274 lines
9 KiB
PHP
274 lines
9 KiB
PHP
<?php // Place this file in the root E!A directory and open it with the browser or execute in terminal.
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/* ----------------------------------------------------------------------------
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* Easy!Appointments - Patch Utility Script
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*
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* @package EasyAppointmentsPatch
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* @version 1.0.0
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* @author A.Tselegidis <info@alextselegidis.com>
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* @copyright Copyright (c) 2013 - 2022, Alex Tselegidis
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* @license https://opensource.org/licenses/GPL-3.0 - GPLv3
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* @link https://easyappointments.org
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* @support Easy!Appointments v1.x.x
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* ---------------------------------------------------------------------------- */
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// Config
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define('FILES_JSON_URL', 'https://cdn.easyappointments.org/patch/files.json');
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// Setup
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error_reporting(E_ALL);
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ini_set('display_errors', TRUE);
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define('LINE_BREAK', php_sapi_name() === 'cli' ? "\n" : '<br>');
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// Functions
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function detect_local_version()
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{
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$config_file_path = __DIR__ . '/application/config/config.php';
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if ( ! file_exists($config_file_path))
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{
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die('Failed to detect the local Easy!Appointments version, please move the patch.php script in the root directory of your Easy!Appointments installation.');
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}
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$contents = file_get_contents($config_file_path);
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if ($contents === FALSE)
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{
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die('Could not read the local configuration file, please check the file permissions make sure it is readable: ' . $config_file_path);
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}
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preg_match("/config\['version'].*=.*'(.*)';/", $contents, $matches);
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if (empty($matches) || empty($matches[1]))
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{
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die('Could not parse the version of your installation from "' . $config_file_path . '". Please make sure this file is in its original form.');
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}
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return $matches[1];
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}
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function get_applied_patches()
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{
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$patch_json_file_path = __DIR__ . '/patch.json';
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if ( ! file_exists($patch_json_file_path))
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{
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return [];
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}
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$applied_patches_contents = file_get_contents($patch_json_file_path);
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if ($applied_patches_contents === FALSE)
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{
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die('Could not read the local "patch.json" file, please check the file permissions make sure it is readable: ' . $patch_json_file_path);
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}
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return json_decode($applied_patches_contents, TRUE) ?: [];
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}
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function get_pending_patches($local_version, $applied_patches)
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{
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$files_json_contents = file_get_contents(FILES_JSON_URL);
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if ($files_json_contents === FALSE)
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{
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die('Could not read the remote "files.json", make sure the "allow_url_fopen" configuration is "On" inside your "php.ini" file:' . php_ini_loaded_file());
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}
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$all_patches = json_decode($files_json_contents, TRUE);
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if (empty($all_patches))
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{
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die('Could not fetch remote patch information, please try again later.');
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}
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$version_patches = array_filter($all_patches, function ($single_patch_file) use ($local_version) {
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return in_array($local_version, $single_patch_file['versions'], FALSE);
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});
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$pending_patches = array_filter($version_patches, function ($single_patch_file) use ($applied_patches) {
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$version_patch_filename = basename($single_patch_file['url']);
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foreach ($applied_patches as $applied_patch)
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{
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if (basename($applied_patch['url']) === $version_patch_filename)
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{
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return FALSE;
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}
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}
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return TRUE;
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});
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if (empty($pending_patches))
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{
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die('There are no new patches to apply, you may check again later.');
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}
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return $pending_patches;
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}
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function apply_pending_patches($local_version, $pending_patches)
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{
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$new_patches = [];
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foreach ($pending_patches as $pending_patch)
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{
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$patch_contents = file_get_contents($pending_patch['url']);
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if ($patch_contents === FALSE)
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{
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die('Could not read the remote "' . basename($pending_patch['url']) . '", make sure the "allow_url_fopen" configuration is "On" inside your "php.ini" file.');
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}
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if (empty($patch_contents))
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{
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die('No contents received while fetching: ' . $pending_patch['url']);
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}
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preg_match('/Index: (.*)/', $patch_contents, $file_path_match);
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preg_match('/@@ (.*) (.*) @@/', $patch_contents, $position_match);
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$patch_body = substr($patch_contents, strpos($patch_contents, '@@'));
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$patch_body_lines = explode("\n", $patch_body);
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array_shift($patch_body_lines); // Remove the first @@ line of the patch body.
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$original_code_lines = [];
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foreach ($patch_body_lines as $patch_line)
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{
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if ( ! empty($patch_line[0]) && $patch_line[0] !== '+')
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{
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$original_code_lines[] = substr($patch_line, 1);
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}
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}
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$trimmed_original_code_lines = array_map('trim', $original_code_lines);
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$modified_code_lines = [];
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foreach ($patch_body_lines as $patch_line)
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{
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if ( ! empty($patch_line[0]) && $patch_line[0] !== '-')
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{
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$modified_code_lines[] = substr($patch_line, 1);
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}
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}
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$trimmed_modified_code_lines = array_map('trim', $modified_code_lines);
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$file_code_contents = file_get_contents($file_path_match[1]);
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if ($file_code_contents === FALSE)
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{
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die('Could not read the local source code file, please check the file permissions make sure it is readable: ' . $file_path_match[1]);
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}
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$file_code_lines = explode("\n", $file_code_contents);
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$affected_position = explode(',', $position_match[1]);
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$affected_code_lines = array_slice($file_code_lines, abs($affected_position[0]) - 1, $affected_position[1]);
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$trimmed_affected_code_lines = array_map('trim', $affected_code_lines);
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if ($trimmed_affected_code_lines === $trimmed_original_code_lines)
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{
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$pre_change_code_lines = array_slice($file_code_lines, 0, abs($affected_position[0]) - 1);
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$post_change_code_lines = array_slice($file_code_lines, abs($affected_position[0]) + $affected_position[1] - 1);
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$replaced_file_code_lines = array_merge($pre_change_code_lines, $modified_code_lines, $post_change_code_lines);
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$patched_file_contents = implode("\n", $replaced_file_code_lines);
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$result = file_put_contents($file_path_match[1], $patched_file_contents);
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if ($result === FALSE)
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{
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die('Could not write the local source code file, please check the file permissions make sure it is writable: ' . $file_path_match[1]);
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}
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}
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$success = TRUE;
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$message = '';
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if ($trimmed_affected_code_lines !== $trimmed_original_code_lines && array_intersect($trimmed_affected_code_lines, $trimmed_modified_code_lines) !== $trimmed_affected_code_lines)
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{
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$success = FALSE;
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$message = 'IMPORTANT: The patch "' . basename($pending_patch['url']) . '" cannot be applied, because your local codebase is customized. Download and apply it manually: ' . $pending_patch['url'];
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echo LINE_BREAK . LINE_BREAK . $message . LINE_BREAK;
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}
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$new_patches[] = [
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'applied_at' => date('Y-m-d H:i:s'),
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'local_version' => $local_version,
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'url' => $pending_patch['url'],
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'success' => $success,
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'message' => $message
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];
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}
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return $new_patches;
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}
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function update_patches_json($applied_patches, $new_patches)
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{
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$persisted_patches = array_merge($applied_patches, $new_patches);
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$patch_json_file_path = __DIR__ . '/patch.json';
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$result = file_put_contents($patch_json_file_path, json_encode($persisted_patches, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT));
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if ($result === FALSE)
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{
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die('Could not write the local "patch.json" file, please check the file permissions make sure it is writable: ' . $patch_json_file_path);
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}
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}
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function get_new_patch_filenames($new_patches)
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{
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$successful_new_patches = array_filter($new_patches, function ($new_patch) {
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return $new_patch['success'];
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});
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$patch_filenames = array_map(function ($successful_new_patch) {
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return basename($successful_new_patch['url']);
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}, $successful_new_patches);
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return implode(LINE_BREAK . LINE_BREAK . '○ ', $patch_filenames);
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}
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// Run
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echo LINE_BREAK . '➜ Easy!Appointments - Patch Utility Script' . LINE_BREAK . LINE_BREAK;
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$local_version = detect_local_version();
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$applied_patches = get_applied_patches();
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$pending_patches = get_pending_patches($local_version, $applied_patches);
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$new_patches = apply_pending_patches($local_version, $pending_patches);
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if (empty($new_patches))
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{
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echo LINE_BREAK . '➜ No patches were applied, please check the PHP error logs for more information at: ' . ini_get('error_log') . LINE_BREAK;
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}
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else
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{
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echo LINE_BREAK . 'The following patches were successfully applied: ' . LINE_BREAK . LINE_BREAK . '○ ' . get_new_patch_filenames($new_patches) . LINE_BREAK;
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update_patches_json($applied_patches, $new_patches);
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}
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