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/** * Plugin Name: WordPress Virtual Filesystem * Plugin URI: https://curotec.com * Description: A WordPress plugin that implements a plugin-specific virtual filesystem layer, storing files in MySQL database instead of the physical filesystem. * Version: 1.0.0 * Author: Matthew Summers * Author URI: https://curotec.com * Author Email: matt.summers@curotec.com * Company: Curotec * License: GPL v2 or later * License URI: http://www.gnu.org/licenses/gpl-2.0.txt * Text Domain: wp-virtual-filesystem * Domain Path: /languages * * @package WPVirtualFilesystem */ if (!defined('ABSPATH')) { exit; // Exit if accessed directly } // Plugin version define('WPVFS_VERSION', '1.0.0'); // Plugin root path define('WPVFS_PLUGIN_PATH', plugin_dir_path(__FILE__)); // Plugin root URL define('WPVFS_PLUGIN_URL', plugin_dir_url(__FILE__)); // Autoloader for plugin classes spl_autoload_register(function ($class) { $prefix = 'WPVirtualFilesystem\\'; $base_dir = WPVFS_PLUGIN_PATH . 'includes/'; $len = strlen($prefix); if (strncmp($prefix, $class, $len) !== 0) { return; } $relative_class = substr($class, $len); $file = $base_dir . str_replace('\\', '/', $relative_class) . '.php'; if (file_exists($file)) { require $file; } }); // Main plugin class class WP_Virtual_Filesystem { private static $instance = null; private $stream_wrapper; private $admin; private $db; private $plugin_settings; public static function get_instance() { if (null === self::$instance) { self::$instance = new self(); } return self::$instance; } private function __construct() { $this->init(); $this->plugin_settings = get_option('wpvfs_options', [])['plugin_settings'] ?? []; } private function init() { // Initialize components on plugins_loaded to ensure WordPress is fully loaded add_action('plugins_loaded', [$this, 'load_components']); // Register activation and deactivation hooks register_activation_hook(__FILE__, [$this, 'activate']); register_deactivation_hook(__FILE__, [$this, 'deactivate']); } public function load_components() { // Load required files require_once WPVFS_PLUGIN_PATH . 'includes/class-database.php'; require_once WPVFS_PLUGIN_PATH . 'includes/class-stream-wrapper.php'; require_once WPVFS_PLUGIN_PATH . 'includes/class-admin.php'; // Initialize components $this->db = new WPVirtualFilesystem\Database(); $this->stream_wrapper = new WPVirtualFilesystem\Stream_Wrapper(); $this->admin = new WPVirtualFilesystem\Admin(); // Register the stream wrapper stream_wrapper_register('wpvfs', WPVirtualFilesystem\Stream_Wrapper::class); // Only add SCORM hooks if GrassBlade plugin has VFS and SCORM enabled if ($this->is_plugin_vfs_enabled('grassblade')) { // Add basic VFS hooks for the plugin add_filter('plugins_url', [$this, 'modify_plugin_urls'], 10, 3); add_filter('wp_get_attachment_url', [$this, 'modify_attachment_url'], 10, 2); // Add SCORM-specific hooks only if SCORM is enabled for this plugin if ($this->is_plugin_scorm_enabled('grassblade')) { add_filter('grassblade_process_upload', [$this, 'intercept_scorm_upload'], 10, 3); add_filter('grassblade_content_url', [$this, 'modify_scorm_content_url'], 10, 2); add_filter('gb_file_exists', [$this, 'check_scorm_file_exists'], 10, 1); } } } private function is_plugin_vfs_enabled($plugin_slug) { return !empty($this->plugin_settings[$plugin_slug]['vfs_enabled']); } private function is_plugin_scorm_enabled($plugin_slug) { return !empty($this->plugin_settings[$plugin_slug]['vfs_enabled']) && !empty($this->plugin_settings[$plugin_slug]['scorm_enabled']); } public function modify_plugin_urls($url, $path, $plugin) { $plugin_slug = dirname($plugin); if (empty($plugin_slug)) { $plugin_slug = basename($plugin, '.php'); } if ($this->is_plugin_vfs_enabled($plugin_slug)) { if (strpos($path, 'uploads/' . $plugin_slug) !== false) { return str_replace('wp-content/uploads/' . $plugin_slug, 'wpvfs://' . $plugin_slug, $url); } } return $url; } public function modify_attachment_url($url, $attachment_id) { foreach ($this->plugin_settings as $plugin_slug => $settings) { if ($this->is_plugin_vfs_enabled($plugin_slug)) { if (strpos($url, 'uploads/' . $plugin_slug) !== false) { return str_replace('wp-content/uploads/' . $plugin_slug, 'wpvfs://' . $plugin_slug, $url); } } } return $url; } public function intercept_scorm_upload($params, $post, $upload) { // Only intercept if SCORM handling is enabled for this plugin if (!$this->is_plugin_scorm_enabled('grassblade')) { return $params; } if (!empty($params['process_status']) || empty($upload['content_path'])) { return $params; } $content_path = $upload['content_path']; $content_url = $upload['content_url']; // Check if this is a SCORM package if (!file_exists($content_path . DIRECTORY_SEPARATOR . 'imsmanifest.xml')) { return $params; } // Store all files in the virtual filesystem $this->store_directory_in_vfs('grassblade', $content_path, $content_url); // Modify the content URL to use our virtual filesystem $upload['content_url'] = str_replace('wp-content/uploads/', 'wpvfs://', $content_url); $params['content_url'] = $upload['content_url']; return $params; } public function modify_scorm_content_url($url, $content_id) { if (strpos($url, 'wp-content/uploads/grassblade/') !== false) { return str_replace('wp-content/uploads/grassblade/', 'wpvfs://grassblade/', $url); } return $url; } public function check_scorm_file_exists($file) { if (strpos($file, 'wpvfs://') === 0) { $path = str_replace('wpvfs://', '', $file); list($plugin_slug, $virtual_path) = explode('/', $path, 2); return $this->db->file_exists($plugin_slug, $virtual_path); } return $file; } public function activate() { // Create database tables $this->get_db()->create_tables(); // Set default options $default_options = [ 'enabled' => true, 'intercepted_plugins' => [], 'cache_enabled' => true, 'cache_ttl' => 3600, 'plugin_settings' => [ 'grassblade' => [ 'vfs_enabled' => true, 'scorm_enabled' => true, ], ], ]; add_option('wpvfs_options', $default_options); // Flush rewrite rules flush_rewrite_rules(); } public function deactivate() { // Unregister stream wrapper stream_wrapper_unregister('wpvfs'); // Flush rewrite rules flush_rewrite_rules(); } public function get_db() { return $this->db; } public function get_stream_wrapper() { return $this->stream_wrapper; } public function get_admin() { return $this->admin; } private function store_directory_in_vfs($plugin_slug, $dir_path, $base_url) { $files = new \RecursiveIteratorIterator( new \RecursiveDirectoryIterator($dir_path, \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::SELF_FIRST ); foreach ($files as $file) { if ($file->isFile()) { $relative_path = str_replace($dir_path, '', $file->getPathname()); $virtual_path = str_replace('\\', '/', $relative_path); $file_contents = file_get_contents($file->getPathname()); $this->db->store_file( $plugin_slug, $virtual_path, $file_contents, mime_content_type($file->getPathname()) ); } } } } // Initialize the plugin function wpvfs() { return WP_Virtual_Filesystem::get_instance(); } // Start the plugin wpvfs(); GTT Resources | News | Videos | Guides | Whitepapers | GTT

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