easyappointments/application/models/User_model.php

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<?php defined('BASEPATH') or exit('No direct script access allowed');
/* ----------------------------------------------------------------------------
* 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 v1.0.0
* ---------------------------------------------------------------------------- */
/**
* User Model
*
* Contains current user's methods.
*
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* @property CI_DB_query_builder $db
* @property CI_Loader $load
*
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* @package Models
*/
class User_Model extends CI_Model {
/**
* Returns the user from the database for the "settings" page.
*
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* @param int $user_id User record id.
*
* @return array Returns an array with user data.
*/
public function get_user($user_id)
{
$user = $this->db->get_where('users', ['id' => $user_id])->row_array();
$user['settings'] = $this->db->get_where('user_settings', ['id_users' => $user_id])->row_array();
unset($user['settings']['id_users']);
return $user;
}
/**
* This method saves the user record into the database (used in backend settings page).
*
* @param array $user Contains the current users data.
*
* @return bool Returns the operation result.
*/
public function save_user($user)
{
$user_settings = $user['settings'];
$user_settings['id_users'] = $user['id'];
unset($user['settings']);
// Prepare user password (hash).
if (isset($user_settings['password']))
{
$this->load->helper('general');
$salt = $this->db->get_where('user_settings', ['id_users' => $user['id']])->row()->salt;
$user_settings['password'] = hash_password($salt, $user_settings['password']);
}
if ( ! $this->db->update('users', $user, ['id' => $user['id']]))
{
return FALSE;
}
if ( ! $this->db->update('user_settings', $user_settings, ['id_users' => $user['id']]))
{
return FALSE;
}
return TRUE;
}
/**
* Performs the check of the given user credentials.
*
* @param string $username Given user's name.
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* @param string $password Given user's password (not hashed yet).
*
* @return array|null Returns the session data of the logged in user or null on failure.
*/
public function check_login($username, $password)
{
$this->load->helper('general');
$salt = $this->get_salt($username);
$password = hash_password($salt, $password);
$user_settings = $this->db->get_where('user_settings', [
'username' => $username,
'password' => $password
])->row_array();
if (empty($user_settings))
{
return NULL;
}
$user = $this->db->get_where('users', ['id' => $user_settings['id_users']])->row_array();
if (empty($user))
{
return NULL;
}
$role = $this->db->get_where('roles', ['id' => $user['id_roles']])->row_array();
if (empty($role))
{
return NULL;
}
$this->load->library('timezones');
$default_timezone = $this->timezones->get_default_timezone();
return [
'user_id' => $user['id'],
'user_email' => $user['email'],
'username' => $username,
'timezone' => isset($user['timezone']) ? $user['timezone'] : $default_timezone,
'role_slug' => $role['slug'],
];
}
/**
* Retrieve user's salt from database.
*
* @param string $username This will be used to find the user record.
*
* @return string Returns the salt db value.
*/
public function get_salt($username)
{
$user = $this->db->get_where('user_settings', ['username' => $username])->row_array();
return ($user) ? $user['salt'] : '';
}
/**
* Get the given user's display name (first + last name).
*
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* @param int $user_id The given user record id.
*
* @return string Returns the user display name.
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*
* @throws Exception If $user_id argument is invalid.
*/
public function get_user_display_name($user_id)
{
if ( ! is_numeric($user_id))
{
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throw new Exception ('Invalid argument given: ' . $user_id);
}
$user = $this->db->get_where('users', ['id' => $user_id])->row_array();
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return $user['first_name'] . ' ' . $user['last_name'];
}
/**
* If the given arguments correspond to an existing user record, generate a new
* password and send it with an email.
*
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* @param string $username User's username.
* @param string $email User's email.
*
* @return string|bool Returns the new password on success or FALSE on failure.
*/
public function regenerate_password($username, $email)
{
$this->load->helper('general');
$result = $this->db
->select('users.id')
->from('users')
->join('user_settings', 'user_settings.id_users = users.id', 'inner')
->where('users.email', $email)
->where('user_settings.username', $username)
->get();
if ($result->num_rows() == 0)
{
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return FALSE;
}
$user_id = $result->row()->id;
// Create a new password and send it with an email to the given email address.
$new_password = generate_random_string();
$salt = $this->db->get_where('user_settings', ['id_users' => $user_id])->row()->salt;
$hash_password = hash_password($salt, $new_password);
$this->db->update('user_settings', ['password' => $hash_password], ['id_users' => $user_id]);
return $new_password;
}
/**
* Get the timezone of a user.
*
* @param int $id Database ID of the user.
*
* @return string|null
*/
public function get_user_timezone($id)
{
$row = $this->db->get_where('users', ['id' => $id])->row_array();
return $row ? $row['timezone'] : NULL;
}
}