/wp-content/plugins/wordpress-seo/wp-seo-main.php
PHP | 480 lines | 257 code | 87 blank | 136 comment | 57 complexity | 5b5f569e9a948cfbc3b50e3cf47c2cc8 MD5 | raw file
- <?php
- /**
- * @package WPSEO\Main
- */
- if ( ! function_exists( 'add_filter' ) ) {
- header( 'Status: 403 Forbidden' );
- header( 'HTTP/1.1 403 Forbidden' );
- exit();
- }
- /**
- * @internal Nobody should be able to overrule the real version number as this can cause serious issues
- * with the options, so no if ( ! defined() )
- */
- define( 'WPSEO_VERSION', '3.3.4' );
- if ( ! defined( 'WPSEO_PATH' ) ) {
- define( 'WPSEO_PATH', plugin_dir_path( WPSEO_FILE ) );
- }
- if ( ! defined( 'WPSEO_BASENAME' ) ) {
- define( 'WPSEO_BASENAME', plugin_basename( WPSEO_FILE ) );
- }
- /* ***************************** CLASS AUTOLOADING *************************** */
- /**
- * Auto load our class files
- *
- * @param string $class Class name.
- *
- * @return void
- */
- function wpseo_auto_load( $class ) {
- static $classes = null;
- if ( $classes === null ) {
- $classes = array(
- 'wp_list_table' => ABSPATH . 'wp-admin/includes/class-wp-list-table.php',
- 'walker_category' => ABSPATH . 'wp-includes/category-template.php',
- 'pclzip' => ABSPATH . 'wp-admin/includes/class-pclzip.php',
- );
- }
- $cn = strtolower( $class );
- if ( ! class_exists( $class ) && isset( $classes[ $cn ] ) ) {
- require_once( $classes[ $cn ] );
- }
- }
- if ( file_exists( WPSEO_PATH . '/vendor/autoload_52.php' ) ) {
- require WPSEO_PATH . '/vendor/autoload_52.php';
- }
- elseif ( ! class_exists( 'WPSEO_Options' ) ) { // Still checking since might be site-level autoload R.
- add_action( 'admin_init', 'yoast_wpseo_missing_autoload', 1 );
- return;
- }
- if ( function_exists( 'spl_autoload_register' ) ) {
- spl_autoload_register( 'wpseo_auto_load' );
- }
- /* ********************* DEFINES DEPENDING ON AUTOLOADED CODE ********************* */
- /**
- * Defaults to production, for safety
- */
- if ( ! defined( 'YOAST_ENVIRONMENT' ) ) {
- define( 'YOAST_ENVIRONMENT', 'production' );
- }
- /**
- * Only use minified assets when we are in a production environment
- */
- if ( ! defined( 'WPSEO_CSSJS_SUFFIX' ) ) {
- define( 'WPSEO_CSSJS_SUFFIX', ( 'development' !== YOAST_ENVIRONMENT ) ? '.min' : '' );
- }
- /* ***************************** PLUGIN (DE-)ACTIVATION *************************** */
- /**
- * Run single site / network-wide activation of the plugin.
- *
- * @param bool $networkwide Whether the plugin is being activated network-wide.
- */
- function wpseo_activate( $networkwide = false ) {
- if ( ! is_multisite() || ! $networkwide ) {
- _wpseo_activate();
- }
- else {
- /* Multi-site network activation - activate the plugin for all blogs */
- wpseo_network_activate_deactivate( true );
- }
- }
- /**
- * Run single site / network-wide de-activation of the plugin.
- *
- * @param bool $networkwide Whether the plugin is being de-activated network-wide.
- */
- function wpseo_deactivate( $networkwide = false ) {
- if ( ! is_multisite() || ! $networkwide ) {
- _wpseo_deactivate();
- }
- else {
- /* Multi-site network activation - de-activate the plugin for all blogs */
- wpseo_network_activate_deactivate( false );
- }
- }
- /**
- * Run network-wide (de-)activation of the plugin
- *
- * @param bool $activate True for plugin activation, false for de-activation.
- */
- function wpseo_network_activate_deactivate( $activate = true ) {
- global $wpdb;
- $network_blogs = $wpdb->get_col( $wpdb->prepare( "SELECT blog_id FROM $wpdb->blogs WHERE site_id = %d", $wpdb->siteid ) );
- if ( is_array( $network_blogs ) && $network_blogs !== array() ) {
- foreach ( $network_blogs as $blog_id ) {
- switch_to_blog( $blog_id );
- if ( $activate === true ) {
- _wpseo_activate();
- }
- else {
- _wpseo_deactivate();
- }
- restore_current_blog();
- }
- }
- }
- /**
- * Runs on activation of the plugin.
- */
- function _wpseo_activate() {
- require_once( WPSEO_PATH . 'inc/wpseo-functions.php' );
- wpseo_load_textdomain(); // Make sure we have our translations available for the defaults.
- WPSEO_Options::get_instance();
- if ( ! is_multisite() ) {
- WPSEO_Options::initialize();
- }
- else {
- WPSEO_Options::maybe_set_multisite_defaults( true );
- }
- WPSEO_Options::ensure_options_exist();
- if ( is_multisite() && ms_is_switched() ) {
- delete_option( 'rewrite_rules' );
- }
- else {
- $wpseo_rewrite = new WPSEO_Rewrite();
- $wpseo_rewrite->schedule_flush();
- }
- wpseo_add_capabilities();
- // Clear cache so the changes are obvious.
- WPSEO_Utils::clear_cache();
- do_action( 'wpseo_activate' );
- }
- /**
- * On deactivation, flush the rewrite rules so XML sitemaps stop working.
- */
- function _wpseo_deactivate() {
- require_once( WPSEO_PATH . 'inc/wpseo-functions.php' );
- if ( is_multisite() && ms_is_switched() ) {
- delete_option( 'rewrite_rules' );
- }
- else {
- add_action( 'shutdown', 'flush_rewrite_rules' );
- }
- wpseo_remove_capabilities();
- // Clear cache so the changes are obvious.
- WPSEO_Utils::clear_cache();
- do_action( 'wpseo_deactivate' );
- }
- /**
- * Run wpseo activation routine on creation / activation of a multisite blog if WPSEO is activated
- * network-wide.
- *
- * Will only be called by multisite actions.
- *
- * @internal Unfortunately will fail if the plugin is in the must-use directory
- * @see https://core.trac.wordpress.org/ticket/24205
- *
- * @param int $blog_id Blog ID.
- */
- function wpseo_on_activate_blog( $blog_id ) {
- if ( ! function_exists( 'is_plugin_active_for_network' ) ) {
- require_once( ABSPATH . '/wp-admin/includes/plugin.php' );
- }
- if ( is_plugin_active_for_network( plugin_basename( WPSEO_FILE ) ) ) {
- switch_to_blog( $blog_id );
- wpseo_activate( false );
- restore_current_blog();
- }
- }
- /* ***************************** PLUGIN LOADING *************************** */
- /**
- * Load translations
- */
- function wpseo_load_textdomain() {
- $wpseo_path = str_replace( '\\', '/', WPSEO_PATH );
- $mu_path = str_replace( '\\', '/', WPMU_PLUGIN_DIR );
- if ( false !== stripos( $wpseo_path, $mu_path ) ) {
- load_muplugin_textdomain( 'wordpress-seo', dirname( WPSEO_BASENAME ) . '/languages/' );
- }
- else {
- load_plugin_textdomain( 'wordpress-seo', false, dirname( WPSEO_BASENAME ) . '/languages/' );
- }
- }
- add_action( 'plugins_loaded', 'wpseo_load_textdomain' );
- /**
- * On plugins_loaded: load the minimum amount of essential files for this plugin
- */
- function wpseo_init() {
- require_once( WPSEO_PATH . 'inc/wpseo-functions.php' );
- require_once( WPSEO_PATH . 'inc/wpseo-functions-deprecated.php' );
- // Make sure our option and meta value validation routines and default values are always registered and available.
- WPSEO_Options::get_instance();
- WPSEO_Meta::init();
- $options = WPSEO_Options::get_options( array( 'wpseo', 'wpseo_permalinks', 'wpseo_xml' ) );
- if ( version_compare( $options['version'], WPSEO_VERSION, '<' ) ) {
- new WPSEO_Upgrade();
- // Get a cleaned up version of the $options.
- $options = WPSEO_Options::get_options( array( 'wpseo', 'wpseo_permalinks', 'wpseo_xml' ) );
- }
- if ( $options['stripcategorybase'] === true ) {
- $GLOBALS['wpseo_rewrite'] = new WPSEO_Rewrite;
- }
- if ( $options['enablexmlsitemap'] === true ) {
- $GLOBALS['wpseo_sitemaps'] = new WPSEO_Sitemaps;
- }
- if ( ! defined( 'DOING_AJAX' ) || ! DOING_AJAX ) {
- require_once( WPSEO_PATH . 'inc/wpseo-non-ajax-functions.php' );
- }
- // Init it here because the filter must be present on the frontend as well or it won't work in the customizer.
- new WPSEO_Customizer();
- }
- /**
- * Used to load the required files on the plugins_loaded hook, instead of immediately.
- */
- function wpseo_frontend_init() {
- add_action( 'init', 'initialize_wpseo_front' );
- $options = WPSEO_Options::get_option( 'wpseo_internallinks' );
- if ( $options['breadcrumbs-enable'] === true ) {
- /**
- * If breadcrumbs are active (which they supposedly are if the users has enabled this settings,
- * there's no reason to have bbPress breadcrumbs as well.
- *
- * @internal The class itself is only loaded when the template tag is encountered via
- * the template tag function in the wpseo-functions.php file
- */
- add_filter( 'bbp_get_breadcrumb', '__return_false' );
- }
- add_action( 'template_redirect', 'wpseo_frontend_head_init', 999 );
- }
- /**
- * Instantiate the different social classes on the frontend
- */
- function wpseo_frontend_head_init() {
- $options = WPSEO_Options::get_option( 'wpseo_social' );
- if ( $options['twitter'] === true ) {
- add_action( 'wpseo_head', array( 'WPSEO_Twitter', 'get_instance' ), 40 );
- }
- if ( $options['opengraph'] === true ) {
- $GLOBALS['wpseo_og'] = new WPSEO_OpenGraph;
- }
- }
- /**
- * Used to load the required files on the plugins_loaded hook, instead of immediately.
- */
- function wpseo_admin_init() {
- new WPSEO_Admin_Init();
- }
- /* ***************************** BOOTSTRAP / HOOK INTO WP *************************** */
- $spl_autoload_exists = function_exists( 'spl_autoload_register' );
- $filter_exists = function_exists( 'filter_input' );
- if ( ! $spl_autoload_exists ) {
- add_action( 'admin_init', 'yoast_wpseo_missing_spl', 1 );
- }
- if ( ! $filter_exists ) {
- add_action( 'admin_init', 'yoast_wpseo_missing_filter', 1 );
- }
- if ( ! function_exists( 'wp_installing' ) ) {
- /**
- * We need to define wp_installing in WordPress versions older than 4.4
- *
- * @return bool
- */
- function wp_installing() {
- return defined( 'WP_INSTALLING' );
- }
- }
- if ( ! wp_installing() && ( $spl_autoload_exists && $filter_exists ) ) {
- add_action( 'plugins_loaded', 'wpseo_init', 14 );
- if ( is_admin() ) {
- new Yoast_Alerts();
- if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
- require_once( WPSEO_PATH . 'admin/ajax.php' );
- // Crawl Issue Manager AJAX hooks.
- new WPSEO_GSC_Ajax();
- // Plugin conflict ajax hooks.
- new Yoast_Plugin_Conflict_Ajax();
- if ( filter_input( INPUT_POST, 'action' ) === 'inline-save' ) {
- add_action( 'plugins_loaded', 'wpseo_admin_init', 15 );
- }
- }
- else {
- add_action( 'plugins_loaded', 'wpseo_admin_init', 15 );
- }
- }
- else {
- add_action( 'plugins_loaded', 'wpseo_frontend_init', 15 );
- }
- add_action( 'plugins_loaded', 'load_yoast_notifications' );
- }
- // Activation and deactivation hook.
- register_activation_hook( WPSEO_FILE, 'wpseo_activate' );
- register_deactivation_hook( WPSEO_FILE, 'wpseo_deactivate' );
- add_action( 'wpmu_new_blog', 'wpseo_on_activate_blog' );
- add_action( 'activate_blog', 'wpseo_on_activate_blog' );
- // Loading OnPage integration.
- new WPSEO_OnPage();
- /**
- * Wraps for notifications center class.
- */
- function load_yoast_notifications() {
- // Init Yoast_Notification_Center class.
- Yoast_Notification_Center::get();
- }
- /**
- * Throw an error if the PHP SPL extension is disabled (prevent white screens) and self-deactivate plugin
- *
- * @since 1.5.4
- *
- * @return void
- */
- function yoast_wpseo_missing_spl() {
- if ( is_admin() ) {
- add_action( 'admin_notices', 'yoast_wpseo_missing_spl_notice' );
- yoast_wpseo_self_deactivate();
- }
- }
- /**
- * Returns the notice in case of missing spl extension
- */
- function yoast_wpseo_missing_spl_notice() {
- $message = esc_html__( 'The Standard PHP Library (SPL) extension seem to be unavailable. Please ask your web host to enable it.', 'wordpress-seo' );
- yoast_wpseo_activation_failed_notice( $message );
- }
- /**
- * Throw an error if the Composer autoload is missing and self-deactivate plugin
- *
- * @return void
- */
- function yoast_wpseo_missing_autoload() {
- if ( is_admin() ) {
- add_action( 'admin_notices', 'yoast_wpseo_missing_autoload_notice' );
- yoast_wpseo_self_deactivate();
- }
- }
- /**
- * Returns the notice in case of missing Composer autoload
- */
- function yoast_wpseo_missing_autoload_notice() {
- /* translators: %1$s expands to Yoast SEO, %2$s / %3$s: links to the installation manual in the Readme for the Yoast SEO code repository on GitHub */
- $message = esc_html__( 'The %1$s plugin installation is incomplete. Please refer to %2$sinstallation instructions%3$s.', 'wordpress-seo' );
- $message = sprintf( $message, 'Yoast SEO', '<a href="https://github.com/Yoast/wordpress-seo#installation">', '</a>' );
- yoast_wpseo_activation_failed_notice( $message );
- }
- /**
- * Throw an error if the filter extension is disabled (prevent white screens) and self-deactivate plugin
- *
- * @since 2.0
- *
- * @return void
- */
- function yoast_wpseo_missing_filter() {
- if ( is_admin() ) {
- add_action( 'admin_notices', 'yoast_wpseo_missing_filter_notice' );
- yoast_wpseo_self_deactivate();
- }
- }
- /**
- * Returns the notice in case of missing filter extension
- */
- function yoast_wpseo_missing_filter_notice() {
- $message = esc_html__( 'The filter extension seem to be unavailable. Please ask your web host to enable it.', 'wordpress-seo' );
- yoast_wpseo_activation_failed_notice( $message );
- }
- /**
- * Echo's the Activation failed notice with any given message.
- *
- * @param string $message Message string.
- */
- function yoast_wpseo_activation_failed_notice( $message ) {
- echo '<div class="error"><p>' . __( 'Activation failed:', 'wordpress-seo' ) . ' ' . $message . '</p></div>';
- }
- /**
- * The method will deactivate the plugin, but only once, done by the static $is_deactivated
- */
- function yoast_wpseo_self_deactivate() {
- static $is_deactivated;
- if ( $is_deactivated === null ) {
- $is_deactivated = true;
- deactivate_plugins( plugin_basename( WPSEO_FILE ) );
- if ( isset( $_GET['activate'] ) ) {
- unset( $_GET['activate'] );
- }
- }
- }