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<?php /** * WPSEO plugin file. * * @package WPSEO\Admin * @since 1.7.0 */ /** * Base class for handling plugin conflicts. */ class Yoast_Plugin_Conflict { /** * The plugins must be grouped per section. * * It's possible to check for each section if there are conflicting plugins. * * @var array */ protected $plugins = []; /** * All the current active plugins will be stored in this private var. * * @var array */ protected $all_active_plugins = []; /** * After searching for active plugins that are in $this->plugins the active plugins will be stored in this * property. * * @var array */ protected $active_conflicting_plugins = []; /** * Property for holding instance of itself. * * @var Yoast_Plugin_Conflict */ protected static $instance; /** * For the use of singleton pattern. Create instance of itself and return this instance. * * @param string $class_name Give the classname to initialize. If classname is * false (empty) it will use it's own __CLASS__. * * @return Yoast_Plugin_Conflict */ public static function get_instance( $class_name = '' ) { if ( is_null( self::$instance ) ) { if ( ! is_string( $class_name ) || $class_name === '' ) { $class_name = self::class; } self::$instance = new $class_name(); } return self::$instance; } /** * Setting instance, all active plugins and search for active plugins. * * Protected constructor to prevent creating a new instance of the * *Singleton* via the `new` operator from outside this class. */ protected function __construct() { // Set active plugins. $this->all_active_plugins = get_option( 'active_plugins' ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reason: We are not processing form information. if ( isset( $_GET['action'] ) && is_string( $_GET['action'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended,WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Reason: We are not processing form information and only comparing the variable in a condition. $action = wp_unslash( $_GET['action'] ); if ( $action === 'deactivate' ) { $this->remove_deactivated_plugin(); } } // Search for active plugins. $this->search_active_plugins(); } /** * Check if there are conflicting plugins for given $plugin_section. * * @param string $plugin_section Type of plugin conflict (such as Open Graph or sitemap). * * @return bool */ public function check_for_conflicts( $plugin_section ) { static $sections_checked; // Return early if there are no active conflicting plugins at all. if ( empty( $this->active_conflicting_plugins ) ) { return false; } if ( $sections_checked === null ) { $sections_checked = []; } if ( ! in_array( $plugin_section, $sections_checked, true ) ) { $sections_checked[] = $plugin_section; return ( ! empty( $this->active_conflicting_plugins[ $plugin_section ] ) ); } return false; } /** * Checks for given $plugin_sections for conflicts. * * @param array $plugin_sections Set of sections. * * @return void */ public function check_plugin_conflicts( $plugin_sections ) { foreach ( $plugin_sections as $plugin_section => $readable_plugin_section ) { // Check for conflicting plugins and show error if there are conflicts. if ( $this->check_for_conflicts( $plugin_section ) ) { $this->set_error( $plugin_section, $readable_plugin_section ); } } // List of all active sections. $sections = array_keys( $plugin_sections ); // List of all sections. $all_plugin_sections = array_keys( $this->plugins ); /* * Get all sections that are inactive. * These plugins need to be cleared. * * This happens when Sitemaps or OpenGraph implementations toggle active/disabled. */ $inactive_sections = array_diff( $all_plugin_sections, $sections ); if ( ! empty( $inactive_sections ) ) { foreach ( $inactive_sections as $section ) { array_walk( $this->plugins[ $section ], [ $this, 'clear_error' ] ); } } // For active sections clear errors for inactive plugins. foreach ( $sections as $section ) { // By default, clear errors for all plugins of the section. $inactive_plugins = $this->plugins[ $section ]; // If there are active plugins, filter them from being cleared. if ( isset( $this->active_conflicting_plugins[ $section ] ) ) { $inactive_plugins = array_diff( $this->plugins[ $section ], $this->active_conflicting_plugins[ $section ] ); } array_walk( $inactive_plugins, [ $this, 'clear_error' ] ); } } /** * Setting an error on the screen. * * @param string $plugin_section Type of conflict group (such as Open Graph or sitemap). * @param string $readable_plugin_section This is the value for the translation. * * @return void */ protected function set_error( $plugin_section, $readable_plugin_section ) { $notification_center = Yoast_Notification_Center::get(); foreach ( $this->active_conflicting_plugins[ $plugin_section ] as $plugin_file ) { $plugin_name = $this->get_plugin_name( $plugin_file ); $error_message = ''; /* translators: %1$s: 'Facebook & Open Graph' plugin name(s) of possibly conflicting plugin(s), %2$s to Yoast SEO */ $error_message .= '<p>' . sprintf( __( 'The %1$s plugin might cause issues when used in conjunction with %2$s.', 'wordpress-seo' ), '<em>' . $plugin_name . '</em>', 'Yoast SEO' ) . '</p>'; $error_message .= '<p>' . sprintf( $readable_plugin_section, 'Yoast SEO', $plugin_name ) . '</p>'; /* translators: %s: 'Facebook' plugin name of possibly conflicting plugin */ $error_message .= '<a class="button button-primary" href="' . wp_nonce_url( 'plugins.php?action=deactivate&plugin=' . $plugin_file . '&plugin_status=all', 'deactivate-plugin_' . $plugin_file ) . '">' . sprintf( __( 'Deactivate %s', 'wordpress-seo' ), $this->get_plugin_name( $plugin_file ) ) . '</a> '; $identifier = $this->get_notification_identifier( $plugin_file ); // Add the message to the notifications center. $notification_center->add_notification( new Yoast_Notification( $error_message, [ 'type' => Yoast_Notification::ERROR, 'id' => 'wpseo-conflict-' . $identifier, ] ) ); } } /** * Clear the notification for a plugin. * * @param string $plugin_file Clear the optional notification for this plugin. * * @return void */ public function clear_error( $plugin_file ) { $identifier = $this->get_notification_identifier( $plugin_file ); $notification_center = Yoast_Notification_Center::get(); $notification_center->remove_notification_by_id( 'wpseo-conflict-' . $identifier ); } /** * Loop through the $this->plugins to check if one of the plugins is active. * * This method will store the active plugins in $this->active_plugins. * * @return void */ protected function search_active_plugins() { foreach ( $this->plugins as $plugin_section => $plugins ) { $this->check_plugins_active( $plugins, $plugin_section ); } } /** * Loop through plugins and check if each plugin is active. * * @param array $plugins Set of plugins. * @param string $plugin_section Type of conflict group (such as Open Graph or sitemap). * * @return void */ protected function check_plugins_active( $plugins, $plugin_section ) { foreach ( $plugins as $plugin ) { if ( $this->check_plugin_is_active( $plugin ) ) { $this->add_active_plugin( $plugin_section, $plugin ); } } } /** * Check if given plugin exists in array with all_active_plugins. * * @param string $plugin Plugin basename string. * * @return bool */ protected function check_plugin_is_active( $plugin ) { return in_array( $plugin, $this->all_active_plugins, true ); } /** * Add plugin to the list of active plugins. * * This method will check first if key $plugin_section exists, if not it will create an empty array * If $plugin itself doesn't exist it will be added. * * @param string $plugin_section Type of conflict group (such as Open Graph or sitemap). * @param string $plugin Plugin basename string. * * @return void */ protected function add_active_plugin( $plugin_section, $plugin ) { if ( ! array_key_exists( $plugin_section, $this->active_conflicting_plugins ) ) { $this->active_conflicting_plugins[ $plugin_section ] = []; } if ( ! in_array( $plugin, $this->active_conflicting_plugins[ $plugin_section ], true ) ) { $this->active_conflicting_plugins[ $plugin_section ][] = $plugin; } } /** * Search in $this->plugins for the given $plugin. * * If there is a result it will return the plugin category. * * @param string $plugin Plugin basename string. * * @return int|string */ protected function find_plugin_category( $plugin ) { foreach ( $this->plugins as $plugin_section => $plugins ) { if ( in_array( $plugin, $plugins, true ) ) { return $plugin_section; } } } /** * Get plugin name from file. * * @param string $plugin Plugin path relative to plugins directory. * * @return string|bool Plugin name or false when no name is set. */ protected function get_plugin_name( $plugin ) { $plugin_details = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin ); if ( $plugin_details['Name'] !== '' ) { return $plugin_details['Name']; } return false; } /** * When being in the deactivation process the currently deactivated plugin has to be removed. * * @return void */ private function remove_deactivated_plugin() { // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reason: On the deactivation screen the nonce is already checked by WordPress itself. if ( ! isset( $_GET['plugin'] ) || ! is_string( $_GET['plugin'] ) ) { return; } // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reason: On the deactivation screen the nonce is already checked by WordPress itself. $deactivated_plugin = sanitize_text_field( wp_unslash( $_GET['plugin'] ) ); $key_to_remove = array_search( $deactivated_plugin, $this->all_active_plugins, true ); if ( $key_to_remove !== false ) { unset( $this->all_active_plugins[ $key_to_remove ] ); } } /** * Get the identifier from the plugin file. * * @param string $plugin_file Plugin file to get Identifier from. * * @return string */ private function get_notification_identifier( $plugin_file ) { return md5( $plugin_file ); } }
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