| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | /* | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * Utility functions to generate data synced to wpcom | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | class Jetpack_Sync_Functions { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | 	const HTTPS_CHECK_OPTION_PREFIX = 'jetpack_sync_https_history_'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | 	const HTTPS_CHECK_HISTORY       = 5; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | 	public static function get_modules() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | 		require_once JETPACK__PLUGIN_DIR . 'class.jetpack-admin.php'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | 		return Jetpack_Admin::init()->get_modules(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | 	public static function get_taxonomies() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | 		global $wp_taxonomies; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | 		$wp_taxonomies_without_callbacks = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | 		foreach ( $wp_taxonomies as $taxonomy_name => $taxonomy ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  | 			$sanitized_taxonomy = self::sanitize_taxonomy( $taxonomy ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | 			if ( ! empty( $sanitized_taxonomy ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  | 				$wp_taxonomies_without_callbacks[ $taxonomy_name ] = $sanitized_taxonomy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  | 			} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  | 				error_log( 'Jetpack: Encountered a recusive taxonomy:' . $taxonomy_name ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  | 		return $wp_taxonomies_without_callbacks; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  | 	} | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 30 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 31 |  |  | 	public static function get_shortcodes() { | 
            
                                                                        
                            
            
                                    
            
            
                | 32 |  |  | 		global $shortcode_tags; | 
            
                                                                        
                            
            
                                    
            
            
                | 33 |  |  | 		return array_keys( $shortcode_tags ); | 
            
                                                                        
                            
            
                                    
            
            
                | 34 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  | 	 * Removes any callback data since we will not be able to process it on our side anyways. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  | 	public static function sanitize_taxonomy( $taxonomy ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  | 		// Lets clone the taxonomy object instead of modifing the global one. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  | 		$cloned_taxonomy = json_decode( wp_json_encode( $taxonomy ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | 		// recursive taxonomies are no fun. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  | 		if ( is_null( $cloned_taxonomy ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  | 			return null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  | 		// Remove any meta_box_cb if they are not the default wp ones. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  | 		if ( isset( $cloned_taxonomy->meta_box_cb ) && | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  | 			 ! in_array( $cloned_taxonomy->meta_box_cb, array( 'post_tags_meta_box', 'post_categories_meta_box' ) ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  | 			$cloned_taxonomy->meta_box_cb = null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  | 		// Remove update call back | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  | 		if ( isset( $cloned_taxonomy->update_count_callback ) && | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  | 			 ! is_null( $cloned_taxonomy->update_count_callback ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  | 			$cloned_taxonomy->update_count_callback = null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  | 		// Remove rest_controller_class if it something other then the default. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  | 		if ( isset( $cloned_taxonomy->rest_controller_class ) && | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  | 			 'WP_REST_Terms_Controller' !== $cloned_taxonomy->rest_controller_class ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  | 			$cloned_taxonomy->rest_controller_class = null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  | 		return $cloned_taxonomy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  | 	public static function get_post_types() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  | 		global $wp_post_types; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  | 		$post_types_without_callbacks = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  | 		foreach ( $wp_post_types as $post_type_name => $post_type ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  | 			$sanitized_post_type = self::sanitize_post_type( $post_type ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  | 			if ( ! empty( $sanitized_post_type ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  | 				$post_types_without_callbacks[ $post_type_name ] = $sanitized_post_type; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  | 			} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  | 				error_log( 'Jetpack: Encountered a recusive post_type:' . $post_type_name ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  | 		return $post_types_without_callbacks; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  | 	public static function sanitize_post_type( $post_type ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  | 		// Lets clone the post type object instead of modifing the global one. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  | 		$sanitized_post_type = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  | 		foreach ( Jetpack_Sync_Defaults::$default_post_type_attributes as $attribute_key => $default_value ) { | 
                            
                    |  |  |  | 
                                                                                        
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                | 85 |  |  | 			if ( isset( $post_type->{ $attribute_key } ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  | 				$sanitized_post_type[ $attribute_key ] = $post_type->{ $attribute_key }; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  | 		return (object) $sanitized_post_type; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  | 	public static function expand_synced_post_type( $sanitized_post_type, $post_type ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  | 		$post_type        = sanitize_key( $post_type ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  | 		$post_type_object = new WP_Post_Type( $post_type, $sanitized_post_type ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  | 		$post_type_object->add_supports(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  | 		$post_type_object->add_rewrite_rules(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  | 		$post_type_object->add_hooks(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  | 		$post_type_object->register_taxonomies(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  | 		return (object) $post_type_object; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  | 	public static function get_post_type_features() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  | 		global $_wp_post_type_features; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  | 		return $_wp_post_type_features; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  | 	public static function get_hosting_provider() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  | 		if ( defined( 'GD_SYSTEM_PLUGIN_DIR' ) || class_exists( '\\WPaaS\\Plugin' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  | 			return 'gd-managed-wp'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  | 		if ( defined( 'MM_BASE_DIR' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  | 			return 'bh'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  | 		if ( defined( 'IS_PRESSABLE' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  | 			return 'pressable'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  | 		if ( function_exists( 'is_wpe' ) || function_exists( 'is_wpe_snapshot' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  | 			return 'wpe'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  | 		if ( defined( 'VIP_GO_ENV' ) && false !== VIP_GO_ENV ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  | 			return 'vip-go'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  | 		return 'unknown'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  | 	public static function rest_api_allowed_post_types() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  | 		/** This filter is already documented in class.json-api-endpoints.php */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  | 		return apply_filters( 'rest_api_allowed_post_types', array( 'post', 'page', 'revision' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  | 	public static function rest_api_allowed_public_metadata() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  | 		/** This filter is documented in json-endpoints/class.wpcom-json-api-post-endpoint.php */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  | 		return apply_filters( 'rest_api_allowed_public_metadata', array() ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  | 	 * Finds out if a site is using a version control system. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  | 	 * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  | 	 **/ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  | 	public static function is_version_controlled() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  | 		if ( ! class_exists( 'WP_Automatic_Updater' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  | 			require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  | 		$updater = new WP_Automatic_Updater(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  | 		return (bool) strval( $updater->is_vcs_checkout( $context = ABSPATH ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  | 	 * Returns true if the site has file write access false otherwise. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  | 	 * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  | 	 **/ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  | 	public static function file_system_write_access() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  | 		if ( ! function_exists( 'get_filesystem_method' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  | 			require_once ABSPATH . 'wp-admin/includes/file.php'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  | 		require_once ABSPATH . 'wp-admin/includes/template.php'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  | 		$filesystem_method = get_filesystem_method(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  | 		if ( 'direct' === $filesystem_method ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  | 			return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  | 		ob_start(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  | 		if ( ! function_exists( 'request_filesystem_credentials' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  | 			require_once ABSPATH . 'wp-admin/includes/file.php'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  | 		$filesystem_credentials_are_stored = request_filesystem_credentials( self_admin_url() ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  | 		ob_end_clean(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  | 		if ( $filesystem_credentials_are_stored ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  | 			return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  | 		return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  | 	 * Helper function that is used when getting home or siteurl values. Decides | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  | 	 * whether to get the raw or filtered value. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  | 	 * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  | 	public static function get_raw_or_filtered_url( $url_type ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  | 		$url_function = ( 'home' == $url_type ) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  | 			? 'home_url' | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  | 			: 'site_url'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  | 		if ( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  | 			! Jetpack_Constants::is_defined( 'JETPACK_SYNC_USE_RAW_URL' ) || | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  | 			Jetpack_Constants::get_constant( 'JETPACK_SYNC_USE_RAW_URL' ) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  | 		) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  | 			$scheme = is_ssl() ? 'https' : 'http'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  | 			$url    = self::get_raw_url( $url_type ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  | 			$url    = set_url_scheme( $url, $scheme ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  | 		} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  | 			$url = self::normalize_www_in_url( $url_type, $url_function ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  | 		return self::get_protocol_normalized_url( $url_function, $url ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  | 	public static function home_url() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  | 		$url = self::get_raw_or_filtered_url( 'home' ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  | 		/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  | 		 * Allows overriding of the home_url value that is synced back to WordPress.com. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  | 		 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  | 		 * @since 5.2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 |  |  | 		 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 |  |  | 		 * @param string $home_url | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  | 		 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  | 		return esc_url_raw( apply_filters( 'jetpack_sync_home_url', $url ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  | 	public static function site_url() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 223 |  |  | 		$url = self::get_raw_or_filtered_url( 'siteurl' ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 224 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 225 |  |  | 		/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 226 |  |  | 		 * Allows overriding of the site_url value that is synced back to WordPress.com. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 227 |  |  | 		 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 228 |  |  | 		 * @since 5.2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 229 |  |  | 		 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 230 |  |  | 		 * @param string $site_url | 
            
                                                                                                            
                            
            
                                    
            
            
                | 231 |  |  | 		 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 232 |  |  | 		return esc_url_raw( apply_filters( 'jetpack_sync_site_url', $url ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 233 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 234 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 235 |  |  | 	public static function main_network_site_url() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 236 |  |  | 		return self::get_protocol_normalized_url( 'main_network_site_url', network_site_url() ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 237 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 238 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 239 |  |  | 	public static function get_protocol_normalized_url( $callable, $new_value ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 240 |  |  | 		$option_key = self::HTTPS_CHECK_OPTION_PREFIX . $callable; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 241 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 242 |  |  | 		$parsed_url = wp_parse_url( $new_value ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 243 |  |  | 		if ( ! $parsed_url ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 244 |  |  | 			return $new_value; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 245 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 246 |  |  | 		if ( array_key_exists( 'scheme', $parsed_url ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 247 |  |  | 			$scheme = $parsed_url['scheme']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 248 |  |  | 		} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 249 |  |  | 			$scheme = ''; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 250 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 251 |  |  | 		$scheme_history   = get_option( $option_key, array() ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 252 |  |  | 		$scheme_history[] = $scheme; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 253 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 254 |  |  | 		// Limit length to self::HTTPS_CHECK_HISTORY | 
            
                                                                                                            
                            
            
                                    
            
            
                | 255 |  |  | 		$scheme_history = array_slice( $scheme_history, ( self::HTTPS_CHECK_HISTORY * -1 ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 256 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 257 |  |  | 		update_option( $option_key, $scheme_history ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 258 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 259 |  |  | 		$forced_scheme = in_array( 'https', $scheme_history ) ? 'https' : 'http'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 260 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 261 |  |  | 		return set_url_scheme( $new_value, $forced_scheme ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 262 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 263 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 264 |  |  | 	public static function get_raw_url( $option_name ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 265 |  |  | 		$value    = null; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 266 |  |  | 		$constant = ( 'home' == $option_name ) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 267 |  |  | 			? 'WP_HOME' | 
            
                                                                                                            
                            
            
                                    
            
            
                | 268 |  |  | 			: 'WP_SITEURL'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 269 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 270 |  |  | 		// Since we disregard the constant for multisites in ms-default-filters.php, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 271 |  |  | 		// let's also use the db value if this is a multisite. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 272 |  |  | 		if ( ! is_multisite() && Jetpack_Constants::is_defined( $constant ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 273 |  |  | 			$value = Jetpack_Constants::get_constant( $constant ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 274 |  |  | 		} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 275 |  |  | 			// Let's get the option from the database so that we can bypass filters. This will help | 
            
                                                                                                            
                            
            
                                    
            
            
                | 276 |  |  | 			// ensure that we get more uniform values. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 277 |  |  | 			$value = Jetpack_Options::get_raw_option( $option_name ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 278 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 279 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 280 |  |  | 		return $value; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 281 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 282 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 283 |  |  | 	public static function normalize_www_in_url( $option, $url_function ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 284 |  |  | 		$url        = wp_parse_url( call_user_func( $url_function ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 285 |  |  | 		$option_url = wp_parse_url( get_option( $option ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 286 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 287 |  |  | 		if ( ! $option_url || ! $url ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 288 |  |  | 			return $url; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 289 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 290 |  |  |  | 
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 291 |  | View Code Duplication | 		if ( $url['host'] === "www.{$option_url[ 'host' ]}" ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 292 |  |  | 			// remove www if not present in option URL | 
            
                                                                                                            
                            
            
                                    
            
            
                | 293 |  |  | 			$url['host'] = $option_url['host']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 294 |  |  | 		} | 
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 295 |  | View Code Duplication | 		if ( $option_url['host'] === "www.{$url[ 'host' ]}" ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 296 |  |  | 			// add www if present in option URL | 
            
                                                                                                            
                            
            
                                    
            
            
                | 297 |  |  | 			$url['host'] = $option_url['host']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 298 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 299 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 300 |  |  | 		$normalized_url = "{$url['scheme']}://{$url['host']}"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 301 |  |  | 		if ( isset( $url['path'] ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 302 |  |  | 			$normalized_url .= "{$url['path']}"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 303 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 304 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 305 |  |  | 		if ( isset( $url['query'] ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 306 |  |  | 			$normalized_url .= "?{$url['query']}"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 307 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 308 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 309 |  |  | 		return $normalized_url; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 310 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 311 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 312 |  |  | 	public static function get_plugins() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 313 |  |  | 		if ( ! function_exists( 'get_plugins' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 314 |  |  | 			require_once ABSPATH . 'wp-admin/includes/plugin.php'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 315 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 316 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 317 |  |  | 		/** This filter is documented in wp-admin/includes/class-wp-plugins-list-table.php */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 318 |  |  | 		return apply_filters( 'all_plugins', get_plugins() ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 319 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 320 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 321 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 322 |  |  | 	 * Get custom action link tags that the plugin is using | 
            
                                                                                                            
                            
            
                                    
            
            
                | 323 |  |  | 	 * Ref: https://codex.wordpress.org/Plugin_API/Filter_Reference/plugin_action_links_(plugin_file_name) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 324 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 325 |  |  | 	 * @return array of plugin action links (key: link name value: url) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 326 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 327 |  |  | 	public static function get_plugins_action_links( $plugin_file_singular = null ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 328 |  |  | 		// Some sites may have DOM disabled in PHP fail early | 
            
                                                                                                            
                            
            
                                    
            
            
                | 329 |  |  | 		if ( ! class_exists( 'DOMDocument' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 330 |  |  | 			return array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 331 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 332 |  |  | 		$plugins_action_links = get_option( 'jetpack_plugin_api_action_links', array() ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 333 |  |  | 		if ( ! empty( $plugins_action_links ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 334 |  |  | 			if ( is_null( $plugin_file_singular ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 335 |  |  | 				return $plugins_action_links; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 336 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 337 |  |  | 			return ( isset( $plugins_action_links[ $plugin_file_singular ] ) ? $plugins_action_links[ $plugin_file_singular ] : null ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 338 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 339 |  |  | 		return array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 340 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 341 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 342 |  |  | 	public static function wp_version() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 343 |  |  | 		global $wp_version; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 344 |  |  | 		return $wp_version; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 345 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 346 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 347 |  |  | 	public static function site_icon_url( $size = 512 ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 348 |  |  | 		if ( ! function_exists( 'get_site_icon_url' ) || ! has_site_icon() ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 349 |  |  | 			return get_option( 'jetpack_site_icon_url' ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 350 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 351 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 352 |  |  | 		return get_site_icon_url( $size ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 353 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 354 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 355 |  |  | 	public static function roles() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 356 |  |  | 		$wp_roles = wp_roles(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 357 |  |  | 		return $wp_roles->roles; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 358 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 359 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 360 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 361 |  |  | 	 * Determine time zone from WordPress' options "timezone_string" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 362 |  |  | 	 * and "gmt_offset". | 
            
                                                                                                            
                            
            
                                    
            
            
                | 363 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 364 |  |  | 	 * 1. Check if `timezone_string` is set and return it. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 365 |  |  | 	 * 2. Check if `gmt_offset` is set, formats UTC-offset from it and return it. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 366 |  |  | 	 * 3. Default to "UTC+0" if nothing is set. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 367 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 368 |  |  | 	 * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 369 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 370 |  |  | 	public static function get_timezone() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 371 |  |  | 		$timezone_string = get_option( 'timezone_string' ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 372 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 373 |  |  | 		if ( ! empty( $timezone_string ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 374 |  |  | 			return str_replace( '_', ' ', $timezone_string ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 375 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 376 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 377 |  |  | 		$gmt_offset = get_option( 'gmt_offset', 0 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 378 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 379 |  |  | 		$formatted_gmt_offset = sprintf( '%+g', floatval( $gmt_offset ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 380 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 381 |  |  | 		$formatted_gmt_offset = str_replace( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 382 |  |  | 			array( '.25', '.5', '.75' ), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 383 |  |  | 			array( ':15', ':30', ':45' ), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 384 |  |  | 			(string) $formatted_gmt_offset | 
            
                                                                                                            
                            
            
                                    
            
            
                | 385 |  |  | 		); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 386 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 387 |  |  | 		/* translators: %s is UTC offset, e.g. "+1" */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 388 |  |  | 		return sprintf( __( 'UTC%s', 'jetpack' ), $formatted_gmt_offset ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 389 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 390 |  |  | 	// New in WP 5.1 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 391 |  |  | 	public static function get_paused_themes() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 392 |  |  | 		if ( function_exists( 'wp_paused_themes' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 393 |  |  | 			$paused_themes = wp_paused_themes(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 394 |  |  | 			return $paused_themes->get_all(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 395 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 396 |  |  | 		return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 397 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 398 |  |  | 	// New in WP 5.1 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 399 |  |  | 	public static function get_paused_plugins() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 400 |  |  | 		if ( function_exists( 'wp_paused_plugins' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 401 |  |  | 			$paused_plugins = wp_paused_plugins(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 402 |  |  | 			return $paused_plugins->get_all(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 403 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 404 |  |  | 		return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 405 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 406 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 407 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 408 |  |  | 	 * Determine the class that extends `WP_Importer` which is responsible for | 
            
                                                                                                            
                            
            
                                    
            
            
                | 409 |  |  | 	 * the current action. Designed to be used within an action handler. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 410 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 411 |  |  | 	 * @return string  The name of the calling class, or 'unknown'. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 412 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 413 |  |  | 	public static function get_calling_importer_class() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 414 |  |  | 		// If WP_Importer doesn't exist, neither will any importer that extends it | 
            
                                                                                                            
                            
            
                                    
            
            
                | 415 |  |  | 		if ( ! class_exists( 'WP_Importer' ) ){ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 416 |  |  | 			return 'unknown'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 417 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 418 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 419 |  |  | 		$action = current_filter(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 420 |  |  | 		$backtrace = wp_debug_backtrace_summary( null, 0, false ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 421 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 422 |  |  | 		$do_action_pos = -1; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 423 |  |  | 		for ( $i = 0; $i < count( $backtrace ); $i++ ) { | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 424 |  |  | 			// Find the location in the stack of the calling action | 
            
                                                                                                            
                            
            
                                    
            
            
                | 425 |  |  | 			if ( preg_match( "/^do_action\\(\'([^\']+)/", $backtrace[ $i ], $matches ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 426 |  |  | 				if ( $matches[1] === $action ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 427 |  |  | 					$do_action_pos = $i; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 428 |  |  | 					break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 429 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 430 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 431 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 432 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 433 |  |  | 		// if the action wasn't called, the calling class is unknown | 
            
                                                                                                            
                            
            
                                    
            
            
                | 434 |  |  | 		if ( -1 === $do_action_pos ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 435 |  |  | 			return 'unknown'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 436 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 437 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 438 |  |  | 		// continue iterating the stack looking for a caller that extends WP_Importer | 
            
                                                                                                            
                            
            
                                    
            
            
                | 439 |  |  | 		for ( $i = $do_action_pos + 1; $i < count( $backtrace ); $i++ ) { | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 440 |  |  | 			// grab only class_name from the trace | 
            
                                                                                                            
                            
            
                                    
            
            
                | 441 |  |  | 			list( $class_name ) = explode( '->', $backtrace[ $i ] ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 442 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 443 |  |  | 			// check if the class extends WP_Importer | 
            
                                                                                                            
                            
            
                                    
            
            
                | 444 |  |  | 			if ( class_exists( $class_name ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 445 |  |  | 				$parents = class_parents( $class_name ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 446 |  |  | 				if ( $parents && in_array( 'WP_Importer', $parents ) ) { | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 447 |  |  | 					return $class_name; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 448 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 449 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 450 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 451 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 452 |  |  | 		// If we've exhausted the stack without a match, the calling class is unknown | 
            
                                                                                                            
                            
            
                                    
            
            
                | 453 |  |  | 		return 'unknown'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 454 |  |  | 	} | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 455 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 456 |  |  |  | 
            
                        
This check looks for access to properties that are not accessible from the current context.
If you need to make a property accessible to another context you can either raise its visibility level or provide an accessible getter in the defining class.