/** * WP_oEmbed_Controller class, used to provide an oEmbed endpoint. * * @package WordPress * @subpackage Embeds * @since 4.4.0 */ /** * oEmbed API endpoint controller. * * Registers the REST API route and delivers the response data. * The output format (XML or JSON) is handled by the REST API. * * @since 4.4.0 */ #[AllowDynamicProperties] final class WP_oEmbed_Controller { /** * Register the oEmbed REST API route. * * @since 4.4.0 */ public function register_routes() { /** * Filters the maxwidth oEmbed parameter. * * @since 4.4.0 * * @param int $maxwidth Maximum allowed width. Default 600. */ $maxwidth = apply_filters( 'oembed_default_width', 600 ); register_rest_route( 'oembed/1.0', '/embed', array( array( 'methods' => WP_REST_Server::READABLE, 'callback' => array( $this, 'get_item' ), 'permission_callback' => '__return_true', 'args' => array( 'url' => array( 'description' => __( 'The URL of the resource for which to fetch oEmbed data.' ), 'required' => true, 'type' => 'string', 'format' => 'uri', ), 'format' => array( 'default' => 'json', 'sanitize_callback' => 'wp_oembed_ensure_format', ), 'maxwidth' => array( 'default' => $maxwidth, 'sanitize_callback' => 'absint', ), ), ), ) ); register_rest_route( 'oembed/1.0', '/proxy', array( array( 'methods' => WP_REST_Server::READABLE, 'callback' => array( $this, 'get_proxy_item' ), 'permission_callback' => array( $this, 'get_proxy_item_permissions_check' ), 'args' => array( 'url' => array( 'description' => __( 'The URL of the resource for which to fetch oEmbed data.' ), 'required' => true, 'type' => 'string', 'format' => 'uri', ), 'format' => array( 'description' => __( 'The oEmbed format to use.' ), 'type' => 'string', 'default' => 'json', 'enum' => array( 'json', 'xml', ), ), 'maxwidth' => array( 'description' => __( 'The maximum width of the embed frame in pixels.' ), 'type' => 'integer', 'default' => $maxwidth, 'sanitize_callback' => 'absint', ), 'maxheight' => array( 'description' => __( 'The maximum height of the embed frame in pixels.' ), 'type' => 'integer', 'sanitize_callback' => 'absint', ), 'discover' => array( 'description' => __( 'Whether to perform an oEmbed discovery request for unsanctioned providers.' ), 'type' => 'boolean', 'default' => true, ), ), ), ) ); } /** * Callback for the embed API endpoint. * * Returns the JSON object for the post. * * @since 4.4.0 * * @param WP_REST_Request $request Full data about the request. * @return array|WP_Error oEmbed response data or WP_Error on failure. */ public function get_item( $request ) { $post_id = url_to_postid( $request['url'] ); /** * Filters the determined post ID. * * @since 4.4.0 * * @param int $post_id The post ID. * @param string $url The requested URL. */ $post_id = apply_filters( 'oembed_request_post_id', $post_id, $request['url'] ); $data = get_oembed_response_data( $post_id, $request['maxwidth'] ); if ( ! $data ) { return new WP_Error( 'oembed_invalid_url', get_status_header_desc( 404 ), array( 'status' => 404 ) ); } return $data; } /** * Checks if current user can make a proxy oEmbed request. * * @since 4.8.0 * * @return true|WP_Error True if the request has read access, WP_Error object otherwise. */ public function get_proxy_item_permissions_check() { if ( ! current_user_can( 'edit_posts' ) ) { return new WP_Error( 'rest_forbidden', __( 'Sorry, you are not allowed to make proxied oEmbed requests.' ), array( 'status' => rest_authorization_required_code() ) ); } return true; } /** * Callback for the proxy API endpoint. * * Returns the JSON object for the proxied item. * * @since 4.8.0 * * @see WP_oEmbed::get_html() * @global WP_Embed $wp_embed * @global WP_Scripts $wp_scripts * * @param WP_REST_Request $request Full data about the request. * @return object|WP_Error oEmbed response data or WP_Error on failure. */ public function get_proxy_item( $request ) { global $wp_embed, $wp_scripts; $args = $request->get_params(); // Serve oEmbed data from cache if set. unset( $args['_wpnonce'] ); $cache_key = 'oembed_' . md5( serialize( $args ) ); $data = get_transient( $cache_key ); if ( ! empty( $data ) ) { return $data; } $url = $request['url']; unset( $args['url'] ); // Copy maxwidth/maxheight to width/height since WP_oEmbed::fetch() uses these arg names. if ( isset( $args['maxwidth'] ) ) { $args['width'] = $args['maxwidth']; } if ( isset( $args['maxheight'] ) ) { $args['height'] = $args['maxheight']; } // Short-circuit process for URLs belonging to the current site. $data = get_oembed_response_data_for_url( $url, $args ); if ( $data ) { return $data; } $data = _wp_oembed_get_object()->get_data( $url, $args ); if ( false === $data ) { // Try using a classic embed, instead. /* @var WP_Embed $wp_embed */ $html = $wp_embed->get_embed_handler_html( $args, $url ); if ( $html ) { // Check if any scripts were enqueued by the shortcode, and include them in the response. $enqueued_scripts = array(); foreach ( $wp_scripts->queue as $script ) { $enqueued_scripts[] = $wp_scripts->registered[ $script ]->src; } return (object) array( 'provider_name' => __( 'Embed Handler' ), 'html' => $html, 'scripts' => $enqueued_scripts, ); } return new WP_Error( 'oembed_invalid_url', get_status_header_desc( 404 ), array( 'status' => 404 ) ); } /** This filter is documented in wp-includes/class-wp-oembed.php */ $data->html = apply_filters( 'oembed_result', _wp_oembed_get_object()->data2html( (object) $data, $url ), $url, $args ); /** * Filters the oEmbed TTL value (time to live). * * Similar to the {@see 'oembed_ttl'} filter, but for the REST API * oEmbed proxy endpoint. * * @since 4.8.0 * * @param int $time Time to live (in seconds). * @param string $url The attempted embed URL. * @param array $args An array of embed request arguments. */ $ttl = apply_filters( 'rest_oembed_ttl', DAY_IN_SECONDS, $url, $args ); set_transient( $cache_key, $data, $ttl ); return $data; } }