_increment'] = ' AUTOINCREMENT';
+
+			$this->primary_keys = array();
+		}
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php b/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php
new file mode 100644
index 00000000..1c83593d
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php
@@ -0,0 +1,369 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO SQLSRV Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_sqlsrv_driver extends CI_DB_pdo_driver {
+
+	/**
+	 * Sub-driver
+	 *
+	 * @var	string
+	 */
+	public $subdriver = 'sqlsrv';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('NEWID()', 'RAND(%d)');
+
+	/**
+	 * Quoted identifier flag
+	 *
+	 * Whether to use SQL-92 standard quoted identifier
+	 * (double quotes) or brackets for identifier escaping.
+	 *
+	 * @var	bool
+	 */
+	protected $_quoted_identifier;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Builds the DSN if not already set.
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->dsn))
+		{
+			$this->dsn = 'sqlsrv:Server='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+			empty($this->port) OR $this->dsn .= ','.$this->port;
+			empty($this->database) OR $this->dsn .= ';Database='.$this->database;
+
+			// Some custom options
+
+			if (isset($this->QuotedId))
+			{
+				$this->dsn .= ';QuotedId='.$this->QuotedId;
+				$this->_quoted_identifier = (bool) $this->QuotedId;
+			}
+
+			if (isset($this->ConnectionPooling))
+			{
+				$this->dsn .= ';ConnectionPooling='.$this->ConnectionPooling;
+			}
+
+			if ($this->encrypt === TRUE)
+			{
+				$this->dsn .= ';Encrypt=1';
+			}
+
+			if (isset($this->TraceOn))
+			{
+				$this->dsn .= ';TraceOn='.$this->TraceOn;
+			}
+
+			if (isset($this->TrustServerCertificate))
+			{
+				$this->dsn .= ';TrustServerCertificate='.$this->TrustServerCertificate;
+			}
+
+			empty($this->APP) OR $this->dsn .= ';APP='.$this->APP;
+			empty($this->Failover_Partner) OR $this->dsn .= ';Failover_Partner='.$this->Failover_Partner;
+			empty($this->LoginTimeout) OR $this->dsn .= ';LoginTimeout='.$this->LoginTimeout;
+			empty($this->MultipleActiveResultSets) OR $this->dsn .= ';MultipleActiveResultSets='.$this->MultipleActiveResultSets;
+			empty($this->TraceFile) OR $this->dsn .= ';TraceFile='.$this->TraceFile;
+			empty($this->WSID) OR $this->dsn .= ';WSID='.$this->WSID;
+		}
+		elseif (preg_match('/QuotedId=(0|1)/', $this->dsn, $match))
+		{
+			$this->_quoted_identifier = (bool) $match[1];
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	object
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		if ( ! empty($this->char_set) && preg_match('/utf[^8]*8/i', $this->char_set))
+		{
+			$this->options[PDO::SQLSRV_ENCODING_UTF8] = 1;
+		}
+
+		$this->conn_id = parent::db_connect($persistent);
+
+		if ( ! is_object($this->conn_id) OR is_bool($this->_quoted_identifier))
+		{
+			return $this->conn_id;
+		}
+
+		// Determine how identifiers are escaped
+		$query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
+		$query = $query->row_array();
+		$this->_quoted_identifier = empty($query) ? FALSE : (bool) $query['qi'];
+		$this->_escape_char = ($this->_quoted_identifier) ? '"' : array('[', ']');
+
+		return $this->conn_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT '.$this->escape_identifiers('name')
+			.' FROM '.$this->escape_identifiers('sysobjects')
+			.' WHERE '.$this->escape_identifiers('type')." = 'U'";
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			$sql .= ' AND '.$this->escape_identifiers('name')." LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql.' ORDER BY '.$this->escape_identifiers('name');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT COLUMN_NAME
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, COLUMN_DEFAULT
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->COLUMN_NAME;
+			$retval[$i]->type		= $query[$i]->DATA_TYPE;
+			$retval[$i]->max_length		= ($query[$i]->CHARACTER_MAXIMUM_LENGTH > 0) ? $query[$i]->CHARACTER_MAXIMUM_LENGTH : $query[$i]->NUMERIC_PRECISION;
+			$retval[$i]->default		= $query[$i]->COLUMN_DEFAULT;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		if ($this->qb_limit)
+		{
+			return 'WITH ci_delete AS (SELECT TOP '.$this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
+		}
+
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		// As of SQL Server 2012 (11.0.*) OFFSET is supported
+		if (version_compare($this->version(), '11', '>='))
+		{
+			// SQL Server OFFSET-FETCH can be used only with the ORDER BY clause
+			empty($this->qb_orderby) && $sql .= ' ORDER BY 1';
+
+			return $sql.' OFFSET '.(int) $this->qb_offset.' ROWS FETCH NEXT '.$this->qb_limit.' ROWS ONLY';
+		}
+
+		$limit = $this->qb_offset + $this->qb_limit;
+
+		// An ORDER BY clause is required for ROW_NUMBER() to work
+		if ($this->qb_offset && ! empty($this->qb_orderby))
+		{
+			$orderby = $this->_compile_order_by();
+
+			// We have to strip the ORDER BY clause
+			$sql = trim(substr($sql, 0, strrpos($sql, $orderby)));
+
+			// Get the fields to select from our subquery, so that we can avoid CI_rownum appearing in the actual results
+			if (count($this->qb_select) === 0 OR strpos(implode(',', $this->qb_select), '*') !== FALSE)
+			{
+				$select = '*'; // Inevitable
+			}
+			else
+			{
+				// Use only field names and their aliases, everything else is out of our scope.
+				$select = array();
+				$field_regexp = ($this->_quoted_identifier)
+					? '("[^\"]+")' : '(\[[^\]]+\])';
+				for ($i = 0, $c = count($this->qb_select); $i < $c; $i++)
+				{
+					$select[] = preg_match('/(?:\s|\.)'.$field_regexp.'$/i', $this->qb_select[$i], $m)
+						? $m[1] : $this->qb_select[$i];
+				}
+				$select = implode(', ', $select);
+			}
+
+			return 'SELECT '.$select." FROM (\n\n"
+				.preg_replace('/^(SELECT( DISTINCT)?)/i', '\\1 ROW_NUMBER() OVER('.trim($orderby).') AS '.$this->escape_identifiers('CI_rownum').', ', $sql)
+				."\n\n) ".$this->escape_identifiers('CI_subquery')
+				."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.($this->qb_offset + 1).' AND '.$limit;
+		}
+
+		return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		// Multiple-value inserts are only supported as of SQL Server 2008
+		if (version_compare($this->version(), '10', '>='))
+		{
+			return parent::_insert_batch($table, $keys, $values);
+		}
+
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_forge.php b/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_forge.php
new file mode 100644
index 00000000..22375949
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_forge.php
@@ -0,0 +1,149 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * PDO SQLSRV Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_pdo_sqlsrv_forge extends CI_DB_pdo_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= "IF NOT EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nCREATE TABLE";
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= "IF EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nDROP TABLE";
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT'	=> 'SMALLINT',
+		'SMALLINT'	=> 'INT',
+		'INT'		=> 'BIGINT',
+		'REAL'		=> 'FLOAT'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('ADD', 'DROP'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table).' ALTER COLUMN ';
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			$sqls[] = $sql.$this->_process_column($field[$i]);
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		if (isset($attributes['CONSTRAINT']) && strpos($attributes['TYPE'], 'INT') !== FALSE)
+		{
+			unset($attributes['CONSTRAINT']);
+		}
+
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INTEGER':
+				$attributes['TYPE'] = 'INT';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['auto_increment'] = ' IDENTITY(1,1)';
+		}
+	}
+
+}
diff --git a/system/database/drivers/postgre/index.html b/system/database/drivers/postgre/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/postgre/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
new file mode 100644
index 00000000..af636e3f
--- /dev/null
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -0,0 +1,604 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Postgre Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_postgre_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'postgre';
+
+	/**
+	 * Database schema
+	 *
+	 * @var	string
+	 */
+	public $schema = 'public';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RANDOM()', 'RANDOM()');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Build DSN
+	 *
+	 * @return	void
+	 */
+	protected function _build_dsn()
+	{
+		$this->dsn === '' OR $this->dsn = '';
+
+		if (strpos($this->hostname, '/') !== FALSE)
+		{
+			// If UNIX sockets are used, we shouldn't set a port
+			$this->port = '';
+		}
+
+		$this->hostname === '' OR $this->dsn = 'host='.$this->hostname.' ';
+
+		if ( ! empty($this->port) && ctype_digit($this->port))
+		{
+			$this->dsn .= 'port='.$this->port.' ';
+		}
+
+		if ($this->username !== '')
+		{
+			$this->dsn .= 'user='.$this->username.' ';
+
+			/* An empty password is valid!
+			 *
+			 * $db['password'] = NULL must be done in order to ignore it.
+			 */
+			$this->password === NULL OR $this->dsn .= "password='".$this->password."' ";
+		}
+
+		$this->database === '' OR $this->dsn .= 'dbname='.$this->database.' ';
+
+		/* We don't have these options as elements in our standard configuration
+		 * array, but they might be set by parse_url() if the configuration was
+		 * provided via string. Example:
+		 *
+		 * postgre://username:password@localhost:5432/database?connect_timeout=5&sslmode=1
+		 */
+		foreach (array('connect_timeout', 'options', 'sslmode', 'service') as $key)
+		{
+			if (isset($this->$key) && is_string($this->$key) && $this->$key !== '')
+			{
+				$this->dsn .= $key."='".$this->$key."' ";
+			}
+		}
+
+		$this->dsn = rtrim($this->dsn);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	resource
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		empty($this->dsn) && $this->_build_dsn();
+		$this->conn_id = ($persistent === TRUE)
+			? pg_pconnect($this->dsn)
+			: pg_connect($this->dsn);
+
+		if ($this->conn_id !== FALSE)
+		{
+			if ($persistent === TRUE
+				&& pg_connection_status($this->conn_id) === PGSQL_CONNECTION_BAD
+				&& pg_ping($this->conn_id) === FALSE
+			)
+			{
+				return FALSE;
+			}
+
+			if (pg_set_client_encoding($this->conn_id, $this->char_set) !== 0)
+			{
+				log_message('error', "Database: Unable to set the configured connection charset ('{$this->char_set}').");
+				pg_close($this->conn_id);
+				return ($this->db->db_debug) ? $this->display_error('db_unable_to_set_charset', $this->char_set) : FALSE;
+			}
+
+			empty($this->schema) OR $this->simple_query('SET search_path TO '.$this->schema.',public');
+		}
+
+		return $this->conn_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout
+	 *
+	 * @return	void
+	 */
+	public function reconnect()
+	{
+		if (pg_ping($this->conn_id) === FALSE)
+		{
+			$this->conn_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if ( ! $this->conn_id OR ($pg_version = pg_version($this->conn_id)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		/* If PHP was compiled with PostgreSQL lib versions earlier
+		 * than 7.4, pg_version() won't return the server version
+		 * and so we'll have to fall back to running a query in
+		 * order to get it.
+		 */
+		return (isset($pg_version['server']) && preg_match('#^(\d+\.\d+)#', $pg_version['server'], $match))
+			? $this->data_cache['version'] = $match[1]
+			: parent::version();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		return pg_query($this->conn_id, $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		return (bool) pg_query($this->conn_id, 'BEGIN');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		return (bool) pg_query($this->conn_id, 'COMMIT');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		return (bool) pg_query($this->conn_id, 'ROLLBACK');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Determines if a query is a "write" type.
+	 *
+	 * @param	string	An SQL query string
+	 * @return	bool
+	 */
+	public function is_write_type($sql)
+	{
+		if (preg_match('#^(INSERT|UPDATE).*RETURNING\s.+(\,\s?.+)*$#is', $sql))
+		{
+			return FALSE;
+		}
+
+		return parent::is_write_type($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		return pg_escape_string($this->conn_id, $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Smart" Escape String
+	 *
+	 * Escapes data based on type
+	 *
+	 * @param	string	$str
+	 * @return	mixed
+	 */
+	public function escape($str)
+	{
+		if (is_string($str) OR (is_object($str) && method_exists($str, '__toString')))
+		{
+			return pg_escape_literal($this->conn_id, $str);
+		}
+		elseif (is_bool($str))
+		{
+			return ($str) ? 'TRUE' : 'FALSE';
+		}
+
+		return parent::escape($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return pg_affected_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	string
+	 */
+	public function insert_id()
+	{
+		$v = $this->version();
+
+		$table	= (func_num_args() > 0) ? func_get_arg(0) : NULL;
+		$column	= (func_num_args() > 1) ? func_get_arg(1) : NULL;
+
+		if ($table === NULL && $v >= '8.1')
+		{
+			$sql = 'SELECT LASTVAL() AS ins_id';
+		}
+		elseif ($table !== NULL)
+		{
+			if ($column !== NULL && $v >= '8.0')
+			{
+				$sql = 'SELECT pg_get_serial_sequence(\''.$table."', '".$column."') AS seq";
+				$query = $this->query($sql);
+				$query = $query->row();
+				$seq = $query->seq;
+			}
+			else
+			{
+				// seq_name passed in table parameter
+				$seq = $table;
+			}
+
+			$sql = 'SELECT CURRVAL(\''.$seq."') AS ins_id";
+		}
+		else
+		{
+			return pg_last_oid($this->result_id);
+		}
+
+		$query = $this->query($sql);
+		$query = $query->row();
+		return (int) $query->ins_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT "table_name" FROM "information_schema"."tables" WHERE "table_schema" = \''.$this->schema."'";
+
+		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+		{
+			return $sql.' AND "table_name" LIKE \''
+				.$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_like_escape_str, $this->_like_escape_chr);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT "column_name"
+			FROM "information_schema"."columns"
+			WHERE "table_schema" = \''.$this->schema.'\' AND LOWER("table_name") = '.$this->escape(strtolower($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT "column_name", "data_type", "character_maximum_length", "numeric_precision", "column_default"
+			FROM "information_schema"."columns"
+			WHERE "table_schema" = \''.$this->schema.'\' AND LOWER("table_name") = '.$this->escape(strtolower($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->column_name;
+			$retval[$i]->type		= $query[$i]->data_type;
+			$retval[$i]->max_length		= ($query[$i]->character_maximum_length > 0) ? $query[$i]->character_maximum_length : $query[$i]->numeric_precision;
+			$retval[$i]->default		= $query[$i]->column_default;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => '', 'message' => pg_last_error($this->conn_id));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY
+	 *
+	 * @param	string	$orderby
+	 * @param	string	$direction	ASC, DESC or RANDOM
+	 * @param	bool	$escape
+	 * @return	object
+	 */
+	public function order_by($orderby, $direction = '', $escape = NULL)
+	{
+		$direction = strtoupper(trim($direction));
+		if ($direction === 'RANDOM')
+		{
+			if ( ! is_float($orderby) && ctype_digit((string) $orderby))
+			{
+				$orderby = ($orderby > 1)
+					? (float) '0.'.$orderby
+					: (float) $orderby;
+			}
+
+			if (is_float($orderby))
+			{
+				$this->simple_query('SET SEED '.$orderby);
+			}
+
+			$orderby = $this->_random_keyword[0];
+			$direction = '';
+			$escape = FALSE;
+		}
+
+		return parent::order_by($orderby, $direction, $escape);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update_Batch statement
+	 *
+	 * Generates a platform-specific batch update string from the supplied data
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$values	Update data
+	 * @param	string	$index	WHERE key
+	 * @return	string
+	 */
+	protected function _update_batch($table, $values, $index)
+	{
+		$ids = array();
+		foreach ($values as $key => $val)
+		{
+			$ids[] = $val[$index]['value'];
+
+			foreach (array_keys($val) as $field)
+			{
+				if ($field !== $index)
+				{
+					$final[$val[$field]['field']][] = 'WHEN '.$val[$index]['value'].' THEN '.$val[$field]['value'];
+				}
+			}
+		}
+
+		$cases = '';
+		foreach ($final as $k => $v)
+		{
+			$cases .= $k.' = (CASE '.$val[$index]['field']."\n"
+				.implode("\n", $v)."\n"
+				.'ELSE '.$k.' END), ';
+		}
+
+		$this->where($val[$index]['field'].' IN('.implode(',', $ids).')', NULL, FALSE);
+
+		return 'UPDATE '.$table.' SET '.substr($cases, 0, -2).$this->_compile_wh('qb_where');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		$this->qb_limit = FALSE;
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		return $sql.' LIMIT '.$this->qb_limit.($this->qb_offset ? ' OFFSET '.$this->qb_offset : '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		pg_close($this->conn_id);
+	}
+
+}
diff --git a/system/database/drivers/postgre/postgre_forge.php b/system/database/drivers/postgre/postgre_forge.php
new file mode 100644
index 00000000..6f214c66
--- /dev/null
+++ b/system/database/drivers/postgre/postgre_forge.php
@@ -0,0 +1,205 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Postgre Forge Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_postgre_forge extends CI_DB_forge {
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'INT2'		=> 'INTEGER',
+		'SMALLINT'	=> 'INTEGER',
+		'INT'		=> 'BIGINT',
+		'INT4'		=> 'BIGINT',
+		'INTEGER'	=> 'BIGINT',
+		'INT8'		=> 'NUMERIC',
+		'BIGINT'	=> 'NUMERIC',
+		'REAL'		=> 'DOUBLE PRECISION',
+		'FLOAT'		=> 'DOUBLE PRECISION'
+	);
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null = 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$db	Database object
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		parent::__construct($db);
+
+		if (version_compare($this->db->version(), '9.0', '>'))
+		{
+			$this->create_table_if = 'CREATE TABLE IF NOT EXISTS';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			if ($field[$i]['_literal'] !== FALSE)
+			{
+				return FALSE;
+			}
+
+			if (version_compare($this->db->version(), '8', '>=') && isset($field[$i]['type']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TYPE '.$field[$i]['type'].$field[$i]['length'];
+			}
+
+			if ( ! empty($field[$i]['default']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' SET '.$field[$i]['default'];
+			}
+
+			if (isset($field[$i]['null']))
+			{
+				$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.(trim($field[$i]['null']) === $this->_null ? ' DROP NOT NULL' : ' SET NOT NULL');
+			}
+
+			if ( ! empty($field[$i]['new_name']))
+			{
+				$sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
+					.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
+			}
+
+			if ( ! empty($field[$i]['comment']))
+			{
+				$sqls[] = 'COMMENT ON COLUMN '
+					.$this->db->escape_identifiers($table).'.'.$this->db->escape_identifiers($field[$i]['name'])
+					.' IS '.$field[$i]['comment'];
+			}
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		// Reset field lengths for data types that don't support it
+		if (isset($attributes['CONSTRAINT']) && stripos($attributes['TYPE'], 'int') !== FALSE)
+		{
+			$attributes['CONSTRAINT'] = NULL;
+		}
+
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'TINYINT':
+				$attributes['TYPE'] = 'SMALLINT';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE)
+		{
+			$field['type'] = ($field['type'] === 'NUMERIC')
+				? 'BIGSERIAL'
+				: 'SERIAL';
+		}
+	}
+
+}
diff --git a/system/database/drivers/postgre/postgre_result.php b/system/database/drivers/postgre/postgre_result.php
new file mode 100644
index 00000000..a0a628f0
--- /dev/null
+++ b/system/database/drivers/postgre/postgre_result.php
@@ -0,0 +1,182 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Postgres Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_postgre_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		return is_int($this->num_rows)
+			? $this->num_rows
+			: $this->num_rows = pg_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return pg_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$field_names[] = pg_field_name($this->result_id, $i);
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= pg_field_name($this->result_id, $i);
+			$retval[$i]->type		= pg_field_type($this->result_id, $i);
+			$retval[$i]->max_length		= pg_field_size($this->result_id, $i);
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id))
+		{
+			pg_free_result($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * @param	int	$n
+	 * @return	bool
+	 */
+	public function data_seek($n = 0)
+	{
+		return pg_result_seek($this->result_id, $n);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return pg_fetch_assoc($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return pg_fetch_object($this->result_id, NULL, $class_name);
+	}
+
+}
diff --git a/system/database/drivers/postgre/postgre_utility.php b/system/database/drivers/postgre/postgre_utility.php
new file mode 100644
index 00000000..e6e7b28b
--- /dev/null
+++ b/system/database/drivers/postgre/postgre_utility.php
@@ -0,0 +1,78 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Postgre Utility Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_postgre_utility extends CI_DB_utility {
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases	= 'SELECT datname FROM pg_database';
+
+	/**
+	 * OPTIMIZE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_optimize_table	= 'REINDEX TABLE %s';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+}
diff --git a/system/database/drivers/sqlite3/index.html b/system/database/drivers/sqlite3/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/sqlite3/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/sqlite3/sqlite3_driver.php b/system/database/drivers/sqlite3/sqlite3_driver.php
new file mode 100644
index 00000000..d456250f
--- /dev/null
+++ b/system/database/drivers/sqlite3/sqlite3_driver.php
@@ -0,0 +1,344 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLite3 Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlite3_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'sqlite3';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('RANDOM()', 'RANDOM()');
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @param	bool	$persistent
+	 * @return	SQLite3
+	 */
+	public function db_connect($persistent = FALSE)
+	{
+		if ($persistent)
+		{
+			log_message('debug', 'SQLite3 doesn\'t support persistent connections');
+		}
+
+		try
+		{
+			return ( ! $this->password)
+				? new SQLite3($this->database)
+				: new SQLite3($this->database, SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE, $this->password);
+		}
+		catch (Exception $e)
+		{
+			return FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		$version = SQLite3::version();
+		return $this->data_cache['version'] = $version['versionString'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @todo	Implement use of SQLite3::querySingle(), if needed
+	 * @param	string	$sql
+	 * @return	mixed	SQLite3Result object or bool
+	 */
+	protected function _execute($sql)
+	{
+		return $this->is_write_type($sql)
+			? $this->conn_id->exec($sql)
+			: $this->conn_id->query($sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		return $this->conn_id->exec('BEGIN TRANSACTION');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		return $this->conn_id->exec('END TRANSACTION');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		return $this->conn_id->exec('ROLLBACK');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Platform-dependent string escape
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _escape_str($str)
+	{
+		return $this->conn_id->escapeString($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return $this->conn_id->changes();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @return	int
+	 */
+	public function insert_id()
+	{
+		return $this->conn_id->lastInsertRowID();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool	$prefix_limit
+	 * @return	string
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		return 'SELECT "NAME" FROM "SQLITE_MASTER" WHERE "TYPE" = \'table\''
+			.(($prefix_limit !== FALSE && $this->dbprefix != '')
+				? ' AND "NAME" LIKE \''.$this->escape_like_str($this->dbprefix).'%\' '.sprintf($this->_like_escape_str, $this->_like_escape_chr)
+				: '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * @param	string	$table	Table name
+	 * @return	array
+	 */
+	public function list_fields($table)
+	{
+		if (($result = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$fields = array();
+		foreach ($result->result_array() as $row)
+		{
+			$fields[] = $row['name'];
+		}
+
+		return $fields;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		if (($query = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$query = $query->result_array();
+		if (empty($query))
+		{
+			return FALSE;
+		}
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]['name'];
+			$retval[$i]->type		= $query[$i]['type'];
+			$retval[$i]->max_length		= NULL;
+			$retval[$i]->default		= $query[$i]['dflt_value'];
+			$retval[$i]->primary_key	= isset($query[$i]['pk']) ? (int) $query[$i]['pk'] : 0;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		return array('code' => $this->conn_id->lastErrorCode(), 'message' => $this->conn_id->lastErrorMsg());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Replace statement
+	 *
+	 * Generates a platform-specific replace string from the supplied data
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string
+	 */
+	protected function _replace($table, $keys, $values)
+	{
+		return 'INSERT OR '.parent::_replace($table, $keys, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'DELETE FROM '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		$this->conn_id->close();
+	}
+
+}
diff --git a/system/database/drivers/sqlite3/sqlite3_forge.php b/system/database/drivers/sqlite3/sqlite3_forge.php
new file mode 100644
index 00000000..52894e85
--- /dev/null
+++ b/system/database/drivers/sqlite3/sqlite3_forge.php
@@ -0,0 +1,225 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLite3 Forge Class
+ *
+ * @category	Database
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlite3_forge extends CI_DB_forge {
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	bool|array
+	 */
+	protected $_unsigned		= FALSE;
+
+	/**
+	 * NULL value representation in CREATE/ALTER TABLE statements
+	 *
+	 * @var	string
+	 */
+	protected $_null		= 'NULL';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	object	&$db	Database object
+	 * @return	void
+	 */
+	public function __construct(&$db)
+	{
+		parent::__construct($db);
+
+		if (version_compare($this->db->version(), '3.3', '<'))
+		{
+			$this->_create_table_if = FALSE;
+			$this->_drop_table_if   = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create database
+	 *
+	 * @param	string	$db_name
+	 * @return	bool
+	 */
+	public function create_database($db_name)
+	{
+		// In SQLite, a database is created when you connect to the database.
+		// We'll return TRUE so that an error isn't generated
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @param	string	$db_name	(ignored)
+	 * @return	bool
+	 */
+	public function drop_database($db_name)
+	{
+		// In SQLite, a database is dropped when we delete a file
+		if (file_exists($this->db->database))
+		{
+			// We need to close the pseudo-connection first
+			$this->db->close();
+			if ( ! @unlink($this->db->database))
+			{
+				return $this->db->db_debug ? $this->db->display_error('db_unable_to_drop') : FALSE;
+			}
+			elseif ( ! empty($this->db->data_cache['db_names']))
+			{
+				$key = array_search(strtolower($this->db->database), array_map('strtolower', $this->db->data_cache['db_names']), TRUE);
+				if ($key !== FALSE)
+				{
+					unset($this->db->data_cache['db_names'][$key]);
+				}
+			}
+
+			return TRUE;
+		}
+
+		return $this->db->db_debug ? $this->db->display_error('db_unable_to_drop') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @todo	implement drop_column(), modify_column()
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if ($alter_type === 'DROP' OR $alter_type === 'CHANGE')
+		{
+			// drop_column():
+			//	BEGIN TRANSACTION;
+			//	CREATE TEMPORARY TABLE t1_backup(a,b);
+			//	INSERT INTO t1_backup SELECT a,b FROM t1;
+			//	DROP TABLE t1;
+			//	CREATE TABLE t1(a,b);
+			//	INSERT INTO t1 SELECT a,b FROM t1_backup;
+			//	DROP TABLE t1_backup;
+			//	COMMIT;
+
+			return FALSE;
+		}
+
+		return parent::_alter_table($alter_type, $table, $field);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process column
+	 *
+	 * @param	array	$field
+	 * @return	string
+	 */
+	protected function _process_column($field)
+	{
+		return $this->db->escape_identifiers($field['name'])
+			.' '.$field['type']
+			.$field['auto_increment']
+			.$field['null']
+			.$field['unique']
+			.$field['default'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'ENUM':
+			case 'SET':
+				$attributes['TYPE'] = 'TEXT';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['type'] = 'INTEGER PRIMARY KEY';
+			$field['default'] = '';
+			$field['null'] = '';
+			$field['unique'] = '';
+			$field['auto_increment'] = ' AUTOINCREMENT';
+
+			$this->primary_keys = array();
+		}
+	}
+
+}
diff --git a/system/database/drivers/sqlite3/sqlite3_result.php b/system/database/drivers/sqlite3/sqlite3_result.php
new file mode 100644
index 00000000..a48cbcf5
--- /dev/null
+++ b/system/database/drivers/sqlite3/sqlite3_result.php
@@ -0,0 +1,194 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLite3 Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlite3_result extends CI_DB_result {
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return $this->result_id->numColumns();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$field_names[] = $this->result_id->columnName($i);
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		static $data_types = array(
+			SQLITE3_INTEGER	=> 'integer',
+			SQLITE3_FLOAT	=> 'float',
+			SQLITE3_TEXT	=> 'text',
+			SQLITE3_BLOB	=> 'blob',
+			SQLITE3_NULL	=> 'null'
+		);
+
+		$retval = array();
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $this->result_id->columnName($i);
+
+			$type = $this->result_id->columnType($i);
+			$retval[$i]->type		= isset($data_types[$type]) ? $data_types[$type] : $type;
+
+			$retval[$i]->max_length		= NULL;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_object($this->result_id))
+		{
+			$this->result_id->finalize();
+			$this->result_id = NULL;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return $this->result_id->fetchArray(SQLITE3_ASSOC);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		// No native support for fetching rows as objects
+		if (($row = $this->result_id->fetchArray(SQLITE3_ASSOC)) === FALSE)
+		{
+			return FALSE;
+		}
+		elseif ($class_name === 'stdClass')
+		{
+			return (object) $row;
+		}
+
+		$class_name = new $class_name();
+		foreach (array_keys($row) as $key)
+		{
+			$class_name->$key = $row[$key];
+		}
+
+		return $class_name;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero.
+	 *
+	 * @param	int	$n	(ignored)
+	 * @return	array
+	 */
+	public function data_seek($n = 0)
+	{
+		// Only resetting to the start of the result set is supported
+		return ($n > 0) ? FALSE : $this->result_id->reset();
+	}
+
+}
diff --git a/system/database/drivers/sqlite3/sqlite3_utility.php b/system/database/drivers/sqlite3/sqlite3_utility.php
new file mode 100644
index 00000000..c80dd4f9
--- /dev/null
+++ b/system/database/drivers/sqlite3/sqlite3_utility.php
@@ -0,0 +1,61 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLite3 Utility Class
+ *
+ * @category	Database
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlite3_utility extends CI_DB_utility {
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	mixed
+	 */
+	protected function _backup($params = array())
+	{
+		// Not supported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+
+}
diff --git a/system/database/drivers/sqlsrv/index.html b/system/database/drivers/sqlsrv/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/drivers/sqlsrv/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/database/drivers/sqlsrv/sqlsrv_driver.php b/system/database/drivers/sqlsrv/sqlsrv_driver.php
new file mode 100644
index 00000000..33f971ff
--- /dev/null
+++ b/system/database/drivers/sqlsrv/sqlsrv_driver.php
@@ -0,0 +1,543 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.3
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLSRV Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlsrv_driver extends CI_DB {
+
+	/**
+	 * Database driver
+	 *
+	 * @var	string
+	 */
+	public $dbdriver = 'sqlsrv';
+
+	/**
+	 * Scrollable flag
+	 *
+	 * Determines what cursor type to use when executing queries.
+	 *
+	 * FALSE or SQLSRV_CURSOR_FORWARD would increase performance,
+	 * but would disable num_rows() (and possibly insert_id())
+	 *
+	 * @var	mixed
+	 */
+	public $scrollable;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ORDER BY random keyword
+	 *
+	 * @var	array
+	 */
+	protected $_random_keyword = array('NEWID()', 'RAND(%d)');
+
+	/**
+	 * Quoted identifier flag
+	 *
+	 * Whether to use SQL-92 standard quoted identifier
+	 * (double quotes) or brackets for identifier escaping.
+	 *
+	 * @var	bool
+	 */
+	protected $_quoted_identifier = TRUE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params
+	 * @return	void
+	 */
+	public function __construct($params)
+	{
+		parent::__construct($params);
+
+		// This is only supported as of SQLSRV 3.0
+		if ($this->scrollable === NULL)
+		{
+			$this->scrollable = defined('SQLSRV_CURSOR_CLIENT_BUFFERED')
+				? SQLSRV_CURSOR_CLIENT_BUFFERED
+				: FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database connection
+	 *
+	 * @param	bool	$pooling
+	 * @return	resource
+	 */
+	public function db_connect($pooling = FALSE)
+	{
+		$charset = in_array(strtolower($this->char_set), array('utf-8', 'utf8'), TRUE)
+			? 'UTF-8' : SQLSRV_ENC_CHAR;
+
+		$connection = array(
+			'UID'			=> empty($this->username) ? '' : $this->username,
+			'PWD'			=> empty($this->password) ? '' : $this->password,
+			'Database'		=> $this->database,
+			'ConnectionPooling'	=> ($pooling === TRUE) ? 1 : 0,
+			'CharacterSet'		=> $charset,
+			'Encrypt'		=> ($this->encrypt === TRUE) ? 1 : 0,
+			'ReturnDatesAsStrings'	=> 1
+		);
+
+		// If the username and password are both empty, assume this is a
+		// 'Windows Authentication Mode' connection.
+		if (empty($connection['UID']) && empty($connection['PWD']))
+		{
+			unset($connection['UID'], $connection['PWD']);
+		}
+
+		if (FALSE !== ($this->conn_id = sqlsrv_connect($this->hostname, $connection)))
+		{
+			// Determine how identifiers are escaped
+			$query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
+			$query = $query->row_array();
+			$this->_quoted_identifier = empty($query) ? FALSE : (bool) $query['qi'];
+			$this->_escape_char = ($this->_quoted_identifier) ? '"' : array('[', ']');
+		}
+
+		return $this->conn_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @param	string	$database
+	 * @return	bool
+	 */
+	public function db_select($database = '')
+	{
+		if ($database === '')
+		{
+			$database = $this->database;
+		}
+
+		if ($this->_execute('USE '.$this->escape_identifiers($database)))
+		{
+			$this->database = $database;
+			$this->data_cache = array();
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @param	string	$sql	an SQL query
+	 * @return	resource
+	 */
+	protected function _execute($sql)
+	{
+		return ($this->scrollable === FALSE OR $this->is_write_type($sql))
+			? sqlsrv_query($this->conn_id, $sql)
+			: sqlsrv_query($this->conn_id, $sql, NULL, array('Scrollable' => $this->scrollable));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_begin()
+	{
+		return sqlsrv_begin_transaction($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_commit()
+	{
+		return sqlsrv_commit($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @return	bool
+	 */
+	protected function _trans_rollback()
+	{
+		return sqlsrv_rollback($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @return	int
+	 */
+	public function affected_rows()
+	{
+		return sqlsrv_rows_affected($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * Returns the last id created in the Identity column.
+	 *
+	 * @return	string
+	 */
+	public function insert_id()
+	{
+		return $this->query('SELECT SCOPE_IDENTITY() AS insert_id')->row()->insert_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Database version number
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		if (isset($this->data_cache['version']))
+		{
+			return $this->data_cache['version'];
+		}
+
+		if ( ! $this->conn_id OR ($info = sqlsrv_server_info($this->conn_id)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		return $this->data_cache['version'] = $info['SQLServerVersion'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @param	bool
+	 * @return	string	$prefix_limit
+	 */
+	protected function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = 'SELECT '.$this->escape_identifiers('name')
+			.' FROM '.$this->escape_identifiers('sysobjects')
+			.' WHERE '.$this->escape_identifiers('type')." = 'U'";
+
+		if ($prefix_limit === TRUE && $this->dbprefix !== '')
+		{
+			$sql .= ' AND '.$this->escape_identifiers('name')." LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+				.sprintf($this->_escape_like_str, $this->_escape_like_chr);
+		}
+
+		return $sql.' ORDER BY '.$this->escape_identifiers('name');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _list_columns($table = '')
+	{
+		return 'SELECT COLUMN_NAME
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns an object with field data
+	 *
+	 * @param	string	$table
+	 * @return	array
+	 */
+	public function field_data($table)
+	{
+		$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, COLUMN_DEFAULT
+			FROM INFORMATION_SCHEMA.Columns
+			WHERE UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
+
+		if (($query = $this->query($sql)) === FALSE)
+		{
+			return FALSE;
+		}
+		$query = $query->result_object();
+
+		$retval = array();
+		for ($i = 0, $c = count($query); $i < $c; $i++)
+		{
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $query[$i]->COLUMN_NAME;
+			$retval[$i]->type		= $query[$i]->DATA_TYPE;
+			$retval[$i]->max_length		= ($query[$i]->CHARACTER_MAXIMUM_LENGTH > 0) ? $query[$i]->CHARACTER_MAXIMUM_LENGTH : $query[$i]->NUMERIC_PRECISION;
+			$retval[$i]->default		= $query[$i]->COLUMN_DEFAULT;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error
+	 *
+	 * Returns an array containing code and message of the last
+	 * database error that has occurred.
+	 *
+	 * @return	array
+	 */
+	public function error()
+	{
+		$error = array('code' => '00000', 'message' => '');
+		$sqlsrv_errors = sqlsrv_errors(SQLSRV_ERR_ERRORS);
+
+		if ( ! is_array($sqlsrv_errors))
+		{
+			return $error;
+		}
+
+		$sqlsrv_error = array_shift($sqlsrv_errors);
+		if (isset($sqlsrv_error['SQLSTATE']))
+		{
+			$error['code'] = isset($sqlsrv_error['code']) ? $sqlsrv_error['SQLSTATE'].'/'.$sqlsrv_error['code'] : $sqlsrv_error['SQLSTATE'];
+		}
+		elseif (isset($sqlsrv_error['code']))
+		{
+			$error['code'] = $sqlsrv_error['code'];
+		}
+
+		if (isset($sqlsrv_error['message']))
+		{
+			$error['message'] = $sqlsrv_error['message'];
+		}
+
+		return $error;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @param	array	$values
+	 * @return	string
+	 */
+	protected function _update($table, $values)
+	{
+		$this->qb_limit = FALSE;
+		$this->qb_orderby = array();
+		return parent::_update($table, $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 *
+	 * If the database does not support the TRUNCATE statement,
+	 * then this method maps to 'DELETE FROM table'
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _truncate($table)
+	{
+		return 'TRUNCATE TABLE '.$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @param	string	$table
+	 * @return	string
+	 */
+	protected function _delete($table)
+	{
+		if ($this->qb_limit)
+		{
+			return 'WITH ci_delete AS (SELECT TOP '.$this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
+		}
+
+		return parent::_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * LIMIT
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @param	string	$sql	SQL Query
+	 * @return	string
+	 */
+	protected function _limit($sql)
+	{
+		// As of SQL Server 2012 (11.0.*) OFFSET is supported
+		if (version_compare($this->version(), '11', '>='))
+		{
+			// SQL Server OFFSET-FETCH can be used only with the ORDER BY clause
+			empty($this->qb_orderby) && $sql .= ' ORDER BY 1';
+
+			return $sql.' OFFSET '.(int) $this->qb_offset.' ROWS FETCH NEXT '.$this->qb_limit.' ROWS ONLY';
+		}
+
+		$limit = $this->qb_offset + $this->qb_limit;
+
+		// An ORDER BY clause is required for ROW_NUMBER() to work
+		if ($this->qb_offset && ! empty($this->qb_orderby))
+		{
+			$orderby = $this->_compile_order_by();
+
+			// We have to strip the ORDER BY clause
+			$sql = trim(substr($sql, 0, strrpos($sql, $orderby)));
+
+			// Get the fields to select from our subquery, so that we can avoid CI_rownum appearing in the actual results
+			if (count($this->qb_select) === 0 OR strpos(implode(',', $this->qb_select), '*') !== FALSE)
+			{
+				$select = '*'; // Inevitable
+			}
+			else
+			{
+				// Use only field names and their aliases, everything else is out of our scope.
+				$select = array();
+				$field_regexp = ($this->_quoted_identifier)
+					? '("[^\"]+")' : '(\[[^\]]+\])';
+				for ($i = 0, $c = count($this->qb_select); $i < $c; $i++)
+				{
+					$select[] = preg_match('/(?:\s|\.)'.$field_regexp.'$/i', $this->qb_select[$i], $m)
+						? $m[1] : $this->qb_select[$i];
+				}
+				$select = implode(', ', $select);
+			}
+
+			return 'SELECT '.$select." FROM (\n\n"
+				.preg_replace('/^(SELECT( DISTINCT)?)/i', '\\1 ROW_NUMBER() OVER('.trim($orderby).') AS '.$this->escape_identifiers('CI_rownum').', ', $sql)
+				."\n\n) ".$this->escape_identifiers('CI_subquery')
+				."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.($this->qb_offset + 1).' AND '.$limit;
+		}
+
+		return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data.
+	 *
+	 * @param	string	$table	Table name
+	 * @param	array	$keys	INSERT keys
+	 * @param	array	$values	INSERT values
+	 * @return	string|bool
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		// Multiple-value inserts are only supported as of SQL Server 2008
+		if (version_compare($this->version(), '10', '>='))
+		{
+			return parent::_insert_batch($table, $keys, $values);
+		}
+
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @return	void
+	 */
+	protected function _close()
+	{
+		sqlsrv_close($this->conn_id);
+	}
+
+}
diff --git a/system/database/drivers/sqlsrv/sqlsrv_forge.php b/system/database/drivers/sqlsrv/sqlsrv_forge.php
new file mode 100644
index 00000000..610d2e42
--- /dev/null
+++ b/system/database/drivers/sqlsrv/sqlsrv_forge.php
@@ -0,0 +1,149 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.3
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLSRV Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlsrv_forge extends CI_DB_forge {
+
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= "IF NOT EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nCREATE TABLE";
+
+	/**
+	 * DROP TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_drop_table_if	= "IF EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nDROP TABLE";
+
+	/**
+	 * UNSIGNED support
+	 *
+	 * @var	array
+	 */
+	protected $_unsigned		= array(
+		'TINYINT'	=> 'SMALLINT',
+		'SMALLINT'	=> 'INT',
+		'INT'		=> 'BIGINT',
+		'REAL'		=> 'FLOAT'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ALTER TABLE
+	 *
+	 * @param	string	$alter_type	ALTER type
+	 * @param	string	$table		Table name
+	 * @param	mixed	$field		Column definition
+	 * @return	string|string[]
+	 */
+	protected function _alter_table($alter_type, $table, $field)
+	{
+		if (in_array($alter_type, array('ADD', 'DROP'), TRUE))
+		{
+			return parent::_alter_table($alter_type, $table, $field);
+		}
+
+		$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table).' ALTER COLUMN ';
+		$sqls = array();
+		for ($i = 0, $c = count($field); $i < $c; $i++)
+		{
+			$sqls[] = $sql.$this->_process_column($field[$i]);
+		}
+
+		return $sqls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute TYPE
+	 *
+	 * Performs a data type mapping between different databases.
+	 *
+	 * @param	array	&$attributes
+	 * @return	void
+	 */
+	protected function _attr_type(&$attributes)
+	{
+		if (isset($attributes['CONSTRAINT']) && strpos($attributes['TYPE'], 'INT') !== FALSE)
+		{
+			unset($attributes['CONSTRAINT']);
+		}
+
+		switch (strtoupper($attributes['TYPE']))
+		{
+			case 'MEDIUMINT':
+				$attributes['TYPE'] = 'INTEGER';
+				$attributes['UNSIGNED'] = FALSE;
+				return;
+			case 'INTEGER':
+				$attributes['TYPE'] = 'INT';
+				return;
+			default: return;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field attribute AUTO_INCREMENT
+	 *
+	 * @param	array	&$attributes
+	 * @param	array	&$field
+	 * @return	void
+	 */
+	protected function _attr_auto_increment(&$attributes, &$field)
+	{
+		if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
+		{
+			$field['auto_increment'] = ' IDENTITY(1,1)';
+		}
+	}
+
+}
diff --git a/system/database/drivers/sqlsrv/sqlsrv_result.php b/system/database/drivers/sqlsrv/sqlsrv_result.php
new file mode 100644
index 00000000..bf588442
--- /dev/null
+++ b/system/database/drivers/sqlsrv/sqlsrv_result.php
@@ -0,0 +1,193 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.3
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLSRV Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlsrv_result extends CI_DB_result {
+
+	/**
+	 * Scrollable flag
+	 *
+	 * @var	mixed
+	 */
+	public $scrollable;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	object	$driver_object
+	 * @return	void
+	 */
+	public function __construct(&$driver_object)
+	{
+		parent::__construct($driver_object);
+
+		$this->scrollable = $driver_object->scrollable;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_rows()
+	{
+		// sqlsrv_num_rows() doesn't work with the FORWARD and DYNAMIC cursors (FALSE is the same as FORWARD)
+		if ( ! in_array($this->scrollable, array(FALSE, SQLSRV_CURSOR_FORWARD, SQLSRV_CURSOR_DYNAMIC), TRUE))
+		{
+			return parent::num_rows();
+		}
+
+		return is_int($this->num_rows)
+			? $this->num_rows
+			: $this->num_rows = sqlsrv_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @return	int
+	 */
+	public function num_fields()
+	{
+		return @sqlsrv_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @return	array
+	 */
+	public function list_fields()
+	{
+		$field_names = array();
+		foreach (sqlsrv_field_metadata($this->result_id) as $offset => $field)
+		{
+			$field_names[] = $field['Name'];
+		}
+
+		return $field_names;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @return	array
+	 */
+	public function field_data()
+	{
+		$retval = array();
+		foreach (sqlsrv_field_metadata($this->result_id) as $i => $field)
+		{
+			$retval[$i]		= new stdClass();
+			$retval[$i]->name	= $field['Name'];
+			$retval[$i]->type	= $field['Type'];
+			$retval[$i]->max_length	= $field['Size'];
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	void
+	 */
+	public function free_result()
+	{
+		if (is_resource($this->result_id))
+		{
+			sqlsrv_free_stmt($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @return	array
+	 */
+	protected function _fetch_assoc()
+	{
+		return sqlsrv_fetch_array($this->result_id, SQLSRV_FETCH_ASSOC);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @param	string	$class_name
+	 * @return	object
+	 */
+	protected function _fetch_object($class_name = 'stdClass')
+	{
+		return sqlsrv_fetch_object($this->result_id, $class_name);
+	}
+
+}
diff --git a/system/database/drivers/sqlsrv/sqlsrv_utility.php b/system/database/drivers/sqlsrv/sqlsrv_utility.php
new file mode 100644
index 00000000..bb2a6780
--- /dev/null
+++ b/system/database/drivers/sqlsrv/sqlsrv_utility.php
@@ -0,0 +1,77 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.3
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * SQLSRV Utility Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/database/
+ */
+class CI_DB_sqlsrv_utility extends CI_DB_utility {
+
+	/**
+	 * List databases statement
+	 *
+	 * @var	string
+	 */
+	protected $_list_databases	= 'EXEC sp_helpdb'; // Can also be: EXEC sp_databases
+
+	/**
+	 * OPTIMIZE TABLE statement
+	 *
+	 * @var	string
+	 */
+	protected $_optimize_table	= 'ALTER INDEX all ON %s REORGANIZE';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Export
+	 *
+	 * @param	array	$params	Preferences
+	 * @return	bool
+	 */
+	protected function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsupported_feature');
+	}
+
+}
diff --git a/system/database/index.html b/system/database/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/database/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/fonts/index.html b/system/fonts/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/fonts/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/fonts/texb.ttf b/system/fonts/texb.ttf
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diff --git a/system/helpers/array_helper.php b/system/helpers/array_helper.php
new file mode 100644
index 00000000..2c359240
--- /dev/null
+++ b/system/helpers/array_helper.php
@@ -0,0 +1,115 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Array Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/array_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('element'))
+{
+	/**
+	 * Element
+	 *
+	 * Lets you determine whether an array index is set and whether it has a value.
+	 * If the element is empty it returns NULL (or whatever you specify as the default value.)
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	mixed
+	 * @return	mixed	depends on what the array contains
+	 */
+	function element($item, array $array, $default = NULL)
+	{
+		return array_key_exists($item, $array) ? $array[$item] : $default;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('random_element'))
+{
+	/**
+	 * Random Element - Takes an array as input and returns a random element
+	 *
+	 * @param	array
+	 * @return	mixed	depends on what the array contains
+	 */
+	function random_element($array)
+	{
+		return is_array($array) ? $array[array_rand($array)] : $array;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('elements'))
+{
+	/**
+	 * Elements
+	 *
+	 * Returns only the array items specified. Will return a default value if
+	 * it is not set.
+	 *
+	 * @param	array
+	 * @param	array
+	 * @param	mixed
+	 * @return	mixed	depends on what the array contains
+	 */
+	function elements($items, array $array, $default = NULL)
+	{
+		$return = array();
+
+		is_array($items) OR $items = array($items);
+
+		foreach ($items as $item)
+		{
+			$return[$item] = array_key_exists($item, $array) ? $array[$item] : $default;
+		}
+
+		return $return;
+	}
+}
diff --git a/system/helpers/captcha_helper.php b/system/helpers/captcha_helper.php
new file mode 100644
index 00000000..6fce0526
--- /dev/null
+++ b/system/helpers/captcha_helper.php
@@ -0,0 +1,384 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter CAPTCHA Helper
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/captcha_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('create_captcha'))
+{
+	/**
+	 * Create CAPTCHA
+	 *
+	 * @param	array	$data		Data for the CAPTCHA
+	 * @param	string	$img_path	Path to create the image in (deprecated)
+	 * @param	string	$img_url	URL to the CAPTCHA image folder (deprecated)
+	 * @param	string	$font_path	Server path to font (deprecated)
+	 * @return	string
+	 */
+	function create_captcha($data = '', $img_path = '', $img_url = '', $font_path = '')
+	{
+		$defaults = array(
+			'word'		=> '',
+			'img_path'	=> '',
+			'img_url'	=> '',
+			'img_width'	=> '150',
+			'img_height'	=> '30',
+			'img_alt'	=> 'captcha',
+			'img_class'	=> '',
+			'font_path'	=> '',
+			'font_size'	=> 16,
+			'expiration'	=> 7200,
+			'word_length'	=> 8,
+			'img_id'	=> '',
+			'pool'		=> '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
+			'colors'	=> array(
+				'background'	=> array(255,255,255),
+				'border'	=> array(153,102,102),
+				'text'		=> array(204,153,153),
+				'grid'		=> array(255,182,182)
+			)
+		);
+
+		$now = microtime(TRUE);
+
+		foreach ($defaults as $key => $val)
+		{
+			if ( ! is_array($data) && empty($$key))
+			{
+				$$key = $val;
+			}
+			else
+			{
+				$$key = isset($data[$key]) ? $data[$key] : $val;
+			}
+		}
+
+		if ( ! extension_loaded('gd'))
+		{
+			log_message('error', 'create_captcha(): GD extension is not loaded.');
+			return FALSE;
+		}
+
+		if ($img_path === '' OR $img_url === '')
+		{
+			log_message('error', 'create_captcha(): $img_path and $img_url are required.');
+			return FALSE;
+		}
+
+		if ( ! is_dir($img_path) OR ! is_really_writable($img_path))
+		{
+			log_message('error', "create_captcha(): '{$img_path}' is not a dir, nor is it writable.");
+			return FALSE;
+		}
+
+		if ($img_url !== '' OR $img_path !== '')
+		{
+			if ($img_path === '' OR $img_url === '')
+			{
+				log_message('error', 'create_captcha(): $img_path and $img_url are required.');
+				return FALSE;
+			}
+
+			if ( ! is_dir($img_path) OR ! is_really_writable($img_path))
+			{
+				log_message('error', "create_captcha(): '{$img_path}' is not a dir, nor is it writable.");
+				return FALSE;
+			}
+
+			/**
+			 * Remove old images
+			 */
+			$current_dir = @opendir($img_path);
+			while ($filename = @readdir($current_dir))
+			{
+				if (preg_match('#^(?<ts>\d{10})\.png$#', $filename, $match) && ($match['ts'] + $expiration) < $now)
+				{
+					@unlink($img_path.$filename);
+				}
+			}
+
+			@closedir($current_dir);
+
+			// This variable will later be used later to determine whether we write to disk or output a data:image URI
+			$img_filename = $now.'.png';
+		}
+		else
+		{
+			$img_filename = NULL;
+		}
+
+		// -----------------------------------
+		// Do we have a "word" yet?
+		// -----------------------------------
+
+		if (empty($word))
+		{
+			$word = '';
+			$pool_length = strlen($pool);
+			$rand_max = $pool_length - 1;
+
+			// PHP7 or a suitable polyfill
+			if (function_exists('random_int'))
+			{
+				try
+				{
+					for ($i = 0; $i < $word_length; $i++)
+					{
+						$word .= $pool[random_int(0, $rand_max)];
+					}
+				}
+				catch (Exception $e)
+				{
+					// This means fallback to the next possible
+					// alternative to random_int()
+					$word = '';
+				}
+			}
+		}
+
+		if (empty($word))
+		{
+			// Nobody will have a larger character pool than
+			// 256 characters, but let's handle it just in case ...
+			//
+			// No, I do not care that the fallback to mt_rand() can
+			// handle it; if you trigger this, you're very obviously
+			// trying to break it. -- Narf
+			if ($pool_length > 256)
+			{
+				return FALSE;
+			}
+
+			// We'll try using the operating system's PRNG first,
+			// which we can access through CI_Security::get_random_bytes()
+			$security = get_instance()->security;
+
+			// To avoid numerous get_random_bytes() calls, we'll
+			// just try fetching as much bytes as we need at once.
+			if (($bytes = $security->get_random_bytes($pool_length)) !== FALSE)
+			{
+				$byte_index = $word_index = 0;
+				while ($word_index < $word_length)
+				{
+					// Do we have more random data to use?
+					// It could be exhausted by previous iterations
+					// ignoring bytes higher than $rand_max.
+					if ($byte_index === $pool_length)
+					{
+						// No failures should be possible if the
+						// first get_random_bytes() call didn't
+						// return FALSE, but still ...
+						for ($i = 0; $i < 5; $i++)
+						{
+							if (($bytes = $security->get_random_bytes($pool_length)) === FALSE)
+							{
+								continue;
+							}
+
+							$byte_index = 0;
+							break;
+						}
+
+						if ($bytes === FALSE)
+						{
+							// Sadly, this means fallback to mt_rand()
+							$word = '';
+							break;
+						}
+					}
+
+					list(, $rand_index) = unpack('C', $bytes[$byte_index++]);
+					if ($rand_index > $rand_max)
+					{
+						continue;
+					}
+
+					$word .= $pool[$rand_index];
+					$word_index++;
+				}
+			}
+		}
+
+		if (empty($word))
+		{
+			for ($i = 0; $i < $word_length; $i++)
+			{
+				$word .= $pool[mt_rand(0, $rand_max)];
+			}
+		}
+		elseif ( ! is_string($word))
+		{
+			$word = (string) $word;
+		}
+
+		// -----------------------------------
+		// Determine angle and position
+		// -----------------------------------
+		$length	= strlen($word);
+		$angle	= ($length >= 6) ? mt_rand(-($length - 6), ($length - 6)) : 0;
+		$x_axis	= mt_rand(6, (360 / $length)-16);
+		$y_axis = ($angle >= 0) ? mt_rand($img_height, $img_width) : mt_rand(6, $img_height);
+
+		// Create image
+		// PHP.net recommends imagecreatetruecolor(), but it isn't always available
+		$im = function_exists('imagecreatetruecolor')
+			? imagecreatetruecolor($img_width, $img_height)
+			: imagecreate($img_width, $img_height);
+
+		// -----------------------------------
+		//  Assign colors
+		// ----------------------------------
+
+		is_array($colors) OR $colors = $defaults['colors'];
+
+		foreach (array_keys($defaults['colors']) as $key)
+		{
+			// Check for a possible missing value
+			is_array($colors[$key]) OR $colors[$key] = $defaults['colors'][$key];
+			$colors[$key] = imagecolorallocate($im, $colors[$key][0], $colors[$key][1], $colors[$key][2]);
+		}
+
+		// Create the rectangle
+		ImageFilledRectangle($im, 0, 0, $img_width, $img_height, $colors['background']);
+
+		// -----------------------------------
+		//  Create the spiral pattern
+		// -----------------------------------
+		$theta		= 1;
+		$thetac		= 7;
+		$radius		= 16;
+		$circles	= 20;
+		$points		= 32;
+
+		for ($i = 0, $cp = ($circles * $points) - 1; $i < $cp; $i++)
+		{
+			$theta += $thetac;
+			$rad = $radius * ($i / $points);
+			$x = ($rad * cos($theta)) + $x_axis;
+			$y = ($rad * sin($theta)) + $y_axis;
+			$theta += $thetac;
+			$rad1 = $radius * (($i + 1) / $points);
+			$x1 = ($rad1 * cos($theta)) + $x_axis;
+			$y1 = ($rad1 * sin($theta)) + $y_axis;
+			imageline($im, $x, $y, $x1, $y1, $colors['grid']);
+			$theta -= $thetac;
+		}
+
+		// -----------------------------------
+		//  Write the text
+		// -----------------------------------
+
+		$use_font = ($font_path !== '' && file_exists($font_path) && function_exists('imagettftext'));
+		if ($use_font === FALSE)
+		{
+			($font_size > 5) && $font_size = 5;
+			$x = mt_rand(0, $img_width / ($length / 3));
+			$y = 0;
+		}
+		else
+		{
+			($font_size > 30) && $font_size = 30;
+			$x = mt_rand(0, $img_width / ($length / 1.5));
+			$y = $font_size + 2;
+		}
+
+		for ($i = 0; $i < $length; $i++)
+		{
+			if ($use_font === FALSE)
+			{
+				$y = mt_rand(0 , $img_height / 2);
+				imagestring($im, $font_size, $x, $y, $word[$i], $colors['text']);
+				$x += ($font_size * 2);
+			}
+			else
+			{
+				$y = mt_rand($img_height / 2, $img_height - 3);
+				imagettftext($im, $font_size, $angle, $x, $y, $colors['text'], $font_path, $word[$i]);
+				$x += $font_size;
+			}
+		}
+
+		// Create the border
+		imagerectangle($im, 0, 0, $img_width - 1, $img_height - 1, $colors['border']);
+
+		// -----------------------------------
+		//  Generate the image
+		// -----------------------------------
+
+		if (isset($img_filename))
+		{
+			$img_src = rtrim($img_url, '/').'/'.$img_filename;
+			imagepng($im, $img_path.$img_filename);
+		}
+		else
+		{
+			// I don't see an easier way to get the image contents without writing to file
+			$buffer = fopen('php://memory', 'wb+');
+			imagepng($im, $buffer);
+			rewind($buffer);
+			$img_src = '';
+
+			// fread() will return an empty string (not FALSE) after the entire contents are read
+			while (strlen($read = fread($buffer, 4096)))
+			{
+				$img_src .= $read;
+			}
+
+			fclose($buffer);
+			$img_src = 'data:image/png;base64,'.base64_encode($img_src);
+		}
+
+		$img_class = trim($img_class);
+		$img_class = (bool) strlen($img_class) ? 'class="'.$img_class.'" ' : '';
+
+		$img = '<img '.($img_id === '' ? '' : 'id="'.$img_id.'"').' src="'.$img_src.'" style="width: '.$img_width.'px; height: '.$img_height .'px; border: 0;" '.$img_class.'alt="'.$img_alt.'" />';
+		ImageDestroy($im);
+
+		return array('word' => $word, 'time' => $now, 'image' => $img, 'filename' => $img_filename);
+	}
+}
diff --git a/system/helpers/cookie_helper.php b/system/helpers/cookie_helper.php
new file mode 100644
index 00000000..8183e054
--- /dev/null
+++ b/system/helpers/cookie_helper.php
@@ -0,0 +1,112 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Cookie Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/cookie_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_cookie'))
+{
+	/**
+	 * Set cookie
+	 *
+	 * Accepts seven parameters, or you can submit an associative
+	 * array in the first parameter containing all the values.
+	 *
+	 * @param	mixed
+	 * @param	string	the value of the cookie
+	 * @param	int	the number of seconds until expiration
+	 * @param	string	the cookie domain.  Usually:  .yourdomain.com
+	 * @param	string	the cookie path
+	 * @param	string	the cookie prefix
+	 * @param	bool	true makes the cookie secure
+	 * @param	bool	true makes the cookie accessible via http(s) only (no javascript)
+	 * @return	void
+	 */
+	function set_cookie($name, $value = '', $expire = 0, $domain = '', $path = '/', $prefix = '', $secure = NULL, $httponly = NULL)
+	{
+		// Set the config file options
+		get_instance()->input->set_cookie($name, $value, $expire, $domain, $path, $prefix, $secure, $httponly);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('get_cookie'))
+{
+	/**
+	 * Fetch an item from the COOKIE array
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	mixed
+	 */
+	function get_cookie($index, $xss_clean = FALSE)
+	{
+		$prefix = isset($_COOKIE[$index]) ? '' : config_item('cookie_prefix');
+		return get_instance()->input->cookie($prefix.$index, $xss_clean);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('delete_cookie'))
+{
+	/**
+	 * Delete a COOKIE
+	 *
+	 * @param	mixed
+	 * @param	string	the cookie domain. Usually: .yourdomain.com
+	 * @param	string	the cookie path
+	 * @param	string	the cookie prefix
+	 * @return	void
+	 */
+	function delete_cookie($name, $domain = '', $path = '/', $prefix = '')
+	{
+		set_cookie($name, '', '', $domain, $path, $prefix);
+	}
+}
diff --git a/system/helpers/date_helper.php b/system/helpers/date_helper.php
new file mode 100644
index 00000000..db9e9642
--- /dev/null
+++ b/system/helpers/date_helper.php
@@ -0,0 +1,702 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Date Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/date_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('now'))
+{
+	/**
+	 * Get "now" time
+	 *
+	 * Returns time() based on the timezone parameter or on the
+	 * "time_reference" setting
+	 *
+	 * @param	string
+	 * @return	int
+	 */
+	function now($timezone = NULL)
+	{
+		if (empty($timezone))
+		{
+			$timezone = config_item('time_reference');
+		}
+
+		if ($timezone === 'local' OR $timezone === date_default_timezone_get())
+		{
+			return time();
+		}
+
+		$datetime = new DateTime('now', new DateTimeZone($timezone));
+		sscanf($datetime->format('j-n-Y G:i:s'), '%d-%d-%d %d:%d:%d', $day, $month, $year, $hour, $minute, $second);
+
+		return mktime($hour, $minute, $second, $month, $day, $year);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('mdate'))
+{
+	/**
+	 * Convert MySQL Style Datecodes
+	 *
+	 * This function is identical to PHPs date() function,
+	 * except that it allows date codes to be formatted using
+	 * the MySQL style, where each code letter is preceded
+	 * with a percent sign:  %Y %m %d etc...
+	 *
+	 * The benefit of doing dates this way is that you don't
+	 * have to worry about escaping your text letters that
+	 * match the date codes.
+	 *
+	 * @param	string
+	 * @param	int
+	 * @return	int
+	 */
+	function mdate($datestr = '', $time = '')
+	{
+		if ($datestr === '')
+		{
+			return '';
+		}
+		elseif (empty($time))
+		{
+			$time = now();
+		}
+
+		$datestr = str_replace(
+			'%\\',
+			'',
+			preg_replace('/([a-z]+?){1}/i', '\\\\\\1', $datestr)
+		);
+
+		return date($datestr, $time);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('timespan'))
+{
+	/**
+	 * Timespan
+	 *
+	 * Returns a span of seconds in this format:
+	 *	10 days 14 hours 36 minutes 47 seconds
+	 *
+	 * @param	int	a number of seconds
+	 * @param	int	Unix timestamp
+	 * @param	int	a number of display units
+	 * @return	string
+	 */
+	function timespan($seconds = 1, $time = '', $units = 7)
+	{
+		$CI =& get_instance();
+		$CI->lang->load('date');
+
+		is_numeric($seconds) OR $seconds = 1;
+		is_numeric($time) OR $time = time();
+		is_numeric($units) OR $units = 7;
+
+		$seconds = ($time <= $seconds) ? 1 : $time - $seconds;
+
+		$str = array();
+		$years = floor($seconds / 31557600);
+
+		if ($years > 0)
+		{
+			$str[] = $years.' '.$CI->lang->line($years > 1 ? 'date_years' : 'date_year');
+		}
+
+		$seconds -= $years * 31557600;
+		$months = floor($seconds / 2629743);
+
+		if (count($str) < $units && ($years > 0 OR $months > 0))
+		{
+			if ($months > 0)
+			{
+				$str[] = $months.' '.$CI->lang->line($months > 1 ? 'date_months' : 'date_month');
+			}
+
+			$seconds -= $months * 2629743;
+		}
+
+		$weeks = floor($seconds / 604800);
+
+		if (count($str) < $units && ($years > 0 OR $months > 0 OR $weeks > 0))
+		{
+			if ($weeks > 0)
+			{
+				$str[] = $weeks.' '.$CI->lang->line($weeks > 1 ? 'date_weeks' : 'date_week');
+			}
+
+			$seconds -= $weeks * 604800;
+		}
+
+		$days = floor($seconds / 86400);
+
+		if (count($str) < $units && ($months > 0 OR $weeks > 0 OR $days > 0))
+		{
+			if ($days > 0)
+			{
+				$str[] = $days.' '.$CI->lang->line($days > 1 ? 'date_days' : 'date_day');
+			}
+
+			$seconds -= $days * 86400;
+		}
+
+		$hours = floor($seconds / 3600);
+
+		if (count($str) < $units && ($days > 0 OR $hours > 0))
+		{
+			if ($hours > 0)
+			{
+				$str[] = $hours.' '.$CI->lang->line($hours > 1 ? 'date_hours' : 'date_hour');
+			}
+
+			$seconds -= $hours * 3600;
+		}
+
+		$minutes = floor($seconds / 60);
+
+		if (count($str) < $units && ($days > 0 OR $hours > 0 OR $minutes > 0))
+		{
+			if ($minutes > 0)
+			{
+				$str[] = $minutes.' '.$CI->lang->line($minutes > 1 ? 'date_minutes' : 'date_minute');
+			}
+
+			$seconds -= $minutes * 60;
+		}
+
+		if (count($str) === 0)
+		{
+			$str[] = $seconds.' '.$CI->lang->line($seconds > 1 ? 'date_seconds' : 'date_second');
+		}
+
+		return implode(', ', $str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('days_in_month'))
+{
+	/**
+	 * Number of days in a month
+	 *
+	 * Takes a month/year as input and returns the number of days
+	 * for the given month/year. Takes leap years into consideration.
+	 *
+	 * @param	int	a numeric month
+	 * @param	int	a numeric year
+	 * @return	int
+	 */
+	function days_in_month($month = 0, $year = '')
+	{
+		if ($month < 1 OR $month > 12)
+		{
+			return 0;
+		}
+		elseif ( ! is_numeric($year) OR strlen($year) !== 4)
+		{
+			$year = date('Y');
+		}
+
+		if (defined('CAL_GREGORIAN'))
+		{
+			return cal_days_in_month(CAL_GREGORIAN, $month, $year);
+		}
+
+		if ($year >= 1970)
+		{
+			return (int) date('t', mktime(12, 0, 0, $month, 1, $year));
+		}
+
+		if ($month == 2)
+		{
+			if ($year % 400 === 0 OR ($year % 4 === 0 && $year % 100 !== 0))
+			{
+				return 29;
+			}
+		}
+
+		$days_in_month	= array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
+		return $days_in_month[$month - 1];
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('local_to_gmt'))
+{
+	/**
+	 * Converts a local Unix timestamp to GMT
+	 *
+	 * @param	int	Unix timestamp
+	 * @return	int
+	 */
+	function local_to_gmt($time = '')
+	{
+		if ($time === '')
+		{
+			$time = time();
+		}
+
+		return mktime(
+			gmdate('G', $time),
+			gmdate('i', $time),
+			gmdate('s', $time),
+			gmdate('n', $time),
+			gmdate('j', $time),
+			gmdate('Y', $time)
+		);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('gmt_to_local'))
+{
+	/**
+	 * Converts GMT time to a localized value
+	 *
+	 * Takes a Unix timestamp (in GMT) as input, and returns
+	 * at the local value based on the timezone and DST setting
+	 * submitted
+	 *
+	 * @param	int	Unix timestamp
+	 * @param	string	timezone
+	 * @param	bool	whether DST is active
+	 * @return	int
+	 */
+	function gmt_to_local($time = '', $timezone = 'UTC', $dst = FALSE)
+	{
+		if ($time === '')
+		{
+			return now();
+		}
+
+		$time += timezones($timezone) * 3600;
+
+		return ($dst === TRUE) ? $time + 3600 : $time;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('mysql_to_unix'))
+{
+	/**
+	 * Converts a MySQL Timestamp to Unix
+	 *
+	 * @param	int	MySQL timestamp YYYY-MM-DD HH:MM:SS
+	 * @return	int	Unix timstamp
+	 */
+	function mysql_to_unix($time = '')
+	{
+		// We'll remove certain characters for backward compatibility
+		// since the formatting changed with MySQL 4.1
+		// YYYY-MM-DD HH:MM:SS
+
+		$time = str_replace(array('-', ':', ' '), '', $time);
+
+		// YYYYMMDDHHMMSS
+		return mktime(
+			substr($time, 8, 2),
+			substr($time, 10, 2),
+			substr($time, 12, 2),
+			substr($time, 4, 2),
+			substr($time, 6, 2),
+			substr($time, 0, 4)
+		);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('unix_to_human'))
+{
+	/**
+	 * Unix to "Human"
+	 *
+	 * Formats Unix timestamp to the following prototype: 2006-08-21 11:35 PM
+	 *
+	 * @param	int	Unix timestamp
+	 * @param	bool	whether to show seconds
+	 * @param	string	format: us or euro
+	 * @return	string
+	 */
+	function unix_to_human($time = '', $seconds = FALSE, $fmt = 'us')
+	{
+		$r = date('Y', $time).'-'.date('m', $time).'-'.date('d', $time).' ';
+
+		if ($fmt === 'us')
+		{
+			$r .= date('h', $time).':'.date('i', $time);
+		}
+		else
+		{
+			$r .= date('H', $time).':'.date('i', $time);
+		}
+
+		if ($seconds)
+		{
+			$r .= ':'.date('s', $time);
+		}
+
+		if ($fmt === 'us')
+		{
+			return $r.' '.date('A', $time);
+		}
+
+		return $r;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('human_to_unix'))
+{
+	/**
+	 * Convert "human" date to GMT
+	 *
+	 * Reverses the above process
+	 *
+	 * @param	string	format: us or euro
+	 * @return	int
+	 */
+	function human_to_unix($datestr = '')
+	{
+		if ($datestr === '')
+		{
+			return FALSE;
+		}
+
+		$datestr = preg_replace('/\040+/', ' ', trim($datestr));
+
+		if ( ! preg_match('/^(\d{2}|\d{4})\-[0-9]{1,2}\-[0-9]{1,2}\s[0-9]{1,2}:[0-9]{1,2}(?::[0-9]{1,2})?(?:\s[AP]M)?$/i', $datestr))
+		{
+			return FALSE;
+		}
+
+		sscanf($datestr, '%d-%d-%d %s %s', $year, $month, $day, $time, $ampm);
+		sscanf($time, '%d:%d:%d', $hour, $min, $sec);
+		isset($sec) OR $sec = 0;
+
+		if (isset($ampm))
+		{
+			$ampm = strtolower($ampm);
+
+			if ($ampm[0] === 'p' && $hour < 12)
+			{
+				$hour += 12;
+			}
+			elseif ($ampm[0] === 'a' && $hour === 12)
+			{
+				$hour = 0;
+			}
+		}
+
+		return mktime($hour, $min, $sec, $month, $day, $year);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('nice_date'))
+{
+	/**
+	 * Turns many "reasonably-date-like" strings into something
+	 * that is actually useful. This only works for dates after unix epoch.
+	 *
+	 * @deprecated	3.1.3	Use DateTime::createFromFormat($input_format, $input)->format($output_format);
+	 * @param	string	The terribly formatted date-like string
+	 * @param	string	Date format to return (same as php date function)
+	 * @return	string
+	 */
+	function nice_date($bad_date = '', $format = FALSE)
+	{
+		if (empty($bad_date))
+		{
+			return 'Unknown';
+		}
+		elseif (empty($format))
+		{
+			$format = 'U';
+		}
+
+		// Date like: YYYYMM
+		if (preg_match('/^\d{6}$/i', $bad_date))
+		{
+			if (in_array(substr($bad_date, 0, 2), array('19', '20')))
+			{
+				$year  = substr($bad_date, 0, 4);
+				$month = substr($bad_date, 4, 2);
+			}
+			else
+			{
+				$month  = substr($bad_date, 0, 2);
+				$year   = substr($bad_date, 2, 4);
+			}
+
+			return date($format, strtotime($year.'-'.$month.'-01'));
+		}
+
+		// Date Like: YYYYMMDD
+		if (preg_match('/^\d{8}$/i', $bad_date, $matches))
+		{
+			return DateTime::createFromFormat('Ymd', $bad_date)->format($format);
+		}
+
+		// Date Like: MM-DD-YYYY __or__ M-D-YYYY (or anything in between)
+		if (preg_match('/^(\d{1,2})-(\d{1,2})-(\d{4})$/i', $bad_date, $matches))
+		{
+			return date($format, strtotime($matches[3].'-'.$matches[1].'-'.$matches[2]));
+		}
+
+		// Any other kind of string, when converted into UNIX time,
+		// produces "0 seconds after epoc..." is probably bad...
+		// return "Invalid Date".
+		if (date('U', strtotime($bad_date)) === '0')
+		{
+			return 'Invalid Date';
+		}
+
+		// It's probably a valid-ish date format already
+		return date($format, strtotime($bad_date));
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('timezone_menu'))
+{
+	/**
+	 * Timezone Menu
+	 *
+	 * Generates a drop-down menu of timezones.
+	 *
+	 * @param	string	timezone
+	 * @param	string	classname
+	 * @param	string	menu name
+	 * @param	mixed	attributes
+	 * @return	string
+	 */
+	function timezone_menu($default = 'UTC', $class = '', $name = 'timezones', $attributes = '')
+	{
+		$CI =& get_instance();
+		$CI->lang->load('date');
+
+		$default = ($default === 'GMT') ? 'UTC' : $default;
+
+		$menu = '<select name="'.$name.'"';
+
+		if ($class !== '')
+		{
+			$menu .= ' class="'.$class.'"';
+		}
+
+		$menu .= _stringify_attributes($attributes).">\n";
+
+		foreach (timezones() as $key => $val)
+		{
+			$selected = ($default === $key) ? ' selected="selected"' : '';
+			$menu .= '<option value="'.$key.'"'.$selected.'>'.$CI->lang->line($key)."</option>\n";
+		}
+
+		return $menu.'</select>';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('timezones'))
+{
+	/**
+	 * Timezones
+	 *
+	 * Returns an array of timezones. This is a helper function
+	 * for various other ones in this library
+	 *
+	 * @param	string	timezone
+	 * @return	string
+	 */
+	function timezones($tz = '')
+	{
+		// Note: Don't change the order of these even though
+		// some items appear to be in the wrong order
+
+		$zones = array(
+			'UM12'		=> -12,
+			'UM11'		=> -11,
+			'UM10'		=> -10,
+			'UM95'		=> -9.5,
+			'UM9'		=> -9,
+			'UM8'		=> -8,
+			'UM7'		=> -7,
+			'UM6'		=> -6,
+			'UM5'		=> -5,
+			'UM45'		=> -4.5,
+			'UM4'		=> -4,
+			'UM35'		=> -3.5,
+			'UM3'		=> -3,
+			'UM2'		=> -2,
+			'UM1'		=> -1,
+			'UTC'		=> 0,
+			'UP1'		=> +1,
+			'UP2'		=> +2,
+			'UP3'		=> +3,
+			'UP35'		=> +3.5,
+			'UP4'		=> +4,
+			'UP45'		=> +4.5,
+			'UP5'		=> +5,
+			'UP55'		=> +5.5,
+			'UP575'		=> +5.75,
+			'UP6'		=> +6,
+			'UP65'		=> +6.5,
+			'UP7'		=> +7,
+			'UP8'		=> +8,
+			'UP875'		=> +8.75,
+			'UP9'		=> +9,
+			'UP95'		=> +9.5,
+			'UP10'		=> +10,
+			'UP105'		=> +10.5,
+			'UP11'		=> +11,
+			'UP115'		=> +11.5,
+			'UP12'		=> +12,
+			'UP1275'	=> +12.75,
+			'UP13'		=> +13,
+			'UP14'		=> +14
+		);
+
+		if ($tz === '')
+		{
+			return $zones;
+		}
+
+		return isset($zones[$tz]) ? $zones[$tz] : 0;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('date_range'))
+{
+	/**
+	 * Date range
+	 *
+	 * Returns a list of dates within a specified period.
+	 *
+	 * @param	int	unix_start	UNIX timestamp of period start date
+	 * @param	int	unix_end|days	UNIX timestamp of period end date
+	 *					or interval in days.
+	 * @param	mixed	is_unix		Specifies whether the second parameter
+	 *					is a UNIX timestamp or a day interval
+	 *					 - TRUE or 'unix' for a timestamp
+	 *					 - FALSE or 'days' for an interval
+	 * @param	string  date_format	Output date format, same as in date()
+	 * @return	array
+	 */
+	function date_range($unix_start = '', $mixed = '', $is_unix = TRUE, $format = 'Y-m-d')
+	{
+		if ($unix_start == '' OR $mixed == '' OR $format == '')
+		{
+			return FALSE;
+		}
+
+		$is_unix = ! ( ! $is_unix OR $is_unix === 'days');
+
+		// Validate input and try strtotime() on invalid timestamps/intervals, just in case
+		if ( ( ! ctype_digit((string) $unix_start) && ($unix_start = @strtotime($unix_start)) === FALSE)
+			OR ( ! ctype_digit((string) $mixed) && ($is_unix === FALSE OR ($mixed = @strtotime($mixed)) === FALSE))
+			OR ($is_unix === TRUE && $mixed < $unix_start))
+		{
+			return FALSE;
+		}
+
+		if ($is_unix && ($unix_start == $mixed OR date($format, $unix_start) === date($format, $mixed)))
+		{
+			return array(date($format, $unix_start));
+		}
+
+		$range = array();
+
+		$from = new DateTime();
+		$from->setTimestamp($unix_start);
+
+		if ($is_unix)
+		{
+			$arg = new DateTime();
+			$arg->setTimestamp($mixed);
+		}
+		else
+		{
+			$arg = (int) $mixed;
+		}
+
+		$period = new DatePeriod($from, new DateInterval('P1D'), $arg);
+		foreach ($period as $date)
+		{
+			$range[] = $date->format($format);
+		}
+
+		/* If a period end date was passed to the DatePeriod constructor, it might not
+		 * be in our results. Not sure if this is a bug or it's just possible because
+		 * the end date might actually be less than 24 hours away from the previously
+		 * generated DateTime object, but either way - we have to append it manually.
+		 */
+		if ( ! is_int($arg) && $range[count($range) - 1] !== $arg->format($format))
+		{
+			$range[] = $arg->format($format);
+		}
+
+		return $range;
+	}
+}
diff --git a/system/helpers/directory_helper.php b/system/helpers/directory_helper.php
new file mode 100644
index 00000000..4732db57
--- /dev/null
+++ b/system/helpers/directory_helper.php
@@ -0,0 +1,101 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Directory Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/directory_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('directory_map'))
+{
+	/**
+	 * Create a Directory Map
+	 *
+	 * Reads the specified directory and builds an array
+	 * representation of it. Sub-folders contained with the
+	 * directory will be mapped as well.
+	 *
+	 * @param	string	$source_dir		Path to source
+	 * @param	int	$directory_depth	Depth of directories to traverse
+	 *						(0 = fully recursive, 1 = current dir, etc)
+	 * @param	bool	$hidden			Whether to show hidden files
+	 * @return	array
+	 */
+	function directory_map($source_dir, $directory_depth = 0, $hidden = FALSE)
+	{
+		if ($fp = @opendir($source_dir))
+		{
+			$filedata	= array();
+			$new_depth	= $directory_depth - 1;
+			$source_dir	= rtrim($source_dir, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;
+
+			while (FALSE !== ($file = readdir($fp)))
+			{
+				// Remove '.', '..', and hidden files [optional]
+				if ($file === '.' OR $file === '..' OR ($hidden === FALSE && $file[0] === '.'))
+				{
+					continue;
+				}
+
+				is_dir($source_dir.$file) && $file .= DIRECTORY_SEPARATOR;
+
+				if (($directory_depth < 1 OR $new_depth > 0) && is_dir($source_dir.$file))
+				{
+					$filedata[$file] = directory_map($source_dir.$file, $new_depth, $hidden);
+				}
+				else
+				{
+					$filedata[] = $file;
+				}
+			}
+
+			closedir($fp);
+			return $filedata;
+		}
+
+		return FALSE;
+	}
+}
diff --git a/system/helpers/download_helper.php b/system/helpers/download_helper.php
new file mode 100644
index 00000000..9bdeea13
--- /dev/null
+++ b/system/helpers/download_helper.php
@@ -0,0 +1,180 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Download Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/download_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('force_download'))
+{
+	/**
+	 * Force Download
+	 *
+	 * Generates headers that force a download to happen
+	 *
+	 * @param	mixed	filename (or an array of local file path => destination filename)
+	 * @param	mixed	the data to be downloaded
+	 * @param	bool	whether to try and send the actual file MIME type
+	 * @return	void
+	 */
+	function force_download($filename = '', $data = '', $set_mime = FALSE)
+	{
+		if ($filename === '' OR $data === '')
+		{
+			return;
+		}
+		elseif ($data === NULL)
+		{
+			// Is $filename an array as ['local source path' => 'destination filename']?
+			if (is_array($filename))
+			{
+				if (count($filename) !== 1)
+				{
+					return;
+				}
+
+				reset($filename);
+				$filepath = key($filename);
+				$filename = current($filename);
+
+				if (is_int($filepath))
+				{
+					return;
+				}
+			}
+			else
+			{
+				$filepath = $filename;
+				$filename = explode('/', str_replace(DIRECTORY_SEPARATOR, '/', $filename));
+				$filename = end($filename);
+			}
+
+			if ( ! @is_file($filepath) OR ($filesize = @filesize($filepath)) === FALSE)
+			{
+				return;
+			}
+		}
+		else
+		{
+			$filesize = strlen($data);
+		}
+
+		// Set the default MIME type to send
+		$mime = 'application/octet-stream';
+
+		$x = explode('.', $filename);
+		$extension = end($x);
+
+		if ($set_mime === TRUE)
+		{
+			if (count($x) === 1 OR $extension === '')
+			{
+				/* If we're going to detect the MIME type,
+				 * we'll need a file extension.
+				 */
+				return;
+			}
+
+			// Load the mime types
+			$mimes =& get_mimes();
+
+			// Only change the default MIME if we can find one
+			if (isset($mimes[$extension]))
+			{
+				$mime = is_array($mimes[$extension]) ? $mimes[$extension][0] : $mimes[$extension];
+			}
+		}
+
+		/* It was reported that browsers on Android 2.1 (and possibly older as well)
+		 * need to have the filename extension upper-cased in order to be able to
+		 * download it.
+		 *
+		 * Reference: http://digiblog.de/2011/04/19/android-and-the-download-file-headers/
+		 */
+		if (count($x) !== 1 && isset($_SERVER['HTTP_USER_AGENT']) && preg_match('/Android\s(1|2\.[01])/', $_SERVER['HTTP_USER_AGENT']))
+		{
+			$x[count($x) - 1] = strtoupper($extension);
+			$filename = implode('.', $x);
+		}
+
+		// Clean output buffer
+		if (ob_get_level() !== 0 && @ob_end_clean() === FALSE)
+		{
+			@ob_clean();
+		}
+
+		// RFC 6266 allows for multibyte filenames, but only in UTF-8,
+		// so we have to make it conditional ...
+		$charset = strtoupper(config_item('charset'));
+		$utf8_filename = ($charset !== 'UTF-8')
+			? get_instance()->utf8->convert_to_utf8($filename, $charset)
+			: $filename;
+		isset($utf8_filename[0]) && $utf8_filename = " filename*=UTF-8''".rawurlencode($utf8_filename);
+
+		// Generate the server headers
+		header('Content-Type: '.$mime);
+		header('Content-Disposition: attachment; filename="'.$filename.'";'.$utf8_filename);
+		header('Expires: 0');
+		header('Content-Transfer-Encoding: binary');
+		header('Content-Length: '.$filesize);
+		header('Cache-Control: private, no-transform, no-store, must-revalidate');
+
+		// If we have raw data - just dump it
+		if ($data !== NULL)
+		{
+			exit($data);
+		}
+
+		// Flush the file
+		if (@readfile($filepath) === FALSE)
+		{
+			return;
+		}
+
+		exit;
+	}
+}
diff --git a/system/helpers/file_helper.php b/system/helpers/file_helper.php
new file mode 100644
index 00000000..398d11af
--- /dev/null
+++ b/system/helpers/file_helper.php
@@ -0,0 +1,433 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter File Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/file_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('write_file'))
+{
+	/**
+	 * Write File
+	 *
+	 * Writes data to the file specified in the path.
+	 * Creates a new file if non-existent.
+	 *
+	 * @param	string	$path	File path
+	 * @param	string	$data	Data to write
+	 * @param	string	$mode	fopen() mode (default: 'wb')
+	 * @return	bool
+	 */
+	function write_file($path, $data, $mode = 'wb')
+	{
+		if ( ! $fp = @fopen($path, $mode))
+		{
+			return FALSE;
+		}
+
+		flock($fp, LOCK_EX);
+
+		for ($result = $written = 0, $length = strlen($data); $written < $length; $written += $result)
+		{
+			if (($result = fwrite($fp, substr($data, $written))) === FALSE)
+			{
+				break;
+			}
+		}
+
+		flock($fp, LOCK_UN);
+		fclose($fp);
+
+		return is_int($result);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('delete_files'))
+{
+	/**
+	 * Delete Files
+	 *
+	 * Deletes all files contained in the supplied directory path.
+	 * Files must be writable or owned by the system in order to be deleted.
+	 * If the second parameter is set to TRUE, any directories contained
+	 * within the supplied base directory will be nuked as well.
+	 *
+	 * @param	string	$path		File path
+	 * @param	bool	$del_dir	Whether to delete any directories found in the path
+	 * @param	bool	$htdocs		Whether to skip deleting .htaccess and index page files
+	 * @param	int	$_level		Current directory depth level (default: 0; internal use only)
+	 * @return	bool
+	 */
+	function delete_files($path, $del_dir = FALSE, $htdocs = FALSE, $_level = 0)
+	{
+		// Trim the trailing slash
+		$path = rtrim($path, '/\\');
+
+		if ( ! $current_dir = @opendir($path))
+		{
+			return FALSE;
+		}
+
+		while (FALSE !== ($filename = @readdir($current_dir)))
+		{
+			if ($filename !== '.' && $filename !== '..')
+			{
+				$filepath = $path.DIRECTORY_SEPARATOR.$filename;
+
+				if (is_dir($filepath) && $filename[0] !== '.' && ! is_link($filepath))
+				{
+					delete_files($filepath, $del_dir, $htdocs, $_level + 1);
+				}
+				elseif ($htdocs !== TRUE OR ! preg_match('/^(\.htaccess|index\.(html|htm|php)|web\.config)$/i', $filename))
+				{
+					@unlink($filepath);
+				}
+			}
+		}
+
+		closedir($current_dir);
+
+		return ($del_dir === TRUE && $_level > 0)
+			? @rmdir($path)
+			: TRUE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('get_filenames'))
+{
+	/**
+	 * Get Filenames
+	 *
+	 * Reads the specified directory and builds an array containing the filenames.
+	 * Any sub-folders contained within the specified path are read as well.
+	 *
+	 * @param	string	path to source
+	 * @param	bool	whether to include the path as part of the filename
+	 * @param	bool	internal variable to determine recursion status - do not use in calls
+	 * @return	array
+	 */
+	function get_filenames($source_dir, $include_path = FALSE, $_recursion = FALSE)
+	{
+		static $_filedata = array();
+
+		if ($fp = @opendir($source_dir))
+		{
+			// reset the array and make sure $source_dir has a trailing slash on the initial call
+			if ($_recursion === FALSE)
+			{
+				$_filedata = array();
+				$source_dir = rtrim(realpath($source_dir), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;
+			}
+
+			while (FALSE !== ($file = readdir($fp)))
+			{
+				if (is_dir($source_dir.$file) && $file[0] !== '.')
+				{
+					get_filenames($source_dir.$file.DIRECTORY_SEPARATOR, $include_path, TRUE);
+				}
+				elseif ($file[0] !== '.')
+				{
+					$_filedata[] = ($include_path === TRUE) ? $source_dir.$file : $file;
+				}
+			}
+
+			closedir($fp);
+			return $_filedata;
+		}
+
+		return FALSE;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('get_dir_file_info'))
+{
+	/**
+	 * Get Directory File Information
+	 *
+	 * Reads the specified directory and builds an array containing the filenames,
+	 * filesize, dates, and permissions
+	 *
+	 * Any sub-folders contained within the specified path are read as well.
+	 *
+	 * @param	string	path to source
+	 * @param	bool	Look only at the top level directory specified?
+	 * @param	bool	internal variable to determine recursion status - do not use in calls
+	 * @return	array
+	 */
+	function get_dir_file_info($source_dir, $top_level_only = TRUE, $_recursion = FALSE)
+	{
+		static $_filedata = array();
+		$relative_path = $source_dir;
+
+		if ($fp = @opendir($source_dir))
+		{
+			// reset the array and make sure $source_dir has a trailing slash on the initial call
+			if ($_recursion === FALSE)
+			{
+				$_filedata = array();
+				$source_dir = rtrim(realpath($source_dir), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;
+			}
+
+			// Used to be foreach (scandir($source_dir, 1) as $file), but scandir() is simply not as fast
+			while (FALSE !== ($file = readdir($fp)))
+			{
+				if (is_dir($source_dir.$file) && $file[0] !== '.' && $top_level_only === FALSE)
+				{
+					get_dir_file_info($source_dir.$file.DIRECTORY_SEPARATOR, $top_level_only, TRUE);
+				}
+				elseif ($file[0] !== '.')
+				{
+					$_filedata[$file] = get_file_info($source_dir.$file);
+					$_filedata[$file]['relative_path'] = $relative_path;
+				}
+			}
+
+			closedir($fp);
+			return $_filedata;
+		}
+
+		return FALSE;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('get_file_info'))
+{
+	/**
+	 * Get File Info
+	 *
+	 * Given a file and path, returns the name, path, size, date modified
+	 * Second parameter allows you to explicitly declare what information you want returned
+	 * Options are: name, server_path, size, date, readable, writable, executable, fileperms
+	 * Returns FALSE if the file cannot be found.
+	 *
+	 * @param	string	path to file
+	 * @param	mixed	array or comma separated string of information returned
+	 * @return	array
+	 */
+	function get_file_info($file, $returned_values = array('name', 'server_path', 'size', 'date'))
+	{
+		if ( ! file_exists($file))
+		{
+			return FALSE;
+		}
+
+		if (is_string($returned_values))
+		{
+			$returned_values = explode(',', $returned_values);
+		}
+
+		foreach ($returned_values as $key)
+		{
+			switch ($key)
+			{
+				case 'name':
+					$fileinfo['name'] = basename($file);
+					break;
+				case 'server_path':
+					$fileinfo['server_path'] = $file;
+					break;
+				case 'size':
+					$fileinfo['size'] = filesize($file);
+					break;
+				case 'date':
+					$fileinfo['date'] = filemtime($file);
+					break;
+				case 'readable':
+					$fileinfo['readable'] = is_readable($file);
+					break;
+				case 'writable':
+					$fileinfo['writable'] = is_really_writable($file);
+					break;
+				case 'executable':
+					$fileinfo['executable'] = is_executable($file);
+					break;
+				case 'fileperms':
+					$fileinfo['fileperms'] = fileperms($file);
+					break;
+			}
+		}
+
+		return $fileinfo;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('get_mime_by_extension'))
+{
+	/**
+	 * Get Mime by Extension
+	 *
+	 * Translates a file extension into a mime type based on config/mimes.php.
+	 * Returns FALSE if it can't determine the type, or open the mime config file
+	 *
+	 * Note: this is NOT an accurate way of determining file mime types, and is here strictly as a convenience
+	 * It should NOT be trusted, and should certainly NOT be used for security
+	 *
+	 * @param	string	$filename	File name
+	 * @return	string
+	 */
+	function get_mime_by_extension($filename)
+	{
+		static $mimes;
+
+		if ( ! is_array($mimes))
+		{
+			$mimes = get_mimes();
+
+			if (empty($mimes))
+			{
+				return FALSE;
+			}
+		}
+
+		$extension = strtolower(substr(strrchr($filename, '.'), 1));
+
+		if (isset($mimes[$extension]))
+		{
+			return is_array($mimes[$extension])
+				? current($mimes[$extension]) // Multiple mime types, just give the first one
+				: $mimes[$extension];
+		}
+
+		return FALSE;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('symbolic_permissions'))
+{
+	/**
+	 * Symbolic Permissions
+	 *
+	 * Takes a numeric value representing a file's permissions and returns
+	 * standard symbolic notation representing that value
+	 *
+	 * @param	int	$perms	Permissions
+	 * @return	string
+	 */
+	function symbolic_permissions($perms)
+	{
+		if (($perms & 0xC000) === 0xC000)
+		{
+			$symbolic = 's'; // Socket
+		}
+		elseif (($perms & 0xA000) === 0xA000)
+		{
+			$symbolic = 'l'; // Symbolic Link
+		}
+		elseif (($perms & 0x8000) === 0x8000)
+		{
+			$symbolic = '-'; // Regular
+		}
+		elseif (($perms & 0x6000) === 0x6000)
+		{
+			$symbolic = 'b'; // Block special
+		}
+		elseif (($perms & 0x4000) === 0x4000)
+		{
+			$symbolic = 'd'; // Directory
+		}
+		elseif (($perms & 0x2000) === 0x2000)
+		{
+			$symbolic = 'c'; // Character special
+		}
+		elseif (($perms & 0x1000) === 0x1000)
+		{
+			$symbolic = 'p'; // FIFO pipe
+		}
+		else
+		{
+			$symbolic = 'u'; // Unknown
+		}
+
+		// Owner
+		$symbolic .= (($perms & 0x0100) ? 'r' : '-')
+			.(($perms & 0x0080) ? 'w' : '-')
+			.(($perms & 0x0040) ? (($perms & 0x0800) ? 's' : 'x' ) : (($perms & 0x0800) ? 'S' : '-'));
+
+		// Group
+		$symbolic .= (($perms & 0x0020) ? 'r' : '-')
+			.(($perms & 0x0010) ? 'w' : '-')
+			.(($perms & 0x0008) ? (($perms & 0x0400) ? 's' : 'x' ) : (($perms & 0x0400) ? 'S' : '-'));
+
+		// World
+		$symbolic .= (($perms & 0x0004) ? 'r' : '-')
+			.(($perms & 0x0002) ? 'w' : '-')
+			.(($perms & 0x0001) ? (($perms & 0x0200) ? 't' : 'x' ) : (($perms & 0x0200) ? 'T' : '-'));
+
+		return $symbolic;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('octal_permissions'))
+{
+	/**
+	 * Octal Permissions
+	 *
+	 * Takes a numeric value representing a file's permissions and returns
+	 * a three character string representing the file's octal permissions
+	 *
+	 * @param	int	$perms	Permissions
+	 * @return	string
+	 */
+	function octal_permissions($perms)
+	{
+		return substr(sprintf('%o', $perms), -3);
+	}
+}
diff --git a/system/helpers/form_helper.php b/system/helpers/form_helper.php
new file mode 100644
index 00000000..4b88d3b1
--- /dev/null
+++ b/system/helpers/form_helper.php
@@ -0,0 +1,1035 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Form Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/form_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_open'))
+{
+	/**
+	 * Form Declaration
+	 *
+	 * Creates the opening portion of the form.
+	 *
+	 * @param	string	the URI segments of the form destination
+	 * @param	array	a key/value pair of attributes
+	 * @param	array	a key/value pair hidden data
+	 * @return	string
+	 */
+	function form_open($action = '', $attributes = array(), $hidden = array())
+	{
+		$CI =& get_instance();
+
+		// If no action is provided then set to the current url
+		if ( ! $action)
+		{
+			$action = $CI->config->site_url($CI->uri->uri_string());
+		}
+		// If an action is not a full URL then turn it into one
+		elseif (strpos($action, '://') === FALSE)
+		{
+			$action = $CI->config->site_url($action);
+		}
+
+		$attributes = _attributes_to_string($attributes);
+
+		if (stripos($attributes, 'method=') === FALSE)
+		{
+			$attributes .= ' method="post"';
+		}
+
+		if (stripos($attributes, 'accept-charset=') === FALSE)
+		{
+			$attributes .= ' accept-charset="'.strtolower(config_item('charset')).'"';
+		}
+
+		$form = '<form action="'.$action.'"'.$attributes.">\n";
+
+		if (is_array($hidden))
+		{
+			foreach ($hidden as $name => $value)
+			{
+				$form .= '<input type="hidden" name="'.$name.'" value="'.html_escape($value).'" />'."\n";
+			}
+		}
+
+		// Add CSRF field if enabled, but leave it out for GET requests and requests to external websites
+		if ($CI->config->item('csrf_protection') === TRUE && strpos($action, $CI->config->base_url()) !== FALSE && ! stripos($form, 'method="get"'))
+		{
+			// Prepend/append random-length "white noise" around the CSRF
+			// token input, as a form of protection against BREACH attacks
+			if (FALSE !== ($noise = $CI->security->get_random_bytes(1)))
+			{
+				list(, $noise) = unpack('c', $noise);
+			}
+			else
+			{
+				$noise = mt_rand(-128, 127);
+			}
+
+			// Prepend if $noise has a negative value, append if positive, do nothing for zero
+			$prepend = $append = '';
+			if ($noise < 0)
+			{
+				$prepend = str_repeat(" ", abs($noise));
+			}
+			elseif ($noise > 0)
+			{
+				$append  = str_repeat(" ", $noise);
+			}
+
+			$form .= sprintf(
+				'%s<input type="hidden" name="%s" value="%s" />%s%s',
+				$prepend,
+				$CI->security->get_csrf_token_name(),
+				$CI->security->get_csrf_hash(),
+				$append,
+				"\n"
+			);
+		}
+
+		return $form;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_open_multipart'))
+{
+	/**
+	 * Form Declaration - Multipart type
+	 *
+	 * Creates the opening portion of the form, but with "multipart/form-data".
+	 *
+	 * @param	string	the URI segments of the form destination
+	 * @param	array	a key/value pair of attributes
+	 * @param	array	a key/value pair hidden data
+	 * @return	string
+	 */
+	function form_open_multipart($action = '', $attributes = array(), $hidden = array())
+	{
+		if (is_string($attributes))
+		{
+			$attributes .= ' enctype="multipart/form-data"';
+		}
+		else
+		{
+			$attributes['enctype'] = 'multipart/form-data';
+		}
+
+		return form_open($action, $attributes, $hidden);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_hidden'))
+{
+	/**
+	 * Hidden Input Field
+	 *
+	 * Generates hidden fields. You can pass a simple key/value string or
+	 * an associative array with multiple values.
+	 *
+	 * @param	mixed	$name		Field name
+	 * @param	string	$value		Field value
+	 * @param	bool	$recursing
+	 * @return	string
+	 */
+	function form_hidden($name, $value = '', $recursing = FALSE)
+	{
+		static $form;
+
+		if ($recursing === FALSE)
+		{
+			$form = "\n";
+		}
+
+		if (is_array($name))
+		{
+			foreach ($name as $key => $val)
+			{
+				form_hidden($key, $val, TRUE);
+			}
+
+			return $form;
+		}
+
+		if ( ! is_array($value))
+		{
+			$form .= '<input type="hidden" name="'.$name.'" value="'.html_escape($value)."\" />\n";
+		}
+		else
+		{
+			foreach ($value as $k => $v)
+			{
+				$k = is_int($k) ? '' : $k;
+				form_hidden($name.'['.$k.']', $v, TRUE);
+			}
+		}
+
+		return $form;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_input'))
+{
+	/**
+	 * Text Input Field
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_input($data = '', $value = '', $extra = '')
+	{
+		$defaults = array(
+			'type' => 'text',
+			'name' => is_array($data) ? '' : $data,
+			'value' => $value
+		);
+
+		return '<input '._parse_form_attributes($data, $defaults)._attributes_to_string($extra)." />\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_password'))
+{
+	/**
+	 * Password Field
+	 *
+	 * Identical to the input function but adds the "password" type
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_password($data = '', $value = '', $extra = '')
+	{
+		is_array($data) OR $data = array('name' => $data);
+		$data['type'] = 'password';
+		return form_input($data, $value, $extra);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_upload'))
+{
+	/**
+	 * Upload Field
+	 *
+	 * Identical to the input function but adds the "file" type
+	 *
+	 * @param	mixed
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_upload($data = '', $extra = '')
+	{
+		$defaults = array('type' => 'file', 'name' => '');
+		is_array($data) OR $data = array('name' => $data);
+		$data['type'] = 'file';
+
+		return '<input '._parse_form_attributes($data, $defaults)._attributes_to_string($extra)." />\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_textarea'))
+{
+	/**
+	 * Textarea field
+	 *
+	 * @param	mixed	$data
+	 * @param	string	$value
+	 * @param	mixed	$extra
+	 * @return	string
+	 */
+	function form_textarea($data = '', $value = '', $extra = '')
+	{
+		$defaults = array(
+			'name' => is_array($data) ? '' : $data,
+			'cols' => '40',
+			'rows' => '10'
+		);
+
+		if ( ! is_array($data) OR ! isset($data['value']))
+		{
+			$val = $value;
+		}
+		else
+		{
+			$val = $data['value'];
+			unset($data['value']); // textareas don't use the value attribute
+		}
+
+		return '<textarea '._parse_form_attributes($data, $defaults)._attributes_to_string($extra).'>'
+			.html_escape($val)
+			."</textarea>\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_multiselect'))
+{
+	/**
+	 * Multi-select menu
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	mixed
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_multiselect($name = '', $options = array(), $selected = array(), $extra = '')
+	{
+		$extra = _attributes_to_string($extra);
+		if (stripos($extra, 'multiple') === FALSE)
+		{
+			$extra .= ' multiple="multiple"';
+		}
+
+		return form_dropdown($name, $options, $selected, $extra);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('form_dropdown'))
+{
+	/**
+	 * Drop-down Menu
+	 *
+	 * @param	mixed	$data
+	 * @param	mixed	$options
+	 * @param	mixed	$selected
+	 * @param	mixed	$extra
+	 * @return	string
+	 */
+	function form_dropdown($data = '', $options = array(), $selected = array(), $extra = '')
+	{
+		$defaults = array();
+
+		if (is_array($data))
+		{
+			if (isset($data['selected']))
+			{
+				$selected = $data['selected'];
+				unset($data['selected']); // select tags don't have a selected attribute
+			}
+
+			if (isset($data['options']))
+			{
+				$options = $data['options'];
+				unset($data['options']); // select tags don't use an options attribute
+			}
+		}
+		else
+		{
+			$defaults = array('name' => $data);
+		}
+
+		is_array($selected) OR $selected = array($selected);
+		is_array($options) OR $options = array($options);
+
+		// If no selected state was submitted we will attempt to set it automatically
+		if (empty($selected))
+		{
+			if (is_array($data))
+			{
+				if (isset($data['name'], $_POST[$data['name']]))
+				{
+					$selected = array($_POST[$data['name']]);
+				}
+			}
+			elseif (isset($_POST[$data]))
+			{
+				$selected = array($_POST[$data]);
+			}
+		}
+
+		$extra = _attributes_to_string($extra);
+
+		$multiple = (count($selected) > 1 && stripos($extra, 'multiple') === FALSE) ? ' multiple="multiple"' : '';
+
+		$form = '<select '.rtrim(_parse_form_attributes($data, $defaults)).$extra.$multiple.">\n";
+
+		foreach ($options as $key => $val)
+		{
+			$key = (string) $key;
+
+			if (is_array($val))
+			{
+				if (empty($val))
+				{
+					continue;
+				}
+
+				$form .= '<optgroup label="'.$key."\">\n";
+
+				foreach ($val as $optgroup_key => $optgroup_val)
+				{
+					$sel = in_array($optgroup_key, $selected) ? ' selected="selected"' : '';
+					$form .= '<option value="'.html_escape($optgroup_key).'"'.$sel.'>'
+						.(string) $optgroup_val."</option>\n";
+				}
+
+				$form .= "</optgroup>\n";
+			}
+			else
+			{
+				$form .= '<option value="'.html_escape($key).'"'
+					.(in_array($key, $selected) ? ' selected="selected"' : '').'>'
+					.(string) $val."</option>\n";
+			}
+		}
+
+		return $form."</select>\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_checkbox'))
+{
+	/**
+	 * Checkbox Field
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	bool
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_checkbox($data = '', $value = '', $checked = FALSE, $extra = '')
+	{
+		$defaults = array('type' => 'checkbox', 'name' => ( ! is_array($data) ? $data : ''), 'value' => $value);
+
+		if (is_array($data) && array_key_exists('checked', $data))
+		{
+			$checked = $data['checked'];
+
+			if ($checked == FALSE)
+			{
+				unset($data['checked']);
+			}
+			else
+			{
+				$data['checked'] = 'checked';
+			}
+		}
+
+		if ($checked == TRUE)
+		{
+			$defaults['checked'] = 'checked';
+		}
+		else
+		{
+			unset($defaults['checked']);
+		}
+
+		return '<input '._parse_form_attributes($data, $defaults)._attributes_to_string($extra)." />\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_radio'))
+{
+	/**
+	 * Radio Button
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	bool
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_radio($data = '', $value = '', $checked = FALSE, $extra = '')
+	{
+		is_array($data) OR $data = array('name' => $data);
+		$data['type'] = 'radio';
+
+		return form_checkbox($data, $value, $checked, $extra);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_submit'))
+{
+	/**
+	 * Submit Button
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_submit($data = '', $value = '', $extra = '')
+	{
+		$defaults = array(
+			'type' => 'submit',
+			'name' => is_array($data) ? '' : $data,
+			'value' => $value
+		);
+
+		return '<input '._parse_form_attributes($data, $defaults)._attributes_to_string($extra)." />\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_reset'))
+{
+	/**
+	 * Reset Button
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_reset($data = '', $value = '', $extra = '')
+	{
+		$defaults = array(
+			'type' => 'reset',
+			'name' => is_array($data) ? '' : $data,
+			'value' => $value
+		);
+
+		return '<input '._parse_form_attributes($data, $defaults)._attributes_to_string($extra)." />\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_button'))
+{
+	/**
+	 * Form Button
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	mixed
+	 * @return	string
+	 */
+	function form_button($data = '', $content = '', $extra = '')
+	{
+		$defaults = array(
+			'name' => is_array($data) ? '' : $data,
+			'type' => 'button'
+		);
+
+		if (is_array($data) && isset($data['content']))
+		{
+			$content = $data['content'];
+			unset($data['content']); // content is not an attribute
+		}
+
+		return '<button '._parse_form_attributes($data, $defaults)._attributes_to_string($extra).'>'
+			.$content
+			."</button>\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_label'))
+{
+	/**
+	 * Form Label Tag
+	 *
+	 * @param	string	The text to appear onscreen
+	 * @param	string	The id the label applies to
+	 * @param	mixed	Additional attributes
+	 * @return	string
+	 */
+	function form_label($label_text = '', $id = '', $attributes = array())
+	{
+
+		$label = '<label';
+
+		if ($id !== '')
+		{
+			$label .= ' for="'.$id.'"';
+		}
+
+		$label .= _attributes_to_string($attributes);
+
+		return $label.'>'.$label_text.'</label>';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_fieldset'))
+{
+	/**
+	 * Fieldset Tag
+	 *
+	 * Used to produce <fieldset><legend>text</legend>.  To close fieldset
+	 * use form_fieldset_close()
+	 *
+	 * @param	string	The legend text
+	 * @param	array	Additional attributes
+	 * @return	string
+	 */
+	function form_fieldset($legend_text = '', $attributes = array())
+	{
+		$fieldset = '<fieldset'._attributes_to_string($attributes).">\n";
+		if ($legend_text !== '')
+		{
+			return $fieldset.'<legend>'.$legend_text."</legend>\n";
+		}
+
+		return $fieldset;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_fieldset_close'))
+{
+	/**
+	 * Fieldset Close Tag
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function form_fieldset_close($extra = '')
+	{
+		return '</fieldset>'.$extra;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_close'))
+{
+	/**
+	 * Form Close Tag
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function form_close($extra = '')
+	{
+		return '</form>'.$extra;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_value'))
+{
+	/**
+	 * Form Value
+	 *
+	 * Grabs a value from the POST array for the specified field so you can
+	 * re-populate an input field or textarea. If Form Validation
+	 * is active it retrieves the info from the validation class
+	 *
+	 * @param	string	$field		Field name
+	 * @param	string	$default	Default value
+	 * @param	bool	$html_escape	Whether to escape HTML special characters or not
+	 * @return	string
+	 */
+	function set_value($field, $default = '', $html_escape = TRUE)
+	{
+		$CI =& get_instance();
+
+		$value = (isset($CI->form_validation) && is_object($CI->form_validation) && $CI->form_validation->has_rule($field))
+			? $CI->form_validation->set_value($field, $default)
+			: $CI->input->post($field, FALSE);
+
+		isset($value) OR $value = $default;
+		return ($html_escape) ? html_escape($value) : $value;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_select'))
+{
+	/**
+	 * Set Select
+	 *
+	 * Let's you set the selected value of a <select> menu via data in the POST array.
+	 * If Form Validation is active it retrieves the info from the validation class
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	function set_select($field, $value = '', $default = FALSE)
+	{
+		$CI =& get_instance();
+
+		if (isset($CI->form_validation) && is_object($CI->form_validation) && $CI->form_validation->has_rule($field))
+		{
+			return $CI->form_validation->set_select($field, $value, $default);
+		}
+		elseif (($input = $CI->input->post($field, FALSE)) === NULL)
+		{
+			return ($default === TRUE) ? ' selected="selected"' : '';
+		}
+
+		$value = (string) $value;
+		if (is_array($input))
+		{
+			// Note: in_array('', array(0)) returns TRUE, do not use it
+			foreach ($input as &$v)
+			{
+				if ($value === $v)
+				{
+					return ' selected="selected"';
+				}
+			}
+
+			return '';
+		}
+
+		return ($input === $value) ? ' selected="selected"' : '';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_checkbox'))
+{
+	/**
+	 * Set Checkbox
+	 *
+	 * Let's you set the selected value of a checkbox via the value in the POST array.
+	 * If Form Validation is active it retrieves the info from the validation class
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	function set_checkbox($field, $value = '', $default = FALSE)
+	{
+		$CI =& get_instance();
+
+		if (isset($CI->form_validation) && is_object($CI->form_validation) && $CI->form_validation->has_rule($field))
+		{
+			return $CI->form_validation->set_checkbox($field, $value, $default);
+		}
+
+		// Form inputs are always strings ...
+		$value = (string) $value;
+		$input = $CI->input->post($field, FALSE);
+
+		if (is_array($input))
+		{
+			// Note: in_array('', array(0)) returns TRUE, do not use it
+			foreach ($input as &$v)
+			{
+				if ($value === $v)
+				{
+					return ' checked="checked"';
+				}
+			}
+
+			return '';
+		}
+
+		// Unchecked checkbox and radio inputs are not even submitted by browsers ...
+		if ($CI->input->method() === 'post')
+		{
+			return ($input === $value) ? ' checked="checked"' : '';
+		}
+
+		return ($default === TRUE) ? ' checked="checked"' : '';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_radio'))
+{
+	/**
+	 * Set Radio
+	 *
+	 * Let's you set the selected value of a radio field via info in the POST array.
+	 * If Form Validation is active it retrieves the info from the validation class
+	 *
+	 * @param	string	$field
+	 * @param	string	$value
+	 * @param	bool	$default
+	 * @return	string
+	 */
+	function set_radio($field, $value = '', $default = FALSE)
+	{
+		$CI =& get_instance();
+
+		if (isset($CI->form_validation) && is_object($CI->form_validation) && $CI->form_validation->has_rule($field))
+		{
+			return $CI->form_validation->set_radio($field, $value, $default);
+		}
+
+		// Form inputs are always strings ...
+		$value = (string) $value;
+		$input = $CI->input->post($field, FALSE);
+
+		if (is_array($input))
+		{
+			// Note: in_array('', array(0)) returns TRUE, do not use it
+			foreach ($input as &$v)
+			{
+				if ($value === $v)
+				{
+					return ' checked="checked"';
+				}
+			}
+
+			return '';
+		}
+
+		// Unchecked checkbox and radio inputs are not even submitted by browsers ...
+		if ($CI->input->method() === 'post')
+		{
+			return ($input === $value) ? ' checked="checked"' : '';
+		}
+
+		return ($default === TRUE) ? ' checked="checked"' : '';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('form_error'))
+{
+	/**
+	 * Form Error
+	 *
+	 * Returns the error for a specific form field. This is a helper for the
+	 * form validation class.
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	function form_error($field = '', $prefix = '', $suffix = '')
+	{
+		if (FALSE === ($OBJ =& _get_validation_object()))
+		{
+			return '';
+		}
+
+		return $OBJ->error($field, $prefix, $suffix);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('validation_errors'))
+{
+	/**
+	 * Validation Error String
+	 *
+	 * Returns all the errors associated with a form submission. This is a helper
+	 * function for the form validation class.
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	function validation_errors($prefix = '', $suffix = '')
+	{
+		if (FALSE === ($OBJ =& _get_validation_object()))
+		{
+			return '';
+		}
+
+		return $OBJ->error_string($prefix, $suffix);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_parse_form_attributes'))
+{
+	/**
+	 * Parse the form attributes
+	 *
+	 * Helper function used by some of the form helpers
+	 *
+	 * @param	array	$attributes	List of attributes
+	 * @param	array	$default	Default values
+	 * @return	string
+	 */
+	function _parse_form_attributes($attributes, $default)
+	{
+		if (is_array($attributes))
+		{
+			foreach ($default as $key => $val)
+			{
+				if (isset($attributes[$key]))
+				{
+					$default[$key] = $attributes[$key];
+					unset($attributes[$key]);
+				}
+			}
+
+			if (count($attributes) > 0)
+			{
+				$default = array_merge($default, $attributes);
+			}
+		}
+
+		$att = '';
+
+		foreach ($default as $key => $val)
+		{
+			if ($key === 'value')
+			{
+				$val = html_escape($val);
+			}
+			elseif ($key === 'name' && ! strlen($default['name']))
+			{
+				continue;
+			}
+
+			$att .= $key.'="'.$val.'" ';
+		}
+
+		return $att;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_attributes_to_string'))
+{
+	/**
+	 * Attributes To String
+	 *
+	 * Helper function used by some of the form helpers
+	 *
+	 * @param	mixed
+	 * @return	string
+	 */
+	function _attributes_to_string($attributes)
+	{
+		if (empty($attributes))
+		{
+			return '';
+		}
+
+		if (is_object($attributes))
+		{
+			$attributes = (array) $attributes;
+		}
+
+		if (is_array($attributes))
+		{
+			$atts = '';
+
+			foreach ($attributes as $key => $val)
+			{
+				$atts .= ' '.$key.'="'.$val.'"';
+			}
+
+			return $atts;
+		}
+
+		if (is_string($attributes))
+		{
+			return ' '.$attributes;
+		}
+
+		return FALSE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_get_validation_object'))
+{
+	/**
+	 * Validation Object
+	 *
+	 * Determines what the form validation class was instantiated as, fetches
+	 * the object and returns it.
+	 *
+	 * @return	mixed
+	 */
+	function &_get_validation_object()
+	{
+		$CI =& get_instance();
+
+		// We set this as a variable since we're returning by reference.
+		$return = FALSE;
+
+		if (FALSE !== ($object = $CI->load->is_loaded('Form_validation')))
+		{
+			if ( ! isset($CI->$object) OR ! is_object($CI->$object))
+			{
+				return $return;
+			}
+
+			return $CI->$object;
+		}
+
+		return $return;
+	}
+}
diff --git a/system/helpers/html_helper.php b/system/helpers/html_helper.php
new file mode 100644
index 00000000..531ae225
--- /dev/null
+++ b/system/helpers/html_helper.php
@@ -0,0 +1,391 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter HTML Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/html_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('heading'))
+{
+	/**
+	 * Heading
+	 *
+	 * Generates an HTML heading tag.
+	 *
+	 * @param	string	content
+	 * @param	int	heading level
+	 * @param	string
+	 * @return	string
+	 */
+	function heading($data = '', $h = '1', $attributes = '')
+	{
+		return '<h'.$h._stringify_attributes($attributes).'>'.$data.'</h'.$h.'>';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('ul'))
+{
+	/**
+	 * Unordered List
+	 *
+	 * Generates an HTML unordered list from an single or multi-dimensional array.
+	 *
+	 * @param	array
+	 * @param	mixed
+	 * @return	string
+	 */
+	function ul($list, $attributes = '')
+	{
+		return _list('ul', $list, $attributes);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('ol'))
+{
+	/**
+	 * Ordered List
+	 *
+	 * Generates an HTML ordered list from an single or multi-dimensional array.
+	 *
+	 * @param	array
+	 * @param	mixed
+	 * @return	string
+	 */
+	function ol($list, $attributes = '')
+	{
+		return _list('ol', $list, $attributes);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_list'))
+{
+	/**
+	 * Generates the list
+	 *
+	 * Generates an HTML ordered list from an single or multi-dimensional array.
+	 *
+	 * @param	string
+	 * @param	mixed
+	 * @param	mixed
+	 * @param	int
+	 * @return	string
+	 */
+	function _list($type = 'ul', $list = array(), $attributes = '', $depth = 0)
+	{
+		// If an array wasn't submitted there's nothing to do...
+		if ( ! is_array($list))
+		{
+			return $list;
+		}
+
+		// Set the indentation based on the depth
+		$out = str_repeat(' ', $depth)
+			// Write the opening list tag
+			.'<'.$type._stringify_attributes($attributes).">\n";
+
+
+		// Cycle through the list elements.  If an array is
+		// encountered we will recursively call _list()
+
+		static $_last_list_item = '';
+		foreach ($list as $key => $val)
+		{
+			$_last_list_item = $key;
+
+			$out .= str_repeat(' ', $depth + 2).'<li>';
+
+			if ( ! is_array($val))
+			{
+				$out .= $val;
+			}
+			else
+			{
+				$out .= $_last_list_item."\n"._list($type, $val, '', $depth + 4).str_repeat(' ', $depth + 2);
+			}
+
+			$out .= "</li>\n";
+		}
+
+		// Set the indentation for the closing tag and apply it
+		return $out.str_repeat(' ', $depth).'</'.$type.">\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('img'))
+{
+	/**
+	 * Image
+	 *
+	 * Generates an <img /> element
+	 *
+	 * @param	mixed
+	 * @param	bool
+	 * @param	mixed
+	 * @return	string
+	 */
+	function img($src = '', $index_page = FALSE, $attributes = '')
+	{
+		if ( ! is_array($src) )
+		{
+			$src = array('src' => $src);
+		}
+
+		// If there is no alt attribute defined, set it to an empty string
+		if ( ! isset($src['alt']))
+		{
+			$src['alt'] = '';
+		}
+
+		$img = '<img';
+
+		foreach ($src as $k => $v)
+		{
+			if ($k === 'src' && ! preg_match('#^(data:[a-z,;])|(([a-z]+:)?(?<!data:)//)#i', $v))
+			{
+				if ($index_page === TRUE)
+				{
+					$img .= ' src="'.get_instance()->config->site_url($v).'"';
+				}
+				else
+				{
+					$img .= ' src="'.get_instance()->config->base_url($v).'"';
+				}
+			}
+			else
+			{
+				$img .= ' '.$k.'="'.$v.'"';
+			}
+		}
+
+		return $img._stringify_attributes($attributes).' />';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('doctype'))
+{
+	/**
+	 * Doctype
+	 *
+	 * Generates a page document type declaration
+	 *
+	 * Examples of valid options: html5, xhtml-11, xhtml-strict, xhtml-trans,
+	 * xhtml-frame, html4-strict, html4-trans, and html4-frame.
+	 * All values are saved in the doctypes config file.
+	 *
+	 * @param	string	type	The doctype to be generated
+	 * @return	string
+	 */
+	function doctype($type = 'html5')
+	{
+		static $doctypes;
+
+		if ( ! is_array($doctypes))
+		{
+			if (file_exists(APPPATH.'config/doctypes.php'))
+			{
+				include(APPPATH.'config/doctypes.php');
+			}
+
+			if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/doctypes.php'))
+			{
+				include(APPPATH.'config/'.ENVIRONMENT.'/doctypes.php');
+			}
+
+			if (empty($_doctypes) OR ! is_array($_doctypes))
+			{
+				$doctypes = array();
+				return FALSE;
+			}
+
+			$doctypes = $_doctypes;
+		}
+
+		return isset($doctypes[$type]) ? $doctypes[$type] : FALSE;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('link_tag'))
+{
+	/**
+	 * Link
+	 *
+	 * Generates link to a CSS file
+	 *
+	 * @param	mixed	stylesheet hrefs or an array
+	 * @param	string	rel
+	 * @param	string	type
+	 * @param	string	title
+	 * @param	string	media
+	 * @param	bool	should index_page be added to the css path
+	 * @return	string
+	 */
+	function link_tag($href = '', $rel = 'stylesheet', $type = 'text/css', $title = '', $media = '', $index_page = FALSE)
+	{
+		$CI =& get_instance();
+		$link = '<link ';
+
+		if (is_array($href))
+		{
+			foreach ($href as $k => $v)
+			{
+				if ($k === 'href' && ! preg_match('#^([a-z]+:)?//#i', $v))
+				{
+					if ($index_page === TRUE)
+					{
+						$link .= 'href="'.$CI->config->site_url($v).'" ';
+					}
+					else
+					{
+						$link .= 'href="'.$CI->config->base_url($v).'" ';
+					}
+				}
+				else
+				{
+					$link .= $k.'="'.$v.'" ';
+				}
+			}
+		}
+		else
+		{
+			if (preg_match('#^([a-z]+:)?//#i', $href))
+			{
+				$link .= 'href="'.$href.'" ';
+			}
+			elseif ($index_page === TRUE)
+			{
+				$link .= 'href="'.$CI->config->site_url($href).'" ';
+			}
+			else
+			{
+				$link .= 'href="'.$CI->config->base_url($href).'" ';
+			}
+
+			$link .= 'rel="'.$rel.'" type="'.$type.'" ';
+
+			if ($media !== '')
+			{
+				$link .= 'media="'.$media.'" ';
+			}
+
+			if ($title !== '')
+			{
+				$link .= 'title="'.$title.'" ';
+			}
+		}
+
+		return $link."/>\n";
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('meta'))
+{
+	/**
+	 * Generates meta tags from an array of key/values
+	 *
+	 * @param	array
+	 * @param	string
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	function meta($name = '', $content = '', $type = 'name', $newline = "\n")
+	{
+		// Since we allow the data to be passes as a string, a simple array
+		// or a multidimensional one, we need to do a little prepping.
+		if ( ! is_array($name))
+		{
+			$name = array(array('name' => $name, 'content' => $content, 'type' => $type, 'newline' => $newline));
+		}
+		elseif (isset($name['name']))
+		{
+			// Turn single array into multidimensional
+			$name = array($name);
+		}
+
+		$allowed_types = array('charset', 'http-equiv', 'name', 'property');
+		$str = '';
+		foreach ($name as $meta)
+		{
+			// This is to preserve BC with pre-3.1 versions where only
+			// 'http-equiv' (default) and 'name' were supported.
+			if (isset($meta['type']))
+			{
+				if ($meta['type'] === 'equiv')
+				{
+					$meta['type'] = 'http-equiv';
+				}
+				elseif ( ! in_array($meta['type'], $allowed_types, TRUE))
+				{
+					$meta['type'] = 'name';
+				}
+			}
+
+			$type    = isset($meta['type'])    ? $meta['type']    : 'name';
+			$name    = isset($meta['name'])    ? $meta['name']    : '';
+			$content = isset($meta['content']) ? $meta['content'] : '';
+			$newline = isset($meta['newline']) ? $meta['newline'] : "\n";
+
+			$str .= '<meta '.$type.'="'.$name.($type === 'charset' ? '' : '" content="'.$content).'" />'.$newline;
+		}
+
+		return $str;
+	}
+}
diff --git a/system/helpers/index.html b/system/helpers/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/helpers/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/helpers/inflector_helper.php b/system/helpers/inflector_helper.php
new file mode 100644
index 00000000..b7f472bc
--- /dev/null
+++ b/system/helpers/inflector_helper.php
@@ -0,0 +1,326 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Inflector Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/inflector_helper.html
+ */
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('singular'))
+{
+	/**
+	 * Singular
+	 *
+	 * Takes a plural word and makes it singular
+	 *
+	 * @param	string	$str	Input string
+	 * @return	string
+	 */
+	function singular($str)
+	{
+		$result = strval($str);
+
+		if ( ! word_is_countable($result))
+		{
+			return $result;
+		}
+
+		$singular_rules = array(
+			'/(matr)ices$/'		=> '\1ix',
+			'/(vert|ind)ices$/'	=> '\1ex',
+			'/^(ox)en/'		=> '\1',
+			'/(alias)es$/'		=> '\1',
+			'/([octop|vir])i$/'	=> '\1us',
+			'/(cris|ax|test)es$/'	=> '\1is',
+			'/(shoe)s$/'		=> '\1',
+			'/(o)es$/'		=> '\1',
+			'/(bus|campus)es$/'	=> '\1',
+			'/([m|l])ice$/'		=> '\1ouse',
+			'/(x|ch|ss|sh)es$/'	=> '\1',
+			'/(m)ovies$/'		=> '\1\2ovie',
+			'/(s)eries$/'		=> '\1\2eries',
+			'/([^aeiouy]|qu)ies$/'	=> '\1y',
+			'/([lr])ves$/'		=> '\1f',
+			'/(tive)s$/'		=> '\1',
+			'/(hive)s$/'		=> '\1',
+			'/([^f])ves$/'		=> '\1fe',
+			'/(^analy)ses$/'	=> '\1sis',
+			'/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$/' => '\1\2sis',
+			'/([ti])a$/'		=> '\1um',
+			'/(p)eople$/'		=> '\1\2erson',
+			'/(m)en$/'		=> '\1an',
+			'/(s)tatuses$/'		=> '\1\2tatus',
+			'/(c)hildren$/'		=> '\1\2hild',
+			'/(n)ews$/'		=> '\1\2ews',
+			'/(quiz)zes$/'		=> '\1',
+			'/([^us])s$/'		=> '\1'
+		);
+
+		foreach ($singular_rules as $rule => $replacement)
+		{
+			if (preg_match($rule, $result))
+			{
+				$result = preg_replace($rule, $replacement, $result);
+				break;
+			}
+		}
+
+		return $result;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('plural'))
+{
+	/**
+	 * Plural
+	 *
+	 * Takes a singular word and makes it plural
+	 *
+	 * @param	string	$str	Input string
+	 * @return	string
+	 */
+	function plural($str)
+	{
+		$result = strval($str);
+
+		if ( ! word_is_countable($result))
+		{
+			return $result;
+		}
+
+		$plural_rules = array(
+			'/(quiz)$/'                => '\1zes',      // quizzes
+			'/^(ox)$/'                 => '\1\2en',     // ox
+			'/([m|l])ouse$/'           => '\1ice',      // mouse, louse
+			'/(matr|vert|ind)ix|ex$/'  => '\1ices',     // matrix, vertex, index
+			'/(x|ch|ss|sh)$/'          => '\1es',       // search, switch, fix, box, process, address
+			'/([^aeiouy]|qu)y$/'       => '\1ies',      // query, ability, agency
+			'/(hive)$/'                => '\1s',        // archive, hive
+			'/(?:([^f])fe|([lr])f)$/'  => '\1\2ves',    // half, safe, wife
+			'/sis$/'                   => 'ses',        // basis, diagnosis
+			'/([ti])um$/'              => '\1a',        // datum, medium
+			'/(p)erson$/'              => '\1eople',    // person, salesperson
+			'/(m)an$/'                 => '\1en',       // man, woman, spokesman
+			'/(c)hild$/'               => '\1hildren',  // child
+			'/(buffal|tomat)o$/'       => '\1\2oes',    // buffalo, tomato
+			'/(bu|campu)s$/'           => '\1\2ses',    // bus, campus
+			'/(alias|status|virus)$/'  => '\1es',       // alias
+			'/(octop)us$/'             => '\1i',        // octopus
+			'/(ax|cris|test)is$/'      => '\1es',       // axis, crisis
+			'/s$/'                     => 's',          // no change (compatibility)
+			'/$/'                      => 's',
+		);
+
+		foreach ($plural_rules as $rule => $replacement)
+		{
+			if (preg_match($rule, $result))
+			{
+				$result = preg_replace($rule, $replacement, $result);
+				break;
+			}
+		}
+
+		return $result;
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('camelize'))
+{
+	/**
+	 * Camelize
+	 *
+	 * Takes multiple words separated by spaces or underscores and camelizes them
+	 *
+	 * @param	string	$str	Input string
+	 * @return	string
+	 */
+	function camelize($str)
+	{
+		return strtolower($str[0]).substr(str_replace(' ', '', ucwords(preg_replace('/[\s_]+/', ' ', $str))), 1);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('underscore'))
+{
+	/**
+	 * Underscore
+	 *
+	 * Takes multiple words separated by spaces and underscores them
+	 *
+	 * @param	string	$str	Input string
+	 * @return	string
+	 */
+	function underscore($str)
+	{
+		return preg_replace('/[\s]+/', '_', trim(MB_ENABLED ? mb_strtolower($str) : strtolower($str)));
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('humanize'))
+{
+	/**
+	 * Humanize
+	 *
+	 * Takes multiple words separated by the separator and changes them to spaces
+	 *
+	 * @param	string	$str		Input string
+	 * @param 	string	$separator	Input separator
+	 * @return	string
+	 */
+	function humanize($str, $separator = '_')
+	{
+		return ucwords(preg_replace('/['.preg_quote($separator).']+/', ' ', trim(MB_ENABLED ? mb_strtolower($str) : strtolower($str))));
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('word_is_countable'))
+{
+	/**
+	 * Checks if the given word has a plural version.
+	 *
+	 * @param	string	$word	Word to check
+	 * @return	bool
+	 */
+	function word_is_countable($word)
+	{
+		return ! in_array(
+			strtolower($word),
+			array(
+				'audio',
+				'bison',
+				'chassis',
+				'compensation',
+				'coreopsis',
+				'data',
+				'deer',
+				'education',
+				'emoji',
+				'equipment',
+				'fish',
+				'furniture',
+				'gold',
+				'information',
+				'knowledge',
+				'love',
+				'rain',
+				'money',
+				'moose',
+				'nutrition',
+				'offspring',
+				'plankton',
+				'pokemon',
+				'police',
+				'rice',
+				'series',
+				'sheep',
+				'species',
+				'swine',
+				'traffic',
+				'wheat'
+			)
+		);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('is_countable'))
+{
+	function is_countable($word)
+	{
+		trigger_error('is_countable() is a native PHP function since version 7.3.0; use word_is_countable() instead', E_USER_WARNING);
+		return word_is_countable($word);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('ordinal_format'))
+{
+	/**
+	 * Returns the English ordinal numeral for a given number
+	 *
+	 * @param  int    $number
+	 * @return string
+	 */
+	function ordinal_format($number)
+	{
+		if ( ! ctype_digit((string) $number) OR $number < 1)
+		{
+			return $number;
+		}
+
+		$last_digit = array(
+			0 => 'th',
+			1 => 'st',
+			2 => 'nd',
+			3 => 'rd',
+			4 => 'th',
+			5 => 'th',
+			6 => 'th',
+			7 => 'th',
+			8 => 'th',
+			9 => 'th'
+		);
+
+		if (($number % 100) >= 11 && ($number % 100) <= 13)
+		{
+			return $number.'th';
+		}
+
+		return $number.$last_digit[$number % 10];
+	}
+}
diff --git a/system/helpers/language_helper.php b/system/helpers/language_helper.php
new file mode 100644
index 00000000..dff6a6b2
--- /dev/null
+++ b/system/helpers/language_helper.php
@@ -0,0 +1,75 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Language Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/language_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('lang'))
+{
+	/**
+	 * Lang
+	 *
+	 * Fetches a language variable and optionally outputs a form label
+	 *
+	 * @param	string	$line		The language line
+	 * @param	string	$for		The "for" value (id of the form element)
+	 * @param	array	$attributes	Any additional HTML attributes
+	 * @return	string
+	 */
+	function lang($line, $for = '', $attributes = array())
+	{
+		$line = get_instance()->lang->line($line);
+
+		if ($for !== '')
+		{
+			$line = '<label for="'.$for.'"'._stringify_attributes($attributes).'>'.$line.'</label>';
+		}
+
+		return $line;
+	}
+}
diff --git a/system/helpers/number_helper.php b/system/helpers/number_helper.php
new file mode 100644
index 00000000..55fa1e5a
--- /dev/null
+++ b/system/helpers/number_helper.php
@@ -0,0 +1,94 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Number Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/number_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('byte_format'))
+{
+	/**
+	 * Formats a numbers as bytes, based on size, and adds the appropriate suffix
+	 *
+	 * @param	mixed	will be cast as int
+	 * @param	int
+	 * @return	string
+	 */
+	function byte_format($num, $precision = 1)
+	{
+		$CI =& get_instance();
+		$CI->lang->load('number');
+
+		if ($num >= 1000000000000)
+		{
+			$num = round($num / 1099511627776, $precision);
+			$unit = $CI->lang->line('terabyte_abbr');
+		}
+		elseif ($num >= 1000000000)
+		{
+			$num = round($num / 1073741824, $precision);
+			$unit = $CI->lang->line('gigabyte_abbr');
+		}
+		elseif ($num >= 1000000)
+		{
+			$num = round($num / 1048576, $precision);
+			$unit = $CI->lang->line('megabyte_abbr');
+		}
+		elseif ($num >= 1000)
+		{
+			$num = round($num / 1024, $precision);
+			$unit = $CI->lang->line('kilobyte_abbr');
+		}
+		else
+		{
+			$unit = $CI->lang->line('bytes');
+			return number_format($num).' '.$unit;
+		}
+
+		return number_format($num, $precision).' '.$unit;
+	}
+}
diff --git a/system/helpers/path_helper.php b/system/helpers/path_helper.php
new file mode 100644
index 00000000..47d10c2f
--- /dev/null
+++ b/system/helpers/path_helper.php
@@ -0,0 +1,82 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Path Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/path_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('set_realpath'))
+{
+	/**
+	 * Set Realpath
+	 *
+	 * @param	string
+	 * @param	bool	checks to see if the path exists
+	 * @return	string
+	 */
+	function set_realpath($path, $check_existance = FALSE)
+	{
+		// Security check to make sure the path is NOT a URL. No remote file inclusion!
+		if (preg_match('#^(http:\/\/|https:\/\/|www\.|ftp|php:\/\/)#i', $path) OR filter_var($path, FILTER_VALIDATE_IP) === $path)
+		{
+			show_error('The path you submitted must be a local server path, not a URL');
+		}
+
+		// Resolve the path
+		if (realpath($path) !== FALSE)
+		{
+			$path = realpath($path);
+		}
+		elseif ($check_existance && ! is_dir($path) && ! is_file($path))
+		{
+			show_error('Not a valid path: '.$path);
+		}
+
+		// Add a trailing slash, if this is a directory
+		return is_dir($path) ? rtrim($path, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR : $path;
+	}
+}
diff --git a/system/helpers/security_helper.php b/system/helpers/security_helper.php
new file mode 100644
index 00000000..f6dbafec
--- /dev/null
+++ b/system/helpers/security_helper.php
@@ -0,0 +1,113 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Security Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/security_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('xss_clean'))
+{
+	/**
+	 * XSS Filtering
+	 *
+	 * @param	string
+	 * @param	bool	whether or not the content is an image file
+	 * @return	string
+	 */
+	function xss_clean($str, $is_image = FALSE)
+	{
+		return get_instance()->security->xss_clean($str, $is_image);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('sanitize_filename'))
+{
+	/**
+	 * Sanitize Filename
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function sanitize_filename($filename)
+	{
+		return get_instance()->security->sanitize_filename($filename);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('strip_image_tags'))
+{
+	/**
+	 * Strip Image Tags
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function strip_image_tags($str)
+	{
+		return get_instance()->security->strip_image_tags($str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('encode_php_tags'))
+{
+	/**
+	 * Convert PHP tags to entities
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function encode_php_tags($str)
+	{
+		return str_replace(array('<?', '?>'), array('&lt;?', '?&gt;'), $str);
+	}
+}
diff --git a/system/helpers/string_helper.php b/system/helpers/string_helper.php
new file mode 100644
index 00000000..3a05525d
--- /dev/null
+++ b/system/helpers/string_helper.php
@@ -0,0 +1,257 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter String Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/string_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('strip_slashes'))
+{
+	/**
+	 * Strip Slashes
+	 *
+	 * Removes slashes contained in a string or in an array
+	 *
+	 * @param	mixed	string or array
+	 * @return	mixed	string or array
+	 */
+	function strip_slashes($str)
+	{
+		if ( ! is_array($str))
+		{
+			return stripslashes($str);
+		}
+
+		foreach ($str as $key => $val)
+		{
+			$str[$key] = strip_slashes($val);
+		}
+
+		return $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('strip_quotes'))
+{
+	/**
+	 * Strip Quotes
+	 *
+	 * Removes single and double quotes from a string
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function strip_quotes($str)
+	{
+		return str_replace(array('"', "'"), '', $str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('quotes_to_entities'))
+{
+	/**
+	 * Quotes to Entities
+	 *
+	 * Converts single and double quotes to entities
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function quotes_to_entities($str)
+	{
+		return str_replace(array("\'","\"","'",'"'), array("&#39;","&quot;","&#39;","&quot;"), $str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('reduce_double_slashes'))
+{
+	/**
+	 * Reduce Double Slashes
+	 *
+	 * Converts double slashes in a string to a single slash,
+	 * except those found in http://
+	 *
+	 * http://www.some-site.com//index.php
+	 *
+	 * becomes:
+	 *
+	 * http://www.some-site.com/index.php
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function reduce_double_slashes($str)
+	{
+		return preg_replace('#(^|[^:])//+#', '\\1/', $str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('reduce_multiples'))
+{
+	/**
+	 * Reduce Multiples
+	 *
+	 * Reduces multiple instances of a particular character.  Example:
+	 *
+	 * Fred, Bill,, Joe, Jimmy
+	 *
+	 * becomes:
+	 *
+	 * Fred, Bill, Joe, Jimmy
+	 *
+	 * @param	string
+	 * @param	string	the character you wish to reduce
+	 * @param	bool	TRUE/FALSE - whether to trim the character from the beginning/end
+	 * @return	string
+	 */
+	function reduce_multiples($str, $character = ',', $trim = FALSE)
+	{
+		$str = preg_replace('#'.preg_quote($character, '#').'{2,}#', $character, $str);
+		return ($trim === TRUE) ? trim($str, $character) : $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('random_string'))
+{
+	/**
+	 * Create a "Random" String
+	 *
+	 * @param	string	type of random string.  basic, alpha, alnum, numeric, nozero, unique, md5, encrypt and sha1
+	 * @param	int	number of characters
+	 * @return	string
+	 */
+	function random_string($type = 'alnum', $len = 8)
+	{
+		switch ($type)
+		{
+			case 'basic':
+				return mt_rand();
+			case 'alnum':
+			case 'numeric':
+			case 'nozero':
+			case 'alpha':
+				switch ($type)
+				{
+					case 'alpha':
+						$pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+						break;
+					case 'alnum':
+						$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+						break;
+					case 'numeric':
+						$pool = '0123456789';
+						break;
+					case 'nozero':
+						$pool = '123456789';
+						break;
+				}
+				return substr(str_shuffle(str_repeat($pool, ceil($len / strlen($pool)))), 0, $len);
+			case 'unique': // todo: remove in 3.1+
+			case 'md5':
+				return md5(uniqid(mt_rand()));
+			case 'encrypt': // todo: remove in 3.1+
+			case 'sha1':
+				return sha1(uniqid(mt_rand(), TRUE));
+		}
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('increment_string'))
+{
+	/**
+	 * Add's _1 to a string or increment the ending number to allow _2, _3, etc
+	 *
+	 * @param	string	required
+	 * @param	string	What should the duplicate number be appended with
+	 * @param	string	Which number should be used for the first dupe increment
+	 * @return	string
+	 */
+	function increment_string($str, $separator = '_', $first = 1)
+	{
+		preg_match('/(.+)'.preg_quote($separator, '/').'([0-9]+)$/', $str, $match);
+		return isset($match[2]) ? $match[1].$separator.($match[2] + 1) : $str.$separator.$first;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('alternator'))
+{
+	/**
+	 * Alternator
+	 *
+	 * Allows strings to be alternated. See docs...
+	 *
+	 * @param	string (as many parameters as needed)
+	 * @return	string
+	 */
+	function alternator()
+	{
+		static $i;
+
+		if (func_num_args() === 0)
+		{
+			$i = 0;
+			return '';
+		}
+
+		$args = func_get_args();
+		return $args[($i++ % count($args))];
+	}
+}
diff --git a/system/helpers/text_helper.php b/system/helpers/text_helper.php
new file mode 100644
index 00000000..5d5a958e
--- /dev/null
+++ b/system/helpers/text_helper.php
@@ -0,0 +1,567 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Text Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/text_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('word_limiter'))
+{
+	/**
+	 * Word Limiter
+	 *
+	 * Limits a string to X number of words.
+	 *
+	 * @param	string
+	 * @param	int
+	 * @param	string	the end character. Usually an ellipsis
+	 * @return	string
+	 */
+	function word_limiter($str, $limit = 100, $end_char = '&#8230;')
+	{
+		if (trim($str) === '')
+		{
+			return $str;
+		}
+
+		preg_match('/^\s*+(?:\S++\s*+){1,'.(int) $limit.'}/', $str, $matches);
+
+		if (strlen($str) === strlen($matches[0]))
+		{
+			$end_char = '';
+		}
+
+		return rtrim($matches[0]).$end_char;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('character_limiter'))
+{
+	/**
+	 * Character Limiter
+	 *
+	 * Limits the string based on the character count.  Preserves complete words
+	 * so the character count may not be exactly as specified.
+	 *
+	 * @param	string
+	 * @param	int
+	 * @param	string	the end character. Usually an ellipsis
+	 * @return	string
+	 */
+	function character_limiter($str, $n = 500, $end_char = '&#8230;')
+	{
+		if (mb_strlen($str) < $n)
+		{
+			return $str;
+		}
+
+		// a bit complicated, but faster than preg_replace with \s+
+		$str = preg_replace('/ {2,}/', ' ', str_replace(array("\r", "\n", "\t", "\v", "\f"), ' ', $str));
+
+		if (mb_strlen($str) <= $n)
+		{
+			return $str;
+		}
+
+		$out = '';
+		foreach (explode(' ', trim($str)) as $val)
+		{
+			$out .= $val.' ';
+
+			if (mb_strlen($out) >= $n)
+			{
+				$out = trim($out);
+				return (mb_strlen($out) === mb_strlen($str)) ? $out : $out.$end_char;
+			}
+		}
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('ascii_to_entities'))
+{
+	/**
+	 * High ASCII to Entities
+	 *
+	 * Converts high ASCII text and MS Word special characters to character entities
+	 *
+	 * @param	string	$str
+	 * @return	string
+	 */
+	function ascii_to_entities($str)
+	{
+		$out = '';
+		$length = defined('MB_OVERLOAD_STRING')
+			? mb_strlen($str, '8bit') - 1
+			: strlen($str) - 1;
+		for ($i = 0, $count = 1, $temp = array(); $i <= $length; $i++)
+		{
+			$ordinal = ord($str[$i]);
+
+			if ($ordinal < 128)
+			{
+				/*
+					If the $temp array has a value but we have moved on, then it seems only
+					fair that we output that entity and restart $temp before continuing. -Paul
+				*/
+				if (count($temp) === 1)
+				{
+					$out .= '&#'.array_shift($temp).';';
+					$count = 1;
+				}
+
+				$out .= $str[$i];
+			}
+			else
+			{
+				if (count($temp) === 0)
+				{
+					$count = ($ordinal < 224) ? 2 : 3;
+				}
+
+				$temp[] = $ordinal;
+
+				if (count($temp) === $count)
+				{
+					$number = ($count === 3)
+						? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64)
+						: (($temp[0] % 32) * 64) + ($temp[1] % 64);
+
+					$out .= '&#'.$number.';';
+					$count = 1;
+					$temp = array();
+				}
+				// If this is the last iteration, just output whatever we have
+				elseif ($i === $length)
+				{
+					$out .= '&#'.implode(';', $temp).';';
+				}
+			}
+		}
+
+		return $out;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('entities_to_ascii'))
+{
+	/**
+	 * Entities to ASCII
+	 *
+	 * Converts character entities back to ASCII
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	function entities_to_ascii($str, $all = TRUE)
+	{
+		if (preg_match_all('/\&#(\d+)\;/', $str, $matches))
+		{
+			for ($i = 0, $s = count($matches[0]); $i < $s; $i++)
+			{
+				$digits = $matches[1][$i];
+				$out = '';
+
+				if ($digits < 128)
+				{
+					$out .= chr($digits);
+
+				}
+				elseif ($digits < 2048)
+				{
+					$out .= chr(192 + (($digits - ($digits % 64)) / 64)).chr(128 + ($digits % 64));
+				}
+				else
+				{
+					$out .= chr(224 + (($digits - ($digits % 4096)) / 4096))
+						.chr(128 + ((($digits % 4096) - ($digits % 64)) / 64))
+						.chr(128 + ($digits % 64));
+				}
+
+				$str = str_replace($matches[0][$i], $out, $str);
+			}
+		}
+
+		if ($all)
+		{
+			return str_replace(
+				array('&amp;', '&lt;', '&gt;', '&quot;', '&apos;', '&#45;'),
+				array('&', '<', '>', '"', "'", '-'),
+				$str
+			);
+		}
+
+		return $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('word_censor'))
+{
+	/**
+	 * Word Censoring Function
+	 *
+	 * Supply a string and an array of disallowed words and any
+	 * matched words will be converted to #### or to the replacement
+	 * word you've submitted.
+	 *
+	 * @param	string	the text string
+	 * @param	string	the array of censored words
+	 * @param	string	the optional replacement value
+	 * @return	string
+	 */
+	function word_censor($str, $censored, $replacement = '')
+	{
+		if ( ! is_array($censored))
+		{
+			return $str;
+		}
+
+		$str = ' '.$str.' ';
+
+		// \w, \b and a few others do not match on a unicode character
+		// set for performance reasons. As a result words like über
+		// will not match on a word boundary. Instead, we'll assume that
+		// a bad word will be bookeneded by any of these characters.
+		$delim = '[-_\'\"`(){}<>\[\]|!?@#%&,.:;^~*+=\/ 0-9\n\r\t]';
+
+		foreach ($censored as $badword)
+		{
+			$badword = str_replace('\*', '\w*?', preg_quote($badword, '/'));
+			if ($replacement !== '')
+			{
+				$str = preg_replace(
+					"/({$delim})(".$badword.")({$delim})/i",
+					"\\1{$replacement}\\3",
+					$str
+				);
+			}
+			elseif (preg_match_all("/{$delim}(".$badword."){$delim}/i", $str, $matches, PREG_PATTERN_ORDER | PREG_OFFSET_CAPTURE))
+			{
+				$matches = $matches[1];
+				for ($i = count($matches) - 1; $i >= 0; $i--)
+				{
+					$length = strlen($matches[$i][0]);
+					$str = substr_replace(
+						$str,
+						str_repeat('#', $length),
+						$matches[$i][1],
+						$length
+					);
+				}
+			}
+		}
+
+		return trim($str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('highlight_code'))
+{
+	/**
+	 * Code Highlighter
+	 *
+	 * Colorizes code strings
+	 *
+	 * @param	string	the text string
+	 * @return	string
+	 */
+	function highlight_code($str)
+	{
+		/* The highlight string function encodes and highlights
+		 * brackets so we need them to start raw.
+		 *
+		 * Also replace any existing PHP tags to temporary markers
+		 * so they don't accidentally break the string out of PHP,
+		 * and thus, thwart the highlighting.
+		 */
+		$str = str_replace(
+			array('&lt;', '&gt;', '<?', '?>', '<%', '%>', '\\', '</script>'),
+			array('<', '>', 'phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'),
+			$str
+		);
+
+		// The highlight_string function requires that the text be surrounded
+		// by PHP tags, which we will remove later
+		$str = highlight_string('<?php '.$str.' ?>', TRUE);
+
+		// Remove our artificially added PHP, and the syntax highlighting that came with it
+		$str = preg_replace(
+			array(
+				'/<span style="color: #([A-Z0-9]+)">&lt;\?php(&nbsp;| )/i',
+				'/(<span style="color: #[A-Z0-9]+">.*?)\?&gt;<\/span>\n<\/span>\n<\/code>/is',
+				'/<span style="color: #[A-Z0-9]+"\><\/span>/i'
+			),
+			array(
+				'<span style="color: #$1">',
+				"$1</span>\n</span>\n</code>",
+				''
+			),
+			$str
+		);
+
+		// Replace our markers back to PHP tags.
+		return str_replace(
+			array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'),
+			array('&lt;?', '?&gt;', '&lt;%', '%&gt;', '\\', '&lt;/script&gt;'),
+			$str
+		);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('highlight_phrase'))
+{
+	/**
+	 * Phrase Highlighter
+	 *
+	 * Highlights a phrase within a text string
+	 *
+	 * @param	string	$str		the text string
+	 * @param	string	$phrase		the phrase you'd like to highlight
+	 * @param	string	$tag_open	the openging tag to precede the phrase with
+	 * @param	string	$tag_close	the closing tag to end the phrase with
+	 * @return	string
+	 */
+	function highlight_phrase($str, $phrase, $tag_open = '<mark>', $tag_close = '</mark>')
+	{
+		return ($str !== '' && $phrase !== '')
+			? preg_replace('/('.preg_quote($phrase, '/').')/i'.(UTF8_ENABLED ? 'u' : ''), $tag_open.'\\1'.$tag_close, $str)
+			: $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('convert_accented_characters'))
+{
+	/**
+	 * Convert Accented Foreign Characters to ASCII
+	 *
+	 * @param	string	$str	Input string
+	 * @return	string
+	 */
+	function convert_accented_characters($str)
+	{
+		static $array_from, $array_to;
+
+		if ( ! is_array($array_from))
+		{
+			if (file_exists(APPPATH.'config/foreign_chars.php'))
+			{
+				include(APPPATH.'config/foreign_chars.php');
+			}
+
+			if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php'))
+			{
+				include(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php');
+			}
+
+			if (empty($foreign_characters) OR ! is_array($foreign_characters))
+			{
+				$array_from = array();
+				$array_to = array();
+
+				return $str;
+			}
+
+			$array_from = array_keys($foreign_characters);
+			$array_to = array_values($foreign_characters);
+		}
+
+		return preg_replace($array_from, $array_to, $str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('word_wrap'))
+{
+	/**
+	 * Word Wrap
+	 *
+	 * Wraps text at the specified character. Maintains the integrity of words.
+	 * Anything placed between {unwrap}{/unwrap} will not be word wrapped, nor
+	 * will URLs.
+	 *
+	 * @param	string	$str		the text string
+	 * @param	int	$charlim = 76	the number of characters to wrap at
+	 * @return	string
+	 */
+	function word_wrap($str, $charlim = 76)
+	{
+		// Set the character limit
+		is_numeric($charlim) OR $charlim = 76;
+
+		// Reduce multiple spaces
+		$str = preg_replace('| +|', ' ', $str);
+
+		// Standardize newlines
+		if (strpos($str, "\r") !== FALSE)
+		{
+			$str = str_replace(array("\r\n", "\r"), "\n", $str);
+		}
+
+		// If the current word is surrounded by {unwrap} tags we'll
+		// strip the entire chunk and replace it with a marker.
+		$unwrap = array();
+		if (preg_match_all('|\{unwrap\}(.+?)\{/unwrap\}|s', $str, $matches))
+		{
+			for ($i = 0, $c = count($matches[0]); $i < $c; $i++)
+			{
+				$unwrap[] = $matches[1][$i];
+				$str = str_replace($matches[0][$i], '{{unwrapped'.$i.'}}', $str);
+			}
+		}
+
+		// Use PHP's native function to do the initial wordwrap.
+		// We set the cut flag to FALSE so that any individual words that are
+		// too long get left alone. In the next step we'll deal with them.
+		$str = wordwrap($str, $charlim, "\n", FALSE);
+
+		// Split the string into individual lines of text and cycle through them
+		$output = '';
+		foreach (explode("\n", $str) as $line)
+		{
+			// Is the line within the allowed character count?
+			// If so we'll join it to the output and continue
+			if (mb_strlen($line) <= $charlim)
+			{
+				$output .= $line."\n";
+				continue;
+			}
+
+			$temp = '';
+			while (mb_strlen($line) > $charlim)
+			{
+				// If the over-length word is a URL we won't wrap it
+				if (preg_match('!\[url.+\]|://|www\.!', $line))
+				{
+					break;
+				}
+
+				// Trim the word down
+				$temp .= mb_substr($line, 0, $charlim - 1);
+				$line = mb_substr($line, $charlim - 1);
+			}
+
+			// If $temp contains data it means we had to split up an over-length
+			// word into smaller chunks so we'll add it back to our current line
+			if ($temp !== '')
+			{
+				$output .= $temp."\n".$line."\n";
+			}
+			else
+			{
+				$output .= $line."\n";
+			}
+		}
+
+		// Put our markers back
+		if (count($unwrap) > 0)
+		{
+			foreach ($unwrap as $key => $val)
+			{
+				$output = str_replace('{{unwrapped'.$key.'}}', $val, $output);
+			}
+		}
+
+		return $output;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('ellipsize'))
+{
+	/**
+	 * Ellipsize String
+	 *
+	 * This function will strip tags from a string, split it at its max_length and ellipsize
+	 *
+	 * @param	string	string to ellipsize
+	 * @param	int	max length of string
+	 * @param	mixed	int (1|0) or float, .5, .2, etc for position to split
+	 * @param	string	ellipsis ; Default '...'
+	 * @return	string	ellipsized string
+	 */
+	function ellipsize($str, $max_length, $position = 1, $ellipsis = '&hellip;')
+	{
+		// Strip tags
+		$str = trim(strip_tags($str));
+
+		// Is the string long enough to ellipsize?
+		if (mb_strlen($str) <= $max_length)
+		{
+			return $str;
+		}
+
+		$beg = mb_substr($str, 0, floor($max_length * $position));
+		$position = ($position > 1) ? 1 : $position;
+
+		if ($position === 1)
+		{
+			$end = mb_substr($str, 0, -($max_length - mb_strlen($beg)));
+		}
+		else
+		{
+			$end = mb_substr($str, -($max_length - mb_strlen($beg)));
+		}
+
+		return $beg.$ellipsis.$end;
+	}
+}
diff --git a/system/helpers/typography_helper.php b/system/helpers/typography_helper.php
new file mode 100644
index 00000000..47617ffb
--- /dev/null
+++ b/system/helpers/typography_helper.php
@@ -0,0 +1,104 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Typography Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/typography_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('nl2br_except_pre'))
+{
+	/**
+	 * Convert newlines to HTML line breaks except within PRE tags
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	function nl2br_except_pre($str)
+	{
+		$CI =& get_instance();
+		$CI->load->library('typography');
+		return $CI->typography->nl2br_except_pre($str);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('auto_typography'))
+{
+	/**
+	 * Auto Typography Wrapper Function
+	 *
+	 * @param	string	$str
+	 * @param	bool	$reduce_linebreaks = FALSE	whether to reduce multiple instances of double newlines to two
+	 * @return	string
+	 */
+	function auto_typography($str, $reduce_linebreaks = FALSE)
+	{
+		$CI =& get_instance();
+		$CI->load->library('typography');
+		return $CI->typography->auto_typography($str, $reduce_linebreaks);
+	}
+}
+
+// --------------------------------------------------------------------
+
+if ( ! function_exists('entity_decode'))
+{
+	/**
+	 * HTML Entities Decode
+	 *
+	 * This function is a replacement for html_entity_decode()
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	function entity_decode($str, $charset = NULL)
+	{
+		return get_instance()->security->entity_decode($str, $charset);
+	}
+}
diff --git a/system/helpers/url_helper.php b/system/helpers/url_helper.php
new file mode 100644
index 00000000..4c060a20
--- /dev/null
+++ b/system/helpers/url_helper.php
@@ -0,0 +1,569 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter URL Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/url_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('site_url'))
+{
+	/**
+	 * Site URL
+	 *
+	 * Create a local URL based on your basepath. Segments can be passed via the
+	 * first parameter either as a string or an array.
+	 *
+	 * @param	string	$uri
+	 * @param	string	$protocol
+	 * @return	string
+	 */
+	function site_url($uri = '', $protocol = NULL)
+	{
+		return get_instance()->config->site_url($uri, $protocol);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('base_url'))
+{
+	/**
+	 * Base URL
+	 *
+	 * Create a local URL based on your basepath.
+	 * Segments can be passed in as a string or an array, same as site_url
+	 * or a URL to a file can be passed in, e.g. to an image file.
+	 *
+	 * @param	string	$uri
+	 * @param	string	$protocol
+	 * @return	string
+	 */
+	function base_url($uri = '', $protocol = NULL)
+	{
+		return get_instance()->config->base_url($uri, $protocol);
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('current_url'))
+{
+	/**
+	 * Current URL
+	 *
+	 * Returns the full URL (including segments) of the page where this
+	 * function is placed
+	 *
+	 * @return	string
+	 */
+	function current_url()
+	{
+		$CI =& get_instance();
+		return $CI->config->site_url($CI->uri->uri_string());
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('uri_string'))
+{
+	/**
+	 * URL String
+	 *
+	 * Returns the URI segments.
+	 *
+	 * @return	string
+	 */
+	function uri_string()
+	{
+		return get_instance()->uri->uri_string();
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('index_page'))
+{
+	/**
+	 * Index page
+	 *
+	 * Returns the "index_page" from your config file
+	 *
+	 * @return	string
+	 */
+	function index_page()
+	{
+		return get_instance()->config->item('index_page');
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('anchor'))
+{
+	/**
+	 * Anchor Link
+	 *
+	 * Creates an anchor based on the local URL.
+	 *
+	 * @param	string	the URL
+	 * @param	string	the link title
+	 * @param	mixed	any attributes
+	 * @return	string
+	 */
+	function anchor($uri = '', $title = '', $attributes = '')
+	{
+		$title = (string) $title;
+
+		$site_url = is_array($uri)
+			? site_url($uri)
+			: (preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri));
+
+		if ($title === '')
+		{
+			$title = $site_url;
+		}
+
+		if ($attributes !== '')
+		{
+			$attributes = _stringify_attributes($attributes);
+		}
+
+		return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('anchor_popup'))
+{
+	/**
+	 * Anchor Link - Pop-up version
+	 *
+	 * Creates an anchor based on the local URL. The link
+	 * opens a new window based on the attributes specified.
+	 *
+	 * @param	string	the URL
+	 * @param	string	the link title
+	 * @param	mixed	any attributes
+	 * @return	string
+	 */
+	function anchor_popup($uri = '', $title = '', $attributes = FALSE)
+	{
+		$title = (string) $title;
+		$site_url = preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri);
+
+		if ($title === '')
+		{
+			$title = $site_url;
+		}
+
+		if ($attributes === FALSE)
+		{
+			return '<a href="'.$site_url.'" onclick="window.open(\''.$site_url."', '_blank'); return false;\">".$title.'</a>';
+		}
+
+		if ( ! is_array($attributes))
+		{
+			$attributes = array($attributes);
+
+			// Ref: https://www.w3schools.com/jsref/met_win_open.asp
+			$window_name = '_blank';
+		}
+		elseif ( ! empty($attributes['window_name']))
+		{
+			$window_name = $attributes['window_name'];
+			unset($attributes['window_name']);
+		}
+		else
+		{
+			$window_name = '_blank';
+		}
+
+		foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'menubar' => 'no', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0') as $key => $val)
+		{
+			$atts[$key] = isset($attributes[$key]) ? $attributes[$key] : $val;
+			unset($attributes[$key]);
+		}
+
+		$attributes = _stringify_attributes($attributes);
+
+		return '<a href="'.$site_url
+			.'" onclick="window.open(\''.$site_url."', '".$window_name."', '"._stringify_attributes($atts, TRUE)."'); return false;\""
+			.$attributes.'>'.$title.'</a>';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('mailto'))
+{
+	/**
+	 * Mailto Link
+	 *
+	 * @param	string	the email address
+	 * @param	string	the link title
+	 * @param	mixed	any attributes
+	 * @return	string
+	 */
+	function mailto($email, $title = '', $attributes = '')
+	{
+		$title = (string) $title;
+
+		if ($title === '')
+		{
+			$title = $email;
+		}
+
+		return '<a href="mailto:'.$email.'"'._stringify_attributes($attributes).'>'.$title.'</a>';
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('safe_mailto'))
+{
+	/**
+	 * Encoded Mailto Link
+	 *
+	 * Create a spam-protected mailto link written in Javascript
+	 *
+	 * @param	string	the email address
+	 * @param	string	the link title
+	 * @param	mixed	any attributes
+	 * @return	string
+	 */
+	function safe_mailto($email, $title = '', $attributes = '')
+	{
+		$title = (string) $title;
+
+		if ($title === '')
+		{
+			$title = $email;
+		}
+
+		$x = str_split('<a href="mailto:', 1);
+
+		for ($i = 0, $l = strlen($email); $i < $l; $i++)
+		{
+			$x[] = '|'.ord($email[$i]);
+		}
+
+		$x[] = '"';
+
+		if ($attributes !== '')
+		{
+			if (is_array($attributes))
+			{
+				foreach ($attributes as $key => $val)
+				{
+					$x[] = ' '.$key.'="';
+					for ($i = 0, $l = strlen($val); $i < $l; $i++)
+					{
+						$x[] = '|'.ord($val[$i]);
+					}
+					$x[] = '"';
+				}
+			}
+			else
+			{
+				for ($i = 0, $l = strlen($attributes); $i < $l; $i++)
+				{
+					$x[] = $attributes[$i];
+				}
+			}
+		}
+
+		$x[] = '>';
+
+		$temp = array();
+		for ($i = 0, $l = strlen($title); $i < $l; $i++)
+		{
+			$ordinal = ord($title[$i]);
+
+			if ($ordinal < 128)
+			{
+				$x[] = '|'.$ordinal;
+			}
+			else
+			{
+				if (count($temp) === 0)
+				{
+					$count = ($ordinal < 224) ? 2 : 3;
+				}
+
+				$temp[] = $ordinal;
+				if (count($temp) === $count)
+				{
+					$number = ($count === 3)
+							? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64)
+							: (($temp[0] % 32) * 64) + ($temp[1] % 64);
+					$x[] = '|'.$number;
+					$count = 1;
+					$temp = array();
+				}
+			}
+		}
+
+		$x[] = '<'; $x[] = '/'; $x[] = 'a'; $x[] = '>';
+
+		$x = array_reverse($x);
+
+		$output = "<script type=\"text/javascript\">\n"
+			."\t//<![CDATA[\n"
+			."\tvar l=new Array();\n";
+
+		for ($i = 0, $c = count($x); $i < $c; $i++)
+		{
+			$output .= "\tl[".$i."] = '".$x[$i]."';\n";
+		}
+
+		$output .= "\n\tfor (var i = l.length-1; i >= 0; i=i-1) {\n"
+			."\t\tif (l[i].substring(0, 1) === '|') document.write(\"&#\"+unescape(l[i].substring(1))+\";\");\n"
+			."\t\telse document.write(unescape(l[i]));\n"
+			."\t}\n"
+			."\t//]]>\n"
+			.'</script>';
+
+		return $output;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('auto_link'))
+{
+	/**
+	 * Auto-linker
+	 *
+	 * Automatically links URL and Email addresses.
+	 * Note: There's a bit of extra code here to deal with
+	 * URLs or emails that end in a period. We'll strip these
+	 * off and add them after the link.
+	 *
+	 * @param	string	the string
+	 * @param	string	the type: email, url, or both
+	 * @param	bool	whether to create pop-up links
+	 * @return	string
+	 */
+	function auto_link($str, $type = 'both', $popup = FALSE)
+	{
+		// Find and replace any URLs.
+		if ($type !== 'email' && preg_match_all('#(\w*://|www\.)[a-z0-9]+(-+[a-z0-9]+)*(\.[a-z0-9]+(-+[a-z0-9]+)*)+(/([^\s()<>;]+\w)?/?)?#i', $str, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER))
+		{
+			// Set our target HTML if using popup links.
+			$target = ($popup) ? ' target="_blank" rel="noopener"' : '';
+
+			// We process the links in reverse order (last -> first) so that
+			// the returned string offsets from preg_match_all() are not
+			// moved as we add more HTML.
+			foreach (array_reverse($matches) as $match)
+			{
+				// $match[0] is the matched string/link
+				// $match[1] is either a protocol prefix or 'www.'
+				//
+				// With PREG_OFFSET_CAPTURE, both of the above is an array,
+				// where the actual value is held in [0] and its offset at the [1] index.
+				$a = '<a href="'.(strpos($match[1][0], '/') ? '' : 'http://').$match[0][0].'"'.$target.'>'.$match[0][0].'</a>';
+				$str = substr_replace($str, $a, $match[0][1], strlen($match[0][0]));
+			}
+		}
+
+		// Find and replace any emails.
+		if ($type !== 'url' && preg_match_all('#([\w\.\-\+]+@[a-z0-9\-]+\.[a-z0-9\-\.]+[^[:punct:]\s])#i', $str, $matches, PREG_OFFSET_CAPTURE))
+		{
+			foreach (array_reverse($matches[0]) as $match)
+			{
+				if (filter_var($match[0], FILTER_VALIDATE_EMAIL) !== FALSE)
+				{
+					$str = substr_replace($str, safe_mailto($match[0]), $match[1], strlen($match[0]));
+				}
+			}
+		}
+
+		return $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('prep_url'))
+{
+	/**
+	 * Prep URL
+	 *
+	 * Simply adds the http:// part if no scheme is included
+	 *
+	 * @param	string	the URL
+	 * @return	string
+	 */
+	function prep_url($str = '')
+	{
+		if ($str === '')
+		{
+			return '';
+		}
+
+		$url = parse_url($str);
+
+		if ( ! $url OR ! isset($url['scheme']))
+		{
+			return 'http://'.$str;
+		}
+
+		return $str;
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('url_title'))
+{
+	/**
+	 * Create URL Title
+	 *
+	 * Takes a "title" string as input and creates a
+	 * human-friendly URL string with a "separator" string
+	 * as the word separator.
+	 *
+	 * @todo	Remove old 'dash' and 'underscore' usage in 3.1+.
+	 * @param	string	$str		Input string
+	 * @param	string	$separator	Word separator
+	 *			(usually '-' or '_')
+	 * @param	bool	$lowercase	Whether to transform the output string to lowercase
+	 * @return	string
+	 */
+	function url_title($str, $separator = '-', $lowercase = FALSE)
+	{
+		if ($separator === 'dash')
+		{
+			$separator = '-';
+		}
+		elseif ($separator === 'underscore')
+		{
+			$separator = '_';
+		}
+
+		$q_separator = preg_quote($separator, '#');
+
+		$trans = array(
+			'&.+?;'			=> '',
+			'[^\w\d _-]'		=> '',
+			'\s+'			=> $separator,
+			'('.$q_separator.')+'	=> $separator
+		);
+
+		$str = strip_tags($str);
+		foreach ($trans as $key => $val)
+		{
+			$str = preg_replace('#'.$key.'#i'.(UTF8_ENABLED ? 'u' : ''), $val, $str);
+		}
+
+		if ($lowercase === TRUE)
+		{
+			$str = strtolower($str);
+		}
+
+		return trim(trim($str, $separator));
+	}
+}
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('redirect'))
+{
+	/**
+	 * Header Redirect
+	 *
+	 * Header redirect in two flavors
+	 * For very fine grained control over headers, you could use the Output
+	 * Library's set_header() function.
+	 *
+	 * @param	string	$uri	URL
+	 * @param	string	$method	Redirect method
+	 *			'auto', 'location' or 'refresh'
+	 * @param	int	$code	HTTP Response status code
+	 * @return	void
+	 */
+	function redirect($uri = '', $method = 'auto', $code = NULL)
+	{
+		if ( ! preg_match('#^(\w+:)?//#i', $uri))
+		{
+			$uri = site_url($uri);
+		}
+
+		// IIS environment likely? Use 'refresh' for better compatibility
+		if ($method === 'auto' && isset($_SERVER['SERVER_SOFTWARE']) && strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !== FALSE)
+		{
+			$method = 'refresh';
+		}
+		elseif ($method !== 'refresh' && (empty($code) OR ! is_numeric($code)))
+		{
+			if (isset($_SERVER['SERVER_PROTOCOL'], $_SERVER['REQUEST_METHOD']) && $_SERVER['SERVER_PROTOCOL'] === 'HTTP/1.1')
+			{
+				$code = ($_SERVER['REQUEST_METHOD'] !== 'GET')
+					? 303	// reference: https://en.wikipedia.org/wiki/Post/Redirect/Get
+					: 307;
+			}
+			else
+			{
+				$code = 302;
+			}
+		}
+
+		switch ($method)
+		{
+			case 'refresh':
+				header('Refresh:0;url='.$uri);
+				break;
+			default:
+				header('Location: '.$uri, TRUE, $code);
+				break;
+		}
+		exit;
+	}
+}
diff --git a/system/helpers/xml_helper.php b/system/helpers/xml_helper.php
new file mode 100644
index 00000000..f83f3f54
--- /dev/null
+++ b/system/helpers/xml_helper.php
@@ -0,0 +1,90 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter XML Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/helpers/xml_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('xml_convert'))
+{
+	/**
+	 * Convert Reserved XML characters to Entities
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	function xml_convert($str, $protect_all = FALSE)
+	{
+		$temp = '__TEMP_AMPERSANDS__';
+
+		// Replace entities to temporary markers so that
+		// ampersands won't get messed up
+		$str = preg_replace('/&#(\d+);/', $temp.'\\1;', $str);
+
+		if ($protect_all === TRUE)
+		{
+			$str = preg_replace('/&(\w+);/', $temp.'\\1;', $str);
+		}
+
+		$str = str_replace(
+			array('&', '<', '>', '"', "'", '-'),
+			array('&amp;', '&lt;', '&gt;', '&quot;', '&apos;', '&#45;'),
+			$str
+		);
+
+		// Decode the temp markers back to entities
+		$str = preg_replace('/'.$temp.'(\d+);/', '&#\\1;', $str);
+
+		if ($protect_all === TRUE)
+		{
+			return preg_replace('/'.$temp.'(\w+);/', '&\\1;', $str);
+		}
+
+		return $str;
+	}
+}
diff --git a/system/index.html b/system/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/language/english/calendar_lang.php b/system/language/english/calendar_lang.php
new file mode 100644
index 00000000..ce838142
--- /dev/null
+++ b/system/language/english/calendar_lang.php
@@ -0,0 +1,84 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['cal_su'] = 'Su';
+$lang['cal_mo'] = 'Mo';
+$lang['cal_tu'] = 'Tu';
+$lang['cal_we'] = 'We';
+$lang['cal_th'] = 'Th';
+$lang['cal_fr'] = 'Fr';
+$lang['cal_sa'] = 'Sa';
+$lang['cal_sun'] = 'Sun';
+$lang['cal_mon'] = 'Mon';
+$lang['cal_tue'] = 'Tue';
+$lang['cal_wed'] = 'Wed';
+$lang['cal_thu'] = 'Thu';
+$lang['cal_fri'] = 'Fri';
+$lang['cal_sat'] = 'Sat';
+$lang['cal_sunday'] = 'Sunday';
+$lang['cal_monday'] = 'Monday';
+$lang['cal_tuesday'] = 'Tuesday';
+$lang['cal_wednesday'] = 'Wednesday';
+$lang['cal_thursday'] = 'Thursday';
+$lang['cal_friday'] = 'Friday';
+$lang['cal_saturday'] = 'Saturday';
+$lang['cal_jan'] = 'Jan';
+$lang['cal_feb'] = 'Feb';
+$lang['cal_mar'] = 'Mar';
+$lang['cal_apr'] = 'Apr';
+$lang['cal_may'] = 'May';
+$lang['cal_jun'] = 'Jun';
+$lang['cal_jul'] = 'Jul';
+$lang['cal_aug'] = 'Aug';
+$lang['cal_sep'] = 'Sep';
+$lang['cal_oct'] = 'Oct';
+$lang['cal_nov'] = 'Nov';
+$lang['cal_dec'] = 'Dec';
+$lang['cal_january'] = 'January';
+$lang['cal_february'] = 'February';
+$lang['cal_march'] = 'March';
+$lang['cal_april'] = 'April';
+$lang['cal_mayl'] = 'May';
+$lang['cal_june'] = 'June';
+$lang['cal_july'] = 'July';
+$lang['cal_august'] = 'August';
+$lang['cal_september'] = 'September';
+$lang['cal_october'] = 'October';
+$lang['cal_november'] = 'November';
+$lang['cal_december'] = 'December';
diff --git a/system/language/english/date_lang.php b/system/language/english/date_lang.php
new file mode 100644
index 00000000..aa796b89
--- /dev/null
+++ b/system/language/english/date_lang.php
@@ -0,0 +1,94 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['date_year'] = 'Year';
+$lang['date_years'] = 'Years';
+$lang['date_month'] = 'Month';
+$lang['date_months'] = 'Months';
+$lang['date_week'] = 'Week';
+$lang['date_weeks'] = 'Weeks';
+$lang['date_day'] = 'Day';
+$lang['date_days'] = 'Days';
+$lang['date_hour'] = 'Hour';
+$lang['date_hours'] = 'Hours';
+$lang['date_minute'] = 'Minute';
+$lang['date_minutes'] = 'Minutes';
+$lang['date_second'] = 'Second';
+$lang['date_seconds'] = 'Seconds';
+
+$lang['UM12']	= '(UTC -12:00) Baker/Howland Island';
+$lang['UM11']	= '(UTC -11:00) Niue';
+$lang['UM10']	= '(UTC -10:00) Hawaii-Aleutian Standard Time, Cook Islands, Tahiti';
+$lang['UM95']	= '(UTC -9:30) Marquesas Islands';
+$lang['UM9']	= '(UTC -9:00) Alaska Standard Time, Gambier Islands';
+$lang['UM8']	= '(UTC -8:00) Pacific Standard Time, Clipperton Island';
+$lang['UM7']	= '(UTC -7:00) Mountain Standard Time';
+$lang['UM6']	= '(UTC -6:00) Central Standard Time';
+$lang['UM5']	= '(UTC -5:00) Eastern Standard Time, Western Caribbean Standard Time';
+$lang['UM45']	= '(UTC -4:30) Venezuelan Standard Time';
+$lang['UM4']	= '(UTC -4:00) Atlantic Standard Time, Eastern Caribbean Standard Time';
+$lang['UM35']	= '(UTC -3:30) Newfoundland Standard Time';
+$lang['UM3']	= '(UTC -3:00) Argentina, Brazil, French Guiana, Uruguay';
+$lang['UM2']	= '(UTC -2:00) South Georgia/South Sandwich Islands';
+$lang['UM1']	= '(UTC -1:00) Azores, Cape Verde Islands';
+$lang['UTC']	= '(UTC) Greenwich Mean Time, Western European Time';
+$lang['UP1']	= '(UTC +1:00) Central European Time, West Africa Time';
+$lang['UP2']	= '(UTC +2:00) Central Africa Time, Eastern European Time, Kaliningrad Time';
+$lang['UP3']	= '(UTC +3:00) Moscow Time, East Africa Time, Arabia Standard Time';
+$lang['UP35']	= '(UTC +3:30) Iran Standard Time';
+$lang['UP4']	= '(UTC +4:00) Azerbaijan Standard Time, Samara Time';
+$lang['UP45']	= '(UTC +4:30) Afghanistan';
+$lang['UP5']	= '(UTC +5:00) Pakistan Standard Time, Yekaterinburg Time';
+$lang['UP55']	= '(UTC +5:30) Indian Standard Time, Sri Lanka Time';
+$lang['UP575']	= '(UTC +5:45) Nepal Time';
+$lang['UP6']	= '(UTC +6:00) Bangladesh Standard Time, Bhutan Time, Omsk Time';
+$lang['UP65']	= '(UTC +6:30) Cocos Islands, Myanmar';
+$lang['UP7']	= '(UTC +7:00) Krasnoyarsk Time, Cambodia, Laos, Thailand, Vietnam';
+$lang['UP8']	= '(UTC +8:00) Australian Western Standard Time, Beijing Time, Irkutsk Time';
+$lang['UP875']	= '(UTC +8:45) Australian Central Western Standard Time';
+$lang['UP9']	= '(UTC +9:00) Japan Standard Time, Korea Standard Time, Yakutsk Time';
+$lang['UP95']	= '(UTC +9:30) Australian Central Standard Time';
+$lang['UP10']	= '(UTC +10:00) Australian Eastern Standard Time, Vladivostok Time';
+$lang['UP105']	= '(UTC +10:30) Lord Howe Island';
+$lang['UP11']	= '(UTC +11:00) Srednekolymsk Time, Solomon Islands, Vanuatu';
+$lang['UP115']	= '(UTC +11:30) Norfolk Island';
+$lang['UP12']	= '(UTC +12:00) Fiji, Gilbert Islands, Kamchatka Time, New Zealand Standard Time';
+$lang['UP1275']	= '(UTC +12:45) Chatham Islands Standard Time';
+$lang['UP13']	= '(UTC +13:00) Samoa Time Zone, Phoenix Islands Time, Tonga';
+$lang['UP14']	= '(UTC +14:00) Line Islands';
diff --git a/system/language/english/db_lang.php b/system/language/english/db_lang.php
new file mode 100644
index 00000000..4a680146
--- /dev/null
+++ b/system/language/english/db_lang.php
@@ -0,0 +1,63 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['db_invalid_connection_str'] = 'Unable to determine the database settings based on the connection string you submitted.';
+$lang['db_unable_to_connect'] = 'Unable to connect to your database server using the provided settings.';
+$lang['db_unable_to_select'] = 'Unable to select the specified database: %s';
+$lang['db_unable_to_create'] = 'Unable to create the specified database: %s';
+$lang['db_invalid_query'] = 'The query you submitted is not valid.';
+$lang['db_must_set_table'] = 'You must set the database table to be used with your query.';
+$lang['db_must_use_set'] = 'You must use the "set" method to update an entry.';
+$lang['db_must_use_index'] = 'You must specify an index to match on for batch updates.';
+$lang['db_batch_missing_index'] = 'One or more rows submitted for batch updating is missing the specified index.';
+$lang['db_must_use_where'] = 'Updates are not allowed unless they contain a "where" clause.';
+$lang['db_del_must_use_where'] = 'Deletes are not allowed unless they contain a "where" or "like" clause.';
+$lang['db_field_param_missing'] = 'To fetch fields requires the name of the table as a parameter.';
+$lang['db_unsupported_function'] = 'This feature is not available for the database you are using.';
+$lang['db_transaction_failure'] = 'Transaction failure: Rollback performed.';
+$lang['db_unable_to_drop'] = 'Unable to drop the specified database.';
+$lang['db_unsupported_feature'] = 'Unsupported feature of the database platform you are using.';
+$lang['db_unsupported_compression'] = 'The file compression format you chose is not supported by your server.';
+$lang['db_filepath_error'] = 'Unable to write data to the file path you have submitted.';
+$lang['db_invalid_cache_path'] = 'The cache path you submitted is not valid or writable.';
+$lang['db_table_name_required'] = 'A table name is required for that operation.';
+$lang['db_column_name_required'] = 'A column name is required for that operation.';
+$lang['db_column_definition_required'] = 'A column definition is required for that operation.';
+$lang['db_unable_to_set_charset'] = 'Unable to set client connection character set: %s';
+$lang['db_error_heading'] = 'A Database Error Occurred';
diff --git a/system/language/english/email_lang.php b/system/language/english/email_lang.php
new file mode 100644
index 00000000..df0fd29c
--- /dev/null
+++ b/system/language/english/email_lang.php
@@ -0,0 +1,58 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['email_must_be_array'] = 'The email validation method must be passed an array.';
+$lang['email_invalid_address'] = 'Invalid email address: %s';
+$lang['email_attachment_missing'] = 'Unable to locate the following email attachment: %s';
+$lang['email_attachment_unreadable'] = 'Unable to open this attachment: %s';
+$lang['email_no_from'] = 'Cannot send mail with no "From" header.';
+$lang['email_no_recipients'] = 'You must include recipients: To, Cc, or Bcc';
+$lang['email_send_failure_phpmail'] = 'Unable to send email using PHP mail(). Your server might not be configured to send mail using this method.';
+$lang['email_send_failure_sendmail'] = 'Unable to send email using PHP Sendmail. Your server might not be configured to send mail using this method.';
+$lang['email_send_failure_smtp'] = 'Unable to send email using PHP SMTP. Your server might not be configured to send mail using this method.';
+$lang['email_sent'] = 'Your message has been successfully sent using the following protocol: %s';
+$lang['email_no_socket'] = 'Unable to open a socket to Sendmail. Please check settings.';
+$lang['email_no_hostname'] = 'You did not specify a SMTP hostname.';
+$lang['email_smtp_error'] = 'The following SMTP error was encountered: %s';
+$lang['email_no_smtp_unpw'] = 'Error: You must assign a SMTP username and password.';
+$lang['email_failed_smtp_login'] = 'Failed to send AUTH LOGIN command. Error: %s';
+$lang['email_smtp_auth_un'] = 'Failed to authenticate username. Error: %s';
+$lang['email_smtp_auth_pw'] = 'Failed to authenticate password. Error: %s';
+$lang['email_smtp_data_failure'] = 'Unable to send data: %s';
+$lang['email_exit_status'] = 'Exit status code: %s';
diff --git a/system/language/english/form_validation_lang.php b/system/language/english/form_validation_lang.php
new file mode 100644
index 00000000..74a2512c
--- /dev/null
+++ b/system/language/english/form_validation_lang.php
@@ -0,0 +1,70 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['form_validation_required']		= 'The {field} field is required.';
+$lang['form_validation_isset']			= 'The {field} field must have a value.';
+$lang['form_validation_valid_email']		= 'The {field} field must contain a valid email address.';
+$lang['form_validation_valid_emails']		= 'The {field} field must contain all valid email addresses.';
+$lang['form_validation_valid_url']		= 'The {field} field must contain a valid URL.';
+$lang['form_validation_valid_ip']		= 'The {field} field must contain a valid IP.';
+$lang['form_validation_valid_mac']		= 'The {field} field must contain a valid MAC.';
+$lang['form_validation_valid_base64']		= 'The {field} field must contain a valid Base64 string.';
+$lang['form_validation_min_length']		= 'The {field} field must be at least {param} characters in length.';
+$lang['form_validation_max_length']		= 'The {field} field cannot exceed {param} characters in length.';
+$lang['form_validation_exact_length']		= 'The {field} field must be exactly {param} characters in length.';
+$lang['form_validation_alpha']			= 'The {field} field may only contain alphabetical characters.';
+$lang['form_validation_alpha_numeric']		= 'The {field} field may only contain alpha-numeric characters.';
+$lang['form_validation_alpha_numeric_spaces']	= 'The {field} field may only contain alpha-numeric characters and spaces.';
+$lang['form_validation_alpha_dash']		= 'The {field} field may only contain alpha-numeric characters, underscores, and dashes.';
+$lang['form_validation_numeric']		= 'The {field} field must contain only numbers.';
+$lang['form_validation_is_numeric']		= 'The {field} field must contain only numeric characters.';
+$lang['form_validation_integer']		= 'The {field} field must contain an integer.';
+$lang['form_validation_regex_match']		= 'The {field} field is not in the correct format.';
+$lang['form_validation_matches']		= 'The {field} field does not match the {param} field.';
+$lang['form_validation_differs']		= 'The {field} field must differ from the {param} field.';
+$lang['form_validation_is_unique'] 		= 'The {field} field must contain a unique value.';
+$lang['form_validation_is_natural']		= 'The {field} field must only contain digits.';
+$lang['form_validation_is_natural_no_zero']	= 'The {field} field must only contain digits and must be greater than zero.';
+$lang['form_validation_decimal']		= 'The {field} field must contain a decimal number.';
+$lang['form_validation_less_than']		= 'The {field} field must contain a number less than {param}.';
+$lang['form_validation_less_than_equal_to']	= 'The {field} field must contain a number less than or equal to {param}.';
+$lang['form_validation_greater_than']		= 'The {field} field must contain a number greater than {param}.';
+$lang['form_validation_greater_than_equal_to']	= 'The {field} field must contain a number greater than or equal to {param}.';
+$lang['form_validation_error_message_not_set']	= 'Unable to access an error message corresponding to your field name {field}.';
+$lang['form_validation_in_list']		= 'The {field} field must be one of: {param}.';
diff --git a/system/language/english/ftp_lang.php b/system/language/english/ftp_lang.php
new file mode 100644
index 00000000..70f5b086
--- /dev/null
+++ b/system/language/english/ftp_lang.php
@@ -0,0 +1,51 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['ftp_no_connection']		= 'Unable to locate a valid connection ID. Please make sure you are connected before performing any file routines.';
+$lang['ftp_unable_to_connect']		= 'Unable to connect to your FTP server using the supplied hostname.';
+$lang['ftp_unable_to_login']		= 'Unable to login to your FTP server. Please check your username and password.';
+$lang['ftp_unable_to_mkdir']		= 'Unable to create the directory you have specified.';
+$lang['ftp_unable_to_changedir']	= 'Unable to change directories.';
+$lang['ftp_unable_to_chmod']		= 'Unable to set file permissions. Please check your path.';
+$lang['ftp_unable_to_upload']		= 'Unable to upload the specified file. Please check your path.';
+$lang['ftp_unable_to_download']		= 'Unable to download the specified file. Please check your path.';
+$lang['ftp_no_source_file']		= 'Unable to locate the source file. Please check your path.';
+$lang['ftp_unable_to_rename']		= 'Unable to rename the file.';
+$lang['ftp_unable_to_delete']		= 'Unable to delete the file.';
+$lang['ftp_unable_to_move']		= 'Unable to move the file. Please make sure the destination directory exists.';
diff --git a/system/language/english/imglib_lang.php b/system/language/english/imglib_lang.php
new file mode 100644
index 00000000..9a26b8a9
--- /dev/null
+++ b/system/language/english/imglib_lang.php
@@ -0,0 +1,58 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['imglib_source_image_required'] = 'You must specify a source image in your preferences.';
+$lang['imglib_gd_required'] = 'The GD image library is required for this feature.';
+$lang['imglib_gd_required_for_props'] = 'Your server must support the GD image library in order to determine the image properties.';
+$lang['imglib_unsupported_imagecreate'] = 'Your server does not support the GD function required to process this type of image.';
+$lang['imglib_gif_not_supported'] = 'GIF images are often not supported due to licensing restrictions. You may have to use JPG or PNG images instead.';
+$lang['imglib_jpg_not_supported'] = 'JPG images are not supported.';
+$lang['imglib_png_not_supported'] = 'PNG images are not supported.';
+$lang['imglib_webp_not_supported'] = 'WEBP images are not supported.';
+$lang['imglib_jpg_or_png_required'] = 'The image resize protocol specified in your preferences only works with JPEG or PNG image types.';
+$lang['imglib_copy_error'] = 'An error was encountered while attempting to replace the file. Please make sure your file directory is writable.';
+$lang['imglib_rotate_unsupported'] = 'Image rotation does not appear to be supported by your server.';
+$lang['imglib_libpath_invalid'] = 'The path to your image library is not correct. Please set the correct path in your image preferences.';
+$lang['imglib_image_process_failed'] = 'Image processing failed. Please verify that your server supports the chosen protocol and that the path to your image library is correct.';
+$lang['imglib_rotation_angle_required'] = 'An angle of rotation is required to rotate the image.';
+$lang['imglib_invalid_path'] = 'The path to the image is not correct.';
+$lang['imglib_invalid_image'] = 'The provided image is not valid.';
+$lang['imglib_copy_failed'] = 'The image copy routine failed.';
+$lang['imglib_missing_font'] = 'Unable to find a font to use.';
+$lang['imglib_save_failed'] = 'Unable to save the image. Please make sure the image and file directory are writable.';
diff --git a/system/language/english/index.html b/system/language/english/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/language/english/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/language/english/migration_lang.php b/system/language/english/migration_lang.php
new file mode 100644
index 00000000..967d59cc
--- /dev/null
+++ b/system/language/english/migration_lang.php
@@ -0,0 +1,47 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['migration_none_found'] = 'No migrations were found.';
+$lang['migration_not_found'] = 'No migration could be found with the version number: %s.';
+$lang['migration_sequence_gap'] = 'There is a gap in the migration sequence near version number: %s.';
+$lang['migration_multiple_version'] = 'There are multiple migrations with the same version number: %s.';
+$lang['migration_class_doesnt_exist'] = 'The migration class "%s" could not be found.';
+$lang['migration_missing_up_method'] = 'The migration class "%s" is missing an "up" method.';
+$lang['migration_missing_down_method'] = 'The migration class "%s" is missing a "down" method.';
+$lang['migration_invalid_filename'] = 'Migration "%s" has an invalid filename.';
diff --git a/system/language/english/number_lang.php b/system/language/english/number_lang.php
new file mode 100644
index 00000000..f1e50bd1
--- /dev/null
+++ b/system/language/english/number_lang.php
@@ -0,0 +1,44 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['terabyte_abbr'] = 'TB';
+$lang['gigabyte_abbr'] = 'GB';
+$lang['megabyte_abbr'] = 'MB';
+$lang['kilobyte_abbr'] = 'KB';
+$lang['bytes'] = 'Bytes';
diff --git a/system/language/english/pagination_lang.php b/system/language/english/pagination_lang.php
new file mode 100644
index 00000000..1d113dfb
--- /dev/null
+++ b/system/language/english/pagination_lang.php
@@ -0,0 +1,43 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['pagination_first_link'] = '&lsaquo; First';
+$lang['pagination_next_link'] = '&gt;';
+$lang['pagination_prev_link'] = '&lt;';
+$lang['pagination_last_link'] = 'Last &rsaquo;';
diff --git a/system/language/english/profiler_lang.php b/system/language/english/profiler_lang.php
new file mode 100644
index 00000000..15729672
--- /dev/null
+++ b/system/language/english/profiler_lang.php
@@ -0,0 +1,60 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['profiler_database'] = 'DATABASE';
+$lang['profiler_controller_info'] = 'CLASS/METHOD';
+$lang['profiler_benchmarks'] = 'BENCHMARKS';
+$lang['profiler_queries'] = 'QUERIES';
+$lang['profiler_get_data'] = 'GET DATA';
+$lang['profiler_post_data'] = 'POST DATA';
+$lang['profiler_uri_string'] = 'URI STRING';
+$lang['profiler_memory_usage'] = 'MEMORY USAGE';
+$lang['profiler_config'] = 'CONFIG VARIABLES';
+$lang['profiler_session_data'] = 'SESSION DATA';
+$lang['profiler_headers'] = 'HTTP HEADERS';
+$lang['profiler_no_db'] = 'Database driver is not currently loaded';
+$lang['profiler_no_queries'] = 'No queries were run';
+$lang['profiler_no_post'] = 'No POST data exists';
+$lang['profiler_no_get'] = 'No GET data exists';
+$lang['profiler_no_uri'] = 'No URI data exists';
+$lang['profiler_no_memory'] = 'Memory Usage Unavailable';
+$lang['profiler_no_profiles'] = 'No Profile data - all Profiler sections have been disabled.';
+$lang['profiler_section_hide'] = 'Hide';
+$lang['profiler_section_show'] = 'Show';
+$lang['profiler_seconds'] = 'seconds';
diff --git a/system/language/english/unit_test_lang.php b/system/language/english/unit_test_lang.php
new file mode 100644
index 00000000..b5a9cc4d
--- /dev/null
+++ b/system/language/english/unit_test_lang.php
@@ -0,0 +1,58 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['ut_test_name'] = 'Test Name';
+$lang['ut_test_datatype'] = 'Test Datatype';
+$lang['ut_res_datatype'] = 'Expected Datatype';
+$lang['ut_result'] = 'Result';
+$lang['ut_undefined'] = 'Undefined Test Name';
+$lang['ut_file'] = 'File Name';
+$lang['ut_line'] = 'Line Number';
+$lang['ut_passed'] = 'Passed';
+$lang['ut_failed'] = 'Failed';
+$lang['ut_boolean'] = 'Boolean';
+$lang['ut_integer'] = 'Integer';
+$lang['ut_float'] = 'Float';
+$lang['ut_double'] = 'Float'; // can be the same as float
+$lang['ut_string'] = 'String';
+$lang['ut_array'] = 'Array';
+$lang['ut_object'] = 'Object';
+$lang['ut_resource'] = 'Resource';
+$lang['ut_null'] = 'Null';
+$lang['ut_notes'] = 'Notes';
diff --git a/system/language/english/upload_lang.php b/system/language/english/upload_lang.php
new file mode 100644
index 00000000..f5158a3f
--- /dev/null
+++ b/system/language/english/upload_lang.php
@@ -0,0 +1,55 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['upload_userfile_not_set'] = 'Unable to find a post variable called userfile.';
+$lang['upload_file_exceeds_limit'] = 'The uploaded file exceeds the maximum allowed size in your PHP configuration file.';
+$lang['upload_file_exceeds_form_limit'] = 'The uploaded file exceeds the maximum size allowed by the submission form.';
+$lang['upload_file_partial'] = 'The file was only partially uploaded.';
+$lang['upload_no_temp_directory'] = 'The temporary folder is missing.';
+$lang['upload_unable_to_write_file'] = 'The file could not be written to disk.';
+$lang['upload_stopped_by_extension'] = 'The file upload was stopped by extension.';
+$lang['upload_no_file_selected'] = 'You did not select a file to upload.';
+$lang['upload_invalid_filetype'] = 'The filetype you are attempting to upload is not allowed.';
+$lang['upload_invalid_filesize'] = 'The file you are attempting to upload is larger than the permitted size.';
+$lang['upload_invalid_dimensions'] = 'The image you are attempting to upload doesn\'t fit into the allowed dimensions.';
+$lang['upload_destination_error'] = 'A problem was encountered while attempting to move the uploaded file to the final destination.';
+$lang['upload_no_filepath'] = 'The upload path does not appear to be valid.';
+$lang['upload_no_file_types'] = 'You have not specified any allowed file types.';
+$lang['upload_bad_filename'] = 'The file name you submitted already exists on the server.';
+$lang['upload_not_writable'] = 'The upload destination folder does not appear to be writable.';
diff --git a/system/language/index.html b/system/language/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/language/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/libraries/Cache/Cache.php b/system/libraries/Cache/Cache.php
new file mode 100644
index 00000000..b1241766
--- /dev/null
+++ b/system/libraries/Cache/Cache.php
@@ -0,0 +1,268 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Caching Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Cache extends CI_Driver_Library {
+
+	/**
+	 * Valid cache drivers
+	 *
+	 * @var array
+	 */
+	protected $valid_drivers = array(
+		'apc',
+		'apcu',
+		'dummy',
+		'file',
+		'memcached',
+		'redis',
+		'wincache'
+	);
+
+	/**
+	 * Path of cache files (if file-based cache)
+	 *
+	 * @var string
+	 */
+	protected $_cache_path = NULL;
+
+	/**
+	 * Reference to the driver
+	 *
+	 * @var mixed
+	 */
+	protected $_adapter = 'dummy';
+
+	/**
+	 * Fallback driver
+	 *
+	 * @var string
+	 */
+	protected $_backup_driver = 'dummy';
+
+	/**
+	 * Cache key prefix
+	 *
+	 * @var	string
+	 */
+	public $key_prefix = '';
+
+	/**
+	 * Constructor
+	 *
+	 * Initialize class properties based on the configuration array.
+	 *
+	 * @param	array	$config = array()
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		isset($config['adapter']) && $this->_adapter = $config['adapter'];
+		isset($config['backup']) && $this->_backup_driver = $config['backup'];
+		isset($config['key_prefix']) && $this->key_prefix = $config['key_prefix'];
+
+		// If the specified adapter isn't available, check the backup.
+		if ( ! $this->is_supported($this->_adapter))
+		{
+			if ( ! $this->is_supported($this->_backup_driver))
+			{
+				// Backup isn't supported either. Default to 'Dummy' driver.
+				log_message('error', 'Cache adapter "'.$this->_adapter.'" and backup "'.$this->_backup_driver.'" are both unavailable. Cache is now using "Dummy" adapter.');
+				$this->_adapter = 'dummy';
+			}
+			else
+			{
+				// Backup is supported. Set it to primary.
+				log_message('debug', 'Cache adapter "'.$this->_adapter.'" is unavailable. Falling back to "'.$this->_backup_driver.'" backup adapter.');
+				$this->_adapter = $this->_backup_driver;
+			}
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get
+	 *
+	 * Look for a value in the cache. If it exists, return the data
+	 * if not, return FALSE
+	 *
+	 * @param	string	$id
+	 * @return	mixed	value matching $id or FALSE on failure
+	 */
+	public function get($id)
+	{
+		return $this->{$this->_adapter}->get($this->key_prefix.$id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Save
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data to store
+	 * @param	int	$ttl	Cache TTL (in seconds)
+	 * @param	bool	$raw	Whether to store the raw value
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		return $this->{$this->_adapter}->save($this->key_prefix.$id, $data, $ttl, $raw);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	string	$id	Cache ID
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function delete($id)
+	{
+		return $this->{$this->_adapter}->delete($this->key_prefix.$id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		return $this->{$this->_adapter}->increment($this->key_prefix.$id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		return $this->{$this->_adapter}->decrement($this->key_prefix.$id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the cache
+	 *
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function clean()
+	{
+		return $this->{$this->_adapter}->clean();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @param	string	$type = 'user'	user/filehits
+	 * @return	mixed	array containing cache info on success OR FALSE on failure
+	 */
+	public function cache_info($type = 'user')
+	{
+		return $this->{$this->_adapter}->cache_info($type);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	string	$id	key to get cache metadata on
+	 * @return	mixed	cache item metadata
+	 */
+	public function get_metadata($id)
+	{
+		return $this->{$this->_adapter}->get_metadata($this->key_prefix.$id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Is the requested driver supported in this environment?
+	 *
+	 * @param	string	$driver	The driver to test
+	 * @return	array
+	 */
+	public function is_supported($driver)
+	{
+		static $support;
+
+		if ( ! isset($support, $support[$driver]))
+		{
+			$support[$driver] = $this->{$driver}->is_supported();
+		}
+
+		return $support[$driver];
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get currently loaded driver
+	 *
+	 * @return string
+	 */
+	public function get_loaded_driver()
+	{
+		return $this->_adapter;
+	}
+}
diff --git a/system/libraries/Cache/drivers/Cache_apc.php b/system/libraries/Cache/drivers/Cache_apc.php
new file mode 100644
index 00000000..c0527e66
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_apc.php
@@ -0,0 +1,217 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter APC Caching Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Cache_apc extends CI_Driver {
+
+	/**
+	 * Class constructor
+	 *
+	 * Only present so that an error message is logged
+	 * if APC is not available.
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		if ( ! $this->is_supported())
+		{
+			log_message('error', 'Cache: Failed to initialize APC; extension not loaded/enabled?');
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get
+	 *
+	 * Look for a value in the cache. If it exists, return the data
+	 * if not, return FALSE
+	 *
+	 * @param	string
+	 * @return	mixed	value that is stored/FALSE on failure
+	 */
+	public function get($id)
+	{
+		$success = FALSE;
+		$data = apc_fetch($id, $success);
+
+		return ($success === TRUE) ? $data : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Save
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data to store
+	 * @param	int	$ttl	Length of time (in seconds) to cache the data
+	 * @param	bool	$raw	Whether to store the raw value (unused)
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		return apc_store($id, $data, (int) $ttl);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	unique identifier of the item in the cache
+	 * @return	bool	true on success/false on failure
+	 */
+	public function delete($id)
+	{
+		return apc_delete($id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		return apc_inc($id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		return apc_dec($id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the cache
+	 *
+	 * @return	bool	false on failure/true on success
+	 */
+	public function clean()
+	{
+		return apc_clear_cache('user');
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @param	string	user/filehits
+	 * @return	mixed	array on success, false on failure
+	 */
+	public function cache_info($type = NULL)
+	{
+		return apc_cache_info($type);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	key to get cache metadata on
+	 * @return	mixed	array on success/false on failure
+	 */
+	public function get_metadata($id)
+	{
+		$cache_info = apc_cache_info('user', FALSE);
+		if (empty($cache_info) OR empty($cache_info['cache_list']))
+		{
+			return FALSE;
+		}
+
+		foreach ($cache_info['cache_list'] as &$entry)
+		{
+			if ($entry['info'] !== $id)
+			{
+				continue;
+			}
+
+			$success  = FALSE;
+			$metadata = array(
+				'expire' => ($entry['ttl'] ? $entry['mtime'] + $entry['ttl'] : 0),
+				'mtime'  => $entry['ttl'],
+				'data'   => apc_fetch($id, $success)
+			);
+
+			return ($success === TRUE) ? $metadata : FALSE;
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * is_supported()
+	 *
+	 * Check to see if APC is available on this system, bail if it isn't.
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		return (extension_loaded('apc') && ini_get('apc.enabled'));
+	}
+}
diff --git a/system/libraries/Cache/drivers/Cache_apcu.php b/system/libraries/Cache/drivers/Cache_apcu.php
new file mode 100644
index 00000000..01f80e79
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_apcu.php
@@ -0,0 +1,219 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.2.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter APCu Caching Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		CodeIgniter Dev team
+ */
+class CI_Cache_apcu extends CI_Driver {
+
+	/**
+	 * Class constructor
+	 *
+	 * Only present so that an error message is logged
+	 * if APCu is not available.
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		if ( ! $this->is_supported())
+		{
+			log_message('error', 'Cache: Failed to initialize APCu; extension not loaded/enabled?');
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get
+	 *
+	 * Look for a value in the cache. If it exists, return the data
+	 * if not, return FALSE
+	 *
+	 * @param	string
+	 * @return	mixed	value that is stored/FALSE on failure
+	 */
+	public function get($id)
+	{
+		$success = FALSE;
+		$data = apcu_fetch($id, $success);
+
+		if ($success === TRUE)
+		{
+			return is_array($data)
+				? $data[0]
+				: $data;
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Save
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data to store
+	 * @param	int	$ttl	Length of time (in seconds) to cache the data
+	 * @param	bool	$raw	Whether to store the raw value
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		$ttl = (int) $ttl;
+
+		return apcu_store(
+			$id,
+			($raw === TRUE ? $data : array($data, time(), $ttl)),
+			$ttl
+		);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	unique identifier of the item in the cache
+	 * @return	bool	true on success/false on failure
+	 */
+	public function delete($id)
+	{
+		return apcu_delete($id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		return apcu_inc($id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		return apcu_dec($id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the cache
+	 *
+	 * @return	bool	false on failure/true on success
+	 */
+	public function clean()
+	{
+		return apcu_clear_cache();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @return	mixed	array on success, false on failure
+	 */
+	public function cache_info()
+	{
+		return apcu_cache_info();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	key to get cache metadata on
+	 * @return	mixed	array on success/false on failure
+	 */
+	public function get_metadata($id)
+	{
+		$success = FALSE;
+		$stored = apcu_fetch($id, $success);
+
+		if ($success === FALSE OR count($stored) !== 3)
+		{
+			return FALSE;
+		}
+
+		list($data, $time, $ttl) = $stored;
+
+		return array(
+			'expire'  => $time + $ttl,
+			'mtime'   => $time,
+			'data'    => $data
+		);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * is_supported()
+	 *
+	 * Check to see if APCu is available on this system, bail if it isn't.
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		return (extension_loaded('apcu') && ini_get('apc.enabled'));
+	}
+}
\ No newline at end of file
diff --git a/system/libraries/Cache/drivers/Cache_dummy.php b/system/libraries/Cache/drivers/Cache_dummy.php
new file mode 100644
index 00000000..0a90d069
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_dummy.php
@@ -0,0 +1,172 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Dummy Caching Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Cache_dummy extends CI_Driver {
+
+	/**
+	 * Get
+	 *
+	 * Since this is the dummy class, it's always going to return FALSE.
+	 *
+	 * @param	string
+	 * @return	bool	FALSE
+	 */
+	public function get($id)
+	{
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Save
+	 *
+	 * @param	string	Unique Key
+	 * @param	mixed	Data to store
+	 * @param	int	Length of time (in seconds) to cache the data
+	 * @param	bool	Whether to store the raw value
+	 * @return	bool	TRUE, Simulating success
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	unique identifier of the item in the cache
+	 * @return	bool	TRUE, simulating success
+	 */
+	public function delete($id)
+	{
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the cache
+	 *
+	 * @return	bool	TRUE, simulating success
+	 */
+	public function clean()
+	{
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @param	string	user/filehits
+	 * @return	bool	FALSE
+	 */
+	public function cache_info($type = NULL)
+	{
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	key to get cache metadata on
+	 * @return	bool	FALSE
+	 */
+	public function get_metadata($id)
+	{
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Is this caching driver supported on the system?
+	 * Of course this one is.
+	 *
+	 * @return	bool	TRUE
+	 */
+	public function is_supported()
+	{
+		return TRUE;
+	}
+
+}
diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
new file mode 100644
index 00000000..bde35141
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -0,0 +1,286 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter File Caching Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Cache_file extends CI_Driver {
+
+	/**
+	 * Directory in which to save cache files
+	 *
+	 * @var string
+	 */
+	protected $_cache_path;
+
+	/**
+	 * Initialize file-based cache
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$CI =& get_instance();
+		$CI->load->helper('file');
+		$path = $CI->config->item('cache_path');
+		$this->_cache_path = ($path === '') ? APPPATH.'cache/' : $path;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Fetch from cache
+	 *
+	 * @param	string	$id	Cache ID
+	 * @return	mixed	Data on success, FALSE on failure
+	 */
+	public function get($id)
+	{
+		$data = $this->_get($id);
+		return is_array($data) ? $data['data'] : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Save into cache
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data to store
+	 * @param	int	$ttl	Time to live in seconds
+	 * @param	bool	$raw	Whether to store the raw value (unused)
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		$contents = array(
+			'time'		=> time(),
+			'ttl'		=> $ttl,
+			'data'		=> $data
+		);
+
+		if (write_file($this->_cache_path.$id, serialize($contents)))
+		{
+			chmod($this->_cache_path.$id, 0640);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	unique identifier of item in cache
+	 * @return	bool	true on success/false on failure
+	 */
+	public function delete($id)
+	{
+		return is_file($this->_cache_path.$id) ? unlink($this->_cache_path.$id) : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	New value on success, FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		$data = $this->_get($id);
+
+		if ($data === FALSE)
+		{
+			$data = array('data' => 0, 'ttl' => 60);
+		}
+		elseif ( ! is_int($data['data']))
+		{
+			return FALSE;
+		}
+
+		$new_value = $data['data'] + $offset;
+		return $this->save($id, $new_value, $data['ttl'])
+			? $new_value
+			: FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	New value on success, FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		$data = $this->_get($id);
+
+		if ($data === FALSE)
+		{
+			$data = array('data' => 0, 'ttl' => 60);
+		}
+		elseif ( ! is_int($data['data']))
+		{
+			return FALSE;
+		}
+
+		$new_value = $data['data'] - $offset;
+		return $this->save($id, $new_value, $data['ttl'])
+			? $new_value
+			: FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the Cache
+	 *
+	 * @return	bool	false on failure/true on success
+	 */
+	public function clean()
+	{
+		return delete_files($this->_cache_path, FALSE, TRUE);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * Not supported by file-based caching
+	 *
+	 * @param	string	user/filehits
+	 * @return	mixed	FALSE
+	 */
+	public function cache_info($type = NULL)
+	{
+		return get_dir_file_info($this->_cache_path);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	key to get cache metadata on
+	 * @return	mixed	FALSE on failure, array on success.
+	 */
+	public function get_metadata($id)
+	{
+		if ( ! is_file($this->_cache_path.$id))
+		{
+			return FALSE;
+		}
+
+		$data = unserialize(file_get_contents($this->_cache_path.$id));
+
+		if (is_array($data))
+		{
+			$mtime = filemtime($this->_cache_path.$id);
+
+			if ( ! isset($data['ttl'], $data['time']))
+			{
+				return FALSE;
+			}
+
+			return array(
+				'expire' => $data['time'] + $data['ttl'],
+				'mtime'	 => $mtime
+			);
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Is supported
+	 *
+	 * In the file driver, check to see that the cache directory is indeed writable
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		return is_really_writable($this->_cache_path);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get all data
+	 *
+	 * Internal method to get all the relevant data about a cache item
+	 *
+	 * @param	string	$id	Cache ID
+	 * @return	mixed	Data array on success or FALSE on failure
+	 */
+	protected function _get($id)
+	{
+		if ( ! is_file($this->_cache_path.$id))
+		{
+			return FALSE;
+		}
+
+		$data = unserialize(file_get_contents($this->_cache_path.$id));
+
+		if ($data['ttl'] > 0 && time() > $data['time'] + $data['ttl'])
+		{
+			file_exists($this->_cache_path.$id) && unlink($this->_cache_path.$id);
+			return FALSE;
+		}
+
+		return $data;
+	}
+
+}
diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php
new file mode 100644
index 00000000..24969e0b
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_memcached.php
@@ -0,0 +1,325 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Memcached Caching Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Cache_memcached extends CI_Driver {
+
+	/**
+	 * Holds the memcached object
+	 *
+	 * @var object
+	 */
+	protected $_memcached;
+
+	/**
+	 * Memcached configuration
+	 *
+	 * @var array
+	 */
+	protected $_config = array(
+		'default' => array(
+			'host'		=> '127.0.0.1',
+			'port'		=> 11211,
+			'weight'	=> 1
+		)
+	);
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Setup Memcache(d)
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		// Try to load memcached server info from the config file.
+		$CI =& get_instance();
+		$defaults = $this->_config['default'];
+
+		if ($CI->config->load('memcached', TRUE, TRUE))
+		{
+			$this->_config = $CI->config->config['memcached'];
+		}
+
+		if (class_exists('Memcached', FALSE))
+		{
+			$this->_memcached = new Memcached();
+		}
+		elseif (class_exists('Memcache', FALSE))
+		{
+			$this->_memcached = new Memcache();
+		}
+		else
+		{
+			log_message('error', 'Cache: Failed to create Memcache(d) object; extension not loaded?');
+			return;
+		}
+
+		foreach ($this->_config as $cache_name => $cache_server)
+		{
+			if ( ! isset($cache_server['hostname']))
+			{
+				log_message('debug', 'Cache: Memcache(d) configuration "'.$cache_name.'" doesn\'t include a hostname; ignoring.');
+				continue;
+			}
+			elseif ($cache_server['hostname'][0] === '/')
+			{
+				$cache_server['port'] = 0;
+			}
+			elseif (empty($cache_server['port']))
+			{
+				$cache_server['port'] = $defaults['port'];
+			}
+
+			isset($cache_server['weight']) OR $cache_server['weight'] = $defaults['weight'];
+
+			if ($this->_memcached instanceof Memcache)
+			{
+				// Third parameter is persistence and defaults to TRUE.
+				$this->_memcached->addServer(
+					$cache_server['hostname'],
+					$cache_server['port'],
+					TRUE,
+					$cache_server['weight']
+				);
+			}
+			elseif ($this->_memcached instanceof Memcached)
+			{
+				$this->_memcached->addServer(
+					$cache_server['hostname'],
+					$cache_server['port'],
+					$cache_server['weight']
+				);
+			}
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Fetch from cache
+	 *
+	 * @param	string	$id	Cache ID
+	 * @return	mixed	Data on success, FALSE on failure
+	 */
+	public function get($id)
+	{
+		$data = $this->_memcached->get($id);
+
+		return is_array($data) ? $data[0] : $data;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Save
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data being cached
+	 * @param	int	$ttl	Time to live
+	 * @param	bool	$raw	Whether to store the raw value
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		if ($raw !== TRUE)
+		{
+			$data = array($data, time(), $ttl);
+		}
+
+		if ($this->_memcached instanceof Memcached)
+		{
+			return $this->_memcached->set($id, $data, $ttl);
+		}
+		elseif ($this->_memcached instanceof Memcache)
+		{
+			return $this->_memcached->set($id, $data, 0, $ttl);
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	$id	key to be deleted.
+	 * @return	bool	true on success, false on failure
+	 */
+	public function delete($id)
+	{
+		return $this->_memcached->delete($id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		if (($result = $this->_memcached->increment($id, $offset)) === FALSE)
+		{
+			return $this->_memcached->add($id, $offset) ? $offset : FALSE;
+		}
+
+		return $result;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		if (($result = $this->_memcached->decrement($id, $offset)) === FALSE)
+		{
+			return $this->_memcached->add($id, 0) ? 0 : FALSE;
+		}
+
+		return $result;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the Cache
+	 *
+	 * @return	bool	false on failure/true on success
+	 */
+	public function clean()
+	{
+		return $this->_memcached->flush();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @return	mixed	array on success, false on failure
+	 */
+	public function cache_info()
+	{
+		return $this->_memcached->getStats();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	$id	key to get cache metadata on
+	 * @return	mixed	FALSE on failure, array on success.
+	 */
+	public function get_metadata($id)
+	{
+		$stored = $this->_memcached->get($id);
+
+		if (count($stored) !== 3)
+		{
+			return FALSE;
+		}
+
+		list($data, $time, $ttl) = $stored;
+
+		return array(
+			'expire'	=> $time + $ttl,
+			'mtime'		=> $time,
+			'data'		=> $data
+		);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Is supported
+	 *
+	 * Returns FALSE if memcached is not supported on the system.
+	 * If it is, we setup the memcached object & return TRUE
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		return (extension_loaded('memcached') OR extension_loaded('memcache'));
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class destructor
+	 *
+	 * Closes the connection to Memcache(d) if present.
+	 *
+	 * @return	void
+	 */
+	public function __destruct()
+	{
+		if ($this->_memcached instanceof Memcache)
+		{
+			$this->_memcached->close();
+		}
+		elseif ($this->_memcached instanceof Memcached && method_exists($this->_memcached, 'quit'))
+		{
+			$this->_memcached->quit();
+		}
+	}
+}
diff --git a/system/libraries/Cache/drivers/Cache_redis.php b/system/libraries/Cache/drivers/Cache_redis.php
new file mode 100644
index 00000000..9b082d11
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_redis.php
@@ -0,0 +1,364 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Redis Caching Class
+ *
+ * @package	   CodeIgniter
+ * @subpackage Libraries
+ * @category   Core
+ * @author	   Anton Lindqvist <anton@qvister.se>
+ * @link
+ */
+class CI_Cache_redis extends CI_Driver
+{
+	/**
+	 * Default config
+	 *
+	 * @static
+	 * @var	array
+	 */
+	protected static $_default_config = array(
+		'host' => '127.0.0.1',
+		'password' => NULL,
+		'port' => 6379,
+		'timeout' => 0,
+		'database' => 0
+	);
+
+	/**
+	 * Redis connection
+	 *
+	 * @var	Redis
+	 */
+	protected $_redis;
+
+
+	/**
+	 * del()/delete() method name depending on phpRedis version
+	 *
+	 * @var	string
+	 */
+	protected static $_delete_name;
+
+	/**
+	 * sRem()/sRemove() method name depending on phpRedis version
+	 *
+	 * @var	string
+	 */
+	protected static $_sRemove_name;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Setup Redis
+	 *
+	 * Loads Redis config file if present. Will halt execution
+	 * if a Redis connection can't be established.
+	 *
+	 * @return	void
+	 * @see		Redis::connect()
+	 */
+	public function __construct()
+	{
+		if ( ! $this->is_supported())
+		{
+			log_message('error', 'Cache: Failed to create Redis object; extension not loaded?');
+			return;
+		}
+
+		if ( ! isset(static::$_delete_name, static::$_sRemove_name))
+		{
+			if (version_compare(phpversion('redis'), '5', '>='))
+			{
+				static::$_delete_name  = 'del';
+				static::$_sRemove_name = 'sRem';
+			}
+			else
+			{
+				static::$_delete_name  = 'delete';
+				static::$_sRemove_name = 'sRemove';
+			}
+		}
+
+		$CI =& get_instance();
+
+		if ($CI->config->load('redis', TRUE, TRUE))
+		{
+			$config = array_merge(self::$_default_config, $CI->config->item('redis'));
+		}
+		else
+		{
+			$config = self::$_default_config;
+		}
+
+		$this->_redis = new Redis();
+
+		try
+		{
+			if ( ! $this->_redis->connect($config['host'], ($config['host'][0] === '/' ? 0 : $config['port']), $config['timeout']))
+			{
+				log_message('error', 'Cache: Redis connection failed. Check your configuration.');
+			}
+
+			if (isset($config['password']) && ! $this->_redis->auth($config['password']))
+			{
+				log_message('error', 'Cache: Redis authentication failed.');
+			}
+
+			if (isset($config['database']) && $config['database'] > 0 && ! $this->_redis->select($config['database']))
+			{
+				log_message('error', 'Cache: Redis select database failed.');
+			}
+		}
+		catch (RedisException $e)
+		{
+			log_message('error', 'Cache: Redis connection refused ('.$e->getMessage().')');
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get cache
+	 *
+	 * @param	string	$key	Cache ID
+	 * @return	mixed
+	 */
+	public function get($key)
+	{
+		$data = $this->_redis->hMGet($key, array('__ci_type', '__ci_value'));
+
+		if ($value !== FALSE && $this->_redis->sIsMember('_ci_redis_serialized', $key))
+		{
+			return FALSE;
+		}
+
+		switch ($data['__ci_type'])
+		{
+			case 'array':
+			case 'object':
+				return unserialize($data['__ci_value']);
+			case 'boolean':
+			case 'integer':
+			case 'double': // Yes, 'double' is returned and NOT 'float'
+			case 'string':
+			case 'NULL':
+				return settype($data['__ci_value'], $data['__ci_type'])
+					? $data['__ci_value']
+					: FALSE;
+			case 'resource':
+			default:
+				return FALSE;
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Save cache
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data to save
+	 * @param	int	$ttl	Time to live in seconds
+	 * @param	bool	$raw	Whether to store the raw value (unused)
+	 * @return	bool	TRUE on success, FALSE on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		switch ($data_type = gettype($data))
+		{
+			case 'array':
+			case 'object':
+				$data = serialize($data);
+				break;
+			case 'boolean':
+			case 'integer':
+			case 'double': // Yes, 'double' is returned and NOT 'float'
+			case 'string':
+			case 'NULL':
+				break;
+			case 'resource':
+			default:
+				return FALSE;
+		}
+
+		if ( ! $this->_redis->hMSet($id, array('__ci_type' => $data_type, '__ci_value' => $data)))
+		{
+			return FALSE;
+		}
+		else
+		{
+			$this->_redis->{static::$_sRemove_name}('_ci_redis_serialized', $id);
+		}
+
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from cache
+	 *
+	 * @param	string	$key	Cache key
+	 * @return	bool
+	 */
+	public function delete($key)
+	{
+		if ($this->_redis->{static::$_delete_name}($key) !== 1)
+		{
+			return FALSE;
+		}
+
+		$this->_redis->{static::$_sRemove_name}('_ci_redis_serialized', $key);
+
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		return $this->_redis->incrBy($id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		return $this->_redis->decrBy($id, $offset);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean cache
+	 *
+	 * @return	bool
+	 * @see		Redis::flushDB()
+	 */
+	public function clean()
+	{
+		return $this->_redis->flushDB();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get cache driver info
+	 *
+	 * @param	string	$type	Not supported in Redis.
+	 *				Only included in order to offer a
+	 *				consistent cache API.
+	 * @return	array
+	 * @see		Redis::info()
+	 */
+	public function cache_info($type = NULL)
+	{
+		return $this->_redis->info();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get cache metadata
+	 *
+	 * @param	string	$key	Cache key
+	 * @return	array
+	 */
+	public function get_metadata($key)
+	{
+		$value = $this->get($key);
+
+		if ($value !== FALSE)
+		{
+			return array(
+				'expire' => time() + $this->_redis->ttl($key),
+				'data' => $value
+			);
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Check if Redis driver is supported
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		return extension_loaded('redis');
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class destructor
+	 *
+	 * Closes the connection to Redis if present.
+	 *
+	 * @return	void
+	 */
+	public function __destruct()
+	{
+		if ($this->_redis)
+		{
+			$this->_redis->close();
+		}
+	}
+}
diff --git a/system/libraries/Cache/drivers/Cache_wincache.php b/system/libraries/Cache/drivers/Cache_wincache.php
new file mode 100644
index 00000000..703fece7
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_wincache.php
@@ -0,0 +1,217 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Wincache Caching Class
+ *
+ * Read more about Wincache functions here:
+ * https://secure.php.net/manual/en/ref.wincache.php
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		Mike Murkovic
+ * @link
+ */
+class CI_Cache_wincache extends CI_Driver {
+
+	/**
+	 * Class constructor
+	 *
+	 * Only present so that an error message is logged
+	 * if APC is not available.
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		if ( ! $this->is_supported())
+		{
+			log_message('error', 'Cache: Failed to initialize Wincache; extension not loaded/enabled?');
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get
+	 *
+	 * Look for a value in the cache. If it exists, return the data,
+	 * if not, return FALSE
+	 *
+	 * @param	string	$id	Cache Ide
+	 * @return	mixed	Value that is stored/FALSE on failure
+	 */
+	public function get($id)
+	{
+		$success = FALSE;
+		$data = wincache_ucache_get($id, $success);
+
+		// Success returned by reference from wincache_ucache_get()
+		return ($success) ? $data : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Save
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	mixed	$data	Data to store
+	 * @param	int	$ttl	Time to live (in seconds)
+	 * @param	bool	$raw	Whether to store the raw value (unused)
+	 * @return	bool	true on success/false on failure
+	 */
+	public function save($id, $data, $ttl = 60, $raw = FALSE)
+	{
+		return wincache_ucache_set($id, $data, $ttl);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	unique identifier of the item in the cache
+	 * @return	bool	true on success/false on failure
+	 */
+	public function delete($id)
+	{
+		return wincache_ucache_delete($id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Increment a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to add
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function increment($id, $offset = 1)
+	{
+		$success = FALSE;
+		$value = wincache_ucache_inc($id, $offset, $success);
+
+		return ($success === TRUE) ? $value : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Decrement a raw value
+	 *
+	 * @param	string	$id	Cache ID
+	 * @param	int	$offset	Step/value to reduce by
+	 * @return	mixed	New value on success or FALSE on failure
+	 */
+	public function decrement($id, $offset = 1)
+	{
+		$success = FALSE;
+		$value = wincache_ucache_dec($id, $offset, $success);
+
+		return ($success === TRUE) ? $value : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the cache
+	 *
+	 * @return	bool	false on failure/true on success
+	 */
+	public function clean()
+	{
+		return wincache_ucache_clear();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @return	mixed	array on success, false on failure
+	 */
+	public function cache_info()
+	{
+		return wincache_ucache_info(TRUE);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	key to get cache metadata on
+	 * @return	mixed	array on success/false on failure
+	 */
+	public function get_metadata($id)
+	{
+		if ($stored = wincache_ucache_info(FALSE, $id))
+		{
+			$age = $stored['ucache_entries'][1]['age_seconds'];
+			$ttl = $stored['ucache_entries'][1]['ttl_seconds'];
+			$hitcount = $stored['ucache_entries'][1]['hitcount'];
+
+			return array(
+				'expire'	=> $ttl - $age,
+				'hitcount'	=> $hitcount,
+				'age'		=> $age,
+				'ttl'		=> $ttl
+			);
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * is_supported()
+	 *
+	 * Check to see if WinCache is available on this system, bail if it isn't.
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		return (extension_loaded('wincache') && ini_get('wincache.ucenabled'));
+	}
+}
diff --git a/system/libraries/Cache/drivers/index.html b/system/libraries/Cache/drivers/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/libraries/Cache/drivers/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/libraries/Cache/index.html b/system/libraries/Cache/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/libraries/Cache/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/libraries/Calendar.php b/system/libraries/Calendar.php
new file mode 100644
index 00000000..fcfcf62c
--- /dev/null
+++ b/system/libraries/Calendar.php
@@ -0,0 +1,546 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Calendar Class
+ *
+ * This class enables the creation of calendars
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/calendar.html
+ */
+class CI_Calendar {
+
+	/**
+	 * Calendar layout template
+	 *
+	 * @var mixed
+	 */
+	public $template = '';
+
+	/**
+	 * Replacements array for template
+	 *
+	 * @var array
+	 */
+	public $replacements = array();
+
+	/**
+	 * Day of the week to start the calendar on
+	 *
+	 * @var string
+	 */
+	public $start_day = 'sunday';
+
+	/**
+	 * How to display months
+	 *
+	 * @var string
+	 */
+	public $month_type = 'long';
+
+	/**
+	 * How to display names of days
+	 *
+	 * @var string
+	 */
+	public $day_type = 'abr';
+
+	/**
+	 * Whether to show next/prev month links
+	 *
+	 * @var bool
+	 */
+	public $show_next_prev = FALSE;
+
+	/**
+	 * Url base to use for next/prev month links
+	 *
+	 * @var bool
+	 */
+	public $next_prev_url = '';
+
+	/**
+	 * Show days of other months
+	 *
+	 * @var bool
+	 */
+	public $show_other_days = FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * CI Singleton
+	 *
+	 * @var object
+	 */
+	protected $CI;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Loads the calendar language file and sets the default time reference.
+	 *
+	 * @uses	CI_Lang::$is_loaded
+	 *
+	 * @param	array	$config	Calendar options
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		$this->CI =& get_instance();
+		$this->CI->lang->load('calendar');
+
+		empty($config) OR $this->initialize($config);
+
+		log_message('info', 'Calendar Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize the user preferences
+	 *
+	 * Accepts an associative array as input, containing display preferences
+	 *
+	 * @param	array	config preferences
+	 * @return	CI_Calendar
+	 */
+	public function initialize($config = array())
+	{
+		foreach ($config as $key => $val)
+		{
+			if (isset($this->$key))
+			{
+				$this->$key = $val;
+			}
+		}
+
+		// Set the next_prev_url to the controller if required but not defined
+		if ($this->show_next_prev === TRUE && empty($this->next_prev_url))
+		{
+			$this->next_prev_url = $this->CI->config->site_url($this->CI->router->class.'/'.$this->CI->router->method);
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate the calendar
+	 *
+	 * @param	int	the year
+	 * @param	int	the month
+	 * @param	array	the data to be shown in the calendar cells
+	 * @return	string
+	 */
+	public function generate($year = '', $month = '', $data = array())
+	{
+		$local_time = time();
+
+		// Set and validate the supplied month/year
+		if (empty($year))
+		{
+			$year = date('Y', $local_time);
+		}
+		elseif (strlen($year) === 1)
+		{
+			$year = '200'.$year;
+		}
+		elseif (strlen($year) === 2)
+		{
+			$year = '20'.$year;
+		}
+
+		if (empty($month))
+		{
+			$month = date('m', $local_time);
+		}
+		elseif (strlen($month) === 1)
+		{
+			$month = '0'.$month;
+		}
+
+		$adjusted_date = $this->adjust_date($month, $year);
+
+		$month	= $adjusted_date['month'];
+		$year	= $adjusted_date['year'];
+
+		// Determine the total days in the month
+		$total_days = $this->get_total_days($month, $year);
+
+		// Set the starting day of the week
+		$start_days	= array('sunday' => 0, 'monday' => 1, 'tuesday' => 2, 'wednesday' => 3, 'thursday' => 4, 'friday' => 5, 'saturday' => 6);
+		$start_day	= isset($start_days[$this->start_day]) ? $start_days[$this->start_day] : 0;
+
+		// Set the starting day number
+		$local_date = mktime(12, 0, 0, $month, 1, $year);
+		$date = getdate($local_date);
+		$day  = $start_day + 1 - $date['wday'];
+
+		while ($day > 1)
+		{
+			$day -= 7;
+		}
+
+		// Set the current month/year/day
+		// We use this to determine the "today" date
+		$cur_year	= date('Y', $local_time);
+		$cur_month	= date('m', $local_time);
+		$cur_day	= date('j', $local_time);
+
+		$is_current_month = ($cur_year == $year && $cur_month == $month);
+
+		// Generate the template data array
+		$this->parse_template();
+
+		// Begin building the calendar output
+		$out = $this->replacements['table_open']."\n\n".$this->replacements['heading_row_start']."\n";
+
+		// "previous" month link
+		if ($this->show_next_prev === TRUE)
+		{
+			// Add a trailing slash to the URL if needed
+			$this->next_prev_url = preg_replace('/(.+?)\/*$/', '\\1/', $this->next_prev_url);
+
+			$adjusted_date = $this->adjust_date($month - 1, $year);
+			$out .= str_replace('{previous_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->replacements['heading_previous_cell'])."\n";
+		}
+
+		// Heading containing the month/year
+		$colspan = ($this->show_next_prev === TRUE) ? 5 : 7;
+
+		$this->replacements['heading_title_cell'] = str_replace('{colspan}', $colspan,
+								str_replace('{heading}', $this->get_month_name($month).'&nbsp;'.$year, $this->replacements['heading_title_cell']));
+
+		$out .= $this->replacements['heading_title_cell']."\n";
+
+		// "next" month link
+		if ($this->show_next_prev === TRUE)
+		{
+			$adjusted_date = $this->adjust_date($month + 1, $year);
+			$out .= str_replace('{next_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->replacements['heading_next_cell']);
+		}
+
+		$out .= "\n".$this->replacements['heading_row_end']."\n\n"
+			// Write the cells containing the days of the week
+			.$this->replacements['week_row_start']."\n";
+
+		$day_names = $this->get_day_names();
+
+		for ($i = 0; $i < 7; $i ++)
+		{
+			$out .= str_replace('{week_day}', $day_names[($start_day + $i) %7], $this->replacements['week_day_cell']);
+		}
+
+		$out .= "\n".$this->replacements['week_row_end']."\n";
+
+		// Build the main body of the calendar
+		while ($day <= $total_days)
+		{
+			$out .= "\n".$this->replacements['cal_row_start']."\n";
+
+			for ($i = 0; $i < 7; $i++)
+			{
+				if ($day > 0 && $day <= $total_days)
+				{
+					$out .= ($is_current_month === TRUE && $day == $cur_day) ? $this->replacements['cal_cell_start_today'] : $this->replacements['cal_cell_start'];
+
+					if (isset($data[$day]))
+					{
+						// Cells with content
+						$temp = ($is_current_month === TRUE && $day == $cur_day) ?
+								$this->replacements['cal_cell_content_today'] : $this->replacements['cal_cell_content'];
+						$out .= str_replace(array('{content}', '{day}'), array($data[$day], $day), $temp);
+					}
+					else
+					{
+						// Cells with no content
+						$temp = ($is_current_month === TRUE && $day == $cur_day) ?
+								$this->replacements['cal_cell_no_content_today'] : $this->replacements['cal_cell_no_content'];
+						$out .= str_replace('{day}', $day, $temp);
+					}
+
+					$out .= ($is_current_month === TRUE && $day == $cur_day) ? $this->replacements['cal_cell_end_today'] : $this->replacements['cal_cell_end'];
+				}
+				elseif ($this->show_other_days === TRUE)
+				{
+					$out .= $this->replacements['cal_cell_start_other'];
+
+					if ($day <= 0)
+					{
+						// Day of previous month
+						$prev_month = $this->adjust_date($month - 1, $year);
+						$prev_month_days = $this->get_total_days($prev_month['month'], $prev_month['year']);
+						$out .= str_replace('{day}', $prev_month_days + $day, $this->replacements['cal_cell_other']);
+					}
+					else
+					{
+						// Day of next month
+						$out .= str_replace('{day}', $day - $total_days, $this->replacements['cal_cell_other']);
+					}
+
+					$out .= $this->replacements['cal_cell_end_other'];
+				}
+				else
+				{
+					// Blank cells
+					$out .= $this->replacements['cal_cell_start'].$this->replacements['cal_cell_blank'].$this->replacements['cal_cell_end'];
+				}
+
+				$day++;
+			}
+
+			$out .= "\n".$this->replacements['cal_row_end']."\n";
+		}
+
+		return $out .= "\n".$this->replacements['table_close'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Month Name
+	 *
+	 * Generates a textual month name based on the numeric
+	 * month provided.
+	 *
+	 * @param	int	the month
+	 * @return	string
+	 */
+	public function get_month_name($month)
+	{
+		if ($this->month_type === 'short')
+		{
+			$month_names = array('01' => 'cal_jan', '02' => 'cal_feb', '03' => 'cal_mar', '04' => 'cal_apr', '05' => 'cal_may', '06' => 'cal_jun', '07' => 'cal_jul', '08' => 'cal_aug', '09' => 'cal_sep', '10' => 'cal_oct', '11' => 'cal_nov', '12' => 'cal_dec');
+		}
+		else
+		{
+			$month_names = array('01' => 'cal_january', '02' => 'cal_february', '03' => 'cal_march', '04' => 'cal_april', '05' => 'cal_mayl', '06' => 'cal_june', '07' => 'cal_july', '08' => 'cal_august', '09' => 'cal_september', '10' => 'cal_october', '11' => 'cal_november', '12' => 'cal_december');
+		}
+
+		return ($this->CI->lang->line($month_names[$month]) === FALSE)
+			? ucfirst(substr($month_names[$month], 4))
+			: $this->CI->lang->line($month_names[$month]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Day Names
+	 *
+	 * Returns an array of day names (Sunday, Monday, etc.) based
+	 * on the type. Options: long, short, abr
+	 *
+	 * @param	string
+	 * @return	array
+	 */
+	public function get_day_names($day_type = '')
+	{
+		if ($day_type !== '')
+		{
+			$this->day_type = $day_type;
+		}
+
+		if ($this->day_type === 'long')
+		{
+			$day_names = array('sunday', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday');
+		}
+		elseif ($this->day_type === 'short')
+		{
+			$day_names = array('sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat');
+		}
+		else
+		{
+			$day_names = array('su', 'mo', 'tu', 'we', 'th', 'fr', 'sa');
+		}
+
+		$days = array();
+		for ($i = 0, $c = count($day_names); $i < $c; $i++)
+		{
+			$days[] = ($this->CI->lang->line('cal_'.$day_names[$i]) === FALSE) ? ucfirst($day_names[$i]) : $this->CI->lang->line('cal_'.$day_names[$i]);
+		}
+
+		return $days;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Adjust Date
+	 *
+	 * This function makes sure that we have a valid month/year.
+	 * For example, if you submit 13 as the month, the year will
+	 * increment and the month will become January.
+	 *
+	 * @param	int	the month
+	 * @param	int	the year
+	 * @return	array
+	 */
+	public function adjust_date($month, $year)
+	{
+		$date = array();
+
+		$date['month']	= $month;
+		$date['year']	= $year;
+
+		while ($date['month'] > 12)
+		{
+			$date['month'] -= 12;
+			$date['year']++;
+		}
+
+		while ($date['month'] <= 0)
+		{
+			$date['month'] += 12;
+			$date['year']--;
+		}
+
+		if (strlen($date['month']) === 1)
+		{
+			$date['month'] = '0'.$date['month'];
+		}
+
+		return $date;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Total days in a given month
+	 *
+	 * @param	int	the month
+	 * @param	int	the year
+	 * @return	int
+	 */
+	public function get_total_days($month, $year)
+	{
+		$this->CI->load->helper('date');
+		return days_in_month($month, $year);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Default Template Data
+	 *
+	 * This is used in the event that the user has not created their own template
+	 *
+	 * @return	array
+	 */
+	public function default_template()
+	{
+		return array(
+			'table_open'				=> '<table border="0" cellpadding="4" cellspacing="0">',
+			'heading_row_start'			=> '<tr>',
+			'heading_previous_cell'		=> '<th><a href="{previous_url}">&lt;&lt;</a></th>',
+			'heading_title_cell'		=> '<th colspan="{colspan}">{heading}</th>',
+			'heading_next_cell'			=> '<th><a href="{next_url}">&gt;&gt;</a></th>',
+			'heading_row_end'			=> '</tr>',
+			'week_row_start'			=> '<tr>',
+			'week_day_cell'				=> '<td>{week_day}</td>',
+			'week_row_end'				=> '</tr>',
+			'cal_row_start'				=> '<tr>',
+			'cal_cell_start'			=> '<td>',
+			'cal_cell_start_today'		=> '<td>',
+			'cal_cell_start_other'		=> '<td style="color: #666;">',
+			'cal_cell_content'			=> '<a href="{content}">{day}</a>',
+			'cal_cell_content_today'	=> '<a href="{content}"><strong>{day}</strong></a>',
+			'cal_cell_no_content'		=> '{day}',
+			'cal_cell_no_content_today'	=> '<strong>{day}</strong>',
+			'cal_cell_blank'			=> '&nbsp;',
+			'cal_cell_other'			=> '{day}',
+			'cal_cell_end'				=> '</td>',
+			'cal_cell_end_today'		=> '</td>',
+			'cal_cell_end_other'		=> '</td>',
+			'cal_row_end'				=> '</tr>',
+			'table_close'				=> '</table>'
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse Template
+	 *
+	 * Harvests the data within the template {pseudo-variables}
+	 * used to display the calendar
+	 *
+	 * @return	CI_Calendar
+	 */
+	public function parse_template()
+	{
+		$this->replacements = $this->default_template();
+
+		if (empty($this->template))
+		{
+			return $this;
+		}
+
+		if (is_string($this->template))
+		{
+			$today = array('cal_cell_start_today', 'cal_cell_content_today', 'cal_cell_no_content_today', 'cal_cell_end_today');
+
+			foreach (array('table_open', 'table_close', 'heading_row_start', 'heading_previous_cell', 'heading_title_cell', 'heading_next_cell', 'heading_row_end', 'week_row_start', 'week_day_cell', 'week_row_end', 'cal_row_start', 'cal_cell_start', 'cal_cell_content', 'cal_cell_no_content', 'cal_cell_blank', 'cal_cell_end', 'cal_row_end', 'cal_cell_start_today', 'cal_cell_content_today', 'cal_cell_no_content_today', 'cal_cell_end_today', 'cal_cell_start_other', 'cal_cell_other', 'cal_cell_end_other') as $val)
+			{
+				if (preg_match('/\{'.$val.'\}(.*?)\{\/'.$val.'\}/si', $this->template, $match))
+				{
+					$this->replacements[$val] = $match[1];
+				}
+				elseif (in_array($val, $today, TRUE))
+				{
+					$this->replacements[$val] = $this->replacements[substr($val, 0, -6)];
+				}
+			}
+		}
+		elseif (is_array($this->template))
+		{
+			$this->replacements = array_merge($this->replacements, $this->template);
+		}
+
+		return $this;
+	}
+
+}
diff --git a/system/libraries/Driver.php b/system/libraries/Driver.php
new file mode 100644
index 00000000..7e6cf4fa
--- /dev/null
+++ b/system/libraries/Driver.php
@@ -0,0 +1,342 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Driver Library Class
+ *
+ * This class enables you to create "Driver" libraries that add runtime ability
+ * to extend the capabilities of a class via additional driver objects
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Driver_Library {
+
+	/**
+	 * Array of drivers that are available to use with the driver class
+	 *
+	 * @var array
+	 */
+	protected $valid_drivers = array();
+
+	/**
+	 * Name of the current class - usually the driver class
+	 *
+	 * @var string
+	 */
+	protected $lib_name;
+
+	/**
+	 * Get magic method
+	 *
+	 * The first time a child is used it won't exist, so we instantiate it
+	 * subsequents calls will go straight to the proper child.
+	 *
+	 * @param	string	Child class name
+	 * @return	object	Child class
+	 */
+	public function __get($child)
+	{
+		// Try to load the driver
+		return $this->load_driver($child);
+	}
+
+	/**
+	 * Load driver
+	 *
+	 * Separate load_driver call to support explicit driver load by library or user
+	 *
+	 * @param	string	Driver name (w/o parent prefix)
+	 * @return	object	Child class
+	 */
+	public function load_driver($child)
+	{
+		// Get CodeIgniter instance and subclass prefix
+		$prefix = config_item('subclass_prefix');
+
+		if ( ! isset($this->lib_name))
+		{
+			// Get library name without any prefix
+			$this->lib_name = str_replace(array('CI_', $prefix), '', get_class($this));
+		}
+
+		// The child will be prefixed with the parent lib
+		$child_name = $this->lib_name.'_'.$child;
+
+		// See if requested child is a valid driver
+		if ( ! in_array($child, $this->valid_drivers))
+		{
+			// The requested driver isn't valid!
+			$msg = 'Invalid driver requested: '.$child_name;
+			log_message('error', $msg);
+			show_error($msg);
+		}
+
+		// Get package paths and filename case variations to search
+		$CI = get_instance();
+		$paths = $CI->load->get_package_paths(TRUE);
+
+		// Is there an extension?
+		$class_name = $prefix.$child_name;
+		$found = class_exists($class_name, FALSE);
+		if ( ! $found)
+		{
+			// Check for subclass file
+			foreach ($paths as $path)
+			{
+				// Does the file exist?
+				$file = $path.'libraries/'.$this->lib_name.'/drivers/'.$prefix.$child_name.'.php';
+				if (file_exists($file))
+				{
+					// Yes - require base class from BASEPATH
+					$basepath = BASEPATH.'libraries/'.$this->lib_name.'/drivers/'.$child_name.'.php';
+					if ( ! file_exists($basepath))
+					{
+						$msg = 'Unable to load the requested class: CI_'.$child_name;
+						log_message('error', $msg);
+						show_error($msg);
+					}
+
+					// Include both sources and mark found
+					include_once($basepath);
+					include_once($file);
+					$found = TRUE;
+					break;
+				}
+			}
+		}
+
+		// Do we need to search for the class?
+		if ( ! $found)
+		{
+			// Use standard class name
+			$class_name = 'CI_'.$child_name;
+			if ( ! class_exists($class_name, FALSE))
+			{
+				// Check package paths
+				foreach ($paths as $path)
+				{
+					// Does the file exist?
+					$file = $path.'libraries/'.$this->lib_name.'/drivers/'.$child_name.'.php';
+					if (file_exists($file))
+					{
+						// Include source
+						include_once($file);
+						break;
+					}
+				}
+			}
+		}
+
+		// Did we finally find the class?
+		if ( ! class_exists($class_name, FALSE))
+		{
+			if (class_exists($child_name, FALSE))
+			{
+				$class_name = $child_name;
+			}
+			else
+			{
+				$msg = 'Unable to load the requested driver: '.$class_name;
+				log_message('error', $msg);
+				show_error($msg);
+			}
+		}
+
+		// Instantiate, decorate and add child
+		$obj = new $class_name();
+		$obj->decorate($this);
+		$this->$child = $obj;
+		return $this->$child;
+	}
+
+}
+
+// --------------------------------------------------------------------------
+
+/**
+ * CodeIgniter Driver Class
+ *
+ * This class enables you to create drivers for a Library based on the Driver Library.
+ * It handles the drivers' access to the parent library
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link
+ */
+class CI_Driver {
+
+	/**
+	 * Instance of the parent class
+	 *
+	 * @var object
+	 */
+	protected $_parent;
+
+	/**
+	 * List of methods in the parent class
+	 *
+	 * @var array
+	 */
+	protected $_methods = array();
+
+	/**
+	 * List of properties in the parent class
+	 *
+	 * @var array
+	 */
+	protected $_properties = array();
+
+	/**
+	 * Array of methods and properties for the parent class(es)
+	 *
+	 * @static
+	 * @var	array
+	 */
+	protected static $_reflections = array();
+
+	/**
+	 * Decorate
+	 *
+	 * Decorates the child with the parent driver lib's methods and properties
+	 *
+	 * @param	object
+	 * @return	void
+	 */
+	public function decorate($parent)
+	{
+		$this->_parent = $parent;
+
+		// Lock down attributes to what is defined in the class
+		// and speed up references in magic methods
+
+		$class_name = get_class($parent);
+
+		if ( ! isset(self::$_reflections[$class_name]))
+		{
+			$r = new ReflectionObject($parent);
+
+			foreach ($r->getMethods() as $method)
+			{
+				if ($method->isPublic())
+				{
+					$this->_methods[] = $method->getName();
+				}
+			}
+
+			foreach ($r->getProperties() as $prop)
+			{
+				if ($prop->isPublic())
+				{
+					$this->_properties[] = $prop->getName();
+				}
+			}
+
+			self::$_reflections[$class_name] = array($this->_methods, $this->_properties);
+		}
+		else
+		{
+			list($this->_methods, $this->_properties) = self::$_reflections[$class_name];
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * __call magic method
+	 *
+	 * Handles access to the parent driver library's methods
+	 *
+	 * @param	string
+	 * @param	array
+	 * @return	mixed
+	 */
+	public function __call($method, $args = array())
+	{
+		if (in_array($method, $this->_methods))
+		{
+			return call_user_func_array(array($this->_parent, $method), $args);
+		}
+
+		throw new BadMethodCallException('No such method: '.$method.'()');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * __get magic method
+	 *
+	 * Handles reading of the parent driver library's properties
+	 *
+	 * @param	string
+	 * @return	mixed
+	 */
+	public function __get($var)
+	{
+		if (in_array($var, $this->_properties))
+		{
+			return $this->_parent->$var;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * __set magic method
+	 *
+	 * Handles writing to the parent driver library's properties
+	 *
+	 * @param	string
+	 * @param	array
+	 * @return	mixed
+	 */
+	public function __set($var, $val)
+	{
+		if (in_array($var, $this->_properties))
+		{
+			$this->_parent->$var = $val;
+		}
+	}
+
+}
diff --git a/system/libraries/Email.php b/system/libraries/Email.php
new file mode 100644
index 00000000..01f513b2
--- /dev/null
+++ b/system/libraries/Email.php
@@ -0,0 +1,2417 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Email Class
+ *
+ * Permits email to be sent using Mail, Sendmail, or SMTP.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/email.html
+ */
+class CI_Email {
+
+	/**
+	 * Used as the User-Agent and X-Mailer headers' value.
+	 *
+	 * @var	string
+	 */
+	public $useragent	= 'CodeIgniter';
+
+	/**
+	 * Path to the Sendmail binary.
+	 *
+	 * @var	string
+	 */
+	public $mailpath	= '/usr/sbin/sendmail';	// Sendmail path
+
+	/**
+	 * Which method to use for sending e-mails.
+	 *
+	 * @var	string	'mail', 'sendmail' or 'smtp'
+	 */
+	public $protocol	= 'mail';		// mail/sendmail/smtp
+
+	/**
+	 * STMP Server host
+	 *
+	 * @var	string
+	 */
+	public $smtp_host	= '';
+
+	/**
+	 * SMTP Username
+	 *
+	 * @var	string
+	 */
+	public $smtp_user	= '';
+
+	/**
+	 * SMTP Password
+	 *
+	 * @var	string
+	 */
+	public $smtp_pass	= '';
+
+	/**
+	 * SMTP Server port
+	 *
+	 * @var	int
+	 */
+	public $smtp_port	= 25;
+
+	/**
+	 * SMTP connection timeout in seconds
+	 *
+	 * @var	int
+	 */
+	public $smtp_timeout	= 5;
+
+	/**
+	 * SMTP persistent connection
+	 *
+	 * @var	bool
+	 */
+	public $smtp_keepalive	= FALSE;
+
+	/**
+	 * SMTP Encryption
+	 *
+	 * @var	string	empty, 'tls' or 'ssl'
+	 */
+	public $smtp_crypto	= '';
+
+	/**
+	 * Whether to apply word-wrapping to the message body.
+	 *
+	 * @var	bool
+	 */
+	public $wordwrap	= TRUE;
+
+	/**
+	 * Number of characters to wrap at.
+	 *
+	 * @see	CI_Email::$wordwrap
+	 * @var	int
+	 */
+	public $wrapchars	= 76;
+
+	/**
+	 * Message format.
+	 *
+	 * @var	string	'text' or 'html'
+	 */
+	public $mailtype	= 'text';
+
+	/**
+	 * Character set (default: utf-8)
+	 *
+	 * @var	string
+	 */
+	public $charset		= 'utf-8';
+
+	/**
+	 * Alternative message (for HTML messages only)
+	 *
+	 * @var	string
+	 */
+	public $alt_message	= '';
+
+	/**
+	 * Whether to validate e-mail addresses.
+	 *
+	 * @var	bool
+	 */
+	public $validate	= TRUE;
+
+	/**
+	 * X-Priority header value.
+	 *
+	 * @var	int	1-5
+	 */
+	public $priority	= 3;			// Default priority (1 - 5)
+
+	/**
+	 * Newline character sequence.
+	 * Use "\r\n" to comply with RFC 822.
+	 *
+	 * @link	https://www.ietf.org/rfc/rfc822.txt
+	 * @var	string	"\r\n" or "\n"
+	 */
+	public $newline		= "\n";			// Default newline. "\r\n" or "\n" (Use "\r\n" to comply with RFC 822)
+
+	/**
+	 * CRLF character sequence
+	 *
+	 * RFC 2045 specifies that for 'quoted-printable' encoding,
+	 * "\r\n" must be used. However, it appears that some servers
+	 * (even on the receiving end) don't handle it properly and
+	 * switching to "\n", while improper, is the only solution
+	 * that seems to work for all environments.
+	 *
+	 * @link	https://www.ietf.org/rfc/rfc822.txt
+	 * @var	string
+	 */
+	public $crlf		= "\n";
+
+	/**
+	 * Whether to use Delivery Status Notification.
+	 *
+	 * @var	bool
+	 */
+	public $dsn		= FALSE;
+
+	/**
+	 * Whether to send multipart alternatives.
+	 * Yahoo! doesn't seem to like these.
+	 *
+	 * @var	bool
+	 */
+	public $send_multipart	= TRUE;
+
+	/**
+	 * Whether to send messages to BCC recipients in batches.
+	 *
+	 * @var	bool
+	 */
+	public $bcc_batch_mode	= FALSE;
+
+	/**
+	 * BCC Batch max number size.
+	 *
+	 * @see	CI_Email::$bcc_batch_mode
+	 * @var	int
+	 */
+	public $bcc_batch_size	= 200;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Subject header
+	 *
+	 * @var	string
+	 */
+	protected $_subject		= '';
+
+	/**
+	 * Message body
+	 *
+	 * @var	string
+	 */
+	protected $_body		= '';
+
+	/**
+	 * Final message body to be sent.
+	 *
+	 * @var	string
+	 */
+	protected $_finalbody		= '';
+
+	/**
+	 * Final headers to send
+	 *
+	 * @var	string
+	 */
+	protected $_header_str		= '';
+
+	/**
+	 * SMTP Connection socket placeholder
+	 *
+	 * @var	resource
+	 */
+	protected $_smtp_connect	= '';
+
+	/**
+	 * Mail encoding
+	 *
+	 * @var	string	'8bit' or '7bit'
+	 */
+	protected $_encoding		= '8bit';
+
+	/**
+	 * Whether to perform SMTP authentication
+	 *
+	 * @var	bool
+	 */
+	protected $_smtp_auth		= FALSE;
+
+	/**
+	 * Whether to send a Reply-To header
+	 *
+	 * @var	bool
+	 */
+	protected $_replyto_flag	= FALSE;
+
+	/**
+	 * Debug messages
+	 *
+	 * @see	CI_Email::print_debugger()
+	 * @var	string
+	 */
+	protected $_debug_msg		= array();
+
+	/**
+	 * Recipients
+	 *
+	 * @var	string[]
+	 */
+	protected $_recipients		= array();
+
+	/**
+	 * CC Recipients
+	 *
+	 * @var	string[]
+	 */
+	protected $_cc_array		= array();
+
+	/**
+	 * BCC Recipients
+	 *
+	 * @var	string[]
+	 */
+	protected $_bcc_array		= array();
+
+	/**
+	 * Message headers
+	 *
+	 * @var	string[]
+	 */
+	protected $_headers		= array();
+
+	/**
+	 * Attachment data
+	 *
+	 * @var	array
+	 */
+	protected $_attachments		= array();
+
+	/**
+	 * Valid $protocol values
+	 *
+	 * @see	CI_Email::$protocol
+	 * @var	string[]
+	 */
+	protected $_protocols		= array('mail', 'sendmail', 'smtp');
+
+	/**
+	 * Base charsets
+	 *
+	 * Character sets valid for 7-bit encoding,
+	 * excluding language suffix.
+	 *
+	 * @var	string[]
+	 */
+	protected $_base_charsets	= array('us-ascii', 'iso-2022-');
+
+	/**
+	 * Bit depths
+	 *
+	 * Valid mail encodings
+	 *
+	 * @see	CI_Email::$_encoding
+	 * @var	string[]
+	 */
+	protected $_bit_depths		= array('7bit', '8bit');
+
+	/**
+	 * $priority translations
+	 *
+	 * Actual values to send with the X-Priority header
+	 *
+	 * @var	string[]
+	 */
+	protected $_priorities = array(
+		1 => '1 (Highest)',
+		2 => '2 (High)',
+		3 => '3 (Normal)',
+		4 => '4 (Low)',
+		5 => '5 (Lowest)'
+	);
+
+	/**
+	 * mbstring.func_overload flag
+	 *
+	 * @var	bool
+	 */
+	protected static $func_overload;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor - Sets Email Preferences
+	 *
+	 * The constructor can be passed an array of config values
+	 *
+	 * @param	array	$config = array()
+	 * @return	void
+	 */
+	public function __construct(array $config = array())
+	{
+		$this->charset = config_item('charset');
+		$this->initialize($config);
+
+		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+
+		log_message('info', 'Email Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize preferences
+	 *
+	 * @param	array	$config
+	 * @return	CI_Email
+	 */
+	public function initialize(array $config = array())
+	{
+		$this->clear();
+
+		foreach ($config as $key => $val)
+		{
+			if (isset($this->$key))
+			{
+				$method = 'set_'.$key;
+
+				if (method_exists($this, $method))
+				{
+					$this->$method($val);
+				}
+				else
+				{
+					$this->$key = $val;
+				}
+			}
+		}
+
+		$this->charset = strtoupper($this->charset);
+		$this->_smtp_auth = isset($this->smtp_user[0], $this->smtp_pass[0]);
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize the Email Data
+	 *
+	 * @param	bool
+	 * @return	CI_Email
+	 */
+	public function clear($clear_attachments = FALSE)
+	{
+		$this->_subject		= '';
+		$this->_body		= '';
+		$this->_finalbody	= '';
+		$this->_header_str	= '';
+		$this->_replyto_flag	= FALSE;
+		$this->_recipients	= array();
+		$this->_cc_array	= array();
+		$this->_bcc_array	= array();
+		$this->_headers		= array();
+		$this->_debug_msg	= array();
+
+		$this->set_header('Date', $this->_set_date());
+
+		if ($clear_attachments !== FALSE)
+		{
+			$this->_attachments = array();
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set FROM
+	 *
+	 * @param	string	$from
+	 * @param	string	$name
+	 * @param	string	$return_path = NULL	Return-Path
+	 * @return	CI_Email
+	 */
+	public function from($from, $name = '', $return_path = NULL)
+	{
+		if (preg_match('/\<(.*)\>/', $from, $match))
+		{
+			$from = $match[1];
+		}
+
+		if ($this->validate)
+		{
+			$this->validate_email($this->_str_to_array($from));
+			if ($return_path)
+			{
+				$this->validate_email($this->_str_to_array($return_path));
+			}
+		}
+
+		// prepare the display name
+		if ($name !== '')
+		{
+			// only use Q encoding if there are characters that would require it
+			if ( ! preg_match('/[\200-\377]/', $name))
+			{
+				// add slashes for non-printing characters, slashes, and double quotes, and surround it in double quotes
+				$name = '"'.addcslashes($name, "\0..\37\177'\"\\").'"';
+			}
+			else
+			{
+				$name = $this->_prep_q_encoding($name);
+			}
+		}
+
+		$this->set_header('From', $name.' <'.$from.'>');
+
+		isset($return_path) OR $return_path = $from;
+		$this->set_header('Return-Path', '<'.$return_path.'>');
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Reply-to
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function reply_to($replyto, $name = '')
+	{
+		if (preg_match('/\<(.*)\>/', $replyto, $match))
+		{
+			$replyto = $match[1];
+		}
+
+		if ($this->validate)
+		{
+			$this->validate_email($this->_str_to_array($replyto));
+		}
+
+		if ($name !== '')
+		{
+			// only use Q encoding if there are characters that would require it
+			if ( ! preg_match('/[\200-\377]/', $name))
+			{
+				// add slashes for non-printing characters, slashes, and double quotes, and surround it in double quotes
+				$name = '"'.addcslashes($name, "\0..\37\177'\"\\").'"';
+			}
+			else
+			{
+				$name = $this->_prep_q_encoding($name);
+			}
+		}
+
+		$this->set_header('Reply-To', $name.' <'.$replyto.'>');
+		$this->_replyto_flag = TRUE;
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Recipients
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function to($to)
+	{
+		$to = $this->_str_to_array($to);
+		$to = $this->clean_email($to);
+
+		if ($this->validate)
+		{
+			$this->validate_email($to);
+		}
+
+		if ($this->_get_protocol() !== 'mail')
+		{
+			$this->set_header('To', implode(', ', $to));
+		}
+
+		$this->_recipients = $to;
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set CC
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function cc($cc)
+	{
+		$cc = $this->clean_email($this->_str_to_array($cc));
+
+		if ($this->validate)
+		{
+			$this->validate_email($cc);
+		}
+
+		$this->set_header('Cc', implode(', ', $cc));
+
+		if ($this->_get_protocol() === 'smtp')
+		{
+			$this->_cc_array = $cc;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set BCC
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function bcc($bcc, $limit = '')
+	{
+		if ($limit !== '' && is_numeric($limit))
+		{
+			$this->bcc_batch_mode = TRUE;
+			$this->bcc_batch_size = $limit;
+		}
+
+		$bcc = $this->clean_email($this->_str_to_array($bcc));
+
+		if ($this->validate)
+		{
+			$this->validate_email($bcc);
+		}
+
+		if ($this->_get_protocol() === 'smtp' OR ($this->bcc_batch_mode && count($bcc) > $this->bcc_batch_size))
+		{
+			$this->_bcc_array = $bcc;
+		}
+		else
+		{
+			$this->set_header('Bcc', implode(', ', $bcc));
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Email Subject
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function subject($subject)
+	{
+		$subject = $this->_prep_q_encoding($subject);
+		$this->set_header('Subject', $subject);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Body
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function message($body)
+	{
+		$this->_body = rtrim(str_replace("\r", '', $body));
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Assign file attachments
+	 *
+	 * @param	string	$file	Can be local path, URL or buffered content
+	 * @param	string	$disposition = 'attachment'
+	 * @param	string	$newname = NULL
+	 * @param	string	$mime = ''
+	 * @return	CI_Email
+	 */
+	public function attach($file, $disposition = '', $newname = NULL, $mime = '')
+	{
+		if ($mime === '')
+		{
+			if (strpos($file, '://') === FALSE && ! file_exists($file))
+			{
+				$this->_set_error_message('lang:email_attachment_missing', $file);
+				return FALSE;
+			}
+
+			if ( ! $fp = @fopen($file, 'rb'))
+			{
+				$this->_set_error_message('lang:email_attachment_unreadable', $file);
+				return FALSE;
+			}
+
+			$file_content = stream_get_contents($fp);
+			$mime = $this->_mime_types(pathinfo($file, PATHINFO_EXTENSION));
+			fclose($fp);
+		}
+		else
+		{
+			$file_content =& $file; // buffered file
+		}
+
+		$this->_attachments[] = array(
+			'name'		=> array($file, $newname),
+			'disposition'	=> empty($disposition) ? 'attachment' : $disposition,  // Can also be 'inline'  Not sure if it matters
+			'type'		=> $mime,
+			'content'	=> chunk_split(base64_encode($file_content)),
+			'multipart'	=> 'mixed'
+		);
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set and return attachment Content-ID
+	 *
+	 * Useful for attached inline pictures
+	 *
+	 * @param	string	$filename
+	 * @return	string
+	 */
+	public function attachment_cid($filename)
+	{
+		for ($i = 0, $c = count($this->_attachments); $i < $c; $i++)
+		{
+			if ($this->_attachments[$i]['name'][0] === $filename)
+			{
+				$this->_attachments[$i]['multipart'] = 'related';
+				$this->_attachments[$i]['cid'] = uniqid(basename($this->_attachments[$i]['name'][0]).'@');
+				return $this->_attachments[$i]['cid'];
+			}
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add a Header Item
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function set_header($header, $value)
+	{
+		$this->_headers[$header] = str_replace(array("\n", "\r"), '', $value);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Convert a String to an Array
+	 *
+	 * @param	string
+	 * @return	array
+	 */
+	protected function _str_to_array($email)
+	{
+		if ( ! is_array($email))
+		{
+			return (strpos($email, ',') !== FALSE)
+				? preg_split('/[\s,]/', $email, -1, PREG_SPLIT_NO_EMPTY)
+				: (array) trim($email);
+		}
+
+		return $email;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Multipart Value
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function set_alt_message($str)
+	{
+		$this->alt_message = (string) $str;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Mailtype
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function set_mailtype($type = 'text')
+	{
+		$this->mailtype = ($type === 'html') ? 'html' : 'text';
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Wordwrap
+	 *
+	 * @param	bool
+	 * @return	CI_Email
+	 */
+	public function set_wordwrap($wordwrap = TRUE)
+	{
+		$this->wordwrap = (bool) $wordwrap;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Protocol
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function set_protocol($protocol = 'mail')
+	{
+		$this->protocol = in_array($protocol, $this->_protocols, TRUE) ? strtolower($protocol) : 'mail';
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Priority
+	 *
+	 * @param	int
+	 * @return	CI_Email
+	 */
+	public function set_priority($n = 3)
+	{
+		$this->priority = preg_match('/^[1-5]$/', $n) ? (int) $n : 3;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Newline Character
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function set_newline($newline = "\n")
+	{
+		$this->newline = in_array($newline, array("\n", "\r\n", "\r")) ? $newline : "\n";
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set CRLF
+	 *
+	 * @param	string
+	 * @return	CI_Email
+	 */
+	public function set_crlf($crlf = "\n")
+	{
+		$this->crlf = ($crlf !== "\n" && $crlf !== "\r\n" && $crlf !== "\r") ? "\n" : $crlf;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the Message ID
+	 *
+	 * @return	string
+	 */
+	protected function _get_message_id()
+	{
+		$from = str_replace(array('>', '<'), '', $this->_headers['Return-Path']);
+		return '<'.uniqid('').strstr($from, '@').'>';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Mail Protocol
+	 *
+	 * @return	mixed
+	 */
+	protected function _get_protocol()
+	{
+		$this->protocol = strtolower($this->protocol);
+		in_array($this->protocol, $this->_protocols, TRUE) OR $this->protocol = 'mail';
+		return $this->protocol;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Mail Encoding
+	 *
+	 * @return	string
+	 */
+	protected function _get_encoding()
+	{
+		in_array($this->_encoding, $this->_bit_depths) OR $this->_encoding = '8bit';
+
+		foreach ($this->_base_charsets as $charset)
+		{
+			if (strpos($this->charset, $charset) === 0)
+			{
+				$this->_encoding = '7bit';
+			}
+		}
+
+		return $this->_encoding;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get content type (text/html/attachment)
+	 *
+	 * @return	string
+	 */
+	protected function _get_content_type()
+	{
+		if ($this->mailtype === 'html')
+		{
+			return empty($this->_attachments) ? 'html' : 'html-attach';
+		}
+		elseif	($this->mailtype === 'text' && ! empty($this->_attachments))
+		{
+			return 'plain-attach';
+		}
+
+		return 'plain';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set RFC 822 Date
+	 *
+	 * @return	string
+	 */
+	protected function _set_date()
+	{
+		$timezone = date('Z');
+		$operator = ($timezone[0] === '-') ? '-' : '+';
+		$timezone = abs($timezone);
+		$timezone = floor($timezone/3600) * 100 + ($timezone % 3600) / 60;
+
+		return sprintf('%s %s%04d', date('D, j M Y H:i:s'), $operator, $timezone);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Mime message
+	 *
+	 * @return	string
+	 */
+	protected function _get_mime_message()
+	{
+		return 'This is a multi-part message in MIME format.'.$this->newline.'Your email application may not support this format.';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate Email Address
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function validate_email($email)
+	{
+		if ( ! is_array($email))
+		{
+			$this->_set_error_message('lang:email_must_be_array');
+			return FALSE;
+		}
+
+		foreach ($email as $val)
+		{
+			if ( ! $this->valid_email($val))
+			{
+				$this->_set_error_message('lang:email_invalid_address', $val);
+				return FALSE;
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Email Validation
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function valid_email($email)
+	{
+		if (function_exists('idn_to_ascii') && preg_match('#\A([^@]+)@(.+)\z#', $email, $matches))
+		{
+			$domain = defined('INTL_IDNA_VARIANT_UTS46')
+				? idn_to_ascii($matches[2], 0, INTL_IDNA_VARIANT_UTS46)
+				: idn_to_ascii($matches[2]);
+
+			if ($domain !== FALSE)
+			{
+				$email = $matches[1].'@'.$domain;
+			}
+		}
+
+		return (bool) filter_var($email, FILTER_VALIDATE_EMAIL);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Clean Extended Email Address: Joe Smith <joe@smith.com>
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function clean_email($email)
+	{
+		if ( ! is_array($email))
+		{
+			return preg_match('/\<(.*)\>/', $email, $match) ? $match[1] : $email;
+		}
+
+		$clean_email = array();
+
+		foreach ($email as $addy)
+		{
+			$clean_email[] = preg_match('/\<(.*)\>/', $addy, $match) ? $match[1] : $addy;
+		}
+
+		return $clean_email;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Build alternative plain text message
+	 *
+	 * Provides the raw message for use in plain-text headers of
+	 * HTML-formatted emails.
+	 * If the user hasn't specified his own alternative message
+	 * it creates one by stripping the HTML
+	 *
+	 * @return	string
+	 */
+	protected function _get_alt_message()
+	{
+		if ( ! empty($this->alt_message))
+		{
+			return ($this->wordwrap)
+				? $this->word_wrap($this->alt_message, 76)
+				: $this->alt_message;
+		}
+
+		$body = preg_match('/\<body.*?\>(.*)\<\/body\>/si', $this->_body, $match) ? $match[1] : $this->_body;
+		$body = str_replace("\t", '', preg_replace('#<!--(.*)--\>#', '', trim(strip_tags($body))));
+
+		for ($i = 20; $i >= 3; $i--)
+		{
+			$body = str_replace(str_repeat("\n", $i), "\n\n", $body);
+		}
+
+		// Reduce multiple spaces
+		$body = preg_replace('| +|', ' ', $body);
+
+		return ($this->wordwrap)
+			? $this->word_wrap($body, 76)
+			: $body;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Word Wrap
+	 *
+	 * @param	string
+	 * @param	int	line-length limit
+	 * @return	string
+	 */
+	public function word_wrap($str, $charlim = NULL)
+	{
+		// Set the character limit, if not already present
+		if (empty($charlim))
+		{
+			$charlim = empty($this->wrapchars) ? 76 : $this->wrapchars;
+		}
+
+		// Standardize newlines
+		if (strpos($str, "\r") !== FALSE)
+		{
+			$str = str_replace(array("\r\n", "\r"), "\n", $str);
+		}
+
+		// Reduce multiple spaces at end of line
+		$str = preg_replace('| +\n|', "\n", $str);
+
+		// If the current word is surrounded by {unwrap} tags we'll
+		// strip the entire chunk and replace it with a marker.
+		$unwrap = array();
+		if (preg_match_all('|\{unwrap\}(.+?)\{/unwrap\}|s', $str, $matches))
+		{
+			for ($i = 0, $c = count($matches[0]); $i < $c; $i++)
+			{
+				$unwrap[] = $matches[1][$i];
+				$str = str_replace($matches[0][$i], '{{unwrapped'.$i.'}}', $str);
+			}
+		}
+
+		// Use PHP's native function to do the initial wordwrap.
+		// We set the cut flag to FALSE so that any individual words that are
+		// too long get left alone. In the next step we'll deal with them.
+		$str = wordwrap($str, $charlim, "\n", FALSE);
+
+		// Split the string into individual lines of text and cycle through them
+		$output = '';
+		foreach (explode("\n", $str) as $line)
+		{
+			// Is the line within the allowed character count?
+			// If so we'll join it to the output and continue
+			if (self::strlen($line) <= $charlim)
+			{
+				$output .= $line.$this->newline;
+				continue;
+			}
+
+			$temp = '';
+			do
+			{
+				// If the over-length word is a URL we won't wrap it
+				if (preg_match('!\[url.+\]|://|www\.!', $line))
+				{
+					break;
+				}
+
+				// Trim the word down
+				$temp .= self::substr($line, 0, $charlim - 1);
+				$line = self::substr($line, $charlim - 1);
+			}
+			while (self::strlen($line) > $charlim);
+
+			// If $temp contains data it means we had to split up an over-length
+			// word into smaller chunks so we'll add it back to our current line
+			if ($temp !== '')
+			{
+				$output .= $temp.$this->newline;
+			}
+
+			$output .= $line.$this->newline;
+		}
+
+		// Put our markers back
+		if (count($unwrap) > 0)
+		{
+			foreach ($unwrap as $key => $val)
+			{
+				$output = str_replace('{{unwrapped'.$key.'}}', $val, $output);
+			}
+		}
+
+		return $output;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Build final headers
+	 *
+	 * @return	void
+	 */
+	protected function _build_headers()
+	{
+		$this->set_header('User-Agent', $this->useragent);
+		$this->set_header('X-Sender', $this->clean_email($this->_headers['From']));
+		$this->set_header('X-Mailer', $this->useragent);
+		$this->set_header('X-Priority', $this->_priorities[$this->priority]);
+		$this->set_header('Message-ID', $this->_get_message_id());
+		$this->set_header('Mime-Version', '1.0');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Write Headers as a string
+	 *
+	 * @return	void
+	 */
+	protected function _write_headers()
+	{
+		if ($this->protocol === 'mail')
+		{
+			if (isset($this->_headers['Subject']))
+			{
+				$this->_subject = $this->_headers['Subject'];
+				unset($this->_headers['Subject']);
+			}
+		}
+
+		reset($this->_headers);
+		$this->_header_str = '';
+
+		foreach ($this->_headers as $key => $val)
+		{
+			$val = trim($val);
+
+			if ($val !== '')
+			{
+				$this->_header_str .= $key.': '.$val.$this->newline;
+			}
+		}
+
+		if ($this->_get_protocol() === 'mail')
+		{
+			$this->_header_str = rtrim($this->_header_str);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Build Final Body and attachments
+	 *
+	 * @return	void
+	 */
+	protected function _build_message()
+	{
+		if ($this->wordwrap === TRUE && $this->mailtype !== 'html')
+		{
+			$this->_body = $this->word_wrap($this->_body);
+		}
+
+		$this->_write_headers();
+
+		$hdr = ($this->_get_protocol() === 'mail') ? $this->newline : '';
+		$body = '';
+
+		switch ($this->_get_content_type())
+		{
+			case 'plain':
+
+				$hdr .= 'Content-Type: text/plain; charset='.$this->charset.$this->newline
+					.'Content-Transfer-Encoding: '.$this->_get_encoding();
+
+				if ($this->_get_protocol() === 'mail')
+				{
+					$this->_header_str .= $hdr;
+					$this->_finalbody = $this->_body;
+				}
+				else
+				{
+					$this->_finalbody = $hdr.$this->newline.$this->newline.$this->_body;
+				}
+
+				return;
+
+			case 'html':
+
+				if ($this->send_multipart === FALSE)
+				{
+					$hdr .= 'Content-Type: text/html; charset='.$this->charset.$this->newline
+						.'Content-Transfer-Encoding: quoted-printable';
+				}
+				else
+				{
+					$boundary = uniqid('B_ALT_');
+					$hdr .= 'Content-Type: multipart/alternative; boundary="'.$boundary.'"';
+
+					$body .= $this->_get_mime_message().$this->newline.$this->newline
+						.'--'.$boundary.$this->newline
+
+						.'Content-Type: text/plain; charset='.$this->charset.$this->newline
+						.'Content-Transfer-Encoding: '.$this->_get_encoding().$this->newline.$this->newline
+						.$this->_get_alt_message().$this->newline.$this->newline
+						.'--'.$boundary.$this->newline
+
+						.'Content-Type: text/html; charset='.$this->charset.$this->newline
+						.'Content-Transfer-Encoding: quoted-printable'.$this->newline.$this->newline;
+				}
+
+				$this->_finalbody = $body.$this->_prep_quoted_printable($this->_body).$this->newline.$this->newline;
+
+				if ($this->_get_protocol() === 'mail')
+				{
+					$this->_header_str .= $hdr;
+				}
+				else
+				{
+					$this->_finalbody = $hdr.$this->newline.$this->newline.$this->_finalbody;
+				}
+
+				if ($this->send_multipart !== FALSE)
+				{
+					$this->_finalbody .= '--'.$boundary.'--';
+				}
+
+				return;
+
+			case 'plain-attach':
+
+				$boundary = uniqid('B_ATC_');
+				$hdr .= 'Content-Type: multipart/mixed; boundary="'.$boundary.'"';
+
+				if ($this->_get_protocol() === 'mail')
+				{
+					$this->_header_str .= $hdr;
+				}
+
+				$body .= $this->_get_mime_message().$this->newline
+					.$this->newline
+					.'--'.$boundary.$this->newline
+					.'Content-Type: text/plain; charset='.$this->charset.$this->newline
+					.'Content-Transfer-Encoding: '.$this->_get_encoding().$this->newline
+					.$this->newline
+					.$this->_body.$this->newline.$this->newline;
+
+				$this->_append_attachments($body, $boundary);
+
+				break;
+			case 'html-attach':
+
+				$alt_boundary = uniqid('B_ALT_');
+				$last_boundary = NULL;
+
+				if ($this->_attachments_have_multipart('mixed'))
+				{
+					$atc_boundary = uniqid('B_ATC_');
+					$hdr .= 'Content-Type: multipart/mixed; boundary="'.$atc_boundary.'"';
+					$last_boundary = $atc_boundary;
+				}
+
+				if ($this->_attachments_have_multipart('related'))
+				{
+					$rel_boundary = uniqid('B_REL_');
+					$rel_boundary_header = 'Content-Type: multipart/related; boundary="'.$rel_boundary.'"';
+
+					if (isset($last_boundary))
+					{
+						$body .= '--'.$last_boundary.$this->newline.$rel_boundary_header;
+					}
+					else
+					{
+						$hdr .= $rel_boundary_header;
+					}
+
+					$last_boundary = $rel_boundary;
+				}
+
+				if ($this->_get_protocol() === 'mail')
+				{
+					$this->_header_str .= $hdr;
+				}
+
+				self::strlen($body) && $body .= $this->newline.$this->newline;
+				$body .= $this->_get_mime_message().$this->newline.$this->newline
+					.'--'.$last_boundary.$this->newline
+
+					.'Content-Type: multipart/alternative; boundary="'.$alt_boundary.'"'.$this->newline.$this->newline
+					.'--'.$alt_boundary.$this->newline
+
+					.'Content-Type: text/plain; charset='.$this->charset.$this->newline
+					.'Content-Transfer-Encoding: '.$this->_get_encoding().$this->newline.$this->newline
+					.$this->_get_alt_message().$this->newline.$this->newline
+					.'--'.$alt_boundary.$this->newline
+
+					.'Content-Type: text/html; charset='.$this->charset.$this->newline
+					.'Content-Transfer-Encoding: quoted-printable'.$this->newline.$this->newline
+
+					.$this->_prep_quoted_printable($this->_body).$this->newline.$this->newline
+					.'--'.$alt_boundary.'--'.$this->newline.$this->newline;
+
+				if ( ! empty($rel_boundary))
+				{
+					$body .= $this->newline.$this->newline;
+					$this->_append_attachments($body, $rel_boundary, 'related');
+				}
+
+				// multipart/mixed attachments
+				if ( ! empty($atc_boundary))
+				{
+					$body .= $this->newline.$this->newline;
+					$this->_append_attachments($body, $atc_boundary, 'mixed');
+				}
+
+				break;
+		}
+
+		$this->_finalbody = ($this->_get_protocol() === 'mail')
+			? $body
+			: $hdr.$this->newline.$this->newline.$body;
+	}
+
+	// --------------------------------------------------------------------
+
+	protected function _attachments_have_multipart($type)
+	{
+		foreach ($this->_attachments as &$attachment)
+		{
+			if ($attachment['multipart'] === $type)
+			{
+				return TRUE;
+			}
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prepares attachment string
+	 *
+	 * @param	string	$body		Message body to append to
+	 * @param	string	$boundary	Multipart boundary
+	 * @param	string	$multipart	When provided, only attachments of this type will be processed
+	 * @return	string
+	 */
+	protected function _append_attachments(&$body, $boundary, $multipart = null)
+	{
+		for ($i = 0, $c = count($this->_attachments); $i < $c; $i++)
+		{
+			if (isset($multipart) && $this->_attachments[$i]['multipart'] !== $multipart)
+			{
+				continue;
+			}
+
+			$name = isset($this->_attachments[$i]['name'][1])
+				? $this->_attachments[$i]['name'][1]
+				: basename($this->_attachments[$i]['name'][0]);
+
+			$body .= '--'.$boundary.$this->newline
+				.'Content-Type: '.$this->_attachments[$i]['type'].'; name="'.$name.'"'.$this->newline
+				.'Content-Disposition: '.$this->_attachments[$i]['disposition'].';'.$this->newline
+				.'Content-Transfer-Encoding: base64'.$this->newline
+				.(empty($this->_attachments[$i]['cid']) ? '' : 'Content-ID: <'.$this->_attachments[$i]['cid'].'>'.$this->newline)
+				.$this->newline
+				.$this->_attachments[$i]['content'].$this->newline;
+		}
+
+		// $name won't be set if no attachments were appended,
+		// and therefore a boundary wouldn't be necessary
+		empty($name) OR $body .= '--'.$boundary.'--';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep Quoted Printable
+	 *
+	 * Prepares string for Quoted-Printable Content-Transfer-Encoding
+	 * Refer to RFC 2045 https://www.ietf.org/rfc/rfc2045.txt
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _prep_quoted_printable($str)
+	{
+		// ASCII code numbers for "safe" characters that can always be
+		// used literally, without encoding, as described in RFC 2049.
+		// https://www.ietf.org/rfc/rfc2049.txt
+		static $ascii_safe_chars = array(
+			// ' (  )   +   ,   -   .   /   :   =   ?
+			39, 40, 41, 43, 44, 45, 46, 47, 58, 61, 63,
+			// numbers
+			48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
+			// upper-case letters
+			65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90,
+			// lower-case letters
+			97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122
+		);
+
+		// We are intentionally wrapping so mail servers will encode characters
+		// properly and MUAs will behave, so {unwrap} must go!
+		$str = str_replace(array('{unwrap}', '{/unwrap}'), '', $str);
+
+		// RFC 2045 specifies CRLF as "\r\n".
+		// However, many developers choose to override that and violate
+		// the RFC rules due to (apparently) a bug in MS Exchange,
+		// which only works with "\n".
+		if ($this->crlf === "\r\n")
+		{
+			return quoted_printable_encode($str);
+		}
+
+		// Reduce multiple spaces & remove nulls
+		$str = preg_replace(array('| +|', '/\x00+/'), array(' ', ''), $str);
+
+		// Standardize newlines
+		if (strpos($str, "\r") !== FALSE)
+		{
+			$str = str_replace(array("\r\n", "\r"), "\n", $str);
+		}
+
+		$escape = '=';
+		$output = '';
+
+		foreach (explode("\n", $str) as $line)
+		{
+			$length = self::strlen($line);
+			$temp = '';
+
+			// Loop through each character in the line to add soft-wrap
+			// characters at the end of a line " =\r\n" and add the newly
+			// processed line(s) to the output (see comment on $crlf class property)
+			for ($i = 0; $i < $length; $i++)
+			{
+				// Grab the next character
+				$char = $line[$i];
+				$ascii = ord($char);
+
+				// Convert spaces and tabs but only if it's the end of the line
+				if ($ascii === 32 OR $ascii === 9)
+				{
+					if ($i === ($length - 1))
+					{
+						$char = $escape.sprintf('%02s', dechex($ascii));
+					}
+				}
+				// DO NOT move this below the $ascii_safe_chars line!
+				//
+				// = (equals) signs are allowed by RFC2049, but must be encoded
+				// as they are the encoding delimiter!
+				elseif ($ascii === 61)
+				{
+					$char = $escape.strtoupper(sprintf('%02s', dechex($ascii)));  // =3D
+				}
+				elseif ( ! in_array($ascii, $ascii_safe_chars, TRUE))
+				{
+					$char = $escape.strtoupper(sprintf('%02s', dechex($ascii)));
+				}
+
+				// If we're at the character limit, add the line to the output,
+				// reset our temp variable, and keep on chuggin'
+				if ((self::strlen($temp) + self::strlen($char)) >= 76)
+				{
+					$output .= $temp.$escape.$this->crlf;
+					$temp = '';
+				}
+
+				// Add the character to our temporary line
+				$temp .= $char;
+			}
+
+			// Add our completed line to the output
+			$output .= $temp.$this->crlf;
+		}
+
+		// get rid of extra CRLF tacked onto the end
+		return self::substr($output, 0, self::strlen($this->crlf) * -1);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep Q Encoding
+	 *
+	 * Performs "Q Encoding" on a string for use in email headers.
+	 * It's related but not identical to quoted-printable, so it has its
+	 * own method.
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _prep_q_encoding($str)
+	{
+		$str = str_replace(array("\r", "\n"), '', $str);
+
+		if ($this->charset === 'UTF-8')
+		{
+			// Note: We used to have mb_encode_mimeheader() as the first choice
+			//       here, but it turned out to be buggy and unreliable. DO NOT
+			//       re-add it! -- Narf
+			if (ICONV_ENABLED === TRUE)
+			{
+				$output = @iconv_mime_encode('', $str,
+					array(
+						'scheme' => 'Q',
+						'line-length' => 76,
+						'input-charset' => $this->charset,
+						'output-charset' => $this->charset,
+						'line-break-chars' => $this->crlf
+					)
+				);
+
+				// There are reports that iconv_mime_encode() might fail and return FALSE
+				if ($output !== FALSE)
+				{
+					// iconv_mime_encode() will always put a header field name.
+					// We've passed it an empty one, but it still prepends our
+					// encoded string with ': ', so we need to strip it.
+					return self::substr($output, 2);
+				}
+
+				$chars = iconv_strlen($str, 'UTF-8');
+			}
+			elseif (MB_ENABLED === TRUE)
+			{
+				$chars = mb_strlen($str, 'UTF-8');
+			}
+		}
+
+		// We might already have this set for UTF-8
+		isset($chars) OR $chars = self::strlen($str);
+
+		$output = '=?'.$this->charset.'?Q?';
+		for ($i = 0, $length = self::strlen($output); $i < $chars; $i++)
+		{
+			$chr = ($this->charset === 'UTF-8' && ICONV_ENABLED === TRUE)
+				? '='.implode('=', str_split(strtoupper(bin2hex(iconv_substr($str, $i, 1, $this->charset))), 2))
+				: '='.strtoupper(bin2hex($str[$i]));
+
+			// RFC 2045 sets a limit of 76 characters per line.
+			// We'll append ?= to the end of each line though.
+			if ($length + ($l = self::strlen($chr)) > 74)
+			{
+				$output .= '?='.$this->crlf // EOL
+					.' =?'.$this->charset.'?Q?'.$chr; // New line
+				$length = 6 + self::strlen($this->charset) + $l; // Reset the length for the new line
+			}
+			else
+			{
+				$output .= $chr;
+				$length += $l;
+			}
+		}
+
+		// End the header
+		return $output.'?=';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send Email
+	 *
+	 * @param	bool	$auto_clear = TRUE
+	 * @return	bool
+	 */
+	public function send($auto_clear = TRUE)
+	{
+		if ( ! isset($this->_headers['From']))
+		{
+			$this->_set_error_message('lang:email_no_from');
+			return FALSE;
+		}
+
+		if ($this->_replyto_flag === FALSE)
+		{
+			$this->reply_to($this->_headers['From']);
+		}
+
+		if (empty($this->_recipients) && ! isset($this->_headers['To'])
+			&& empty($this->_bcc_array) && ! isset($this->_headers['Bcc'])
+			&& ! isset($this->_headers['Cc']))
+		{
+			$this->_set_error_message('lang:email_no_recipients');
+			return FALSE;
+		}
+
+		$this->_build_headers();
+
+		if ($this->bcc_batch_mode && count($this->_bcc_array) > $this->bcc_batch_size)
+		{
+			$this->batch_bcc_send();
+
+			if ($auto_clear)
+			{
+				$this->clear();
+			}
+
+			return TRUE;
+		}
+
+		$this->_build_message();
+		$result = $this->_spool_email();
+
+		if ($result && $auto_clear)
+		{
+			$this->clear();
+		}
+
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Batch Bcc Send. Sends groups of BCCs in batches
+	 *
+	 * @return	void
+	 */
+	public function batch_bcc_send()
+	{
+		$float = $this->bcc_batch_size - 1;
+		$set = '';
+		$chunk = array();
+
+		for ($i = 0, $c = count($this->_bcc_array); $i < $c; $i++)
+		{
+			if (isset($this->_bcc_array[$i]))
+			{
+				$set .= ', '.$this->_bcc_array[$i];
+			}
+
+			if ($i === $float)
+			{
+				$chunk[] = self::substr($set, 1);
+				$float += $this->bcc_batch_size;
+				$set = '';
+			}
+
+			if ($i === $c-1)
+			{
+				$chunk[] = self::substr($set, 1);
+			}
+		}
+
+		for ($i = 0, $c = count($chunk); $i < $c; $i++)
+		{
+			unset($this->_headers['Bcc']);
+
+			$bcc = $this->clean_email($this->_str_to_array($chunk[$i]));
+
+			if ($this->protocol !== 'smtp')
+			{
+				$this->set_header('Bcc', implode(', ', $bcc));
+			}
+			else
+			{
+				$this->_bcc_array = $bcc;
+			}
+
+			$this->_build_message();
+			$this->_spool_email();
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Unwrap special elements
+	 *
+	 * @return	void
+	 */
+	protected function _unwrap_specials()
+	{
+		$this->_finalbody = preg_replace_callback('/\{unwrap\}(.*?)\{\/unwrap\}/si', array($this, '_remove_nl_callback'), $this->_finalbody);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Strip line-breaks via callback
+	 *
+	 * @param	string	$matches
+	 * @return	string
+	 */
+	protected function _remove_nl_callback($matches)
+	{
+		if (strpos($matches[1], "\r") !== FALSE OR strpos($matches[1], "\n") !== FALSE)
+		{
+			$matches[1] = str_replace(array("\r\n", "\r", "\n"), '', $matches[1]);
+		}
+
+		return $matches[1];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Spool mail to the mail server
+	 *
+	 * @return	bool
+	 */
+	protected function _spool_email()
+	{
+		$this->_unwrap_specials();
+
+		$protocol = $this->_get_protocol();
+		$method   = '_send_with_'.$protocol;
+		if ( ! $this->$method())
+		{
+			$this->_set_error_message('lang:email_send_failure_'.($protocol === 'mail' ? 'phpmail' : $protocol));
+			return FALSE;
+		}
+
+		$this->_set_error_message('lang:email_sent', $protocol);
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate email for shell
+	 *
+	 * Applies stricter, shell-safe validation to email addresses.
+	 * Introduced to prevent RCE via sendmail's -f option.
+	 *
+	 * @see	https://github.com/bcit-ci/CodeIgniter/issues/4963
+	 * @see	https://gist.github.com/Zenexer/40d02da5e07f151adeaeeaa11af9ab36
+	 * @license	https://creativecommons.org/publicdomain/zero/1.0/	CC0 1.0, Public Domain
+	 *
+	 * Credits for the base concept go to Paul Buonopane <paul@namepros.com>
+	 *
+	 * @param	string	$email
+	 * @return	bool
+	 */
+	protected function _validate_email_for_shell(&$email)
+	{
+		if (function_exists('idn_to_ascii') && $atpos = strpos($email, '@'))
+		{
+			list($account, $domain) = explode('@', $email, 2);
+			$domain = defined('INTL_IDNA_VARIANT_UTS46')
+				? idn_to_ascii($domain, 0, INTL_IDNA_VARIANT_UTS46)
+				: idn_to_ascii($domain);
+
+			if ($domain !== FALSE)
+			{
+				$email = $account.'@'.$domain;
+			}
+		}
+
+		return (filter_var($email, FILTER_VALIDATE_EMAIL) === $email && preg_match('#\A[a-z0-9._+-]+@[a-z0-9.-]{1,253}\z#i', $email));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send using mail()
+	 *
+	 * @return	bool
+	 */
+	protected function _send_with_mail()
+	{
+		if (is_array($this->_recipients))
+		{
+			$this->_recipients = implode(', ', $this->_recipients);
+		}
+
+		// _validate_email_for_shell() below accepts by reference,
+		// so this needs to be assigned to a variable
+		$from = $this->clean_email($this->_headers['Return-Path']);
+
+		if ( ! $this->_validate_email_for_shell($from))
+		{
+			return mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str);
+		}
+
+		// most documentation of sendmail using the "-f" flag lacks a space after it, however
+		// we've encountered servers that seem to require it to be in place.
+		return mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str, '-f '.$from);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send using Sendmail
+	 *
+	 * @return	bool
+	 */
+	protected function _send_with_sendmail()
+	{
+		// _validate_email_for_shell() below accepts by reference,
+		// so this needs to be assigned to a variable
+		$from = $this->clean_email($this->_headers['From']);
+		if ($this->_validate_email_for_shell($from))
+		{
+			$from = '-f '.$from;
+		}
+		else
+		{
+			$from = '';
+		}
+
+		// is popen() enabled?
+		if ( ! function_usable('popen')	OR FALSE === ($fp = @popen($this->mailpath.' -oi '.$from.' -t', 'w')))
+		{
+			// server probably has popen disabled, so nothing we can do to get a verbose error.
+			return FALSE;
+		}
+
+		fputs($fp, $this->_header_str);
+		fputs($fp, $this->_finalbody);
+
+		$status = pclose($fp);
+
+		if ($status !== 0)
+		{
+			$this->_set_error_message('lang:email_exit_status', $status);
+			$this->_set_error_message('lang:email_no_socket');
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send using SMTP
+	 *
+	 * @return	bool
+	 */
+	protected function _send_with_smtp()
+	{
+		if ($this->smtp_host === '')
+		{
+			$this->_set_error_message('lang:email_no_hostname');
+			return FALSE;
+		}
+
+		if ( ! $this->_smtp_connect() OR ! $this->_smtp_authenticate())
+		{
+			return FALSE;
+		}
+
+		if ( ! $this->_send_command('from', $this->clean_email($this->_headers['From'])))
+		{
+			$this->_smtp_end();
+			return FALSE;
+		}
+
+		foreach ($this->_recipients as $val)
+		{
+			if ( ! $this->_send_command('to', $val))
+			{
+				$this->_smtp_end();
+				return FALSE;
+			}
+		}
+
+		foreach ($this->_cc_array as $val)
+		{
+			if ($val !== '' && ! $this->_send_command('to', $val))
+			{
+				$this->_smtp_end();
+				return FALSE;
+			}
+		}
+
+		foreach ($this->_bcc_array as $val)
+		{
+			if ($val !== '' && ! $this->_send_command('to', $val))
+			{
+				$this->_smtp_end();
+				return FALSE;
+			}
+		}
+
+		if ( ! $this->_send_command('data'))
+		{
+			$this->_smtp_end();
+			return FALSE;
+		}
+
+		// perform dot transformation on any lines that begin with a dot
+		$this->_send_data($this->_header_str.preg_replace('/^\./m', '..$1', $this->_finalbody));
+
+		$this->_send_data('.');
+		$reply = $this->_get_smtp_data();
+		$this->_set_error_message($reply);
+
+		$this->_smtp_end();
+
+		if (strpos($reply, '250') !== 0)
+		{
+			$this->_set_error_message('lang:email_smtp_error', $reply);
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * SMTP End
+	 *
+	 * Shortcut to send RSET or QUIT depending on keep-alive
+	 *
+	 * @return	void
+	 */
+	protected function _smtp_end()
+	{
+		$this->_send_command($this->smtp_keepalive ? 'reset' : 'quit');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * SMTP Connect
+	 *
+	 * @return	string
+	 */
+	protected function _smtp_connect()
+	{
+		if (is_resource($this->_smtp_connect))
+		{
+			return TRUE;
+		}
+
+		$ssl = ($this->smtp_crypto === 'ssl') ? 'ssl://' : '';
+
+		$this->_smtp_connect = fsockopen(
+			$ssl.$this->smtp_host,
+			$this->smtp_port,
+			$errno,
+			$errstr,
+			$this->smtp_timeout
+		);
+
+		if ( ! is_resource($this->_smtp_connect))
+		{
+			$this->_set_error_message('lang:email_smtp_error', $errno.' '.$errstr);
+			return FALSE;
+		}
+
+		stream_set_timeout($this->_smtp_connect, $this->smtp_timeout);
+		$this->_set_error_message($this->_get_smtp_data());
+
+		if ($this->smtp_crypto === 'tls')
+		{
+			$this->_send_command('hello');
+			$this->_send_command('starttls');
+
+			/**
+			 * STREAM_CRYPTO_METHOD_TLS_CLIENT is quite the mess ...
+			 *
+			 * - On PHP <5.6 it doesn't even mean TLS, but SSL 2.0, and there's no option to use actual TLS
+			 * - On PHP 5.6.0-5.6.6, >=7.2 it means negotiation with any of TLS 1.0, 1.1, 1.2
+			 * - On PHP 5.6.7-7.1.* it means only TLS 1.0
+			 *
+			 * We want the negotiation, so we'll force it below ...
+			 */
+			$method = is_php('5.6')
+				? STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT | STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT | STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT
+				: STREAM_CRYPTO_METHOD_TLS_CLIENT;
+			$crypto = stream_socket_enable_crypto($this->_smtp_connect, TRUE, $method);
+
+			if ($crypto !== TRUE)
+			{
+				$this->_set_error_message('lang:email_smtp_error', $this->_get_smtp_data());
+				return FALSE;
+			}
+		}
+
+		return $this->_send_command('hello');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send SMTP command
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	protected function _send_command($cmd, $data = '')
+	{
+		switch ($cmd)
+		{
+			case 'hello':
+				if ($this->_smtp_auth OR $this->_get_encoding() === '8bit')
+				{
+					$this->_send_data('EHLO '.$this->_get_hostname());
+				}
+				else
+				{
+					$this->_send_data('HELO '.$this->_get_hostname());
+				}
+
+				$resp = 250;
+				break;
+			case 'starttls':
+				$this->_send_data('STARTTLS');
+				$resp = 220;
+				break;
+			case 'from':
+				$this->_send_data('MAIL FROM:<'.$data.'>');
+				$resp = 250;
+				break;
+			case 'to':
+				if ($this->dsn)
+				{
+					$this->_send_data('RCPT TO:<'.$data.'> NOTIFY=SUCCESS,DELAY,FAILURE ORCPT=rfc822;'.$data);
+				}
+				else
+				{
+					$this->_send_data('RCPT TO:<'.$data.'>');
+				}
+				$resp = 250;
+				break;
+			case 'data':
+				$this->_send_data('DATA');
+				$resp = 354;
+				break;
+			case 'reset':
+				$this->_send_data('RSET');
+				$resp = 250;
+				break;
+			case 'quit':
+				$this->_send_data('QUIT');
+				$resp = 221;
+				break;
+		}
+
+		$reply = $this->_get_smtp_data();
+
+		$this->_debug_msg[] = '<pre>'.$cmd.': '.$reply.'</pre>';
+
+		if ((int) self::substr($reply, 0, 3) !== $resp)
+		{
+			$this->_set_error_message('lang:email_smtp_error', $reply);
+			return FALSE;
+		}
+
+		if ($cmd === 'quit')
+		{
+			fclose($this->_smtp_connect);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * SMTP Authenticate
+	 *
+	 * @return	bool
+	 */
+	protected function _smtp_authenticate()
+	{
+		if ( ! $this->_smtp_auth)
+		{
+			return TRUE;
+		}
+
+		if ($this->smtp_user === '' && $this->smtp_pass === '')
+		{
+			$this->_set_error_message('lang:email_no_smtp_unpw');
+			return FALSE;
+		}
+
+		$this->_send_data('AUTH LOGIN');
+		$reply = $this->_get_smtp_data();
+
+		if (strpos($reply, '503') === 0)	// Already authenticated
+		{
+			return TRUE;
+		}
+		elseif (strpos($reply, '334') !== 0)
+		{
+			$this->_set_error_message('lang:email_failed_smtp_login', $reply);
+			return FALSE;
+		}
+
+		$this->_send_data(base64_encode($this->smtp_user));
+		$reply = $this->_get_smtp_data();
+
+		if (strpos($reply, '334') !== 0)
+		{
+			$this->_set_error_message('lang:email_smtp_auth_un', $reply);
+			return FALSE;
+		}
+
+		$this->_send_data(base64_encode($this->smtp_pass));
+		$reply = $this->_get_smtp_data();
+
+		if (strpos($reply, '235') !== 0)
+		{
+			$this->_set_error_message('lang:email_smtp_auth_pw', $reply);
+			return FALSE;
+		}
+
+		if ($this->smtp_keepalive)
+		{
+			$this->_smtp_auth = FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send SMTP data
+	 *
+	 * @param	string	$data
+	 * @return	bool
+	 */
+	protected function _send_data($data)
+	{
+		$data .= $this->newline;
+		for ($written = $timestamp = 0, $length = self::strlen($data); $written < $length; $written += $result)
+		{
+			if (($result = fwrite($this->_smtp_connect, self::substr($data, $written))) === FALSE)
+			{
+				break;
+			}
+			// See https://bugs.php.net/bug.php?id=39598 and https://secure.php.net/manual/en/function.fwrite.php#96951
+			elseif ($result === 0)
+			{
+				if ($timestamp === 0)
+				{
+					$timestamp = time();
+				}
+				elseif ($timestamp < (time() - $this->smtp_timeout))
+				{
+					$result = FALSE;
+					break;
+				}
+
+				usleep(250000);
+				continue;
+			}
+
+			$timestamp = 0;
+		}
+
+		if ($result === FALSE)
+		{
+			$this->_set_error_message('lang:email_smtp_data_failure', $data);
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get SMTP data
+	 *
+	 * @return	string
+	 */
+	protected function _get_smtp_data()
+	{
+		$data = '';
+
+		while ($str = fgets($this->_smtp_connect, 512))
+		{
+			$data .= $str;
+
+			if ($str[3] === ' ')
+			{
+				break;
+			}
+		}
+
+		return $data;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Hostname
+	 *
+	 * There are only two legal types of hostname - either a fully
+	 * qualified domain name (eg: "mail.example.com") or an IP literal
+	 * (eg: "[1.2.3.4]").
+	 *
+	 * @link	https://tools.ietf.org/html/rfc5321#section-2.3.5
+	 * @link	https://cbl.abuseat.org/namingproblems.html
+	 * @return	string
+	 */
+	protected function _get_hostname()
+	{
+		if (isset($_SERVER['SERVER_NAME']))
+		{
+			return $_SERVER['SERVER_NAME'];
+		}
+
+		return isset($_SERVER['SERVER_ADDR']) ? '['.$_SERVER['SERVER_ADDR'].']' : '[127.0.0.1]';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Debug Message
+	 *
+	 * @param	array	$include	List of raw data chunks to include in the output
+	 *					Valid options are: 'headers', 'subject', 'body'
+	 * @return	string
+	 */
+	public function print_debugger($include = array('headers', 'subject', 'body'))
+	{
+		$msg = implode('', $this->_debug_msg);
+
+		// Determine which parts of our raw data needs to be printed
+		$raw_data = '';
+		is_array($include) OR $include = array($include);
+
+		in_array('headers', $include, TRUE) && $raw_data  = htmlspecialchars($this->_header_str)."\n";
+		in_array('subject', $include, TRUE) && $raw_data .= htmlspecialchars($this->_subject)."\n";
+		in_array('body', $include, TRUE)    && $raw_data .= htmlspecialchars($this->_finalbody);
+
+		return $msg.($raw_data === '' ? '' : '<pre>'.$raw_data.'</pre>');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Message
+	 *
+	 * @param	string	$msg
+	 * @param	string	$val = ''
+	 * @return	void
+	 */
+	protected function _set_error_message($msg, $val = '')
+	{
+		$CI =& get_instance();
+		$CI->lang->load('email');
+
+		if (sscanf($msg, 'lang:%s', $line) !== 1 OR FALSE === ($line = $CI->lang->line($line)))
+		{
+			$this->_debug_msg[] = str_replace('%s', $val, $msg).'<br />';
+		}
+		else
+		{
+			$this->_debug_msg[] = str_replace('%s', $val, $line).'<br />';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Mime Types
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _mime_types($ext = '')
+	{
+		$ext = strtolower($ext);
+
+		$mimes =& get_mimes();
+
+		if (isset($mimes[$ext]))
+		{
+			return is_array($mimes[$ext])
+				? current($mimes[$ext])
+				: $mimes[$ext];
+		}
+
+		return 'application/x-unknown-content-type';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Destructor
+	 *
+	 * @return	void
+	 */
+	public function __destruct()
+	{
+		is_resource($this->_smtp_connect) && $this->_send_command('quit');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return (self::$func_overload)
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe substr()
+	 *
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int	$length
+	 * @return	string
+	 */
+	protected static function substr($str, $start, $length = NULL)
+	{
+		if (self::$func_overload)
+		{
+			return mb_substr($str, $start, $length, '8bit');
+		}
+
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/libraries/Encrypt.php b/system/libraries/Encrypt.php
new file mode 100644
index 00000000..df1af4cf
--- /dev/null
+++ b/system/libraries/Encrypt.php
@@ -0,0 +1,521 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Encryption Class
+ *
+ * Provides two-way keyed encoding using Mcrypt
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/encryption.html
+ */
+class CI_Encrypt {
+
+	/**
+	 * Reference to the user's encryption key
+	 *
+	 * @var string
+	 */
+	public $encryption_key		= '';
+
+	/**
+	 * Type of hash operation
+	 *
+	 * @var string
+	 */
+	protected $_hash_type		= 'sha1';
+
+	/**
+	 * Flag for the existence of mcrypt
+	 *
+	 * @var bool
+	 */
+	protected $_mcrypt_exists	= FALSE;
+
+	/**
+	 * Current cipher to be used with mcrypt
+	 *
+	 * @var string
+	 */
+	protected $_mcrypt_cipher;
+
+	/**
+	 * Method for encrypting/decrypting data
+	 *
+	 * @var int
+	 */
+	protected $_mcrypt_mode;
+
+	/**
+	 * Initialize Encryption class
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		if (($this->_mcrypt_exists = function_exists('mcrypt_encrypt')) === FALSE)
+		{
+			show_error('The Encrypt library requires the Mcrypt extension.');
+		}
+
+		log_message('info', 'Encrypt Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch the encryption key
+	 *
+	 * Returns it as MD5 in order to have an exact-length 128 bit key.
+	 * Mcrypt is sensitive to keys that are not the correct length
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function get_key($key = '')
+	{
+		if ($key === '')
+		{
+			if ($this->encryption_key !== '')
+			{
+				return $this->encryption_key;
+			}
+
+			$key = config_item('encryption_key');
+
+			if ( ! self::strlen($key))
+			{
+				show_error('In order to use the encryption class requires that you set an encryption key in your config file.');
+			}
+		}
+
+		return md5($key);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the encryption key
+	 *
+	 * @param	string
+	 * @return	CI_Encrypt
+	 */
+	public function set_key($key = '')
+	{
+		$this->encryption_key = $key;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encode
+	 *
+	 * Encodes the message string using bitwise XOR encoding.
+	 * The key is combined with a random hash, and then it
+	 * too gets converted using XOR. The whole thing is then run
+	 * through mcrypt using the randomized key. The end result
+	 * is a double-encrypted message string that is randomized
+	 * with each call to this function, even if the supplied
+	 * message and key are the same.
+	 *
+	 * @param	string	the string to encode
+	 * @param	string	the key
+	 * @return	string
+	 */
+	public function encode($string, $key = '')
+	{
+		return base64_encode($this->mcrypt_encode($string, $this->get_key($key)));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decode
+	 *
+	 * Reverses the above process
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	public function decode($string, $key = '')
+	{
+		if (preg_match('/[^a-zA-Z0-9\/\+=]/', $string) OR base64_encode(base64_decode($string)) !== $string)
+		{
+			return FALSE;
+		}
+
+		return $this->mcrypt_decode(base64_decode($string), $this->get_key($key));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encode from Legacy
+	 *
+	 * Takes an encoded string from the original Encryption class algorithms and
+	 * returns a newly encoded string using the improved method added in 2.0.0
+	 * This allows for backwards compatibility and a method to transition to the
+	 * new encryption algorithms.
+	 *
+	 * For more details, see https://codeigniter.com/userguide3/installation/upgrade_200.html#encryption
+	 *
+	 * @param	string
+	 * @param	int		(mcrypt mode constant)
+	 * @param	string
+	 * @return	string
+	 */
+	public function encode_from_legacy($string, $legacy_mode = MCRYPT_MODE_ECB, $key = '')
+	{
+		if (preg_match('/[^a-zA-Z0-9\/\+=]/', $string))
+		{
+			return FALSE;
+		}
+
+		// decode it first
+		// set mode temporarily to what it was when string was encoded with the legacy
+		// algorithm - typically MCRYPT_MODE_ECB
+		$current_mode = $this->_get_mode();
+		$this->set_mode($legacy_mode);
+
+		$key = $this->get_key($key);
+		$dec = base64_decode($string);
+		if (($dec = $this->mcrypt_decode($dec, $key)) === FALSE)
+		{
+			$this->set_mode($current_mode);
+			return FALSE;
+		}
+
+		$dec = $this->_xor_decode($dec, $key);
+
+		// set the mcrypt mode back to what it should be, typically MCRYPT_MODE_CBC
+		$this->set_mode($current_mode);
+
+		// and re-encode
+		return base64_encode($this->mcrypt_encode($dec, $key));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * XOR Decode
+	 *
+	 * Takes an encoded string and key as input and generates the
+	 * plain-text original message
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _xor_decode($string, $key)
+	{
+		$string = $this->_xor_merge($string, $key);
+
+		$dec = '';
+		for ($i = 0, $l = self::strlen($string); $i < $l; $i++)
+		{
+			$dec .= ($string[$i++] ^ $string[$i]);
+		}
+
+		return $dec;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * XOR key + string Combiner
+	 *
+	 * Takes a string and key as input and computes the difference using XOR
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _xor_merge($string, $key)
+	{
+		$hash = $this->hash($key);
+		$str = '';
+
+		for ($i = 0, $ls = self::strlen($string), $lh = self::strlen($hash); $i < $ls; $i++)
+		{
+			$str .= $string[$i] ^ $hash[($i % $lh)];
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encrypt using Mcrypt
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	public function mcrypt_encode($data, $key)
+	{
+		$init_size = mcrypt_get_iv_size($this->_get_cipher(), $this->_get_mode());
+		$init_vect = mcrypt_create_iv($init_size, MCRYPT_DEV_URANDOM);
+		return $this->_add_cipher_noise($init_vect.mcrypt_encrypt($this->_get_cipher(), $key, $data, $this->_get_mode(), $init_vect), $key);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decrypt using Mcrypt
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	public function mcrypt_decode($data, $key)
+	{
+		$data = $this->_remove_cipher_noise($data, $key);
+		$init_size = mcrypt_get_iv_size($this->_get_cipher(), $this->_get_mode());
+
+		if ($init_size > self::strlen($data))
+		{
+			return FALSE;
+		}
+
+		$init_vect = self::substr($data, 0, $init_size);
+		$data      = self::substr($data, $init_size);
+
+		return rtrim(mcrypt_decrypt($this->_get_cipher(), $key, $data, $this->_get_mode(), $init_vect), "\0");
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Adds permuted noise to the IV + encrypted data to protect
+	 * against Man-in-the-middle attacks on CBC mode ciphers
+	 * http://www.ciphersbyritter.com/GLOSSARY.HTM#IV
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _add_cipher_noise($data, $key)
+	{
+		$key = $this->hash($key);
+		$str = '';
+
+		for ($i = 0, $j = 0, $ld = self::strlen($data), $lk = self::strlen($key); $i < $ld; ++$i, ++$j)
+		{
+			if ($j >= $lk)
+			{
+				$j = 0;
+			}
+
+			$str .= chr((ord($data[$i]) + ord($key[$j])) % 256);
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Removes permuted noise from the IV + encrypted data, reversing
+	 * _add_cipher_noise()
+	 *
+	 * Function description
+	 *
+	 * @param	string	$data
+	 * @param	string	$key
+	 * @return	string
+	 */
+	protected function _remove_cipher_noise($data, $key)
+	{
+		$key = $this->hash($key);
+		$str = '';
+
+		for ($i = 0, $j = 0, $ld = self::strlen($data), $lk = self::strlen($key); $i < $ld; ++$i, ++$j)
+		{
+			if ($j >= $lk)
+			{
+				$j = 0;
+			}
+
+			$temp = ord($data[$i]) - ord($key[$j]);
+
+			if ($temp < 0)
+			{
+				$temp += 256;
+			}
+
+			$str .= chr($temp);
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Mcrypt Cipher
+	 *
+	 * @param	int
+	 * @return	CI_Encrypt
+	 */
+	public function set_cipher($cipher)
+	{
+		$this->_mcrypt_cipher = $cipher;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Mcrypt Mode
+	 *
+	 * @param	int
+	 * @return	CI_Encrypt
+	 */
+	public function set_mode($mode)
+	{
+		$this->_mcrypt_mode = $mode;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Mcrypt cipher Value
+	 *
+	 * @return	int
+	 */
+	protected function _get_cipher()
+	{
+		if ($this->_mcrypt_cipher === NULL)
+		{
+			return $this->_mcrypt_cipher = MCRYPT_RIJNDAEL_256;
+		}
+
+		return $this->_mcrypt_cipher;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Mcrypt Mode Value
+	 *
+	 * @return	int
+	 */
+	protected function _get_mode()
+	{
+		if ($this->_mcrypt_mode === NULL)
+		{
+			return $this->_mcrypt_mode = MCRYPT_MODE_CBC;
+		}
+
+		return $this->_mcrypt_mode;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Hash type
+	 *
+	 * @param	string
+	 * @return	void
+	 */
+	public function set_hash($type = 'sha1')
+	{
+		$this->_hash_type = in_array($type, hash_algos()) ? $type : 'sha1';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Hash encode a string
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function hash($str)
+	{
+		return hash($this->_hash_type, $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return defined('MB_OVERLOAD_STRING')
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe substr()
+	 *
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int	$length
+	 * @return	string
+	 */
+	protected static function substr($str, $start, $length = NULL)
+	{
+		if (defined('MB_OVERLOAD_STRING'))
+		{
+			// mb_substr($str, $start, null, '8bit') returns an empty
+			// string on PHP 5.3
+			isset($length) OR $length = ($start >= 0 ? self::strlen($str) - $start : -$start);
+			return mb_substr($str, $start, $length, '8bit');
+		}
+
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/libraries/Encryption.php b/system/libraries/Encryption.php
new file mode 100644
index 00000000..b11588af
--- /dev/null
+++ b/system/libraries/Encryption.php
@@ -0,0 +1,938 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Encryption Class
+ *
+ * Provides two-way keyed encryption via PHP's MCrypt and/or OpenSSL extensions.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/libraries/encryption.html
+ */
+class CI_Encryption {
+
+	/**
+	 * Encryption cipher
+	 *
+	 * @var	string
+	 */
+	protected $_cipher = 'aes-128';
+
+	/**
+	 * Cipher mode
+	 *
+	 * @var	string
+	 */
+	protected $_mode = 'cbc';
+
+	/**
+	 * Cipher handle
+	 *
+	 * @var	mixed
+	 */
+	protected $_handle;
+
+	/**
+	 * Encryption key
+	 *
+	 * @var	string
+	 */
+	protected $_key;
+
+	/**
+	 * PHP extension to be used
+	 *
+	 * @var	string
+	 */
+	protected $_driver;
+
+	/**
+	 * List of usable drivers (PHP extensions)
+	 *
+	 * @var	array
+	 */
+	protected $_drivers = array();
+
+	/**
+	 * List of available modes
+	 *
+	 * @var	array
+	 */
+	protected $_modes = array(
+		'mcrypt' => array(
+			'cbc' => 'cbc',
+			'ecb' => 'ecb',
+			'ofb' => 'nofb',
+			'ofb8' => 'ofb',
+			'cfb' => 'ncfb',
+			'cfb8' => 'cfb',
+			'ctr' => 'ctr',
+			'stream' => 'stream'
+		),
+		'openssl' => array(
+			'cbc' => 'cbc',
+			'ecb' => 'ecb',
+			'ofb' => 'ofb',
+			'cfb' => 'cfb',
+			'cfb8' => 'cfb8',
+			'ctr' => 'ctr',
+			'stream' => '',
+			'xts' => 'xts'
+		)
+	);
+
+	/**
+	 * List of supported HMAC algorithms
+	 *
+	 * name => digest size pairs
+	 *
+	 * @var	array
+	 */
+	protected $_digests = array(
+		'sha224' => 28,
+		'sha256' => 32,
+		'sha384' => 48,
+		'sha512' => 64
+	);
+
+	/**
+	 * mbstring.func_overload flag
+	 *
+	 * @var	bool
+	 */
+	protected static $func_overload;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(array $params = array())
+	{
+		$this->_drivers = array(
+			'mcrypt'  => defined('MCRYPT_DEV_URANDOM'),
+			'openssl' => extension_loaded('openssl')
+		);
+
+		if ( ! $this->_drivers['mcrypt'] && ! $this->_drivers['openssl'])
+		{
+			show_error('Encryption: Unable to find an available encryption driver.');
+		}
+
+		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+		$this->initialize($params);
+
+		if ( ! isset($this->_key) && self::strlen($key = config_item('encryption_key')) > 0)
+		{
+			$this->_key = $key;
+		}
+
+		log_message('info', 'Encryption Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	CI_Encryption
+	 */
+	public function initialize(array $params)
+	{
+		if ( ! empty($params['driver']))
+		{
+			if (isset($this->_drivers[$params['driver']]))
+			{
+				if ($this->_drivers[$params['driver']])
+				{
+					$this->_driver = $params['driver'];
+				}
+				else
+				{
+					log_message('error', "Encryption: Driver '".$params['driver']."' is not available.");
+				}
+			}
+			else
+			{
+				log_message('error', "Encryption: Unknown driver '".$params['driver']."' cannot be configured.");
+			}
+		}
+
+		if (empty($this->_driver))
+		{
+			$this->_driver = ($this->_drivers['openssl'] === TRUE)
+				? 'openssl'
+				: 'mcrypt';
+
+			log_message('debug', "Encryption: Auto-configured driver '".$this->_driver."'.");
+		}
+
+		empty($params['cipher']) && $params['cipher'] = $this->_cipher;
+		empty($params['key']) OR $this->_key = $params['key'];
+		$this->{'_'.$this->_driver.'_initialize'}($params);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize MCrypt
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	protected function _mcrypt_initialize($params)
+	{
+		if ( ! empty($params['cipher']))
+		{
+			$params['cipher'] = strtolower($params['cipher']);
+			$this->_cipher_alias($params['cipher']);
+
+			if ( ! in_array($params['cipher'], mcrypt_list_algorithms(), TRUE))
+			{
+				log_message('error', 'Encryption: MCrypt cipher '.strtoupper($params['cipher']).' is not available.');
+			}
+			else
+			{
+				$this->_cipher = $params['cipher'];
+			}
+		}
+
+		if ( ! empty($params['mode']))
+		{
+			$params['mode'] = strtolower($params['mode']);
+			if ( ! isset($this->_modes['mcrypt'][$params['mode']]))
+			{
+				log_message('error', 'Encryption: MCrypt mode '.strtoupper($params['mode']).' is not available.');
+			}
+			else
+			{
+				$this->_mode = $this->_modes['mcrypt'][$params['mode']];
+			}
+		}
+
+		if (isset($this->_cipher, $this->_mode))
+		{
+			if (is_resource($this->_handle)
+				&& (strtolower(mcrypt_enc_get_algorithms_name($this->_handle)) !== $this->_cipher
+					OR strtolower(mcrypt_enc_get_modes_name($this->_handle)) !== $this->_mode)
+			)
+			{
+				mcrypt_module_close($this->_handle);
+			}
+
+			if ($this->_handle = mcrypt_module_open($this->_cipher, '', $this->_mode, ''))
+			{
+				log_message('info', 'Encryption: MCrypt cipher '.strtoupper($this->_cipher).' initialized in '.strtoupper($this->_mode).' mode.');
+			}
+			else
+			{
+				log_message('error', 'Encryption: Unable to initialize MCrypt with cipher '.strtoupper($this->_cipher).' in '.strtoupper($this->_mode).' mode.');
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize OpenSSL
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	protected function _openssl_initialize($params)
+	{
+		if ( ! empty($params['cipher']))
+		{
+			$params['cipher'] = strtolower($params['cipher']);
+			$this->_cipher_alias($params['cipher']);
+			$this->_cipher = $params['cipher'];
+		}
+
+		if ( ! empty($params['mode']))
+		{
+			$params['mode'] = strtolower($params['mode']);
+			if ( ! isset($this->_modes['openssl'][$params['mode']]))
+			{
+				log_message('error', 'Encryption: OpenSSL mode '.strtoupper($params['mode']).' is not available.');
+			}
+			else
+			{
+				$this->_mode = $this->_modes['openssl'][$params['mode']];
+			}
+		}
+
+		if (isset($this->_cipher, $this->_mode))
+		{
+			// This is mostly for the stream mode, which doesn't get suffixed in OpenSSL
+			$handle = empty($this->_mode)
+				? $this->_cipher
+				: $this->_cipher.'-'.$this->_mode;
+
+			if ( ! in_array($handle, openssl_get_cipher_methods(), TRUE))
+			{
+				$this->_handle = NULL;
+				log_message('error', 'Encryption: Unable to initialize OpenSSL with method '.strtoupper($handle).'.');
+			}
+			else
+			{
+				$this->_handle = $handle;
+				log_message('info', 'Encryption: OpenSSL initialized with method '.strtoupper($handle).'.');
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create a random key
+	 *
+	 * @param	int	$length	Output length
+	 * @return	string
+	 */
+	public function create_key($length)
+	{
+		if (function_exists('random_bytes'))
+		{
+			try
+			{
+				return random_bytes((int) $length);
+			}
+			catch (Exception $e)
+			{
+				log_message('error', $e->getMessage());
+				return FALSE;
+			}
+		}
+		elseif (defined('MCRYPT_DEV_URANDOM'))
+		{
+			return mcrypt_create_iv($length, MCRYPT_DEV_URANDOM);
+		}
+
+		$is_secure = NULL;
+		$key = openssl_random_pseudo_bytes($length, $is_secure);
+		return ($is_secure === TRUE)
+			? $key
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encrypt
+	 *
+	 * @param	string	$data	Input data
+	 * @param	array	$params	Input parameters
+	 * @return	string
+	 */
+	public function encrypt($data, array $params = NULL)
+	{
+		if (($params = $this->_get_params($params)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		isset($params['key']) OR $params['key'] = $this->hkdf($this->_key, 'sha512', NULL, self::strlen($this->_key), 'encryption');
+
+		if (($data = $this->{'_'.$this->_driver.'_encrypt'}($data, $params)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		$params['base64'] && $data = base64_encode($data);
+
+		if (isset($params['hmac_digest']))
+		{
+			isset($params['hmac_key']) OR $params['hmac_key'] = $this->hkdf($this->_key, 'sha512', NULL, NULL, 'authentication');
+			return hash_hmac($params['hmac_digest'], $data, $params['hmac_key'], ! $params['base64']).$data;
+		}
+
+		return $data;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encrypt via MCrypt
+	 *
+	 * @param	string	$data	Input data
+	 * @param	array	$params	Input parameters
+	 * @return	string
+	 */
+	protected function _mcrypt_encrypt($data, $params)
+	{
+		if ( ! is_resource($params['handle']))
+		{
+			return FALSE;
+		}
+
+		// The greater-than-1 comparison is mostly a work-around for a bug,
+		// where 1 is returned for ARCFour instead of 0.
+		$iv = (($iv_size = mcrypt_enc_get_iv_size($params['handle'])) > 1)
+			? $this->create_key($iv_size)
+			: NULL;
+
+		if (mcrypt_generic_init($params['handle'], $params['key'], $iv) < 0)
+		{
+			if ($params['handle'] !== $this->_handle)
+			{
+				mcrypt_module_close($params['handle']);
+			}
+
+			return FALSE;
+		}
+
+		// Use PKCS#7 padding in order to ensure compatibility with OpenSSL
+		// and other implementations outside of PHP.
+		if (in_array(strtolower(mcrypt_enc_get_modes_name($params['handle'])), array('cbc', 'ecb'), TRUE))
+		{
+			$block_size = mcrypt_enc_get_block_size($params['handle']);
+			$pad = $block_size - (self::strlen($data) % $block_size);
+			$data .= str_repeat(chr($pad), $pad);
+		}
+
+		// Work-around for yet another strange behavior in MCrypt.
+		//
+		// When encrypting in ECB mode, the IV is ignored. Yet
+		// mcrypt_enc_get_iv_size() returns a value larger than 0
+		// even if ECB is used AND mcrypt_generic_init() complains
+		// if you don't pass an IV with length equal to the said
+		// return value.
+		//
+		// This probably would've been fine (even though still wasteful),
+		// but OpenSSL isn't that dumb and we need to make the process
+		// portable, so ...
+		$data = (mcrypt_enc_get_modes_name($params['handle']) !== 'ECB')
+			? $iv.mcrypt_generic($params['handle'], $data)
+			: mcrypt_generic($params['handle'], $data);
+
+		mcrypt_generic_deinit($params['handle']);
+		if ($params['handle'] !== $this->_handle)
+		{
+			mcrypt_module_close($params['handle']);
+		}
+
+		return $data;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encrypt via OpenSSL
+	 *
+	 * @param	string	$data	Input data
+	 * @param	array	$params	Input parameters
+	 * @return	string
+	 */
+	protected function _openssl_encrypt($data, $params)
+	{
+		if (empty($params['handle']))
+		{
+			return FALSE;
+		}
+
+		$iv = ($iv_size = openssl_cipher_iv_length($params['handle']))
+			? $this->create_key($iv_size)
+			: NULL;
+
+		$data = openssl_encrypt(
+			$data,
+			$params['handle'],
+			$params['key'],
+			OPENSSL_RAW_DATA,
+			$iv
+		);
+
+		if ($data === FALSE)
+		{
+			return FALSE;
+		}
+
+		return $iv.$data;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decrypt
+	 *
+	 * @param	string	$data	Encrypted data
+	 * @param	array	$params	Input parameters
+	 * @return	string
+	 */
+	public function decrypt($data, array $params = NULL)
+	{
+		if (($params = $this->_get_params($params)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		if (isset($params['hmac_digest']))
+		{
+			// This might look illogical, but it is done during encryption as well ...
+			// The 'base64' value is effectively an inverted "raw data" parameter
+			$digest_size = ($params['base64'])
+				? $this->_digests[$params['hmac_digest']] * 2
+				: $this->_digests[$params['hmac_digest']];
+
+			if (self::strlen($data) <= $digest_size)
+			{
+				return FALSE;
+			}
+
+			$hmac_input = self::substr($data, 0, $digest_size);
+			$data = self::substr($data, $digest_size);
+
+			isset($params['hmac_key']) OR $params['hmac_key'] = $this->hkdf($this->_key, 'sha512', NULL, NULL, 'authentication');
+			$hmac_check = hash_hmac($params['hmac_digest'], $data, $params['hmac_key'], ! $params['base64']);
+
+			// Time-attack-safe comparison
+			$diff = 0;
+			for ($i = 0; $i < $digest_size; $i++)
+			{
+				$diff |= ord($hmac_input[$i]) ^ ord($hmac_check[$i]);
+			}
+
+			if ($diff !== 0)
+			{
+				return FALSE;
+			}
+		}
+
+		if ($params['base64'])
+		{
+			$data = base64_decode($data);
+		}
+
+		isset($params['key']) OR $params['key'] = $this->hkdf($this->_key, 'sha512', NULL, self::strlen($this->_key), 'encryption');
+
+		return $this->{'_'.$this->_driver.'_decrypt'}($data, $params);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decrypt via MCrypt
+	 *
+	 * @param	string	$data	Encrypted data
+	 * @param	array	$params	Input parameters
+	 * @return	string
+	 */
+	protected function _mcrypt_decrypt($data, $params)
+	{
+		if ( ! is_resource($params['handle']))
+		{
+			return FALSE;
+		}
+
+		// The greater-than-1 comparison is mostly a work-around for a bug,
+		// where 1 is returned for ARCFour instead of 0.
+		if (($iv_size = mcrypt_enc_get_iv_size($params['handle'])) > 1)
+		{
+			if (mcrypt_enc_get_modes_name($params['handle']) !== 'ECB')
+			{
+				$iv = self::substr($data, 0, $iv_size);
+				$data = self::substr($data, $iv_size);
+			}
+			else
+			{
+				// MCrypt is dumb and this is ignored, only size matters
+				$iv = str_repeat("\x0", $iv_size);
+			}
+		}
+		else
+		{
+			$iv = NULL;
+		}
+
+		if (mcrypt_generic_init($params['handle'], $params['key'], $iv) < 0)
+		{
+			if ($params['handle'] !== $this->_handle)
+			{
+				mcrypt_module_close($params['handle']);
+			}
+
+			return FALSE;
+		}
+
+		$data = mdecrypt_generic($params['handle'], $data);
+		// Remove PKCS#7 padding, if necessary
+		if (in_array(strtolower(mcrypt_enc_get_modes_name($params['handle'])), array('cbc', 'ecb'), TRUE))
+		{
+			$data = self::substr($data, 0, -ord($data[self::strlen($data)-1]));
+		}
+
+		mcrypt_generic_deinit($params['handle']);
+		if ($params['handle'] !== $this->_handle)
+		{
+			mcrypt_module_close($params['handle']);
+		}
+
+		return $data;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decrypt via OpenSSL
+	 *
+	 * @param	string	$data	Encrypted data
+	 * @param	array	$params	Input parameters
+	 * @return	string
+	 */
+	protected function _openssl_decrypt($data, $params)
+	{
+		if ($iv_size = openssl_cipher_iv_length($params['handle']))
+		{
+			$iv = self::substr($data, 0, $iv_size);
+			$data = self::substr($data, $iv_size);
+		}
+		else
+		{
+			$iv = NULL;
+		}
+
+		return empty($params['handle'])
+			? FALSE
+			: openssl_decrypt(
+				$data,
+				$params['handle'],
+				$params['key'],
+				OPENSSL_RAW_DATA,
+				$iv
+			);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get params
+	 *
+	 * @param	array	$params	Input parameters
+	 * @return	array
+	 */
+	protected function _get_params($params)
+	{
+		if (empty($params))
+		{
+			return isset($this->_cipher, $this->_mode, $this->_key, $this->_handle)
+				? array(
+					'handle' => $this->_handle,
+					'cipher' => $this->_cipher,
+					'mode' => $this->_mode,
+					'key' => NULL,
+					'base64' => TRUE,
+					'hmac_digest' => 'sha512',
+					'hmac_key' => NULL
+				)
+				: FALSE;
+		}
+		elseif ( ! isset($params['cipher'], $params['mode'], $params['key']))
+		{
+			return FALSE;
+		}
+
+		if (isset($params['mode']))
+		{
+			$params['mode'] = strtolower($params['mode']);
+			if ( ! isset($this->_modes[$this->_driver][$params['mode']]))
+			{
+				return FALSE;
+			}
+
+			$params['mode'] = $this->_modes[$this->_driver][$params['mode']];
+		}
+
+		if (isset($params['hmac']) && $params['hmac'] === FALSE)
+		{
+			$params['hmac_digest'] = $params['hmac_key'] = NULL;
+		}
+		else
+		{
+			if ( ! isset($params['hmac_key']))
+			{
+				return FALSE;
+			}
+			elseif (isset($params['hmac_digest']))
+			{
+				$params['hmac_digest'] = strtolower($params['hmac_digest']);
+				if ( ! isset($this->_digests[$params['hmac_digest']]))
+				{
+					return FALSE;
+				}
+			}
+			else
+			{
+				$params['hmac_digest'] = 'sha512';
+			}
+		}
+
+		$params = array(
+			'handle' => NULL,
+			'cipher' => $params['cipher'],
+			'mode' => $params['mode'],
+			'key' => $params['key'],
+			'base64' => isset($params['raw_data']) ? ! $params['raw_data'] : FALSE,
+			'hmac_digest' => $params['hmac_digest'],
+			'hmac_key' => $params['hmac_key']
+		);
+
+		$this->_cipher_alias($params['cipher']);
+		$params['handle'] = ($params['cipher'] !== $this->_cipher OR $params['mode'] !== $this->_mode)
+			? $this->{'_'.$this->_driver.'_get_handle'}($params['cipher'], $params['mode'])
+			: $this->_handle;
+
+		return $params;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get MCrypt handle
+	 *
+	 * @param	string	$cipher	Cipher name
+	 * @param	string	$mode	Encryption mode
+	 * @return	resource
+	 */
+	protected function _mcrypt_get_handle($cipher, $mode)
+	{
+		return mcrypt_module_open($cipher, '', $mode, '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get OpenSSL handle
+	 *
+	 * @param	string	$cipher	Cipher name
+	 * @param	string	$mode	Encryption mode
+	 * @return	string
+	 */
+	protected function _openssl_get_handle($cipher, $mode)
+	{
+		// OpenSSL methods aren't suffixed with '-stream' for this mode
+		return ($mode === 'stream')
+			? $cipher
+			: $cipher.'-'.$mode;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Cipher alias
+	 *
+	 * Tries to translate cipher names between MCrypt and OpenSSL's "dialects".
+	 *
+	 * @param	string	$cipher	Cipher name
+	 * @return	void
+	 */
+	protected function _cipher_alias(&$cipher)
+	{
+		static $dictionary;
+
+		if (empty($dictionary))
+		{
+			$dictionary = array(
+				'mcrypt' => array(
+					'aes-128' => 'rijndael-128',
+					'aes-192' => 'rijndael-128',
+					'aes-256' => 'rijndael-128',
+					'des3-ede3' => 'tripledes',
+					'bf' => 'blowfish',
+					'cast5' => 'cast-128',
+					'rc4' => 'arcfour',
+					'rc4-40' => 'arcfour'
+				),
+				'openssl' => array(
+					'rijndael-128' => 'aes-128',
+					'tripledes' => 'des-ede3',
+					'blowfish' => 'bf',
+					'cast-128' => 'cast5',
+					'arcfour' => 'rc4-40',
+					'rc4' => 'rc4-40'
+				)
+			);
+
+			// Notes:
+			//
+			// - Rijndael-128 is, at the same time all three of AES-128,
+			//   AES-192 and AES-256. The only difference between them is
+			//   the key size. Rijndael-192, Rijndael-256 on the other hand
+			//   also have different block sizes and are NOT AES-compatible.
+			//
+			// - Blowfish is said to be supporting key sizes between
+			//   4 and 56 bytes, but it appears that between MCrypt and
+			//   OpenSSL, only those of 16 and more bytes are compatible.
+			//   Also, don't know what MCrypt's 'blowfish-compat' is.
+			//
+			// - CAST-128/CAST5 produces a longer cipher when encrypted via
+			//   OpenSSL, but (strangely enough) can be decrypted by either
+			//   extension anyway.
+			//   Also, it appears that OpenSSL uses 16 rounds regardless of
+			//   the key size, while RFC2144 says that for key sizes lower
+			//   than 11 bytes, only 12 rounds should be used. This makes
+			//   it portable only with keys of between 11 and 16 bytes.
+			//
+			// - RC4 (ARCFour) has a strange implementation under OpenSSL.
+			//   Its 'rc4-40' cipher method seems to work flawlessly, yet
+			//   there's another one, 'rc4' that only works with a 16-byte key.
+			//
+			// - DES is compatible, but doesn't need an alias.
+			//
+			// Other seemingly matching ciphers between MCrypt, OpenSSL:
+			//
+			// - RC2 is NOT compatible and only an obscure forum post
+			//   confirms that it is MCrypt's fault.
+		}
+
+		if (isset($dictionary[$this->_driver][$cipher]))
+		{
+			$cipher = $dictionary[$this->_driver][$cipher];
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * HKDF
+	 *
+	 * @link	https://tools.ietf.org/rfc/rfc5869.txt
+	 * @param	$key	Input key
+	 * @param	$digest	A SHA-2 hashing algorithm
+	 * @param	$salt	Optional salt
+	 * @param	$length	Output length (defaults to the selected digest size)
+	 * @param	$info	Optional context/application-specific info
+	 * @return	string	A pseudo-random key
+	 */
+	public function hkdf($key, $digest = 'sha512', $salt = NULL, $length = NULL, $info = '')
+	{
+		if ( ! isset($this->_digests[$digest]))
+		{
+			return FALSE;
+		}
+
+		if (empty($length) OR ! is_int($length))
+		{
+			$length = $this->_digests[$digest];
+		}
+		elseif ($length > (255 * $this->_digests[$digest]))
+		{
+			return FALSE;
+		}
+
+		self::strlen($salt) OR $salt = str_repeat("\0", $this->_digests[$digest]);
+
+		$prk = hash_hmac($digest, $key, $salt, TRUE);
+		$key = '';
+		for ($key_block = '', $block_index = 1; self::strlen($key) < $length; $block_index++)
+		{
+			$key_block = hash_hmac($digest, $key_block.$info.chr($block_index), $prk, TRUE);
+			$key .= $key_block;
+		}
+
+		return self::substr($key, 0, $length);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * __get() magic
+	 *
+	 * @param	string	$key	Property name
+	 * @return	mixed
+	 */
+	public function __get($key)
+	{
+		// Because aliases
+		if ($key === 'mode')
+		{
+			return array_search($this->_mode, $this->_modes[$this->_driver], TRUE);
+		}
+		elseif (in_array($key, array('cipher', 'driver', 'drivers', 'digests'), TRUE))
+		{
+			return $this->{'_'.$key};
+		}
+
+		return NULL;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return (self::$func_overload)
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe substr()
+	 *
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int	$length
+	 * @return	string
+	 */
+	protected static function substr($str, $start, $length = NULL)
+	{
+		if (self::$func_overload)
+		{
+			return mb_substr($str, $start, $length, '8bit');
+		}
+
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
new file mode 100644
index 00000000..32cdc6bd
--- /dev/null
+++ b/system/libraries/Form_validation.php
@@ -0,0 +1,1592 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Form Validation Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Validation
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/form_validation.html
+ */
+class CI_Form_validation {
+
+	/**
+	 * Reference to the CodeIgniter instance
+	 *
+	 * @var object
+	 */
+	protected $CI;
+
+	/**
+	 * Validation data for the current form submission
+	 *
+	 * @var array
+	 */
+	protected $_field_data		= array();
+
+	/**
+	 * Validation rules for the current form
+	 *
+	 * @var array
+	 */
+	protected $_config_rules	= array();
+
+	/**
+	 * Array of validation errors
+	 *
+	 * @var array
+	 */
+	protected $_error_array		= array();
+
+	/**
+	 * Array of custom error messages
+	 *
+	 * @var array
+	 */
+	protected $_error_messages	= array();
+
+	/**
+	 * Start tag for error wrapping
+	 *
+	 * @var string
+	 */
+	protected $_error_prefix	= '<p>';
+
+	/**
+	 * End tag for error wrapping
+	 *
+	 * @var string
+	 */
+	protected $_error_suffix	= '</p>';
+
+	/**
+	 * Custom error message
+	 *
+	 * @var string
+	 */
+	protected $error_string		= '';
+
+	/**
+	 * Custom data to validate
+	 *
+	 * @var array
+	 */
+	public $validation_data	= array();
+
+	/**
+	 * Initialize Form_Validation class
+	 *
+	 * @param	array	$rules
+	 * @return	void
+	 */
+	public function __construct($rules = array())
+	{
+		$this->CI =& get_instance();
+
+		// applies delimiters set in config file.
+		if (isset($rules['error_prefix']))
+		{
+			$this->_error_prefix = $rules['error_prefix'];
+			unset($rules['error_prefix']);
+		}
+		if (isset($rules['error_suffix']))
+		{
+			$this->_error_suffix = $rules['error_suffix'];
+			unset($rules['error_suffix']);
+		}
+
+		// Validation rules can be stored in a config file.
+		$this->_config_rules = $rules;
+
+		// Automatically load the form helper
+		$this->CI->load->helper('form');
+
+		log_message('info', 'Form Validation Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Rules
+	 *
+	 * This function takes an array of field names and validation
+	 * rules as input, any custom error messages, validates the info,
+	 * and stores it
+	 *
+	 * @param	mixed	$field
+	 * @param	string	$label
+	 * @param	mixed	$rules
+	 * @param	array	$errors
+	 * @return	CI_Form_validation
+	 */
+	public function set_rules($field, $label = null, $rules = null, $errors = array())
+	{
+		// No reason to set rules if we have no POST data
+		// or a validation array has not been specified
+		if ($this->CI->input->method() !== 'post' && empty($this->validation_data))
+		{
+			return $this;
+		}
+
+		// If an array was passed via the first parameter instead of individual string
+		// values we cycle through it and recursively call this function.
+		if (is_array($field))
+		{
+			foreach ($field as $row)
+			{
+				// Houston, we have a problem...
+				if ( ! isset($row['field'], $row['rules']))
+				{
+					continue;
+				}
+
+				// If the field label wasn't passed we use the field name
+				$label = isset($row['label']) ? $row['label'] : $row['field'];
+
+				// Add the custom error message array
+				$errors = (isset($row['errors']) && is_array($row['errors'])) ? $row['errors'] : array();
+
+				// Here we go!
+				$this->set_rules($row['field'], $label, $row['rules'], $errors);
+			}
+
+			return $this;
+		}
+		elseif ( ! isset($rules))
+		{
+			throw new BadMethodCallException('Form_validation: set_rules() called without a $rules parameter');
+		}
+
+		// No fields or no rules? Nothing to do...
+		if ( ! is_string($field) OR $field === '' OR empty($rules))
+		{
+			throw new RuntimeException('Form_validation: set_rules() called with an empty $rules parameter');
+		}
+		elseif ( ! is_array($rules))
+		{
+			// BC: Convert pipe-separated rules string to an array
+			if ( ! is_string($rules))
+			{
+				throw new InvalidArgumentException('Form_validation: set_rules() expect $rules to be string or array; '.gettype($rules).' given');
+			}
+
+			$rules = preg_split('/\|(?![^\[]*\])/', $rules);
+		}
+
+		// If the field label wasn't passed we use the field name
+		$label = ($label === '') ? $field : $label;
+
+		$indexes = array();
+
+		// Is the field name an array? If it is an array, we break it apart
+		// into its components so that we can fetch the corresponding POST data later
+		if (($is_array = (bool) preg_match_all('/\[(.*?)\]/', $field, $matches)) === TRUE)
+		{
+			sscanf($field, '%[^[][', $indexes[0]);
+
+			for ($i = 0, $c = count($matches[0]); $i < $c; $i++)
+			{
+				if ($matches[1][$i] !== '')
+				{
+					$indexes[] = $matches[1][$i];
+				}
+			}
+		}
+
+		// Build our master array
+		$this->_field_data[$field] = array(
+			'field'		=> $field,
+			'label'		=> $label,
+			'rules'		=> $rules,
+			'errors'	=> $errors,
+			'is_array'	=> $is_array,
+			'keys'		=> $indexes,
+			'postdata'	=> NULL,
+			'error'		=> ''
+		);
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * By default, form validation uses the $_POST array to validate
+	 *
+	 * If an array is set through this method, then this array will
+	 * be used instead of the $_POST array
+	 *
+	 * Note that if you are validating multiple arrays, then the
+	 * reset_validation() function should be called after validating
+	 * each array due to the limitations of CI's singleton
+	 *
+	 * @param	array	$data
+	 * @return	CI_Form_validation
+	 */
+	public function set_data(array $data)
+	{
+		if ( ! empty($data))
+		{
+			$this->validation_data = $data;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Error Message
+	 *
+	 * Lets users set their own error messages on the fly. Note:
+	 * The key name has to match the function name that it corresponds to.
+	 *
+	 * @param	array
+	 * @param	string
+	 * @return	CI_Form_validation
+	 */
+	public function set_message($lang, $val = '')
+	{
+		if ( ! is_array($lang))
+		{
+			$lang = array($lang => $val);
+		}
+
+		$this->_error_messages = array_merge($this->_error_messages, $lang);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set The Error Delimiter
+	 *
+	 * Permits a prefix/suffix to be added to each error message
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	CI_Form_validation
+	 */
+	public function set_error_delimiters($prefix = '<p>', $suffix = '</p>')
+	{
+		$this->_error_prefix = $prefix;
+		$this->_error_suffix = $suffix;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Error Message
+	 *
+	 * Gets the error message associated with a particular field
+	 *
+	 * @param	string	$field	Field name
+	 * @param	string	$prefix	HTML start tag
+	 * @param 	string	$suffix	HTML end tag
+	 * @return	string
+	 */
+	public function error($field, $prefix = '', $suffix = '')
+	{
+		if (empty($this->_field_data[$field]['error']))
+		{
+			return '';
+		}
+
+		if ($prefix === '')
+		{
+			$prefix = $this->_error_prefix;
+		}
+
+		if ($suffix === '')
+		{
+			$suffix = $this->_error_suffix;
+		}
+
+		return $prefix.$this->_field_data[$field]['error'].$suffix;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Array of Error Messages
+	 *
+	 * Returns the error messages as an array
+	 *
+	 * @return	array
+	 */
+	public function error_array()
+	{
+		return $this->_error_array;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error String
+	 *
+	 * Returns the error messages as a string, wrapped in the error delimiters
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	public function error_string($prefix = '', $suffix = '')
+	{
+		// No errors, validation passes!
+		if (count($this->_error_array) === 0)
+		{
+			return '';
+		}
+
+		if ($prefix === '')
+		{
+			$prefix = $this->_error_prefix;
+		}
+
+		if ($suffix === '')
+		{
+			$suffix = $this->_error_suffix;
+		}
+
+		// Generate the error string
+		$str = '';
+		foreach ($this->_error_array as $val)
+		{
+			if ($val !== '')
+			{
+				$str .= $prefix.$val.$suffix."\n";
+			}
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Run the Validator
+	 *
+	 * This function does all the work.
+	 *
+	 * @param	string	$config
+	 * @param	array	$data
+	 * @return	bool
+	 */
+	public function run($config = NULL, &$data = NULL)
+	{
+		$validation_array = empty($this->validation_data)
+			? $_POST
+			: $this->validation_data;
+
+		// Does the _field_data array containing the validation rules exist?
+		// If not, we look to see if they were assigned via a config file
+		if (count($this->_field_data) === 0)
+		{
+			// No validation rules?  We're done...
+			if (empty($this->_config_rules))
+			{
+				return FALSE;
+			}
+
+			if (empty($config))
+			{
+				// Is there a validation rule for the particular URI being accessed?
+				$config = trim($this->CI->uri->ruri_string(), '/');
+				isset($this->_config_rules[$config]) OR $config = $this->CI->router->class.'/'.$this->CI->router->method;
+			}
+
+			$this->set_rules(isset($this->_config_rules[$config]) ? $this->_config_rules[$config] : $this->_config_rules);
+
+			// Were we able to set the rules correctly?
+			if (count($this->_field_data) === 0)
+			{
+				log_message('debug', 'Unable to find validation rules');
+				return FALSE;
+			}
+		}
+
+		// Load the language file containing error messages
+		$this->CI->lang->load('form_validation');
+
+		// Cycle through the rules for each field and match the corresponding $validation_data item
+		foreach ($this->_field_data as $field => &$row)
+		{
+			// Fetch the data from the validation_data array item and cache it in the _field_data array.
+			// Depending on whether the field name is an array or a string will determine where we get it from.
+			if ($row['is_array'] === TRUE)
+			{
+				$this->_field_data[$field]['postdata'] = $this->_reduce_array($validation_array, $row['keys']);
+			}
+			elseif (isset($validation_array[$field]))
+			{
+				$this->_field_data[$field]['postdata'] = $validation_array[$field];
+			}
+		}
+
+		// Execute validation rules
+		// Note: A second foreach (for now) is required in order to avoid false-positives
+		//	 for rules like 'matches', which correlate to other validation fields.
+		foreach ($this->_field_data as $field => &$row)
+		{
+			// Don't try to validate if we have no rules set
+			if (empty($row['rules']))
+			{
+				continue;
+			}
+
+			$this->_execute($row, $row['rules'], $row['postdata']);
+		}
+
+		if ( ! empty($this->_error_array))
+		{
+			return FALSE;
+		}
+
+		// Fill $data if requested, otherwise modify $_POST, as long as
+		// set_data() wasn't used (yea, I know it sounds confusing)
+		if (func_num_args() >= 2)
+		{
+			$data = empty($this->validation_data) ? $_POST : $this->validation_data;
+			$this->_reset_data_array($data);
+			return TRUE;
+		}
+
+		empty($this->validation_data) && $this->_reset_data_array($_POST);
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prepare rules
+	 *
+	 * Re-orders the provided rules in order of importance, so that
+	 * they can easily be executed later without weird checks ...
+	 *
+	 * "Callbacks" are given the highest priority (always called),
+	 * followed by 'required' (called if callbacks didn't fail),
+	 * and then every next rule depends on the previous one passing.
+	 *
+	 * @param	array	$rules
+	 * @return	array
+	 */
+	protected function _prepare_rules($rules)
+	{
+		$new_rules = array();
+		$callbacks = array();
+
+		foreach ($rules as &$rule)
+		{
+			// Let 'required' always be the first (non-callback) rule
+			if ($rule === 'required')
+			{
+				array_unshift($new_rules, 'required');
+			}
+			// 'isset' is a kind of a weird alias for 'required' ...
+			elseif ($rule === 'isset' && (empty($new_rules) OR $new_rules[0] !== 'required'))
+			{
+				array_unshift($new_rules, 'isset');
+			}
+			// The old/classic 'callback_'-prefixed rules
+			elseif (is_string($rule) && strncmp('callback_', $rule, 9) === 0)
+			{
+				$callbacks[] = $rule;
+			}
+			// Proper callables
+			elseif (is_callable($rule))
+			{
+				$callbacks[] = $rule;
+			}
+			// "Named" callables; i.e. array('name' => $callable)
+			elseif (is_array($rule) && isset($rule[0], $rule[1]) && is_callable($rule[1]))
+			{
+				$callbacks[] = $rule;
+			}
+			// Everything else goes at the end of the queue
+			else
+			{
+				$new_rules[] = $rule;
+			}
+		}
+
+		return array_merge($callbacks, $new_rules);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Traverse a multidimensional $_POST array index until the data is found
+	 *
+	 * @param	array
+	 * @param	array
+	 * @param	int
+	 * @return	mixed
+	 */
+	protected function _reduce_array($array, $keys, $i = 0)
+	{
+		if (is_array($array) && isset($keys[$i]))
+		{
+			return isset($array[$keys[$i]]) ? $this->_reduce_array($array[$keys[$i]], $keys, ($i+1)) : NULL;
+		}
+
+		// NULL must be returned for empty fields
+		return ($array === '') ? NULL : $array;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Re-populate the _POST array with our finalized and processed data
+	 *
+	 * @return	void
+	 */
+	protected function _reset_data_array(&$data)
+	{
+		foreach ($this->_field_data as $field => $row)
+		{
+			if ($row['postdata'] !== NULL)
+			{
+				if ($row['is_array'] === FALSE)
+				{
+					isset($data[$field]) && $data[$field] = is_array($row['postdata']) ? NULL : $row['postdata'];
+				}
+				else
+				{
+					$data_ref =& $data;
+
+					// before we assign values, make a reference to the right POST key
+					if (count($row['keys']) === 1)
+					{
+						$data_ref =& $data[current($row['keys'])];
+					}
+					else
+					{
+						foreach ($row['keys'] as $val)
+						{
+							$data_ref =& $data_ref[$val];
+						}
+					}
+
+					$data_ref = $row['postdata'];
+				}
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Executes the Validation routines
+	 *
+	 * @param	array
+	 * @param	array
+	 * @param	mixed
+	 * @param	int
+	 * @return	mixed
+	 */
+	protected function _execute($row, $rules, $postdata = NULL, $cycles = 0)
+	{
+		$allow_arrays = in_array('is_array', $rules, TRUE);
+
+		// If the $_POST data is an array we will run a recursive call
+		//
+		// Note: We MUST check if the array is empty or not!
+		//       Otherwise empty arrays will always pass validation.
+		if ($allow_arrays === FALSE && is_array($postdata) && ! empty($postdata))
+		{
+			foreach ($postdata as $key => $val)
+			{
+				$this->_execute($row, $rules, $val, $key);
+			}
+
+			return;
+		}
+
+		$rules = $this->_prepare_rules($rules);
+		foreach ($rules as $rule)
+		{
+			$_in_array = FALSE;
+
+			// We set the $postdata variable with the current data in our master array so that
+			// each cycle of the loop is dealing with the processed data from the last cycle
+			if ($row['is_array'] === TRUE && is_array($this->_field_data[$row['field']]['postdata']))
+			{
+				// We shouldn't need this safety, but just in case there isn't an array index
+				// associated with this cycle we'll bail out
+				if ( ! isset($this->_field_data[$row['field']]['postdata'][$cycles]))
+				{
+					continue;
+				}
+
+				$postdata = $this->_field_data[$row['field']]['postdata'][$cycles];
+				$_in_array = TRUE;
+			}
+			// If we get an array field, but it's not expected - then it is most likely
+			// somebody messing with the form on the client side, so we'll just consider
+			// it an empty field
+			elseif ($allow_arrays === FALSE && is_array($this->_field_data[$row['field']]['postdata']))
+			{
+				$postdata = NULL;
+			}
+			else
+			{
+				$postdata = $this->_field_data[$row['field']]['postdata'];
+			}
+
+			// Is the rule a callback?
+			$callback = $callable = FALSE;
+			if (is_string($rule))
+			{
+				if (strpos($rule, 'callback_') === 0)
+				{
+					$rule = substr($rule, 9);
+					$callback = TRUE;
+				}
+			}
+			elseif (is_callable($rule))
+			{
+				$callable = TRUE;
+			}
+			elseif (is_array($rule) && isset($rule[0], $rule[1]) && is_callable($rule[1]))
+			{
+				// We have a "named" callable, so save the name
+				$callable = $rule[0];
+				$rule = $rule[1];
+			}
+
+			// Strip the parameter (if exists) from the rule
+			// Rules can contain a parameter: max_length[5]
+			$param = FALSE;
+			if ( ! $callable && preg_match('/(.*?)\[(.*)\]/', $rule, $match))
+			{
+				$rule = $match[1];
+				$param = $match[2];
+			}
+
+			// Ignore empty, non-required inputs with a few exceptions ...
+			if (
+				($postdata === NULL OR ($allow_arrays === FALSE && $postdata === ''))
+				&& $callback === FALSE
+				&& $callable === FALSE
+				&& ! in_array($rule, array('required', 'isset', 'matches'), TRUE)
+			)
+			{
+				continue;
+			}
+
+			// Call the function that corresponds to the rule
+			if ($callback OR $callable !== FALSE)
+			{
+				if ($callback)
+				{
+					if ( ! method_exists($this->CI, $rule))
+					{
+						log_message('debug', 'Unable to find callback validation rule: '.$rule);
+						$result = FALSE;
+					}
+					else
+					{
+						// Run the function and grab the result
+						$result = $this->CI->$rule($postdata, $param);
+					}
+				}
+				else
+				{
+					$result = is_array($rule)
+						? $rule[0]->{$rule[1]}($postdata)
+						: $rule($postdata);
+
+					// Is $callable set to a rule name?
+					if ($callable !== FALSE)
+					{
+						$rule = $callable;
+					}
+				}
+
+				// Re-assign the result to the master data array
+				if ($_in_array === TRUE)
+				{
+					$this->_field_data[$row['field']]['postdata'][$cycles] = is_bool($result) ? $postdata : $result;
+				}
+				else
+				{
+					$this->_field_data[$row['field']]['postdata'] = is_bool($result) ? $postdata : $result;
+				}
+			}
+			elseif ( ! method_exists($this, $rule))
+			{
+				// If our own wrapper function doesn't exist we see if a native PHP function does.
+				// Users can use any native PHP function call that has one param.
+				if (function_exists($rule))
+				{
+					// Native PHP functions issue warnings if you pass them more parameters than they use
+					$result = ($param !== FALSE) ? $rule($postdata, $param) : $rule($postdata);
+
+					if ($_in_array === TRUE)
+					{
+						$this->_field_data[$row['field']]['postdata'][$cycles] = is_bool($result) ? $postdata : $result;
+					}
+					else
+					{
+						$this->_field_data[$row['field']]['postdata'] = is_bool($result) ? $postdata : $result;
+					}
+				}
+				else
+				{
+					log_message('debug', 'Unable to find validation rule: '.$rule);
+					$result = FALSE;
+				}
+			}
+			else
+			{
+				$result = $this->$rule($postdata, $param);
+
+				if ($_in_array === TRUE)
+				{
+					$this->_field_data[$row['field']]['postdata'][$cycles] = is_bool($result) ? $postdata : $result;
+				}
+				else
+				{
+					$this->_field_data[$row['field']]['postdata'] = is_bool($result) ? $postdata : $result;
+				}
+			}
+
+			// Did the rule test negatively? If so, grab the error.
+			if ($result === FALSE)
+			{
+				// Callable rules might not have named error messages
+				if ( ! is_string($rule))
+				{
+					$line = $this->CI->lang->line('form_validation_error_message_not_set').'(Anonymous function)';
+				}
+				else
+				{
+					$line = $this->_get_error_message($rule, $row['field']);
+				}
+
+				// Is the parameter we are inserting into the error message the name
+				// of another field? If so we need to grab its "field label"
+				if (isset($this->_field_data[$param], $this->_field_data[$param]['label']))
+				{
+					$param = $this->_translate_fieldname($this->_field_data[$param]['label']);
+				}
+
+				// Build the error message
+				$message = $this->_build_error_msg($line, $this->_translate_fieldname($row['label']), $param);
+
+				// Save the error message
+				$this->_field_data[$row['field']]['error'] = $message;
+
+				if ( ! isset($this->_error_array[$row['field']]))
+				{
+					$this->_error_array[$row['field']] = $message;
+				}
+
+				return;
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the error message for the rule
+	 *
+	 * @param 	string $rule 	The rule name
+	 * @param 	string $field	The field name
+	 * @return 	string
+	 */
+	protected function _get_error_message($rule, $field)
+	{
+		// check if a custom message is defined through validation config row.
+		if (isset($this->_field_data[$field]['errors'][$rule]))
+		{
+			return $this->_field_data[$field]['errors'][$rule];
+		}
+		// check if a custom message has been set using the set_message() function
+		elseif (isset($this->_error_messages[$rule]))
+		{
+			return $this->_error_messages[$rule];
+		}
+		elseif (FALSE !== ($line = $this->CI->lang->line('form_validation_'.$rule)))
+		{
+			return $line;
+		}
+		// DEPRECATED support for non-prefixed keys, lang file again
+		elseif (FALSE !== ($line = $this->CI->lang->line($rule, FALSE)))
+		{
+			return $line;
+		}
+
+		return $this->CI->lang->line('form_validation_error_message_not_set').'('.$rule.')';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Translate a field name
+	 *
+	 * @param	string	the field name
+	 * @return	string
+	 */
+	protected function _translate_fieldname($fieldname)
+	{
+		// Do we need to translate the field name? We look for the prefix 'lang:' to determine this
+		// If we find one, but there's no translation for the string - just return it
+		if (sscanf($fieldname, 'lang:%s', $line) === 1 && FALSE === ($fieldname = $this->CI->lang->line($line, FALSE)))
+		{
+			return $line;
+		}
+
+		return $fieldname;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Build an error message using the field and param.
+	 *
+	 * @param	string	The error message line
+	 * @param	string	A field's human name
+	 * @param	mixed	A rule's optional parameter
+	 * @return	string
+	 */
+	protected function _build_error_msg($line, $field = '', $param = '')
+	{
+		// Check for %s in the string for legacy support.
+		if (strpos($line, '%s') !== FALSE)
+		{
+			return sprintf($line, $field, $param);
+		}
+
+		return str_replace(array('{field}', '{param}'), array($field, $param), $line);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Checks if the rule is present within the validator
+	 *
+	 * Permits you to check if a rule is present within the validator
+	 *
+	 * @param	string	the field name
+	 * @return	bool
+	 */
+	public function has_rule($field)
+	{
+		return isset($this->_field_data[$field]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the value from a form
+	 *
+	 * Permits you to repopulate a form field with the value it was submitted
+	 * with, or, if that value doesn't exist, with the default
+	 *
+	 * @param	string	the field name
+	 * @param	string
+	 * @return	string
+	 */
+	public function set_value($field = '', $default = '')
+	{
+		if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
+		{
+			return $default;
+		}
+
+		// If the data is an array output them one at a time.
+		//	E.g: form_input('name[]', set_value('name[]');
+		if (is_array($this->_field_data[$field]['postdata']))
+		{
+			return array_shift($this->_field_data[$field]['postdata']);
+		}
+
+		return $this->_field_data[$field]['postdata'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Select
+	 *
+	 * Enables pull-down lists to be set to the value the user
+	 * selected in the event of an error
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	public function set_select($field = '', $value = '', $default = FALSE)
+	{
+		if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
+		{
+			return ($default === TRUE && count($this->_field_data) === 0) ? ' selected="selected"' : '';
+		}
+
+		$field = $this->_field_data[$field]['postdata'];
+		$value = (string) $value;
+		if (is_array($field))
+		{
+			// Note: in_array('', array(0)) returns TRUE, do not use it
+			foreach ($field as &$v)
+			{
+				if ($value === $v)
+				{
+					return ' selected="selected"';
+				}
+			}
+
+			return '';
+		}
+		elseif (($field === '' OR $value === '') OR ($field !== $value))
+		{
+			return '';
+		}
+
+		return ' selected="selected"';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Radio
+	 *
+	 * Enables radio buttons to be set to the value the user
+	 * selected in the event of an error
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	public function set_radio($field = '', $value = '', $default = FALSE)
+	{
+		if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
+		{
+			return ($default === TRUE && count($this->_field_data) === 0) ? ' checked="checked"' : '';
+		}
+
+		$field = $this->_field_data[$field]['postdata'];
+		$value = (string) $value;
+		if (is_array($field))
+		{
+			// Note: in_array('', array(0)) returns TRUE, do not use it
+			foreach ($field as &$v)
+			{
+				if ($value === $v)
+				{
+					return ' checked="checked"';
+				}
+			}
+
+			return '';
+		}
+		elseif (($field === '' OR $value === '') OR ($field !== $value))
+		{
+			return '';
+		}
+
+		return ' checked="checked"';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Checkbox
+	 *
+	 * Enables checkboxes to be set to the value the user
+	 * selected in the event of an error
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
+	public function set_checkbox($field = '', $value = '', $default = FALSE)
+	{
+		// Logic is exactly the same as for radio fields
+		return $this->set_radio($field, $value, $default);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Required
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function required($str)
+	{
+		return is_array($str)
+			? (empty($str) === FALSE)
+			: (trim($str) !== '');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Performs a Regular Expression match test.
+	 *
+	 * @param	string
+	 * @param	string	regex
+	 * @return	bool
+	 */
+	public function regex_match($str, $regex)
+	{
+		return (bool) preg_match($regex, $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Match one field to another
+	 *
+	 * @param	string	$str	string to compare against
+	 * @param	string	$field
+	 * @return	bool
+	 */
+	public function matches($str, $field)
+	{
+		return isset($this->_field_data[$field], $this->_field_data[$field]['postdata'])
+			? ($str === $this->_field_data[$field]['postdata'])
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Differs from another field
+	 *
+	 * @param	string
+	 * @param	string	field
+	 * @return	bool
+	 */
+	public function differs($str, $field)
+	{
+		return ! (isset($this->_field_data[$field]) && $this->_field_data[$field]['postdata'] === $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is Unique
+	 *
+	 * Check if the input value doesn't already exist
+	 * in the specified database field.
+	 *
+	 * @param	string	$str
+	 * @param	string	$field
+	 * @return	bool
+	 */
+	public function is_unique($str, $field)
+	{
+		sscanf($field, '%[^.].%[^.]', $table, $field);
+		return isset($this->CI->db)
+			? ($this->CI->db->limit(1)->get_where($table, array($field => $str))->num_rows() === 0)
+			: FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Minimum Length
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	public function min_length($str, $val)
+	{
+		if ( ! is_numeric($val))
+		{
+			return FALSE;
+		}
+
+		return ($val <= mb_strlen($str));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Max Length
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	public function max_length($str, $val)
+	{
+		if ( ! is_numeric($val))
+		{
+			return FALSE;
+		}
+
+		return ($val >= mb_strlen($str));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Exact Length
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	public function exact_length($str, $val)
+	{
+		if ( ! is_numeric($val))
+		{
+			return FALSE;
+		}
+
+		return (mb_strlen($str) === (int) $val);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Valid URL
+	 *
+	 * @param	string	$str
+	 * @return	bool
+	 */
+	public function valid_url($str)
+	{
+		if (empty($str))
+		{
+			return FALSE;
+		}
+		elseif (preg_match('/^(?:([^:]*)\:)?\/\/(.+)$/', $str, $matches))
+		{
+			if (empty($matches[2]))
+			{
+				return FALSE;
+			}
+			elseif ( ! in_array(strtolower($matches[1]), array('http', 'https'), TRUE))
+			{
+				return FALSE;
+			}
+
+			$str = $matches[2];
+		}
+
+		// Apparently, FILTER_VALIDATE_URL doesn't reject digit-only names for some reason ...
+		// See https://github.com/bcit-ci/CodeIgniter/issues/5755
+		if (ctype_digit($str))
+		{
+			return FALSE;
+		}
+
+		// PHP 7 accepts IPv6 addresses within square brackets as hostnames,
+		// but it appears that the PR that came in with https://bugs.php.net/bug.php?id=68039
+		// was never merged into a PHP 5 branch ... https://3v4l.org/8PsSN
+		if (preg_match('/^\[([^\]]+)\]/', $str, $matches) && ! is_php('7') && filter_var($matches[1], FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) !== FALSE)
+		{
+			$str = 'ipv6.host'.substr($str, strlen($matches[1]) + 2);
+		}
+
+		return (filter_var('http://'.$str, FILTER_VALIDATE_URL) !== FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Valid Email
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function valid_email($str)
+	{
+		if (function_exists('idn_to_ascii') && preg_match('#\A([^@]+)@(.+)\z#', $str, $matches))
+		{
+			$domain = defined('INTL_IDNA_VARIANT_UTS46')
+				? idn_to_ascii($matches[2], 0, INTL_IDNA_VARIANT_UTS46)
+				: idn_to_ascii($matches[2]);
+
+			if ($domain !== FALSE)
+			{
+				$str = $matches[1].'@'.$domain;
+			}
+		}
+
+		return (bool) filter_var($str, FILTER_VALIDATE_EMAIL);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Valid Emails
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function valid_emails($str)
+	{
+		if (strpos($str, ',') === FALSE)
+		{
+			return $this->valid_email(trim($str));
+		}
+
+		foreach (explode(',', $str) as $email)
+		{
+			if (trim($email) !== '' && $this->valid_email(trim($email)) === FALSE)
+			{
+				return FALSE;
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate IP Address
+	 *
+	 * @param	string
+	 * @param	string	'ipv4' or 'ipv6' to validate a specific IP format
+	 * @return	bool
+	 */
+	public function valid_ip($ip, $which = '')
+	{
+		return $this->CI->input->valid_ip($ip, $which);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate MAC address
+	 *
+	 * @param	string	$mac
+	 * @return	bool
+	 */
+	public function valid_mac($mac)
+	{
+		if ( ! is_php('5.5'))
+		{
+			// Most common format, with either dash or colon delimiters
+			if (preg_match('#\A[0-9a-f]{2}(?<delimiter>[:-])([0-9a-f]{2}(?P=delimiter)){4}[0-9a-f]{2}\z#i', $mac))
+			{
+				return TRUE;
+			}
+
+			// The less common format; e.g. 0123.4567.89ab
+			return (bool) preg_match('#((\A|\.)[0-9a-f]{4}){3}\z#i', $mac);
+		}
+
+		return (bool) filter_var($mac, FILTER_VALIDATE_MAC);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Alpha
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function alpha($str)
+	{
+		return ctype_alpha($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Alpha-numeric
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function alpha_numeric($str)
+	{
+		return ctype_alnum((string) $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Alpha-numeric w/ spaces
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function alpha_numeric_spaces($str)
+	{
+		return (bool) preg_match('/^[A-Z0-9 ]+$/i', $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Alpha-numeric with underscores and dashes
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function alpha_dash($str)
+	{
+		return (bool) preg_match('/^[a-z0-9_-]+$/i', $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Numeric
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function numeric($str)
+	{
+		return (bool) preg_match('/^[\-+]?[0-9]*\.?[0-9]+$/', $str);
+
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Integer
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function integer($str)
+	{
+		return (bool) preg_match('/^[\-+]?[0-9]+$/', $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decimal number
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function decimal($str)
+	{
+		return (bool) preg_match('/^[\-+]?[0-9]+\.[0-9]+$/', $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Greater than
+	 *
+	 * @param	string
+	 * @param	int
+	 * @return	bool
+	 */
+	public function greater_than($str, $min)
+	{
+		return is_numeric($str) ? ($str > $min) : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Equal to or Greater than
+	 *
+	 * @param	string
+	 * @param	int
+	 * @return	bool
+	 */
+	public function greater_than_equal_to($str, $min)
+	{
+		return is_numeric($str) ? ($str >= $min) : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Less than
+	 *
+	 * @param	string
+	 * @param	int
+	 * @return	bool
+	 */
+	public function less_than($str, $max)
+	{
+		return is_numeric($str) ? ($str < $max) : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Equal to or Less than
+	 *
+	 * @param	string
+	 * @param	int
+	 * @return	bool
+	 */
+	public function less_than_equal_to($str, $max)
+	{
+		return is_numeric($str) ? ($str <= $max) : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Value should be within an array of values
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	public function in_list($value, $list)
+	{
+		return in_array($value, explode(',', $list), TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is a Natural number  (0,1,2,3, etc.)
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function is_natural($str)
+	{
+		return ctype_digit((string) $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is a Natural number, but not a zero  (1,2,3, etc.)
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function is_natural_no_zero($str)
+	{
+		return ($str != 0 && ctype_digit((string) $str));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Valid Base64
+	 *
+	 * Tests a string for characters outside of the Base64 alphabet
+	 * as defined by RFC 2045 http://www.faqs.org/rfcs/rfc2045
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function valid_base64($str)
+	{
+		return (base64_encode(base64_decode($str)) === $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep URL
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function prep_url($str = '')
+	{
+		if ($str !== '' && stripos($str, 'http://') !== 0 && stripos($str, 'https://') !== 0)
+		{
+			return 'http://'.$str;
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Strip Image Tags
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function strip_image_tags($str)
+	{
+		return $this->CI->security->strip_image_tags($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Convert PHP tags to entities
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function encode_php_tags($str)
+	{
+		return str_replace(array('<?', '?>'), array('&lt;?', '?&gt;'), $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reset validation vars
+	 *
+	 * Prevents subsequent validation routines from being affected by the
+	 * results of any previous validation routine due to the CI singleton.
+	 *
+	 * @return	CI_Form_validation
+	 */
+	public function reset_validation()
+	{
+		$this->_field_data = array();
+		$this->_error_array = array();
+		$this->_error_messages = array();
+		$this->error_string = '';
+		return $this;
+	}
+
+}
diff --git a/system/libraries/Ftp.php b/system/libraries/Ftp.php
new file mode 100644
index 00000000..61fa80c0
--- /dev/null
+++ b/system/libraries/Ftp.php
@@ -0,0 +1,667 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * FTP Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/ftp.html
+ */
+class CI_FTP {
+
+	/**
+	 * FTP Server hostname
+	 *
+	 * @var	string
+	 */
+	public $hostname = '';
+
+	/**
+	 * FTP Username
+	 *
+	 * @var	string
+	 */
+	public $username = '';
+
+	/**
+	 * FTP Password
+	 *
+	 * @var	string
+	 */
+	public $password = '';
+
+	/**
+	 * FTP Server port
+	 *
+	 * @var	int
+	 */
+	public $port = 21;
+
+	/**
+	 * Passive mode flag
+	 *
+	 * @var	bool
+	 */
+	public $passive = TRUE;
+
+	/**
+	 * Debug flag
+	 *
+	 * Specifies whether to display error messages.
+	 *
+	 * @var	bool
+	 */
+	public $debug = FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Connection ID
+	 *
+	 * @var	resource
+	 */
+	protected $conn_id;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		empty($config) OR $this->initialize($config);
+		log_message('info', 'FTP Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize preferences
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function initialize($config = array())
+	{
+		foreach ($config as $key => $val)
+		{
+			if (isset($this->$key))
+			{
+				$this->$key = $val;
+			}
+		}
+
+		// Prep the hostname
+		$this->hostname = preg_replace('|.+?://|', '', $this->hostname);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FTP Connect
+	 *
+	 * @param	array	 $config	Connection values
+	 * @return	bool
+	 */
+	public function connect($config = array())
+	{
+		if (count($config) > 0)
+		{
+			$this->initialize($config);
+		}
+
+		if (FALSE === ($this->conn_id = @ftp_connect($this->hostname, $this->port)))
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_connect');
+			}
+
+			return FALSE;
+		}
+
+		if ( ! $this->_login())
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_login');
+			}
+
+			return FALSE;
+		}
+
+		// Set passive mode if needed
+		if ($this->passive === TRUE)
+		{
+			ftp_pasv($this->conn_id, TRUE);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FTP Login
+	 *
+	 * @return	bool
+	 */
+	protected function _login()
+	{
+		return @ftp_login($this->conn_id, $this->username, $this->password);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validates the connection ID
+	 *
+	 * @return	bool
+	 */
+	protected function _is_conn()
+	{
+		if ( ! is_resource($this->conn_id))
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_no_connection');
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Change directory
+	 *
+	 * The second parameter lets us momentarily turn off debugging so that
+	 * this function can be used to test for the existence of a folder
+	 * without throwing an error. There's no FTP equivalent to is_dir()
+	 * so we do it by trying to change to a particular directory.
+	 * Internally, this parameter is only used by the "mirror" function below.
+	 *
+	 * @param	string	$path
+	 * @param	bool	$suppress_debug
+	 * @return	bool
+	 */
+	public function changedir($path, $suppress_debug = FALSE)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		$result = @ftp_chdir($this->conn_id, $path);
+
+		if ($result === FALSE)
+		{
+			if ($this->debug === TRUE && $suppress_debug === FALSE)
+			{
+				$this->_error('ftp_unable_to_changedir');
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create a directory
+	 *
+	 * @param	string	$path
+	 * @param	int	$permissions
+	 * @return	bool
+	 */
+	public function mkdir($path, $permissions = NULL)
+	{
+		if ($path === '' OR ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		$result = @ftp_mkdir($this->conn_id, $path);
+
+		if ($result === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_mkdir');
+			}
+
+			return FALSE;
+		}
+
+		// Set file permissions if needed
+		if ($permissions !== NULL)
+		{
+			$this->chmod($path, (int) $permissions);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Upload a file to the server
+	 *
+	 * @param	string	$locpath
+	 * @param	string	$rempath
+	 * @param	string	$mode
+	 * @param	int	$permissions
+	 * @return	bool
+	 */
+	public function upload($locpath, $rempath, $mode = 'auto', $permissions = NULL)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		if ( ! file_exists($locpath))
+		{
+			$this->_error('ftp_no_source_file');
+			return FALSE;
+		}
+
+		// Set the mode if not specified
+		if ($mode === 'auto')
+		{
+			// Get the file extension so we can set the upload type
+			$ext = $this->_getext($locpath);
+			$mode = $this->_settype($ext);
+		}
+
+		$mode = ($mode === 'ascii') ? FTP_ASCII : FTP_BINARY;
+
+		$result = @ftp_put($this->conn_id, $rempath, $locpath, $mode);
+
+		if ($result === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_upload');
+			}
+
+			return FALSE;
+		}
+
+		// Set file permissions if needed
+		if ($permissions !== NULL)
+		{
+			$this->chmod($rempath, (int) $permissions);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Download a file from a remote server to the local server
+	 *
+	 * @param	string	$rempath
+	 * @param	string	$locpath
+	 * @param	string	$mode
+	 * @return	bool
+	 */
+	public function download($rempath, $locpath, $mode = 'auto')
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		// Set the mode if not specified
+		if ($mode === 'auto')
+		{
+			// Get the file extension so we can set the upload type
+			$ext = $this->_getext($rempath);
+			$mode = $this->_settype($ext);
+		}
+
+		$mode = ($mode === 'ascii') ? FTP_ASCII : FTP_BINARY;
+
+		$result = @ftp_get($this->conn_id, $locpath, $rempath, $mode);
+
+		if ($result === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_download');
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rename (or move) a file
+	 *
+	 * @param	string	$old_file
+	 * @param	string	$new_file
+	 * @param	bool	$move
+	 * @return	bool
+	 */
+	public function rename($old_file, $new_file, $move = FALSE)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		$result = @ftp_rename($this->conn_id, $old_file, $new_file);
+
+		if ($result === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_'.($move === FALSE ? 'rename' : 'move'));
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Move a file
+	 *
+	 * @param	string	$old_file
+	 * @param	string	$new_file
+	 * @return	bool
+	 */
+	public function move($old_file, $new_file)
+	{
+		return $this->rename($old_file, $new_file, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rename (or move) a file
+	 *
+	 * @param	string	$filepath
+	 * @return	bool
+	 */
+	public function delete_file($filepath)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		$result = @ftp_delete($this->conn_id, $filepath);
+
+		if ($result === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_delete');
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete a folder and recursively delete everything (including sub-folders)
+	 * contained within it.
+	 *
+	 * @param	string	$filepath
+	 * @return	bool
+	 */
+	public function delete_dir($filepath)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		// Add a trailing slash to the file path if needed
+		$filepath = preg_replace('/(.+?)\/*$/', '\\1/', $filepath);
+
+		$list = $this->list_files($filepath);
+		if ( ! empty($list))
+		{
+			for ($i = 0, $c = count($list); $i < $c; $i++)
+			{
+				// If we can't delete the item it's probably a directory,
+				// so we'll recursively call delete_dir()
+				if ( ! preg_match('#/\.\.?$#', $list[$i]) && ! @ftp_delete($this->conn_id, $list[$i]))
+				{
+					$this->delete_dir($filepath.$list[$i]);
+				}
+			}
+		}
+
+		if (@ftp_rmdir($this->conn_id, $filepath) === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_delete');
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set file permissions
+	 *
+	 * @param	string	$path	File path
+	 * @param	int	$perm	Permissions
+	 * @return	bool
+	 */
+	public function chmod($path, $perm)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		if (@ftp_chmod($this->conn_id, $perm, $path) === FALSE)
+		{
+			if ($this->debug === TRUE)
+			{
+				$this->_error('ftp_unable_to_chmod');
+			}
+
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * FTP List files in the specified directory
+	 *
+	 * @param	string	$path
+	 * @return	array
+	 */
+	public function list_files($path = '.')
+	{
+		return $this->_is_conn()
+			? ftp_nlist($this->conn_id, $path)
+			: FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Read a directory and recreate it remotely
+	 *
+	 * This function recursively reads a folder and everything it contains
+	 * (including sub-folders) and creates a mirror via FTP based on it.
+	 * Whatever the directory structure of the original file path will be
+	 * recreated on the server.
+	 *
+	 * @param	string	$locpath	Path to source with trailing slash
+	 * @param	string	$rempath	Path to destination - include the base folder with trailing slash
+	 * @return	bool
+	 */
+	public function mirror($locpath, $rempath)
+	{
+		if ( ! $this->_is_conn())
+		{
+			return FALSE;
+		}
+
+		// Open the local file path
+		if ($fp = @opendir($locpath))
+		{
+			// Attempt to open the remote file path and try to create it, if it doesn't exist
+			if ( ! $this->changedir($rempath, TRUE) && ( ! $this->mkdir($rempath) OR ! $this->changedir($rempath)))
+			{
+				return FALSE;
+			}
+
+			// Recursively read the local directory
+			while (FALSE !== ($file = readdir($fp)))
+			{
+				if (is_dir($locpath.$file) && $file[0] !== '.')
+				{
+					$this->mirror($locpath.$file.'/', $rempath.$file.'/');
+				}
+				elseif ($file[0] !== '.')
+				{
+					// Get the file extension so we can se the upload type
+					$ext = $this->_getext($file);
+					$mode = $this->_settype($ext);
+
+					$this->upload($locpath.$file, $rempath.$file, $mode);
+				}
+			}
+
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Extract the file extension
+	 *
+	 * @param	string	$filename
+	 * @return	string
+	 */
+	protected function _getext($filename)
+	{
+		return (($dot = strrpos($filename, '.')) === FALSE)
+			? 'txt'
+			: substr($filename, $dot + 1);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the upload type
+	 *
+	 * @param	string	$ext	Filename extension
+	 * @return	string
+	 */
+	protected function _settype($ext)
+	{
+		return in_array($ext, array('txt', 'text', 'php', 'phps', 'php4', 'js', 'css', 'htm', 'html', 'phtml', 'shtml', 'log', 'xml'), TRUE)
+			? 'ascii'
+			: 'binary';
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Close the connection
+	 *
+	 * @return	bool
+	 */
+	public function close()
+	{
+		return $this->_is_conn()
+			? @ftp_close($this->conn_id)
+			: FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Display error message
+	 *
+	 * @param	string	$line
+	 * @return	void
+	 */
+	protected function _error($line)
+	{
+		$CI =& get_instance();
+		$CI->lang->load('ftp');
+		show_error($CI->lang->line($line));
+	}
+
+}
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
new file mode 100644
index 00000000..6aeee179
--- /dev/null
+++ b/system/libraries/Image_lib.php
@@ -0,0 +1,1878 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Image Manipulation class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Image_lib
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/image_lib.html
+ */
+class CI_Image_lib {
+
+	/**
+	 * PHP extension/library to use for image manipulation
+	 * Can be: imagemagick, netpbm, gd, gd2
+	 *
+	 * @var string
+	 */
+	public $image_library		= 'gd2';
+
+	/**
+	 * Path to the graphic library (if applicable)
+	 *
+	 * @var string
+	 */
+	public $library_path		= '';
+
+	/**
+	 * Whether to send to browser or write to disk
+	 *
+	 * @var bool
+	 */
+	public $dynamic_output		= FALSE;
+
+	/**
+	 * Path to original image
+	 *
+	 * @var string
+	 */
+	public $source_image		= '';
+
+	/**
+	 * Path to the modified image
+	 *
+	 * @var string
+	 */
+	public $new_image		= '';
+
+	/**
+	 * Image width
+	 *
+	 * @var int
+	 */
+	public $width			= '';
+
+	/**
+	 * Image height
+	 *
+	 * @var int
+	 */
+	public $height			= '';
+
+	/**
+	 * Quality percentage of new image
+	 *
+	 * @var int
+	 */
+	public $quality			= 90;
+
+	/**
+	 * Whether to create a thumbnail
+	 *
+	 * @var bool
+	 */
+	public $create_thumb		= FALSE;
+
+	/**
+	 * String to add to thumbnail version of image
+	 *
+	 * @var string
+	 */
+	public $thumb_marker		= '_thumb';
+
+	/**
+	 * Whether to maintain aspect ratio when resizing or use hard values
+	 *
+	 * @var bool
+	 */
+	public $maintain_ratio		= TRUE;
+
+	/**
+	 * auto, height, or width.  Determines what to use as the master dimension
+	 *
+	 * @var string
+	 */
+	public $master_dim		= 'auto';
+
+	/**
+	 * Angle at to rotate image
+	 *
+	 * @var string
+	 */
+	public $rotation_angle		= '';
+
+	/**
+	 * X Coordinate for manipulation of the current image
+	 *
+	 * @var int
+	 */
+	public $x_axis			= '';
+
+	/**
+	 * Y Coordinate for manipulation of the current image
+	 *
+	 * @var int
+	 */
+	public $y_axis			= '';
+
+	// --------------------------------------------------------------------------
+	// Watermark Vars
+	// --------------------------------------------------------------------------
+
+	/**
+	 * Watermark text if graphic is not used
+	 *
+	 * @var string
+	 */
+	public $wm_text			= '';
+
+	/**
+	 * Type of watermarking.  Options:  text/overlay
+	 *
+	 * @var string
+	 */
+	public $wm_type			= 'text';
+
+	/**
+	 * Default transparency for watermark
+	 *
+	 * @var int
+	 */
+	public $wm_x_transp		= 4;
+
+	/**
+	 * Default transparency for watermark
+	 *
+	 * @var int
+	 */
+	public $wm_y_transp		= 4;
+
+	/**
+	 * Watermark image path
+	 *
+	 * @var string
+	 */
+	public $wm_overlay_path		= '';
+
+	/**
+	 * TT font
+	 *
+	 * @var string
+	 */
+	public $wm_font_path		= '';
+
+	/**
+	 * Font size (different versions of GD will either use points or pixels)
+	 *
+	 * @var int
+	 */
+	public $wm_font_size		= 17;
+
+	/**
+	 * Vertical alignment:   T M B
+	 *
+	 * @var string
+	 */
+	public $wm_vrt_alignment	= 'B';
+
+	/**
+	 * Horizontal alignment: L R C
+	 *
+	 * @var string
+	 */
+	public $wm_hor_alignment	= 'C';
+
+	/**
+	 * Padding around text
+	 *
+	 * @var int
+	 */
+	public $wm_padding			= 0;
+
+	/**
+	 * Lets you push text to the right
+	 *
+	 * @var int
+	 */
+	public $wm_hor_offset		= 0;
+
+	/**
+	 * Lets you push text down
+	 *
+	 * @var int
+	 */
+	public $wm_vrt_offset		= 0;
+
+	/**
+	 * Text color
+	 *
+	 * @var string
+	 */
+	protected $wm_font_color	= '#ffffff';
+
+	/**
+	 * Dropshadow color
+	 *
+	 * @var string
+	 */
+	protected $wm_shadow_color	= '';
+
+	/**
+	 * Dropshadow distance
+	 *
+	 * @var int
+	 */
+	public $wm_shadow_distance	= 2;
+
+	/**
+	 * Image opacity: 1 - 100  Only works with image
+	 *
+	 * @var int
+	 */
+	public $wm_opacity		= 50;
+
+	// --------------------------------------------------------------------------
+	// Private Vars
+	// --------------------------------------------------------------------------
+
+	/**
+	 * Source image folder
+	 *
+	 * @var string
+	 */
+	public $source_folder		= '';
+
+	/**
+	 * Destination image folder
+	 *
+	 * @var string
+	 */
+	public $dest_folder		= '';
+
+	/**
+	 * Image mime-type
+	 *
+	 * @var string
+	 */
+	public $mime_type		= '';
+
+	/**
+	 * Original image width
+	 *
+	 * @var int
+	 */
+	public $orig_width		= '';
+
+	/**
+	 * Original image height
+	 *
+	 * @var int
+	 */
+	public $orig_height		= '';
+
+	/**
+	 * Image format
+	 *
+	 * @var string
+	 */
+	public $image_type		= '';
+
+	/**
+	 * Size of current image
+	 *
+	 * @var string
+	 */
+	public $size_str		= '';
+
+	/**
+	 * Full path to source image
+	 *
+	 * @var string
+	 */
+	public $full_src_path		= '';
+
+	/**
+	 * Full path to destination image
+	 *
+	 * @var string
+	 */
+	public $full_dst_path		= '';
+
+	/**
+	 * File permissions
+	 *
+	 * @var	int
+	 */
+	public $file_permissions = 0644;
+
+	/**
+	 * Name of function to create image
+	 *
+	 * @var string
+	 */
+	public $create_fnc		= 'imagecreatetruecolor';
+
+	/**
+	 * Name of function to copy image
+	 *
+	 * @var string
+	 */
+	public $copy_fnc		= 'imagecopyresampled';
+
+	/**
+	 * Error messages
+	 *
+	 * @var array
+	 */
+	public $error_msg		= array();
+
+	/**
+	 * Whether to have a drop shadow on watermark
+	 *
+	 * @var bool
+	 */
+	protected $wm_use_drop_shadow	= FALSE;
+
+	/**
+	 * Whether to use truetype fonts
+	 *
+	 * @var bool
+	 */
+	public $wm_use_truetype	= FALSE;
+
+	/**
+	 * Initialize Image Library
+	 *
+	 * @param	array	$props
+	 * @return	void
+	 */
+	public function __construct($props = array())
+	{
+		if (count($props) > 0)
+		{
+			$this->initialize($props);
+		}
+
+		/**
+		 * A work-around for some improperly formatted, but
+		 * usable JPEGs; known to be produced by Samsung
+		 * smartphones' front-facing cameras.
+		 *
+		 * @see	https://github.com/bcit-ci/CodeIgniter/issues/4967
+		 * @see	https://bugs.php.net/bug.php?id=72404
+		 */
+		ini_set('gd.jpeg_ignore_warning', 1);
+
+		log_message('info', 'Image Lib Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize image properties
+	 *
+	 * Resets values in case this class is used in a loop
+	 *
+	 * @return	void
+	 */
+	public function clear()
+	{
+		$props = array('thumb_marker', 'library_path', 'source_image', 'new_image', 'width', 'height', 'rotation_angle', 'x_axis', 'y_axis', 'wm_text', 'wm_overlay_path', 'wm_font_path', 'wm_shadow_color', 'source_folder', 'dest_folder', 'mime_type', 'orig_width', 'orig_height', 'image_type', 'size_str', 'full_src_path', 'full_dst_path');
+
+		foreach ($props as $val)
+		{
+			$this->$val = '';
+		}
+
+		$this->image_library 		= 'gd2';
+		$this->dynamic_output 		= FALSE;
+		$this->quality 				= 90;
+		$this->create_thumb 		= FALSE;
+		$this->thumb_marker 		= '_thumb';
+		$this->maintain_ratio 		= TRUE;
+		$this->master_dim 			= 'auto';
+		$this->wm_type 				= 'text';
+		$this->wm_x_transp 			= 4;
+		$this->wm_y_transp 			= 4;
+		$this->wm_font_size 		= 17;
+		$this->wm_vrt_alignment 	= 'B';
+		$this->wm_hor_alignment 	= 'C';
+		$this->wm_padding 			= 0;
+		$this->wm_hor_offset 		= 0;
+		$this->wm_vrt_offset 		= 0;
+		$this->wm_font_color		= '#ffffff';
+		$this->wm_shadow_distance 	= 2;
+		$this->wm_opacity 			= 50;
+		$this->create_fnc 			= 'imagecreatetruecolor';
+		$this->copy_fnc 			= 'imagecopyresampled';
+		$this->error_msg 			= array();
+		$this->wm_use_drop_shadow 	= FALSE;
+		$this->wm_use_truetype 		= FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * initialize image preferences
+	 *
+	 * @param	array
+	 * @return	bool
+	 */
+	public function initialize($props = array())
+	{
+		// Convert array elements into class variables
+		if (count($props) > 0)
+		{
+			foreach ($props as $key => $val)
+			{
+				if (property_exists($this, $key))
+				{
+					if (in_array($key, array('wm_font_color', 'wm_shadow_color'), TRUE))
+					{
+						if (preg_match('/^#?([0-9a-f]{3}|[0-9a-f]{6})$/i', $val, $matches))
+						{
+							/* $matches[1] contains our hex color value, but it might be
+							 * both in the full 6-length format or the shortened 3-length
+							 * value.
+							 * We'll later need the full version, so we keep it if it's
+							 * already there and if not - we'll convert to it. We can
+							 * access string characters by their index as in an array,
+							 * so we'll do that and use concatenation to form the final
+							 * value:
+							 */
+							$val = (strlen($matches[1]) === 6)
+								? '#'.$matches[1]
+								: '#'.$matches[1][0].$matches[1][0].$matches[1][1].$matches[1][1].$matches[1][2].$matches[1][2];
+						}
+						else
+						{
+							continue;
+						}
+					}
+					elseif (in_array($key, array('width', 'height'), TRUE) && ! ctype_digit((string) $val))
+					{
+						continue;
+					}
+
+					$this->$key = $val;
+				}
+			}
+		}
+
+		// Is there a source image? If not, there's no reason to continue
+		if ($this->source_image === '')
+		{
+			$this->set_error('imglib_source_image_required');
+			return FALSE;
+		}
+
+		/* Is getimagesize() available?
+		 *
+		 * We use it to determine the image properties (width/height).
+		 * Note: We need to figure out how to determine image
+		 * properties using ImageMagick and NetPBM
+		 */
+		if ( ! function_exists('getimagesize'))
+		{
+			$this->set_error('imglib_gd_required_for_props');
+			return FALSE;
+		}
+
+		$this->image_library = strtolower($this->image_library);
+
+		/* Set the full server path
+		 *
+		 * The source image may or may not contain a path.
+		 * Either way, we'll try use realpath to generate the
+		 * full server path in order to more reliably read it.
+		 */
+		if (($full_source_path = realpath($this->source_image)) !== FALSE)
+		{
+			$full_source_path = str_replace('\\', '/', $full_source_path);
+		}
+		else
+		{
+			$full_source_path = $this->source_image;
+		}
+
+		$x = explode('/', $full_source_path);
+		$this->source_image = end($x);
+		$this->source_folder = str_replace($this->source_image, '', $full_source_path);
+
+		// Set the Image Properties
+		if ( ! $this->get_image_properties($this->source_folder.$this->source_image))
+		{
+			return FALSE;
+		}
+
+		/*
+		 * Assign the "new" image name/path
+		 *
+		 * If the user has set a "new_image" name it means
+		 * we are making a copy of the source image. If not
+		 * it means we are altering the original. We'll
+		 * set the destination filename and path accordingly.
+		 */
+		if ($this->new_image === '')
+		{
+			$this->dest_image  = $this->source_image;
+			$this->dest_folder = $this->source_folder;
+		}
+		elseif (strpos($this->new_image, '/') === FALSE && strpos($this->new_image, '\\') === FALSE)
+		{
+			$this->dest_image  = $this->new_image;
+			$this->dest_folder = $this->source_folder;
+		}
+		else
+		{
+			// Is there a file name?
+			if ( ! preg_match('#\.(jpg|jpeg|gif|png)$#i', $this->new_image))
+			{
+				$this->dest_image  = $this->source_image;
+				$this->dest_folder = $this->new_image;
+			}
+			else
+			{
+				$x = explode('/', str_replace('\\', '/', $this->new_image));
+				$this->dest_image  = end($x);
+				$this->dest_folder = str_replace($this->dest_image, '', $this->new_image);
+			}
+
+			$this->dest_folder = realpath($this->dest_folder).'/';
+		}
+
+		/* Compile the finalized filenames/paths
+		 *
+		 * We'll create two master strings containing the
+		 * full server path to the source image and the
+		 * full server path to the destination image.
+		 * We'll also split the destination image name
+		 * so we can insert the thumbnail marker if needed.
+		 */
+		if ($this->create_thumb === FALSE OR $this->thumb_marker === '')
+		{
+			$this->thumb_marker = '';
+		}
+
+		$xp = $this->explode_name($this->dest_image);
+
+		$filename = $xp['name'];
+		$file_ext = $xp['ext'];
+
+		$this->full_src_path = $this->source_folder.$this->source_image;
+		$this->full_dst_path = $this->dest_folder.$filename.$this->thumb_marker.$file_ext;
+
+		/* Should we maintain image proportions?
+		 *
+		 * When creating thumbs or copies, the target width/height
+		 * might not be in correct proportion with the source
+		 * image's width/height. We'll recalculate it here.
+		 */
+		if ($this->maintain_ratio === TRUE && ($this->width !== 0 OR $this->height !== 0))
+		{
+			$this->image_reproportion();
+		}
+
+		/* Was a width and height specified?
+		 *
+		 * If the destination width/height was not submitted we
+		 * will use the values from the actual file
+		 */
+		if ($this->width === '')
+		{
+			$this->width = $this->orig_width;
+		}
+
+		if ($this->height === '')
+		{
+			$this->height = $this->orig_height;
+		}
+
+		// Set the quality
+		$this->quality = trim(str_replace('%', '', $this->quality));
+
+		if ($this->quality === '' OR $this->quality === 0 OR ! ctype_digit($this->quality))
+		{
+			$this->quality = 90;
+		}
+
+		// Set the x/y coordinates
+		is_numeric($this->x_axis) OR $this->x_axis = 0;
+		is_numeric($this->y_axis) OR $this->y_axis = 0;
+
+		// Watermark-related Stuff...
+		if ($this->wm_overlay_path !== '')
+		{
+			$this->wm_overlay_path = str_replace('\\', '/', realpath($this->wm_overlay_path));
+		}
+
+		if ($this->wm_shadow_color !== '')
+		{
+			$this->wm_use_drop_shadow = TRUE;
+		}
+		elseif ($this->wm_use_drop_shadow === TRUE && $this->wm_shadow_color === '')
+		{
+			$this->wm_use_drop_shadow = FALSE;
+		}
+
+		if ($this->wm_font_path !== '')
+		{
+			$this->wm_use_truetype = TRUE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Resize
+	 *
+	 * This is a wrapper function that chooses the proper
+	 * resize function based on the protocol specified
+	 *
+	 * @return	bool
+	 */
+	public function resize()
+	{
+		$protocol = ($this->image_library === 'gd2') ? 'image_process_gd' : 'image_process_'.$this->image_library;
+		return $this->$protocol('resize');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Crop
+	 *
+	 * This is a wrapper function that chooses the proper
+	 * cropping function based on the protocol specified
+	 *
+	 * @return	bool
+	 */
+	public function crop()
+	{
+		$protocol = ($this->image_library === 'gd2') ? 'image_process_gd' : 'image_process_'.$this->image_library;
+		return $this->$protocol('crop');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Rotate
+	 *
+	 * This is a wrapper function that chooses the proper
+	 * rotation function based on the protocol specified
+	 *
+	 * @return	bool
+	 */
+	public function rotate()
+	{
+		// Allowed rotation values
+		$degs = array(90, 180, 270, 'vrt', 'hor');
+
+		if ($this->rotation_angle === '' OR ! in_array($this->rotation_angle, $degs))
+		{
+			$this->set_error('imglib_rotation_angle_required');
+			return FALSE;
+		}
+
+		// Reassign the width and height
+		if ($this->rotation_angle === 90 OR $this->rotation_angle === 270)
+		{
+			$this->width	= $this->orig_height;
+			$this->height	= $this->orig_width;
+		}
+		else
+		{
+			$this->width	= $this->orig_width;
+			$this->height	= $this->orig_height;
+		}
+
+		// Choose resizing function
+		if ($this->image_library === 'imagemagick' OR $this->image_library === 'netpbm')
+		{
+			$protocol = 'image_process_'.$this->image_library;
+			return $this->$protocol('rotate');
+		}
+
+		return ($this->rotation_angle === 'hor' OR $this->rotation_angle === 'vrt')
+			? $this->image_mirror_gd()
+			: $this->image_rotate_gd();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Process Using GD/GD2
+	 *
+	 * This function will resize or crop
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function image_process_gd($action = 'resize')
+	{
+		$v2_override = FALSE;
+
+		// If the target width/height match the source, AND if the new file name is not equal to the old file name
+		// we'll simply make a copy of the original with the new name... assuming dynamic rendering is off.
+		if ($this->dynamic_output === FALSE && $this->orig_width === $this->width && $this->orig_height === $this->height)
+		{
+			if ($this->source_image !== $this->new_image && @copy($this->full_src_path, $this->full_dst_path))
+			{
+				chmod($this->full_dst_path, $this->file_permissions);
+			}
+
+			return TRUE;
+		}
+
+		// Let's set up our values based on the action
+		if ($action === 'crop')
+		{
+			// Reassign the source width/height if cropping
+			$this->orig_width  = $this->width;
+			$this->orig_height = $this->height;
+
+			// GD 2.0 has a cropping bug so we'll test for it
+			if ($this->gd_version() !== FALSE)
+			{
+				$gd_version = str_replace('0', '', $this->gd_version());
+				$v2_override = ($gd_version == 2);
+			}
+		}
+		else
+		{
+			// If resizing the x/y axis must be zero
+			$this->x_axis = 0;
+			$this->y_axis = 0;
+		}
+
+		// Create the image handle
+		if ( ! ($src_img = $this->image_create_gd()))
+		{
+			return FALSE;
+		}
+
+		/* Create the image
+		 *
+		 * Old conditional which users report cause problems with shared GD libs who report themselves as "2.0 or greater"
+		 * it appears that this is no longer the issue that it was in 2004, so we've removed it, retaining it in the comment
+		 * below should that ever prove inaccurate.
+		 *
+		 * if ($this->image_library === 'gd2' && function_exists('imagecreatetruecolor') && $v2_override === FALSE)
+		 */
+		if ($this->image_library === 'gd2' && function_exists('imagecreatetruecolor'))
+		{
+			$create	= 'imagecreatetruecolor';
+			$copy	= 'imagecopyresampled';
+		}
+		else
+		{
+			$create	= 'imagecreate';
+			$copy	= 'imagecopyresized';
+		}
+
+		$dst_img = $create($this->width, $this->height);
+
+		if ($this->image_type === 3) // png we can actually preserve transparency
+		{
+			imagealphablending($dst_img, FALSE);
+			imagesavealpha($dst_img, TRUE);
+		}
+
+		$copy($dst_img, $src_img, 0, 0, $this->x_axis, $this->y_axis, $this->width, $this->height, $this->orig_width, $this->orig_height);
+
+		// Show the image
+		if ($this->dynamic_output === TRUE)
+		{
+			$this->image_display_gd($dst_img);
+		}
+		elseif ( ! $this->image_save_gd($dst_img)) // Or save it
+		{
+			return FALSE;
+		}
+
+		// Kill the file handles
+		imagedestroy($dst_img);
+		imagedestroy($src_img);
+
+		if ($this->dynamic_output !== TRUE)
+		{
+			chmod($this->full_dst_path, $this->file_permissions);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Process Using ImageMagick
+	 *
+	 * This function will resize, crop or rotate
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function image_process_imagemagick($action = 'resize')
+	{
+		// Do we have a vaild library path?
+		if ($this->library_path === '')
+		{
+			$this->set_error('imglib_libpath_invalid');
+			return FALSE;
+		}
+
+		if ( ! preg_match('/convert$/i', $this->library_path))
+		{
+			$this->library_path = rtrim($this->library_path, '/').'/convert';
+		}
+
+		// Execute the command
+		$cmd = $this->library_path.' -quality '.$this->quality;
+
+		if ($action === 'crop')
+		{
+			$cmd .= ' -crop '.$this->width.'x'.$this->height.'+'.$this->x_axis.'+'.$this->y_axis;
+		}
+		elseif ($action === 'rotate')
+		{
+			$cmd .= ($this->rotation_angle === 'hor' OR $this->rotation_angle === 'vrt')
+					? ' -flop'
+					: ' -rotate '.$this->rotation_angle;
+		}
+		else // Resize
+		{
+			if($this->maintain_ratio === TRUE)
+			{
+				$cmd .= ' -resize '.$this->width.'x'.$this->height;
+			}
+			else
+			{
+				$cmd .= ' -resize '.$this->width.'x'.$this->height.'\!';
+			}
+		}
+
+		$cmd .= ' '.escapeshellarg($this->full_src_path).' '.escapeshellarg($this->full_dst_path).' 2>&1';
+
+		$retval = 1;
+		// exec() might be disabled
+		if (function_usable('exec'))
+		{
+			@exec($cmd, $output, $retval);
+		}
+
+		// Did it work?
+		if ($retval > 0)
+		{
+			$this->set_error('imglib_image_process_failed');
+			return FALSE;
+		}
+
+		chmod($this->full_dst_path, $this->file_permissions);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Process Using NetPBM
+	 *
+	 * This function will resize, crop or rotate
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function image_process_netpbm($action = 'resize')
+	{
+		if ($this->library_path === '')
+		{
+			$this->set_error('imglib_libpath_invalid');
+			return FALSE;
+		}
+
+		// Build the resizing command
+		switch ($this->image_type)
+		{
+			case 1 :
+				$cmd_in		= 'giftopnm';
+				$cmd_out	= 'ppmtogif';
+				break;
+			case 2 :
+				$cmd_in		= 'jpegtopnm';
+				$cmd_out	= 'ppmtojpeg';
+				break;
+			case 3 :
+				$cmd_in		= 'pngtopnm';
+				$cmd_out	= 'ppmtopng';
+				break;
+			case 18 :
+				$cmd_in		= 'webptopnm';
+				$cmd_out	= 'ppmtowebp';
+				break;
+		}
+
+		if ($action === 'crop')
+		{
+			$cmd_inner = 'pnmcut -left '.$this->x_axis.' -top '.$this->y_axis.' -width '.$this->width.' -height '.$this->height;
+		}
+		elseif ($action === 'rotate')
+		{
+			switch ($this->rotation_angle)
+			{
+				case 90:	$angle = 'r270';
+					break;
+				case 180:	$angle = 'r180';
+					break;
+				case 270:	$angle = 'r90';
+					break;
+				case 'vrt':	$angle = 'tb';
+					break;
+				case 'hor':	$angle = 'lr';
+					break;
+			}
+
+			$cmd_inner = 'pnmflip -'.$angle.' ';
+		}
+		else // Resize
+		{
+			$cmd_inner = 'pnmscale -xysize '.$this->width.' '.$this->height;
+		}
+
+		$cmd = $this->library_path.$cmd_in.' '.escapeshellarg($this->full_src_path).' | '.$cmd_inner.' | '.$cmd_out.' > '.$this->dest_folder.'netpbm.tmp';
+
+		$retval = 1;
+		// exec() might be disabled
+		if (function_usable('exec'))
+		{
+			@exec($cmd, $output, $retval);
+		}
+
+		// Did it work?
+		if ($retval > 0)
+		{
+			$this->set_error('imglib_image_process_failed');
+			return FALSE;
+		}
+
+		// With NetPBM we have to create a temporary image.
+		// If you try manipulating the original it fails so
+		// we have to rename the temp file.
+		copy($this->dest_folder.'netpbm.tmp', $this->full_dst_path);
+		unlink($this->dest_folder.'netpbm.tmp');
+		chmod($this->full_dst_path, $this->file_permissions);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Rotate Using GD
+	 *
+	 * @return	bool
+	 */
+	public function image_rotate_gd()
+	{
+		// Create the image handle
+		if ( ! ($src_img = $this->image_create_gd()))
+		{
+			return FALSE;
+		}
+
+		// Set the background color
+		// This won't work with transparent PNG files so we are
+		// going to have to figure out how to determine the color
+		// of the alpha channel in a future release.
+
+		$white = imagecolorallocate($src_img, 255, 255, 255);
+
+		// Rotate it!
+		$dst_img = imagerotate($src_img, $this->rotation_angle, $white);
+
+		// Show the image
+		if ($this->dynamic_output === TRUE)
+		{
+			$this->image_display_gd($dst_img);
+		}
+		elseif ( ! $this->image_save_gd($dst_img)) // ... or save it
+		{
+			return FALSE;
+		}
+
+		// Kill the file handles
+		imagedestroy($dst_img);
+		imagedestroy($src_img);
+
+		chmod($this->full_dst_path, $this->file_permissions);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Mirror Image using GD
+	 *
+	 * This function will flip horizontal or vertical
+	 *
+	 * @return	bool
+	 */
+	public function image_mirror_gd()
+	{
+		if ( ! $src_img = $this->image_create_gd())
+		{
+			return FALSE;
+		}
+
+		$width  = $this->orig_width;
+		$height = $this->orig_height;
+
+		if ($this->rotation_angle === 'hor')
+		{
+			for ($i = 0; $i < $height; $i++)
+			{
+				$left = 0;
+				$right = $width - 1;
+
+				while ($left < $right)
+				{
+					$cl = imagecolorat($src_img, $left, $i);
+					$cr = imagecolorat($src_img, $right, $i);
+
+					imagesetpixel($src_img, $left, $i, $cr);
+					imagesetpixel($src_img, $right, $i, $cl);
+
+					$left++;
+					$right--;
+				}
+			}
+		}
+		else
+		{
+			for ($i = 0; $i < $width; $i++)
+			{
+				$top = 0;
+				$bottom = $height - 1;
+
+				while ($top < $bottom)
+				{
+					$ct = imagecolorat($src_img, $i, $top);
+					$cb = imagecolorat($src_img, $i, $bottom);
+
+					imagesetpixel($src_img, $i, $top, $cb);
+					imagesetpixel($src_img, $i, $bottom, $ct);
+
+					$top++;
+					$bottom--;
+				}
+			}
+		}
+
+		// Show the image
+		if ($this->dynamic_output === TRUE)
+		{
+			$this->image_display_gd($src_img);
+		}
+		elseif ( ! $this->image_save_gd($src_img)) // ... or save it
+		{
+			return FALSE;
+		}
+
+		// Kill the file handles
+		imagedestroy($src_img);
+
+		chmod($this->full_dst_path, $this->file_permissions);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Image Watermark
+	 *
+	 * This is a wrapper function that chooses the type
+	 * of watermarking based on the specified preference.
+	 *
+	 * @return	bool
+	 */
+	public function watermark()
+	{
+		return ($this->wm_type === 'overlay') ? $this->overlay_watermark() : $this->text_watermark();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Watermark - Graphic Version
+	 *
+	 * @return	bool
+	 */
+	public function overlay_watermark()
+	{
+		if ( ! function_exists('imagecolortransparent'))
+		{
+			$this->set_error('imglib_gd_required');
+			return FALSE;
+		}
+
+		// Fetch source image properties
+		$this->get_image_properties();
+
+		// Fetch watermark image properties
+		$props		= $this->get_image_properties($this->wm_overlay_path, TRUE);
+		$wm_img_type	= $props['image_type'];
+		$wm_width	= $props['width'];
+		$wm_height	= $props['height'];
+
+		// Create two image resources
+		$wm_img  = $this->image_create_gd($this->wm_overlay_path, $wm_img_type);
+		$src_img = $this->image_create_gd($this->full_src_path);
+
+		// Reverse the offset if necessary
+		// When the image is positioned at the bottom
+		// we don't want the vertical offset to push it
+		// further down. We want the reverse, so we'll
+		// invert the offset. Same with the horizontal
+		// offset when the image is at the right
+
+		$this->wm_vrt_alignment = strtoupper($this->wm_vrt_alignment[0]);
+		$this->wm_hor_alignment = strtoupper($this->wm_hor_alignment[0]);
+
+		if ($this->wm_vrt_alignment === 'B')
+			$this->wm_vrt_offset = $this->wm_vrt_offset * -1;
+
+		if ($this->wm_hor_alignment === 'R')
+			$this->wm_hor_offset = $this->wm_hor_offset * -1;
+
+		// Set the base x and y axis values
+		$x_axis = $this->wm_hor_offset + $this->wm_padding;
+		$y_axis = $this->wm_vrt_offset + $this->wm_padding;
+
+		// Set the vertical position
+		if ($this->wm_vrt_alignment === 'M')
+		{
+			$y_axis += ($this->orig_height / 2) - ($wm_height / 2);
+		}
+		elseif ($this->wm_vrt_alignment === 'B')
+		{
+			$y_axis += $this->orig_height - $wm_height;
+		}
+
+		// Set the horizontal position
+		if ($this->wm_hor_alignment === 'C')
+		{
+			$x_axis += ($this->orig_width / 2) - ($wm_width / 2);
+		}
+		elseif ($this->wm_hor_alignment === 'R')
+		{
+			$x_axis += $this->orig_width - $wm_width;
+		}
+
+		// Build the finalized image
+		if ($wm_img_type === 3)
+		{
+			@imagealphablending($src_img, TRUE);
+		}
+
+		// Set RGB values for text and shadow
+		$rgba = imagecolorat($wm_img, $this->wm_x_transp, $this->wm_y_transp);
+		$alpha = ($rgba & 0x7F000000) >> 24;
+
+		// make a best guess as to whether we're dealing with an image with alpha transparency or no/binary transparency
+		if ($alpha > 0)
+		{
+			// copy the image directly, the image's alpha transparency being the sole determinant of blending
+			imagecopy($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height);
+		}
+		else
+		{
+			// set our RGB value from above to be transparent and merge the images with the specified opacity
+			imagecolortransparent($wm_img, imagecolorat($wm_img, $this->wm_x_transp, $this->wm_y_transp));
+			imagecopymerge($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height, $this->wm_opacity);
+		}
+
+		// We can preserve transparency for PNG images
+		if ($this->image_type === 3)
+		{
+			imagealphablending($src_img, FALSE);
+			imagesavealpha($src_img, TRUE);
+		}
+
+		// Output the image
+		if ($this->dynamic_output === TRUE)
+		{
+			$this->image_display_gd($src_img);
+		}
+		elseif ( ! $this->image_save_gd($src_img)) // ... or save it
+		{
+			return FALSE;
+		}
+
+		imagedestroy($src_img);
+		imagedestroy($wm_img);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Watermark - Text Version
+	 *
+	 * @return	bool
+	 */
+	public function text_watermark()
+	{
+		if ( ! ($src_img = $this->image_create_gd()))
+		{
+			return FALSE;
+		}
+
+		if ($this->wm_use_truetype === TRUE && ! file_exists($this->wm_font_path))
+		{
+			$this->set_error('imglib_missing_font');
+			return FALSE;
+		}
+
+		// Fetch source image properties
+		$this->get_image_properties();
+
+		// Reverse the vertical offset
+		// When the image is positioned at the bottom
+		// we don't want the vertical offset to push it
+		// further down. We want the reverse, so we'll
+		// invert the offset. Note: The horizontal
+		// offset flips itself automatically
+
+		if ($this->wm_vrt_alignment === 'B')
+		{
+			$this->wm_vrt_offset = $this->wm_vrt_offset * -1;
+		}
+
+		if ($this->wm_hor_alignment === 'R')
+		{
+			$this->wm_hor_offset = $this->wm_hor_offset * -1;
+		}
+
+		// Set font width and height
+		// These are calculated differently depending on
+		// whether we are using the true type font or not
+		if ($this->wm_use_truetype === TRUE)
+		{
+			if (empty($this->wm_font_size))
+			{
+				$this->wm_font_size = 17;
+			}
+
+			if (function_exists('imagettfbbox'))
+			{
+				$temp = imagettfbbox($this->wm_font_size, 0, $this->wm_font_path, $this->wm_text);
+				$temp = $temp[2] - $temp[0];
+
+				$fontwidth = $temp / strlen($this->wm_text);
+			}
+			else
+			{
+				$fontwidth = $this->wm_font_size - ($this->wm_font_size / 4);
+			}
+
+			$fontheight = $this->wm_font_size;
+			$this->wm_vrt_offset += $this->wm_font_size;
+		}
+		else
+		{
+			$fontwidth  = imagefontwidth($this->wm_font_size);
+			$fontheight = imagefontheight($this->wm_font_size);
+		}
+
+		// Set base X and Y axis values
+		$x_axis = $this->wm_hor_offset + $this->wm_padding;
+		$y_axis = $this->wm_vrt_offset + $this->wm_padding;
+
+		if ($this->wm_use_drop_shadow === FALSE)
+		{
+			$this->wm_shadow_distance = 0;
+		}
+
+		$this->wm_vrt_alignment = strtoupper($this->wm_vrt_alignment[0]);
+		$this->wm_hor_alignment = strtoupper($this->wm_hor_alignment[0]);
+
+		// Set vertical alignment
+		if ($this->wm_vrt_alignment === 'M')
+		{
+			$y_axis += ($this->orig_height / 2) + ($fontheight / 2);
+		}
+		elseif ($this->wm_vrt_alignment === 'B')
+		{
+			$y_axis += $this->orig_height - $fontheight - $this->wm_shadow_distance - ($fontheight / 2);
+		}
+
+		// Set horizontal alignment
+		if ($this->wm_hor_alignment === 'R')
+		{
+			$x_axis += $this->orig_width - ($fontwidth * strlen($this->wm_text)) - $this->wm_shadow_distance;
+		}
+		elseif ($this->wm_hor_alignment === 'C')
+		{
+			$x_axis += floor(($this->orig_width - ($fontwidth * strlen($this->wm_text))) / 2);
+		}
+
+		if ($this->wm_use_drop_shadow)
+		{
+			// Offset from text
+			$x_shad = $x_axis + $this->wm_shadow_distance;
+			$y_shad = $y_axis + $this->wm_shadow_distance;
+
+			/* Set RGB values for shadow
+			 *
+			 * First character is #, so we don't really need it.
+			 * Get the rest of the string and split it into 2-length
+			 * hex values:
+			 */
+			$drp_color = str_split(substr($this->wm_shadow_color, 1, 6), 2);
+			$drp_color = imagecolorclosest($src_img, hexdec($drp_color[0]), hexdec($drp_color[1]), hexdec($drp_color[2]));
+
+			// Add the shadow to the source image
+			if ($this->wm_use_truetype)
+			{
+				imagettftext($src_img, $this->wm_font_size, 0, $x_shad, $y_shad, $drp_color, $this->wm_font_path, $this->wm_text);
+			}
+			else
+			{
+				imagestring($src_img, $this->wm_font_size, $x_shad, $y_shad, $this->wm_text, $drp_color);
+			}
+		}
+
+		/* Set RGB values for text
+		 *
+		 * First character is #, so we don't really need it.
+		 * Get the rest of the string and split it into 2-length
+		 * hex values:
+		 */
+		$txt_color = str_split(substr($this->wm_font_color, 1, 6), 2);
+		$txt_color = imagecolorclosest($src_img, hexdec($txt_color[0]), hexdec($txt_color[1]), hexdec($txt_color[2]));
+
+		// Add the text to the source image
+		if ($this->wm_use_truetype)
+		{
+			imagettftext($src_img, $this->wm_font_size, 0, $x_axis, $y_axis, $txt_color, $this->wm_font_path, $this->wm_text);
+		}
+		else
+		{
+			imagestring($src_img, $this->wm_font_size, $x_axis, $y_axis, $this->wm_text, $txt_color);
+		}
+
+		// We can preserve transparency for PNG images
+		if ($this->image_type === 3)
+		{
+			imagealphablending($src_img, FALSE);
+			imagesavealpha($src_img, TRUE);
+		}
+
+		// Output the final image
+		if ($this->dynamic_output === TRUE)
+		{
+			$this->image_display_gd($src_img);
+		}
+		else
+		{
+			$this->image_save_gd($src_img);
+		}
+
+		imagedestroy($src_img);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Image - GD
+	 *
+	 * This simply creates an image resource handle
+	 * based on the type of image being processed
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	resource
+	 */
+	public function image_create_gd($path = '', $image_type = '')
+	{
+		if ($path === '')
+		{
+			$path = $this->full_src_path;
+		}
+
+		if ($image_type === '')
+		{
+			$image_type = $this->image_type;
+		}
+
+		switch ($image_type)
+		{
+			case 1:
+				if ( ! function_exists('imagecreatefromgif'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_gif_not_supported'));
+					return FALSE;
+				}
+
+				return imagecreatefromgif($path);
+			case 2:
+				if ( ! function_exists('imagecreatefromjpeg'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_jpg_not_supported'));
+					return FALSE;
+				}
+
+				return imagecreatefromjpeg($path);
+			case 3:
+				if ( ! function_exists('imagecreatefrompng'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_png_not_supported'));
+					return FALSE;
+				}
+
+				return imagecreatefrompng($path);
+			case 18:
+				if ( ! function_exists('imagecreatefromwebp'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_webp_not_supported'));
+					return FALSE;
+				}
+
+				return imagecreatefromwebp($path);
+			default:
+				$this->set_error(array('imglib_unsupported_imagecreate'));
+				return FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Write image file to disk - GD
+	 *
+	 * Takes an image resource as input and writes the file
+	 * to the specified destination
+	 *
+	 * @param	resource
+	 * @return	bool
+	 */
+	public function image_save_gd($resource)
+	{
+		switch ($this->image_type)
+		{
+			case 1:
+				if ( ! function_exists('imagegif'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_gif_not_supported'));
+					return FALSE;
+				}
+
+				if ( ! @imagegif($resource, $this->full_dst_path))
+				{
+					$this->set_error('imglib_save_failed');
+					return FALSE;
+				}
+			break;
+			case 2:
+				if ( ! function_exists('imagejpeg'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_jpg_not_supported'));
+					return FALSE;
+				}
+
+				if ( ! @imagejpeg($resource, $this->full_dst_path, $this->quality))
+				{
+					$this->set_error('imglib_save_failed');
+					return FALSE;
+				}
+			break;
+			case 3:
+				if ( ! function_exists('imagepng'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_png_not_supported'));
+					return FALSE;
+				}
+
+				if ( ! @imagepng($resource, $this->full_dst_path))
+				{
+					$this->set_error('imglib_save_failed');
+					return FALSE;
+				}
+			break;
+			case 18:
+				if ( ! function_exists('imagewebp'))
+				{
+					$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_webp_not_supported'));
+					return FALSE;
+				}
+
+				if ( ! @imagewebp($resource, $this->full_dst_path))
+				{
+					$this->set_error('imglib_save_failed');
+					return FALSE;
+				}
+			break;
+			default:
+				$this->set_error(array('imglib_unsupported_imagecreate'));
+				return FALSE;
+			break;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Dynamically outputs an image
+	 *
+	 * @param	resource
+	 * @return	void
+	 */
+	public function image_display_gd($resource)
+	{
+		// RFC 6266 allows for multibyte filenames, but only in UTF-8,
+		// so we have to make it conditional ...
+		$filename = basename(empty($this->new_image) ? $this->source_image : $this->new_image);
+		$charset = strtoupper(config_item('charset'));
+		$utf8_filename = ($charset !== 'UTF-8')
+			? get_instance()->utf8->convert_to_utf8($filename, $charset)
+			: $filename;
+		isset($utf8_filename[0]) && $utf8_filename = " filename*=UTF-8''".rawurlencode($utf8_filename);
+
+		header('Content-Disposition: filename="'.$filename.'";'.$utf8_filename);
+		header('Content-Type: '.$this->mime_type);
+		header('Content-Transfer-Encoding: binary');
+		header('Last-Modified: '.gmdate('D, d M Y H:i:s', time()).' GMT');
+
+		switch ($this->image_type)
+		{
+			case 1	:	imagegif($resource);
+				break;
+			case 2	:	imagejpeg($resource, NULL, $this->quality);
+				break;
+			case 3	:	imagepng($resource);
+				break;
+			case 18	:	imagewebp($resource);
+				break;
+			default:	echo 'Unable to display the image';
+				break;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Re-proportion Image Width/Height
+	 *
+	 * When creating thumbs, the desired width/height
+	 * can end up warping the image due to an incorrect
+	 * ratio between the full-sized image and the thumb.
+	 *
+	 * This function lets us re-proportion the width/height
+	 * if users choose to maintain the aspect ratio when resizing.
+	 *
+	 * @return	void
+	 */
+	public function image_reproportion()
+	{
+		if (($this->width === 0 && $this->height === 0) OR $this->orig_width === 0 OR $this->orig_height === 0
+			OR ( ! ctype_digit((string) $this->width) && ! ctype_digit((string) $this->height))
+			OR ! ctype_digit((string) $this->orig_width) OR ! ctype_digit((string) $this->orig_height))
+		{
+			return;
+		}
+
+		// Sanitize
+		$this->width = (int) $this->width;
+		$this->height = (int) $this->height;
+
+		if ($this->master_dim !== 'width' && $this->master_dim !== 'height')
+		{
+			if ($this->width > 0 && $this->height > 0)
+			{
+				$this->master_dim = ((($this->orig_height/$this->orig_width) - ($this->height/$this->width)) < 0)
+							? 'width' : 'height';
+			}
+			else
+			{
+				$this->master_dim = ($this->height === 0) ? 'width' : 'height';
+			}
+		}
+		elseif (($this->master_dim === 'width' && $this->width === 0)
+			OR ($this->master_dim === 'height' && $this->height === 0))
+		{
+			return;
+		}
+
+		if ($this->master_dim === 'width')
+		{
+			$this->height = (int) ceil($this->width*$this->orig_height/$this->orig_width);
+		}
+		else
+		{
+			$this->width = (int) ceil($this->orig_width*$this->height/$this->orig_height);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get image properties
+	 *
+	 * A helper function that gets info about the file
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	mixed
+	 */
+	public function get_image_properties($path = '', $return = FALSE)
+	{
+		// For now we require GD but we should
+		// find a way to determine this using IM or NetPBM
+
+		if ($path === '')
+		{
+			$path = $this->full_src_path;
+		}
+
+		if ( ! file_exists($path))
+		{
+			$this->set_error('imglib_invalid_path');
+			return FALSE;
+		}
+
+		$vals = getimagesize($path);
+		if ($vals === FALSE)
+		{
+			$this->set_error('imglib_invalid_image');
+			return FALSE;
+		}
+
+		$types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png');
+		$mime = isset($types[$vals[2]]) ? 'image/'.$types[$vals[2]] : 'image/jpg';
+
+		if ($return === TRUE)
+		{
+			return array(
+				'width'      => $vals[0],
+				'height'     => $vals[1],
+				'image_type' => $vals[2],
+				'size_str'   => $vals[3],
+				'mime_type'  => $mime
+			);
+		}
+
+		$this->orig_width  = $vals[0];
+		$this->orig_height = $vals[1];
+		$this->image_type  = $vals[2];
+		$this->size_str    = $vals[3];
+		$this->mime_type   = $mime;
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Size calculator
+	 *
+	 * This function takes a known width x height and
+	 * recalculates it to a new size. Only one
+	 * new variable needs to be known
+	 *
+	 *	$props = array(
+	 *			'width'		=> $width,
+	 *			'height'	=> $height,
+	 *			'new_width'	=> 40,
+	 *			'new_height'	=> ''
+	 *		);
+	 *
+	 * @param	array
+	 * @return	array
+	 */
+	public function size_calculator($vals)
+	{
+		if ( ! is_array($vals))
+		{
+			return;
+		}
+
+		$allowed = array('new_width', 'new_height', 'width', 'height');
+
+		foreach ($allowed as $item)
+		{
+			if (empty($vals[$item]))
+			{
+				$vals[$item] = 0;
+			}
+		}
+
+		if ($vals['width'] === 0 OR $vals['height'] === 0)
+		{
+			return $vals;
+		}
+
+		if ($vals['new_width'] === 0)
+		{
+			$vals['new_width'] = ceil($vals['width']*$vals['new_height']/$vals['height']);
+		}
+		elseif ($vals['new_height'] === 0)
+		{
+			$vals['new_height'] = ceil($vals['new_width']*$vals['height']/$vals['width']);
+		}
+
+		return $vals;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Explode source_image
+	 *
+	 * This is a helper function that extracts the extension
+	 * from the source_image.  This function lets us deal with
+	 * source_images with multiple periods, like: my.cool.jpg
+	 * It returns an associative array with two elements:
+	 * $array['ext']  = '.jpg';
+	 * $array['name'] = 'my.cool';
+	 *
+	 * @param	array
+	 * @return	array
+	 */
+	public function explode_name($source_image)
+	{
+		$ext = strrchr($source_image, '.');
+		$name = ($ext === FALSE) ? $source_image : substr($source_image, 0, -strlen($ext));
+
+		return array('ext' => $ext, 'name' => $name);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is GD Installed?
+	 *
+	 * @return	bool
+	 */
+	public function gd_loaded()
+	{
+		if ( ! extension_loaded('gd'))
+		{
+			/* As it is stated in the PHP manual, dl() is not always available
+			 * and even if so - it could generate an E_WARNING message on failure
+			 */
+			return (function_exists('dl') && @dl('gd.so'));
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get GD version
+	 *
+	 * @return	mixed
+	 */
+	public function gd_version()
+	{
+		if (function_exists('gd_info'))
+		{
+			$gd_version = @gd_info();
+			return preg_replace('/\D/', '', $gd_version['GD Version']);
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set error message
+	 *
+	 * @param	string
+	 * @return	void
+	 */
+	public function set_error($msg)
+	{
+		$CI =& get_instance();
+		$CI->lang->load('imglib');
+
+		if (is_array($msg))
+		{
+			foreach ($msg as $val)
+			{
+				$msg = ($CI->lang->line($val) === FALSE) ? $val : $CI->lang->line($val);
+				$this->error_msg[] = $msg;
+				log_message('error', $msg);
+			}
+		}
+		else
+		{
+			$msg = ($CI->lang->line($msg) === FALSE) ? $msg : $CI->lang->line($msg);
+			$this->error_msg[] = $msg;
+			log_message('error', $msg);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show error messages
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	public function display_errors($open = '<p>', $close = '</p>')
+	{
+		return (count($this->error_msg) > 0) ? $open.implode($close.$open, $this->error_msg).$close : '';
+	}
+
+}
diff --git a/system/libraries/Migration.php b/system/libraries/Migration.php
new file mode 100644
index 00000000..915d4e45
--- /dev/null
+++ b/system/libraries/Migration.php
@@ -0,0 +1,477 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Migration Class
+ *
+ * All migrations should implement this, forces up() and down() and gives
+ * access to the CI super-global.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		Reactor Engineers
+ * @link
+ */
+class CI_Migration {
+
+	/**
+	 * Whether the library is enabled
+	 *
+	 * @var bool
+	 */
+	protected $_migration_enabled = FALSE;
+
+	/**
+	 * Migration numbering type
+	 *
+	 * @var	bool
+	 */
+	protected $_migration_type = 'sequential';
+
+	/**
+	 * Path to migration classes
+	 *
+	 * @var string
+	 */
+	protected $_migration_path = NULL;
+
+	/**
+	 * Current migration version
+	 *
+	 * @var mixed
+	 */
+	protected $_migration_version = 0;
+
+	/**
+	 * Database table with migration info
+	 *
+	 * @var string
+	 */
+	protected $_migration_table = 'migrations';
+
+	/**
+	 * Whether to automatically run migrations
+	 *
+	 * @var	bool
+	 */
+	protected $_migration_auto_latest = FALSE;
+
+	/**
+	 * Migration basename regex
+	 *
+	 * @var string
+	 */
+	protected $_migration_regex;
+
+	/**
+	 * Error message
+	 *
+	 * @var string
+	 */
+	protected $_error_string = '';
+
+	/**
+	 * Initialize Migration Class
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		// Only run this constructor on main library load
+		if ( ! in_array(get_class($this), array('CI_Migration', config_item('subclass_prefix').'Migration'), TRUE))
+		{
+			return;
+		}
+
+		foreach ($config as $key => $val)
+		{
+			$this->{'_'.$key} = $val;
+		}
+
+		log_message('info', 'Migrations Class Initialized');
+
+		// Are they trying to use migrations while it is disabled?
+		if ($this->_migration_enabled !== TRUE)
+		{
+			show_error('Migrations has been loaded but is disabled or set up incorrectly.');
+		}
+
+		// If not set, set it
+		$this->_migration_path !== '' OR $this->_migration_path = APPPATH.'migrations/';
+
+		// Add trailing slash if not set
+		$this->_migration_path = rtrim($this->_migration_path, '/').'/';
+
+		// Load migration language
+		$this->lang->load('migration');
+
+		// They'll probably be using dbforge
+		$this->load->dbforge();
+
+		// Make sure the migration table name was set.
+		if (empty($this->_migration_table))
+		{
+			show_error('Migrations configuration file (migration.php) must have "migration_table" set.');
+		}
+
+		// Migration basename regex
+		$this->_migration_regex = ($this->_migration_type === 'timestamp')
+			? '/^\d{14}_(\w+)$/'
+			: '/^\d{3}_(\w+)$/';
+
+		// Make sure a valid migration numbering type was set.
+		if ( ! in_array($this->_migration_type, array('sequential', 'timestamp')))
+		{
+			show_error('An invalid migration numbering type was specified: '.$this->_migration_type);
+		}
+
+		// If the migrations table is missing, make it
+		if ( ! $this->db->table_exists($this->_migration_table))
+		{
+			$this->dbforge->add_field(array(
+				'version' => array('type' => 'BIGINT', 'constraint' => 20),
+			));
+
+			$this->dbforge->create_table($this->_migration_table, TRUE);
+
+			$this->db->insert($this->_migration_table, array('version' => 0));
+		}
+
+		// Do we auto migrate to the latest migration?
+		if ($this->_migration_auto_latest === TRUE && ! $this->latest())
+		{
+			show_error($this->error_string());
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Migrate to a schema version
+	 *
+	 * Calls each migration step required to get to the schema version of
+	 * choice
+	 *
+	 * @param	string	$target_version	Target schema version
+	 * @return	mixed	TRUE if no migrations are found, current version string on success, FALSE on failure
+	 */
+	public function version($target_version)
+	{
+		// Note: We use strings, so that timestamp versions work on 32-bit systems
+		$current_version = $this->_get_version();
+
+		if ($this->_migration_type === 'sequential')
+		{
+			$target_version = sprintf('%03d', $target_version);
+		}
+		else
+		{
+			$target_version = (string) $target_version;
+		}
+
+		$migrations = $this->find_migrations();
+
+		if ($target_version > 0 && ! isset($migrations[$target_version]))
+		{
+			$this->_error_string = sprintf($this->lang->line('migration_not_found'), $target_version);
+			return FALSE;
+		}
+
+		if ($target_version > $current_version)
+		{
+			$method = 'up';
+		}
+		elseif ($target_version < $current_version)
+		{
+			$method = 'down';
+			// We need this so that migrations are applied in reverse order
+			krsort($migrations);
+		}
+		else
+		{
+			// Well, there's nothing to migrate then ...
+			return TRUE;
+		}
+
+		// Validate all available migrations within our target range.
+		//
+		// Unfortunately, we'll have to use another loop to run them
+		// in order to avoid leaving the procedure in a broken state.
+		//
+		// See https://github.com/bcit-ci/CodeIgniter/issues/4539
+		$pending = array();
+		foreach ($migrations as $number => $file)
+		{
+			// Ignore versions out of our range.
+			//
+			// Because we've previously sorted the $migrations array depending on the direction,
+			// we can safely break the loop once we reach $target_version ...
+			if ($method === 'up')
+			{
+				if ($number <= $current_version)
+				{
+					continue;
+				}
+				elseif ($number > $target_version)
+				{
+					break;
+				}
+			}
+			else
+			{
+				if ($number > $current_version)
+				{
+					continue;
+				}
+				elseif ($number <= $target_version)
+				{
+					break;
+				}
+			}
+
+			// Check for sequence gaps
+			if ($this->_migration_type === 'sequential')
+			{
+				if (isset($previous) && abs($number - $previous) > 1)
+				{
+					$this->_error_string = sprintf($this->lang->line('migration_sequence_gap'), $number);
+					return FALSE;
+				}
+
+				$previous = $number;
+			}
+
+			include_once($file);
+			$class = 'Migration_'.ucfirst(strtolower($this->_get_migration_name(basename($file, '.php'))));
+
+			// Validate the migration file structure
+			if ( ! class_exists($class, FALSE))
+			{
+				$this->_error_string = sprintf($this->lang->line('migration_class_doesnt_exist'), $class);
+				return FALSE;
+			}
+			elseif ( ! method_exists($class, $method) OR ! (new ReflectionMethod($class, $method))->isPublic())
+			{
+				$this->_error_string = sprintf($this->lang->line('migration_missing_'.$method.'_method'), $class);
+				return FALSE;
+			}
+
+			$pending[$number] = array($class, $method);
+		}
+
+		// Now just run the necessary migrations
+		foreach ($pending as $number => $migration)
+		{
+			log_message('debug', 'Migrating '.$method.' from version '.$current_version.' to version '.$number);
+
+			$migration[0] = new $migration[0];
+			call_user_func($migration);
+			$current_version = $number;
+			$this->_update_version($current_version);
+		}
+
+		// This is necessary when moving down, since the the last migration applied
+		// will be the down() method for the next migration up from the target
+		if ($current_version <> $target_version)
+		{
+			$current_version = $target_version;
+			$this->_update_version($current_version);
+		}
+
+		log_message('debug', 'Finished migrating to '.$current_version);
+		return $current_version;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sets the schema to the latest migration
+	 *
+	 * @return	mixed	Current version string on success, FALSE on failure
+	 */
+	public function latest()
+	{
+		$migrations = $this->find_migrations();
+
+		if (empty($migrations))
+		{
+			$this->_error_string = $this->lang->line('migration_none_found');
+			return FALSE;
+		}
+
+		$last_migration = basename(end($migrations));
+
+		// Calculate the last migration step from existing migration
+		// filenames and proceed to the standard version migration
+		return $this->version($this->_get_migration_number($last_migration));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sets the schema to the migration version set in config
+	 *
+	 * @return	mixed	TRUE if no migrations are found, current version string on success, FALSE on failure
+	 */
+	public function current()
+	{
+		return $this->version($this->_migration_version);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error string
+	 *
+	 * @return	string	Error message returned as a string
+	 */
+	public function error_string()
+	{
+		return $this->_error_string;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Retrieves list of available migration scripts
+	 *
+	 * @return	array	list of migration file paths sorted by version
+	 */
+	public function find_migrations()
+	{
+		$migrations = array();
+
+		// Load all *_*.php files in the migrations path
+		foreach (glob($this->_migration_path.'*_*.php') as $file)
+		{
+			$name = basename($file, '.php');
+
+			// Filter out non-migration files
+			if (preg_match($this->_migration_regex, $name))
+			{
+				$number = $this->_get_migration_number($name);
+
+				// There cannot be duplicate migration numbers
+				if (isset($migrations[$number]))
+				{
+					$this->_error_string = sprintf($this->lang->line('migration_multiple_version'), $number);
+					show_error($this->_error_string);
+				}
+
+				$migrations[$number] = $file;
+			}
+		}
+
+		ksort($migrations);
+		return $migrations;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Extracts the migration number from a filename
+	 *
+	 * @param	string	$migration
+	 * @return	string	Numeric portion of a migration filename
+	 */
+	protected function _get_migration_number($migration)
+	{
+		return sscanf($migration, '%[0-9]+', $number)
+			? $number : '0';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Extracts the migration class name from a filename
+	 *
+	 * @param	string	$migration
+	 * @return	string	text portion of a migration filename
+	 */
+	protected function _get_migration_name($migration)
+	{
+		$parts = explode('_', $migration);
+		array_shift($parts);
+		return implode('_', $parts);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Retrieves current schema version
+	 *
+	 * @return	string	Current migration version
+	 */
+	protected function _get_version()
+	{
+		$row = $this->db->select('version')->get($this->_migration_table)->row();
+		return $row ? $row->version : '0';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Stores the current schema version
+	 *
+	 * @param	string	$migration	Migration reached
+	 * @return	void
+	 */
+	protected function _update_version($migration)
+	{
+		$this->db->update($this->_migration_table, array(
+			'version' => $migration
+		));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Enable the use of CI super-global
+	 *
+	 * @param	string	$var
+	 * @return	mixed
+	 */
+	public function __get($var)
+	{
+		return get_instance()->$var;
+	}
+
+}
diff --git a/system/libraries/Pagination.php b/system/libraries/Pagination.php
new file mode 100644
index 00000000..20418c00
--- /dev/null
+++ b/system/libraries/Pagination.php
@@ -0,0 +1,704 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Pagination Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Pagination
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/pagination.html
+ */
+class CI_Pagination {
+
+	/**
+	 * Base URL
+	 *
+	 * The page that we're linking to
+	 *
+	 * @var	string
+	 */
+	protected $base_url		= '';
+
+	/**
+	 * Prefix
+	 *
+	 * @var	string
+	 */
+	protected $prefix = '';
+
+	/**
+	 * Suffix
+	 *
+	 * @var	string
+	 */
+	protected $suffix = '';
+
+	/**
+	 * Total number of items
+	 *
+	 * @var	int
+	 */
+	protected $total_rows = 0;
+
+	/**
+	 * Number of links to show
+	 *
+	 * Relates to "digit" type links shown before/after
+	 * the currently viewed page.
+	 *
+	 * @var	int
+	 */
+	protected $num_links = 2;
+
+	/**
+	 * Items per page
+	 *
+	 * @var	int
+	 */
+	public $per_page = 10;
+
+	/**
+	 * Current page
+	 *
+	 * @var	int
+	 */
+	public $cur_page = 0;
+
+	/**
+	 * Use page numbers flag
+	 *
+	 * Whether to use actual page numbers instead of an offset
+	 *
+	 * @var	bool
+	 */
+	protected $use_page_numbers = FALSE;
+
+	/**
+	 * First link
+	 *
+	 * @var	string
+	 */
+	protected $first_link = '&lsaquo; First';
+
+	/**
+	 * Next link
+	 *
+	 * @var	string
+	 */
+	protected $next_link = '&gt;';
+
+	/**
+	 * Previous link
+	 *
+	 * @var	string
+	 */
+	protected $prev_link = '&lt;';
+
+	/**
+	 * Last link
+	 *
+	 * @var	string
+	 */
+	protected $last_link = 'Last &rsaquo;';
+
+	/**
+	 * URI Segment
+	 *
+	 * @var	int
+	 */
+	protected $uri_segment = 0;
+
+	/**
+	 * Full tag open
+	 *
+	 * @var	string
+	 */
+	protected $full_tag_open = '';
+
+	/**
+	 * Full tag close
+	 *
+	 * @var	string
+	 */
+	protected $full_tag_close = '';
+
+	/**
+	 * First tag open
+	 *
+	 * @var	string
+	 */
+	protected $first_tag_open = '';
+
+	/**
+	 * First tag close
+	 *
+	 * @var	string
+	 */
+	protected $first_tag_close = '';
+
+	/**
+	 * Last tag open
+	 *
+	 * @var	string
+	 */
+	protected $last_tag_open = '';
+
+	/**
+	 * Last tag close
+	 *
+	 * @var	string
+	 */
+	protected $last_tag_close = '';
+
+	/**
+	 * First URL
+	 *
+	 * An alternative URL for the first page
+	 *
+	 * @var	string
+	 */
+	protected $first_url = '';
+
+	/**
+	 * Current tag open
+	 *
+	 * @var	string
+	 */
+	protected $cur_tag_open = '<strong>';
+
+	/**
+	 * Current tag close
+	 *
+	 * @var	string
+	 */
+	protected $cur_tag_close = '</strong>';
+
+	/**
+	 * Next tag open
+	 *
+	 * @var	string
+	 */
+	protected $next_tag_open = '';
+
+	/**
+	 * Next tag close
+	 *
+	 * @var	string
+	 */
+	protected $next_tag_close = '';
+
+	/**
+	 * Previous tag open
+	 *
+	 * @var	string
+	 */
+	protected $prev_tag_open = '';
+
+	/**
+	 * Previous tag close
+	 *
+	 * @var	string
+	 */
+	protected $prev_tag_close = '';
+
+	/**
+	 * Number tag open
+	 *
+	 * @var	string
+	 */
+	protected $num_tag_open = '';
+
+	/**
+	 * Number tag close
+	 *
+	 * @var	string
+	 */
+	protected $num_tag_close = '';
+
+	/**
+	 * Page query string flag
+	 *
+	 * @var	bool
+	 */
+	protected $page_query_string = FALSE;
+
+	/**
+	 * Query string segment
+	 *
+	 * @var	string
+	 */
+	protected $query_string_segment = 'per_page';
+
+	/**
+	 * Display pages flag
+	 *
+	 * @var	bool
+	 */
+	protected $display_pages = TRUE;
+
+	/**
+	 * Attributes
+	 *
+	 * @var	string
+	 */
+	protected $_attributes = '';
+
+	/**
+	 * Link types
+	 *
+	 * "rel" attribute
+	 *
+	 * @see	CI_Pagination::_attr_rel()
+	 * @var	array
+	 */
+	protected $_link_types = array();
+
+	/**
+	 * Reuse query string flag
+	 *
+	 * @var	bool
+	 */
+	protected $reuse_query_string = FALSE;
+
+	/**
+	 * Use global URL suffix flag
+	 *
+	 * @var	bool
+	 */
+	protected $use_global_url_suffix = FALSE;
+
+	/**
+	 * Data page attribute
+	 *
+	 * @var	string
+	 */
+	protected $data_page_attr = 'data-ci-pagination-page';
+
+	/**
+	 * CI Singleton
+	 *
+	 * @var	object
+	 */
+	protected $CI;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	array	$params	Initialization parameters
+	 * @return	void
+	 */
+	public function __construct($params = array())
+	{
+		$this->CI =& get_instance();
+		$this->CI->load->language('pagination');
+		foreach (array('first_link', 'next_link', 'prev_link', 'last_link') as $key)
+		{
+			if (($val = $this->CI->lang->line('pagination_'.$key)) !== FALSE)
+			{
+				$this->$key = $val;
+			}
+		}
+
+		// _parse_attributes(), called by initialize(), needs to run at least once
+		// in order to enable "rel" attributes, and this triggers it.
+		isset($params['attributes']) OR $params['attributes'] = array();
+
+		$this->initialize($params);
+		log_message('info', 'Pagination Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize Preferences
+	 *
+	 * @param	array	$params	Initialization parameters
+	 * @return	CI_Pagination
+	 */
+	public function initialize(array $params = array())
+	{
+		if (isset($params['attributes']) && is_array($params['attributes']))
+		{
+			$this->_parse_attributes($params['attributes']);
+			unset($params['attributes']);
+		}
+
+		// Deprecated legacy support for the anchor_class option
+		// Should be removed in CI 3.1+
+		if (isset($params['anchor_class']))
+		{
+			empty($params['anchor_class']) OR $attributes['class'] = $params['anchor_class'];
+			unset($params['anchor_class']);
+		}
+
+		foreach ($params as $key => $val)
+		{
+			if (property_exists($this, $key))
+			{
+				$this->$key = $val;
+			}
+		}
+
+		if ($this->CI->config->item('enable_query_strings') === TRUE)
+		{
+			$this->page_query_string = TRUE;
+		}
+
+		if ($this->use_global_url_suffix === TRUE)
+		{
+			$this->suffix = $this->CI->config->item('url_suffix');
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate the pagination links
+	 *
+	 * @return	string
+	 */
+	public function create_links()
+	{
+		// If our item count or per-page total is zero there is no need to continue.
+		// Note: DO NOT change the operator to === here!
+		if ($this->total_rows == 0 OR $this->per_page == 0)
+		{
+			return '';
+		}
+
+		// Calculate the total number of pages
+		$num_pages = (int) ceil($this->total_rows / $this->per_page);
+
+		// Is there only one page? Hm... nothing more to do here then.
+		if ($num_pages === 1)
+		{
+			return '';
+		}
+
+		// Check the user defined number of links.
+		$this->num_links = (int) $this->num_links;
+
+		if ($this->num_links < 0)
+		{
+			show_error('Your number of links must be a non-negative number.');
+		}
+
+		// Keep any existing query string items.
+		// Note: Has nothing to do with any other query string option.
+		if ($this->reuse_query_string === TRUE)
+		{
+			$get = $this->CI->input->get();
+
+			// Unset the control, method, old-school routing options
+			unset($get['c'], $get['m'], $get[$this->query_string_segment]);
+		}
+		else
+		{
+			$get = array();
+		}
+
+		// Put together our base and first URLs.
+		// Note: DO NOT append to the properties as that would break successive calls
+		$base_url = trim($this->base_url);
+		$first_url = $this->first_url;
+
+		$query_string = '';
+		$query_string_sep = (strpos($base_url, '?') === FALSE) ? '?' : '&amp;';
+
+		// Are we using query strings?
+		if ($this->page_query_string === TRUE)
+		{
+			// If a custom first_url hasn't been specified, we'll create one from
+			// the base_url, but without the page item.
+			if ($first_url === '')
+			{
+				$first_url = $base_url;
+
+				// If we saved any GET items earlier, make sure they're appended.
+				if ( ! empty($get))
+				{
+					$first_url .= $query_string_sep.http_build_query($get);
+				}
+			}
+
+			// Add the page segment to the end of the query string, where the
+			// page number will be appended.
+			$base_url .= $query_string_sep.http_build_query(array_merge($get, array($this->query_string_segment => '')));
+		}
+		else
+		{
+			// Standard segment mode.
+			// Generate our saved query string to append later after the page number.
+			if ( ! empty($get))
+			{
+				$query_string = $query_string_sep.http_build_query($get);
+				$this->suffix .= $query_string;
+			}
+
+			// Does the base_url have the query string in it?
+			// If we're supposed to save it, remove it so we can append it later.
+			if ($this->reuse_query_string === TRUE && ($base_query_pos = strpos($base_url, '?')) !== FALSE)
+			{
+				$base_url = substr($base_url, 0, $base_query_pos);
+			}
+
+			if ($first_url === '')
+			{
+				$first_url = $base_url.$query_string;
+			}
+
+			$base_url = rtrim($base_url, '/').'/';
+		}
+
+		// Determine the current page number.
+		$base_page = ($this->use_page_numbers) ? 1 : 0;
+
+		// Are we using query strings?
+		if ($this->page_query_string === TRUE)
+		{
+			$this->cur_page = $this->CI->input->get($this->query_string_segment);
+		}
+		elseif (empty($this->cur_page))
+		{
+			// Default to the last segment number if one hasn't been defined.
+			if ($this->uri_segment === 0)
+			{
+				$this->uri_segment = count($this->CI->uri->segment_array());
+			}
+
+			$this->cur_page = $this->CI->uri->segment($this->uri_segment);
+
+			// Remove any specified prefix/suffix from the segment.
+			if ($this->prefix !== '' OR $this->suffix !== '')
+			{
+				$this->cur_page = str_replace(array($this->prefix, $this->suffix), '', $this->cur_page);
+			}
+		}
+		else
+		{
+			$this->cur_page = (string) $this->cur_page;
+		}
+
+		// If something isn't quite right, back to the default base page.
+		if ( ! ctype_digit($this->cur_page) OR ($this->use_page_numbers && (int) $this->cur_page === 0))
+		{
+			$this->cur_page = $base_page;
+		}
+		else
+		{
+			// Make sure we're using integers for comparisons later.
+			$this->cur_page = (int) $this->cur_page;
+		}
+
+		// Is the page number beyond the result range?
+		// If so, we show the last page.
+		if ($this->use_page_numbers)
+		{
+			if ($this->cur_page > $num_pages)
+			{
+				$this->cur_page = $num_pages;
+			}
+		}
+		elseif ($this->cur_page > $this->total_rows)
+		{
+			$this->cur_page = ($num_pages - 1) * $this->per_page;
+		}
+
+		$uri_page_number = $this->cur_page;
+
+		// If we're using offset instead of page numbers, convert it
+		// to a page number, so we can generate the surrounding number links.
+		if ( ! $this->use_page_numbers)
+		{
+			$this->cur_page = (int) floor(($this->cur_page/$this->per_page) + 1);
+		}
+
+		// Calculate the start and end numbers. These determine
+		// which number to start and end the digit links with.
+		$start	= (($this->cur_page - $this->num_links) > 0) ? $this->cur_page - ($this->num_links - 1) : 1;
+		$end	= (($this->cur_page + $this->num_links) < $num_pages) ? $this->cur_page + $this->num_links : $num_pages;
+
+		// And here we go...
+		$output = '';
+
+		// Render the "First" link.
+		if ($this->first_link !== FALSE && $this->cur_page > ($this->num_links + 1 + ! $this->num_links))
+		{
+			// Take the general parameters, and squeeze this pagination-page attr in for JS frameworks.
+			$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, 1);
+
+			$output .= $this->first_tag_open.'<a href="'.$first_url.'"'.$attributes.$this->_attr_rel('start').'>'
+				.$this->first_link.'</a>'.$this->first_tag_close;
+		}
+
+		// Render the "Previous" link.
+		if ($this->prev_link !== FALSE && $this->cur_page !== 1)
+		{
+			$i = ($this->use_page_numbers) ? $uri_page_number - 1 : $uri_page_number - $this->per_page;
+
+			$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, ($this->cur_page - 1));
+
+			if ($i === $base_page)
+			{
+				// First page
+				$output .= $this->prev_tag_open.'<a href="'.$first_url.'"'.$attributes.$this->_attr_rel('prev').'>'
+					.$this->prev_link.'</a>'.$this->prev_tag_close;
+			}
+			else
+			{
+				$append = $this->prefix.$i.$this->suffix;
+				$output .= $this->prev_tag_open.'<a href="'.$base_url.$append.'"'.$attributes.$this->_attr_rel('prev').'>'
+					.$this->prev_link.'</a>'.$this->prev_tag_close;
+			}
+
+		}
+
+		// Render the pages
+		if ($this->display_pages !== FALSE)
+		{
+			// Write the digit links
+			for ($loop = $start - 1; $loop <= $end; $loop++)
+			{
+				$i = ($this->use_page_numbers) ? $loop : ($loop * $this->per_page) - $this->per_page;
+
+				$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, $loop);
+
+				if ($i >= $base_page)
+				{
+					if ($this->cur_page === $loop)
+					{
+						// Current page
+						$output .= $this->cur_tag_open.$loop.$this->cur_tag_close;
+					}
+					elseif ($i === $base_page)
+					{
+						// First page
+						$output .= $this->num_tag_open.'<a href="'.$first_url.'"'.$attributes.$this->_attr_rel('start').'>'
+							.$loop.'</a>'.$this->num_tag_close;
+					}
+					else
+					{
+						$append = $this->prefix.$i.$this->suffix;
+						$output .= $this->num_tag_open.'<a href="'.$base_url.$append.'"'.$attributes.'>'
+							.$loop.'</a>'.$this->num_tag_close;
+					}
+				}
+			}
+		}
+
+		// Render the "next" link
+		if ($this->next_link !== FALSE && $this->cur_page < $num_pages)
+		{
+			$i = ($this->use_page_numbers) ? $this->cur_page + 1 : $this->cur_page * $this->per_page;
+
+			$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, $this->cur_page + 1);
+
+			$output .= $this->next_tag_open.'<a href="'.$base_url.$this->prefix.$i.$this->suffix.'"'.$attributes
+				.$this->_attr_rel('next').'>'.$this->next_link.'</a>'.$this->next_tag_close;
+		}
+
+		// Render the "Last" link
+		if ($this->last_link !== FALSE && ($this->cur_page + $this->num_links + ! $this->num_links) < $num_pages)
+		{
+			$i = ($this->use_page_numbers) ? $num_pages : ($num_pages * $this->per_page) - $this->per_page;
+
+			$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, $num_pages);
+
+			$output .= $this->last_tag_open.'<a href="'.$base_url.$this->prefix.$i.$this->suffix.'"'.$attributes.'>'
+				.$this->last_link.'</a>'.$this->last_tag_close;
+		}
+
+		// Kill double slashes. Note: Sometimes we can end up with a double slash
+		// in the penultimate link so we'll kill all double slashes.
+		$output = preg_replace('#([^:"])//+#', '\\1/', $output);
+
+		// Add the wrapper HTML if exists
+		return $this->full_tag_open.$output.$this->full_tag_close;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse attributes
+	 *
+	 * @param	array	$attributes
+	 * @return	void
+	 */
+	protected function _parse_attributes($attributes)
+	{
+		isset($attributes['rel']) OR $attributes['rel'] = TRUE;
+		$this->_link_types = ($attributes['rel'])
+			? array('start' => 'start', 'prev' => 'prev', 'next' => 'next')
+			: array();
+		unset($attributes['rel']);
+
+		$this->_attributes = '';
+		foreach ($attributes as $key => $value)
+		{
+			$this->_attributes .= ' '.$key.'="'.$value.'"';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add "rel" attribute
+	 *
+	 * @link	https://www.w3.org/TR/html5/links.html#linkTypes
+	 * @param	string	$type
+	 * @return	string
+	 */
+	protected function _attr_rel($type)
+	{
+		if (isset($this->_link_types[$type]))
+		{
+			unset($this->_link_types[$type]);
+			return ' rel="'.$type.'"';
+		}
+
+		return '';
+	}
+
+}
diff --git a/system/libraries/Parser.php b/system/libraries/Parser.php
new file mode 100644
index 00000000..04476f1a
--- /dev/null
+++ b/system/libraries/Parser.php
@@ -0,0 +1,248 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Parser Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Parser
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/parser.html
+ */
+class CI_Parser {
+
+	/**
+	 * Left delimiter character for pseudo vars
+	 *
+	 * @var string
+	 */
+	public $l_delim = '{';
+
+	/**
+	 * Right delimiter character for pseudo vars
+	 *
+	 * @var string
+	 */
+	public $r_delim = '}';
+
+	/**
+	 * Reference to CodeIgniter instance
+	 *
+	 * @var object
+	 */
+	protected $CI;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$this->CI =& get_instance();
+		log_message('info', 'Parser Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse a template
+	 *
+	 * Parses pseudo-variables contained in the specified template view,
+	 * replacing them with the data in the second param
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	bool
+	 * @return	string
+	 */
+	public function parse($template, $data, $return = FALSE)
+	{
+		$template = $this->CI->load->view($template, $data, TRUE);
+
+		return $this->_parse($template, $data, $return);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse a String
+	 *
+	 * Parses pseudo-variables contained in the specified string,
+	 * replacing them with the data in the second param
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	bool
+	 * @return	string
+	 */
+	public function parse_string($template, $data, $return = FALSE)
+	{
+		return $this->_parse($template, $data, $return);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse a template
+	 *
+	 * Parses pseudo-variables contained in the specified template,
+	 * replacing them with the data in the second param
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	bool
+	 * @return	string
+	 */
+	protected function _parse($template, $data, $return = FALSE)
+	{
+		if ($template === '')
+		{
+			return FALSE;
+		}
+
+		$replace = array();
+		foreach ($data as $key => $val)
+		{
+			$replace = array_merge(
+				$replace,
+				is_array($val)
+					? $this->_parse_pair($key, $val, $template)
+					: $this->_parse_single($key, (string) $val, $template)
+			);
+		}
+
+		unset($data);
+		$template = strtr($template, $replace);
+
+		if ($return === FALSE)
+		{
+			$this->CI->output->append_output($template);
+		}
+
+		return $template;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the left/right variable delimiters
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	void
+	 */
+	public function set_delimiters($l = '{', $r = '}')
+	{
+		$this->l_delim = $l;
+		$this->r_delim = $r;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse a single key/value
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _parse_single($key, $val, $string)
+	{
+		return array($this->l_delim.$key.$this->r_delim => (string) $val);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse a tag pair
+	 *
+	 * Parses tag pairs: {some_tag} string... {/some_tag}
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _parse_pair($variable, $data, $string)
+	{
+		$replace = array();
+		preg_match_all(
+			'#'.preg_quote($this->l_delim.$variable.$this->r_delim).'(.+?)'.preg_quote($this->l_delim.'/'.$variable.$this->r_delim).'#s',
+			$string,
+			$matches,
+			PREG_SET_ORDER
+		);
+
+		foreach ($matches as $match)
+		{
+			$str = '';
+			foreach ($data as $row)
+			{
+				$temp = array();
+				foreach ($row as $key => $val)
+				{
+					if (is_array($val))
+					{
+						$pair = $this->_parse_pair($key, $val, $match[1]);
+						if ( ! empty($pair))
+						{
+							$temp = array_merge($temp, $pair);
+						}
+
+						continue;
+					}
+
+					$temp[$this->l_delim.$key.$this->r_delim] = $val;
+				}
+
+				$str .= strtr($match[1], $temp);
+			}
+
+			$replace[$match[0]] = $str;
+		}
+
+		return $replace;
+	}
+
+}
diff --git a/system/libraries/Profiler.php b/system/libraries/Profiler.php
new file mode 100644
index 00000000..5531f336
--- /dev/null
+++ b/system/libraries/Profiler.php
@@ -0,0 +1,574 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Profiler Class
+ *
+ * This class enables you to display benchmark, query, and other data
+ * in order to help with debugging and optimization.
+ *
+ * Note: At some point it would be good to move all the HTML in this class
+ * into a set of template files in order to allow customization.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/general/profiling.html
+ */
+class CI_Profiler {
+
+	/**
+	 * List of profiler sections available to show
+	 *
+	 * @var array
+	 */
+	protected $_available_sections = array(
+		'benchmarks',
+		'get',
+		'memory_usage',
+		'post',
+		'uri_string',
+		'controller_info',
+		'queries',
+		'http_headers',
+		'session_data',
+		'config'
+	);
+
+	/**
+	 * Number of queries to show before making the additional queries togglable
+	 *
+	 * @var int
+	 */
+	protected $_query_toggle_count = 25;
+
+	/**
+	 * Reference to the CodeIgniter singleton
+	 *
+	 * @var object
+	 */
+	protected $CI;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * Initialize Profiler
+	 *
+	 * @param	array	$config	Parameters
+	 */
+	public function __construct($config = array())
+	{
+		$this->CI =& get_instance();
+		$this->CI->load->language('profiler');
+
+		// default all sections to display
+		foreach ($this->_available_sections as $section)
+		{
+			if ( ! isset($config[$section]))
+			{
+				$this->{'_compile_'.$section} = TRUE;
+			}
+		}
+
+		$this->set_sections($config);
+		log_message('info', 'Profiler Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Sections
+	 *
+	 * Sets the private _compile_* properties to enable/disable Profiler sections
+	 *
+	 * @param	mixed	$config
+	 * @return	void
+	 */
+	public function set_sections($config)
+	{
+		if (isset($config['query_toggle_count']))
+		{
+			$this->_query_toggle_count = (int) $config['query_toggle_count'];
+			unset($config['query_toggle_count']);
+		}
+
+		foreach ($config as $method => $enable)
+		{
+			if (in_array($method, $this->_available_sections))
+			{
+				$this->{'_compile_'.$method} = ($enable !== FALSE);
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Auto Profiler
+	 *
+	 * This function cycles through the entire array of mark points and
+	 * matches any two points that are named identically (ending in "_start"
+	 * and "_end" respectively).  It then compiles the execution times for
+	 * all points and returns it as an array
+	 *
+	 * @return	array
+	 */
+	protected function _compile_benchmarks()
+	{
+		$profile = array();
+		foreach ($this->CI->benchmark->marker as $key => $val)
+		{
+			// We match the "end" marker so that the list ends
+			// up in the order that it was defined
+			if (preg_match('/(.+?)_end$/i', $key, $match)
+				&& isset($this->CI->benchmark->marker[$match[1].'_end'], $this->CI->benchmark->marker[$match[1].'_start']))
+			{
+				$profile[$match[1]] = $this->CI->benchmark->elapsed_time($match[1].'_start', $key);
+			}
+		}
+
+		// Build a table containing the profile data.
+		// Note: At some point we should turn this into a template that can
+		// be modified. We also might want to make this data available to be logged
+
+		$output = "\n\n"
+			.'<fieldset id="ci_profiler_benchmarks" style="border:1px solid #900;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#900;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_benchmarks')."&nbsp;&nbsp;</legend>"
+			."\n\n\n<table style=\"width:100%;\">\n";
+
+		foreach ($profile as $key => $val)
+		{
+			$key = ucwords(str_replace(array('_', '-'), ' ', $key));
+			$output .= '<tr><td style="padding:5px;width:50%;color:#000;font-weight:bold;background-color:#ddd;">'
+					.$key.'&nbsp;&nbsp;</td><td style="padding:5px;width:50%;color:#900;font-weight:normal;background-color:#ddd;">'
+					.$val."</td></tr>\n";
+		}
+
+		return $output."</table>\n</fieldset>";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile Queries
+	 *
+	 * @return	string
+	 */
+	protected function _compile_queries()
+	{
+		$dbs = array();
+
+		// Let's determine which databases are currently connected to
+		foreach (get_object_vars($this->CI) as $name => $cobject)
+		{
+			if (is_object($cobject))
+			{
+				if ($cobject instanceof CI_DB)
+				{
+					$dbs[get_class($this->CI).':$'.$name] = $cobject;
+				}
+				elseif ($cobject instanceof CI_Model)
+				{
+					foreach (get_object_vars($cobject) as $mname => $mobject)
+					{
+						if ($mobject instanceof CI_DB)
+						{
+							$dbs[get_class($cobject).':$'.$mname] = $mobject;
+						}
+					}
+				}
+			}
+		}
+
+		if (count($dbs) === 0)
+		{
+			return "\n\n"
+				.'<fieldset id="ci_profiler_queries" style="border:1px solid #0000FF;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+				."\n"
+				.'<legend style="color:#0000FF;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_queries').'&nbsp;&nbsp;</legend>'
+				."\n\n\n<table style=\"border:none; width:100%;\">\n"
+				.'<tr><td style="width:100%;color:#0000FF;font-weight:normal;background-color:#eee;padding:5px;">'
+				.$this->CI->lang->line('profiler_no_db')
+				."</td></tr>\n</table>\n</fieldset>";
+		}
+
+		// Load the text helper so we can highlight the SQL
+		$this->CI->load->helper('text');
+
+		// Key words we want bolded
+		$highlight = array('SELECT', 'DISTINCT', 'FROM', 'WHERE', 'AND', 'LEFT&nbsp;JOIN', 'ORDER&nbsp;BY', 'GROUP&nbsp;BY', 'LIMIT', 'INSERT', 'INTO', 'VALUES', 'UPDATE', 'OR&nbsp;', 'HAVING', 'OFFSET', 'NOT&nbsp;IN', 'IN', 'LIKE', 'NOT&nbsp;LIKE', 'COUNT', 'MAX', 'MIN', 'ON', 'AS', 'AVG', 'SUM', '(', ')');
+
+		$output  = "\n\n";
+		$count = 0;
+
+		foreach ($dbs as $name => $db)
+		{
+			$hide_queries = (count($db->queries) > $this->_query_toggle_count) ? ' display:none' : '';
+			$total_time = number_format(array_sum($db->query_times), 4).' '.$this->CI->lang->line('profiler_seconds');
+
+			$show_hide_js = '(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_queries_db_'.$count.'\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_hide').'\'?\''.$this->CI->lang->line('profiler_section_show').'\':\''.$this->CI->lang->line('profiler_section_hide').'\';">'.$this->CI->lang->line('profiler_section_hide').'</span>)';
+
+			if ($hide_queries !== '')
+			{
+				$show_hide_js = '(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_queries_db_'.$count.'\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show').'</span>)';
+			}
+
+			$output .= '<fieldset style="border:1px solid #0000FF;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+				."\n"
+				.'<legend style="color:#0000FF;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_database')
+				.':&nbsp; '.$db->database.' ('.$name.')&nbsp;&nbsp;&nbsp;'.$this->CI->lang->line('profiler_queries')
+				.': '.count($db->queries).' ('.$total_time.')&nbsp;&nbsp;'.$show_hide_js."</legend>\n\n\n"
+				.'<table style="width:100%;'.$hide_queries.'" id="ci_profiler_queries_db_'.$count."\">\n";
+
+			if (count($db->queries) === 0)
+			{
+				$output .= '<tr><td style="width:100%;color:#0000FF;font-weight:normal;background-color:#eee;padding:5px;">'
+						.$this->CI->lang->line('profiler_no_queries')."</td></tr>\n";
+			}
+			else
+			{
+				foreach ($db->queries as $key => $val)
+				{
+					$time = number_format($db->query_times[$key], 4);
+					$val = highlight_code($val);
+
+					foreach ($highlight as $bold)
+					{
+						$val = str_replace($bold, '<strong>'.$bold.'</strong>', $val);
+					}
+
+					$output .= '<tr><td style="padding:5px;vertical-align:top;width:1%;color:#900;font-weight:normal;background-color:#ddd;">'
+							.$time.'&nbsp;&nbsp;</td><td style="padding:5px;color:#000;font-weight:normal;background-color:#ddd;">'
+							.$val."</td></tr>\n";
+				}
+			}
+
+			$output .= "</table>\n</fieldset>";
+			$count++;
+		}
+
+		return $output;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile $_GET Data
+	 *
+	 * @return	string
+	 */
+	protected function _compile_get()
+	{
+		$output = "\n\n"
+			.'<fieldset id="ci_profiler_get" style="border:1px solid #cd6e00;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#cd6e00;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_get_data')."&nbsp;&nbsp;</legend>\n";
+
+		if (count($_GET) === 0)
+		{
+			$output .= '<div style="color:#cd6e00;font-weight:normal;padding:4px 0 4px 0;">'.$this->CI->lang->line('profiler_no_get').'</div>';
+		}
+		else
+		{
+			$output .= "\n\n<table style=\"width:100%;border:none;\">\n";
+
+			foreach ($_GET as $key => $val)
+			{
+				is_int($key) OR $key = "'".htmlspecialchars($key, ENT_QUOTES, config_item('charset'))."'";
+				$val = (is_array($val) OR is_object($val))
+					? '<pre>'.htmlspecialchars(print_r($val, TRUE), ENT_QUOTES, config_item('charset')).'</pre>'
+					: htmlspecialchars($val, ENT_QUOTES, config_item('charset'));
+
+				$output .= '<tr><td style="width:50%;color:#000;background-color:#ddd;padding:5px;">&#36;_GET['
+					.$key.']&nbsp;&nbsp; </td><td style="width:50%;padding:5px;color:#cd6e00;font-weight:normal;background-color:#ddd;">'
+					.$val."</td></tr>\n";
+			}
+
+			$output .= "</table>\n";
+		}
+
+		return $output.'</fieldset>';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile $_POST Data
+	 *
+	 * @return	string
+	 */
+	protected function _compile_post()
+	{
+		$output = "\n\n"
+			.'<fieldset id="ci_profiler_post" style="border:1px solid #009900;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#009900;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_post_data')."&nbsp;&nbsp;</legend>\n";
+
+		if (count($_POST) === 0 && count($_FILES) === 0)
+		{
+			$output .= '<div style="color:#009900;font-weight:normal;padding:4px 0 4px 0;">'.$this->CI->lang->line('profiler_no_post').'</div>';
+		}
+		else
+		{
+			$output .= "\n\n<table style=\"width:100%;\">\n";
+
+			foreach ($_POST as $key => $val)
+			{
+				is_int($key) OR $key = "'".htmlspecialchars($key, ENT_QUOTES, config_item('charset'))."'";
+				$val = (is_array($val) OR is_object($val))
+					? '<pre>'.htmlspecialchars(print_r($val, TRUE), ENT_QUOTES, config_item('charset')).'</pre>'
+					: htmlspecialchars($val, ENT_QUOTES, config_item('charset'));
+
+				$output .= '<tr><td style="width:50%;padding:5px;color:#000;background-color:#ddd;">&#36;_POST['
+					.$key.']&nbsp;&nbsp; </td><td style="width:50%;padding:5px;color:#009900;font-weight:normal;background-color:#ddd;">'
+					.$val."</td></tr>\n";
+			}
+
+			foreach ($_FILES as $key => $val)
+			{
+				is_int($key) OR $key = "'".htmlspecialchars($key, ENT_QUOTES, config_item('charset'))."'";
+				$val = (is_array($val) OR is_object($val))
+					? '<pre>'.htmlspecialchars(print_r($val, TRUE), ENT_QUOTES, config_item('charset')).'</pre>'
+					: htmlspecialchars($val, ENT_QUOTES, config_item('charset'));
+
+				$output .= '<tr><td style="width:50%;padding:5px;color:#000;background-color:#ddd;">&#36;_FILES['
+					.$key.']&nbsp;&nbsp; </td><td style="width:50%;padding:5px;color:#009900;font-weight:normal;background-color:#ddd;">'
+					.$val."</td></tr>\n";
+			}
+
+			$output .= "</table>\n";
+		}
+
+		return $output.'</fieldset>';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show query string
+	 *
+	 * @return	string
+	 */
+	protected function _compile_uri_string()
+	{
+		return "\n\n"
+			.'<fieldset id="ci_profiler_uri_string" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_uri_string')."&nbsp;&nbsp;</legend>\n"
+			.'<div style="color:#000;font-weight:normal;padding:4px 0 4px 0;">'
+			.($this->CI->uri->uri_string === '' ? $this->CI->lang->line('profiler_no_uri') : $this->CI->uri->uri_string)
+			.'</div></fieldset>';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show the controller and function that were called
+	 *
+	 * @return	string
+	 */
+	protected function _compile_controller_info()
+	{
+		return "\n\n"
+			.'<fieldset id="ci_profiler_controller_info" style="border:1px solid #995300;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#995300;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_controller_info')."&nbsp;&nbsp;</legend>\n"
+			.'<div style="color:#995300;font-weight:normal;padding:4px 0 4px 0;">'.$this->CI->router->class.'/'.$this->CI->router->method
+			.'</div></fieldset>';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile memory usage
+	 *
+	 * Display total used memory
+	 *
+	 * @return	string
+	 */
+	protected function _compile_memory_usage()
+	{
+		return "\n\n"
+			.'<fieldset id="ci_profiler_memory_usage" style="border:1px solid #5a0099;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#5a0099;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_memory_usage')."&nbsp;&nbsp;</legend>\n"
+			.'<div style="color:#5a0099;font-weight:normal;padding:4px 0 4px 0;">'
+			.(($usage = memory_get_usage()) != '' ? number_format($usage).' bytes' : $this->CI->lang->line('profiler_no_memory'))
+			.'</div></fieldset>';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile header information
+	 *
+	 * Lists HTTP headers
+	 *
+	 * @return	string
+	 */
+	protected function _compile_http_headers()
+	{
+		$output = "\n\n"
+			.'<fieldset id="ci_profiler_http_headers" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_headers')
+			.'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_httpheaders_table\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show')."</span>)</legend>\n\n\n"
+			.'<table style="width:100%;display:none;" id="ci_profiler_httpheaders_table">'."\n";
+
+		foreach (array('HTTP_ACCEPT', 'HTTP_USER_AGENT', 'HTTP_CONNECTION', 'SERVER_PORT', 'SERVER_NAME', 'REMOTE_ADDR', 'SERVER_SOFTWARE', 'HTTP_ACCEPT_LANGUAGE', 'SCRIPT_NAME', 'REQUEST_METHOD',' HTTP_HOST', 'REMOTE_HOST', 'CONTENT_TYPE', 'SERVER_PROTOCOL', 'QUERY_STRING', 'HTTP_ACCEPT_ENCODING', 'HTTP_X_FORWARDED_FOR', 'HTTP_DNT') as $header)
+		{
+			$val = isset($_SERVER[$header]) ? htmlspecialchars($_SERVER[$header], ENT_QUOTES, config_item('charset')) : '';
+			$output .= '<tr><td style="vertical-align:top;width:50%;padding:5px;color:#900;background-color:#ddd;">'
+				.$header.'&nbsp;&nbsp;</td><td style="width:50%;padding:5px;color:#000;background-color:#ddd;">'.$val."</td></tr>\n";
+		}
+
+		return $output."</table>\n</fieldset>";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile config information
+	 *
+	 * Lists developer config variables
+	 *
+	 * @return	string
+	 */
+	protected function _compile_config()
+	{
+		$output = "\n\n"
+			.'<fieldset id="ci_profiler_config" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			."\n"
+			.'<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_config').'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_config_table\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show')."</span>)</legend>\n\n\n"
+			.'<table style="width:100%;display:none;" id="ci_profiler_config_table">'."\n";
+
+		foreach ($this->CI->config->config as $config => $val)
+		{
+			$pre       = '';
+			$pre_close = '';
+
+			if (is_array($val) OR is_object($val))
+			{
+				$val = print_r($val, TRUE);
+
+				$pre       = '<pre>' ;
+				$pre_close = '</pre>';
+			}
+
+			$output .= '<tr><td style="padding:5px;vertical-align:top;color:#900;background-color:#ddd;">'
+				.$config.'&nbsp;&nbsp;</td><td style="padding:5px;color:#000;background-color:#ddd;">'.$pre.htmlspecialchars($val, ENT_QUOTES, config_item('charset')).$pre_close."</td></tr>\n";
+		}
+
+		return $output."</table>\n</fieldset>";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile session userdata
+	 *
+	 * @return 	string
+	 */
+	protected function _compile_session_data()
+	{
+		if ( ! isset($this->CI->session))
+		{
+			return;
+		}
+
+		$output = '<fieldset id="ci_profiler_csession" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+			.'<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_session_data').'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_session_data\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show').'</span>)</legend>'
+			.'<table style="width:100%;display:none;" id="ci_profiler_session_data">';
+
+		foreach ($this->CI->session->userdata() as $key => $val)
+		{
+			$pre       = '';
+			$pre_close = '';
+
+			if (is_array($val) OR is_object($val))
+			{
+				$val = print_r($val, TRUE);
+
+				$pre       = '<pre>' ;
+				$pre_close = '</pre>';
+			}
+
+			$output .= '<tr><td style="padding:5px;vertical-align:top;color:#900;background-color:#ddd;">'
+				.$key.'&nbsp;&nbsp;</td><td style="padding:5px;color:#000;background-color:#ddd;">'.$pre.htmlspecialchars($val, ENT_QUOTES, config_item('charset')).$pre_close."</td></tr>\n";
+		}
+
+		return $output."</table>\n</fieldset>";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Run the Profiler
+	 *
+	 * @return	string
+	 */
+	public function run()
+	{
+		$output = '<div id="codeigniter_profiler" style="clear:both;background-color:#fff;padding:10px;">';
+		$fields_displayed = 0;
+
+		foreach ($this->_available_sections as $section)
+		{
+			if ($this->{'_compile_'.$section} !== FALSE)
+			{
+				$func = '_compile_'.$section;
+				$output .= $this->{$func}();
+				$fields_displayed++;
+			}
+		}
+
+		if ($fields_displayed === 0)
+		{
+			$output .= '<p style="border:1px solid #5a0099;padding:10px;margin:20px 0;background-color:#eee;">'
+				.$this->CI->lang->line('profiler_no_profiles').'</p>';
+		}
+
+		return $output.'</div>';
+	}
+
+}
diff --git a/system/libraries/Session/Session.php b/system/libraries/Session/Session.php
new file mode 100644
index 00000000..157a1d57
--- /dev/null
+++ b/system/libraries/Session/Session.php
@@ -0,0 +1,962 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 2.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Session Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Sessions
+ * @author		Andrey Andreev
+ * @link		https://codeigniter.com/userguide3/libraries/sessions.html
+ */
+class CI_Session {
+
+	/**
+	 * Userdata array
+	 *
+	 * Just a reference to $_SESSION, for BC purposes.
+	 */
+	public $userdata;
+
+	protected $_driver = 'files';
+	protected $_config;
+	protected $_sid_regexp;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(array $params = array())
+	{
+		// No sessions under CLI
+		if (is_cli())
+		{
+			log_message('debug', 'Session: Initialization under CLI aborted.');
+			return;
+		}
+		elseif ((bool) ini_get('session.auto_start'))
+		{
+			log_message('error', 'Session: session.auto_start is enabled in php.ini. Aborting.');
+			return;
+		}
+		elseif ( ! empty($params['driver']))
+		{
+			$this->_driver = $params['driver'];
+			unset($params['driver']);
+		}
+		elseif ($driver = config_item('sess_driver'))
+		{
+			$this->_driver = $driver;
+		}
+		// Note: BC workaround
+		elseif (config_item('sess_use_database'))
+		{
+			log_message('debug', 'Session: "sess_driver" is empty; using BC fallback to "sess_use_database".');
+			$this->_driver = 'database';
+		}
+
+		$class = $this->_ci_load_classes($this->_driver);
+
+		// Configuration ...
+		$this->_configure($params);
+		$this->_config['_sid_regexp'] = $this->_sid_regexp;
+
+		$class = new $class($this->_config);
+		if ($class instanceof SessionHandlerInterface)
+		{
+			session_set_save_handler($class, TRUE);
+		}
+		else
+		{
+			log_message('error', "Session: Driver '".$this->_driver."' doesn't implement SessionHandlerInterface. Aborting.");
+			return;
+		}
+
+		// Sanitize the cookie, because apparently PHP doesn't do that for userspace handlers
+		if (isset($_COOKIE[$this->_config['cookie_name']])
+			&& (
+				! is_string($_COOKIE[$this->_config['cookie_name']])
+				OR ! preg_match('#\A'.$this->_sid_regexp.'\z#', $_COOKIE[$this->_config['cookie_name']])
+			)
+		)
+		{
+			unset($_COOKIE[$this->_config['cookie_name']]);
+		}
+
+		session_start();
+
+		// Is session ID auto-regeneration configured? (ignoring ajax requests)
+		if ((empty($_SERVER['HTTP_X_REQUESTED_WITH']) OR strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) !== 'xmlhttprequest')
+			&& ($regenerate_time = config_item('sess_time_to_update')) > 0
+		)
+		{
+			if ( ! isset($_SESSION['__ci_last_regenerate']))
+			{
+				$_SESSION['__ci_last_regenerate'] = time();
+			}
+			elseif ($_SESSION['__ci_last_regenerate'] < (time() - $regenerate_time))
+			{
+				$this->sess_regenerate((bool) config_item('sess_regenerate_destroy'));
+			}
+		}
+		// Another work-around ... PHP doesn't seem to send the session cookie
+		// unless it is being currently created or regenerated
+		elseif (isset($_COOKIE[$this->_config['cookie_name']]) && $_COOKIE[$this->_config['cookie_name']] === session_id())
+		{
+			setcookie(
+				$this->_config['cookie_name'],
+				session_id(),
+				(empty($this->_config['cookie_lifetime']) ? 0 : time() + $this->_config['cookie_lifetime']),
+				$this->_config['cookie_path'],
+				$this->_config['cookie_domain'],
+				$this->_config['cookie_secure'],
+				TRUE
+			);
+		}
+
+		$this->_ci_init_vars();
+
+		log_message('info', "Session: Class initialized using '".$this->_driver."' driver.");
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * CI Load Classes
+	 *
+	 * An internal method to load all possible dependency and extension
+	 * classes. It kind of emulates the CI_Driver library, but is
+	 * self-sufficient.
+	 *
+	 * @param	string	$driver	Driver name
+	 * @return	string	Driver class name
+	 */
+	protected function _ci_load_classes($driver)
+	{
+		$prefix = config_item('subclass_prefix');
+
+		if ( ! class_exists('CI_Session_driver', FALSE))
+		{
+			require_once(
+				file_exists(APPPATH.'libraries/Session/Session_driver.php')
+					? APPPATH.'libraries/Session/Session_driver.php'
+					: BASEPATH.'libraries/Session/Session_driver.php'
+			);
+
+			if (file_exists($file_path = APPPATH.'libraries/Session/'.$prefix.'Session_driver.php'))
+			{
+				require_once($file_path);
+			}
+		}
+
+		$class = 'Session_'.$driver.'_driver';
+
+		// Allow custom drivers without the CI_ or MY_ prefix
+		if ( ! class_exists($class, FALSE) && file_exists($file_path = APPPATH.'libraries/Session/drivers/'.$class.'.php'))
+		{
+			require_once($file_path);
+			if (class_exists($class, FALSE))
+			{
+				return $class;
+			}
+		}
+
+		if ( ! class_exists('CI_'.$class, FALSE))
+		{
+			if (file_exists($file_path = APPPATH.'libraries/Session/drivers/'.$class.'.php') OR file_exists($file_path = BASEPATH.'libraries/Session/drivers/'.$class.'.php'))
+			{
+				require_once($file_path);
+			}
+
+			if ( ! class_exists('CI_'.$class, FALSE) && ! class_exists($class, FALSE))
+			{
+				throw new UnexpectedValueException("Session: Configured driver '".$driver."' was not found. Aborting.");
+			}
+		}
+
+		if ( ! class_exists($prefix.$class, FALSE) && file_exists($file_path = APPPATH.'libraries/Session/drivers/'.$prefix.$class.'.php'))
+		{
+			require_once($file_path);
+			if (class_exists($prefix.$class, FALSE))
+			{
+				return $prefix.$class;
+			}
+
+			log_message('debug', 'Session: '.$prefix.$class.".php found but it doesn't declare class ".$prefix.$class.'.');
+		}
+
+		return 'CI_'.$class;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Configuration
+	 *
+	 * Handle input parameters and configuration defaults
+	 *
+	 * @param	array	&$params	Input parameters
+	 * @return	void
+	 */
+	protected function _configure(&$params)
+	{
+		$expiration = config_item('sess_expiration');
+
+		if (isset($params['cookie_lifetime']))
+		{
+			$params['cookie_lifetime'] = (int) $params['cookie_lifetime'];
+		}
+		else
+		{
+			$params['cookie_lifetime'] = ( ! isset($expiration) && config_item('sess_expire_on_close'))
+				? 0 : (int) $expiration;
+		}
+
+		isset($params['cookie_name']) OR $params['cookie_name'] = config_item('sess_cookie_name');
+		if (empty($params['cookie_name']))
+		{
+			$params['cookie_name'] = ini_get('session.name');
+		}
+		else
+		{
+			ini_set('session.name', $params['cookie_name']);
+		}
+
+		isset($params['cookie_path']) OR $params['cookie_path'] = config_item('cookie_path');
+		isset($params['cookie_domain']) OR $params['cookie_domain'] = config_item('cookie_domain');
+		isset($params['cookie_secure']) OR $params['cookie_secure'] = (bool) config_item('cookie_secure');
+
+		session_set_cookie_params(
+			$params['cookie_lifetime'],
+			$params['cookie_path'],
+			$params['cookie_domain'],
+			$params['cookie_secure'],
+			TRUE // HttpOnly; Yes, this is intentional and not configurable for security reasons
+		);
+
+		if (empty($expiration))
+		{
+			$params['expiration'] = (int) ini_get('session.gc_maxlifetime');
+		}
+		else
+		{
+			$params['expiration'] = (int) $expiration;
+			ini_set('session.gc_maxlifetime', $expiration);
+		}
+
+		$params['match_ip'] = (bool) (isset($params['match_ip']) ? $params['match_ip'] : config_item('sess_match_ip'));
+
+		isset($params['save_path']) OR $params['save_path'] = config_item('sess_save_path');
+
+		$this->_config = $params;
+
+		// Security is king
+		ini_set('session.use_trans_sid', 0);
+		ini_set('session.use_strict_mode', 1);
+		ini_set('session.use_cookies', 1);
+		ini_set('session.use_only_cookies', 1);
+
+		$this->_configure_sid_length();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Configure session ID length
+	 *
+	 * To make life easier, we used to force SHA-1 and 4 bits per
+	 * character on everyone. And of course, someone was unhappy.
+	 *
+	 * Then PHP 7.1 broke backwards-compatibility because ext/session
+	 * is such a mess that nobody wants to touch it with a pole stick,
+	 * and the one guy who does, nobody has the energy to argue with.
+	 *
+	 * So we were forced to make changes, and OF COURSE something was
+	 * going to break and now we have this pile of shit. -- Narf
+	 *
+	 * @return	void
+	 */
+	protected function _configure_sid_length()
+	{
+		if (PHP_VERSION_ID < 70100)
+		{
+			$hash_function = ini_get('session.hash_function');
+			if (ctype_digit($hash_function))
+			{
+				if ($hash_function !== '1')
+				{
+					ini_set('session.hash_function', 1);
+				}
+
+				$bits = 160;
+			}
+			elseif ( ! in_array($hash_function, hash_algos(), TRUE))
+			{
+				ini_set('session.hash_function', 1);
+				$bits = 160;
+			}
+			elseif (($bits = strlen(hash($hash_function, 'dummy', false)) * 4) < 160)
+			{
+				ini_set('session.hash_function', 1);
+				$bits = 160;
+			}
+
+			$bits_per_character = (int) ini_get('session.hash_bits_per_character');
+			$sid_length         = (int) ceil($bits / $bits_per_character);
+		}
+		else
+		{
+			$bits_per_character = (int) ini_get('session.sid_bits_per_character');
+			$sid_length         = (int) ini_get('session.sid_length');
+			if (($bits = $sid_length * $bits_per_character) < 160)
+			{
+				// Add as many more characters as necessary to reach at least 160 bits
+				$sid_length += (int) ceil((160 % $bits) / $bits_per_character);
+				ini_set('session.sid_length', $sid_length);
+			}
+		}
+
+		// Yes, 4,5,6 are the only known possible values as of 2016-10-27
+		switch ($bits_per_character)
+		{
+			case 4:
+				$this->_sid_regexp = '[0-9a-f]';
+				break;
+			case 5:
+				$this->_sid_regexp = '[0-9a-v]';
+				break;
+			case 6:
+				$this->_sid_regexp = '[0-9a-zA-Z,-]';
+				break;
+		}
+
+		$this->_sid_regexp .= '{'.$sid_length.'}';
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Handle temporary variables
+	 *
+	 * Clears old "flash" data, marks the new one for deletion and handles
+	 * "temp" data deletion.
+	 *
+	 * @return	void
+	 */
+	protected function _ci_init_vars()
+	{
+		if ( ! empty($_SESSION['__ci_vars']))
+		{
+			$current_time = time();
+
+			foreach ($_SESSION['__ci_vars'] as $key => &$value)
+			{
+				if ($value === 'new')
+				{
+					$_SESSION['__ci_vars'][$key] = 'old';
+				}
+				elseif ($value === 'old' || $value < $current_time)
+				{
+					unset($_SESSION[$key], $_SESSION['__ci_vars'][$key]);
+				}
+			}
+
+			if (empty($_SESSION['__ci_vars']))
+			{
+				unset($_SESSION['__ci_vars']);
+			}
+		}
+
+		$this->userdata =& $_SESSION;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Mark as flash
+	 *
+	 * @param	mixed	$key	Session data key(s)
+	 * @return	bool
+	 */
+	public function mark_as_flash($key)
+	{
+		if (is_array($key))
+		{
+			for ($i = 0, $c = count($key); $i < $c; $i++)
+			{
+				if ( ! isset($_SESSION[$key[$i]]))
+				{
+					return FALSE;
+				}
+			}
+
+			$new = array_fill_keys($key, 'new');
+
+			$_SESSION['__ci_vars'] = isset($_SESSION['__ci_vars'])
+				? array_merge($_SESSION['__ci_vars'], $new)
+				: $new;
+
+			return TRUE;
+		}
+
+		if ( ! isset($_SESSION[$key]))
+		{
+			return FALSE;
+		}
+
+		$_SESSION['__ci_vars'][$key] = 'new';
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get flash keys
+	 *
+	 * @return	array
+	 */
+	public function get_flash_keys()
+	{
+		if ( ! isset($_SESSION['__ci_vars']))
+		{
+			return array();
+		}
+
+		$keys = array();
+		foreach (array_keys($_SESSION['__ci_vars']) as $key)
+		{
+			is_int($_SESSION['__ci_vars'][$key]) OR $keys[] = $key;
+		}
+
+		return $keys;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Unmark flash
+	 *
+	 * @param	mixed	$key	Session data key(s)
+	 * @return	void
+	 */
+	public function unmark_flash($key)
+	{
+		if (empty($_SESSION['__ci_vars']))
+		{
+			return;
+		}
+
+		is_array($key) OR $key = array($key);
+
+		foreach ($key as $k)
+		{
+			if (isset($_SESSION['__ci_vars'][$k]) && ! is_int($_SESSION['__ci_vars'][$k]))
+			{
+				unset($_SESSION['__ci_vars'][$k]);
+			}
+		}
+
+		if (empty($_SESSION['__ci_vars']))
+		{
+			unset($_SESSION['__ci_vars']);
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Mark as temp
+	 *
+	 * @param	mixed	$key	Session data key(s)
+	 * @param	int	$ttl	Time-to-live in seconds
+	 * @return	bool
+	 */
+	public function mark_as_temp($key, $ttl = 300)
+	{
+		$ttl += time();
+
+		if (is_array($key))
+		{
+			$temp = array();
+
+			foreach ($key as $k => $v)
+			{
+				// Do we have a key => ttl pair, or just a key?
+				if (is_int($k))
+				{
+					$k = $v;
+					$v = $ttl;
+				}
+				else
+				{
+					$v += time();
+				}
+
+				if ( ! isset($_SESSION[$k]))
+				{
+					return FALSE;
+				}
+
+				$temp[$k] = $v;
+			}
+
+			$_SESSION['__ci_vars'] = isset($_SESSION['__ci_vars'])
+				? array_merge($_SESSION['__ci_vars'], $temp)
+				: $temp;
+
+			return TRUE;
+		}
+
+		if ( ! isset($_SESSION[$key]))
+		{
+			return FALSE;
+		}
+
+		$_SESSION['__ci_vars'][$key] = $ttl;
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get temp keys
+	 *
+	 * @return	array
+	 */
+	public function get_temp_keys()
+	{
+		if ( ! isset($_SESSION['__ci_vars']))
+		{
+			return array();
+		}
+
+		$keys = array();
+		foreach (array_keys($_SESSION['__ci_vars']) as $key)
+		{
+			is_int($_SESSION['__ci_vars'][$key]) && $keys[] = $key;
+		}
+
+		return $keys;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Unmark temp
+	 *
+	 * @param	mixed	$key	Session data key(s)
+	 * @return	void
+	 */
+	public function unmark_temp($key)
+	{
+		if (empty($_SESSION['__ci_vars']))
+		{
+			return;
+		}
+
+		is_array($key) OR $key = array($key);
+
+		foreach ($key as $k)
+		{
+			if (isset($_SESSION['__ci_vars'][$k]) && is_int($_SESSION['__ci_vars'][$k]))
+			{
+				unset($_SESSION['__ci_vars'][$k]);
+			}
+		}
+
+		if (empty($_SESSION['__ci_vars']))
+		{
+			unset($_SESSION['__ci_vars']);
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * __get()
+	 *
+	 * @param	string	$key	'session_id' or a session data key
+	 * @return	mixed
+	 */
+	public function __get($key)
+	{
+		// Note: Keep this order the same, just in case somebody wants to
+		//       use 'session_id' as a session data key, for whatever reason
+		if (isset($_SESSION[$key]))
+		{
+			return $_SESSION[$key];
+		}
+		elseif ($key === 'session_id')
+		{
+			return session_id();
+		}
+
+		return NULL;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * __isset()
+	 *
+	 * @param	string	$key	'session_id' or a session data key
+	 * @return	bool
+	 */
+	public function __isset($key)
+	{
+		if ($key === 'session_id')
+		{
+			return (session_status() === PHP_SESSION_ACTIVE);
+		}
+
+		return isset($_SESSION[$key]);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * __set()
+	 *
+	 * @param	string	$key	Session data key
+	 * @param	mixed	$value	Session data value
+	 * @return	void
+	 */
+	public function __set($key, $value)
+	{
+		$_SESSION[$key] = $value;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Session destroy
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @return	void
+	 */
+	public function sess_destroy()
+	{
+		session_destroy();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Session regenerate
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	bool	$destroy	Destroy old session data flag
+	 * @return	void
+	 */
+	public function sess_regenerate($destroy = FALSE)
+	{
+		$_SESSION['__ci_last_regenerate'] = time();
+		session_regenerate_id($destroy);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get userdata reference
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @return	array
+	 */
+	public function &get_userdata()
+	{
+		return $_SESSION;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Userdata (fetch)
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	string	$key	Session data key
+	 * @return	mixed	Session data value or NULL if not found
+	 */
+	public function userdata($key = NULL)
+	{
+		if (isset($key))
+		{
+			return isset($_SESSION[$key]) ? $_SESSION[$key] : NULL;
+		}
+		elseif (empty($_SESSION))
+		{
+			return array();
+		}
+
+		$userdata = array();
+		$_exclude = array_merge(
+			array('__ci_vars'),
+			$this->get_flash_keys(),
+			$this->get_temp_keys()
+		);
+
+		foreach (array_keys($_SESSION) as $key)
+		{
+			if ( ! in_array($key, $_exclude, TRUE))
+			{
+				$userdata[$key] = $_SESSION[$key];
+			}
+		}
+
+		return $userdata;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Set userdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	mixed	$data	Session data key or an associative array
+	 * @param	mixed	$value	Value to store
+	 * @return	void
+	 */
+	public function set_userdata($data, $value = NULL)
+	{
+		if (is_array($data))
+		{
+			foreach ($data as $key => &$value)
+			{
+				$_SESSION[$key] = $value;
+			}
+
+			return;
+		}
+
+		$_SESSION[$data] = $value;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Unset userdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	mixed	$key	Session data key(s)
+	 * @return	void
+	 */
+	public function unset_userdata($key)
+	{
+		if (is_array($key))
+		{
+			foreach ($key as $k)
+			{
+				unset($_SESSION[$k]);
+			}
+
+			return;
+		}
+
+		unset($_SESSION[$key]);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * All userdata (fetch)
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @return	array	$_SESSION, excluding flash data items
+	 */
+	public function all_userdata()
+	{
+		return $this->userdata();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Has userdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	string	$key	Session data key
+	 * @return	bool
+	 */
+	public function has_userdata($key)
+	{
+		return isset($_SESSION[$key]);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Flashdata (fetch)
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	string	$key	Session data key
+	 * @return	mixed	Session data value or NULL if not found
+	 */
+	public function flashdata($key = NULL)
+	{
+		if (isset($key))
+		{
+			return (isset($_SESSION['__ci_vars'], $_SESSION['__ci_vars'][$key], $_SESSION[$key]) && ! is_int($_SESSION['__ci_vars'][$key]))
+				? $_SESSION[$key]
+				: NULL;
+		}
+
+		$flashdata = array();
+
+		if ( ! empty($_SESSION['__ci_vars']))
+		{
+			foreach ($_SESSION['__ci_vars'] as $key => &$value)
+			{
+				is_int($value) OR $flashdata[$key] = $_SESSION[$key];
+			}
+		}
+
+		return $flashdata;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Set flashdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	mixed	$data	Session data key or an associative array
+	 * @param	mixed	$value	Value to store
+	 * @return	void
+	 */
+	public function set_flashdata($data, $value = NULL)
+	{
+		$this->set_userdata($data, $value);
+		$this->mark_as_flash(is_array($data) ? array_keys($data) : $data);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Keep flashdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	mixed	$key	Session data key(s)
+	 * @return	void
+	 */
+	public function keep_flashdata($key)
+	{
+		$this->mark_as_flash($key);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Temp data (fetch)
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	string	$key	Session data key
+	 * @return	mixed	Session data value or NULL if not found
+	 */
+	public function tempdata($key = NULL)
+	{
+		if (isset($key))
+		{
+			return (isset($_SESSION['__ci_vars'], $_SESSION['__ci_vars'][$key], $_SESSION[$key]) && is_int($_SESSION['__ci_vars'][$key]))
+				? $_SESSION[$key]
+				: NULL;
+		}
+
+		$tempdata = array();
+
+		if ( ! empty($_SESSION['__ci_vars']))
+		{
+			foreach ($_SESSION['__ci_vars'] as $key => &$value)
+			{
+				is_int($value) && $tempdata[$key] = $_SESSION[$key];
+			}
+		}
+
+		return $tempdata;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Set tempdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	mixed	$data	Session data key or an associative array of items
+	 * @param	mixed	$value	Value to store
+	 * @param	int	$ttl	Time-to-live in seconds
+	 * @return	void
+	 */
+	public function set_tempdata($data, $value = NULL, $ttl = 300)
+	{
+		$this->set_userdata($data, $value);
+		$this->mark_as_temp(is_array($data) ? array_keys($data) : $data, $ttl);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Unset tempdata
+	 *
+	 * Legacy CI_Session compatibility method
+	 *
+	 * @param	mixed	$data	Session data key(s)
+	 * @return	void
+	 */
+	public function unset_tempdata($key)
+	{
+		$this->unmark_temp($key);
+	}
+
+}
diff --git a/system/libraries/Session/Session_driver.php b/system/libraries/Session/Session_driver.php
new file mode 100644
index 00000000..734b6e05
--- /dev/null
+++ b/system/libraries/Session/Session_driver.php
@@ -0,0 +1,187 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Session Driver Class
+ *
+ * @package	CodeIgniter
+ * @subpackage	Libraries
+ * @category	Sessions
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/libraries/sessions.html
+ */
+abstract class CI_Session_driver implements SessionHandlerInterface {
+
+	protected $_config;
+
+	/**
+	 * Data fingerprint
+	 *
+	 * @var	bool
+	 */
+	protected $_fingerprint;
+
+	/**
+	 * Lock placeholder
+	 *
+	 * @var	mixed
+	 */
+	protected $_lock = FALSE;
+
+	/**
+	 * Read session ID
+	 *
+	 * Used to detect session_regenerate_id() calls because PHP only calls
+	 * write() after regenerating the ID.
+	 *
+	 * @var	string
+	 */
+	protected $_session_id;
+
+	/**
+	 * Success and failure return values
+	 *
+	 * Necessary due to a bug in all PHP 5 versions where return values
+	 * from userspace handlers are not handled properly. PHP 7 fixes the
+	 * bug, so we need to return different values depending on the version.
+	 *
+	 * @see	https://wiki.php.net/rfc/session.user.return-value
+	 * @var	mixed
+	 */
+	protected $_success, $_failure;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(&$params)
+	{
+		$this->_config =& $params;
+
+		if (is_php('7'))
+		{
+			$this->_success = TRUE;
+			$this->_failure = FALSE;
+		}
+		else
+		{
+			$this->_success = 0;
+			$this->_failure = -1;
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * PHP 5.x validate ID
+	 *
+	 * Enforces session.use_strict_mode
+	 *
+	 * @return	void
+	 */
+	public function php5_validate_id()
+	{
+		if (isset($_COOKIE[$this->_config['cookie_name']]) && ! $this->validateSessionId($_COOKIE[$this->_config['cookie_name']]))
+		{
+			unset($_COOKIE[$this->_config['cookie_name']]);
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cookie destroy
+	 *
+	 * Internal method to force removal of a cookie by the client
+	 * when session_destroy() is called.
+	 *
+	 * @return	bool
+	 */
+	protected function _cookie_destroy()
+	{
+		return setcookie(
+			$this->_config['cookie_name'],
+			NULL,
+			1,
+			$this->_config['cookie_path'],
+			$this->_config['cookie_domain'],
+			$this->_config['cookie_secure'],
+			TRUE
+		);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get lock
+	 *
+	 * A dummy method allowing drivers with no locking functionality
+	 * (databases other than PostgreSQL and MySQL) to act as if they
+	 * do acquire a lock.
+	 *
+	 * @param	string	$session_id
+	 * @return	bool
+	 */
+	protected function _get_lock($session_id)
+	{
+		$this->_lock = TRUE;
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Release lock
+	 *
+	 * @return	bool
+	 */
+	protected function _release_lock()
+	{
+		if ($this->_lock)
+		{
+			$this->_lock = FALSE;
+		}
+
+		return TRUE;
+	}
+}
diff --git a/system/libraries/Session/drivers/Session_database_driver.php b/system/libraries/Session/drivers/Session_database_driver.php
new file mode 100644
index 00000000..a3055af5
--- /dev/null
+++ b/system/libraries/Session/drivers/Session_database_driver.php
@@ -0,0 +1,445 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Session Database Driver
+ *
+ * @package	CodeIgniter
+ * @subpackage	Libraries
+ * @category	Sessions
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/libraries/sessions.html
+ */
+class CI_Session_database_driver extends CI_Session_driver implements SessionHandlerInterface {
+
+	/**
+	 * DB object
+	 *
+	 * @var	object
+	 */
+	protected $_db;
+
+	/**
+	 * Row exists flag
+	 *
+	 * @var	bool
+	 */
+	protected $_row_exists = FALSE;
+
+	/**
+	 * Lock "driver" flag
+	 *
+	 * @var	string
+	 */
+	protected $_platform;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(&$params)
+	{
+		parent::__construct($params);
+
+		$CI =& get_instance();
+		isset($CI->db) OR $CI->load->database();
+		$this->_db = $CI->db;
+
+		if ( ! $this->_db instanceof CI_DB_query_builder)
+		{
+			throw new Exception('Query Builder not enabled for the configured database. Aborting.');
+		}
+		elseif ($this->_db->pconnect)
+		{
+			throw new Exception('Configured database connection is persistent. Aborting.');
+		}
+		elseif ($this->_db->cache_on)
+		{
+			throw new Exception('Configured database connection has cache enabled. Aborting.');
+		}
+
+		$db_driver = $this->_db->dbdriver.(empty($this->_db->subdriver) ? '' : '_'.$this->_db->subdriver);
+		if (strpos($db_driver, 'mysql') !== FALSE)
+		{
+			$this->_platform = 'mysql';
+		}
+		elseif (in_array($db_driver, array('postgre', 'pdo_pgsql'), TRUE))
+		{
+			$this->_platform = 'postgre';
+		}
+
+		// Note: BC work-around for the old 'sess_table_name' setting, should be removed in the future.
+		if ( ! isset($this->_config['save_path']) && ($this->_config['save_path'] = config_item('sess_table_name')))
+		{
+			log_message('debug', 'Session: "sess_save_path" is empty; using BC fallback to "sess_table_name".');
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Open
+	 *
+	 * Initializes the database connection
+	 *
+	 * @param	string	$save_path	Table name
+	 * @param	string	$name		Session cookie name, unused
+	 * @return	bool
+	 */
+	public function open($save_path, $name)
+	{
+		if (empty($this->_db->conn_id) && ! $this->_db->db_connect())
+		{
+			return $this->_failure;
+		}
+
+		$this->php5_validate_id();
+
+		return $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Read
+	 *
+	 * Reads session data and acquires a lock
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	string	Serialized session data
+	 */
+	public function read($session_id)
+	{
+		if ($this->_get_lock($session_id) === FALSE)
+		{
+			return $this->_failure;
+		}
+
+		// Prevent previous QB calls from messing with our queries
+		$this->_db->reset_query();
+
+		// Needed by write() to detect session_regenerate_id() calls
+		$this->_session_id = $session_id;
+
+		$this->_db
+			->select('data')
+			->from($this->_config['save_path'])
+			->where('id', $session_id);
+
+		if ($this->_config['match_ip'])
+		{
+			$this->_db->where('ip_address', $_SERVER['REMOTE_ADDR']);
+		}
+
+		if ( ! ($result = $this->_db->get()) OR ($result = $result->row()) === NULL)
+		{
+			// PHP7 will reuse the same SessionHandler object after
+			// ID regeneration, so we need to explicitly set this to
+			// FALSE instead of relying on the default ...
+			$this->_row_exists = FALSE;
+			$this->_fingerprint = md5('');
+			return '';
+		}
+
+		// PostgreSQL's variant of a BLOB datatype is Bytea, which is a
+		// PITA to work with, so we use base64-encoded data in a TEXT
+		// field instead.
+		$result = ($this->_platform === 'postgre')
+			? base64_decode(rtrim($result->data))
+			: $result->data;
+
+		$this->_fingerprint = md5($result);
+		$this->_row_exists = TRUE;
+		return $result;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Write
+	 *
+	 * Writes (create / update) session data
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @param	string	$session_data	Serialized session data
+	 * @return	bool
+	 */
+	public function write($session_id, $session_data)
+	{
+		// Prevent previous QB calls from messing with our queries
+		$this->_db->reset_query();
+
+		// Was the ID regenerated?
+		if (isset($this->_session_id) && $session_id !== $this->_session_id)
+		{
+			if ( ! $this->_release_lock() OR ! $this->_get_lock($session_id))
+			{
+				return $this->_failure;
+			}
+
+			$this->_row_exists = FALSE;
+			$this->_session_id = $session_id;
+		}
+		elseif ($this->_lock === FALSE)
+		{
+			return $this->_failure;
+		}
+
+		if ($this->_row_exists === FALSE)
+		{
+			$insert_data = array(
+				'id' => $session_id,
+				'ip_address' => $_SERVER['REMOTE_ADDR'],
+				'timestamp' => time(),
+				'data' => ($this->_platform === 'postgre' ? base64_encode($session_data) : $session_data)
+			);
+
+			if ($this->_db->insert($this->_config['save_path'], $insert_data))
+			{
+				$this->_fingerprint = md5($session_data);
+				$this->_row_exists = TRUE;
+				return $this->_success;
+			}
+
+			return $this->_failure;
+		}
+
+		$this->_db->where('id', $session_id);
+		if ($this->_config['match_ip'])
+		{
+			$this->_db->where('ip_address', $_SERVER['REMOTE_ADDR']);
+		}
+
+		$update_data = array('timestamp' => time());
+		if ($this->_fingerprint !== md5($session_data))
+		{
+			$update_data['data'] = ($this->_platform === 'postgre')
+				? base64_encode($session_data)
+				: $session_data;
+		}
+
+		if ($this->_db->update($this->_config['save_path'], $update_data))
+		{
+			$this->_fingerprint = md5($session_data);
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Close
+	 *
+	 * Releases locks
+	 *
+	 * @return	bool
+	 */
+	public function close()
+	{
+		return ($this->_lock && ! $this->_release_lock())
+			? $this->_failure
+			: $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Destroy
+	 *
+	 * Destroys the current session.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	public function destroy($session_id)
+	{
+		if ($this->_lock)
+		{
+			// Prevent previous QB calls from messing with our queries
+			$this->_db->reset_query();
+
+			$this->_db->where('id', $session_id);
+			if ($this->_config['match_ip'])
+			{
+				$this->_db->where('ip_address', $_SERVER['REMOTE_ADDR']);
+			}
+
+			if ( ! $this->_db->delete($this->_config['save_path']))
+			{
+				return $this->_failure;
+			}
+		}
+
+		if ($this->close() === $this->_success)
+		{
+			$this->_cookie_destroy();
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Garbage Collector
+	 *
+	 * Deletes expired sessions
+	 *
+	 * @param	int 	$maxlifetime	Maximum lifetime of sessions
+	 * @return	bool
+	 */
+	public function gc($maxlifetime)
+	{
+		// Prevent previous QB calls from messing with our queries
+		$this->_db->reset_query();
+
+		return ($this->_db->delete($this->_config['save_path'], 'timestamp < '.(time() - $maxlifetime)))
+			? $this->_success
+			: $this->_failure;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate ID
+	 *
+	 * Checks whether a session ID record exists server-side,
+	 * to enforce session.use_strict_mode.
+	 *
+	 * @param	string	$id
+	 * @return	bool
+	 */
+	public function validateSessionId($id)
+	{
+		// Prevent previous QB calls from messing with our queries
+		$this->_db->reset_query();
+
+		$this->_db->select('1')->from($this->_config['save_path'])->where('id', $id);
+		empty($this->_config['match_ip']) OR $this->_db->where('ip_address', $_SERVER['REMOTE_ADDR']);
+		$result = $this->_db->get();
+		empty($result) OR $result = $result->row();
+
+		return ! empty($result);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get lock
+	 *
+	 * Acquires a lock, depending on the underlying platform.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	protected function _get_lock($session_id)
+	{
+		if ($this->_platform === 'mysql')
+		{
+			$arg = md5($session_id.($this->_config['match_ip'] ? '_'.$_SERVER['REMOTE_ADDR'] : ''));
+			if ($this->_db->query("SELECT GET_LOCK('".$arg."', 300) AS ci_session_lock")->row()->ci_session_lock)
+			{
+				$this->_lock = $arg;
+				return TRUE;
+			}
+
+			return FALSE;
+		}
+		elseif ($this->_platform === 'postgre')
+		{
+			$arg = "hashtext('".$session_id."')".($this->_config['match_ip'] ? ", hashtext('".$_SERVER['REMOTE_ADDR']."')" : '');
+			if ($this->_db->simple_query('SELECT pg_advisory_lock('.$arg.')'))
+			{
+				$this->_lock = $arg;
+				return TRUE;
+			}
+
+			return FALSE;
+		}
+
+		return parent::_get_lock($session_id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Release lock
+	 *
+	 * Releases a previously acquired lock
+	 *
+	 * @return	bool
+	 */
+	protected function _release_lock()
+	{
+		if ( ! $this->_lock)
+		{
+			return TRUE;
+		}
+
+		if ($this->_platform === 'mysql')
+		{
+			if ($this->_db->query("SELECT RELEASE_LOCK('".$this->_lock."') AS ci_session_lock")->row()->ci_session_lock)
+			{
+				$this->_lock = FALSE;
+				return TRUE;
+			}
+
+			return FALSE;
+		}
+		elseif ($this->_platform === 'postgre')
+		{
+			if ($this->_db->simple_query('SELECT pg_advisory_unlock('.$this->_lock.')'))
+			{
+				$this->_lock = FALSE;
+				return TRUE;
+			}
+
+			return FALSE;
+		}
+
+		return parent::_release_lock();
+	}
+}
diff --git a/system/libraries/Session/drivers/Session_files_driver.php b/system/libraries/Session/drivers/Session_files_driver.php
new file mode 100644
index 00000000..49bf5b78
--- /dev/null
+++ b/system/libraries/Session/drivers/Session_files_driver.php
@@ -0,0 +1,432 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+*/
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Session Files Driver
+ *
+ * @package	CodeIgniter
+ * @subpackage	Libraries
+ * @category	Sessions
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/libraries/sessions.html
+ */
+class CI_Session_files_driver extends CI_Session_driver implements SessionHandlerInterface {
+
+	/**
+	 * Save path
+	 *
+	 * @var	string
+	 */
+	protected $_save_path;
+
+	/**
+	 * File handle
+	 *
+	 * @var	resource
+	 */
+	protected $_file_handle;
+
+	/**
+	 * File name
+	 *
+	 * @var	resource
+	 */
+	protected $_file_path;
+
+	/**
+	 * File new flag
+	 *
+	 * @var	bool
+	 */
+	protected $_file_new;
+
+	/**
+	 * Validate SID regular expression
+	 *
+	 * @var	string
+	 */
+	protected $_sid_regexp;
+
+	/**
+	 * mbstring.func_overload flag
+	 *
+	 * @var	bool
+	 */
+	protected static $func_overload;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(&$params)
+	{
+		parent::__construct($params);
+
+		if (isset($this->_config['save_path']))
+		{
+			$this->_config['save_path'] = rtrim($this->_config['save_path'], '/\\');
+			ini_set('session.save_path', $this->_config['save_path']);
+		}
+		else
+		{
+			log_message('debug', 'Session: "sess_save_path" is empty; using "session.save_path" value from php.ini.');
+			$this->_config['save_path'] = rtrim(ini_get('session.save_path'), '/\\');
+		}
+
+		$this->_sid_regexp = $this->_config['_sid_regexp'];
+
+		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Open
+	 *
+	 * Sanitizes the save_path directory.
+	 *
+	 * @param	string	$save_path	Path to session files' directory
+	 * @param	string	$name		Session cookie name
+	 * @return	bool
+	 */
+	public function open($save_path, $name)
+	{
+		if ( ! is_dir($save_path))
+		{
+			if ( ! mkdir($save_path, 0700, TRUE))
+			{
+				log_message('error', "Session: Configured save path '".$this->_config['save_path']."' is not a directory, doesn't exist or cannot be created.");
+				return $this->_failure;
+			}
+		}
+		elseif ( ! is_writable($save_path))
+		{
+			log_message('error', "Session: Configured save path '".$this->_config['save_path']."' is not writable by the PHP process.");
+			return $this->_failure;
+		}
+
+		$this->_config['save_path'] = $save_path;
+		$this->_file_path = $this->_config['save_path'].DIRECTORY_SEPARATOR
+			.$name // we'll use the session cookie name as a prefix to avoid collisions
+			.($this->_config['match_ip'] ? md5($_SERVER['REMOTE_ADDR']) : '');
+
+		$this->php5_validate_id();
+
+		return $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Read
+	 *
+	 * Reads session data and acquires a lock
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	string	Serialized session data
+	 */
+	public function read($session_id)
+	{
+		// This might seem weird, but PHP 5.6 introduces session_reset(),
+		// which re-reads session data
+		if ($this->_file_handle === NULL)
+		{
+			$this->_file_new = ! file_exists($this->_file_path.$session_id);
+
+			if (($this->_file_handle = fopen($this->_file_path.$session_id, 'c+b')) === FALSE)
+			{
+				log_message('error', "Session: Unable to open file '".$this->_file_path.$session_id."'.");
+				return $this->_failure;
+			}
+
+			if (flock($this->_file_handle, LOCK_EX) === FALSE)
+			{
+				log_message('error', "Session: Unable to obtain lock for file '".$this->_file_path.$session_id."'.");
+				fclose($this->_file_handle);
+				$this->_file_handle = NULL;
+				return $this->_failure;
+			}
+
+			// Needed by write() to detect session_regenerate_id() calls
+			$this->_session_id = $session_id;
+
+			if ($this->_file_new)
+			{
+				chmod($this->_file_path.$session_id, 0600);
+				$this->_fingerprint = md5('');
+				return '';
+			}
+
+			// Prevent possible data corruption
+			// See https://github.com/bcit-ci/CodeIgniter/issues/5857
+			clearstatcache(TRUE, $this->_file_path.$session_id);
+		}
+		// We shouldn't need this, but apparently we do ...
+		// See https://github.com/bcit-ci/CodeIgniter/issues/4039
+		elseif ($this->_file_handle === FALSE)
+		{
+			return $this->_failure;
+		}
+		else
+		{
+			rewind($this->_file_handle);
+		}
+
+		$session_data = '';
+		for ($read = 0, $length = filesize($this->_file_path.$session_id); $read < $length; $read += self::strlen($buffer))
+		{
+			if (($buffer = fread($this->_file_handle, $length - $read)) === FALSE)
+			{
+				break;
+			}
+
+			$session_data .= $buffer;
+		}
+
+		$this->_fingerprint = md5($session_data);
+		return $session_data;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Write
+	 *
+	 * Writes (create / update) session data
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @param	string	$session_data	Serialized session data
+	 * @return	bool
+	 */
+	public function write($session_id, $session_data)
+	{
+		// If the two IDs don't match, we have a session_regenerate_id() call
+		// and we need to close the old handle and open a new one
+		if ($session_id !== $this->_session_id && ($this->close() === $this->_failure OR $this->read($session_id) === $this->_failure))
+		{
+			return $this->_failure;
+		}
+
+		if ( ! is_resource($this->_file_handle))
+		{
+			return $this->_failure;
+		}
+		elseif ($this->_fingerprint === md5($session_data))
+		{
+			return ( ! $this->_file_new && ! touch($this->_file_path.$session_id))
+				? $this->_failure
+				: $this->_success;
+		}
+
+		if ( ! $this->_file_new)
+		{
+			ftruncate($this->_file_handle, 0);
+			rewind($this->_file_handle);
+		}
+
+		if (($length = strlen($session_data)) > 0)
+		{
+			for ($written = 0; $written < $length; $written += $result)
+			{
+				if (($result = fwrite($this->_file_handle, substr($session_data, $written))) === FALSE)
+				{
+					break;
+				}
+			}
+
+			if ( ! is_int($result))
+			{
+				$this->_fingerprint = md5(substr($session_data, 0, $written));
+				log_message('error', 'Session: Unable to write data.');
+				return $this->_failure;
+			}
+		}
+
+		$this->_fingerprint = md5($session_data);
+		return $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Close
+	 *
+	 * Releases locks and closes file descriptor.
+	 *
+	 * @return	bool
+	 */
+	public function close()
+	{
+		if (is_resource($this->_file_handle))
+		{
+			flock($this->_file_handle, LOCK_UN);
+			fclose($this->_file_handle);
+
+			$this->_file_handle = $this->_file_new = $this->_session_id = NULL;
+		}
+
+		return $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Destroy
+	 *
+	 * Destroys the current session.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	public function destroy($session_id)
+	{
+		if ($this->close() === $this->_success)
+		{
+			if (file_exists($this->_file_path.$session_id))
+			{
+				$this->_cookie_destroy();
+				return unlink($this->_file_path.$session_id)
+					? $this->_success
+					: $this->_failure;
+			}
+
+			return $this->_success;
+		}
+		elseif ($this->_file_path !== NULL)
+		{
+			clearstatcache();
+			if (file_exists($this->_file_path.$session_id))
+			{
+				$this->_cookie_destroy();
+				return unlink($this->_file_path.$session_id)
+					? $this->_success
+					: $this->_failure;
+			}
+
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Garbage Collector
+	 *
+	 * Deletes expired sessions
+	 *
+	 * @param	int 	$maxlifetime	Maximum lifetime of sessions
+	 * @return	bool
+	 */
+	public function gc($maxlifetime)
+	{
+		if ( ! is_dir($this->_config['save_path']) OR ($directory = opendir($this->_config['save_path'])) === FALSE)
+		{
+			log_message('debug', "Session: Garbage collector couldn't list files under directory '".$this->_config['save_path']."'.");
+			return $this->_failure;
+		}
+
+		$ts = time() - $maxlifetime;
+
+		$pattern = ($this->_config['match_ip'] === TRUE)
+			? '[0-9a-f]{32}'
+			: '';
+
+		$pattern = sprintf(
+			'#\A%s'.$pattern.$this->_sid_regexp.'\z#',
+			preg_quote($this->_config['cookie_name'])
+		);
+
+		while (($file = readdir($directory)) !== FALSE)
+		{
+			// If the filename doesn't match this pattern, it's either not a session file or is not ours
+			if ( ! preg_match($pattern, $file)
+				OR ! is_file($this->_config['save_path'].DIRECTORY_SEPARATOR.$file)
+				OR ($mtime = filemtime($this->_config['save_path'].DIRECTORY_SEPARATOR.$file)) === FALSE
+				OR $mtime > $ts)
+			{
+				continue;
+			}
+
+			unlink($this->_config['save_path'].DIRECTORY_SEPARATOR.$file);
+		}
+
+		closedir($directory);
+
+		return $this->_success;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate ID
+	 *
+	 * Checks whether a session ID record exists server-side,
+	 * to enforce session.use_strict_mode.
+	 *
+	 * @param	string	$id
+	 * @return	bool
+	 */
+	public function validateSessionId($id)
+	{
+		$result = is_file($this->_file_path.$id);
+		clearstatcache(TRUE, $this->_file_path.$id);
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return (self::$func_overload)
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+}
diff --git a/system/libraries/Session/drivers/Session_memcached_driver.php b/system/libraries/Session/drivers/Session_memcached_driver.php
new file mode 100644
index 00000000..b4d3eb46
--- /dev/null
+++ b/system/libraries/Session/drivers/Session_memcached_driver.php
@@ -0,0 +1,397 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Session Memcached Driver
+ *
+ * @package	CodeIgniter
+ * @subpackage	Libraries
+ * @category	Sessions
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/libraries/sessions.html
+ */
+class CI_Session_memcached_driver extends CI_Session_driver implements SessionHandlerInterface {
+
+	/**
+	 * Memcached instance
+	 *
+	 * @var	Memcached
+	 */
+	protected $_memcached;
+
+	/**
+	 * Key prefix
+	 *
+	 * @var	string
+	 */
+	protected $_key_prefix = 'ci_session:';
+
+	/**
+	 * Lock key
+	 *
+	 * @var	string
+	 */
+	protected $_lock_key;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(&$params)
+	{
+		parent::__construct($params);
+
+		if (empty($this->_config['save_path']))
+		{
+			log_message('error', 'Session: No Memcached save path configured.');
+		}
+
+		if ($this->_config['match_ip'] === TRUE)
+		{
+			$this->_key_prefix .= $_SERVER['REMOTE_ADDR'].':';
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Open
+	 *
+	 * Sanitizes save_path and initializes connections.
+	 *
+	 * @param	string	$save_path	Server path(s)
+	 * @param	string	$name		Session cookie name, unused
+	 * @return	bool
+	 */
+	public function open($save_path, $name)
+	{
+		$this->_memcached = new Memcached();
+		$this->_memcached->setOption(Memcached::OPT_BINARY_PROTOCOL, TRUE); // required for touch() usage
+		$server_list = array();
+		foreach ($this->_memcached->getServerList() as $server)
+		{
+			$server_list[] = $server['host'].':'.$server['port'];
+		}
+
+		if ( ! preg_match_all('#,?([^,:]+)\:(\d{1,5})(?:\:(\d+))?#', $this->_config['save_path'], $matches, PREG_SET_ORDER))
+		{
+			$this->_memcached = NULL;
+			log_message('error', 'Session: Invalid Memcached save path format: '.$this->_config['save_path']);
+			return $this->_failure;
+		}
+
+		foreach ($matches as $match)
+		{
+			// If Memcached already has this server (or if the port is invalid), skip it
+			if (in_array($match[1].':'.$match[2], $server_list, TRUE))
+			{
+				log_message('debug', 'Session: Memcached server pool already has '.$match[1].':'.$match[2]);
+				continue;
+			}
+
+			if ( ! $this->_memcached->addServer($match[1], $match[2], isset($match[3]) ? $match[3] : 0))
+			{
+				log_message('error', 'Could not add '.$match[1].':'.$match[2].' to Memcached server pool.');
+			}
+			else
+			{
+				$server_list[] = $match[1].':'.$match[2];
+			}
+		}
+
+		if (empty($server_list))
+		{
+			log_message('error', 'Session: Memcached server pool is empty.');
+			return $this->_failure;
+		}
+
+		$this->php5_validate_id();
+
+		return $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Read
+	 *
+	 * Reads session data and acquires a lock
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	string	Serialized session data
+	 */
+	public function read($session_id)
+	{
+		if (isset($this->_memcached) && $this->_get_lock($session_id))
+		{
+			// Needed by write() to detect session_regenerate_id() calls
+			$this->_session_id = $session_id;
+
+			$session_data = (string) $this->_memcached->get($this->_key_prefix.$session_id);
+			$this->_fingerprint = md5($session_data);
+			return $session_data;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Write
+	 *
+	 * Writes (create / update) session data
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @param	string	$session_data	Serialized session data
+	 * @return	bool
+	 */
+	public function write($session_id, $session_data)
+	{
+		if ( ! isset($this->_memcached, $this->_lock_key))
+		{
+			return $this->_failure;
+		}
+		// Was the ID regenerated?
+		elseif ($session_id !== $this->_session_id)
+		{
+			if ( ! $this->_release_lock() OR ! $this->_get_lock($session_id))
+			{
+				return $this->_failure;
+			}
+
+			$this->_fingerprint = md5('');
+			$this->_session_id = $session_id;
+		}
+
+		$key = $this->_key_prefix.$session_id;
+
+		$this->_memcached->replace($this->_lock_key, time(), 300);
+		if ($this->_fingerprint !== ($fingerprint = md5($session_data)))
+		{
+			if ($this->_memcached->set($key, $session_data, $this->_config['expiration']))
+			{
+				$this->_fingerprint = $fingerprint;
+				return $this->_success;
+			}
+
+			return $this->_failure;
+		}
+		elseif (
+			$this->_memcached->touch($key, $this->_config['expiration'])
+			OR ($this->_memcached->getResultCode() === Memcached::RES_NOTFOUND && $this->_memcached->set($key, $session_data, $this->_config['expiration']))
+		)
+		{
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Close
+	 *
+	 * Releases locks and closes connection.
+	 *
+	 * @return	bool
+	 */
+	public function close()
+	{
+		if (isset($this->_memcached))
+		{
+			$this->_release_lock();
+			if ( ! $this->_memcached->quit())
+			{
+				return $this->_failure;
+			}
+
+			$this->_memcached = NULL;
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Destroy
+	 *
+	 * Destroys the current session.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	public function destroy($session_id)
+	{
+		if (isset($this->_memcached, $this->_lock_key))
+		{
+			$this->_memcached->delete($this->_key_prefix.$session_id);
+			$this->_cookie_destroy();
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Garbage Collector
+	 *
+	 * Deletes expired sessions
+	 *
+	 * @param	int 	$maxlifetime	Maximum lifetime of sessions
+	 * @return	bool
+	 */
+	public function gc($maxlifetime)
+	{
+		// Not necessary, Memcached takes care of that.
+		return $this->_success;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate ID
+	 *
+	 * Checks whether a session ID record exists server-side,
+	 * to enforce session.use_strict_mode.
+	 *
+	 * @param	string	$id
+	 * @return	bool
+	 */
+	public function validateSessionId($id)
+	{
+		$this->_memcached->get($this->_key_prefix.$id);
+		return ($this->_memcached->getResultCode() === Memcached::RES_SUCCESS);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get lock
+	 *
+	 * Acquires an (emulated) lock.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	protected function _get_lock($session_id)
+	{
+		// PHP 7 reuses the SessionHandler object on regeneration,
+		// so we need to check here if the lock key is for the
+		// correct session ID.
+		if ($this->_lock_key === $this->_key_prefix.$session_id.':lock')
+		{
+			if ( ! $this->_memcached->replace($this->_lock_key, time(), 300))
+			{
+				return ($this->_memcached->getResultCode() === Memcached::RES_NOTFOUND)
+					? $this->_memcached->add($this->_lock_key, time(), 300)
+					: FALSE;
+			}
+
+			return TRUE;
+		}
+
+		// 30 attempts to obtain a lock, in case another request already has it
+		$lock_key = $this->_key_prefix.$session_id.':lock';
+		$attempt = 0;
+		do
+		{
+			if ($this->_memcached->get($lock_key))
+			{
+				sleep(1);
+				continue;
+			}
+
+			$method = ($this->_memcached->getResultCode() === Memcached::RES_NOTFOUND) ? 'add' : 'set';
+			if ( ! $this->_memcached->$method($lock_key, time(), 300))
+			{
+				log_message('error', 'Session: Error while trying to obtain lock for '.$this->_key_prefix.$session_id);
+				return FALSE;
+			}
+
+			$this->_lock_key = $lock_key;
+			break;
+		}
+		while (++$attempt < 30);
+
+		if ($attempt === 30)
+		{
+			log_message('error', 'Session: Unable to obtain lock for '.$this->_key_prefix.$session_id.' after 30 attempts, aborting.');
+			return FALSE;
+		}
+
+		$this->_lock = TRUE;
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Release lock
+	 *
+	 * Releases a previously acquired lock
+	 *
+	 * @return	bool
+	 */
+	protected function _release_lock()
+	{
+		if (isset($this->_memcached, $this->_lock_key) && $this->_lock)
+		{
+			if ( ! $this->_memcached->delete($this->_lock_key) && $this->_memcached->getResultCode() !== Memcached::RES_NOTFOUND)
+			{
+				log_message('error', 'Session: Error while trying to free lock for '.$this->_lock_key);
+				return FALSE;
+			}
+
+			$this->_lock_key = NULL;
+			$this->_lock = FALSE;
+		}
+
+		return TRUE;
+	}
+}
diff --git a/system/libraries/Session/drivers/Session_redis_driver.php b/system/libraries/Session/drivers/Session_redis_driver.php
new file mode 100644
index 00000000..df99cc74
--- /dev/null
+++ b/system/libraries/Session/drivers/Session_redis_driver.php
@@ -0,0 +1,485 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 3.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * CodeIgniter Session Redis Driver
+ *
+ * @package	CodeIgniter
+ * @subpackage	Libraries
+ * @category	Sessions
+ * @author	Andrey Andreev
+ * @link	https://codeigniter.com/userguide3/libraries/sessions.html
+ */
+class CI_Session_redis_driver extends CI_Session_driver implements SessionHandlerInterface {
+
+	/**
+	 * phpRedis instance
+	 *
+	 * @var	Redis
+	 */
+	protected $_redis;
+
+	/**
+	 * Key prefix
+	 *
+	 * @var	string
+	 */
+	protected $_key_prefix = 'ci_session:';
+
+	/**
+	 * Lock key
+	 *
+	 * @var	string
+	 */
+	protected $_lock_key;
+
+	/**
+	 * Key exists flag
+	 *
+	 * @var bool
+	 */
+	protected $_key_exists = FALSE;
+
+	/**
+	 * Name of setTimeout() method in phpRedis
+	 *
+	 * Due to some deprecated methods in phpRedis, we need to call the
+	 * specific methods depending on the version of phpRedis.
+	 *
+	 * @var string
+	 */
+	protected $_setTimeout_name;
+
+	/**
+	 * Name of delete() method in phpRedis
+	 *
+	 * Due to some deprecated methods in phpRedis, we need to call the
+	 * specific methods depending on the version of phpRedis.
+	 *
+	 * @var string
+	 */
+	protected $_delete_name;
+
+	/**
+	 * Success return value of ping() method in phpRedis
+	 *
+	 * @var mixed
+	 */
+	protected $_ping_success;
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Class constructor
+	 *
+	 * @param	array	$params	Configuration parameters
+	 * @return	void
+	 */
+	public function __construct(&$params)
+	{
+		parent::__construct($params);
+
+		// Detect the names of some methods in phpRedis instance
+		if (version_compare(phpversion('redis'), '5', '>='))
+		{
+			$this->_setTimeout_name = 'expire';
+			$this->_delete_name = 'del';
+			$this->_ping_success = TRUE;
+		}
+		else
+		{
+			$this->_setTimeout_name = 'setTimeout';
+			$this->_delete_name = 'delete';
+			$this->_ping_success = '+PONG';
+		}
+
+		if (empty($this->_config['save_path']))
+		{
+			log_message('error', 'Session: No Redis save path configured.');
+		}
+		elseif (preg_match('#^unix://([^\?]+)(?<options>\?.+)?$#', $this->_config['save_path'], $matches))
+		{
+			$save_path = array('path' => $matches[1]);
+		}
+		elseif (preg_match('#(?:(?:tcp|tls)://)?([^:?]+)(?:\:(\d+))?(?<options>\?.+)?#', $this->_config['save_path'], $matches))
+		{
+			$save_path = array(
+				'host'    => $matches[1],
+				'port'    => empty($matches[2]) ? NULL : $matches[2],
+				'timeout' => NULL // We always pass this to Redis::connect(), so it needs to exist
+			);
+		}
+		else
+		{
+			log_message('error', 'Session: Invalid Redis save path format: '.$this->_config['save_path']);
+		}
+
+		if (isset($save_path))
+		{
+			if (isset($matches['options']))
+			{
+				$save_path['password'] = preg_match('#auth=([^\s&]+)#', $matches['options'], $match) ? $match[1] : NULL;
+				$save_path['database'] = preg_match('#database=(\d+)#', $matches['options'], $match) ? (int) $match[1] : NULL;
+				$save_path['timeout']  = preg_match('#timeout=(\d+\.\d+)#', $matches['options'], $match) ? (float) $match[1] : NULL;
+
+				preg_match('#prefix=([^\s&]+)#', $matches['options'], $match) && $this->_key_prefix = $match[1];
+			}
+
+			$this->_config['save_path'] = $save_path;
+
+			if ($this->_config['match_ip'] === TRUE)
+			{
+				$this->_key_prefix .= $_SERVER['REMOTE_ADDR'].':';
+			}
+		}
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Open
+	 *
+	 * Sanitizes save_path and initializes connection.
+	 *
+	 * @param	string	$save_path	Server path
+	 * @param	string	$name		Session cookie name, unused
+	 * @return	bool
+	 */
+	public function open($save_path, $name)
+	{
+		if (empty($this->_config['save_path']))
+		{
+			return $this->_failure;
+		}
+
+		$redis = new Redis();
+		$connected = isset($this->_config['save_path']['path'])
+			? $redis->connect($this->_config['save_path']['path'])
+			: $redis->connect(
+				$this->_config['save_path']['host'],
+				$this->_config['save_path']['port'],
+				$this->_config['save_path']['timeout']
+			);
+
+		if ($connected)
+		{
+			if (isset($this->_config['save_path']['password']) && ! $redis->auth($this->_config['save_path']['password']))
+			{
+				log_message('error', 'Session: Unable to authenticate to Redis instance.');
+			}
+			elseif (isset($this->_config['save_path']['database']) && ! $redis->select($this->_config['save_path']['database']))
+			{
+				log_message('error', 'Session: Unable to select Redis database with index '.$this->_config['save_path']['database']);
+			}
+			else
+			{
+				$this->_redis = $redis;
+				$this->php5_validate_id();
+				return $this->_success;
+			}
+		}
+		else
+		{
+			$this->_redis = $redis;
+			$this->php5_validate_id();
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Read
+	 *
+	 * Reads session data and acquires a lock
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	string	Serialized session data
+	 */
+	public function read($session_id)
+	{
+		if (isset($this->_redis) && $this->_get_lock($session_id))
+		{
+			// Needed by write() to detect session_regenerate_id() calls
+			$this->_session_id = $session_id;
+
+			$session_data = $this->_redis->get($this->_key_prefix.$session_id);
+
+			is_string($session_data)
+				? $this->_key_exists = TRUE
+				: $session_data = '';
+
+			$this->_fingerprint = md5($session_data);
+			return $session_data;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Write
+	 *
+	 * Writes (create / update) session data
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @param	string	$session_data	Serialized session data
+	 * @return	bool
+	 */
+	public function write($session_id, $session_data)
+	{
+		if ( ! isset($this->_redis, $this->_lock_key))
+		{
+			return $this->_failure;
+		}
+		// Was the ID regenerated?
+		elseif ($session_id !== $this->_session_id)
+		{
+			if ( ! $this->_release_lock() OR ! $this->_get_lock($session_id))
+			{
+				return $this->_failure;
+			}
+
+			$this->_key_exists = FALSE;
+			$this->_session_id = $session_id;
+		}
+
+		$this->_redis->{$this->_setTimeout_name}($this->_lock_key, 300);
+		if ($this->_fingerprint !== ($fingerprint = md5($session_data)) OR $this->_key_exists === FALSE)
+		{
+			if ($this->_redis->set($this->_key_prefix.$session_id, $session_data, $this->_config['expiration']))
+			{
+				$this->_fingerprint = $fingerprint;
+				$this->_key_exists = TRUE;
+				return $this->_success;
+			}
+
+			return $this->_failure;
+		}
+
+		return ($this->_redis->{$this->_setTimeout_name}($this->_key_prefix.$session_id, $this->_config['expiration']))
+			? $this->_success
+			: $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Close
+	 *
+	 * Releases locks and closes connection.
+	 *
+	 * @return	bool
+	 */
+	public function close()
+	{
+		if (isset($this->_redis))
+		{
+			try {
+				if ($this->_redis->ping() === $this->_ping_success)
+				{
+					$this->_release_lock();
+					if ($this->_redis->close() === FALSE)
+					{
+						return $this->_failure;
+					}
+				}
+			}
+			catch (RedisException $e)
+			{
+				log_message('error', 'Session: Got RedisException on close(): '.$e->getMessage());
+			}
+
+			$this->_redis = NULL;
+			return $this->_success;
+		}
+
+		return $this->_success;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Destroy
+	 *
+	 * Destroys the current session.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	public function destroy($session_id)
+	{
+		if (isset($this->_redis, $this->_lock_key))
+		{
+			if (($result = $this->_redis->{$this->_delete_name}($this->_key_prefix.$session_id)) !== 1)
+			{
+				log_message('debug', 'Session: Redis::'.$this->_delete_name.'() expected to return 1, got '.var_export($result, TRUE).' instead.');
+			}
+
+			$this->_cookie_destroy();
+			return $this->_success;
+		}
+
+		return $this->_failure;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Garbage Collector
+	 *
+	 * Deletes expired sessions
+	 *
+	 * @param	int 	$maxlifetime	Maximum lifetime of sessions
+	 * @return	bool
+	 */
+	public function gc($maxlifetime)
+	{
+		// Not necessary, Redis takes care of that.
+		return $this->_success;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate ID
+	 *
+	 * Checks whether a session ID record exists server-side,
+	 * to enforce session.use_strict_mode.
+	 *
+	 * @param	string	$id
+	 * @return	bool
+	 */
+	public function validateSessionId($id)
+	{
+		return (bool) $this->_redis->exists($this->_key_prefix.$id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get lock
+	 *
+	 * Acquires an (emulated) lock.
+	 *
+	 * @param	string	$session_id	Session ID
+	 * @return	bool
+	 */
+	protected function _get_lock($session_id)
+	{
+		// PHP 7 reuses the SessionHandler object on regeneration,
+		// so we need to check here if the lock key is for the
+		// correct session ID.
+		if ($this->_lock_key === $this->_key_prefix.$session_id.':lock')
+		{
+			return $this->_redis->{$this->_setTimeout_name}($this->_lock_key, 300);
+		}
+
+		// 30 attempts to obtain a lock, in case another request already has it
+		$lock_key = $this->_key_prefix.$session_id.':lock';
+		$attempt = 0;
+		do
+		{
+			if (($ttl = $this->_redis->ttl($lock_key)) > 0)
+			{
+				sleep(1);
+				continue;
+			}
+
+			if ($ttl === -2 && ! $this->_redis->set($lock_key, time(), array('nx', 'ex' => 300)))
+			{
+				// Sleep for 1s to wait for lock releases.
+				sleep(1);
+				continue;
+			}
+			elseif ( ! $this->_redis->setex($lock_key, 300, time()))
+			{
+				log_message('error', 'Session: Error while trying to obtain lock for '.$this->_key_prefix.$session_id);
+				return FALSE;
+			}
+
+			$this->_lock_key = $lock_key;
+			break;
+		}
+		while (++$attempt < 30);
+
+		if ($attempt === 30)
+		{
+			log_message('error', 'Session: Unable to obtain lock for '.$this->_key_prefix.$session_id.' after 30 attempts, aborting.');
+			return FALSE;
+		}
+		elseif ($ttl === -1)
+		{
+			log_message('debug', 'Session: Lock for '.$this->_key_prefix.$session_id.' had no TTL, overriding.');
+		}
+
+		$this->_lock = TRUE;
+		return TRUE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Release lock
+	 *
+	 * Releases a previously acquired lock
+	 *
+	 * @return	bool
+	 */
+	protected function _release_lock()
+	{
+		if (isset($this->_redis, $this->_lock_key) && $this->_lock)
+		{
+			if ( ! $this->_redis->{$this->_delete_name}($this->_lock_key))
+			{
+				log_message('error', 'Session: Error while trying to free lock for '.$this->_lock_key);
+				return FALSE;
+			}
+
+			$this->_lock_key = NULL;
+			$this->_lock = FALSE;
+		}
+
+		return TRUE;
+	}
+
+}
diff --git a/system/libraries/Session/drivers/index.html b/system/libraries/Session/drivers/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/libraries/Session/drivers/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/libraries/Session/index.html b/system/libraries/Session/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/libraries/Session/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>
diff --git a/system/libraries/Table.php b/system/libraries/Table.php
new file mode 100644
index 00000000..98258b63
--- /dev/null
+++ b/system/libraries/Table.php
@@ -0,0 +1,539 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.1
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * HTML Table Generating Class
+ *
+ * Lets you create tables manually or from database result objects, or arrays.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	HTML Tables
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/table.html
+ */
+class CI_Table {
+
+	/**
+	 * Data for table rows
+	 *
+	 * @var array
+	 */
+	public $rows		= array();
+
+	/**
+	 * Data for table heading
+	 *
+	 * @var array
+	 */
+	public $heading		= array();
+
+	/**
+	 * Whether or not to automatically create the table header
+	 *
+	 * @var bool
+	 */
+	public $auto_heading	= TRUE;
+
+	/**
+	 * Table caption
+	 *
+	 * @var string
+	 */
+	public $caption		= NULL;
+
+	/**
+	 * Table layout template
+	 *
+	 * @var array
+	 */
+	public $template	= NULL;
+
+	/**
+	 * Newline setting
+	 *
+	 * @var string
+	 */
+	public $newline		= "\n";
+
+	/**
+	 * Contents of empty cells
+	 *
+	 * @var string
+	 */
+	public $empty_cells	= '';
+
+	/**
+	 * Callback for custom table layout
+	 *
+	 * @var function
+	 */
+	public $function	= NULL;
+
+	/**
+	 * Set the template from the table config file if it exists
+	 *
+	 * @param	array	$config	(default: array())
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		// initialize config
+		foreach ($config as $key => $val)
+		{
+			$this->template[$key] = $val;
+		}
+
+		log_message('info', 'Table Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the template
+	 *
+	 * @param	array	$template
+	 * @return	bool
+	 */
+	public function set_template($template)
+	{
+		if ( ! is_array($template))
+		{
+			return FALSE;
+		}
+
+		$this->template = $template;
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the table heading
+	 *
+	 * Can be passed as an array or discreet params
+	 *
+	 * @param	mixed
+	 * @return	CI_Table
+	 */
+	public function set_heading($args = array())
+	{
+		$this->heading = $this->_prep_args(func_get_args());
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set columns. Takes a one-dimensional array as input and creates
+	 * a multi-dimensional array with a depth equal to the number of
+	 * columns. This allows a single array with many elements to be
+	 * displayed in a table that has a fixed column count.
+	 *
+	 * @param	array	$array
+	 * @param	int	$col_limit
+	 * @return	array
+	 */
+	public function make_columns($array = array(), $col_limit = 0)
+	{
+		if ( ! is_array($array) OR count($array) === 0 OR ! is_int($col_limit))
+		{
+			return FALSE;
+		}
+
+		// Turn off the auto-heading feature since it's doubtful we
+		// will want headings from a one-dimensional array
+		$this->auto_heading = FALSE;
+
+		if ($col_limit === 0)
+		{
+			return $array;
+		}
+
+		$new = array();
+		do
+		{
+			$temp = array_splice($array, 0, $col_limit);
+
+			if (count($temp) < $col_limit)
+			{
+				for ($i = count($temp); $i < $col_limit; $i++)
+				{
+					$temp[] = '&nbsp;';
+				}
+			}
+
+			$new[] = $temp;
+		}
+		while (count($array) > 0);
+
+		return $new;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set "empty" cells
+	 *
+	 * Can be passed as an array or discreet params
+	 *
+	 * @param	mixed	$value
+	 * @return	CI_Table
+	 */
+	public function set_empty($value)
+	{
+		$this->empty_cells = $value;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add a table row
+	 *
+	 * Can be passed as an array or discreet params
+	 *
+	 * @param	mixed
+	 * @return	CI_Table
+	 */
+	public function add_row($args = array())
+	{
+		$this->rows[] = $this->_prep_args(func_get_args());
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep Args
+	 *
+	 * Ensures a standard associative array format for all cell data
+	 *
+	 * @param	array
+	 * @return	array
+	 */
+	protected function _prep_args($args)
+	{
+		// If there is no $args[0], skip this and treat as an associative array
+		// This can happen if there is only a single key, for example this is passed to table->generate
+		// array(array('foo'=>'bar'))
+		if (isset($args[0]) && count($args) === 1 && is_array($args[0]) && ! isset($args[0]['data']))
+		{
+			$args = $args[0];
+		}
+
+		foreach ($args as $key => $val)
+		{
+			is_array($val) OR $args[$key] = array('data' => $val);
+		}
+
+		return $args;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add a table caption
+	 *
+	 * @param	string	$caption
+	 * @return	CI_Table
+	 */
+	public function set_caption($caption)
+	{
+		$this->caption = $caption;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate the table
+	 *
+	 * @param	mixed	$table_data
+	 * @return	string
+	 */
+	public function generate($table_data = NULL)
+	{
+		// The table data can optionally be passed to this function
+		// either as a database result object or an array
+		if ( ! empty($table_data))
+		{
+			if ($table_data instanceof CI_DB_result)
+			{
+				$this->_set_from_db_result($table_data);
+			}
+			elseif (is_array($table_data))
+			{
+				$this->_set_from_array($table_data);
+			}
+		}
+
+		// Is there anything to display? No? Smite them!
+		if (empty($this->heading) && empty($this->rows))
+		{
+			return 'Undefined table data';
+		}
+
+		// Compile and validate the template date
+		$this->_compile_template();
+
+		// Validate a possibly existing custom cell manipulation function
+		if (isset($this->function) && ! is_callable($this->function))
+		{
+			$this->function = NULL;
+		}
+
+		// Build the table!
+
+		$out = $this->template['table_open'].$this->newline;
+
+		// Add any caption here
+		if ($this->caption)
+		{
+			$out .= '<caption>'.$this->caption.'</caption>'.$this->newline;
+		}
+
+		// Is there a table heading to display?
+		if ( ! empty($this->heading))
+		{
+			$out .= $this->template['thead_open'].$this->newline.$this->template['heading_row_start'].$this->newline;
+
+			foreach ($this->heading as $heading)
+			{
+				$temp = $this->template['heading_cell_start'];
+
+				foreach ($heading as $key => $val)
+				{
+					if ($key !== 'data')
+					{
+						$temp = str_replace('<th', '<th '.$key.'="'.$val.'"', $temp);
+					}
+				}
+
+				$out .= $temp.(isset($heading['data']) ? $heading['data'] : '').$this->template['heading_cell_end'];
+			}
+
+			$out .= $this->template['heading_row_end'].$this->newline.$this->template['thead_close'].$this->newline;
+		}
+
+		// Build the table rows
+		if ( ! empty($this->rows))
+		{
+			$out .= $this->template['tbody_open'].$this->newline;
+
+			$i = 1;
+			foreach ($this->rows as $row)
+			{
+				if ( ! is_array($row))
+				{
+					break;
+				}
+
+				// We use modulus to alternate the row colors
+				$name = fmod($i++, 2) ? '' : 'alt_';
+
+				$out .= $this->template['row_'.$name.'start'].$this->newline;
+
+				foreach ($row as $cell)
+				{
+					$temp = $this->template['cell_'.$name.'start'];
+
+					foreach ($cell as $key => $val)
+					{
+						if ($key !== 'data')
+						{
+							$temp = str_replace('<td', '<td '.$key.'="'.$val.'"', $temp);
+						}
+					}
+
+					$cell = isset($cell['data']) ? $cell['data'] : '';
+					$out .= $temp;
+
+					if ($cell === '' OR $cell === NULL)
+					{
+						$out .= $this->empty_cells;
+					}
+					elseif (isset($this->function))
+					{
+						$out .= call_user_func($this->function, $cell);
+					}
+					else
+					{
+						$out .= $cell;
+					}
+
+					$out .= $this->template['cell_'.$name.'end'];
+				}
+
+				$out .= $this->template['row_'.$name.'end'].$this->newline;
+			}
+
+			$out .= $this->template['tbody_close'].$this->newline;
+		}
+
+		$out .= $this->template['table_close'];
+
+		// Clear table class properties before generating the table
+		$this->clear();
+
+		return $out;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Clears the table arrays.  Useful if multiple tables are being generated
+	 *
+	 * @return	CI_Table
+	 */
+	public function clear()
+	{
+		$this->rows = array();
+		$this->heading = array();
+		$this->auto_heading = TRUE;
+		$this->caption = NULL;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set table data from a database result object
+	 *
+	 * @param	CI_DB_result	$object	Database result object
+	 * @return	void
+	 */
+	protected function _set_from_db_result($object)
+	{
+		// First generate the headings from the table column names
+		if ($this->auto_heading === TRUE && empty($this->heading))
+		{
+			$this->heading = $this->_prep_args($object->list_fields());
+		}
+
+		foreach ($object->result_array() as $row)
+		{
+			$this->rows[] = $this->_prep_args($row);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set table data from an array
+	 *
+	 * @param	array	$data
+	 * @return	void
+	 */
+	protected function _set_from_array($data)
+	{
+		if ($this->auto_heading === TRUE && empty($this->heading))
+		{
+			$this->heading = $this->_prep_args(array_shift($data));
+		}
+
+		foreach ($data as &$row)
+		{
+			$this->rows[] = $this->_prep_args($row);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile Template
+	 *
+	 * @return	void
+	 */
+	protected function _compile_template()
+	{
+		if ($this->template === NULL)
+		{
+			$this->template = $this->_default_template();
+			return;
+		}
+
+		$this->temp = $this->_default_template();
+		foreach (array('table_open', 'thead_open', 'thead_close', 'heading_row_start', 'heading_row_end', 'heading_cell_start', 'heading_cell_end', 'tbody_open', 'tbody_close', 'row_start', 'row_end', 'cell_start', 'cell_end', 'row_alt_start', 'row_alt_end', 'cell_alt_start', 'cell_alt_end', 'table_close') as $val)
+		{
+			if ( ! isset($this->template[$val]))
+			{
+				$this->template[$val] = $this->temp[$val];
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Default Template
+	 *
+	 * @return	array
+	 */
+	protected function _default_template()
+	{
+		return array(
+			'table_open'		=> '<table border="0" cellpadding="4" cellspacing="0">',
+
+			'thead_open'		=> '<thead>',
+			'thead_close'		=> '</thead>',
+
+			'heading_row_start'	=> '<tr>',
+			'heading_row_end'	=> '</tr>',
+			'heading_cell_start'	=> '<th>',
+			'heading_cell_end'	=> '</th>',
+
+			'tbody_open'		=> '<tbody>',
+			'tbody_close'		=> '</tbody>',
+
+			'row_start'		=> '<tr>',
+			'row_end'		=> '</tr>',
+			'cell_start'		=> '<td>',
+			'cell_end'		=> '</td>',
+
+			'row_alt_start'		=> '<tr>',
+			'row_alt_end'		=> '</tr>',
+			'cell_alt_start'	=> '<td>',
+			'cell_alt_end'		=> '</td>',
+
+			'table_close'		=> '</table>'
+		);
+	}
+
+}
diff --git a/system/libraries/Trackback.php b/system/libraries/Trackback.php
new file mode 100644
index 00000000..75ccae8f
--- /dev/null
+++ b/system/libraries/Trackback.php
@@ -0,0 +1,556 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Trackback Class
+ *
+ * Trackback Sending/Receiving Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Trackbacks
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/trackback.html
+ */
+class CI_Trackback {
+
+	/**
+	 * Character set
+	 *
+	 * @var	string
+	 */
+	public $charset = 'UTF-8';
+
+	/**
+	 * Trackback data
+	 *
+	 * @var	array
+	 */
+	public $data = array(
+		'url' => '',
+		'title' => '',
+		'excerpt' => '',
+		'blog_name' => '',
+		'charset' => ''
+	);
+
+	/**
+	 * Convert ASCII flag
+	 *
+	 * Whether to convert high-ASCII and MS Word
+	 * characters to HTML entities.
+	 *
+	 * @var	bool
+	 */
+	public $convert_ascii = TRUE;
+
+	/**
+	 * Response
+	 *
+	 * @var	string
+	 */
+	public $response = '';
+
+	/**
+	 * Error messages list
+	 *
+	 * @var	string[]
+	 */
+	public $error_msg = array();
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		log_message('info', 'Trackback Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send Trackback
+	 *
+	 * @param	array
+	 * @return	bool
+	 */
+	public function send($tb_data)
+	{
+		if ( ! is_array($tb_data))
+		{
+			$this->set_error('The send() method must be passed an array');
+			return FALSE;
+		}
+
+		// Pre-process the Trackback Data
+		foreach (array('url', 'title', 'excerpt', 'blog_name', 'ping_url') as $item)
+		{
+			if ( ! isset($tb_data[$item]))
+			{
+				$this->set_error('Required item missing: '.$item);
+				return FALSE;
+			}
+
+			switch ($item)
+			{
+				case 'ping_url':
+					$$item = $this->extract_urls($tb_data[$item]);
+					break;
+				case 'excerpt':
+					$$item = $this->limit_characters($this->convert_xml(strip_tags(stripslashes($tb_data[$item]))));
+					break;
+				case 'url':
+					$$item = str_replace('&#45;', '-', $this->convert_xml(strip_tags(stripslashes($tb_data[$item]))));
+					break;
+				default:
+					$$item = $this->convert_xml(strip_tags(stripslashes($tb_data[$item])));
+					break;
+			}
+
+			// Convert High ASCII Characters
+			if ($this->convert_ascii === TRUE && in_array($item, array('excerpt', 'title', 'blog_name'), TRUE))
+			{
+				$$item = $this->convert_ascii($$item);
+			}
+		}
+
+		// Build the Trackback data string
+		$charset = isset($tb_data['charset']) ? $tb_data['charset'] : $this->charset;
+
+		$data = 'url='.rawurlencode($url).'&title='.rawurlencode($title).'&blog_name='.rawurlencode($blog_name)
+			.'&excerpt='.rawurlencode($excerpt).'&charset='.rawurlencode($charset);
+
+		// Send Trackback(s)
+		$return = TRUE;
+		if (count($ping_url) > 0)
+		{
+			foreach ($ping_url as $url)
+			{
+				if ($this->process($url, $data) === FALSE)
+				{
+					$return = FALSE;
+				}
+			}
+		}
+
+		return $return;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Receive Trackback  Data
+	 *
+	 * This function simply validates the incoming TB data.
+	 * It returns FALSE on failure and TRUE on success.
+	 * If the data is valid it is set to the $this->data array
+	 * so that it can be inserted into a database.
+	 *
+	 * @return	bool
+	 */
+	public function receive()
+	{
+		foreach (array('url', 'title', 'blog_name', 'excerpt') as $val)
+		{
+			if (empty($_POST[$val]))
+			{
+				$this->set_error('The following required POST variable is missing: '.$val);
+				return FALSE;
+			}
+
+			$this->data['charset'] = isset($_POST['charset']) ? strtoupper(trim($_POST['charset'])) : 'auto';
+
+			if ($val !== 'url' && MB_ENABLED === TRUE)
+			{
+				if (MB_ENABLED === TRUE)
+				{
+					$_POST[$val] = mb_convert_encoding($_POST[$val], $this->charset, $this->data['charset']);
+				}
+				elseif (ICONV_ENABLED === TRUE)
+				{
+					$_POST[$val] = @iconv($this->data['charset'], $this->charset.'//IGNORE', $_POST[$val]);
+				}
+			}
+
+			$_POST[$val] = ($val !== 'url') ? $this->convert_xml(strip_tags($_POST[$val])) : strip_tags($_POST[$val]);
+
+			if ($val === 'excerpt')
+			{
+				$_POST['excerpt'] = $this->limit_characters($_POST['excerpt']);
+			}
+
+			$this->data[$val] = $_POST[$val];
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send Trackback Error Message
+	 *
+	 * Allows custom errors to be set. By default it
+	 * sends the "incomplete information" error, as that's
+	 * the most common one.
+	 *
+	 * @param	string
+	 * @return	void
+	 */
+	public function send_error($message = 'Incomplete Information')
+	{
+		exit('<?xml version="1.0" encoding="utf-8"?'.">\n<response>\n<error>1</error>\n<message>".$message."</message>\n</response>");
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send Trackback Success Message
+	 *
+	 * This should be called when a trackback has been
+	 * successfully received and inserted.
+	 *
+	 * @return	void
+	 */
+	public function send_success()
+	{
+		exit('<?xml version="1.0" encoding="utf-8"?'.">\n<response>\n<error>0</error>\n</response>");
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch a particular item
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function data($item)
+	{
+		return isset($this->data[$item]) ? $this->data[$item] : '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process Trackback
+	 *
+	 * Opens a socket connection and passes the data to
+	 * the server. Returns TRUE on success, FALSE on failure
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
+	public function process($url, $data)
+	{
+		$target = parse_url($url);
+
+		// Open the socket
+		if ( ! $fp = @fsockopen($target['host'], 80))
+		{
+			$this->set_error('Invalid Connection: '.$url);
+			return FALSE;
+		}
+
+		// Build the path
+		$path = isset($target['path']) ? $target['path'] : $url;
+		empty($target['query']) OR $path .= '?'.$target['query'];
+
+		// Add the Trackback ID to the data string
+		if ($id = $this->get_id($url))
+		{
+			$data = 'tb_id='.$id.'&'.$data;
+		}
+
+		// Transfer the data
+		fputs($fp, 'POST '.$path." HTTP/1.0\r\n");
+		fputs($fp, 'Host: '.$target['host']."\r\n");
+		fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
+		fputs($fp, 'Content-length: '.strlen($data)."\r\n");
+		fputs($fp, "Connection: close\r\n\r\n");
+		fputs($fp, $data);
+
+		// Was it successful?
+
+		$this->response = '';
+		while ( ! feof($fp))
+		{
+			$this->response .= fgets($fp, 128);
+		}
+		@fclose($fp);
+
+		if (stripos($this->response, '<error>0</error>') === FALSE)
+		{
+			$message = preg_match('/<message>(.*?)<\/message>/is', $this->response, $match)
+				? trim($match[1])
+				: 'An unknown error was encountered';
+			$this->set_error($message);
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Extract Trackback URLs
+	 *
+	 * This function lets multiple trackbacks be sent.
+	 * It takes a string of URLs (separated by comma or
+	 * space) and puts each URL into an array
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function extract_urls($urls)
+	{
+		// Remove the pesky white space and replace with a comma, then replace doubles.
+		$urls = str_replace(',,', ',', preg_replace('/\s*(\S+)\s*/', '\\1,', $urls));
+
+		// Break into an array via commas and remove duplicates
+		$urls = array_unique(preg_split('/[,]/', rtrim($urls, ',')));
+
+		array_walk($urls, array($this, 'validate_url'));
+		return $urls;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate URL
+	 *
+	 * Simply adds "http://" if missing
+	 *
+	 * @param	string
+	 * @return	void
+	 */
+	public function validate_url(&$url)
+	{
+		$url = trim($url);
+
+		if (stripos($url, 'http') !== 0)
+		{
+			$url = 'http://'.$url;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Find the Trackback URL's ID
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function get_id($url)
+	{
+		$tb_id = '';
+
+		if (strpos($url, '?') !== FALSE)
+		{
+			$tb_array = explode('/', $url);
+			$tb_end   = $tb_array[count($tb_array)-1];
+
+			if ( ! is_numeric($tb_end))
+			{
+				$tb_end  = $tb_array[count($tb_array)-2];
+			}
+
+			$tb_array = explode('=', $tb_end);
+			$tb_id	= $tb_array[count($tb_array)-1];
+		}
+		else
+		{
+			$url = rtrim($url, '/');
+
+			$tb_array = explode('/', $url);
+			$tb_id	= $tb_array[count($tb_array)-1];
+
+			if ( ! is_numeric($tb_id))
+			{
+				$tb_id = $tb_array[count($tb_array)-2];
+			}
+		}
+
+		return ctype_digit((string) $tb_id) ? $tb_id : FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Convert Reserved XML characters to Entities
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function convert_xml($str)
+	{
+		$temp = '__TEMP_AMPERSANDS__';
+
+		$str = preg_replace(array('/&#(\d+);/', '/&(\w+);/'), $temp.'\\1;', $str);
+
+		$str = str_replace(array('&', '<', '>', '"', "'", '-'),
+					array('&amp;', '&lt;', '&gt;', '&quot;', '&#39;', '&#45;'),
+					$str);
+
+		return preg_replace(array('/'.$temp.'(\d+);/', '/'.$temp.'(\w+);/'), array('&#\\1;', '&\\1;'), $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Character limiter
+	 *
+	 * Limits the string based on the character count. Will preserve complete words.
+	 *
+	 * @param	string
+	 * @param	int
+	 * @param	string
+	 * @return	string
+	 */
+	public function limit_characters($str, $n = 500, $end_char = '&#8230;')
+	{
+		if (strlen($str) < $n)
+		{
+			return $str;
+		}
+
+		$str = preg_replace('/\s+/', ' ', str_replace(array("\r\n", "\r", "\n"), ' ', $str));
+
+		if (strlen($str) <= $n)
+		{
+			return $str;
+		}
+
+		$out = '';
+		foreach (explode(' ', trim($str)) as $val)
+		{
+			$out .= $val.' ';
+			if (strlen($out) >= $n)
+			{
+				return rtrim($out).$end_char;
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * High ASCII to Entities
+	 *
+	 * Converts Hight ascii text and MS Word special chars
+	 * to character entities
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function convert_ascii($str)
+	{
+		$count	= 1;
+		$out	= '';
+		$temp	= array();
+
+		for ($i = 0, $s = strlen($str); $i < $s; $i++)
+		{
+			$ordinal = ord($str[$i]);
+
+			if ($ordinal < 128)
+			{
+				$out .= $str[$i];
+			}
+			else
+			{
+				if (count($temp) === 0)
+				{
+					$count = ($ordinal < 224) ? 2 : 3;
+				}
+
+				$temp[] = $ordinal;
+
+				if (count($temp) === $count)
+				{
+					$number = ($count === 3)
+						? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64)
+						: (($temp[0] % 32) * 64) + ($temp[1] % 64);
+
+					$out .= '&#'.$number.';';
+					$count = 1;
+					$temp = array();
+				}
+			}
+		}
+
+		return $out;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set error message
+	 *
+	 * @param	string
+	 * @return	void
+	 */
+	public function set_error($msg)
+	{
+		log_message('error', $msg);
+		$this->error_msg[] = $msg;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show error messages
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
+	public function display_errors($open = '<p>', $close = '</p>')
+	{
+		return (count($this->error_msg) > 0) ? $open.implode($close.$open, $this->error_msg).$close : '';
+	}
+
+}
diff --git a/system/libraries/Typography.php b/system/libraries/Typography.php
new file mode 100644
index 00000000..d919d484
--- /dev/null
+++ b/system/libraries/Typography.php
@@ -0,0 +1,424 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Typography Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Helpers
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/typography.html
+ */
+class CI_Typography {
+
+	/**
+	 * Block level elements that should not be wrapped inside <p> tags
+	 *
+	 * @var string
+	 */
+	public $block_elements = 'address|blockquote|div|dl|fieldset|form|h\d|hr|noscript|object|ol|p|pre|script|table|ul';
+
+	/**
+	 * Elements that should not have <p> and <br /> tags within them.
+	 *
+	 * @var string
+	 */
+	public $skip_elements	= 'p|pre|ol|ul|dl|object|table|h\d';
+
+	/**
+	 * Tags we want the parser to completely ignore when splitting the string.
+	 *
+	 * @var string
+	 */
+	public $inline_elements = 'a|abbr|acronym|b|bdo|big|br|button|cite|code|del|dfn|em|i|img|ins|input|label|map|kbd|q|samp|select|small|span|strong|sub|sup|textarea|tt|var';
+
+	/**
+	 * array of block level elements that require inner content to be within another block level element
+	 *
+	 * @var array
+	 */
+	public $inner_block_required = array('blockquote');
+
+	/**
+	 * the last block element parsed
+	 *
+	 * @var string
+	 */
+	public $last_block_element = '';
+
+	/**
+	 * whether or not to protect quotes within { curly braces }
+	 *
+	 * @var bool
+	 */
+	public $protect_braced_quotes = FALSE;
+
+	/**
+	 * Auto Typography
+	 *
+	 * This function converts text, making it typographically correct:
+	 *	- Converts double spaces into paragraphs.
+	 *	- Converts single line breaks into <br /> tags
+	 *	- Converts single and double quotes into correctly facing curly quote entities.
+	 *	- Converts three dots into ellipsis.
+	 *	- Converts double dashes into em-dashes.
+	 *  - Converts two spaces into entities
+	 *
+	 * @param	string
+	 * @param	bool	whether to reduce more then two consecutive newlines to two
+	 * @return	string
+	 */
+	public function auto_typography($str, $reduce_linebreaks = FALSE)
+	{
+		if ($str === '')
+		{
+			return '';
+		}
+
+		// Standardize Newlines to make matching easier
+		if (strpos($str, "\r") !== FALSE)
+		{
+			$str = str_replace(array("\r\n", "\r"), "\n", $str);
+		}
+
+		// Reduce line breaks.  If there are more than two consecutive linebreaks
+		// we'll compress them down to a maximum of two since there's no benefit to more.
+		if ($reduce_linebreaks === TRUE)
+		{
+			$str = preg_replace("/\n\n+/", "\n\n", $str);
+		}
+
+		// HTML comment tags don't conform to patterns of normal tags, so pull them out separately, only if needed
+		$html_comments = array();
+		if (strpos($str, '<!--') !== FALSE && preg_match_all('#(<!\-\-.*?\-\->)#s', $str, $matches))
+		{
+			for ($i = 0, $total = count($matches[0]); $i < $total; $i++)
+			{
+				$html_comments[] = $matches[0][$i];
+				$str = str_replace($matches[0][$i], '{@HC'.$i.'}', $str);
+			}
+		}
+
+		// match and yank <pre> tags if they exist.  It's cheaper to do this separately since most content will
+		// not contain <pre> tags, and it keeps the PCRE patterns below simpler and faster
+		if (strpos($str, '<pre') !== FALSE)
+		{
+			$str = preg_replace_callback('#<pre.*?>.*?</pre>#si', array($this, '_protect_characters'), $str);
+		}
+
+		// Convert quotes within tags to temporary markers.
+		$str = preg_replace_callback('#<.+?>#si', array($this, '_protect_characters'), $str);
+
+		// Do the same with braces if necessary
+		if ($this->protect_braced_quotes === TRUE)
+		{
+			$str = preg_replace_callback('#\{.+?\}#si', array($this, '_protect_characters'), $str);
+		}
+
+		// Convert "ignore" tags to temporary marker.  The parser splits out the string at every tag
+		// it encounters.  Certain inline tags, like image tags, links, span tags, etc. will be
+		// adversely affected if they are split out so we'll convert the opening bracket < temporarily to: {@TAG}
+		$str = preg_replace('#<(/*)('.$this->inline_elements.')([ >])#i', '{@TAG}\\1\\2\\3', $str);
+
+		/* Split the string at every tag. This expression creates an array with this prototype:
+		 *
+		 *	[array]
+		 *	{
+		 *		[0] = <opening tag>
+		 *		[1] = Content...
+		 *		[2] = <closing tag>
+		 *		Etc...
+		 *	}
+		 */
+		$chunks = preg_split('/(<(?:[^<>]+(?:"[^"]*"|\'[^\']*\')?)+>)/', $str, -1, PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_NO_EMPTY);
+
+		// Build our finalized string.  We cycle through the array, skipping tags, and processing the contained text
+		$str = '';
+		$process = TRUE;
+
+		for ($i = 0, $c = count($chunks) - 1; $i <= $c; $i++)
+		{
+			// Are we dealing with a tag? If so, we'll skip the processing for this cycle.
+			// Well also set the "process" flag which allows us to skip <pre> tags and a few other things.
+			if (preg_match('#<(/*)('.$this->block_elements.').*?>#', $chunks[$i], $match))
+			{
+				if (preg_match('#'.$this->skip_elements.'#', $match[2]))
+				{
+					$process = ($match[1] === '/');
+				}
+
+				if ($match[1] === '')
+				{
+					$this->last_block_element = $match[2];
+				}
+
+				$str .= $chunks[$i];
+				continue;
+			}
+
+			if ($process === FALSE)
+			{
+				$str .= $chunks[$i];
+				continue;
+			}
+
+			//  Force a newline to make sure end tags get processed by _format_newlines()
+			if ($i === $c)
+			{
+				$chunks[$i] .= "\n";
+			}
+
+			//  Convert Newlines into <p> and <br /> tags
+			$str .= $this->_format_newlines($chunks[$i]);
+		}
+
+		// No opening block level tag? Add it if needed.
+		if ( ! preg_match('/^\s*<(?:'.$this->block_elements.')/i', $str))
+		{
+			$str = preg_replace('/^(.*?)<('.$this->block_elements.')/i', '<p>$1</p><$2', $str);
+		}
+
+		// Convert quotes, elipsis, em-dashes, non-breaking spaces, and ampersands
+		$str = $this->format_characters($str);
+
+		// restore HTML comments
+		for ($i = 0, $total = count($html_comments); $i < $total; $i++)
+		{
+			// remove surrounding paragraph tags, but only if there's an opening paragraph tag
+			// otherwise HTML comments at the ends of paragraphs will have the closing tag removed
+			// if '<p>{@HC1}' then replace <p>{@HC1}</p> with the comment, else replace only {@HC1} with the comment
+			$str = preg_replace('#(?(?=<p>\{@HC'.$i.'\})<p>\{@HC'.$i.'\}(\s*</p>)|\{@HC'.$i.'\})#s', $html_comments[$i], $str);
+		}
+
+		// Final clean up
+		$table = array(
+
+						// If the user submitted their own paragraph tags within the text
+						// we will retain them instead of using our tags.
+						'/(<p[^>*?]>)<p>/'	=> '$1', // <?php BBEdit syntax coloring bug fix
+
+						// Reduce multiple instances of opening/closing paragraph tags to a single one
+						'#(</p>)+#'			=> '</p>',
+						'/(<p>\W*<p>)+/'	=> '<p>',
+
+						// Clean up stray paragraph tags that appear before block level elements
+						'#<p></p><('.$this->block_elements.')#'	=> '<$1',
+
+						// Clean up stray non-breaking spaces preceding block elements
+						'#(&nbsp;\s*)+<('.$this->block_elements.')#'	=> '  <$2',
+
+						// Replace the temporary markers we added earlier
+						'/\{@TAG\}/'		=> '<',
+						'/\{@DQ\}/'			=> '"',
+						'/\{@SQ\}/'			=> "'",
+						'/\{@DD\}/'			=> '--',
+						'/\{@NBS\}/'		=> '  ',
+
+						// An unintended consequence of the _format_newlines function is that
+						// some of the newlines get truncated, resulting in <p> tags
+						// starting immediately after <block> tags on the same line.
+						// This forces a newline after such occurrences, which looks much nicer.
+						"/><p>\n/"			=> ">\n<p>",
+
+						// Similarly, there might be cases where a closing </block> will follow
+						// a closing </p> tag, so we'll correct it by adding a newline in between
+						'#</p></#'			=> "</p>\n</"
+						);
+
+		// Do we need to reduce empty lines?
+		if ($reduce_linebreaks === TRUE)
+		{
+			$table['#<p>\n*</p>#'] = '';
+		}
+		else
+		{
+			// If we have empty paragraph tags we add a non-breaking space
+			// otherwise most browsers won't treat them as true paragraphs
+			$table['#<p></p>#'] = '<p>&nbsp;</p>';
+		}
+
+		return preg_replace(array_keys($table), $table, $str);
+
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Format Characters
+	 *
+	 * This function mainly converts double and single quotes
+	 * to curly entities, but it also converts em-dashes,
+	 * double spaces, and ampersands
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function format_characters($str)
+	{
+		static $table;
+
+		if ( ! isset($table))
+		{
+			$table = array(
+							// nested smart quotes, opening and closing
+							// note that rules for grammar (English) allow only for two levels deep
+							// and that single quotes are _supposed_ to always be on the outside
+							// but we'll accommodate both
+							// Note that in all cases, whitespace is the primary determining factor
+							// on which direction to curl, with non-word characters like punctuation
+							// being a secondary factor only after whitespace is addressed.
+							'/\'"(\s|$)/'					=> '&#8217;&#8221;$1',
+							'/(^|\s|<p>)\'"/'				=> '$1&#8216;&#8220;',
+							'/\'"(\W)/'						=> '&#8217;&#8221;$1',
+							'/(\W)\'"/'						=> '$1&#8216;&#8220;',
+							'/"\'(\s|$)/'					=> '&#8221;&#8217;$1',
+							'/(^|\s|<p>)"\'/'				=> '$1&#8220;&#8216;',
+							'/"\'(\W)/'						=> '&#8221;&#8217;$1',
+							'/(\W)"\'/'						=> '$1&#8220;&#8216;',
+
+							// single quote smart quotes
+							'/\'(\s|$)/'					=> '&#8217;$1',
+							'/(^|\s|<p>)\'/'				=> '$1&#8216;',
+							'/\'(\W)/'						=> '&#8217;$1',
+							'/(\W)\'/'						=> '$1&#8216;',
+
+							// double quote smart quotes
+							'/"(\s|$)/'						=> '&#8221;$1',
+							'/(^|\s|<p>)"/'					=> '$1&#8220;',
+							'/"(\W)/'						=> '&#8221;$1',
+							'/(\W)"/'						=> '$1&#8220;',
+
+							// apostrophes
+							"/(\w)'(\w)/"					=> '$1&#8217;$2',
+
+							// Em dash and ellipses dots
+							'/\s?\-\-\s?/'					=> '&#8212;',
+							'/(\w)\.{3}/'					=> '$1&#8230;',
+
+							// double space after sentences
+							'/(\W)  /'						=> '$1&nbsp; ',
+
+							// ampersands, if not a character entity
+							'/&(?!#?[a-zA-Z0-9]{2,};)/'		=> '&amp;'
+						);
+		}
+
+		return preg_replace(array_keys($table), $table, $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Format Newlines
+	 *
+	 * Converts newline characters into either <p> tags or <br />
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _format_newlines($str)
+	{
+		if ($str === '' OR (strpos($str, "\n") === FALSE && ! in_array($this->last_block_element, $this->inner_block_required)))
+		{
+			return $str;
+		}
+
+		// Convert two consecutive newlines to paragraphs
+		$str = str_replace("\n\n", "</p>\n\n<p>", $str);
+
+		// Convert single spaces to <br /> tags
+		$str = preg_replace("/([^\n])(\n)([^\n])/", '\\1<br />\\2\\3', $str);
+
+		// Wrap the whole enchilada in enclosing paragraphs
+		if ($str !== "\n")
+		{
+			// We trim off the right-side new line so that the closing </p> tag
+			// will be positioned immediately following the string, matching
+			// the behavior of the opening <p> tag
+			$str =  '<p>'.rtrim($str).'</p>';
+		}
+
+		// Remove empty paragraphs if they are on the first line, as this
+		// is a potential unintended consequence of the previous code
+		return preg_replace('/<p><\/p>(.*)/', '\\1', $str, 1);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Protect Characters
+	 *
+	 * Protects special characters from being formatted later
+	 * We don't want quotes converted within tags so we'll temporarily convert them to {@DQ} and {@SQ}
+	 * and we don't want double dashes converted to emdash entities, so they are marked with {@DD}
+	 * likewise double spaces are converted to {@NBS} to prevent entity conversion
+	 *
+	 * @param	array
+	 * @return	string
+	 */
+	protected function _protect_characters($match)
+	{
+		return str_replace(array("'",'"','--','  '), array('{@SQ}', '{@DQ}', '{@DD}', '{@NBS}'), $match[0]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Convert newlines to HTML line breaks except within PRE tags
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	public function nl2br_except_pre($str)
+	{
+		$newstr = '';
+		for ($ex = explode('pre>', $str), $ct = count($ex), $i = 0; $i < $ct; $i++)
+		{
+			$newstr .= (($i % 2) === 0) ? nl2br($ex[$i]) : $ex[$i];
+			if ($ct - 1 !== $i)
+			{
+				$newstr .= 'pre>';
+			}
+		}
+
+		return $newstr;
+	}
+
+}
diff --git a/system/libraries/Unit_test.php b/system/libraries/Unit_test.php
new file mode 100644
index 00000000..55e3bfcb
--- /dev/null
+++ b/system/libraries/Unit_test.php
@@ -0,0 +1,406 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.3.1
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Unit Testing Class
+ *
+ * Simple testing class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	UnitTesting
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/unit_testing.html
+ */
+class CI_Unit_test {
+
+	/**
+	 * Active flag
+	 *
+	 * @var	bool
+	 */
+	public $active = TRUE;
+
+	/**
+	 * Test results
+	 *
+	 * @var	array
+	 */
+	public $results = array();
+
+	/**
+	 * Strict comparison flag
+	 *
+	 * Whether to use === or == when comparing
+	 *
+	 * @var	bool
+	 */
+	public $strict = FALSE;
+
+	/**
+	 * Template
+	 *
+	 * @var	string
+	 */
+	protected $_template = NULL;
+
+	/**
+	 * Template rows
+	 *
+	 * @var	string
+	 */
+	protected $_template_rows = NULL;
+
+	/**
+	 * List of visible test items
+	 *
+	 * @var	array
+	 */
+	protected $_test_items_visible	= array(
+		'test_name',
+		'test_datatype',
+		'res_datatype',
+		'result',
+		'file',
+		'line',
+		'notes'
+	);
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		log_message('info', 'Unit Testing Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Run the tests
+	 *
+	 * Runs the supplied tests
+	 *
+	 * @param	array	$items
+	 * @return	void
+	 */
+	public function set_test_items($items)
+	{
+		if ( ! empty($items) && is_array($items))
+		{
+			$this->_test_items_visible = $items;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Run the tests
+	 *
+	 * Runs the supplied tests
+	 *
+	 * @param	mixed	$test
+	 * @param	mixed	$expected
+	 * @param	string	$test_name
+	 * @param	string	$notes
+	 * @return	string
+	 */
+	public function run($test, $expected = TRUE, $test_name = 'undefined', $notes = '')
+	{
+		if ($this->active === FALSE)
+		{
+			return FALSE;
+		}
+
+		if (in_array($expected, array('is_object', 'is_string', 'is_bool', 'is_true', 'is_false', 'is_int', 'is_numeric', 'is_float', 'is_double', 'is_array', 'is_null', 'is_resource'), TRUE))
+		{
+			$result = $expected($test);
+			$extype = str_replace(array('true', 'false'), 'bool', str_replace('is_', '', $expected));
+		}
+		else
+		{
+			$result = ($this->strict === TRUE) ? ($test === $expected) : ($test == $expected);
+			$extype = gettype($expected);
+		}
+
+		$back = $this->_backtrace();
+
+		$report = array (
+			'test_name'     => $test_name,
+			'test_datatype' => gettype($test),
+			'res_datatype'  => $extype,
+			'result'        => ($result === TRUE) ? 'passed' : 'failed',
+			'file'          => $back['file'],
+			'line'          => $back['line'],
+			'notes'         => $notes
+		);
+
+		$this->results[] = $report;
+
+		return $this->report($this->result(array($report)));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate a report
+	 *
+	 * Displays a table with the test data
+	 *
+	 * @param	array	 $result
+	 * @return	string
+	 */
+	public function report($result = array())
+	{
+		if (count($result) === 0)
+		{
+			$result = $this->result();
+		}
+
+		$CI =& get_instance();
+		$CI->load->language('unit_test');
+
+		$this->_parse_template();
+
+		$r = '';
+		foreach ($result as $res)
+		{
+			$table = '';
+
+			foreach ($res as $key => $val)
+			{
+				if ($key === $CI->lang->line('ut_result'))
+				{
+					if ($val === $CI->lang->line('ut_passed'))
+					{
+						$val = '<span style="color: #0C0;">'.$val.'</span>';
+					}
+					elseif ($val === $CI->lang->line('ut_failed'))
+					{
+						$val = '<span style="color: #C00;">'.$val.'</span>';
+					}
+				}
+
+				$table .= str_replace(array('{item}', '{result}'), array($key, $val), $this->_template_rows);
+			}
+
+			$r .= str_replace('{rows}', $table, $this->_template);
+		}
+
+		return $r;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Use strict comparison
+	 *
+	 * Causes the evaluation to use === rather than ==
+	 *
+	 * @param	bool	$state
+	 * @return	void
+	 */
+	public function use_strict($state = TRUE)
+	{
+		$this->strict = (bool) $state;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Make Unit testing active
+	 *
+	 * Enables/disables unit testing
+	 *
+	 * @param	bool
+	 * @return	void
+	 */
+	public function active($state = TRUE)
+	{
+		$this->active = (bool) $state;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result Array
+	 *
+	 * Returns the raw result data
+	 *
+	 * @param	array	$results
+	 * @return	array
+	 */
+	public function result($results = array())
+	{
+		$CI =& get_instance();
+		$CI->load->language('unit_test');
+
+		if (count($results) === 0)
+		{
+			$results = $this->results;
+		}
+
+		$retval = array();
+		foreach ($results as $result)
+		{
+			$temp = array();
+			foreach ($result as $key => $val)
+			{
+				if ( ! in_array($key, $this->_test_items_visible))
+				{
+					continue;
+				}
+				elseif (in_array($key, array('test_name', 'test_datatype', 'res_datatype', 'result'), TRUE))
+				{
+					if (FALSE !== ($line = $CI->lang->line(strtolower('ut_'.$val), FALSE)))
+					{
+						$val = $line;
+					}
+				}
+
+				$temp[$CI->lang->line('ut_'.$key, FALSE)] = $val;
+			}
+
+			$retval[] = $temp;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the template
+	 *
+	 * This lets us set the template to be used to display results
+	 *
+	 * @param	string
+	 * @return	void
+	 */
+	public function set_template($template)
+	{
+		$this->_template = $template;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Generate a backtrace
+	 *
+	 * This lets us show file names and line numbers
+	 *
+	 * @return	array
+	 */
+	protected function _backtrace()
+	{
+		$back = debug_backtrace();
+		return array(
+			'file' => (isset($back[1]['file']) ? $back[1]['file'] : ''),
+			'line' => (isset($back[1]['line']) ? $back[1]['line'] : '')
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Default Template
+	 *
+	 * @return	string
+	 */
+	protected function _default_template()
+	{
+		$this->_template = "\n".'<table style="width:100%; font-size:small; margin:10px 0; border-collapse:collapse; border:1px solid #CCC;">{rows}'."\n</table>";
+
+		$this->_template_rows = "\n\t<tr>\n\t\t".'<th style="text-align: left; border-bottom:1px solid #CCC;">{item}</th>'
+					."\n\t\t".'<td style="border-bottom:1px solid #CCC;">{result}</td>'."\n\t</tr>";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse Template
+	 *
+	 * Harvests the data within the template {pseudo-variables}
+	 *
+	 * @return	void
+	 */
+	protected function _parse_template()
+	{
+		if ($this->_template_rows !== NULL)
+		{
+			return;
+		}
+
+		if ($this->_template === NULL OR ! preg_match('/\{rows\}(.*?)\{\/rows\}/si', $this->_template, $match))
+		{
+			$this->_default_template();
+			return;
+		}
+
+		$this->_template_rows = $match[1];
+		$this->_template = str_replace($match[0], '{rows}', $this->_template);
+	}
+
+}
+
+/**
+ * Helper function to test boolean TRUE
+ *
+ * @param	mixed	$test
+ * @return	bool
+ */
+function is_true($test)
+{
+	return ($test === TRUE);
+}
+
+/**
+ * Helper function to test boolean FALSE
+ *
+ * @param	mixed	$test
+ * @return	bool
+ */
+function is_false($test)
+{
+	return ($test === FALSE);
+}
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
new file mode 100644
index 00000000..8d13e440
--- /dev/null
+++ b/system/libraries/Upload.php
@@ -0,0 +1,1324 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * File Uploading Class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Uploads
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/file_uploading.html
+ */
+class CI_Upload {
+
+	/**
+	 * Maximum file size
+	 *
+	 * @var	int
+	 */
+	public $max_size = 0;
+
+	/**
+	 * Maximum image width
+	 *
+	 * @var	int
+	 */
+	public $max_width = 0;
+
+	/**
+	 * Maximum image height
+	 *
+	 * @var	int
+	 */
+	public $max_height = 0;
+
+	/**
+	 * Minimum image width
+	 *
+	 * @var	int
+	 */
+	public $min_width = 0;
+
+	/**
+	 * Minimum image height
+	 *
+	 * @var	int
+	 */
+	public $min_height = 0;
+
+	/**
+	 * Maximum filename length
+	 *
+	 * @var	int
+	 */
+	public $max_filename = 0;
+
+	/**
+	 * Maximum duplicate filename increment ID
+	 *
+	 * @var	int
+	 */
+	public $max_filename_increment = 100;
+
+	/**
+	 * Allowed file types
+	 *
+	 * @var	string
+	 */
+	public $allowed_types = '';
+
+	/**
+	 * Temporary filename
+	 *
+	 * @var	string
+	 */
+	public $file_temp = '';
+
+	/**
+	 * Filename
+	 *
+	 * @var	string
+	 */
+	public $file_name = '';
+
+	/**
+	 * Original filename
+	 *
+	 * @var	string
+	 */
+	public $orig_name = '';
+
+	/**
+	 * File type
+	 *
+	 * @var	string
+	 */
+	public $file_type = '';
+
+	/**
+	 * File size
+	 *
+	 * @var	int
+	 */
+	public $file_size = NULL;
+
+	/**
+	 * Filename extension
+	 *
+	 * @var	string
+	 */
+	public $file_ext = '';
+
+	/**
+	 * Force filename extension to lowercase
+	 *
+	 * @var	string
+	 */
+	public $file_ext_tolower = FALSE;
+
+	/**
+	 * Upload path
+	 *
+	 * @var	string
+	 */
+	public $upload_path = '';
+
+	/**
+	 * Overwrite flag
+	 *
+	 * @var	bool
+	 */
+	public $overwrite = FALSE;
+
+	/**
+	 * Obfuscate filename flag
+	 *
+	 * @var	bool
+	 */
+	public $encrypt_name = FALSE;
+
+	/**
+	 * Is image flag
+	 *
+	 * @var	bool
+	 */
+	public $is_image = FALSE;
+
+	/**
+	 * Image width
+	 *
+	 * @var	int
+	 */
+	public $image_width = NULL;
+
+	/**
+	 * Image height
+	 *
+	 * @var	int
+	 */
+	public $image_height = NULL;
+
+	/**
+	 * Image type
+	 *
+	 * @var	string
+	 */
+	public $image_type = '';
+
+	/**
+	 * Image size string
+	 *
+	 * @var	string
+	 */
+	public $image_size_str = '';
+
+	/**
+	 * Error messages list
+	 *
+	 * @var	array
+	 */
+	public $error_msg = array();
+
+	/**
+	 * Remove spaces flag
+	 *
+	 * @var	bool
+	 */
+	public $remove_spaces = TRUE;
+
+	/**
+	 * MIME detection flag
+	 *
+	 * @var	bool
+	 */
+	public $detect_mime = TRUE;
+
+	/**
+	 * XSS filter flag
+	 *
+	 * @var	bool
+	 */
+	public $xss_clean = FALSE;
+
+	/**
+	 * Apache mod_mime fix flag
+	 *
+	 * @var	bool
+	 */
+	public $mod_mime_fix = TRUE;
+
+	/**
+	 * Temporary filename prefix
+	 *
+	 * @var	string
+	 */
+	public $temp_prefix = 'temp_file_';
+
+	/**
+	 * Filename sent by the client
+	 *
+	 * @var	bool
+	 */
+	public $client_name = '';
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Filename override
+	 *
+	 * @var	string
+	 */
+	protected $_file_name_override = '';
+
+	/**
+	 * MIME types list
+	 *
+	 * @var	array
+	 */
+	protected $_mimes = array();
+
+	/**
+	 * CI Singleton
+	 *
+	 * @var	object
+	 */
+	protected $_CI;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		empty($config) OR $this->initialize($config, FALSE);
+
+		$this->_mimes =& get_mimes();
+		$this->_CI =& get_instance();
+
+		log_message('info', 'Upload Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize preferences
+	 *
+	 * @param	array	$config
+	 * @param	bool	$reset
+	 * @return	CI_Upload
+	 */
+	public function initialize(array $config = array(), $reset = TRUE)
+	{
+		$reflection = new ReflectionClass($this);
+
+		if ($reset === TRUE)
+		{
+			$defaults = $reflection->getDefaultProperties();
+			foreach (array_keys($defaults) as $key)
+			{
+				if ($key[0] === '_')
+				{
+					continue;
+				}
+
+				if (isset($config[$key]))
+				{
+					if ($reflection->hasMethod('set_'.$key))
+					{
+						$this->{'set_'.$key}($config[$key]);
+					}
+					else
+					{
+						$this->$key = $config[$key];
+					}
+				}
+				else
+				{
+					$this->$key = $defaults[$key];
+				}
+			}
+		}
+		else
+		{
+			foreach ($config as $key => &$value)
+			{
+				if ($key[0] !== '_' && $reflection->hasProperty($key))
+				{
+					if ($reflection->hasMethod('set_'.$key))
+					{
+						$this->{'set_'.$key}($value);
+					}
+					else
+					{
+						$this->$key = $value;
+					}
+				}
+			}
+		}
+
+		// if a file_name was provided in the config, use it instead of the user input
+		// supplied file name for all uploads until initialized again
+		$this->_file_name_override = $this->file_name;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Perform the file upload
+	 *
+	 * @param	string	$field
+	 * @return	bool
+	 */
+	public function do_upload($field = 'userfile')
+	{
+		// Is $_FILES[$field] set? If not, no reason to continue.
+		if (isset($_FILES[$field]))
+		{
+			$_file = $_FILES[$field];
+		}
+		// Does the field name contain array notation?
+		elseif (($c = preg_match_all('/(?:^[^\[]+)|\[[^]]*\]/', $field, $matches)) > 1)
+		{
+			$_file = $_FILES;
+			for ($i = 0; $i < $c; $i++)
+			{
+				// We can't track numeric iterations, only full field names are accepted
+				if (($field = trim($matches[0][$i], '[]')) === '' OR ! isset($_file[$field]))
+				{
+					$_file = NULL;
+					break;
+				}
+
+				$_file = $_file[$field];
+			}
+		}
+
+		if ( ! isset($_file))
+		{
+			$this->set_error('upload_no_file_selected', 'debug');
+			return FALSE;
+		}
+
+		// Is the upload path valid?
+		if ( ! $this->validate_upload_path())
+		{
+			// errors will already be set by validate_upload_path() so just return FALSE
+			return FALSE;
+		}
+
+		// Was the file able to be uploaded? If not, determine the reason why.
+		if ( ! is_uploaded_file($_file['tmp_name']))
+		{
+			$error = isset($_file['error']) ? $_file['error'] : 4;
+
+			switch ($error)
+			{
+				case UPLOAD_ERR_INI_SIZE:
+					$this->set_error('upload_file_exceeds_limit', 'info');
+					break;
+				case UPLOAD_ERR_FORM_SIZE:
+					$this->set_error('upload_file_exceeds_form_limit', 'info');
+					break;
+				case UPLOAD_ERR_PARTIAL:
+					$this->set_error('upload_file_partial', 'debug');
+					break;
+				case UPLOAD_ERR_NO_FILE:
+					$this->set_error('upload_no_file_selected', 'debug');
+					break;
+				case UPLOAD_ERR_NO_TMP_DIR:
+					$this->set_error('upload_no_temp_directory', 'error');
+					break;
+				case UPLOAD_ERR_CANT_WRITE:
+					$this->set_error('upload_unable_to_write_file', 'error');
+					break;
+				case UPLOAD_ERR_EXTENSION:
+					$this->set_error('upload_stopped_by_extension', 'debug');
+					break;
+				default:
+					$this->set_error('upload_no_file_selected', 'debug');
+					break;
+			}
+
+			return FALSE;
+		}
+
+		// Set the uploaded data as class variables
+		$this->file_temp = $_file['tmp_name'];
+		$this->file_size = $_file['size'];
+
+		// Skip MIME type detection?
+		if ($this->detect_mime !== FALSE)
+		{
+			$this->_file_mime_type($_file);
+		}
+
+		$this->file_type = preg_replace('/^(.+?);.*$/', '\\1', $this->file_type);
+		$this->file_type = strtolower(trim(stripslashes($this->file_type), '"'));
+		$this->file_name = $this->_prep_filename($_file['name']);
+		$this->file_ext	 = $this->get_extension($this->file_name);
+		$this->client_name = $this->file_name;
+
+		// Is the file type allowed to be uploaded?
+		if ( ! $this->is_allowed_filetype())
+		{
+			$this->set_error('upload_invalid_filetype', 'debug');
+			return FALSE;
+		}
+
+		// if we're overriding, let's now make sure the new name and type is allowed
+		if ($this->_file_name_override !== '')
+		{
+			$this->file_name = $this->_prep_filename($this->_file_name_override);
+
+			// If no extension was provided in the file_name config item, use the uploaded one
+			if (strpos($this->_file_name_override, '.') === FALSE)
+			{
+				$this->file_name .= $this->file_ext;
+			}
+			else
+			{
+				// An extension was provided, let's have it!
+				$this->file_ext	= $this->get_extension($this->_file_name_override);
+			}
+
+			if ( ! $this->is_allowed_filetype(TRUE))
+			{
+				$this->set_error('upload_invalid_filetype', 'debug');
+				return FALSE;
+			}
+		}
+
+		// Convert the file size to kilobytes
+		if ($this->file_size > 0)
+		{
+			$this->file_size = round($this->file_size/1024, 2);
+		}
+
+		// Is the file size within the allowed maximum?
+		if ( ! $this->is_allowed_filesize())
+		{
+			$this->set_error('upload_invalid_filesize', 'info');
+			return FALSE;
+		}
+
+		// Are the image dimensions within the allowed size?
+		// Note: This can fail if the server has an open_basedir restriction.
+		if ( ! $this->is_allowed_dimensions())
+		{
+			$this->set_error('upload_invalid_dimensions', 'info');
+			return FALSE;
+		}
+
+		// Sanitize the file name for security
+		$this->file_name = $this->_CI->security->sanitize_filename($this->file_name);
+
+		// Truncate the file name if it's too long
+		if ($this->max_filename > 0)
+		{
+			$this->file_name = $this->limit_filename_length($this->file_name, $this->max_filename);
+		}
+
+		// Remove white spaces in the name
+		if ($this->remove_spaces === TRUE)
+		{
+			$this->file_name = preg_replace('/\s+/', '_', $this->file_name);
+		}
+
+		if ($this->file_ext_tolower && ($ext_length = strlen($this->file_ext)))
+		{
+			// file_ext was previously lower-cased by a get_extension() call
+			$this->file_name = substr($this->file_name, 0, -$ext_length).$this->file_ext;
+		}
+
+		/*
+		 * Validate the file name
+		 * This function appends an number onto the end of
+		 * the file if one with the same name already exists.
+		 * If it returns false there was a problem.
+		 */
+		$this->orig_name = $this->file_name;
+		if (FALSE === ($this->file_name = $this->set_filename($this->upload_path, $this->file_name)))
+		{
+			return FALSE;
+		}
+
+		/*
+		 * Run the file through the XSS hacking filter
+		 * This helps prevent malicious code from being
+		 * embedded within a file. Scripts can easily
+		 * be disguised as images or other file types.
+		 */
+		if ($this->xss_clean && $this->do_xss_clean() === FALSE)
+		{
+			$this->set_error('upload_unable_to_write_file', 'error');
+			return FALSE;
+		}
+
+		/*
+		 * Move the file to the final destination
+		 * To deal with different server configurations
+		 * we'll attempt to use copy() first. If that fails
+		 * we'll use move_uploaded_file(). One of the two should
+		 * reliably work in most environments
+		 */
+		if ( ! @copy($this->file_temp, $this->upload_path.$this->file_name))
+		{
+			if ( ! @move_uploaded_file($this->file_temp, $this->upload_path.$this->file_name))
+			{
+				$this->set_error('upload_destination_error', 'error');
+				return FALSE;
+			}
+		}
+
+		/*
+		 * Set the finalized image dimensions
+		 * This sets the image width/height (assuming the
+		 * file was an image). We use this information
+		 * in the "data" function.
+		 */
+		$this->set_image_properties($this->upload_path.$this->file_name);
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Finalized Data Array
+	 *
+	 * Returns an associative array containing all of the information
+	 * related to the upload, allowing the developer easy access in one array.
+	 *
+	 * @param	string	$index
+	 * @return	mixed
+	 */
+	public function data($index = NULL)
+	{
+		$data = array(
+				'file_name'		=> $this->file_name,
+				'file_type'		=> $this->file_type,
+				'file_path'		=> $this->upload_path,
+				'full_path'		=> $this->upload_path.$this->file_name,
+				'raw_name'		=> substr($this->file_name, 0, -strlen($this->file_ext)),
+				'orig_name'		=> $this->orig_name,
+				'client_name'		=> $this->client_name,
+				'file_ext'		=> $this->file_ext,
+				'file_size'		=> $this->file_size,
+				'is_image'		=> $this->is_image(),
+				'image_width'		=> $this->image_width,
+				'image_height'		=> $this->image_height,
+				'image_type'		=> $this->image_type,
+				'image_size_str'	=> $this->image_size_str,
+			);
+
+		if ( ! empty($index))
+		{
+			return isset($data[$index]) ? $data[$index] : NULL;
+		}
+
+		return $data;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Upload Path
+	 *
+	 * @param	string	$path
+	 * @return	CI_Upload
+	 */
+	public function set_upload_path($path)
+	{
+		// Make sure it has a trailing slash
+		$this->upload_path = rtrim($path, '/').'/';
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the file name
+	 *
+	 * This function takes a filename/path as input and looks for the
+	 * existence of a file with the same name. If found, it will append a
+	 * number to the end of the filename to avoid overwriting a pre-existing file.
+	 *
+	 * @param	string	$path
+	 * @param	string	$filename
+	 * @return	string
+	 */
+	public function set_filename($path, $filename)
+	{
+		if ($this->encrypt_name === TRUE)
+		{
+			$filename = md5(uniqid(mt_rand())).$this->file_ext;
+		}
+
+		if ($this->overwrite === TRUE OR ! file_exists($path.$filename))
+		{
+			return $filename;
+		}
+
+		$filename = str_replace($this->file_ext, '', $filename);
+
+		$new_filename = '';
+		for ($i = 1; $i < $this->max_filename_increment; $i++)
+		{
+			if ( ! file_exists($path.$filename.$i.$this->file_ext))
+			{
+				$new_filename = $filename.$i.$this->file_ext;
+				break;
+			}
+		}
+
+		if ($new_filename === '')
+		{
+			$this->set_error('upload_bad_filename', 'debug');
+			return FALSE;
+		}
+
+		return $new_filename;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Maximum File Size
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	public function set_max_filesize($n)
+	{
+		$this->max_size = ($n < 0) ? 0 : (int) $n;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Maximum File Size
+	 *
+	 * An internal alias to set_max_filesize() to help with configuration
+	 * as initialize() will look for a set_<property_name>() method ...
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	protected function set_max_size($n)
+	{
+		return $this->set_max_filesize($n);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Maximum File Name Length
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	public function set_max_filename($n)
+	{
+		$this->max_filename = ($n < 0) ? 0 : (int) $n;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Maximum Image Width
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	public function set_max_width($n)
+	{
+		$this->max_width = ($n < 0) ? 0 : (int) $n;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Maximum Image Height
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	public function set_max_height($n)
+	{
+		$this->max_height = ($n < 0) ? 0 : (int) $n;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set minimum image width
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	public function set_min_width($n)
+	{
+		$this->min_width = ($n < 0) ? 0 : (int) $n;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set minimum image height
+	 *
+	 * @param	int	$n
+	 * @return	CI_Upload
+	 */
+	public function set_min_height($n)
+	{
+		$this->min_height = ($n < 0) ? 0 : (int) $n;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Allowed File Types
+	 *
+	 * @param	mixed	$types
+	 * @return	CI_Upload
+	 */
+	public function set_allowed_types($types)
+	{
+		$this->allowed_types = (is_array($types) OR $types === '*')
+			? $types
+			: explode('|', $types);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Image Properties
+	 *
+	 * Uses GD to determine the width/height/type of image
+	 *
+	 * @param	string	$path
+	 * @return	CI_Upload
+	 */
+	public function set_image_properties($path = '')
+	{
+		if ($this->is_image() && function_exists('getimagesize'))
+		{
+			if (FALSE !== ($D = @getimagesize($path)))
+			{
+				$types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png');
+
+				$this->image_width	= $D[0];
+				$this->image_height	= $D[1];
+				$this->image_type	= isset($types[$D[2]]) ? $types[$D[2]] : 'unknown';
+				$this->image_size_str	= $D[3]; // string containing height and width
+			}
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set XSS Clean
+	 *
+	 * Enables the XSS flag so that the file that was uploaded
+	 * will be run through the XSS filter.
+	 *
+	 * @param	bool	$flag
+	 * @return	CI_Upload
+	 */
+	public function set_xss_clean($flag = FALSE)
+	{
+		$this->xss_clean = ($flag === TRUE);
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate the image
+	 *
+	 * @return	bool
+	 */
+	public function is_image()
+	{
+		// IE will sometimes return odd mime-types during upload, so here we just standardize all
+		// jpegs or pngs to the same file type.
+
+		$png_mimes  = array('image/x-png');
+		$jpeg_mimes = array('image/jpg', 'image/jpe', 'image/jpeg', 'image/pjpeg');
+
+		if (in_array($this->file_type, $png_mimes))
+		{
+			$this->file_type = 'image/png';
+		}
+		elseif (in_array($this->file_type, $jpeg_mimes))
+		{
+			$this->file_type = 'image/jpeg';
+		}
+
+		$img_mimes = array('image/gif',	'image/jpeg', 'image/png', 'image/webp');
+
+		return in_array($this->file_type, $img_mimes, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Verify that the filetype is allowed
+	 *
+	 * @param	bool	$ignore_mime
+	 * @return	bool
+	 */
+	public function is_allowed_filetype($ignore_mime = FALSE)
+	{
+		if ($this->allowed_types === '*')
+		{
+			return TRUE;
+		}
+
+		if (empty($this->allowed_types) OR ! is_array($this->allowed_types))
+		{
+			$this->set_error('upload_no_file_types', 'debug');
+			return FALSE;
+		}
+
+		$ext = strtolower(ltrim($this->file_ext, '.'));
+
+		if ( ! in_array($ext, $this->allowed_types, TRUE))
+		{
+			return FALSE;
+		}
+
+		// Images get some additional checks
+		if (in_array($ext, array('gif', 'jpg', 'jpeg', 'jpe', 'png', 'webp'), TRUE) && @getimagesize($this->file_temp) === FALSE)
+		{
+			return FALSE;
+		}
+
+		if ($ignore_mime === TRUE)
+		{
+			return TRUE;
+		}
+
+		if (isset($this->_mimes[$ext]))
+		{
+			return is_array($this->_mimes[$ext])
+				? in_array($this->file_type, $this->_mimes[$ext], TRUE)
+				: ($this->_mimes[$ext] === $this->file_type);
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Verify that the file is within the allowed size
+	 *
+	 * @return	bool
+	 */
+	public function is_allowed_filesize()
+	{
+		return ($this->max_size === 0 OR $this->max_size > $this->file_size);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Verify that the image is within the allowed width/height
+	 *
+	 * @return	bool
+	 */
+	public function is_allowed_dimensions()
+	{
+		if ( ! $this->is_image())
+		{
+			return TRUE;
+		}
+
+		if (function_exists('getimagesize'))
+		{
+			$D = @getimagesize($this->file_temp);
+
+			if ($this->max_width > 0 && $D[0] > $this->max_width)
+			{
+				return FALSE;
+			}
+
+			if ($this->max_height > 0 && $D[1] > $this->max_height)
+			{
+				return FALSE;
+			}
+
+			if ($this->min_width > 0 && $D[0] < $this->min_width)
+			{
+				return FALSE;
+			}
+
+			if ($this->min_height > 0 && $D[1] < $this->min_height)
+			{
+				return FALSE;
+			}
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate Upload Path
+	 *
+	 * Verifies that it is a valid upload path with proper permissions.
+	 *
+	 * @return	bool
+	 */
+	public function validate_upload_path()
+	{
+		if ($this->upload_path === '')
+		{
+			$this->set_error('upload_no_filepath', 'error');
+			return FALSE;
+		}
+
+		if (realpath($this->upload_path) !== FALSE)
+		{
+			$this->upload_path = str_replace('\\', '/', realpath($this->upload_path));
+		}
+
+		if ( ! is_dir($this->upload_path))
+		{
+			$this->set_error('upload_no_filepath', 'error');
+			return FALSE;
+		}
+
+		if ( ! is_really_writable($this->upload_path))
+		{
+			$this->set_error('upload_not_writable', 'error');
+			return FALSE;
+		}
+
+		$this->upload_path = preg_replace('/(.+?)\/*$/', '\\1/',  $this->upload_path);
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Extract the file extension
+	 *
+	 * @param	string	$filename
+	 * @return	string
+	 */
+	public function get_extension($filename)
+	{
+		$x = explode('.', $filename);
+
+		if (count($x) === 1)
+		{
+			return '';
+		}
+
+		$ext = ($this->file_ext_tolower) ? strtolower(end($x)) : end($x);
+		return '.'.$ext;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Limit the File Name Length
+	 *
+	 * @param	string	$filename
+	 * @param	int	$length
+	 * @return	string
+	 */
+	public function limit_filename_length($filename, $length)
+	{
+		if (strlen($filename) < $length)
+		{
+			return $filename;
+		}
+
+		$ext = '';
+		if (strpos($filename, '.') !== FALSE)
+		{
+			$parts		= explode('.', $filename);
+			$ext		= '.'.array_pop($parts);
+			$filename	= implode('.', $parts);
+		}
+
+		return substr($filename, 0, ($length - strlen($ext))).$ext;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Runs the file through the XSS clean function
+	 *
+	 * This prevents people from embedding malicious code in their files.
+	 * I'm not sure that it won't negatively affect certain files in unexpected ways,
+	 * but so far I haven't found that it causes trouble.
+	 *
+	 * @return	string
+	 */
+	public function do_xss_clean()
+	{
+		$file = $this->file_temp;
+
+		if (filesize($file) == 0)
+		{
+			return FALSE;
+		}
+
+		if (memory_get_usage() && ($memory_limit = ini_get('memory_limit')) > 0)
+		{
+			$memory_limit = str_split($memory_limit, strspn($memory_limit, '1234567890'));
+			if ( ! empty($memory_limit[1]))
+			{
+				switch ($memory_limit[1][0])
+				{
+					case 'g':
+					case 'G':
+						$memory_limit[0] *= 1024 * 1024 * 1024;
+						break;
+					case 'm':
+					case 'M':
+						$memory_limit[0] *= 1024 * 1024;
+						break;
+					default:
+						break;
+				}
+			}
+
+			$memory_limit = (int) ceil(filesize($file) + $memory_limit[0]);
+			ini_set('memory_limit', $memory_limit); // When an integer is used, the value is measured in bytes. - PHP.net
+		}
+
+		// If the file being uploaded is an image, then we should have no problem with XSS attacks (in theory), but
+		// IE can be fooled into mime-type detecting a malformed image as an html file, thus executing an XSS attack on anyone
+		// using IE who looks at the image. It does this by inspecting the first 255 bytes of an image. To get around this
+		// CI will itself look at the first 255 bytes of an image to determine its relative safety. This can save a lot of
+		// processor power and time if it is actually a clean image, as it will be in nearly all instances _except_ an
+		// attempted XSS attack.
+
+		if (function_exists('getimagesize') && @getimagesize($file) !== FALSE)
+		{
+			if (($file = @fopen($file, 'rb')) === FALSE) // "b" to force binary
+			{
+				return FALSE; // Couldn't open the file, return FALSE
+			}
+
+			$opening_bytes = fread($file, 256);
+			fclose($file);
+
+			// These are known to throw IE into mime-type detection chaos
+			// <a, <body, <head, <html, <img, <plaintext, <pre, <script, <table, <title
+			// title is basically just in SVG, but we filter it anyhow
+
+			// if it's an image or no "triggers" detected in the first 256 bytes - we're good
+			return ! preg_match('/<(a|body|head|html|img|plaintext|pre|script|table|title)[\s>]/i', $opening_bytes);
+		}
+
+		if (($data = @file_get_contents($file)) === FALSE)
+		{
+			return FALSE;
+		}
+
+		return $this->_CI->security->xss_clean($data, TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set an error message
+	 *
+	 * @param	string	$msg
+	 * @return	CI_Upload
+	 */
+	public function set_error($msg, $log_level = 'error')
+	{
+		$this->_CI->lang->load('upload');
+
+		is_array($msg) OR $msg = array($msg);
+		foreach ($msg as $val)
+		{
+			$msg = ($this->_CI->lang->line($val) === FALSE) ? $val : $this->_CI->lang->line($val);
+			$this->error_msg[] = $msg;
+			log_message($log_level, $msg);
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Display the error message
+	 *
+	 * @param	string	$open
+	 * @param	string	$close
+	 * @return	string
+	 */
+	public function display_errors($open = '<p>', $close = '</p>')
+	{
+		return (count($this->error_msg) > 0) ? $open.implode($close.$open, $this->error_msg).$close : '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep Filename
+	 *
+	 * Prevents possible script execution from Apache's handling
+	 * of files' multiple extensions.
+	 *
+	 * @link	https://httpd.apache.org/docs/1.3/mod/mod_mime.html#multipleext
+	 *
+	 * @param	string	$filename
+	 * @return	string
+	 */
+	protected function _prep_filename($filename)
+	{
+		if ($this->mod_mime_fix === FALSE OR $this->allowed_types === '*' OR ($ext_pos = strrpos($filename, '.')) === FALSE)
+		{
+			return $filename;
+		}
+
+		$ext = substr($filename, $ext_pos);
+		$filename = substr($filename, 0, $ext_pos);
+		return str_replace('.', '_', $filename).$ext;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * File MIME type
+	 *
+	 * Detects the (actual) MIME type of the uploaded file, if possible.
+	 * The input array is expected to be $_FILES[$field]
+	 *
+	 * @param	array	$file
+	 * @return	void
+	 */
+	protected function _file_mime_type($file)
+	{
+		// We'll need this to validate the MIME info string (e.g. text/plain; charset=us-ascii)
+		$regexp = '/^([a-z\-]+\/[a-z0-9\-\.\+]+)(;\s.+)?$/';
+
+		/**
+		 * Fileinfo extension - most reliable method
+		 *
+		 * Apparently XAMPP, CentOS, cPanel and who knows what
+		 * other PHP distribution channels EXPLICITLY DISABLE
+		 * ext/fileinfo, which is otherwise enabled by default
+		 * since PHP 5.3 ...
+		 */
+		if (function_exists('finfo_file'))
+		{
+			$finfo = @finfo_open(FILEINFO_MIME);
+			if (is_resource($finfo)) // It is possible that a FALSE value is returned, if there is no magic MIME database file found on the system
+			{
+				$mime = @finfo_file($finfo, $file['tmp_name']);
+				finfo_close($finfo);
+
+				/* According to the comments section of the PHP manual page,
+				 * it is possible that this function returns an empty string
+				 * for some files (e.g. if they don't exist in the magic MIME database)
+				 */
+				if (is_string($mime) && preg_match($regexp, $mime, $matches))
+				{
+					$this->file_type = $matches[1];
+					return;
+				}
+			}
+		}
+
+		/* This is an ugly hack, but UNIX-type systems provide a "native" way to detect the file type,
+		 * which is still more secure than depending on the value of $_FILES[$field]['type'], and as it
+		 * was reported in issue #750 (https://github.com/EllisLab/CodeIgniter/issues/750) - it's better
+		 * than mime_content_type() as well, hence the attempts to try calling the command line with
+		 * three different functions.
+		 *
+		 * Notes:
+		 *	- the DIRECTORY_SEPARATOR comparison ensures that we're not on a Windows system
+		 *	- many system admins would disable the exec(), shell_exec(), popen() and similar functions
+		 *	  due to security concerns, hence the function_usable() checks
+		 */
+		if (DIRECTORY_SEPARATOR !== '\\')
+		{
+			$cmd = 'file --brief --mime '.escapeshellarg($file['tmp_name']).' 2>&1';
+
+			if (function_usable('exec'))
+			{
+				/* This might look confusing, as $mime is being populated with all of the output when set in the second parameter.
+				 * However, we only need the last line, which is the actual return value of exec(), and as such - it overwrites
+				 * anything that could already be set for $mime previously. This effectively makes the second parameter a dummy
+				 * value, which is only put to allow us to get the return status code.
+				 */
+				$mime = @exec($cmd, $mime, $return_status);
+				if ($return_status === 0 && is_string($mime) && preg_match($regexp, $mime, $matches))
+				{
+					$this->file_type = $matches[1];
+					return;
+				}
+			}
+
+			if (function_usable('shell_exec'))
+			{
+				$mime = @shell_exec($cmd);
+				if (strlen($mime) > 0)
+				{
+					$mime = explode("\n", trim($mime));
+					if (preg_match($regexp, $mime[(count($mime) - 1)], $matches))
+					{
+						$this->file_type = $matches[1];
+						return;
+					}
+				}
+			}
+
+			if (function_usable('popen'))
+			{
+				$proc = @popen($cmd, 'r');
+				if (is_resource($proc))
+				{
+					$mime = @fread($proc, 512);
+					@pclose($proc);
+					if ($mime !== FALSE)
+					{
+						$mime = explode("\n", trim($mime));
+						if (preg_match($regexp, $mime[(count($mime) - 1)], $matches))
+						{
+							$this->file_type = $matches[1];
+							return;
+						}
+					}
+				}
+			}
+		}
+
+		// Fall back to mime_content_type(), if available (still better than $_FILES[$field]['type'])
+		if (function_exists('mime_content_type'))
+		{
+			$this->file_type = @mime_content_type($file['tmp_name']);
+			if (strlen($this->file_type) > 0) // It's possible that mime_content_type() returns FALSE or an empty string
+			{
+				return;
+			}
+		}
+
+		$this->file_type = $file['type'];
+	}
+
+}
diff --git a/system/libraries/User_agent.php b/system/libraries/User_agent.php
new file mode 100644
index 00000000..a42975b3
--- /dev/null
+++ b/system/libraries/User_agent.php
@@ -0,0 +1,681 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * User Agent Class
+ *
+ * Identifies the platform, browser, robot, or mobile device of the browsing agent
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	User Agent
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/user_agent.html
+ */
+class CI_User_agent {
+
+	/**
+	 * Current user-agent
+	 *
+	 * @var string
+	 */
+	public $agent = NULL;
+
+	/**
+	 * Flag for if the user-agent belongs to a browser
+	 *
+	 * @var bool
+	 */
+	public $is_browser = FALSE;
+
+	/**
+	 * Flag for if the user-agent is a robot
+	 *
+	 * @var bool
+	 */
+	public $is_robot = FALSE;
+
+	/**
+	 * Flag for if the user-agent is a mobile browser
+	 *
+	 * @var bool
+	 */
+	public $is_mobile = FALSE;
+
+	/**
+	 * Languages accepted by the current user agent
+	 *
+	 * @var array
+	 */
+	public $languages = array();
+
+	/**
+	 * Character sets accepted by the current user agent
+	 *
+	 * @var array
+	 */
+	public $charsets = array();
+
+	/**
+	 * List of platforms to compare against current user agent
+	 *
+	 * @var array
+	 */
+	public $platforms = array();
+
+	/**
+	 * List of browsers to compare against current user agent
+	 *
+	 * @var array
+	 */
+	public $browsers = array();
+
+	/**
+	 * List of mobile browsers to compare against current user agent
+	 *
+	 * @var array
+	 */
+	public $mobiles = array();
+
+	/**
+	 * List of robots to compare against current user agent
+	 *
+	 * @var array
+	 */
+	public $robots = array();
+
+	/**
+	 * Current user-agent platform
+	 *
+	 * @var string
+	 */
+	public $platform = '';
+
+	/**
+	 * Current user-agent browser
+	 *
+	 * @var string
+	 */
+	public $browser = '';
+
+	/**
+	 * Current user-agent version
+	 *
+	 * @var string
+	 */
+	public $version = '';
+
+	/**
+	 * Current user-agent mobile name
+	 *
+	 * @var string
+	 */
+	public $mobile = '';
+
+	/**
+	 * Current user-agent robot name
+	 *
+	 * @var string
+	 */
+	public $robot = '';
+
+	/**
+	 * HTTP Referer
+	 *
+	 * @var	mixed
+	 */
+	public $referer;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * Sets the User Agent and runs the compilation routine
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		$this->_load_agent_file();
+
+		if (isset($_SERVER['HTTP_USER_AGENT']))
+		{
+			$this->agent = trim($_SERVER['HTTP_USER_AGENT']);
+			$this->_compile_data();
+		}
+
+		log_message('info', 'User Agent Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile the User Agent Data
+	 *
+	 * @return	bool
+	 */
+	protected function _load_agent_file()
+	{
+		if (($found = file_exists(APPPATH.'config/user_agents.php')))
+		{
+			include(APPPATH.'config/user_agents.php');
+		}
+
+		if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/user_agents.php'))
+		{
+			include(APPPATH.'config/'.ENVIRONMENT.'/user_agents.php');
+			$found = TRUE;
+		}
+
+		if ($found !== TRUE)
+		{
+			return FALSE;
+		}
+
+		$return = FALSE;
+
+		if (isset($platforms))
+		{
+			$this->platforms = $platforms;
+			unset($platforms);
+			$return = TRUE;
+		}
+
+		if (isset($browsers))
+		{
+			$this->browsers = $browsers;
+			unset($browsers);
+			$return = TRUE;
+		}
+
+		if (isset($mobiles))
+		{
+			$this->mobiles = $mobiles;
+			unset($mobiles);
+			$return = TRUE;
+		}
+
+		if (isset($robots))
+		{
+			$this->robots = $robots;
+			unset($robots);
+			$return = TRUE;
+		}
+
+		return $return;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Compile the User Agent Data
+	 *
+	 * @return	bool
+	 */
+	protected function _compile_data()
+	{
+		$this->_set_platform();
+
+		foreach (array('_set_robot', '_set_browser', '_set_mobile') as $function)
+		{
+			if ($this->$function() === TRUE)
+			{
+				break;
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Platform
+	 *
+	 * @return	bool
+	 */
+	protected function _set_platform()
+	{
+		if (is_array($this->platforms) && count($this->platforms) > 0)
+		{
+			foreach ($this->platforms as $key => $val)
+			{
+				if (preg_match('|'.preg_quote($key).'|i', $this->agent))
+				{
+					$this->platform = $val;
+					return TRUE;
+				}
+			}
+		}
+
+		$this->platform = 'Unknown Platform';
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Browser
+	 *
+	 * @return	bool
+	 */
+	protected function _set_browser()
+	{
+		if (is_array($this->browsers) && count($this->browsers) > 0)
+		{
+			foreach ($this->browsers as $key => $val)
+			{
+				if (preg_match('|'.$key.'.*?([0-9\.]+)|i', $this->agent, $match))
+				{
+					$this->is_browser = TRUE;
+					$this->version = $match[1];
+					$this->browser = $val;
+					$this->_set_mobile();
+					return TRUE;
+				}
+			}
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Robot
+	 *
+	 * @return	bool
+	 */
+	protected function _set_robot()
+	{
+		if (is_array($this->robots) && count($this->robots) > 0)
+		{
+			foreach ($this->robots as $key => $val)
+			{
+				if (preg_match('|'.preg_quote($key).'|i', $this->agent))
+				{
+					$this->is_robot = TRUE;
+					$this->robot = $val;
+					$this->_set_mobile();
+					return TRUE;
+				}
+			}
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the Mobile Device
+	 *
+	 * @return	bool
+	 */
+	protected function _set_mobile()
+	{
+		if (is_array($this->mobiles) && count($this->mobiles) > 0)
+		{
+			foreach ($this->mobiles as $key => $val)
+			{
+				if (FALSE !== (stripos($this->agent, $key)))
+				{
+					$this->is_mobile = TRUE;
+					$this->mobile = $val;
+					return TRUE;
+				}
+			}
+		}
+
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the accepted languages
+	 *
+	 * @return	void
+	 */
+	protected function _set_languages()
+	{
+		if ((count($this->languages) === 0) && ! empty($_SERVER['HTTP_ACCEPT_LANGUAGE']))
+		{
+			$this->languages = explode(',', preg_replace('/(;\s?q=[0-9\.]+)|\s/i', '', strtolower(trim($_SERVER['HTTP_ACCEPT_LANGUAGE']))));
+		}
+
+		if (count($this->languages) === 0)
+		{
+			$this->languages = array('Undefined');
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set the accepted character sets
+	 *
+	 * @return	void
+	 */
+	protected function _set_charsets()
+	{
+		if ((count($this->charsets) === 0) && ! empty($_SERVER['HTTP_ACCEPT_CHARSET']))
+		{
+			$this->charsets = explode(',', preg_replace('/(;\s?q=.+)|\s/i', '', strtolower(trim($_SERVER['HTTP_ACCEPT_CHARSET']))));
+		}
+
+		if (count($this->charsets) === 0)
+		{
+			$this->charsets = array('Undefined');
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is Browser
+	 *
+	 * @param	string	$key
+	 * @return	bool
+	 */
+	public function is_browser($key = NULL)
+	{
+		if ( ! $this->is_browser)
+		{
+			return FALSE;
+		}
+
+		// No need to be specific, it's a browser
+		if ($key === NULL)
+		{
+			return TRUE;
+		}
+
+		// Check for a specific browser
+		return (isset($this->browsers[$key]) && $this->browser === $this->browsers[$key]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is Robot
+	 *
+	 * @param	string	$key
+	 * @return	bool
+	 */
+	public function is_robot($key = NULL)
+	{
+		if ( ! $this->is_robot)
+		{
+			return FALSE;
+		}
+
+		// No need to be specific, it's a robot
+		if ($key === NULL)
+		{
+			return TRUE;
+		}
+
+		// Check for a specific robot
+		return (isset($this->robots[$key]) && $this->robot === $this->robots[$key]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is Mobile
+	 *
+	 * @param	string	$key
+	 * @return	bool
+	 */
+	public function is_mobile($key = NULL)
+	{
+		if ( ! $this->is_mobile)
+		{
+			return FALSE;
+		}
+
+		// No need to be specific, it's a mobile
+		if ($key === NULL)
+		{
+			return TRUE;
+		}
+
+		// Check for a specific robot
+		return (isset($this->mobiles[$key]) && $this->mobile === $this->mobiles[$key]);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Is this a referral from another site?
+	 *
+	 * @return	bool
+	 */
+	public function is_referral()
+	{
+		if ( ! isset($this->referer))
+		{
+			if (empty($_SERVER['HTTP_REFERER']))
+			{
+				$this->referer = FALSE;
+			}
+			else
+			{
+				$referer_host = @parse_url($_SERVER['HTTP_REFERER'], PHP_URL_HOST);
+				$own_host = parse_url(config_item('base_url'), PHP_URL_HOST);
+
+				$this->referer = ($referer_host && $referer_host !== $own_host);
+			}
+		}
+
+		return $this->referer;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Agent String
+	 *
+	 * @return	string
+	 */
+	public function agent_string()
+	{
+		return $this->agent;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Platform
+	 *
+	 * @return	string
+	 */
+	public function platform()
+	{
+		return $this->platform;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Browser Name
+	 *
+	 * @return	string
+	 */
+	public function browser()
+	{
+		return $this->browser;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the Browser Version
+	 *
+	 * @return	string
+	 */
+	public function version()
+	{
+		return $this->version;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get The Robot Name
+	 *
+	 * @return	string
+	 */
+	public function robot()
+	{
+		return $this->robot;
+	}
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the Mobile Device
+	 *
+	 * @return	string
+	 */
+	public function mobile()
+	{
+		return $this->mobile;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the referrer
+	 *
+	 * @return	bool
+	 */
+	public function referrer()
+	{
+		return empty($_SERVER['HTTP_REFERER']) ? '' : trim($_SERVER['HTTP_REFERER']);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the accepted languages
+	 *
+	 * @return	array
+	 */
+	public function languages()
+	{
+		if (count($this->languages) === 0)
+		{
+			$this->_set_languages();
+		}
+
+		return $this->languages;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the accepted Character Sets
+	 *
+	 * @return	array
+	 */
+	public function charsets()
+	{
+		if (count($this->charsets) === 0)
+		{
+			$this->_set_charsets();
+		}
+
+		return $this->charsets;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Test for a particular language
+	 *
+	 * @param	string	$lang
+	 * @return	bool
+	 */
+	public function accept_lang($lang = 'en')
+	{
+		return in_array(strtolower($lang), $this->languages(), TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Test for a particular character set
+	 *
+	 * @param	string	$charset
+	 * @return	bool
+	 */
+	public function accept_charset($charset = 'utf-8')
+	{
+		return in_array(strtolower($charset), $this->charsets(), TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse a custom user-agent string
+	 *
+	 * @param	string	$string
+	 * @return	void
+	 */
+	public function parse($string)
+	{
+		// Reset values
+		$this->is_browser = FALSE;
+		$this->is_robot = FALSE;
+		$this->is_mobile = FALSE;
+		$this->browser = '';
+		$this->version = '';
+		$this->mobile = '';
+		$this->robot = '';
+
+		// Set the new user-agent string and parse it, unless empty
+		$this->agent = $string;
+
+		if ( ! empty($string))
+		{
+			$this->_compile_data();
+		}
+	}
+
+}
diff --git a/system/libraries/Xmlrpc.php b/system/libraries/Xmlrpc.php
new file mode 100644
index 00000000..fbb9a28a
--- /dev/null
+++ b/system/libraries/Xmlrpc.php
@@ -0,0 +1,1918 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+if ( ! function_exists('xml_parser_create'))
+{
+	show_error('Your PHP installation does not support XML');
+}
+
+// ------------------------------------------------------------------------
+
+/**
+ * XML-RPC request handler class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	XML-RPC
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/xmlrpc.html
+ */
+class CI_Xmlrpc {
+
+	/**
+	 * Debug flag
+	 *
+	 * @var	bool
+	 */
+	public $debug		= FALSE;
+
+	/**
+	 * I4 data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcI4	= 'i4';
+
+	/**
+	 * Integer data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcInt	= 'int';
+
+	/**
+	 * Boolean data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcBoolean	= 'boolean';
+
+	/**
+	 * Double data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcDouble	= 'double';
+
+	/**
+	 * String data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcString	= 'string';
+
+	/**
+	 * DateTime format
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcDateTime	= 'dateTime.iso8601';
+
+	/**
+	 * Base64 data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcBase64	= 'base64';
+
+	/**
+	 * Array data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcArray	= 'array';
+
+	/**
+	 * Struct data type
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcStruct	= 'struct';
+
+	/**
+	 * Data types list
+	 *
+	 * @var	array
+	 */
+	public $xmlrpcTypes	= array();
+
+	/**
+	 * Valid parents list
+	 *
+	 * @var	array
+	 */
+	public $valid_parents	= array();
+
+	/**
+	 * Response error numbers list
+	 *
+	 * @var	array
+	 */
+	public $xmlrpcerr		= array();
+
+	/**
+	 * Response error messages list
+	 *
+	 * @var	string[]
+	 */
+	public $xmlrpcstr		= array();
+
+	/**
+	 * Encoding charset
+	 *
+	 * @var	string
+	 */
+	public $xmlrpc_defencoding	= 'UTF-8';
+
+	/**
+	 * XML-RPC client name
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcName		= 'XML-RPC for CodeIgniter';
+
+	/**
+	 * XML-RPC version
+	 *
+	 * @var	string
+	 */
+	public $xmlrpcVersion		= '1.1';
+
+	/**
+	 * Start of user errors
+	 *
+	 * @var	int
+	 */
+	public $xmlrpcerruser		= 800;
+
+	/**
+	 * Start of XML parse errors
+	 *
+	 * @var	int
+	 */
+	public $xmlrpcerrxml		= 100;
+
+	/**
+	 * Backslash replacement value
+	 *
+	 * @var	string
+	 */
+	public $xmlrpc_backslash	= '';
+
+	/**
+	 * XML-RPC Client object
+	 *
+	 * @var	object
+	 */
+	public $client;
+
+	/**
+	 * XML-RPC Method name
+	 *
+	 * @var	string
+	 */
+	public $method;
+
+	/**
+	 * XML-RPC Data
+	 *
+	 * @var	array
+	 */
+	public $data;
+
+	/**
+	 * XML-RPC Message
+	 *
+	 * @var	string
+	 */
+	public $message			= '';
+
+	/**
+	 * Request error message
+	 *
+	 * @var	string
+	 */
+	public $error			= '';
+
+	/**
+	 * XML-RPC result object
+	 *
+	 * @var	object
+	 */
+	public $result;
+
+	/**
+	 * XML-RPC Response
+	 *
+	 * @var	array
+	 */
+	public $response		= array(); // Response from remote server
+
+	/**
+	 * XSS Filter flag
+	 *
+	 * @var	bool
+	 */
+	public $xss_clean		= TRUE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * Initializes property default values
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		$this->xmlrpc_backslash = chr(92).chr(92);
+
+		// Types for info sent back and forth
+		$this->xmlrpcTypes = array(
+			$this->xmlrpcI4	 		=> '1',
+			$this->xmlrpcInt		=> '1',
+			$this->xmlrpcBoolean	=> '1',
+			$this->xmlrpcString		=> '1',
+			$this->xmlrpcDouble		=> '1',
+			$this->xmlrpcDateTime	=> '1',
+			$this->xmlrpcBase64		=> '1',
+			$this->xmlrpcArray		=> '2',
+			$this->xmlrpcStruct		=> '3'
+		);
+
+		// Array of Valid Parents for Various XML-RPC elements
+		$this->valid_parents = array('BOOLEAN' => array('VALUE'),
+			'I4'				=> array('VALUE'),
+			'INT'				=> array('VALUE'),
+			'STRING'			=> array('VALUE'),
+			'DOUBLE'			=> array('VALUE'),
+			'DATETIME.ISO8601'	=> array('VALUE'),
+			'BASE64'			=> array('VALUE'),
+			'ARRAY'			=> array('VALUE'),
+			'STRUCT'			=> array('VALUE'),
+			'PARAM'			=> array('PARAMS'),
+			'METHODNAME'		=> array('METHODCALL'),
+			'PARAMS'			=> array('METHODCALL', 'METHODRESPONSE'),
+			'MEMBER'			=> array('STRUCT'),
+			'NAME'				=> array('MEMBER'),
+			'DATA'				=> array('ARRAY'),
+			'FAULT'			=> array('METHODRESPONSE'),
+			'VALUE'			=> array('MEMBER', 'DATA', 'PARAM', 'FAULT')
+		);
+
+		// XML-RPC Responses
+		$this->xmlrpcerr['unknown_method'] = '1';
+		$this->xmlrpcstr['unknown_method'] = 'This is not a known method for this XML-RPC Server';
+		$this->xmlrpcerr['invalid_return'] = '2';
+		$this->xmlrpcstr['invalid_return'] = 'The XML data received was either invalid or not in the correct form for XML-RPC. Turn on debugging to examine the XML data further.';
+		$this->xmlrpcerr['incorrect_params'] = '3';
+		$this->xmlrpcstr['incorrect_params'] = 'Incorrect parameters were passed to method';
+		$this->xmlrpcerr['introspect_unknown'] = '4';
+		$this->xmlrpcstr['introspect_unknown'] = 'Cannot inspect signature for request: method unknown';
+		$this->xmlrpcerr['http_error'] = '5';
+		$this->xmlrpcstr['http_error'] = "Did not receive a '200 OK' response from remote server.";
+		$this->xmlrpcerr['no_data'] = '6';
+		$this->xmlrpcstr['no_data'] = 'No data received from server.';
+
+		$this->initialize($config);
+
+		log_message('info', 'XML-RPC Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function initialize($config = array())
+	{
+		if (count($config) > 0)
+		{
+			foreach ($config as $key => $val)
+			{
+				if (isset($this->$key))
+				{
+					$this->$key = $val;
+				}
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse server URL
+	 *
+	 * @param	string	$url
+	 * @param	int	$port
+	 * @param	string	$proxy
+	 * @param	int	$proxy_port
+	 * @return	void
+	 */
+	public function server($url, $port = 80, $proxy = FALSE, $proxy_port = 8080)
+	{
+		if (stripos($url, 'http') !== 0)
+		{
+			$url = 'http://'.$url;
+		}
+
+		$parts = parse_url($url);
+
+		if (isset($parts['user'], $parts['pass']))
+		{
+			$parts['host'] = $parts['user'].':'.$parts['pass'].'@'.$parts['host'];
+		}
+
+		$path = isset($parts['path']) ? $parts['path'] : '/';
+
+		if ( ! empty($parts['query']))
+		{
+			$path .= '?'.$parts['query'];
+		}
+
+		$this->client = new XML_RPC_Client($path, $parts['host'], $port, $proxy, $proxy_port);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Timeout
+	 *
+	 * @param	int	$seconds
+	 * @return	void
+	 */
+	public function timeout($seconds = 5)
+	{
+		if ($this->client !== NULL && is_int($seconds))
+		{
+			$this->client->timeout = $seconds;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Methods
+	 *
+	 * @param	string	$function	Method name
+	 * @return	void
+	 */
+	public function method($function)
+	{
+		$this->method = $function;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Take Array of Data and Create Objects
+	 *
+	 * @param	array	$incoming
+	 * @return	void
+	 */
+	public function request($incoming)
+	{
+		if ( ! is_array($incoming))
+		{
+			// Send Error
+			return;
+		}
+
+		$this->data = array();
+
+		foreach ($incoming as $key => $value)
+		{
+			$this->data[$key] = $this->values_parsing($value);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set Debug
+	 *
+	 * @param	bool	$flag
+	 * @return	void
+	 */
+	public function set_debug($flag = TRUE)
+	{
+		$this->debug = ($flag === TRUE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Values Parsing
+	 *
+	 * @param	mixed	$value
+	 * @return	object
+	 */
+	public function values_parsing($value)
+	{
+		if (is_array($value) && array_key_exists(0, $value))
+		{
+			if ( ! isset($value[1], $this->xmlrpcTypes[$value[1]]))
+			{
+				$temp = new XML_RPC_Values($value[0], (is_array($value[0]) ? 'array' : 'string'));
+			}
+			else
+			{
+				if (is_array($value[0]) && ($value[1] === 'struct' OR $value[1] === 'array'))
+				{
+					foreach (array_keys($value[0]) as $k)
+					{
+						$value[0][$k] = $this->values_parsing($value[0][$k]);
+					}
+				}
+
+				$temp = new XML_RPC_Values($value[0], $value[1]);
+			}
+		}
+		else
+		{
+			$temp = new XML_RPC_Values($value, 'string');
+		}
+
+		return $temp;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sends XML-RPC Request
+	 *
+	 * @return	bool
+	 */
+	public function send_request()
+	{
+		$this->message = new XML_RPC_Message($this->method, $this->data);
+		$this->message->debug = $this->debug;
+
+		if ( ! $this->result = $this->client->send($this->message) OR ! is_object($this->result->val))
+		{
+			$this->error = $this->result->errstr;
+			return FALSE;
+		}
+
+		$this->response = $this->result->decode();
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns Error
+	 *
+	 * @return	string
+	 */
+	public function display_error()
+	{
+		return $this->error;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Returns Remote Server Response
+	 *
+	 * @return	string
+	 */
+	public function display_response()
+	{
+		return $this->response;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Sends an Error Message for Server Request
+	 *
+	 * @param	int	$number
+	 * @param	string	$message
+	 * @return	object
+	 */
+	public function send_error_message($number, $message)
+	{
+		return new XML_RPC_Response(0, $number, $message);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send Response for Server Request
+	 *
+	 * @param	array	$response
+	 * @return	object
+	 */
+	public function send_response($response)
+	{
+		// $response should be array of values, which will be parsed
+		// based on their data and type into a valid group of XML-RPC values
+		return new XML_RPC_Response($this->values_parsing($response));
+	}
+
+} // END XML_RPC Class
+
+/**
+ * XML-RPC Client class
+ *
+ * @category	XML-RPC
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/xmlrpc.html
+ */
+class XML_RPC_Client extends CI_Xmlrpc
+{
+	/**
+	 * Path
+	 *
+	 * @var	string
+	 */
+	public $path			= '';
+
+	/**
+	 * Server hostname
+	 *
+	 * @var	string
+	 */
+	public $server			= '';
+
+	/**
+	 * Server port
+	 *
+	 * @var	int
+	 */
+	public $port			= 80;
+
+	/**
+	 *
+	 * Server username
+	 *
+	 * @var	string
+	 */
+	public $username;
+
+	/**
+	 * Server password
+	 *
+	 * @var	string
+	 */
+	public $password;
+
+	/**
+	 * Proxy hostname
+	 *
+	 * @var	string
+	 */
+	public $proxy			= FALSE;
+
+	/**
+	 * Proxy port
+	 *
+	 * @var	int
+	 */
+	public $proxy_port		= 8080;
+
+	/**
+	 * Error number
+	 *
+	 * @var	string
+	 */
+	public $errno			= '';
+
+	/**
+	 * Error message
+	 *
+	 * @var	string
+	 */
+	public $errstring		= '';
+
+	/**
+	 * Timeout in seconds
+	 *
+	 * @var	int
+	 */
+	public $timeout		= 5;
+
+	/**
+	 * No Multicall flag
+	 *
+	 * @var	bool
+	 */
+	public $no_multicall	= FALSE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	string	$path
+	 * @param	object	$server
+	 * @param	int	$port
+	 * @param	string	$proxy
+	 * @param	int	$proxy_port
+	 * @return	void
+	 */
+	public function __construct($path, $server, $port = 80, $proxy = FALSE, $proxy_port = 8080)
+	{
+		parent::__construct();
+
+		$url = parse_url('http://'.$server);
+
+		if (isset($url['user'], $url['pass']))
+		{
+			$this->username = $url['user'];
+			$this->password = $url['pass'];
+		}
+
+		$this->port = $port;
+		$this->server = $url['host'];
+		$this->path = $path;
+		$this->proxy = $proxy;
+		$this->proxy_port = $proxy_port;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send message
+	 *
+	 * @param	mixed	$msg
+	 * @return	object
+	 */
+	public function send($msg)
+	{
+		if (is_array($msg))
+		{
+			// Multi-call disabled
+			return new XML_RPC_Response(0, $this->xmlrpcerr['multicall_recursion'], $this->xmlrpcstr['multicall_recursion']);
+		}
+
+		return $this->sendPayload($msg);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Send payload
+	 *
+	 * @param	object	$msg
+	 * @return	object
+	 */
+	public function sendPayload($msg)
+	{
+		if ($this->proxy === FALSE)
+		{
+			$server = $this->server;
+			$port = $this->port;
+		}
+		else
+		{
+			$server = $this->proxy;
+			$port = $this->proxy_port;
+		}
+
+		$fp = @fsockopen($server, $port, $this->errno, $this->errstring, $this->timeout);
+
+		if ( ! is_resource($fp))
+		{
+			error_log($this->xmlrpcstr['http_error']);
+			return new XML_RPC_Response(0, $this->xmlrpcerr['http_error'], $this->xmlrpcstr['http_error']);
+		}
+
+		if (empty($msg->payload))
+		{
+			// $msg = XML_RPC_Messages
+			$msg->createPayload();
+		}
+
+		$r = "\r\n";
+		$op = 'POST '.$this->path.' HTTP/1.0'.$r
+			.'Host: '.$this->server.$r
+			.'Content-Type: text/xml'.$r
+			.(isset($this->username, $this->password) ? 'Authorization: Basic '.base64_encode($this->username.':'.$this->password).$r : '')
+			.'User-Agent: '.$this->xmlrpcName.$r
+			.'Content-Length: '.strlen($msg->payload).$r.$r
+			.$msg->payload;
+
+		stream_set_timeout($fp, $this->timeout); // set timeout for subsequent operations
+
+		for ($written = $timestamp = 0, $length = strlen($op); $written < $length; $written += $result)
+		{
+			if (($result = fwrite($fp, substr($op, $written))) === FALSE)
+			{
+				break;
+			}
+			// See https://bugs.php.net/bug.php?id=39598 and https://secure.php.net/manual/en/function.fwrite.php#96951
+			elseif ($result === 0)
+			{
+				if ($timestamp === 0)
+				{
+					$timestamp = time();
+				}
+				elseif ($timestamp < (time() - $this->timeout))
+				{
+					$result = FALSE;
+					break;
+				}
+			}
+			else
+			{
+				$timestamp = 0;
+			}
+		}
+
+		if ($result === FALSE)
+		{
+			error_log($this->xmlrpcstr['http_error']);
+			return new XML_RPC_Response(0, $this->xmlrpcerr['http_error'], $this->xmlrpcstr['http_error']);
+		}
+
+		$resp = $msg->parseResponse($fp);
+		fclose($fp);
+		return $resp;
+	}
+
+} // END XML_RPC_Client Class
+
+/**
+ * XML-RPC Response class
+ *
+ * @category	XML-RPC
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/xmlrpc.html
+ */
+class XML_RPC_Response
+{
+
+	/**
+	 * Value
+	 *
+	 * @var	mixed
+	 */
+	public $val		= 0;
+
+	/**
+	 * Error number
+	 *
+	 * @var	int
+	 */
+	public $errno		= 0;
+
+	/**
+	 * Error message
+	 *
+	 * @var	string
+	 */
+	public $errstr		= '';
+
+	/**
+	 * Headers list
+	 *
+	 * @var	array
+	 */
+	public $headers		= array();
+
+	/**
+	 * XSS Filter flag
+	 *
+	 * @var	bool
+	 */
+	public $xss_clean	= TRUE;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	mixed	$val
+	 * @param	int	$code
+	 * @param	string	$fstr
+	 * @return	void
+	 */
+	public function __construct($val, $code = 0, $fstr = '')
+	{
+		if ($code !== 0)
+		{
+			// error
+			$this->errno = $code;
+			$this->errstr = htmlspecialchars($fstr, ENT_XML1 | ENT_NOQUOTES, 'UTF-8');
+		}
+		elseif ( ! is_object($val))
+		{
+			// programmer error, not an object
+			error_log("Invalid type '".gettype($val)."' (value: ".$val.') passed to XML_RPC_Response. Defaulting to empty value.');
+			$this->val = new XML_RPC_Values();
+		}
+		else
+		{
+			$this->val = $val;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fault code
+	 *
+	 * @return	int
+	 */
+	public function faultCode()
+	{
+		return $this->errno;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fault string
+	 *
+	 * @return	string
+	 */
+	public function faultString()
+	{
+		return $this->errstr;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Value
+	 *
+	 * @return	mixed
+	 */
+	public function value()
+	{
+		return $this->val;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prepare response
+	 *
+	 * @return	string	xml
+	 */
+	public function prepare_response()
+	{
+		return "<methodResponse>\n"
+			.($this->errno
+				? '<fault>
+	<value>
+		<struct>
+			<member>
+				<name>faultCode</name>
+				<value><int>'.$this->errno.'</int></value>
+			</member>
+			<member>
+				<name>faultString</name>
+				<value><string>'.$this->errstr.'</string></value>
+			</member>
+		</struct>
+	</value>
+</fault>'
+				: "<params>\n<param>\n".$this->val->serialize_class()."</param>\n</params>")
+			."\n</methodResponse>";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decode
+	 *
+	 * @param	mixed	$array
+	 * @return	array
+	 */
+	public function decode($array = NULL)
+	{
+		$CI =& get_instance();
+
+		if (is_array($array))
+		{
+			foreach ($array as $key => &$value)
+			{
+				if (is_array($value))
+				{
+					$array[$key] = $this->decode($value);
+				}
+				elseif ($this->xss_clean)
+				{
+					$array[$key] = $CI->security->xss_clean($value);
+				}
+			}
+
+			return $array;
+		}
+
+		$result = $this->xmlrpc_decoder($this->val);
+
+		if (is_array($result))
+		{
+			$result = $this->decode($result);
+		}
+		elseif ($this->xss_clean)
+		{
+			$result = $CI->security->xss_clean($result);
+		}
+
+		return $result;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * XML-RPC Object to PHP Types
+	 *
+	 * @param	object
+	 * @return	array
+	 */
+	public function xmlrpc_decoder($xmlrpc_val)
+	{
+		$kind = $xmlrpc_val->kindOf();
+
+		if ($kind === 'scalar')
+		{
+			return $xmlrpc_val->scalarval();
+		}
+		elseif ($kind === 'array')
+		{
+			reset($xmlrpc_val->me);
+			$b = current($xmlrpc_val->me);
+			$arr = array();
+
+			for ($i = 0, $size = count($b); $i < $size; $i++)
+			{
+				$arr[] = $this->xmlrpc_decoder($xmlrpc_val->me['array'][$i]);
+			}
+			return $arr;
+		}
+		elseif ($kind === 'struct')
+		{
+			reset($xmlrpc_val->me['struct']);
+			$arr = array();
+
+			foreach ($xmlrpc_val->me['struct'] as $key => &$value)
+			{
+				$arr[$key] = $this->xmlrpc_decoder($value);
+			}
+
+			return $arr;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * ISO-8601 time to server or UTC time
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	int	unix timestamp
+	 */
+	public function iso8601_decode($time, $utc = FALSE)
+	{
+		// Return a time in the localtime, or UTC
+		$t = 0;
+		if (preg_match('/([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})/', $time, $regs))
+		{
+			$fnc = ($utc === TRUE) ? 'gmmktime' : 'mktime';
+			$t = $fnc($regs[4], $regs[5], $regs[6], $regs[2], $regs[3], $regs[1]);
+		}
+		return $t;
+	}
+
+} // END XML_RPC_Response Class
+
+/**
+ * XML-RPC Message class
+ *
+ * @category	XML-RPC
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/xmlrpc.html
+ */
+class XML_RPC_Message extends CI_Xmlrpc
+{
+
+	/**
+	 * Payload
+	 *
+	 * @var	string
+	 */
+	public $payload;
+
+	/**
+	 * Method name
+	 *
+	 * @var	string
+	 */
+	public $method_name;
+
+	/**
+	 * Parameter list
+	 *
+	 * @var	array
+	 */
+	public $params		= array();
+
+	/**
+	 * XH?
+	 *
+	 * @var	array
+	 */
+	public $xh		= array();
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	string	$method
+	 * @param	array	$pars
+	 * @return	void
+	 */
+	public function __construct($method, $pars = FALSE)
+	{
+		parent::__construct();
+
+		$this->method_name = $method;
+		if (is_array($pars) && count($pars) > 0)
+		{
+			for ($i = 0, $c = count($pars); $i < $c; $i++)
+			{
+				// $pars[$i] = XML_RPC_Values
+				$this->params[] = $pars[$i];
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Payload to Send
+	 *
+	 * @return	void
+	 */
+	public function createPayload()
+	{
+		$this->payload = '<?xml version="1.0"?'.">\r\n<methodCall>\r\n"
+				.'<methodName>'.$this->method_name."</methodName>\r\n"
+				."<params>\r\n";
+
+		for ($i = 0, $c = count($this->params); $i < $c; $i++)
+		{
+			// $p = XML_RPC_Values
+			$p = $this->params[$i];
+			$this->payload .= "<param>\r\n".$p->serialize_class()."</param>\r\n";
+		}
+
+		$this->payload .= "</params>\r\n</methodCall>\r\n";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse External XML-RPC Server's Response
+	 *
+	 * @param	resource
+	 * @return	object
+	 */
+	public function parseResponse($fp)
+	{
+		$data = '';
+
+		while ($datum = fread($fp, 4096))
+		{
+			$data .= $datum;
+		}
+
+		// Display HTTP content for debugging
+		if ($this->debug === TRUE)
+		{
+			echo "<pre>---DATA---\n".htmlspecialchars($data)."\n---END DATA---\n\n</pre>";
+		}
+
+		// Check for data
+		if ($data === '')
+		{
+			error_log($this->xmlrpcstr['no_data']);
+			return new XML_RPC_Response(0, $this->xmlrpcerr['no_data'], $this->xmlrpcstr['no_data']);
+		}
+
+		// Check for HTTP 200 Response
+		if (strpos($data, 'HTTP') === 0 && ! preg_match('/^HTTP\/[0-9\.]+ 200 /', $data))
+		{
+			$errstr = substr($data, 0, strpos($data, "\n")-1);
+			return new XML_RPC_Response(0, $this->xmlrpcerr['http_error'], $this->xmlrpcstr['http_error'].' ('.$errstr.')');
+		}
+
+		//-------------------------------------
+		// Create and Set Up XML Parser
+		//-------------------------------------
+
+		$parser = xml_parser_create($this->xmlrpc_defencoding);
+		$pname = (string) $parser;
+		$this->xh[$pname] = array(
+			'isf'		=> 0,
+			'ac'		=> '',
+			'headers'	=> array(),
+			'stack'		=> array(),
+			'valuestack'	=> array(),
+			'isf_reason'	=> 0
+		);
+
+		xml_set_object($parser, $this);
+		xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, TRUE);
+		xml_set_element_handler($parser, 'open_tag', 'closing_tag');
+		xml_set_character_data_handler($parser, 'character_data');
+		//xml_set_default_handler($parser, 'default_handler');
+
+		// Get headers
+		$lines = explode("\r\n", $data);
+		while (($line = array_shift($lines)))
+		{
+			if (strlen($line) < 1)
+			{
+				break;
+			}
+			$this->xh[$pname]['headers'][] = $line;
+		}
+		$data = implode("\r\n", $lines);
+
+		// Parse XML data
+		if ( ! xml_parse($parser, $data, TRUE))
+		{
+			$errstr = sprintf('XML error: %s at line %d',
+						xml_error_string(xml_get_error_code($parser)),
+						xml_get_current_line_number($parser));
+
+			$r = new XML_RPC_Response(0, $this->xmlrpcerr['invalid_return'], $this->xmlrpcstr['invalid_return']);
+			xml_parser_free($parser);
+			return $r;
+		}
+		xml_parser_free($parser);
+
+		// Got ourselves some badness, it seems
+		if ($this->xh[$pname]['isf'] > 1)
+		{
+			if ($this->debug === TRUE)
+			{
+				echo "---Invalid Return---\n".$this->xh[$pname]['isf_reason']."---Invalid Return---\n\n";
+			}
+
+			return new XML_RPC_Response(0, $this->xmlrpcerr['invalid_return'], $this->xmlrpcstr['invalid_return'].' '.$this->xh[$pname]['isf_reason']);
+		}
+		elseif ( ! is_object($this->xh[$pname]['value']))
+		{
+			return new XML_RPC_Response(0, $this->xmlrpcerr['invalid_return'], $this->xmlrpcstr['invalid_return'].' '.$this->xh[$pname]['isf_reason']);
+		}
+
+		// Display XML content for debugging
+		if ($this->debug === TRUE)
+		{
+			echo '<pre>';
+
+			if (count($this->xh[$pname]['headers']) > 0)
+			{
+				echo "---HEADERS---\n";
+				foreach ($this->xh[$pname]['headers'] as $header)
+				{
+					echo $header."\n";
+				}
+				echo "---END HEADERS---\n\n";
+			}
+
+			echo "---DATA---\n".htmlspecialchars($data)."\n---END DATA---\n\n---PARSED---\n";
+			var_dump($this->xh[$pname]['value']);
+			echo "\n---END PARSED---</pre>";
+		}
+
+		// Send response
+		$v = $this->xh[$pname]['value'];
+		if ($this->xh[$pname]['isf'])
+		{
+			$errno_v = $v->me['struct']['faultCode'];
+			$errstr_v = $v->me['struct']['faultString'];
+			$errno = $errno_v->scalarval();
+
+			if ($errno === 0)
+			{
+				// FAULT returned, errno needs to reflect that
+				$errno = -1;
+			}
+
+			$r = new XML_RPC_Response($v, $errno, $errstr_v->scalarval());
+		}
+		else
+		{
+			$r = new XML_RPC_Response($v);
+		}
+
+		$r->headers = $this->xh[$pname]['headers'];
+		return $r;
+	}
+
+	// --------------------------------------------------------------------
+
+	// ------------------------------------
+	//  Begin Return Message Parsing section
+	// ------------------------------------
+
+	// quick explanation of components:
+	//   ac - used to accumulate values
+	//   isf - used to indicate a fault
+	//   lv - used to indicate "looking for a value": implements
+	//		the logic to allow values with no types to be strings
+	//   params - used to store parameters in method calls
+	//   method - used to store method name
+	//	 stack - array with parent tree of the xml element,
+	//			 used to validate the nesting of elements
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Start Element Handler
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	void
+	 */
+	public function open_tag($the_parser, $name)
+	{
+		$the_parser = (string) $the_parser;
+
+		// If invalid nesting, then return
+		if ($this->xh[$the_parser]['isf'] > 1) return;
+
+		// Evaluate and check for correct nesting of XML elements
+		if (count($this->xh[$the_parser]['stack']) === 0)
+		{
+			if ($name !== 'METHODRESPONSE' && $name !== 'METHODCALL')
+			{
+				$this->xh[$the_parser]['isf'] = 2;
+				$this->xh[$the_parser]['isf_reason'] = 'Top level XML-RPC element is missing';
+				return;
+			}
+		}
+		// not top level element: see if parent is OK
+		elseif ( ! in_array($this->xh[$the_parser]['stack'][0], $this->valid_parents[$name], TRUE))
+		{
+			$this->xh[$the_parser]['isf'] = 2;
+			$this->xh[$the_parser]['isf_reason'] = 'XML-RPC element '.$name.' cannot be child of '.$this->xh[$the_parser]['stack'][0];
+			return;
+		}
+
+		switch ($name)
+		{
+			case 'STRUCT':
+			case 'ARRAY':
+				// Creates array for child elements
+				$cur_val = array('value' => array(), 'type' => $name);
+				array_unshift($this->xh[$the_parser]['valuestack'], $cur_val);
+				break;
+			case 'METHODNAME':
+			case 'NAME':
+				$this->xh[$the_parser]['ac'] = '';
+				break;
+			case 'FAULT':
+				$this->xh[$the_parser]['isf'] = 1;
+				break;
+			case 'PARAM':
+				$this->xh[$the_parser]['value'] = NULL;
+				break;
+			case 'VALUE':
+				$this->xh[$the_parser]['vt'] = 'value';
+				$this->xh[$the_parser]['ac'] = '';
+				$this->xh[$the_parser]['lv'] = 1;
+				break;
+			case 'I4':
+			case 'INT':
+			case 'STRING':
+			case 'BOOLEAN':
+			case 'DOUBLE':
+			case 'DATETIME.ISO8601':
+			case 'BASE64':
+				if ($this->xh[$the_parser]['vt'] !== 'value')
+				{
+					//two data elements inside a value: an error occurred!
+					$this->xh[$the_parser]['isf'] = 2;
+					$this->xh[$the_parser]['isf_reason'] = 'There is a '.$name.' element following a '
+										.$this->xh[$the_parser]['vt'].' element inside a single value';
+					return;
+				}
+
+				$this->xh[$the_parser]['ac'] = '';
+				break;
+			case 'MEMBER':
+				// Set name of <member> to nothing to prevent errors later if no <name> is found
+				$this->xh[$the_parser]['valuestack'][0]['name'] = '';
+
+				// Set NULL value to check to see if value passed for this param/member
+				$this->xh[$the_parser]['value'] = NULL;
+				break;
+			case 'DATA':
+			case 'METHODCALL':
+			case 'METHODRESPONSE':
+			case 'PARAMS':
+				// valid elements that add little to processing
+				break;
+			default:
+				/// An Invalid Element is Found, so we have trouble
+				$this->xh[$the_parser]['isf'] = 2;
+				$this->xh[$the_parser]['isf_reason'] = 'Invalid XML-RPC element found: '.$name;
+				break;
+		}
+
+		// Add current element name to stack, to allow validation of nesting
+		array_unshift($this->xh[$the_parser]['stack'], $name);
+
+		$name === 'VALUE' OR $this->xh[$the_parser]['lv'] = 0;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * End Element Handler
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	void
+	 */
+	public function closing_tag($the_parser, $name)
+	{
+		$the_parser = (string) $the_parser;
+
+		if ($this->xh[$the_parser]['isf'] > 1) return;
+
+		// Remove current element from stack and set variable
+		// NOTE: If the XML validates, then we do not have to worry about
+		// the opening and closing of elements. Nesting is checked on the opening
+		// tag so we be safe there as well.
+
+		$curr_elem = array_shift($this->xh[$the_parser]['stack']);
+
+		switch ($name)
+		{
+			case 'STRUCT':
+			case 'ARRAY':
+				$cur_val = array_shift($this->xh[$the_parser]['valuestack']);
+				$this->xh[$the_parser]['value'] = isset($cur_val['values']) ? $cur_val['values'] : array();
+				$this->xh[$the_parser]['vt']	= strtolower($name);
+				break;
+			case 'NAME':
+				$this->xh[$the_parser]['valuestack'][0]['name'] = $this->xh[$the_parser]['ac'];
+				break;
+			case 'BOOLEAN':
+			case 'I4':
+			case 'INT':
+			case 'STRING':
+			case 'DOUBLE':
+			case 'DATETIME.ISO8601':
+			case 'BASE64':
+				$this->xh[$the_parser]['vt'] = strtolower($name);
+
+				if ($name === 'STRING')
+				{
+					$this->xh[$the_parser]['value'] = $this->xh[$the_parser]['ac'];
+				}
+				elseif ($name === 'DATETIME.ISO8601')
+				{
+					$this->xh[$the_parser]['vt']	= $this->xmlrpcDateTime;
+					$this->xh[$the_parser]['value'] = $this->xh[$the_parser]['ac'];
+				}
+				elseif ($name === 'BASE64')
+				{
+					$this->xh[$the_parser]['value'] = base64_decode($this->xh[$the_parser]['ac']);
+				}
+				elseif ($name === 'BOOLEAN')
+				{
+					// Translated BOOLEAN values to TRUE AND FALSE
+					$this->xh[$the_parser]['value'] = (bool) $this->xh[$the_parser]['ac'];
+				}
+				elseif ($name=='DOUBLE')
+				{
+					// we have a DOUBLE
+					// we must check that only 0123456789-.<space> are characters here
+					$this->xh[$the_parser]['value'] = preg_match('/^[+-]?[eE0-9\t \.]+$/', $this->xh[$the_parser]['ac'])
+										? (float) $this->xh[$the_parser]['ac']
+										: 'ERROR_NON_NUMERIC_FOUND';
+				}
+				else
+				{
+					// we have an I4/INT
+					// we must check that only 0123456789-<space> are characters here
+					$this->xh[$the_parser]['value'] = preg_match('/^[+-]?[0-9\t ]+$/', $this->xh[$the_parser]['ac'])
+										? (int) $this->xh[$the_parser]['ac']
+										: 'ERROR_NON_NUMERIC_FOUND';
+				}
+				$this->xh[$the_parser]['ac'] = '';
+				$this->xh[$the_parser]['lv'] = 3; // indicate we've found a value
+				break;
+			case 'VALUE':
+				// This if() detects if no scalar was inside <VALUE></VALUE>
+				if ($this->xh[$the_parser]['vt'] == 'value')
+				{
+					$this->xh[$the_parser]['value']	= $this->xh[$the_parser]['ac'];
+					$this->xh[$the_parser]['vt']	= $this->xmlrpcString;
+				}
+
+				// build the XML-RPC value out of the data received, and substitute it
+				$temp = new XML_RPC_Values($this->xh[$the_parser]['value'], $this->xh[$the_parser]['vt']);
+
+				if (count($this->xh[$the_parser]['valuestack']) && $this->xh[$the_parser]['valuestack'][0]['type'] === 'ARRAY')
+				{
+					// Array
+					$this->xh[$the_parser]['valuestack'][0]['values'][] = $temp;
+				}
+				else
+				{
+					// Struct
+					$this->xh[$the_parser]['value'] = $temp;
+				}
+				break;
+			case 'MEMBER':
+				$this->xh[$the_parser]['ac'] = '';
+
+				// If value add to array in the stack for the last element built
+				if ($this->xh[$the_parser]['value'])
+				{
+					$this->xh[$the_parser]['valuestack'][0]['values'][$this->xh[$the_parser]['valuestack'][0]['name']] = $this->xh[$the_parser]['value'];
+				}
+				break;
+			case 'DATA':
+				$this->xh[$the_parser]['ac'] = '';
+				break;
+			case 'PARAM':
+				if ($this->xh[$the_parser]['value'])
+				{
+					$this->xh[$the_parser]['params'][] = $this->xh[$the_parser]['value'];
+				}
+				break;
+			case 'METHODNAME':
+				$this->xh[$the_parser]['method'] = ltrim($this->xh[$the_parser]['ac']);
+				break;
+			case 'PARAMS':
+			case 'FAULT':
+			case 'METHODCALL':
+			case 'METHORESPONSE':
+				// We're all good kids with nuthin' to do
+				break;
+			default:
+				// End of an Invalid Element. Taken care of during the opening tag though
+				break;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse character data
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	void
+	 */
+	public function character_data($the_parser, $data)
+	{
+		$the_parser = (string) $the_parser;
+
+		if ($this->xh[$the_parser]['isf'] > 1) return; // XML Fault found already
+
+		// If a value has not been found
+		if ($this->xh[$the_parser]['lv'] !== 3)
+		{
+			if ($this->xh[$the_parser]['lv'] === 1)
+			{
+				$this->xh[$the_parser]['lv'] = 2; // Found a value
+			}
+
+			if ( ! isset($this->xh[$the_parser]['ac']))
+			{
+				$this->xh[$the_parser]['ac'] = '';
+			}
+
+			$this->xh[$the_parser]['ac'] .= $data;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add parameter
+	 *
+	 * @param	mixed
+	 * @return	void
+	 */
+	public function addParam($par)
+	{
+		$this->params[] = $par;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Output parameters
+	 *
+	 * @param	array	$array
+	 * @return	array
+	 */
+	public function output_parameters(array $array = array())
+	{
+		$CI =& get_instance();
+
+		if ( ! empty($array))
+		{
+			foreach ($array as $key => &$value)
+			{
+				if (is_array($value))
+				{
+					$array[$key] = $this->output_parameters($value);
+				}
+				elseif ($key !== 'bits' && $this->xss_clean)
+				{
+					// 'bits' is for the MetaWeblog API image bits
+					// @todo - this needs to be made more general purpose
+					$array[$key] = $CI->security->xss_clean($value);
+				}
+			}
+
+			return $array;
+		}
+
+		$parameters = array();
+
+		for ($i = 0, $c = count($this->params); $i < $c; $i++)
+		{
+			$a_param = $this->decode_message($this->params[$i]);
+
+			if (is_array($a_param))
+			{
+				$parameters[] = $this->output_parameters($a_param);
+			}
+			else
+			{
+				$parameters[] = ($this->xss_clean) ? $CI->security->xss_clean($a_param) : $a_param;
+			}
+		}
+
+		return $parameters;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Decode message
+	 *
+	 * @param	object
+	 * @return	mixed
+	 */
+	public function decode_message($param)
+	{
+		$kind = $param->kindOf();
+
+		if ($kind === 'scalar')
+		{
+			return $param->scalarval();
+		}
+		elseif ($kind === 'array')
+		{
+			reset($param->me);
+			$b = current($param->me);
+			$arr = array();
+
+			for ($i = 0, $c = count($b); $i < $c; $i++)
+			{
+				$arr[] = $this->decode_message($param->me['array'][$i]);
+			}
+
+			return $arr;
+		}
+		elseif ($kind === 'struct')
+		{
+			reset($param->me['struct']);
+			$arr = array();
+
+			foreach ($param->me['struct'] as $key => &$value)
+			{
+				$arr[$key] = $this->decode_message($value);
+			}
+
+			return $arr;
+		}
+	}
+
+} // END XML_RPC_Message Class
+
+/**
+ * XML-RPC Values class
+ *
+ * @category	XML-RPC
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/xmlrpc.html
+ */
+class XML_RPC_Values extends CI_Xmlrpc
+{
+	/**
+	 * Value data
+	 *
+	 * @var	array
+	 */
+	public $me	= array();
+
+	/**
+	 * Value type
+	 *
+	 * @var	int
+	 */
+	public $mytype	= 0;
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Constructor
+	 *
+	 * @param	mixed	$val
+	 * @param	string	$type
+	 * @return	void
+	 */
+	public function __construct($val = -1, $type = '')
+	{
+		parent::__construct();
+
+		if ($val !== -1 OR $type !== '')
+		{
+			$type = $type === '' ? 'string' : $type;
+
+			if ($this->xmlrpcTypes[$type] == 1)
+			{
+				$this->addScalar($val, $type);
+			}
+			elseif ($this->xmlrpcTypes[$type] == 2)
+			{
+				$this->addArray($val);
+			}
+			elseif ($this->xmlrpcTypes[$type] == 3)
+			{
+				$this->addStruct($val);
+			}
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add scalar value
+	 *
+	 * @param	scalar
+	 * @param	string
+	 * @return	int
+	 */
+	public function addScalar($val, $type = 'string')
+	{
+		$typeof = $this->xmlrpcTypes[$type];
+
+		if ($this->mytype === 1)
+		{
+			echo '<strong>XML_RPC_Values</strong>: scalar can have only one value<br />';
+			return 0;
+		}
+
+		if ($typeof != 1)
+		{
+			echo '<strong>XML_RPC_Values</strong>: not a scalar type (${typeof})<br />';
+			return 0;
+		}
+
+		if ($type === $this->xmlrpcBoolean)
+		{
+			$val = (int) (strcasecmp($val, 'true') === 0 OR $val === 1 OR ($val === TRUE && strcasecmp($val, 'false')));
+		}
+
+		if ($this->mytype === 2)
+		{
+			// adding to an array here
+			$ar = $this->me['array'];
+			$ar[] = new XML_RPC_Values($val, $type);
+			$this->me['array'] = $ar;
+		}
+		else
+		{
+			// a scalar, so set the value and remember we're scalar
+			$this->me[$type] = $val;
+			$this->mytype = $typeof;
+		}
+
+		return 1;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add array value
+	 *
+	 * @param	array
+	 * @return	int
+	 */
+	public function addArray($vals)
+	{
+		if ($this->mytype !== 0)
+		{
+			echo '<strong>XML_RPC_Values</strong>: already initialized as a ['.$this->kindOf().']<br />';
+			return 0;
+		}
+
+		$this->mytype = $this->xmlrpcTypes['array'];
+		$this->me['array'] = $vals;
+		return 1;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add struct value
+	 *
+	 * @param	object
+	 * @return	int
+	 */
+	public function addStruct($vals)
+	{
+		if ($this->mytype !== 0)
+		{
+			echo '<strong>XML_RPC_Values</strong>: already initialized as a ['.$this->kindOf().']<br />';
+			return 0;
+		}
+		$this->mytype = $this->xmlrpcTypes['struct'];
+		$this->me['struct'] = $vals;
+		return 1;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get value type
+	 *
+	 * @return	string
+	 */
+	public function kindOf()
+	{
+		switch ($this->mytype)
+		{
+			case 3: return 'struct';
+			case 2: return 'array';
+			case 1: return 'scalar';
+			default: return 'undef';
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Serialize data
+	 *
+	 * @param	string
+	 * @param	mixed
+	 * @return	string
+	 */
+	public function serializedata($typ, $val)
+	{
+		$rs = '';
+
+		switch ($this->xmlrpcTypes[$typ])
+		{
+			case 3:
+				// struct
+				$rs .= "<struct>\n";
+				reset($val);
+				foreach ($val as $key2 => &$val2)
+				{
+					$rs .= "<member>\n<name>{$key2}</name>\n".$this->serializeval($val2)."</member>\n";
+				}
+				$rs .= '</struct>';
+				break;
+			case 2:
+				// array
+				$rs .= "<array>\n<data>\n";
+				for ($i = 0, $c = count($val); $i < $c; $i++)
+				{
+					$rs .= $this->serializeval($val[$i]);
+				}
+				$rs .= "</data>\n</array>\n";
+				break;
+			case 1:
+				// others
+				switch ($typ)
+				{
+					case $this->xmlrpcBase64:
+						$rs .= '<'.$typ.'>'.base64_encode( (string) $val).'</'.$typ.">\n";
+						break;
+					case $this->xmlrpcBoolean:
+						$rs .= '<'.$typ.'>'.( (bool) $val ? '1' : '0').'</'.$typ.">\n";
+						break;
+					case $this->xmlrpcString:
+						$rs .= '<'.$typ.'>'.htmlspecialchars( (string) $val).'</'.$typ.">\n";
+						break;
+					default:
+						$rs .= '<'.$typ.'>'.$val.'</'.$typ.">\n";
+						break;
+				}
+			default:
+				break;
+		}
+
+		return $rs;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Serialize class
+	 *
+	 * @return	string
+	 */
+	public function serialize_class()
+	{
+		return $this->serializeval($this);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Serialize value
+	 *
+	 * @param	object
+	 * @return	string
+	 */
+	public function serializeval($o)
+	{
+		$array = $o->me;
+		list($value, $type) = array(reset($array), key($array));
+		return "<value>\n".$this->serializedata($type, $value)."</value>\n";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Scalar value
+	 *
+	 * @return	mixed
+	 */
+	public function scalarval()
+	{
+		return reset($this->me);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Encode time in ISO-8601 form.
+	 * Useful for sending time in XML-RPC
+	 *
+	 * @param	int	unix timestamp
+	 * @param	bool
+	 * @return	string
+	*/
+	public function iso8601_encode($time, $utc = FALSE)
+	{
+		return ($utc) ? strftime('%Y%m%dT%H:%i:%s', $time) : gmstrftime('%Y%m%dT%H:%i:%s', $time);
+	}
+
+} // END XML_RPC_Values Class
diff --git a/system/libraries/Xmlrpcs.php b/system/libraries/Xmlrpcs.php
new file mode 100644
index 00000000..e20bf483
--- /dev/null
+++ b/system/libraries/Xmlrpcs.php
@@ -0,0 +1,619 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+if ( ! function_exists('xml_parser_create'))
+{
+	show_error('Your PHP installation does not support XML');
+}
+
+if ( ! class_exists('CI_Xmlrpc', FALSE))
+{
+	show_error('You must load the Xmlrpc class before loading the Xmlrpcs class in order to create a server.');
+}
+
+// ------------------------------------------------------------------------
+
+/**
+ * XML-RPC server class
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	XML-RPC
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/xmlrpc.html
+ */
+class CI_Xmlrpcs extends CI_Xmlrpc {
+
+	/**
+	 * Array of methods mapped to function names and signatures
+	 *
+	 * @var array
+	 */
+	public $methods = array();
+
+	/**
+	 * Debug Message
+	 *
+	 * @var string
+	 */
+	public $debug_msg = '';
+
+	/**
+	 * XML RPC Server methods
+	 *
+	 * @var array
+	 */
+	public $system_methods	= array();
+
+	/**
+	 * Configuration object
+	 *
+	 * @var object
+	 */
+	public $object = FALSE;
+
+	/**
+	 * Initialize XMLRPC class
+	 *
+	 * @param	array	$config
+	 * @return	void
+	 */
+	public function __construct($config = array())
+	{
+		parent::__construct();
+		$this->set_system_methods();
+
+		if (isset($config['functions']) && is_array($config['functions']))
+		{
+			$this->methods = array_merge($this->methods, $config['functions']);
+		}
+
+		log_message('info', 'XML-RPC Server Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize Prefs and Serve
+	 *
+	 * @param	mixed
+	 * @return	void
+	 */
+	public function initialize($config = array())
+	{
+		if (isset($config['functions']) && is_array($config['functions']))
+		{
+			$this->methods = array_merge($this->methods, $config['functions']);
+		}
+
+		if (isset($config['debug']))
+		{
+			$this->debug = $config['debug'];
+		}
+
+		if (isset($config['object']) && is_object($config['object']))
+		{
+			$this->object = $config['object'];
+		}
+
+		if (isset($config['xss_clean']))
+		{
+			$this->xss_clean = $config['xss_clean'];
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Setting of System Methods
+	 *
+	 * @return	void
+	 */
+	public function set_system_methods()
+	{
+		$this->methods = array(
+					'system.listMethods'	 => array(
+										'function' => 'this.listMethods',
+										'signature' => array(array($this->xmlrpcArray, $this->xmlrpcString), array($this->xmlrpcArray)),
+										'docstring' => 'Returns an array of available methods on this server'),
+					'system.methodHelp'	 => array(
+										'function' => 'this.methodHelp',
+										'signature' => array(array($this->xmlrpcString, $this->xmlrpcString)),
+										'docstring' => 'Returns a documentation string for the specified method'),
+					'system.methodSignature' => array(
+										'function' => 'this.methodSignature',
+										'signature' => array(array($this->xmlrpcArray, $this->xmlrpcString)),
+										'docstring' => 'Returns an array describing the return type and required parameters of a method'),
+					'system.multicall'	 => array(
+										'function' => 'this.multicall',
+										'signature' => array(array($this->xmlrpcArray, $this->xmlrpcArray)),
+										'docstring' => 'Combine multiple RPC calls in one request. See http://www.xmlrpc.com/discuss/msgReader$1208 for details')
+				);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Main Server Function
+	 *
+	 * @return	void
+	 */
+	public function serve()
+	{
+		$r = $this->parseRequest();
+		$payload = '<?xml version="1.0" encoding="'.$this->xmlrpc_defencoding.'"?'.'>'."\n".$this->debug_msg.$r->prepare_response();
+
+		header('Content-Type: text/xml');
+		header('Content-Length: '.strlen($payload));
+		exit($payload);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Method to Class
+	 *
+	 * @param	string	method name
+	 * @param	string	function
+	 * @param	string	signature
+	 * @param	string	docstring
+	 * @return	void
+	 */
+	public function add_to_map($methodname, $function, $sig, $doc)
+	{
+		$this->methods[$methodname] = array(
+			'function'	=> $function,
+			'signature'	=> $sig,
+			'docstring'	=> $doc
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Parse Server Request
+	 *
+	 * @param	string	data
+	 * @return	object	xmlrpc response
+	 */
+	public function parseRequest($data = '')
+	{
+		//-------------------------------------
+		//  Get Data
+		//-------------------------------------
+
+		if ($data === '')
+		{
+			$CI =& get_instance();
+			if ($CI->input->method() === 'post')
+			{
+				$data = $CI->input->raw_input_stream;
+			}
+		}
+
+		//-------------------------------------
+		//  Set up XML Parser
+		//-------------------------------------
+
+		$parser = xml_parser_create($this->xmlrpc_defencoding);
+		$parser_object = new XML_RPC_Message('filler');
+		$pname = (string) $parser;
+
+		$parser_object->xh[$pname] = array(
+			'isf' => 0,
+			'isf_reason' => '',
+			'params' => array(),
+			'stack' => array(),
+			'valuestack' => array(),
+			'method' => ''
+		);
+
+		xml_set_object($parser, $parser_object);
+		xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, TRUE);
+		xml_set_element_handler($parser, 'open_tag', 'closing_tag');
+		xml_set_character_data_handler($parser, 'character_data');
+		//xml_set_default_handler($parser, 'default_handler');
+
+		//-------------------------------------
+		// PARSE + PROCESS XML DATA
+		//-------------------------------------
+
+		if ( ! xml_parse($parser, $data, 1))
+		{
+			// Return XML error as a faultCode
+			$r = new XML_RPC_Response(0,
+				$this->xmlrpcerrxml + xml_get_error_code($parser),
+				sprintf('XML error: %s at line %d',
+				xml_error_string(xml_get_error_code($parser)),
+				xml_get_current_line_number($parser)));
+			xml_parser_free($parser);
+		}
+		elseif ($parser_object->xh[$pname]['isf'])
+		{
+			return new XML_RPC_Response(0, $this->xmlrpcerr['invalid_return'], $this->xmlrpcstr['invalid_return']);
+		}
+		else
+		{
+			xml_parser_free($parser);
+
+			$m = new XML_RPC_Message($parser_object->xh[$pname]['method']);
+			$plist = '';
+
+			for ($i = 0, $c = count($parser_object->xh[$pname]['params']); $i < $c; $i++)
+			{
+				if ($this->debug === TRUE)
+				{
+					$plist .= $i.' - '.print_r(get_object_vars($parser_object->xh[$pname]['params'][$i]), TRUE).";\n";
+				}
+
+				$m->addParam($parser_object->xh[$pname]['params'][$i]);
+			}
+
+			if ($this->debug === TRUE)
+			{
+				echo "<pre>---PLIST---\n".$plist."\n---PLIST END---\n\n</pre>";
+			}
+
+			$r = $this->_execute($m);
+		}
+
+		//-------------------------------------
+		// SET DEBUGGING MESSAGE
+		//-------------------------------------
+
+		if ($this->debug === TRUE)
+		{
+			$this->debug_msg = "<!-- DEBUG INFO:\n\n".$plist."\n END DEBUG-->\n";
+		}
+
+		return $r;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Executes the Method
+	 *
+	 * @param	object
+	 * @return	mixed
+	 */
+	protected function _execute($m)
+	{
+		$methName = $m->method_name;
+
+		// Check to see if it is a system call
+		$system_call = (strpos($methName, 'system') === 0);
+
+		if ($this->xss_clean === FALSE)
+		{
+			$m->xss_clean = FALSE;
+		}
+
+		//-------------------------------------
+		// Valid Method
+		//-------------------------------------
+
+		if ( ! isset($this->methods[$methName]['function']))
+		{
+			return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
+		}
+
+		//-------------------------------------
+		// Check for Method (and Object)
+		//-------------------------------------
+
+		$method_parts = explode('.', $this->methods[$methName]['function']);
+		$objectCall   = ! empty($method_parts[1]);
+
+		if ($system_call === TRUE)
+		{
+			if ( ! is_callable(array($this, $method_parts[1])))
+			{
+				return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
+			}
+		}
+		elseif (($objectCall && ( ! method_exists($method_parts[0], $method_parts[1]) OR ! (new ReflectionMethod($method_parts[0], $method_parts[1]))->isPublic()))
+			OR ( ! $objectCall && ! is_callable($this->methods[$methName]['function']))
+		)
+		{
+			return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
+		}
+
+		//-------------------------------------
+		// Checking Methods Signature
+		//-------------------------------------
+
+		if (isset($this->methods[$methName]['signature']))
+		{
+			$sig = $this->methods[$methName]['signature'];
+			for ($i = 0, $c = count($sig); $i < $c; $i++)
+			{
+				$current_sig = $sig[$i];
+
+				if (count($current_sig) === count($m->params)+1)
+				{
+					for ($n = 0, $mc = count($m->params); $n < $mc; $n++)
+					{
+						$p = $m->params[$n];
+						$pt = ($p->kindOf() === 'scalar') ? $p->scalarval() : $p->kindOf();
+
+						if ($pt !== $current_sig[$n+1])
+						{
+							$pno = $n+1;
+							$wanted = $current_sig[$n+1];
+
+							return new XML_RPC_Response(0,
+								$this->xmlrpcerr['incorrect_params'],
+								$this->xmlrpcstr['incorrect_params'] .
+								': Wanted '.$wanted.', got '.$pt.' at param '.$pno.')');
+						}
+					}
+				}
+			}
+		}
+
+		//-------------------------------------
+		// Calls the Function
+		//-------------------------------------
+
+		if ($objectCall === TRUE)
+		{
+			if ($method_parts[0] === 'this' && $system_call === TRUE)
+			{
+				return call_user_func(array($this, $method_parts[1]), $m);
+			}
+			elseif ($this->object === FALSE)
+			{
+				return get_instance()->{$method_parts[1]}($m);
+			}
+
+			return $this->object->{$method_parts[1]}($m);
+		}
+
+		return call_user_func($this->methods[$methName]['function'], $m);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Server Function: List Methods
+	 *
+	 * @param	mixed
+	 * @return	object
+	 */
+	public function listMethods($m)
+	{
+		$v = new XML_RPC_Values();
+		$output = array();
+
+		foreach ($this->methods as $key => $value)
+		{
+			$output[] = new XML_RPC_Values($key, 'string');
+		}
+
+		foreach ($this->system_methods as $key => $value)
+		{
+			$output[] = new XML_RPC_Values($key, 'string');
+		}
+
+		$v->addArray($output);
+		return new XML_RPC_Response($v);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Server Function: Return Signature for Method
+	 *
+	 * @param	mixed
+	 * @return	object
+	 */
+	public function methodSignature($m)
+	{
+		$parameters = $m->output_parameters();
+		$method_name = $parameters[0];
+
+		if (isset($this->methods[$method_name]))
+		{
+			if ($this->methods[$method_name]['signature'])
+			{
+				$sigs = array();
+				$signature = $this->methods[$method_name]['signature'];
+
+				for ($i = 0, $c = count($signature); $i < $c; $i++)
+				{
+					$cursig = array();
+					$inSig = $signature[$i];
+					for ($j = 0, $jc = count($inSig); $j < $jc; $j++)
+					{
+						$cursig[]= new XML_RPC_Values($inSig[$j], 'string');
+					}
+					$sigs[] = new XML_RPC_Values($cursig, 'array');
+				}
+
+				return new XML_RPC_Response(new XML_RPC_Values($sigs, 'array'));
+			}
+
+			return new XML_RPC_Response(new XML_RPC_Values('undef', 'string'));
+		}
+
+		return new XML_RPC_Response(0, $this->xmlrpcerr['introspect_unknown'], $this->xmlrpcstr['introspect_unknown']);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Server Function: Doc String for Method
+	 *
+	 * @param	mixed
+	 * @return	object
+	 */
+	public function methodHelp($m)
+	{
+		$parameters = $m->output_parameters();
+		$method_name = $parameters[0];
+
+		if (isset($this->methods[$method_name]))
+		{
+			$docstring = isset($this->methods[$method_name]['docstring']) ? $this->methods[$method_name]['docstring'] : '';
+
+			return new XML_RPC_Response(new XML_RPC_Values($docstring, 'string'));
+		}
+
+		return new XML_RPC_Response(0, $this->xmlrpcerr['introspect_unknown'], $this->xmlrpcstr['introspect_unknown']);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Server Function: Multi-call
+	 *
+	 * @param	mixed
+	 * @return	object
+	 */
+	public function multicall($m)
+	{
+		// Disabled
+		return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
+
+		$parameters = $m->output_parameters();
+		$calls = $parameters[0];
+
+		$result = array();
+
+		foreach ($calls as $value)
+		{
+			$m = new XML_RPC_Message($value[0]);
+			$plist = '';
+
+			for ($i = 0, $c = count($value[1]); $i < $c; $i++)
+			{
+				$m->addParam(new XML_RPC_Values($value[1][$i], 'string'));
+			}
+
+			$attempt = $this->_execute($m);
+
+			if ($attempt->faultCode() !== 0)
+			{
+				return $attempt;
+			}
+
+			$result[] = new XML_RPC_Values(array($attempt->value()), 'array');
+		}
+
+		return new XML_RPC_Response(new XML_RPC_Values($result, 'array'));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Multi-call Function: Error Handling
+	 *
+	 * @param	mixed
+	 * @return	object
+	 */
+	public function multicall_error($err)
+	{
+		$str = is_string($err) ? $this->xmlrpcstr["multicall_${err}"] : $err->faultString();
+		$code = is_string($err) ? $this->xmlrpcerr["multicall_${err}"] : $err->faultCode();
+
+		$struct['faultCode'] = new XML_RPC_Values($code, 'int');
+		$struct['faultString'] = new XML_RPC_Values($str, 'string');
+
+		return new XML_RPC_Values($struct, 'struct');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Multi-call Function: Processes method
+	 *
+	 * @param	mixed
+	 * @return	object
+	 */
+	public function do_multicall($call)
+	{
+		if ($call->kindOf() !== 'struct')
+		{
+			return $this->multicall_error('notstruct');
+		}
+		elseif ( ! $methName = $call->me['struct']['methodName'])
+		{
+			return $this->multicall_error('nomethod');
+		}
+
+		list($scalar_value, $scalar_type) = array(reset($methName->me), key($methName->me));
+		$scalar_type = $scalar_type === $this->xmlrpcI4 ? $this->xmlrpcInt : $scalar_type;
+
+		if ($methName->kindOf() !== 'scalar' OR $scalar_type !== 'string')
+		{
+			return $this->multicall_error('notstring');
+		}
+		elseif ($scalar_value === 'system.multicall')
+		{
+			return $this->multicall_error('recursion');
+		}
+		elseif ( ! $params = $call->me['struct']['params'])
+		{
+			return $this->multicall_error('noparams');
+		}
+		elseif ($params->kindOf() !== 'array')
+		{
+			return $this->multicall_error('notarray');
+		}
+
+		list($b, $a) = array(reset($params->me), key($params->me));
+
+		$msg = new XML_RPC_Message($scalar_value);
+		for ($i = 0, $numParams = count($b); $i < $numParams; $i++)
+		{
+			$msg->params[] = $params->me['array'][$i];
+		}
+
+		$result = $this->_execute($msg);
+
+		if ($result->faultCode() !== 0)
+		{
+			return $this->multicall_error($result);
+		}
+
+		return new XML_RPC_Values(array($result->value()), 'array');
+	}
+
+}
diff --git a/system/libraries/Zip.php b/system/libraries/Zip.php
new file mode 100644
index 00000000..b54d695d
--- /dev/null
+++ b/system/libraries/Zip.php
@@ -0,0 +1,530 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/**
+ * Zip Compression Class
+ *
+ * This class is based on a library I found at Zend:
+ * https://www.zend.com/codex.php?id=696&single=1
+ *
+ * The original library is a little rough around the edges so I
+ * refactored it and added several additional methods -- Rick Ellis
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Encryption
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/userguide3/libraries/zip.html
+ */
+class CI_Zip {
+
+	/**
+	 * Zip data in string form
+	 *
+	 * @var string
+	 */
+	public $zipdata = '';
+
+	/**
+	 * Zip data for a directory in string form
+	 *
+	 * @var string
+	 */
+	public $directory = '';
+
+	/**
+	 * Number of files/folder in zip file
+	 *
+	 * @var int
+	 */
+	public $entries = 0;
+
+	/**
+	 * Number of files in zip
+	 *
+	 * @var int
+	 */
+	public $file_num = 0;
+
+	/**
+	 * relative offset of local header
+	 *
+	 * @var int
+	 */
+	public $offset = 0;
+
+	/**
+	 * Reference to time at init
+	 *
+	 * @var int
+	 */
+	public $now;
+
+	/**
+	 * The level of compression
+	 *
+	 * Ranges from 0 to 9, with 9 being the highest level.
+	 *
+	 * @var	int
+	 */
+	public $compression_level = 2;
+
+	/**
+	 * mbstring.func_overload flag
+	 *
+	 * @var	bool
+	 */
+	protected static $func_overload;
+
+	/**
+	 * Initialize zip compression class
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
+
+		$this->now = time();
+		log_message('info', 'Zip Compression Class Initialized');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Directory
+	 *
+	 * Lets you add a virtual directory into which you can place files.
+	 *
+	 * @param	mixed	$directory	the directory name. Can be string or array
+	 * @return	void
+	 */
+	public function add_dir($directory)
+	{
+		foreach ((array) $directory as $dir)
+		{
+			if ( ! preg_match('|.+/$|', $dir))
+			{
+				$dir .= '/';
+			}
+
+			$dir_time = $this->_get_mod_time($dir);
+			$this->_add_dir($dir, $dir_time['file_mtime'], $dir_time['file_mdate']);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get file/directory modification time
+	 *
+	 * If this is a newly created file/dir, we will set the time to 'now'
+	 *
+	 * @param	string	$dir	path to file
+	 * @return	array	filemtime/filemdate
+	 */
+	protected function _get_mod_time($dir)
+	{
+		// filemtime() may return false, but raises an error for non-existing files
+		$date = file_exists($dir) ? getdate(filemtime($dir)) : getdate($this->now);
+
+		return array(
+			'file_mtime' => ($date['hours'] << 11) + ($date['minutes'] << 5) + $date['seconds'] / 2,
+			'file_mdate' => (($date['year'] - 1980) << 9) + ($date['mon'] << 5) + $date['mday']
+		);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Directory
+	 *
+	 * @param	string	$dir	the directory name
+	 * @param	int	$file_mtime
+	 * @param	int	$file_mdate
+	 * @return	void
+	 */
+	protected function _add_dir($dir, $file_mtime, $file_mdate)
+	{
+		$dir = str_replace('\\', '/', $dir);
+
+		$this->zipdata .=
+			"\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00"
+			.pack('v', $file_mtime)
+			.pack('v', $file_mdate)
+			.pack('V', 0) // crc32
+			.pack('V', 0) // compressed filesize
+			.pack('V', 0) // uncompressed filesize
+			.pack('v', self::strlen($dir)) // length of pathname
+			.pack('v', 0) // extra field length
+			.$dir
+			// below is "data descriptor" segment
+			.pack('V', 0) // crc32
+			.pack('V', 0) // compressed filesize
+			.pack('V', 0); // uncompressed filesize
+
+		$this->directory .=
+			"\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00"
+			.pack('v', $file_mtime)
+			.pack('v', $file_mdate)
+			.pack('V',0) // crc32
+			.pack('V',0) // compressed filesize
+			.pack('V',0) // uncompressed filesize
+			.pack('v', self::strlen($dir)) // length of pathname
+			.pack('v', 0) // extra field length
+			.pack('v', 0) // file comment length
+			.pack('v', 0) // disk number start
+			.pack('v', 0) // internal file attributes
+			.pack('V', 16) // external file attributes - 'directory' bit set
+			.pack('V', $this->offset) // relative offset of local header
+			.$dir;
+
+		$this->offset = self::strlen($this->zipdata);
+		$this->entries++;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Data to Zip
+	 *
+	 * Lets you add files to the archive. If the path is included
+	 * in the filename it will be placed within a directory. Make
+	 * sure you use add_dir() first to create the folder.
+	 *
+	 * @param	mixed	$filepath	A single filepath or an array of file => data pairs
+	 * @param	string	$data		Single file contents
+	 * @return	void
+	 */
+	public function add_data($filepath, $data = NULL)
+	{
+		if (is_array($filepath))
+		{
+			foreach ($filepath as $path => $data)
+			{
+				$file_data = $this->_get_mod_time($path);
+				$this->_add_data($path, $data, $file_data['file_mtime'], $file_data['file_mdate']);
+			}
+		}
+		else
+		{
+			$file_data = $this->_get_mod_time($filepath);
+			$this->_add_data($filepath, $data, $file_data['file_mtime'], $file_data['file_mdate']);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Add Data to Zip
+	 *
+	 * @param	string	$filepath	the file name/path
+	 * @param	string	$data	the data to be encoded
+	 * @param	int	$file_mtime
+	 * @param	int	$file_mdate
+	 * @return	void
+	 */
+	protected function _add_data($filepath, $data, $file_mtime, $file_mdate)
+	{
+		$filepath = str_replace('\\', '/', $filepath);
+
+		$uncompressed_size = self::strlen($data);
+		$crc32  = crc32($data);
+		$gzdata = self::substr(gzcompress($data, $this->compression_level), 2, -4);
+		$compressed_size = self::strlen($gzdata);
+
+		$this->zipdata .=
+			"\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00"
+			.pack('v', $file_mtime)
+			.pack('v', $file_mdate)
+			.pack('V', $crc32)
+			.pack('V', $compressed_size)
+			.pack('V', $uncompressed_size)
+			.pack('v', self::strlen($filepath)) // length of filename
+			.pack('v', 0) // extra field length
+			.$filepath
+			.$gzdata; // "file data" segment
+
+		$this->directory .=
+			"\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00"
+			.pack('v', $file_mtime)
+			.pack('v', $file_mdate)
+			.pack('V', $crc32)
+			.pack('V', $compressed_size)
+			.pack('V', $uncompressed_size)
+			.pack('v', self::strlen($filepath)) // length of filename
+			.pack('v', 0) // extra field length
+			.pack('v', 0) // file comment length
+			.pack('v', 0) // disk number start
+			.pack('v', 0) // internal file attributes
+			.pack('V', 32) // external file attributes - 'archive' bit set
+			.pack('V', $this->offset) // relative offset of local header
+			.$filepath;
+
+		$this->offset = self::strlen($this->zipdata);
+		$this->entries++;
+		$this->file_num++;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Read the contents of a file and add it to the zip
+	 *
+	 * @param	string	$path
+	 * @param	bool	$archive_filepath
+	 * @return	bool
+	 */
+	public function read_file($path, $archive_filepath = FALSE)
+	{
+		if (file_exists($path) && FALSE !== ($data = file_get_contents($path)))
+		{
+			if (is_string($archive_filepath))
+			{
+				$name = str_replace('\\', '/', $archive_filepath);
+			}
+			else
+			{
+				$name = str_replace('\\', '/', $path);
+
+				if ($archive_filepath === FALSE)
+				{
+					$name = preg_replace('|.*/(.+)|', '\\1', $name);
+				}
+			}
+
+			$this->add_data($name, $data);
+			return TRUE;
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Read a directory and add it to the zip.
+	 *
+	 * This function recursively reads a folder and everything it contains (including
+	 * sub-folders) and creates a zip based on it. Whatever directory structure
+	 * is in the original file path will be recreated in the zip file.
+	 *
+	 * @param	string	$path	path to source directory
+	 * @param	bool	$preserve_filepath
+	 * @param	string	$root_path
+	 * @return	bool
+	 */
+	public function read_dir($path, $preserve_filepath = TRUE, $root_path = NULL)
+	{
+		$path = rtrim($path, '/\\').DIRECTORY_SEPARATOR;
+		if ( ! $fp = @opendir($path))
+		{
+			return FALSE;
+		}
+
+		// Set the original directory root for child dir's to use as relative
+		if ($root_path === NULL)
+		{
+			$root_path = str_replace(array('\\', '/'), DIRECTORY_SEPARATOR, dirname($path)).DIRECTORY_SEPARATOR;
+		}
+
+		while (FALSE !== ($file = readdir($fp)))
+		{
+			if ($file === '.' OR $file === '..')
+			{
+				continue;
+			}
+
+			if (is_dir($path.$file))
+			{
+				$this->read_dir($path.$file.DIRECTORY_SEPARATOR, $preserve_filepath, $root_path);
+			}
+			elseif (FALSE !== ($data = file_get_contents($path.$file)))
+			{
+				$name = str_replace(array('\\', '/'), DIRECTORY_SEPARATOR, $path);
+				if ($preserve_filepath === FALSE)
+				{
+					$name = str_replace($root_path, '', $name);
+				}
+
+				$this->add_data($name.$file, $data);
+			}
+		}
+
+		closedir($fp);
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get the Zip file
+	 *
+	 * @return	string	(binary encoded)
+	 */
+	public function get_zip()
+	{
+		// Is there any data to return?
+		if ($this->entries === 0)
+		{
+			return FALSE;
+		}
+
+		// @see https://github.com/bcit-ci/CodeIgniter/issues/5864
+		$footer = $this->directory."\x50\x4b\x05\x06\x00\x00\x00\x00"
+			.pack('v', $this->entries) // total # of entries "on this disk"
+			.pack('v', $this->entries) // total # of entries overall
+			.pack('V', self::strlen($this->directory)) // size of central dir
+			.pack('V', self::strlen($this->zipdata)) // offset to start of central dir
+			."\x00\x00"; // .zip file comment length
+		return $this->zipdata.$footer;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Write File to the specified directory
+	 *
+	 * Lets you write a file
+	 *
+	 * @param	string	$filepath	the file name
+	 * @return	bool
+	 */
+	public function archive($filepath)
+	{
+		if ( ! ($fp = @fopen($filepath, 'w+b')))
+		{
+			return FALSE;
+		}
+
+		flock($fp, LOCK_EX);
+
+		for ($result = $written = 0, $data = $this->get_zip(), $length = self::strlen($data); $written < $length; $written += $result)
+		{
+			if (($result = fwrite($fp, self::substr($data, $written))) === FALSE)
+			{
+				break;
+			}
+		}
+
+		flock($fp, LOCK_UN);
+		fclose($fp);
+
+		return is_int($result);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Download
+	 *
+	 * @param	string	$filename	the file name
+	 * @return	void
+	 */
+	public function download($filename = 'backup.zip')
+	{
+		if ( ! preg_match('|.+?\.zip$|', $filename))
+		{
+			$filename .= '.zip';
+		}
+
+		get_instance()->load->helper('download');
+		$get_zip = $this->get_zip();
+		$zip_content =& $get_zip;
+
+		force_download($filename, $zip_content);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Initialize Data
+	 *
+	 * Lets you clear current zip data. Useful if you need to create
+	 * multiple zips with different data.
+	 *
+	 * @return	CI_Zip
+	 */
+	public function clear_data()
+	{
+		$this->zipdata = '';
+		$this->directory = '';
+		$this->entries = 0;
+		$this->file_num = 0;
+		$this->offset = 0;
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe strlen()
+	 *
+	 * @param	string	$str
+	 * @return	int
+	 */
+	protected static function strlen($str)
+	{
+		return (self::$func_overload)
+			? mb_strlen($str, '8bit')
+			: strlen($str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Byte-safe substr()
+	 *
+	 * @param	string	$str
+	 * @param	int	$start
+	 * @param	int	$length
+	 * @return	string
+	 */
+	protected static function substr($str, $start, $length = NULL)
+	{
+		if (self::$func_overload)
+		{
+			return mb_substr($str, $start, $length, '8bit');
+		}
+
+		return isset($length)
+			? substr($str, $start, $length)
+			: substr($str, $start);
+	}
+}
diff --git a/system/libraries/index.html b/system/libraries/index.html
new file mode 100644
index 00000000..bcb7cae3
--- /dev/null
+++ b/system/libraries/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>

From 67e6f952b619da9ce0c49099d2060dcd8299f5dc Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:24:44 +0200
Subject: [PATCH 57/72] Added the system directory to the gulp build.

---
 gulpfile.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gulpfile.js b/gulpfile.js
index 37495bb3..cdd22418 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -36,6 +36,7 @@ gulp.task('package', (done) => {
     fs.copySync('application', 'build/application');
     fs.copySync('assets', 'build/assets');
     fs.copySync('engine', 'build/engine');
+    fs.copySync('system', 'build/system');
 
     fs.ensureDirSync('build/storage/backups');
     fs.copySync('storage/backups/.htaccess', 'build/storage/backups/.htaccess');

From 7526cff3bfdad132018cc31f1368edd18e9d50a6 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:25:44 +0200
Subject: [PATCH 58/72] Czech translation corrections

---
 .../language/czech/translations_lang.php      | 56 +++++++++----------
 1 file changed, 28 insertions(+), 28 deletions(-)

diff --git a/application/language/czech/translations_lang.php b/application/language/czech/translations_lang.php
index 820d8dbc..e8301899 100644
--- a/application/language/czech/translations_lang.php
+++ b/application/language/czech/translations_lang.php
@@ -1,7 +1,7 @@
 <?php defined('BASEPATH') or exit('No direct script access allowed');
 // Czech
 $lang['page_title'] = 'Rezervace schůzky s';
-$lang['service_and_provider'] = 'Výběr služby & poskytovatele';
+$lang['service_and_provider'] = 'Výběr služby a poskytovatele';
 $lang['select_service'] = 'Vyberte službu';
 $lang['select_provider'] = 'Vyberte poskytovatele';
 $lang['duration'] = 'Trvání';
@@ -16,11 +16,13 @@ $lang['first_name'] = 'Jméno';
 $lang['last_name'] = 'Příjmení';
 $lang['email'] = 'Email';
 $lang['phone_number'] = 'Telefonní číslo';
-$lang['phone'] = 'Phone';
+$lang['phone'] = 'Telefon';
 $lang['address'] = 'Adresa';
 $lang['city'] = 'Obec';
 $lang['zip_code'] = 'PSČ';
 $lang['notes'] = 'Poznámky';
+$lang['language'] = 'Jazyk';
+$lang['no_language'] = 'Žádný jazyk';
 $lang['fields_are_required'] = 'Pole označená * jsou povinná.';
 $lang['appointment_confirmation'] = 'Rezervace schůzky';
 $lang['confirm'] = 'Potvrdit';
@@ -36,7 +38,7 @@ $lang['appointment_removed_from_schedule'] = 'Následující schůzka byla odstr
 $lang['appointment_details_was_sent_to_you'] = 'Byl vám odeslán email s informacemi o schůzce.';
 $lang['add_to_google_calendar'] = 'Přidat do Kalendáře Google';
 $lang['appointment_booked'] = 'Vaše schůzka byla úspěšně rezervována.';
-$lang['thank_you_for_appointment'] = 'Děkujeme za vaši rezervaci schůzky s naší společností. Níže jsou zobrazeny informace o schůzce. Změny můžete provést kliknutím na odkaz na schůzku.';
+$lang['thank_you_for_appointment'] = 'Děkujeme za vaši rezervaci schůzky u nás. Níže jsou zobrazeny informace o schůzce. Změny můžete provést kliknutím na odkaz na schůzku.';
 $lang['appointment_details_title'] = 'Informace o schůzce';
 $lang['customer_details_title'] = 'Informace o zákazníkovi';
 $lang['service'] = 'Služba';
@@ -45,12 +47,10 @@ $lang['customer'] = 'Zákazník';
 $lang['start'] = 'Začátek';
 $lang['end'] = 'Konec';
 $lang['name'] = 'Název';
-$lang['phone'] = 'Telefon';
-$lang['address'] = 'Adresa';
 $lang['appointment_link_title'] = 'Odkaz na schůzku';
 $lang['success'] = 'Úspěch.';
 $lang['appointment_added_to_google_calendar'] = 'Vaše schůzka byla přidána do vašeho účtu v Kalendáři Google.';
-$lang['view_appointment_in_google_calendar'] = 'Pro zobrazení vaši schůzky v Kalendáři Google klikněte sem.';
+$lang['view_appointment_in_google_calendar'] = 'Pro zobrazení vaší schůzky v Kalendáři Google klikněte sem.';
 $lang['appointment_added_to_your_plan'] = 'Do vašeho rozvrhu byla přidána nová schůzka.';
 $lang['appointment_link_description'] = 'Editaci můžete provést kliknutím na níže uvedený odkaz na schůzku.';
 $lang['appointment_locked'] = 'Nelze upravit.';
@@ -65,7 +65,7 @@ $lang['log_out'] = 'Odhlášení';
 $lang['synchronize'] = 'Synchronizace';
 $lang['enable_sync'] = 'Povolit synchronizaci';
 $lang['disable_sync'] = 'Zakázat synchronizaci';
-$lang['disable_sync_prompt'] = 'Opravdu chcete vypnout synchronizaci s kalendářem ?';
+$lang['disable_sync_prompt'] = 'Opravdu chcete vypnout synchronizaci s kalendářem?';
 $lang['reload'] = 'Obnovit';
 $lang['appointment'] = 'Schůzka';
 $lang['unavailable'] = 'Nedostupnost';
@@ -92,7 +92,7 @@ $lang['reload_appointments_hint'] = 'Obnovit zobrazení schůzek v kalendáři.'
 $lang['trigger_google_sync_hint'] = 'Zahájit proces synchronizace s Kalendářem Google.';
 $lang['appointment_updated'] = 'Provedené změny schůzky byly úspěšně uloženy.';
 $lang['undo'] = 'Zpět';
-$lang['appointment_details_changed'] = 'Informace schůzky byly změněny.';
+$lang['appointment_details_changed'] = 'Informace o schůzce byly změněny.';
 $lang['appointment_changes_saved'] = 'Provedené změny schůzky byly úspěšně uloženy.';
 $lang['save'] = 'Uložit';
 $lang['new'] = 'Nový';
@@ -109,14 +109,14 @@ $lang['appointment_saved'] = 'Schůzka úspěšně uložena.';
 $lang['new_unavailable_title'] = 'Nové období nedostupnosti';
 $lang['edit_unavailable_title'] = 'Editovat období nedostupnosti';
 $lang['unavailable_saved'] = 'Období nedostupnosti úspěšně uloženo.';
-$lang['start_date_before_end_error'] = 'Datum zahájení je vyšší než datum ukončení.';
+$lang['start_date_before_end_error'] = 'Datum zahájení je pozdější než datum ukončení.';
 $lang['invalid_email'] = 'Neplatná emailová adresa.';
 $lang['invalid_duration'] = 'Neplatné trvání.';
 $lang['customers'] = 'Zákazníci';
 $lang['details'] = 'Základní údaje';
 $lang['no_records_found'] = 'Nebyly nalezeny žádné záznamy...';
 $lang['services'] = 'Služby';
-$lang['duration_minutes'] = 'Doba trvání (Minuty)';
+$lang['duration_minutes'] = 'Doba trvání (minuty)';
 $lang['currency'] = 'Měna';
 $lang['category'] = 'Kategorie';
 $lang['no_category'] = 'Žádná kategorie';
@@ -126,13 +126,13 @@ $lang['admins'] = 'Administrátoři';
 $lang['providers'] = 'Poskytovatelé';
 $lang['secretaries'] = 'Sekretářky';
 $lang['mobile_number'] = 'Mobilní telefon';
-$lang['mobile'] = 'Mobile';
+$lang['mobile'] = 'Mobil';
 $lang['state'] = 'Stát';
 $lang['username'] = 'Uživatelské jméno';
 $lang['password'] = 'Heslo';
 $lang['retype_password'] = 'Potvrzení hesla';
 $lang['receive_notifications'] = 'Odesílat notifikace';
-$lang['passwords_mismatch'] = 'Heslo a potvrzení hesla se neshodují.';
+$lang['passwords_mismatch'] = 'Hesla se neshodují.';
 $lang['admin_saved'] = 'Administrátor úspěšně uložen.';
 $lang['provider_saved'] = 'Poskytovatel úspěšně uložen.';
 $lang['secretary_saved'] = 'Sekretářka úspěšně uložena.';
@@ -160,7 +160,7 @@ $lang['add_breaks_during_each_day'] = 'Definice pracovních přestávek během k
 $lang['day'] = 'Den';
 $lang['days'] = 'Dny';
 $lang['actions'] = 'Akce';
-$lang['reset_working_plan_hint'] = 'Resetovat pracovní plán zpět na defaultní hodnoty.';
+$lang['reset_working_plan_hint'] = 'Resetovat pracovní plán zpět na výchozí hodnoty.';
 $lang['company_name'] = 'Název společnosti';
 $lang['company_name_hint'] = 'Název společnosti, který bude zobrazen všude v systému (povinné).';
 $lang['company_email'] = 'Email společnosti';
@@ -173,15 +173,15 @@ $lang['general'] = 'Obecné';
 $lang['business_logic'] = 'Business logika';
 $lang['current_user'] = 'Přihlášený uživatel';
 $lang['about_app'] = 'O aplikaci Easy!Appointments';
-$lang['edit_working_plan_hint'] = 'Zde označte dny a hodiny kdy bude vaše společnost přijímat rezervace schůzek. Budete mít možnost přizpůsobit schůzky mimo pracovní dobu, ale pro zákazníky tato možnost k dispozici nebude. Tato pracovní doba bude dafultní pro každého nově založeného poskytovatele, přičemž ji bude možné změnit u každého jednotlivého poskytovatele v rámci editace. Poté můžete přidat období přestávek.';
-$lang['edit_breaks_hint'] = 'Zadejte přestávky v rámci každého dne. Definované Přestávky budou použity pro všechny nově založené poskytovatele.';
+$lang['edit_working_plan_hint'] = 'Zde označte dny a hodiny, kdy bude vaše společnost přijímat rezervace schůzek. Budete mít možnost přizpůsobit schůzky mimo pracovní dobu, zákazníci se ale mimo pracovní dobu objednat nemohou. Tato pracovní doba bude výchozí pro každého nově založeného poskytovatele, přičemž ji bude možné změnit u každého jednotlivého poskytovatele v rámci editace. Poté můžete přidat období přestávek.';
+$lang['edit_breaks_hint'] = 'Zadejte přestávky v rámci každého dne. Definované přestávky budou použity pro všechny nově založené poskytovatele.';
 $lang['book_advance_timeout'] = 'Časový limit rezervace';
 $lang['book_advance_timeout_hint'] = 'Definujte časový limit (v minutách), před jehož uplynutím budou moci zákazníci zadat nebo změnit rezervaci schůzky se společností.';
-$lang['timeout_minutes'] = 'Časový limit (Minuty)';
+$lang['timeout_minutes'] = 'Časový limit (minuty)';
 $lang['about_app_info'] = 'Easy!Appointments je vysoce přizpůsobitelná webová aplikace, která vašim zákazníkům umožňuje rezervovat si s vámi schůzky prostřednictvím webu. Navíc poskytuje možnost synchronizovat vaše data s Kalendářem Google, takže je můžete využívat v rámci dalších služeb.';
 $lang['current_version'] = 'Aktuální verze';
 $lang['support'] = 'Podpora';
-$lang['about_app_support'] = 'Pokud při používání Easy!Appointments narazíte na jakékoli problémy můžete odpovědi hledat v oficiální skupině Google. Také můžete založit nový incident na stránce Google Code za účelem podpory dalšího vývoje.';
+$lang['about_app_support'] = 'Pokud při používání Easy!Appointments narazíte na jakékoli problémy, můžete odpovědi hledat v oficiální skupině Google. Také můžete založit nový incident na stránce Google Code za účelem podpory dalšího vývoje.';
 $lang['official_website'] = 'Oficiální stránky';
 $lang['google_plus_community'] = 'Komunita Google+';
 $lang['support_group'] = 'Skupina podpory';
@@ -203,7 +203,7 @@ $lang['regenerate_password'] = 'Znovu vygenerovat heslo';
 $lang['go_to_login'] = 'Zpět na přihlášení';
 $lang['new_password_sent_with_email'] = 'Vaše nové heslo vám bylo zasláno prostřednictvím emailu.';
 $lang['new_account_password'] = 'Nové heslo';
-$lang['new_password_is'] = 'Vaše nové heslo je $password. Prosím, uschovejte tento email pro případ, že byste potřebovali znovu zjistit vaše heslo. Heslo si také můžete změnit v rámci nastavení.';
+$lang['new_password_is'] = 'Vaše nové heslo je $password. Uschovejte prosím tento email pro případ, že byste potřebovali znovu zjistit vaše heslo. Heslo si také můžete změnit v rámci nastavení.';
 $lang['delete_record_prompt'] = 'Opravdu si přejete odstranit tento záznam? Tuto akci nelze vrátit zpět.';
 $lang['delete_admin'] = 'Odstranit administrátora';
 $lang['delete_customer'] = 'Odstranit zákazníka';
@@ -241,7 +241,7 @@ $lang['password_length_notice'] = 'Heslo musí být minimálně $number znaků d
 $lang['general_settings'] = 'Obecná nastavení';
 $lang['personal_information'] = 'Osobní údaje';
 $lang['system_login'] = 'Přihlášení do systému';
-$lang['user_settings_are_invalid'] = 'Uživatelská nastavení nejsou platná! Prosím, zkontrolujte vaše nastavení, a poté akci opakujte.';
+$lang['user_settings_are_invalid'] = 'Uživatelská nastavení nejsou platná! Zkontrolujte prosím vaše nastavení a poté akci opakujte.';
 $lang['add_break'] = 'Přidat přestávku';
 $lang['january'] = 'Leden';
 $lang['february'] = 'Únor';
@@ -264,8 +264,8 @@ $lang['hour'] = 'Hodina';
 $lang['minute'] = 'Minuta';
 $lang['google_sync_completed'] = 'Synchronizace s Google byla úspěšně dokončena.';
 $lang['google_sync_failed'] = 'Synchronizace s Google selhala: nepodařilo se navázat spojení se serverem.';
-$lang['select_google_calendar'] = 'Vyberte Kalednář Google';
-$lang['select_google_calendar_prompt'] = 'Výberte kalendář, do kterého chcete synchronizovat vaše schůzky. Jestliže nechcete vybrat konkrétní kalendář, bude použit defaultní.';
+$lang['select_google_calendar'] = 'Vyberte Kalendář Google';
+$lang['select_google_calendar_prompt'] = 'Výberte kalendář, do kterého chcete synchronizovat vaše schůzky. Jestliže nechcete vybrat konkrétní kalendář, bude použit výchozí.';
 $lang['google_calendar_selected'] = 'Kalendář Google byl úspěšně vybrán.';
 $lang['oops_something_went_wrong'] = 'Oops! Něco se pokazilo.';
 $lang['could_not_add_to_google_calendar'] = 'Vaše schůzka nemohla být přidána do vašeho Kalendáře Google.';
@@ -281,14 +281,14 @@ $lang['date_format'] = 'Formát datumu';
 $lang['date_format_hint'] = 'Změnit zobrazovaný formát datumu (D - datum, M - měsíc, Y - rok).';
 $lang['time_format'] = 'Formát času';
 $lang['time_format_hint'] = 'Změnit zobrazovaný formát času (H - hodiny, M - minuty).';
-$lang['first_weekday'] = 'First day of week';
-$lang['first_weekday_hint'] = 'Set the first day of the calendar week.';
+$lang['first_weekday'] = 'První den v týdnu';
+$lang['first_weekday_hint'] = 'Nastavte první den v kalendářním týdnu.';
 $lang['google_analytics_code_hint'] = 'Přidat do stránky rezervací vaše Google Analytics ID.';
 $lang['availabilities_type'] = 'Typy dostupnosti';
 $lang['flexible'] = 'Flexibilní';
 $lang['fixed'] = 'Fixní';
 $lang['attendants_number'] = 'Počet účastníků';
-$lang['reset_working_plan'] = 'Resetovat pracovní dobu na defaultní hodnoty.';
+$lang['reset_working_plan'] = 'Resetovat pracovní dobu na výchozí hodnoty.';
 $lang['legal_contents'] = 'Právní obsah';
 $lang['cookie_notice'] = 'Cookie upozornění';
 $lang['display_cookie_notice'] = 'Zobrazit Cookie upozornění';
@@ -299,7 +299,7 @@ $lang['terms_and_conditions_content'] = 'Obsah obchodních podmínek';
 $lang['privacy_policy'] = 'Zásady ochrany osobních údajů';
 $lang['display_privacy_policy'] = 'Zobrazit zásady ochrany osobních údajů';
 $lang['privacy_policy_content'] = 'Obsah zásad ochrany osobních údajů';
-$lang['website_using_cookies_to_ensure_best_experience'] = 'Tyto webové stránky používají cookies pro zajištění vaší nejlepší zkušenosti na našich webových stránkách.';
+$lang['website_using_cookies_to_ensure_best_experience'] = 'Tyto webové stránky používají cookies pro zajištění co nejlepšího prožitku na našich webových stránkách.';
 $lang['read_and_agree_to_terms_and_conditions'] = 'Přečetl jsem a souhlasím s {$link}Obchodními podmínkami{/$link}.';
 $lang['read_and_agree_to_privacy_policy'] = 'Přečetl jsem a souhlasím se {$link}Zásadami ochrany osobních údajů{/$link}.';
 $lang['delete_personal_information_hint'] = 'Odstranit ze systému všechny osobní údaje.';
@@ -316,10 +316,10 @@ $lang['add_working_plan_exceptions_during_each_day'] = 'Přidat výjimku z praco
 $lang['add_working_plan_exception'] = 'Přidat výjimku z pracovního plánu';
 $lang['require_phone_number'] = 'Vyžadovat telefonní číslo';
 $lang['require_phone_number_hint'] = 'Pokud je zapnuto, uživatelé a zákazníci musí vyplnit své telefonní číslo při sjednávání schůzky.';
-$lang['check_spam_folder'] = 'Prosím, zkontrolujte svou SPAM schránku, pokud email v nekolika minutách nedorazí.';
-$lang['api_token_hint'] = 'Nastavte bezpečnostní token, aby jste povolili autentizaci tokenem v  API Easy!Appointments.';
+$lang['check_spam_folder'] = 'Zkontrolujte prosím svou SPAM schránku, pokud email v několika minutách nedorazí.';
+$lang['api_token_hint'] = 'Nastavte bezpečnostní token, abyste povolili autentizaci tokenem v API Easy!Appointments.';
 $lang['timezone'] = 'Časová zóna';
-$lang['overwrite_existing_working_plans'] = 'Tímto nahradíte současné pracovní plány. Opravdu jste si jisti, že chcete pokračovat ?';
+$lang['overwrite_existing_working_plans'] = 'Tímto nahradíte současné pracovní plány. Opravdu jste si jisti, že chcete pokračovat?';
 $lang['working_plans_got_updated'] = 'Všechny pracovní plány byly aktualizovány.';
 $lang['apply_to_all_providers'] = 'Použít pro všechny poskytovatele';
 $lang['display_any_provider'] = 'Zobrazit možnost "Jakýkoli poskytovatel"';

From e626e277cdc33de3a7af7cb5344dfe6947a43f09 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:26:12 +0200
Subject: [PATCH 59/72] The backend appointment removal is using the
 notifications library

---
 application/controllers/Backend_api.php | 93 +------------------------
 application/libraries/Notifications.php | 11 ++-
 2 files changed, 11 insertions(+), 93 deletions(-)

diff --git a/application/controllers/Backend_api.php b/application/controllers/Backend_api.php
index 4abc641c..e562e19c 100755
--- a/application/controllers/Backend_api.php
+++ b/application/controllers/Backend_api.php
@@ -362,98 +362,9 @@ class Backend_api extends EA_Controller {
             // Delete appointment record from the database.
             $this->appointments_model->delete($this->input->post('appointment_id'));
 
-            // Sync removal with Google Calendar.
-            if ($appointment['id_google_calendar'] != NULL)
-            {
-                try
-                {
-                    $google_sync = $this->providers_model->get_setting('google_sync', $provider['id']);
+            $this->notifications->notify_appointment_deleted($appointment, $service, $provider, $customer, $settings);
 
-                    if ($google_sync == TRUE)
-                    {
-                        $google_token = json_decode($this->providers_model
-                            ->get_setting('google_token', $provider['id']));
-                        $this->google_sync->refresh_token($google_token->refresh_token);
-                        $this->google_sync->delete_appointment($provider, $appointment['id_google_calendar']);
-                    }
-                }
-                catch (Exception $exception)
-                {
-                    $warnings[] = [
-                        'message' => $exception->getMessage(),
-                        'trace' => config('debug') ? $exception->getTrace() : []
-                    ];
-                }
-            }
-
-            // Send notification emails to provider and customer.
-            try
-            {
-                $this->config->load('email');
-
-                $email = new EmailClient($this, $this->config->config);
-
-                $send_provider = $this->providers_model
-                    ->get_setting('notifications', $provider['id']);
-
-                if ((bool)$send_provider === TRUE)
-                {
-                    $email->send_delete_appointment($appointment, $provider,
-                        $service, $customer, $settings, new Email($provider['email']),
-                        new Text($this->input->post('delete_reason')));
-                }
-
-                $send_customer = $this->settings_model->get_setting('customer_notifications');
-
-                if ((bool)$send_customer === TRUE)
-                {
-                    $email->send_delete_appointment($appointment, $provider,
-                        $service, $customer, $settings, new Email($customer['email']),
-                        new Text($this->input->post('delete_reason')));
-                }
-
-                // Notify admins
-                $admins = $this->admins_model->get_batch();
-
-                foreach ($admins as $admin)
-                {
-                    if ( ! $admin['settings']['notifications'] === '0')
-                    {
-                        continue;
-                    }
-
-                    $email->send_delete_appointment($appointment, $provider,
-                        $service, $customer, $settings, new Email($admin['email']),
-                        new Text($this->input->post('cancel_reason')));
-                }
-
-                // Notify secretaries
-                $secretaries = $this->secretaries_model->get_batch();
-
-                foreach ($secretaries as $secretary)
-                {
-                    if ( ! $secretary['settings']['notifications'] === '0')
-                    {
-                        continue;
-                    }
-
-                    if (in_array($provider['id'], $secretary['providers']))
-                    {
-                        continue;
-                    }
-
-                    $email->send_delete_appointment($appointment, $provider,
-                        $service, $customer, $settings, new Email($secretary['email']),
-                        new Text($this->input->post('cancel_reason')));
-                }
-            }
-            catch (Exception $exception)
-            {
-                $warnings[] = [
-                    'message' => $exception->getMessage(),
-                    'trace' => config('debug') ? $exception->getTrace() : []
-                ];
-            }
+            $this->synchronization->sync_appointment_deleted($appointment, $provider);
 
             if (empty($warnings))
             {
diff --git a/application/libraries/Notifications.php b/application/libraries/Notifications.php
index 86ac282e..a691fca1 100644
--- a/application/libraries/Notifications.php
+++ b/application/libraries/Notifications.php
@@ -163,6 +163,13 @@ class Notifications {
         {
             $email = new EmailClient($this->CI, $this->CI->config->config);
 
+            $delete_reason = (string)$this->CI->input->post('delete_reason');
+
+            if ( ! $delete_reason)
+            {
+                $delete_reason = (string)$this->CI->input->post('cancel_reason');
+            }
+
             $send_provider = filter_var($this->CI->providers_model->get_setting('notifications', $provider['id']),
                 FILTER_VALIDATE_BOOLEAN);
 
@@ -170,7 +177,7 @@ class Notifications {
             {
                 $email->send_delete_appointment($appointment, $provider,
                     $service, $customer, $settings, new Email($provider['email']),
-                    new Text($this->CI->input->post('cancel_reason')));
+                    new Text($delete_reason));
             }
 
             $send_customer = filter_var(
@@ -181,7 +188,7 @@ class Notifications {
             {
                 $email->send_delete_appointment($appointment, $provider,
                     $service, $customer, $settings, new Email($customer['email']),
-                    new Text($this->CI->input->post('cancel_reason')));
+                    new Text($delete_reason));
             }
 
             // Notify admins

From 7b60156b876ee77fafe926407b366d44541e1103 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:26:29 +0200
Subject: [PATCH 60/72] CSS fix for the custom checkbox switchers

---
 assets/css/backend.css | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/assets/css/backend.css b/assets/css/backend.css
index 7012be4b..41d319a1 100644
--- a/assets/css/backend.css
+++ b/assets/css/backend.css
@@ -267,7 +267,7 @@ body legend {
     margin-bottom: 20px;
 }
 
-.record-details input:read-only,
+.record-details input:read-only:not(.custom-control-input),
 .record-details select:disabled,
 .record-details textarea:read-only {
     opacity: 0.85;

From a03a9e27ef65aca53c50dc9343bb7bc096780bc6 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:26:48 +0200
Subject: [PATCH 61/72] Added file comment-banner

---
 assets/js/login.js | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/assets/js/login.js b/assets/js/login.js
index 15a33d6d..46a19c24 100644
--- a/assets/js/login.js
+++ b/assets/js/login.js
@@ -1,3 +1,14 @@
+/* ----------------------------------------------------------------------------
+ * Easy!Appointments - Open Source Web Scheduler
+ *
+ * @package     EasyAppointments
+ * @author      A.Tselegidis <alextselegidis@gmail.com>
+ * @copyright   Copyright (c) 2013 - 2020, Alex Tselegidis
+ * @license     http://opensource.org/licenses/GPL-3.0 - GPLv3
+ * @link        http://easyappointments.org
+ * @since       v1.4.0
+ * ---------------------------------------------------------------------------- */
+ 
 $(function () {
     'use strict';
 

From f20c323da0238f0c752a7a10da50e66a9c58625f Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:27:08 +0200
Subject: [PATCH 62/72] Replaced the email validation regex with a better one

---
 assets/js/general_functions.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/assets/js/general_functions.js b/assets/js/general_functions.js
index 235120d1..96b1deb2 100755
--- a/assets/js/general_functions.js
+++ b/assets/js/general_functions.js
@@ -227,7 +227,7 @@ window.GeneralFunctions = window.GeneralFunctions || {};
      * @return {Boolean} Returns the validation result.
      */
     exports.validateEmail = function (email) {
-        var re = /^([^\x00-\x20\x22\x28\x29\x2c\x2e\x3a-\x3c\x3e\x40\x5b-\x5d\x7f-\xff]+|\x22([^\x0d\x22\x5c\x80-\xff]|\x5c[\x00-\x7f])*\x22)(\x2e([^\x00-\x20\x22\x28\x29\x2c\x2e\x3a-\x3c\x3e\x40\x5b-\x5d\x7f-\xff]+|\x22([^\x0d\x22\x5c\x80-\xff]|\x5c[\x00-\x7f])*\x22))*\x40([^\x00-\x20\x22\x28\x29\x2c\x2e\x3a-\x3c\x3e\x40\x5b-\x5d\x7f-\xff]+|\x5b([^\x0d\x5b-\x5d\x80-\xff]|\x5c[\x00-\x7f])*\x5d)(\x2e([^\x00-\x20\x22\x28\x29\x2c\x2e\x3a-\x3c\x3e\x40\x5b-\x5d\x7f-\xff]+|\x5b([^\x0d\x5b-\x5d\x80-\xff]|\x5c[\x00-\x7f])*\x5d))*$/;
+        var re = /(?:[a-z0-9!#$%&'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+\/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9]))\.){3}(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])/;
         return re.test(email);
     };
 

From 9407f23c0e968d75e08cb44875d8c0f5b872a4a7 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:27:32 +0200
Subject: [PATCH 63/72] Added missing validation call in system settings

---
 assets/js/backend_settings_system.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/assets/js/backend_settings_system.js b/assets/js/backend_settings_system.js
index 46cb4fd8..afdad951 100644
--- a/assets/js/backend_settings_system.js
+++ b/assets/js/backend_settings_system.js
@@ -29,6 +29,10 @@
      * @param {Array} settings Contains the system settings data.
      */
     SystemSettings.prototype.save = function (settings) {
+        if (!this.validate()) {
+            return; // Validation failed, do not proceed.
+        }
+        
         var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_save_settings';
 
         var data = {

From 046fc72d1d9be71438c88027bc6e1cb89e69dfcb Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:27:50 +0200
Subject: [PATCH 64/72] Mark required the fields of the settings page

---
 application/views/backend/settings.php | 84 ++++++++++++++++++++------
 1 file changed, 65 insertions(+), 19 deletions(-)

diff --git a/application/views/backend/settings.php b/application/views/backend/settings.php
index 6e2669e8..a3030408 100755
--- a/application/views/backend/settings.php
+++ b/application/views/backend/settings.php
@@ -80,7 +80,10 @@
                     <div class="wrapper row">
                         <div class="col-12 col-sm-6">
                             <div class="form-group">
-                                <label for="company-name"><?= lang('company_name') ?> *</label>
+                                <label for="company-name">
+                                    <?= lang('company_name') ?>
+                                    <span class="text-danger">*</span>
+                                </label>
                                 <input id="company-name" data-field="company_name" class="required form-control">
                                 <span class="form-text text-muted">
                                     <?= lang('company_name_hint') ?>
@@ -88,7 +91,10 @@
                             </div>
 
                             <div class="form-group">
-                                <label for="company-email"><?= lang('company_email') ?> *</label>
+                                <label for="company-email">
+                                    <?= lang('company_email') ?>
+                                    <span class="text-danger">*</span>
+                                </label>
                                 <input id="company-email" data-field="company_email" class="required form-control">
                                 <span class="form-text text-muted">
                                     <?= lang('company_email_hint') ?>
@@ -96,7 +102,10 @@
                             </div>
 
                             <div class="form-group">
-                                <label for="company-link"><?= lang('company_link') ?> *</label>
+                                <label for="company-link">
+                                    <?= lang('company_link') ?>
+                                    <span class="text-danger">*</span>
+                                </label>
                                 <input id="company-link" data-field="company_link" class="required form-control">
                                 <span class="form-text text-muted">
                                     <?= lang('company_link_hint') ?>
@@ -402,77 +411,112 @@
                         <input type="hidden" id="user-id">
 
                         <div class="form-group">
-                            <label for="first-name"><?= lang('first_name') ?> *</label>
+                            <label for="first-name">
+                                <?= lang('first_name') ?>
+                                <span class="text-danger">*</span>
+                            </label>
                             <input id="first-name" class="form-control required">
                         </div>
 
                         <div class="form-group">
-                            <label for="last-name"><?= lang('last_name') ?> *</label>
+                            <label for="last-name">
+                                <?= lang('last_name') ?>
+                                <span class="text-danger">*</span>
+                            </label>
                             <input id="last-name" class="form-control required">
                         </div>
 
                         <div class="form-group">
-                            <label for="email"><?= lang('email') ?> *</label>
+                            <label for="email">
+                                <?= lang('email') ?>
+                                <span class="text-danger">*</span>
+                            </label>
                             <input id="email" class="form-control required">
                         </div>
 
                         <div class="form-group">
-                            <label for="phone-number"><?= lang('phone_number') ?> *</label>
+                            <label for="phone-number">
+                                <?= lang('phone_number') ?>
+                                <span class="text-danger">*</span>
+                            </label>
                             <input id="phone-number" class="form-control required">
                         </div>
 
                         <div class="form-group">
-                            <label for="mobile-number"><?= lang('mobile_number') ?></label>
+                            <label for="mobile-number">
+                                <?= lang('mobile_number') ?>
+                            </label>
                             <input id="mobile-number" class="form-control">
                         </div>
 
                         <div class="form-group">
-                            <label for="address"><?= lang('address') ?></label>
+                            <label for="address">
+                                <?= lang('address') ?>
+                            </label>
                             <input id="address" class="form-control">
                         </div>
 
                         <div class="form-group">
-                            <label for="city"><?= lang('city') ?></label>
+                            <label for="city">
+                                <?= lang('city') ?>
+                            </label>
                             <input id="city" class="form-control">
                         </div>
 
                         <div class="form-group">
-                            <label for="state"><?= lang('state') ?></label>
+                            <label for="state">
+                                <?= lang('state') ?>
+                            </label>
                             <input id="state" class="form-control">
                         </div>
 
                         <div class="form-group">
-                            <label for="zip-code"><?= lang('zip_code') ?></label>
+                            <label for="zip-code">
+                                <?= lang('zip_code') ?>
+                            </label>
                             <input id="zip-code" class="form-control">
                         </div>
 
                         <div class="form-group">
-                            <label for="notes"><?= lang('notes') ?></label>
+                            <label for="notes">
+                                <?= lang('notes') ?>
+                            </label>
                             <textarea id="notes" class="form-control" rows="3"></textarea>
                         </div>
                     </fieldset>
 
                     <fieldset class="col-12 col-sm-6 miscellaneous-wrapper">
-                        <legend class="border-bottom mb-4"><?= lang('system_login') ?></legend>
+                        <legend class="border-bottom mb-4">
+                            <?= lang('system_login') ?>
+                        </legend>
 
                         <div class="form-group">
-                            <label for="username"><?= lang('username') ?> *</label>
+                            <label for="username">
+                                <?= lang('username') ?>
+                                <span class="text-danger">*</span>
+                            </label>
                             <input id="username" class="form-control required">
                         </div>
 
                         <div class="form-group">
-                            <label for="password"><?= lang('password') ?></label>
+                            <label for="password">
+                                <?= lang('password') ?>
+                            </label>
                             <input type="password" id="password" class="form-control" autocomplete="new-password">
                         </div>
 
                         <div class="form-group">
-                            <label for="retype-password"><?= lang('retype_password') ?></label>
+                            <label for="retype-password">
+                                <?= lang('retype_password') ?>
+                            </label>
                             <input type="password" id="retype-password" class="form-control"
                                    autocomplete="new-password">
                         </div>
 
                         <div class="form-group">
-                            <label for="calendar-view"><?= lang('calendar') ?> *</label>
+                            <label for="calendar-view"><?= lang('calendar') ?>
+                                <span class="text-danger">*</span>
+                            </label>
                             <select id="calendar-view" class="form-control required">
                                 <option value="default">Default</option>
                                 <option value="table">Table</option>
@@ -480,7 +524,9 @@
                         </div>
 
                         <div class="form-group">
-                            <label for="timezone"><?= lang('timezone') ?></label>
+                            <label for="timezone">
+                                <?= lang('timezone') ?>
+                            </label>
                             <?= render_timezone_dropdown('id="timezone" class="form-control"') ?>
                         </div>
 

From 870938c775f0f04b3edde2adbfd0612615010ea7 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 4 Oct 2021 09:32:08 +0200
Subject: [PATCH 65/72] Added security policy file to the repo (#1122)

---
 .github/SECURITY.md | 4 ++++
 1 file changed, 4 insertions(+)
 create mode 100644 .github/SECURITY.md

diff --git a/.github/SECURITY.md b/.github/SECURITY.md
new file mode 100644
index 00000000..1870e6f1
--- /dev/null
+++ b/.github/SECURITY.md
@@ -0,0 +1,4 @@
+# Security Vulnerabilities
+
+If you discover a security vulnerability within Easy!Appointments, please send an email to info@easyappointments.org. 
+All security vulnerabilities will be promptly addressed.

From a9db9a0a925f79d50604314247f4c3de94517c8e Mon Sep 17 00:00:00 2001
From: Vasileios Lourdas <dev@lourdas.eu>
Date: Sun, 26 Sep 2021 20:01:24 +0300
Subject: [PATCH 66/72] Updated Greek language file.

Fixed a few typos and translated a couple of messages.
---
 .../language/greek/translations_lang.php      | 44 +++++++++----------
 1 file changed, 22 insertions(+), 22 deletions(-)

diff --git a/application/language/greek/translations_lang.php b/application/language/greek/translations_lang.php
index 3c40f478..8477b3da 100755
--- a/application/language/greek/translations_lang.php
+++ b/application/language/greek/translations_lang.php
@@ -3,7 +3,7 @@
 $lang['page_title'] = 'Κράτηση Ραντεβού Με';
 $lang['service_and_provider'] = 'Υπηρεσία & Πάροχος';
 $lang['select_service'] = 'Επιλογή Υπηρεσίας';
-$lang['select_provider'] = 'Επιλογή Πάροχου';
+$lang['select_provider'] = 'Επιλογή Παρόχου';
 $lang['duration'] = 'Διάρκεια';
 $lang['minutes'] = 'Λεπτά';
 $lang['price'] = 'Τιμή';
@@ -21,8 +21,8 @@ $lang['address'] = 'Διεύθυνση';
 $lang['city'] = 'Πόλη';
 $lang['zip_code'] = 'Ταχυδρομικός Κώδικας';
 $lang['notes'] = 'Σημειώσεις';
-$lang['language'] = 'Language';
-$lang['no_language'] = 'No language';
+$lang['language'] = 'Γλώσσα';
+$lang['no_language'] = 'Χωρίς γλώσσα';
 $lang['fields_are_required'] = 'Τα πεδία με * είναι υποχρεωτικά.';
 $lang['appointment_confirmation'] = 'Επιβεβαίωση Ραντεβού';
 $lang['confirm'] = 'Επιβεβαίωση';
@@ -53,8 +53,8 @@ $lang['appointment_added_to_google_calendar'] = 'Το ραντεβού έχει
 $lang['view_appointment_in_google_calendar'] = 'Πατήστε εδώ για να δείτε το ραντεβού στο Google Calendar.';
 $lang['appointment_added_to_your_plan'] = 'Ένα νέο ραντεβού έχει προστεθεί στο πλάνο σας.';
 $lang['appointment_link_description'] = 'Μπορείτε να πραγματοποιήσετε αλλαγές πατώντας στον σύνδεσμο του ραντεβού.';
-$lang['appointment_locked'] = 'Modification impossible.';
-$lang['appointment_locked_message'] = 'The appointment cannot be changed less than {$limit} hours in advance.';
+$lang['appointment_locked'] = 'Αδύνατη η τροποποίηση.';
+$lang['appointment_locked_message'] = 'Το ραντεβού δεν μπορεί να αλλάξει σε διάστημα λιγότερο πριν από {$limit} ώρες.';
 $lang['appointment_not_found'] = 'Το Ραντεβού Δεν Βρέθηκε.';
 $lang['appointment_does_not_exist_in_db'] = 'Το ραντεβού που ζητήσατε δεν υπάρχει πλέον στην βάση δεδομένων του συστήματος.';
 $lang['display_calendar'] = 'Προβολή Ημερολογίου';
@@ -65,7 +65,7 @@ $lang['log_out'] = 'Αποσύνδεση';
 $lang['synchronize'] = 'Συγχρονισμός';
 $lang['enable_sync'] = 'Ενεργοποίηση Συγχρ.';
 $lang['disable_sync'] = 'Απενεργοποίηση Συγχρ.';
-$lang['disable_sync_prompt'] = 'Are you sure that you want to disable the calendar synchronization?';
+$lang['disable_sync_prompt'] = 'Είστε σίγουροι ότι επιθυμείτε την απενεργοποίηση συγχρονισμού του ημερολογίου;';
 $lang['reload'] = 'Επαναφόρτωση';
 $lang['appointment'] = 'Ραντεβού';
 $lang['unavailable'] = 'Μη Διαθέσιμος';
@@ -78,15 +78,15 @@ $lang['add'] = 'Προσθήκη';
 $lang['edit'] = 'Επεξεργασία';
 $lang['hello'] = 'Χαίρετε';
 $lang['all_day'] = 'Ολοήμερο';
-$lang['manage_appointment_record_hint'] = 'Διαχειριστείτε όλες τις εγγραφές ραντεβού των διαθέσιμων πάροχων και υπηρεσιών.';
+$lang['manage_appointment_record_hint'] = 'Διαχειριστείτε όλες τις εγγραφές ραντεβού των διαθέσιμων παρόχων και υπηρεσιών.';
 $lang['select_filter_item_hint'] = 'Επιλέξτε τον πάροχο ή την υπηρεσία και δείτε τα ραντεβού στο ημερολόγιο.';
-$lang['enable_appointment_sync_hint'] = 'Ενεργοποιείστε τον συγχρονισμό ραντεβού με τον λογαριασμό Google Calendar του πάροχου.';
-$lang['manage_customers_hint'] = 'Διαχειριστείτε του καταχωρημένους πελάτες και δείτε το ιστορικό των κρατήσεων τους.';
+$lang['enable_appointment_sync_hint'] = 'Ενεργοποιείστε τον συγχρονισμό ραντεβού με τον λογαριασμό Google Calendar του παρόχου.';
+$lang['manage_customers_hint'] = 'Διαχειριστείτε τους καταχωρημένους πελάτες και δείτε το ιστορικό των κρατήσεών τους.';
 $lang['manage_services_hint'] = 'Διαχειριστείτε όλες τις διαθέσιμες υπηρεσίες και κατηγορίες του συστήματος.';
 $lang['manage_users_hint'] = 'Διαχειριστείτε τους χρήστες του backend (διαχειριστές, πάροχοι, γραμματείς).';
 $lang['settings_hint'] = 'Επεξεργαστείτε τις ρυθμίσεις του συστήματος ή του τρέχοντος χρήστη.';
 $lang['log_out_hint'] = 'Αποσυνδεθείτε από το σύστημα.';
-$lang['unavailable_periods_hint'] = 'Κατά την διάρκεια των μη διαθέσιμων διαστημάτων οι πάροχοι δεν θα δέχονται νέα ραντεβού.';
+$lang['unavailable_periods_hint'] = 'Κατά την διάρκεια των μη διαθέσιμων διαστημάτων οι πάροχοι δε θα δέχονται νέα ραντεβού.';
 $lang['new_appointment_hint'] = 'Δημιουργείστε ένα νέο ραντεβού και αποθηκεύστε το στην βάση δεδομένων.';
 $lang['reload_appointments_hint'] = 'Επαναφορτώστε τα ραντεβού του ημερολογίου.';
 $lang['trigger_google_sync_hint'] = 'Εκκινήστε την διαδικασία συγχρονισμού με το Google Calendar.';
@@ -100,7 +100,7 @@ $lang['select'] = 'Επιλογή';
 $lang['hide'] = 'Απόκρυψη';
 $lang['type_to_filter_customers'] = 'Πληκτρολογήστε για να φιλτράρετε τους πελάτες.';
 $lang['clear_fields_add_existing_customer_hint'] = 'Καθαρισμός των πεδίων και εισαγωγή νέου πελάτη.';
-$lang['pick_existing_customer_hint'] = 'Επιλογή ενός υπάρχων πελάτη.';
+$lang['pick_existing_customer_hint'] = 'Επιλογή ενός υπάρχοντος πελάτη.';
 $lang['new_appointment_title'] = 'Νέο Ραντεβού';
 $lang['edit_appointment_title'] = 'Επεξεργασία Ραντεβού';
 $lang['delete_appointment_title'] = 'Διαγραφή Ραντεβού';
@@ -110,7 +110,7 @@ $lang['new_unavailable_title'] = 'Νέα Μη Διαθέσιμη Περίοδο
 $lang['edit_unavailable_title'] = 'Επεξεργασία Μη Διαθέσιμης Περιόδου';
 $lang['unavailable_saved'] = 'Η μη διαθέσιμη περίοδος αποθηκεύτηκε επιτυχώς.';
 $lang['start_date_before_end_error'] = 'Η ημερομηνία εκκίνησης είναι μεγαλύτερα από την ημερομηνία λήξης.';
-$lang['invalid_duration'] = 'Invalid duration.';
+$lang['invalid_duration'] = 'Μη έγκυρη διάρκεια.';
 $lang['invalid_email'] = 'Λανθασμένη διεύθυνση email.';
 $lang['customers'] = 'Πελάτες';
 $lang['details'] = 'Λεπτομέρειες';
@@ -166,17 +166,17 @@ $lang['company_name_hint'] = 'Το όνομα της εταιρείας θα ε
 $lang['company_email'] = 'Email Εταιρείας';
 $lang['company_email_hint'] = 'Αυτή θα είναι η ηλεκτρονική διεύθυνση της εταιρείας. Θα χρησιμοποιείται ως η διεύθυνση του αποστολέα για τα email του συστήματος (απαιτείται).';
 $lang['company_link'] = 'Σύνδεσμος Εταιρείας';
-$lang['company_link_hint'] = 'Ο σύνδεσμος εταιρείας θα πρέπει να δείχνει στην επίσιμη ιστοσελίδα της εταιρείας (απαιτείται).';
+$lang['company_link_hint'] = 'Ο σύνδεσμος εταιρείας θα πρέπει να δείχνει στην επίσημη ιστοσελίδα της εταιρείας (απαιτείται).';
 $lang['go_to_booking_page'] = 'Πλοήγηση Στην Σελίδα Κράτησης';
 $lang['settings_saved'] = 'Οι ρυθμίσεις αποθηκεύτηκαν επιτυχώς.';
 $lang['general'] = 'Γενικά';
 $lang['business_logic'] = 'Επιχειρηματική Λογική';
 $lang['current_user'] = 'Τρέχων Χρήστης';
 $lang['about_app'] = 'Σχετικά με το Easy!Appointments';
-$lang['edit_working_plan_hint'] = 'Σημειώστε παρακάτω τις μέρες και ώρες στις οποίες η εταιρεία θα δέχεται τα ραντεβού. Θα είστε σε θέση να τοποθετήσετε ραντεβού σε μη εργάσιμες ώρες αλλά οι πελάτες δεν θα μπορούν από μόνοι τους να να κάνουν κράτηση σε μη εργάσιμες χρονικές περιόδους. Αυτό το πλάνο εργασίας θα είναι η προεπιλεγμένη ρύθμιση για όλες τις νέες εγγραφές πάροχων υπηρεσιών αλλά θα είστε σε θέση να αλλάξετε το πλάνο του κάθε πάροχου ξεχωριστά, επεξεργάζοντας την εγγραφή του. Μετά από αυτήν την διαδικασία προσθέστε τα διαστήματα τα οποία αντιστοιχούν στα διαλείμματα.';
-$lang['edit_breaks_hint'] = 'Προσθέστε τα εργασιακά διαλείμματα στην ημέρα που αντιστοιχούν. Αυτά τα διαλείμματα θα εφαρμόζονται σε όλους τους νέους πάροχους.';
+$lang['edit_working_plan_hint'] = 'Σημειώστε παρακάτω τις μέρες και ώρες στις οποίες η εταιρεία θα δέχεται τα ραντεβού. Θα είστε σε θέση να τοποθετήσετε ραντεβού σε μη εργάσιμες ώρες αλλά οι πελάτες δεν θα μπορούν από μόνοι τους να κάνουν κράτηση σε μη εργάσιμες χρονικές περιόδους. Αυτό το πλάνο εργασίας θα είναι η προεπιλεγμένη ρύθμιση για όλες τις νέες εγγραφές παρόχων υπηρεσιών αλλά θα είστε σε θέση να αλλάξετε το πλάνο του κάθε παρόχου ξεχωριστά, επεξεργάζοντας την εγγραφή του. Μετά από αυτήν την διαδικασία προσθέστε τα διαστήματα τα οποία αντιστοιχούν στα διαλείμματα.';
+$lang['edit_breaks_hint'] = 'Προσθέστε τα εργασιακά διαλείμματα στην ημέρα που αντιστοιχούν. Αυτά τα διαλείμματα θα εφαρμόζονται σε όλους τους νέους παρόχους.';
 $lang['book_advance_timeout'] = 'Χρονικό Όριο Πριν Από Κράτηση';
-$lang['book_advance_timeout_hint'] = 'Ορίστε το χρονικό περιθώριο (σε λεπτά) πριν οι πελάτες να μπορέσουν να κρατήσουν ή να τροποποιήσουν τα ραντεβού  με την εταιρεία.';
+$lang['book_advance_timeout_hint'] = 'Ορίστε το χρονικό περιθώριο (σε λεπτά) πριν οι πελάτες να μπορέσουν να κρατήσουν ή να τροποποιήσουν τα ραντεβού με την εταιρεία.';
 $lang['timeout_minutes'] = 'Χρονικό Όριο (Λεπτά)';
 $lang['about_app_info'] = 'Το Easy!Appointments είναι μια εξαιρετικά προσαρμόσιμη διαδικτυακή εφαρμογή η οποία επιτρέπει στους πελάτες σας να κλείνουν ραντεβού με εσάς μέσω του διαδικτύου. Επιπλέον παρέχει την δυνατότητα να συγχρονίσετε τα δεδομένα σας με το Google Calendar έτσι ώστε να μπορέσετε να τα χρησιμοποιήσετε με άλλες υπηρεσίες.';
 $lang['current_version'] = 'Τρέχουσα Έκδοση';
@@ -196,7 +196,7 @@ $lang['enter_username_here'] = 'Εισάγετε το όνομα χρήστη σ
 $lang['enter_password_here'] = 'Εισάγετε τον κωδικό σας εδώ ...';
 $lang['login'] = 'Σύνδεση';
 $lang['forgot_your_password'] = 'Ξεχάσατε τον κωδικό σας;';
-$lang['login_failed'] = 'Η σύνδεση απέτυχε, παρακαλώ εισάγετε τα σωστά στοιχεία σύνδεσης  και δοκιμάστε ξανά.';
+$lang['login_failed'] = 'Η σύνδεση απέτυχε, παρακαλώ εισάγετε τα σωστά στοιχεία σύνδεσης και δοκιμάστε ξανά.';
 $lang['type_username_and_email_for_new_password'] = 'Εισάγετε το όνομα χρήστη και την διεύθυνση email για να λάβετε τον καινούργιο κωδικό πρόσβασης.';
 $lang['enter_email_here'] = 'Εισάγετε το email σας εδώ ...';
 $lang['regenerate_password'] = 'Παραγωγή Κωδικού';
@@ -209,7 +209,7 @@ $lang['delete_admin'] = 'Διαγραφή Διαχειριστή';
 $lang['delete_customer'] = 'Διαγραφή Πελάτη';
 $lang['delete_service'] = 'Διαγραφή Υπηρεσίας';
 $lang['delete_category'] = 'Διαγραφή Κατηγορίας Υπηρεσιών';
-$lang['delete_provider'] = 'Διαγραφή Πάροχου';
+$lang['delete_provider'] = 'Διαγραφή Παρόχου';
 $lang['delete_secretary'] = 'Διαγραφή Γραμματέα';
 $lang['delete_appointment'] = 'Διαγραφή Ραντεβού';
 $lang['delete_unavailable'] = 'Διαγραφή Μη Διαθέσιμης Περιόδου';
@@ -281,8 +281,8 @@ $lang['date_format'] = 'Μορφή Ημερομηνίας';
 $lang['date_format_hint'] = 'Αλλάξτε την μορφή ημερομηνίας (D - Ημέρα, M - Μήνας, Y - Χρόνος).';
 $lang['time_format'] = 'Μορφή Ώρας';
 $lang['time_format_hint'] = 'Αλλάξτε την μορφή ώρας (H - Ώρα, M - Λεπτά).';
-$lang['first_weekday'] = 'First day of week';
-$lang['first_weekday_hint'] = 'Set the first day of the calendar week.';
+$lang['first_weekday'] = 'Πρώτη ημέρα της εβδομάδας';
+$lang['first_weekday_hint'] = 'Καθορίστε την πρώτη ημέρα της εβδομάδας στο ημερολόγιο.';
 $lang['google_analytics_code_hint'] = 'Προσθέστε τον Google Analytics ID σας το οποίο θα συμπεριληφθεί στην σελίδα κράτησης.';
 $lang['availabilities_type'] = 'Τύπος Διαθεσιμοτήτων';
 $lang['flexible'] = 'Ευέλικτος';
@@ -322,11 +322,11 @@ $lang['timezone'] = 'Ζώνη Ώρας';
 $lang['overwrite_existing_working_plans'] = 'Αυτό θα αντικαταστήσει το υπάρχον πλάνο εργασίας του παρόχου, είστε σίγουρος ότι θέλετε να συνεχίσετε;';
 $lang['working_plans_got_updated'] = 'Όλα τα πλάνα εργασίας έχουν ενημερωθεί.';
 $lang['apply_to_all_providers'] = 'Εφαρμογή σε όλους τος παρόχους';
-$lang['display_any_provider'] = 'Προβολή Οποιοδήποτε Πάροχου';
+$lang['display_any_provider'] = 'Προβολή Οποιοδήποτε Παρόχου';
 $lang['display_any_provider_hint'] = 'Η σελίδα κράτησης θα εμφανίσει μια επιπλέον επιλογή η οποία θα επιτρέπει στους πελάτης να κάνουν κρατήσεις, χωρίς να επιλέξουν κάποιο πάροχο.';
 $lang['load_more'] = 'Φόρτωση Περισσότερων';
 $lang['list'] = 'Λίστα';
-$lang['default'] = 'Προεπιλογμένο';
+$lang['default'] = 'Προεπιλεγμένο';
 $lang['table'] = 'Πίνακας';
 $lang['date'] = 'Ημερομηνία';
 // End

From cbd9e9e41bc4ca80c1a962a8d164940e8b908bac Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 18 Oct 2021 12:19:13 +0200
Subject: [PATCH 67/72] Prepend the "any-provider" option to the booking page
 so that it is the first option displayed.

---
 assets/js/frontend_book.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/assets/js/frontend_book.js b/assets/js/frontend_book.js
index 79cbd991..410e46de 100644
--- a/assets/js/frontend_book.js
+++ b/assets/js/frontend_book.js
@@ -233,7 +233,7 @@ window.FrontendBook = window.FrontendBook || {};
 
             // Add the "Any Provider" entry.
             if ($('#select-provider option').length >= 1 && GlobalVariables.displayAnyProvider === '1') {
-                $('#select-provider').append(new Option('- ' + EALang.any_provider + ' -', 'any-provider', true, true));
+                $('#select-provider').prepend(new Option('- ' + EALang.any_provider + ' -', 'any-provider', true, true));
             }
 
             FrontendBookApi.getUnavailableDates($('#select-provider').val(), $(this).val(),

From cf19ea717ced032c43a44c9d830a71c61f15aaab Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 18 Oct 2021 12:43:40 +0200
Subject: [PATCH 68/72] Condier unavailable time periods that span into
 multiple days (#880).

---
 application/libraries/Availability.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/application/libraries/Availability.php b/application/libraries/Availability.php
index 204a03e2..5ec71507 100644
--- a/application/libraries/Availability.php
+++ b/application/libraries/Availability.php
@@ -341,7 +341,8 @@ class Availability {
     {
         $unavailability_events = $this->CI->appointments_model->get_batch([
             'is_unavailable' => TRUE,
-            'DATE(start_datetime)' => $date,
+            'DATE(start_datetime) <=' => $date,
+            'DATE(end_datetime) >=' => $date,
             'id_users_provider' => $provider['id']
         ]);
 

From a3d6d473fa915985d1cdfe2eb2a5d5c272e856b1 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 18 Oct 2021 13:04:32 +0200
Subject: [PATCH 69/72] When selecting the any provider option in the booking
 page then merge all the available hours of all providers that can serve the
 selected service (#1147).

---
 application/controllers/Appointments.php | 35 +++++++++++++++---------
 1 file changed, 22 insertions(+), 13 deletions(-)

diff --git a/application/controllers/Appointments.php b/application/controllers/Appointments.php
index 8406fea7..296d3e80 100755
--- a/application/controllers/Appointments.php
+++ b/application/controllers/Appointments.php
@@ -338,25 +338,34 @@ class Appointments extends EA_Controller {
 
             // If the user has selected the "any-provider" option then we will need to search for an available provider
             // that will provide the requested service.
+            $service = $this->services_model->get_row($service_id);
+            
             if ($provider_id === ANY_PROVIDER)
             {
-                $provider_id = $this->search_any_provider($service_id, $selected_date);
-
-                if ($provider_id === NULL)
+                $providers = $this->providers_model->get_batch(); 
+                
+                $available_hours = []; 
+                
+                foreach($providers as $provider)
                 {
-                    $this->output
-                        ->set_content_type('application/json')
-                        ->set_output(json_encode([]));
-
-                    return;
+                    if (!in_array($service_id, $provider['services']))
+                    {
+                        continue; 
+                    }
+                    
+                    $provider_available_hours = $this->availability->get_available_hours($selected_date, $service, $provider, $exclude_appointment_id); 
+                    
+                    $available_hours = array_merge($available_hours, $provider_available_hours);
                 }
+
+                $response = array_unique(array_values($available_hours)); 
             }
+            else
+            {
+                $provider = $this->providers_model->get_row($provider_id);
 
-            $service = $this->services_model->get_row($service_id);
-
-            $provider = $this->providers_model->get_row($provider_id);
-
-            $response = $this->availability->get_available_hours($selected_date, $service, $provider, $exclude_appointment_id);
+                $response = $this->availability->get_available_hours($selected_date, $service, $provider, $exclude_appointment_id);
+            }
         }
         catch (Exception $exception)
         {

From 5d8d60a20f44ce5c43eaf4dce23b492d46bcd99d Mon Sep 17 00:00:00 2001
From: Thomas S <epostvanthomas@kpnmail.nl>
Date: Mon, 5 Apr 2021 22:58:37 +0200
Subject: [PATCH 70/72] [1038] Sender and return address set to pass
 spamfilters

---
 engine/Notifications/Email.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/engine/Notifications/Email.php b/engine/Notifications/Email.php
index 24617230..0612f46c 100755
--- a/engine/Notifications/Email.php
+++ b/engine/Notifications/Email.php
@@ -322,6 +322,8 @@ class Email {
             $mailer->Password = $this->config['smtp_pass'];
             $mailer->SMTPSecure = $this->config['smtp_crypto'];
             $mailer->Port = $this->config['smtp_port'];
+            $mailer->Sender = $settings['company_email'];
+            $mailer->SetFrom($settings['company_email'], $settings['company_name'], FALSE); 
         }
 
         $mailer->IsHTML($this->config['mailtype'] === 'html');

From e2ab3068882e158e873783cbb8fea566eed84303 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 18 Oct 2021 13:40:05 +0200
Subject: [PATCH 71/72] Made the tests executable again (#1042).

---
 composer.json                                 |  7 +++--
 composer.lock                                 |  4 +--
 phpunit.xml                                   | 31 +++----------------
 tests/{phpunit => }/bootstrap.php             |  4 +--
 .../engine/Api/V1/AuthorizationTest.php       |  2 +-
 .../engine/Api/V1/FilterTest.php              |  0
 .../engine/Api/V1/MinimizeTest.php            |  0
 .../engine/Api/V1/PaginationTest.php          |  0
 .../engine/Api/V1/ResponseTest.php            |  0
 .../engine/Api/V1/SearchTest.php              |  0
 .../{phpunit => }/engine/Api/V1/SortTest.php  |  0
 .../engine/Api/V1/fixtures/admin.json         |  0
 .../engine/Api/V1/fixtures/appointment.json   |  0
 .../engine/Api/V1/fixtures/category.json      |  0
 .../engine/Api/V1/fixtures/customer.json      |  0
 .../engine/Api/V1/fixtures/provider.json      |  0
 .../engine/Api/V1/fixtures/secretary.json     |  0
 .../engine/Api/V1/fixtures/service.json       |  0
 .../engine/Api/V1/fixtures/setting.json       |  0
 .../Api/V1/fixtures/unavailability.json       |  0
 .../Type => engine/Types}/BooleanTest.php     |  2 +-
 .../Type => engine/Types}/DecimalTest.php     |  2 +-
 .../Type => engine/Types}/EmailTest.php       |  2 +-
 .../Type => engine/Types}/IntegerTest.php     |  2 +-
 .../Types}/NonEmptyTextTest.php               |  2 +-
 .../engine/Type => engine/Types}/TextTest.php |  2 +-
 .../Types}/UnsignedIntegerTest.php            |  2 +-
 .../engine/Type => engine/Types}/UrlTest.php  |  2 +-
 28 files changed, 22 insertions(+), 42 deletions(-)
 rename tests/{phpunit => }/bootstrap.php (84%)
 rename tests/{phpunit => }/engine/Api/V1/AuthorizationTest.php (96%)
 rename tests/{phpunit => }/engine/Api/V1/FilterTest.php (100%)
 rename tests/{phpunit => }/engine/Api/V1/MinimizeTest.php (100%)
 rename tests/{phpunit => }/engine/Api/V1/PaginationTest.php (100%)
 rename tests/{phpunit => }/engine/Api/V1/ResponseTest.php (100%)
 rename tests/{phpunit => }/engine/Api/V1/SearchTest.php (100%)
 rename tests/{phpunit => }/engine/Api/V1/SortTest.php (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/admin.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/appointment.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/category.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/customer.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/provider.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/secretary.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/service.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/setting.json (100%)
 rename tests/{phpunit => }/engine/Api/V1/fixtures/unavailability.json (100%)
 rename tests/{phpunit/engine/Type => engine/Types}/BooleanTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/DecimalTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/EmailTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/IntegerTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/NonEmptyTextTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/TextTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/UnsignedIntegerTest.php (97%)
 rename tests/{phpunit/engine/Type => engine/Types}/UrlTest.php (97%)

diff --git a/composer.json b/composer.json
index 9faad569..7a226909 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,10 @@
     "minimum-stability": "stable",
     "autoload": {
         "psr-4": {
-            "EA\\Engine\\": "engine/"
+            "EA\\Engine\\": [
+                "engine/", 
+                "tests/engine/"
+            ]
         }
     },
     "require": {
@@ -45,7 +48,7 @@
     },
     "require-dev": {
         "roave/security-advisories": "dev-master",
-        "phpunit/phpunit": "^9"
+        "phpunit/phpunit": "^9.5"
     },
     "scripts": {
         "test": "php vendor/bin/phpunit tests"
diff --git a/composer.lock b/composer.lock
index 16b03a30..afb62e73 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "38fd62b1f2842600782427033aa9e826",
+    "content-hash": "691584c0c433458674bdb8e6b295f10c",
     "packages": [
         {
             "name": "firebase/php-jwt",
@@ -3759,5 +3759,5 @@
         "ext-gd": "*"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.0.0"
+    "plugin-api-version": "2.1.0"
 }
diff --git a/phpunit.xml b/phpunit.xml
index 84b8d7cf..5fe174f1 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,31 +1,8 @@
 <phpunit
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/|version|/phpunit.xsd"
-    backupGlobals="true"
-    backupStaticAttributes="false"
-    bootstrap="tests/phpunit/bootstrap.php"
+    xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/phpunit.xsd"
+    bootstrap="tests/bootstrap.php"
+    colors="true"
     cacheResult="false"
-    cacheTokens="false"
-    colors="false"
-    convertErrorsToExceptions="true"
-    convertNoticesToExceptions="true"
-    convertWarningsToExceptions="true"
-    forceCoversAnnotation="false"
-    printerClass="PHPUnit\TextUI\ResultPrinter"
-    processIsolation="false"
-    stopOnError="false"
-    stopOnFailure="false"
-    stopOnIncomplete="false"
-    stopOnSkipped="false"
-    stopOnRisky="false"
-    testSuiteLoaderClass="PHPUnit\Runner\StandardTestSuiteLoader"
-    timeoutForSmallTests="1"
-    timeoutForMediumTests="10"
-    timeoutForLargeTests="60"
-    verbose="false">
-    <filter>
-        <whitelist>
-            <directory suffix=".php">src/engine</directory>
-        </whitelist>
-    </filter>
+>
 </phpunit>
diff --git a/tests/phpunit/bootstrap.php b/tests/bootstrap.php
similarity index 84%
rename from tests/phpunit/bootstrap.php
rename to tests/bootstrap.php
index 40e00a06..d3492010 100644
--- a/tests/phpunit/bootstrap.php
+++ b/tests/bootstrap.php
@@ -13,5 +13,5 @@
 
 // Bootstrap Easy!Appointments PHPUnit Tests
 
-require_once __DIR__ . '/../../config.php';
-require_once __DIR__ . '/../../vendor/autoload.php';
+require_once __DIR__ . '/../config.php';
+require_once __DIR__ . '/../vendor/autoload.php';
diff --git a/tests/phpunit/engine/Api/V1/AuthorizationTest.php b/tests/engine/Api/V1/AuthorizationTest.php
similarity index 96%
rename from tests/phpunit/engine/Api/V1/AuthorizationTest.php
rename to tests/engine/Api/V1/AuthorizationTest.php
index 84349211..45e2f630 100644
--- a/tests/phpunit/engine/Api/V1/AuthorizationTest.php
+++ b/tests/engine/Api/V1/AuthorizationTest.php
@@ -13,7 +13,7 @@
 
 namespace EA\Engine\Api\V1;
 
-use EA\Engine\Type\NonEmptyText;
+use EA\Engine\Types\NonEmptyText;
 use PHPUnit\Framework\TestCase;
 
 class AuthorizationTest extends TestCase {
diff --git a/tests/phpunit/engine/Api/V1/FilterTest.php b/tests/engine/Api/V1/FilterTest.php
similarity index 100%
rename from tests/phpunit/engine/Api/V1/FilterTest.php
rename to tests/engine/Api/V1/FilterTest.php
diff --git a/tests/phpunit/engine/Api/V1/MinimizeTest.php b/tests/engine/Api/V1/MinimizeTest.php
similarity index 100%
rename from tests/phpunit/engine/Api/V1/MinimizeTest.php
rename to tests/engine/Api/V1/MinimizeTest.php
diff --git a/tests/phpunit/engine/Api/V1/PaginationTest.php b/tests/engine/Api/V1/PaginationTest.php
similarity index 100%
rename from tests/phpunit/engine/Api/V1/PaginationTest.php
rename to tests/engine/Api/V1/PaginationTest.php
diff --git a/tests/phpunit/engine/Api/V1/ResponseTest.php b/tests/engine/Api/V1/ResponseTest.php
similarity index 100%
rename from tests/phpunit/engine/Api/V1/ResponseTest.php
rename to tests/engine/Api/V1/ResponseTest.php
diff --git a/tests/phpunit/engine/Api/V1/SearchTest.php b/tests/engine/Api/V1/SearchTest.php
similarity index 100%
rename from tests/phpunit/engine/Api/V1/SearchTest.php
rename to tests/engine/Api/V1/SearchTest.php
diff --git a/tests/phpunit/engine/Api/V1/SortTest.php b/tests/engine/Api/V1/SortTest.php
similarity index 100%
rename from tests/phpunit/engine/Api/V1/SortTest.php
rename to tests/engine/Api/V1/SortTest.php
diff --git a/tests/phpunit/engine/Api/V1/fixtures/admin.json b/tests/engine/Api/V1/fixtures/admin.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/admin.json
rename to tests/engine/Api/V1/fixtures/admin.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/appointment.json b/tests/engine/Api/V1/fixtures/appointment.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/appointment.json
rename to tests/engine/Api/V1/fixtures/appointment.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/category.json b/tests/engine/Api/V1/fixtures/category.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/category.json
rename to tests/engine/Api/V1/fixtures/category.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/customer.json b/tests/engine/Api/V1/fixtures/customer.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/customer.json
rename to tests/engine/Api/V1/fixtures/customer.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/provider.json b/tests/engine/Api/V1/fixtures/provider.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/provider.json
rename to tests/engine/Api/V1/fixtures/provider.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/secretary.json b/tests/engine/Api/V1/fixtures/secretary.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/secretary.json
rename to tests/engine/Api/V1/fixtures/secretary.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/service.json b/tests/engine/Api/V1/fixtures/service.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/service.json
rename to tests/engine/Api/V1/fixtures/service.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/setting.json b/tests/engine/Api/V1/fixtures/setting.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/setting.json
rename to tests/engine/Api/V1/fixtures/setting.json
diff --git a/tests/phpunit/engine/Api/V1/fixtures/unavailability.json b/tests/engine/Api/V1/fixtures/unavailability.json
similarity index 100%
rename from tests/phpunit/engine/Api/V1/fixtures/unavailability.json
rename to tests/engine/Api/V1/fixtures/unavailability.json
diff --git a/tests/phpunit/engine/Type/BooleanTest.php b/tests/engine/Types/BooleanTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/BooleanTest.php
rename to tests/engine/Types/BooleanTest.php
index 098fded6..ddad070e 100644
--- a/tests/phpunit/engine/Type/BooleanTest.php
+++ b/tests/engine/Types/BooleanTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/DecimalTest.php b/tests/engine/Types/DecimalTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/DecimalTest.php
rename to tests/engine/Types/DecimalTest.php
index ab8686e3..aedc4925 100644
--- a/tests/phpunit/engine/Type/DecimalTest.php
+++ b/tests/engine/Types/DecimalTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/EmailTest.php b/tests/engine/Types/EmailTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/EmailTest.php
rename to tests/engine/Types/EmailTest.php
index 327d6eeb..5672f078 100644
--- a/tests/phpunit/engine/Type/EmailTest.php
+++ b/tests/engine/Types/EmailTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/IntegerTest.php b/tests/engine/Types/IntegerTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/IntegerTest.php
rename to tests/engine/Types/IntegerTest.php
index 09bba741..0caadcfb 100644
--- a/tests/phpunit/engine/Type/IntegerTest.php
+++ b/tests/engine/Types/IntegerTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/NonEmptyTextTest.php b/tests/engine/Types/NonEmptyTextTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/NonEmptyTextTest.php
rename to tests/engine/Types/NonEmptyTextTest.php
index 359c0527..bdd85fab 100644
--- a/tests/phpunit/engine/Type/NonEmptyTextTest.php
+++ b/tests/engine/Types/NonEmptyTextTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/TextTest.php b/tests/engine/Types/TextTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/TextTest.php
rename to tests/engine/Types/TextTest.php
index 3fe9e5aa..e7f9b408 100644
--- a/tests/phpunit/engine/Type/TextTest.php
+++ b/tests/engine/Types/TextTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/UnsignedIntegerTest.php b/tests/engine/Types/UnsignedIntegerTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/UnsignedIntegerTest.php
rename to tests/engine/Types/UnsignedIntegerTest.php
index 7f369846..c022c120 100644
--- a/tests/phpunit/engine/Type/UnsignedIntegerTest.php
+++ b/tests/engine/Types/UnsignedIntegerTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 
diff --git a/tests/phpunit/engine/Type/UrlTest.php b/tests/engine/Types/UrlTest.php
similarity index 97%
rename from tests/phpunit/engine/Type/UrlTest.php
rename to tests/engine/Types/UrlTest.php
index 19851c4d..cb9392de 100644
--- a/tests/phpunit/engine/Type/UrlTest.php
+++ b/tests/engine/Types/UrlTest.php
@@ -11,7 +11,7 @@
  * @since       v1.2.0
  * ---------------------------------------------------------------------------- */
 
-namespace EA\Engine\Type;
+namespace EA\Engine\Types;
 
 use PHPUnit\Framework\TestCase;
 

From 6606340da4dea56fd3ea0103b91366b0cd33081a Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Mon, 18 Oct 2021 13:54:38 +0200
Subject: [PATCH 72/72] Update French translations (#1107).

---
 .../language/french/translations_lang.php     | 180 +++++++++---------
 1 file changed, 90 insertions(+), 90 deletions(-)

diff --git a/application/language/french/translations_lang.php b/application/language/french/translations_lang.php
index ee60b9bc..34b0ae5c 100755
--- a/application/language/french/translations_lang.php
+++ b/application/language/french/translations_lang.php
@@ -1,6 +1,6 @@
 <?php defined('BASEPATH') or exit('No direct script access allowed');
 // French
-$lang['page_title'] = 'Prendre rendez-vous avec ...';
+$lang['page_title'] = 'Prendre rendez-vous avec...';
 $lang['service_and_provider'] = 'Choisissez une prestation et un exécutant';
 $lang['select_service'] = 'Choisissez une prestation';
 $lang['select_provider'] = 'Choisissez un exécutant';
@@ -16,7 +16,7 @@ $lang['first_name'] = 'Prénom';
 $lang['last_name'] = 'Nom';
 $lang['email'] = 'Email';
 $lang['phone_number'] = 'Numéro de téléphone';
-$lang['phone'] = 'Phone';
+$lang['phone'] = 'Téléphone';
 $lang['address'] = 'Adresse';
 $lang['city'] = 'Ville';
 $lang['zip_code'] = 'Code postal';
@@ -29,15 +29,15 @@ $lang['confirm'] = 'Confirmation';
 $lang['update'] = 'Mise à jour';
 $lang['cancel_appointment_hint'] = 'Appuyer sur le bouton "Annuler" pour supprimer un rendez-vous de l\'agenda.';
 $lang['cancel'] = 'Annuler';
-$lang['appointment_registered'] = 'Votre rendez-vous a été enregistré avec succès .';
+$lang['appointment_registered'] = 'Votre rendez-vous a été enregistré avec succès.';
 $lang['cancel_appointment_title'] = 'Annuler le rendez-vous';
-$lang['appointment_cancelled'] = 'Votre rendez-vous a bien été annulé .';
+$lang['appointment_cancelled'] = 'Votre rendez-vous a bien été annulé.';
 $lang['appointment_cancelled_title'] = 'Rendez-vous annulé';
 $lang['reason'] = 'Motif';
 $lang['appointment_removed_from_schedule'] = 'Le rendez-vous suivant a été supprimé de l\'agenda.';
 $lang['appointment_details_was_sent_to_you'] = 'Un email reprenant les détails de votre rendez-vous vient de vous être envoyé.';
 $lang['add_to_google_calendar'] = 'Ajouter à Google Calendar';
-$lang['appointment_booked'] = 'Votre rendez-vous a été confirmé avec succès .';
+$lang['appointment_booked'] = 'Votre rendez-vous a été confirmé avec succès.';
 $lang['thank_you_for_appointment'] = 'Merci de votre prise de rendez-vous avec nous. Vous trouvez ci-joint les détails de votre rendez-vous. Si nécessaire, faites les changements souhaités en cliquant sur le lien du rendez-vous.';
 $lang['appointment_details_title'] = 'Détails du rendez-vous';
 $lang['customer_details_title'] = 'Informations client';
@@ -48,14 +48,14 @@ $lang['start'] = 'Début';
 $lang['end'] = 'Fin';
 $lang['name'] = 'Nom';
 $lang['appointment_link_title'] = 'Lien du rendez-vous';
-$lang['success'] = 'Réussi .';
+$lang['success'] = 'Succès.';
 $lang['appointment_added_to_google_calendar'] = 'Votre rendez-vous a été ajouté à votre compte calendrier Google.';
 $lang['view_appointment_in_google_calendar'] = 'Cliquez ici pour voir votre rendez-vous dans le calendrier Google.';
 $lang['appointment_added_to_your_plan'] = 'Un nouveau rendez-vous a été ajouté à votre planning.';
-$lang['appointment_link_description'] = 'Vous pouvez faires des modifications en cliquant sur le lien suivant.';
-$lang['appointment_locked'] = 'Modification impossible .';
+$lang['appointment_link_description'] = 'Vous pouvez faire des modifications en cliquant sur le lien suivant.';
+$lang['appointment_locked'] = 'Modification impossible.';
 $lang['appointment_locked_message'] = 'Le rendez-vous ne peut pas être modifié moins de {$limit} heures avant.';
-$lang['appointment_not_found'] = 'Rendez-vous introuvable .';
+$lang['appointment_not_found'] = 'Rendez-vous introuvable.';
 $lang['appointment_does_not_exist_in_db'] = 'Le rendez-vous demandé n\'existe plus dans la base de données système.';
 $lang['display_calendar'] = 'Afficher le calendrier.';
 $lang['calendar'] = 'Calendrier';
@@ -65,35 +65,35 @@ $lang['log_out'] = 'Déconnexion';
 $lang['synchronize'] = 'Synchronisation';
 $lang['enable_sync'] = 'Activer la synchronisation';
 $lang['disable_sync'] = 'Désactiver la synchronisation';
-$lang['disable_sync_prompt'] = 'Are you sure that you want to disable the calendar synchronization?';
+$lang['disable_sync_prompt'] = 'Êtes-vous sûr de vouloir désactiver la synchronisation du calendrier ?';
 $lang['reload'] = 'Actualiser';
 $lang['appointment'] = 'Rendez-vous';
 $lang['unavailable'] = 'Indisponible';
 $lang['week'] = 'Semaine';
 $lang['month'] = 'Mois';
-$lang['today'] = 'Ajourd\'hui';
+$lang['today'] = 'Aujourd\'hui';
 $lang['not_working'] = 'Pas en fonction';
 $lang['break'] = 'Pause';
 $lang['add'] = 'Ajouter';
-$lang['edit'] = 'Editer';
+$lang['edit'] = 'Éditer';
 $lang['hello'] = 'Bonjour';
 $lang['all_day'] = 'Toute la journée';
 $lang['manage_appointment_record_hint'] = 'Gérer tous les enregistrements de rendez-vous des exécutants et des prestations actives.';
 $lang['select_filter_item_hint'] = 'Choisir un exécutant ou une prestation et visualisez les rendez-vous sur l\'agenda.';
-$lang['enable_appointment_sync_hint'] = 'Activer la synchronisation des rendez-vous avec le calendrier Google de l\'Exécutant.';
+$lang['enable_appointment_sync_hint'] = 'Activer la synchronisation des rendez-vous avec le calendrier Google de l\'exécutant.';
 $lang['manage_customers_hint'] = 'Gérer les clients enregistrés et voir leur historique de rendez-vous.';
 $lang['manage_services_hint'] = 'Gérer les prestations et les catégories actives du système.';
-$lang['manage_users_hint'] = 'Gérer les utilisateurs back office (administrateurs, exécutant, secrétaires).';
+$lang['manage_users_hint'] = 'Gérer les utilisateurs back office (administrateurs, exécutants, secrétaires).';
 $lang['settings_hint'] = 'Régler les paramètres système et utilisateurs.';
 $lang['log_out_hint'] = 'Déconnexion du système.';
-$lang['unavailable_periods_hint'] = 'Durant les périodes d\'indisponibilité l\'Exécutant n\'acceptera pas de nouvelle prestation.';
-$lang['new_appointment_hint'] = 'Créer un nouveau rendez-vous et stocker le dans la base de données.';
+$lang['unavailable_periods_hint'] = 'Durant les périodes d\'indisponibilité l\'exécutant n\'acceptera pas de nouvelle prestation.';
+$lang['new_appointment_hint'] = 'Créer un nouveau rendez-vous et le stocker dans la base de données.';
 $lang['reload_appointments_hint'] = 'Actualiser le calendrier des rendez-vous.';
 $lang['trigger_google_sync_hint'] = 'Démarrer la procédure de synchronisation du calendrier Google.';
-$lang['appointment_updated'] = 'Rendez-vous mis à jour avec succès .';
-$lang['undo'] = 'Défaire';
+$lang['appointment_updated'] = 'Rendez-vous mis à jour avec succès.';
+$lang['undo'] = 'Annuler';
 $lang['appointment_details_changed'] = 'Les détails du rendez-vous ont bien été modifiés.';
-$lang['appointment_changes_saved'] = 'Les modifications du rendez-vous ont été enregistrées .';
+$lang['appointment_changes_saved'] = 'Les modifications du rendez-vous ont été enregistrées.';
 $lang['save'] = 'Enregistrer';
 $lang['new'] = 'Nouveau';
 $lang['select'] = 'Choisir';
@@ -102,22 +102,22 @@ $lang['type_to_filter_customers'] = 'Filtrer les clients.';
 $lang['clear_fields_add_existing_customer_hint'] = 'Effacer tous les champs et entrer un nouveau client.';
 $lang['pick_existing_customer_hint'] = 'Rechercher un client existant.';
 $lang['new_appointment_title'] = 'Nouveau rendez-vous';
-$lang['edit_appointment_title'] = 'Editer rendez-vous';
+$lang['edit_appointment_title'] = 'Éditer rendez-vous';
 $lang['delete_appointment_title'] = 'Effacer rendez-vous';
 $lang['write_appointment_removal_reason'] = 'S\'il vous plaît, veuillez bien prendre quelques secondes pour nous expliquer les raisons de l\'annulation du rendez-vous.';
-$lang['appointment_saved'] = 'Rendez-vous sauvegardé avec succès .';
+$lang['appointment_saved'] = 'Rendez-vous sauvegardé avec succès.';
 $lang['new_unavailable_title'] = 'Nouvelle période d\'indisponibilité';
-$lang['edit_unavailable_title'] = 'Editer une période d\'indisponibilité';
-$lang['unavailable_saved'] = 'Période d\'indisponibilité sauvegardée avec succès .';
-$lang['start_date_before_end_error'] = 'La date de début est ultérieure à la date de fin .';
-$lang['invalid_duration'] = 'Invalid duration.';
-$lang['invalid_email'] = 'Adresse email non valide .';
+$lang['edit_unavailable_title'] = 'Éditer une période d\'indisponibilité';
+$lang['unavailable_saved'] = 'Période d\'indisponibilité sauvegardée avec succès.';
+$lang['start_date_before_end_error'] = 'La date de début est ultérieure à la date de fin.';
+$lang['invalid_duration'] = 'Durée invalide.';
+$lang['invalid_email'] = 'Adresse email non valide.';
 $lang['customers'] = 'Clients';
 $lang['details'] = 'Détails';
 $lang['no_records_found'] = 'Pas d\'enregistrement trouvé...';
 $lang['services'] = 'Prestations';
 $lang['duration_minutes'] = 'Durée (Minutes)';
-$lang['currency'] = 'Monnaie';
+$lang['currency'] = 'Devise';
 $lang['category'] = 'Catégorie';
 $lang['no_category'] = 'Pas de catégorie';
 $lang['description'] = 'Description';
@@ -126,25 +126,25 @@ $lang['admins'] = 'Administrateurs';
 $lang['providers'] = 'Exécutants';
 $lang['secretaries'] = 'Secrétaires';
 $lang['mobile_number'] = 'Téléphone portable';
-$lang['mobile'] = 'Mobile';
+$lang['mobile'] = 'Portable';
 $lang['state'] = 'État / Pays';
 $lang['username'] = 'Nom d\'utilisateur';
 $lang['password'] = 'Mot de passe';
 $lang['retype_password'] = 'Réinscription du mot de passe';
 $lang['receive_notifications'] = 'Recevoir les notifications';
-$lang['passwords_mismatch'] = 'Les 2 mots de passe ne correspondent pas .';
-$lang['admin_saved'] = 'Administrateur enregistré avec succès .';
-$lang['provider_saved'] = 'Exécutant enregistré avec succès .';
-$lang['secretary_saved'] = 'Secrétaire enregistrée avec succès .';
-$lang['admin_deleted'] = 'Administrateur supprimé avec succès .';
-$lang['provider_deleted'] = 'Exécutant supprimé avec succès .';
-$lang['secretary_deleted'] = 'Secrétaire supprimée avec succès .';
-$lang['service_saved'] = 'Prestation enregistrée avec succès .';
-$lang['service_category_saved'] = 'Catégorie de prestation enregistrée avec succès .';
-$lang['service_deleted'] = 'Prestation supprimée avec succès .';
-$lang['service_category_deleted'] = 'Catégorie de prestation supprimée avec succès .';
-$lang['customer_saved'] = 'Client enregistré avec succès .';
-$lang['customer_deleted'] = 'Client supprimé avec succès .';
+$lang['passwords_mismatch'] = 'Les 2 mots de passe ne correspondent pas.';
+$lang['admin_saved'] = 'Administrateur enregistré avec succès.';
+$lang['provider_saved'] = 'Exécutant enregistré avec succès.';
+$lang['secretary_saved'] = 'Secrétaire enregistré·e avec succès.';
+$lang['admin_deleted'] = 'Administrateur supprimé avec succès.';
+$lang['provider_deleted'] = 'Exécutant supprimé avec succès.';
+$lang['secretary_deleted'] = 'Secrétaire supprimé·e avec succès.';
+$lang['service_saved'] = 'Prestation enregistrée avec succès.';
+$lang['service_category_saved'] = 'Catégorie de prestation enregistrée avec succès.';
+$lang['service_deleted'] = 'Prestation supprimée avec succès.';
+$lang['service_category_deleted'] = 'Catégorie de prestation supprimée avec succès.';
+$lang['customer_saved'] = 'Client enregistré avec succès.';
+$lang['customer_deleted'] = 'Client supprimé avec succès.';
 $lang['current_view'] = 'Vue normale';
 $lang['working_plan'] = 'Planning de travail';
 $lang['reset_plan'] = 'Redémarrer le planning';
@@ -168,7 +168,7 @@ $lang['company_email_hint'] = 'Ceci sera l\'adresse email de la société. Elle
 $lang['company_link'] = 'Site web de la société';
 $lang['company_link_hint'] = 'Le lien de la société doit pointer vers le site web officiel de la société (obligatoire).';
 $lang['go_to_booking_page'] = 'Aller à la page de rendez-vous';
-$lang['settings_saved'] = 'Paramètres sauvegardés avec succès .';
+$lang['settings_saved'] = 'Paramètres sauvegardés avec succès.';
 $lang['general'] = 'Général';
 $lang['business_logic'] = 'Logique commerciale';
 $lang['current_user'] = 'Utilisateur actuel';
@@ -184,33 +184,33 @@ $lang['support'] = 'Support';
 $lang['about_app_support'] = 'Si vous rencontrez des problèmes pour installer ou configurer l\'application, allez chercher les réponses dans le groupe Google officiel. Vous pouvez également avoir besoin de créer une demande sur la page code de Google pour permettre l\'avancée du projet.';
 $lang['official_website'] = 'Site Web officiel';
 $lang['google_plus_community'] = 'Communauté Google+';
-$lang['support_group'] = 'Groupe de soutient';
+$lang['support_group'] = 'Groupe de soutien';
 $lang['project_issues'] = 'Questions sur le projet';
 $lang['license'] = 'Licence';
-$lang['about_app_license'] = 'Easy!Appointments est enregistré sous licence GPLv3. En utilisant le code d\'Easy!Appointments, quelqu\'en soit l\'usage, vous êtes tenu d\'accepter les termes décrits dans l\'URL suivante:';
+$lang['about_app_license'] = 'Easy!Appointments est enregistré sous licence GPLv3. En utilisant le code d\'Easy!Appointments, quelqu\'en soit l\'usage, vous êtes tenu d\'accepter les termes décrits dans l\'URL suivante :';
 $lang['logout_success'] = 'Vous avez bien été déconnecté ! Cliquez sur l\'un des boutons suivants pour naviguer dans les différentes pages';
 $lang['book_appointment_title'] = 'Carnet de rendez-vous';
 $lang['backend_section'] = 'Section back office';
 $lang['you_need_to_login'] = 'Bonjour ! Vous devez vous connecter pour voir les pages back office.';
-$lang['enter_username_here'] = 'Entrez votre nom d\'utilisateur ici ...';
-$lang['enter_password_here'] = 'Entrez votre mot de passe ici ...';
-$lang['login'] = 'Connexion ';
+$lang['enter_username_here'] = 'Entrez votre nom d\'utilisateur ici...';
+$lang['enter_password_here'] = 'Entrez votre mot de passe ici...';
+$lang['login'] = 'Connexion';
 $lang['forgot_your_password'] = 'Mot de passe oublié ?';
-$lang['login_failed'] = 'La connexion a échoué. S\'il vous plait entrez les informations d\'identification correctes et ré-essayez.';
+$lang['login_failed'] = 'La connexion a échoué. S\'il vous plaît entrez les informations d\'identification correctes et ré-essayez.';
 $lang['type_username_and_email_for_new_password'] = 'Inscrivez votre nom d\'utilisateur et adresse email pour recevoir un nouveau mot de passe.';
-$lang['enter_email_here'] = 'Entrez votre email ici ...';
+$lang['enter_email_here'] = 'Entrez votre email ici...';
 $lang['regenerate_password'] = 'Régénération du mot de passe';
 $lang['go_to_login'] = 'Retourner à la page de connexion';
 $lang['new_password_sent_with_email'] = 'Votre nouveau mot de passe vous a été envoyé par email.';
 $lang['new_account_password'] = 'Nouveau mot de passe du compte';
 $lang['new_password_is'] = 'Votre nouveau mot de passe est $password. Conservez cet email afin de pouvoir retrouver votre mot de passe si nécessaire. Vous pouvez aussi modifier ce mot de passe par un nouveau dans la page des paramètres.';
-$lang['delete_record_prompt'] = 'Êtes-vous sûr de vouloir supprimer cet enregistrement ? Cette action est irréversible .';
+$lang['delete_record_prompt'] = 'Êtes-vous sûr de vouloir supprimer cet enregistrement ? Cette action est irréversible.';
 $lang['delete_admin'] = 'Supprimer l\'administrateur';
 $lang['delete_customer'] = 'Supprimer le client';
 $lang['delete_service'] = 'Supprimer la prestation';
 $lang['delete_category'] = 'Supprimer la catégorie de prestation';
 $lang['delete_provider'] = 'Supprimer un exécutant';
-$lang['delete_secretary'] = 'Supprimer une secrétaire';
+$lang['delete_secretary'] = 'Supprimer un·e secrétaire';
 $lang['delete_appointment'] = 'Supprimer un rendez-vous';
 $lang['delete_unavailable'] = 'Supprimer une période d\'indisponibilité';
 $lang['delete'] = 'Supprimer';
@@ -220,16 +220,16 @@ $lang['close'] = 'Fermer';
 $lang['page_not_found'] = 'Page non trouvée';
 $lang['page_not_found_message'] = 'Malheureusement la page demandée n\'existe pas. Vérifiez l\'URL de votre navigateur ou naviguez vers une autre page en utilisant les boutons ci-dessous.';
 $lang['error'] = 'Erreur';
-$lang['no_privileges'] = 'Aucun privilèges';
-$lang['no_privileges_message'] = 'Vous n\'avez pas les privilèges nécessaires pour voir cette page. Veuillez s\'il vous plaît naviguez vers une section différente.';
+$lang['no_privileges'] = 'Aucun privilège';
+$lang['no_privileges_message'] = 'Vous n\'avez pas les privilèges nécessaires pour voir cette page. Veuillez s\'il vous plaît naviguer vers une section différente.';
 $lang['backend_calendar'] = 'Back office du calendrier';
-$lang['start_date_time'] = 'Date/Heure de Début';
-$lang['end_date_time'] = 'Date/Heure de Fin';
+$lang['start_date_time'] = 'Date/heure de début';
+$lang['end_date_time'] = 'Date/heure de fin';
 $lang['licensed_under'] = 'Licencié sous';
-$lang['unexpected_issues_occurred'] = 'Une erreur inattendue est survenue .';
+$lang['unexpected_issues_occurred'] = 'Une erreur inattendue est survenue.';
 $lang['service_communication_error'] = 'Erreur de communication avec le serveur, Veuillez s\'il vous plait réessayer.';
 $lang['no_privileges_edit_appointments'] = 'Vous n\'avez pas les privilèges nécessaires pour modifier les rendez-vous.';
-$lang['unavailable_updated'] = 'La période d\'indisponibilité a bien été actualisée .';
+$lang['unavailable_updated'] = 'La période d\'indisponibilité a bien été actualisée.';
 $lang['appointments'] = 'Rendez-vous';
 $lang['unexpected_warnings'] = 'Avertissements inattendus';
 $lang['unexpected_warnings_message'] = 'Opération terminée mais des avertissements sont survenus.';
@@ -258,18 +258,18 @@ $lang['december'] = 'Décembre';
 $lang['previous'] = 'Précédent';
 $lang['next'] = 'Suivant';
 $lang['now'] = 'Maintenant';
-$lang['select_time'] = 'Choisir l\'Heure';
+$lang['select_time'] = 'Choisir l\'heure';
 $lang['time'] = 'Heure du RDV';
 $lang['hour'] = 'Heure';
 $lang['minute'] = 'Minute';
-$lang['google_sync_completed'] = 'La synchronisation Google s\'est terminée avec succès .';
+$lang['google_sync_completed'] = 'La synchronisation Google s\'est terminée avec succès.';
 $lang['google_sync_failed'] = 'La synchronisation Google a échoué : Échec de connexion avec le serveur.';
 $lang['select_google_calendar'] = 'Choisir un calendrier Google';
 $lang['select_google_calendar_prompt'] = 'Sélectionnez le calendrier souhaité pour synchroniser votre rendez-vous. Si vous ne sélectionnez pas de calendrier spécifique, le calendrier par défaut sera sélectionné pour vous.';
-$lang['google_calendar_selected'] = 'Le calendrier Google a été sélectionné avec succès .';
-$lang['oops_something_went_wrong'] = 'Oups ! Une erreur s\'est produite .';
-$lang['could_not_add_to_google_calendar'] = 'Votre rendez-vous ne peux pas être ajouté à votre Calendrier Google.';
-$lang['ea_update_success'] = 'Easy!Appointments à été mis à jour avec succès .';
+$lang['google_calendar_selected'] = 'Le calendrier Google a été sélectionné avec succès.';
+$lang['oops_something_went_wrong'] = 'Oups ! Une erreur s\'est produite.';
+$lang['could_not_add_to_google_calendar'] = 'Votre rendez-vous ne peut pas être ajouté à votre calendrier Google.';
+$lang['ea_update_success'] = 'Easy!Appointments à été mis à jour avec succès.';
 $lang['require_captcha'] = 'CAPTCHA obligatoire';
 $lang['require_captcha_hint'] = 'Lorsque l\'option est activée, les clients doivent taper un code de vérification CAPTCHA avant de pouvoir réserver ou mettre à jour un rendez-vous.';
 $lang['captcha_is_wrong'] = 'Le code de vérification CAPTCHA est erroné, merci de réessayer.';
@@ -277,10 +277,10 @@ $lang['any_provider'] = 'Toute personne disponible';
 $lang['requested_hour_is_unavailable'] = 'Cette heure de rendez n\'est malheureusement pas disponible. Merci de sélectionner une autre heure pour votre rendez-vous.';
 $lang['customer_notifications'] = 'Notifications aux clients';
 $lang['customer_notifications_hint'] = 'Définit si les clients reçoivent des notifications par email chaque fois qu\'il y a un changement d\'horaire de l\'un de leurs rendez-vous.';
-$lang['date_format'] = 'Format des Dates';
+$lang['date_format'] = 'Format des dates';
 $lang['date_format_hint'] = 'Change le format d\'affichage des dates (D - Jour, M - Mois, Y - Année).';
-$lang['time_format'] = 'Format de l\'Heure';
-$lang['time_format_hint'] = 'Change le format d\'affichage de l\'Heure (H - Heures, M - Minutes).';
+$lang['time_format'] = 'Format de l\'heure';
+$lang['time_format_hint'] = 'Change le format d\'affichage de l\'heure (H - Heures, M - Minutes).';
 $lang['first_weekday'] = 'Premier jour de la semaine';
 $lang['first_weekday_hint'] = 'Définit le premier jour de la semaine calendaire.';
 $lang['google_analytics_code_hint'] = 'Renseigner l\'ID Google Analytics à utiliser dans la page des réservations.';
@@ -290,7 +290,7 @@ $lang['fixed'] = 'Fixe';
 $lang['attendants_number'] = 'Nombre de participants';
 $lang['reset_working_plan'] = 'Restaurer les valeurs d\'origine du planning de travail.';
 $lang['legal_contents'] = 'Contenu juridique';
-$lang['cookie_notice'] = 'Informations sur les Cookies';
+$lang['cookie_notice'] = 'Informations sur les cookies';
 $lang['display_cookie_notice'] = 'Afficher les informations sur les cookies';
 $lang['cookie_notice_content'] = 'Description de la politique d\'utilisation des cookies';
 $lang['terms_and_conditions'] = 'Conditions générales';
@@ -304,29 +304,29 @@ $lang['read_and_agree_to_terms_and_conditions'] = 'J\'ai lu, compris et accepte
 $lang['read_and_agree_to_privacy_policy'] = 'J\'ai lu, compris et accepte la {$link}politique de confidentialité{/$link}.';
 $lang['delete_personal_information_hint'] = 'Effacer toutes vos données personnelles du système.';
 $lang['delete_personal_information'] = 'Effacer toutes mes données personnelles';
-$lang['delete_personal_information_prompt'] = 'Etes-vous sûr(e) de vouloir effacer toutes vos données personnelles ? Cette action est irréversible.';
+$lang['delete_personal_information_prompt'] = 'Êtes-vous sûr·e de vouloir effacer toutes vos données personnelles ? Cette action est irréversible.';
 $lang['location'] = 'Location';
-$lang['working_plan_exception'] = 'Working Plan Exception';
-$lang['working_plan_exceptions'] = 'Working Plan Exceptions';
-$lang['working_plan_exceptions_hint'] = 'Add a working plan exception day, outside the working plan.';
-$lang['new_working_plan_exception_title'] = 'New Working Plan Exception';
-$lang['working_plan_exception_saved'] = 'Working plan exception saved successfully.';
-$lang['working_plan_exception_deleted'] = 'Working plan exception deleted successfully.';
-$lang['add_working_plan_exceptions_during_each_day'] = 'Add working plan exceptions, outside the working plan.';
-$lang['add_working_plan_exception'] = 'Add Working Plan Exception';
-$lang['require_phone_number'] = 'Require phone number';
-$lang['require_phone_number_hint'] = 'When enabled, customers and users will need to enter the customer\'s phone number when booking an appointment';
-$lang['check_spam_folder'] = 'Please check your spam folder if the email does not arrive within a few minutes.';
-$lang['api_token_hint'] = 'Set a secret token in order to enable the token based authentication of the Easy!Appointments API.';
-$lang['timezone'] = 'Timezone';
-$lang['overwrite_existing_working_plans'] = 'This will overwrite the existing provider working plans, are you sure that you want to continue?';
-$lang['working_plans_got_updated'] = 'All the working plans got updated.';
-$lang['apply_to_all_providers'] = 'Apply To All Providers';
-$lang['display_any_provider'] = 'Display Any Provider Option';
-$lang['display_any_provider_hint'] = 'The booking page will get an additional option that allows customers to book without specifying a provider.';
-$lang['load_more'] = 'Load More';
-$lang['list'] = 'List';
-$lang['default'] = 'Default';
-$lang['table'] = 'Table';
+$lang['working_plan_exception'] = 'Exception au planning';
+$lang['working_plan_exceptions'] = 'Exceptions au planning';
+$lang['working_plan_exceptions_hint'] = 'Ajouter un jour d\'exception au planning, en dehors du planning.';
+$lang['new_working_plan_exception_title'] = 'Nouvelle exception au planning';
+$lang['working_plan_exception_saved'] = 'Exception au planning enregistrée avec succès.';
+$lang['working_plan_exception_deleted'] = 'Exception au planning supprimée avec succès.';
+$lang['add_working_plan_exceptions_during_each_day'] = 'Ajouter des exceptions au planning, en dehors du planning.';
+$lang['add_working_plan_exception'] = 'Ajouter une exception au planning';
+$lang['require_phone_number'] = 'Exiger un numéro de téléphone';
+$lang['require_phone_number_hint'] = 'Lorsque activé, les clients et les utilisateurs devront entrer le numéro de téléphone du client lors de la prise de rendez-vous.';
+$lang['check_spam_folder'] = 'Veuillez vérifier votre dossier de courrier indésirable si l\'email n\'arrive pas dans les minutes qui suivent.';
+$lang['api_token_hint'] = 'Définissez un jeton secret afin d\'activer l\'authentification basée sur le jeton de l\'API Easy!Appointments. ';
+$lang['timezone'] = 'Fuseau horaire';
+$lang['overwrite_existing_working_plans'] = 'Cela écrasera les plannings existants du fournisseur. Êtes-vous sûr de vouloir continuer ?';
+$lang['working_plans_got_updated'] = 'Tous les plannings ont été mis à jour.';
+$lang['apply_to_all_providers'] = 'Appliquer à tous les fournisseurs';
+$lang['display_any_provider'] = 'Afficher toutes les options de fournisseurs';
+$lang['display_any_provider_hint'] = 'La page de réservation obtiendra une option supplémentaire qui permet aux clients de réserver sans spécifier de fournisseur.';
+$lang['load_more'] = 'Charger plus';
+$lang['list'] = 'Liste';
+$lang['default'] = 'Défaut';
+$lang['table'] = 'Tableau';
 $lang['date'] = 'Date';
 // End