| @@ -6,146 +6,24 @@ | ||
| 6 | 6 | */ |
| 7 | 7 | |
| 8 | 8 | namespace Activitypub; |
| 9 | 9 | |
| 10 | +use WP_REST_Response; | |
| 11 | + | |
| 10 | 12 | /** |
| 11 | - * Class to handle embedding ActivityPub content. | |
| 13 | + * Class to handle embedding ActivityPub content | |
| 12 | 14 | */ |
| 13 | 15 | class Embed { |
| 14 | 16 | |
| 15 | 17 | /** |
| 16 | - * Initialize the embed handler. | |
| 18 | + * Initialize the embed handler | |
| 17 | 19 | */ |
| 18 | 20 | public static function init() { |
| 19 | - \add_filter( 'pre_oembed_result', array( self::class, 'maybe_use_activitypub_embed' ), 10, 3 ); | |
| 20 | - \add_filter( 'oembed_dataparse', array( self::class, 'handle_filtered_oembed_result' ), 11, 3 ); | |
| 21 | - \add_filter( 'oembed_request_post_id', array( self::class, 'register_fallback_hook' ) ); | |
| 21 | + add_filter( 'pre_oembed_result', array( __CLASS__, 'maybe_use_activitypub_embed' ), 10, 3 ); | |
| 22 | + add_filter( 'oembed_dataparse', array( __CLASS__, 'handle_filtered_oembed_result' ), 11, 3 ); | |
| 22 | 23 | } |
| 23 | 24 | |
| 24 | 25 | /** |
| 25 | - * Get an ActivityPub embed HTML for a URL. | |
| 26 | - * | |
| 27 | - * @param string $url The URL to get the embed for. | |
| 28 | - * @param boolean $inline_css Whether to inline CSS. Default true. | |
| 29 | - * | |
| 30 | - * @return string|false The embed HTML or false if not found. | |
| 31 | - */ | |
| 32 | - public static function get_html( $url, $inline_css = true ) { | |
| 33 | - // Try to get ActivityPub representation. | |
| 34 | - $object = Http::get_remote_object( $url ); | |
| 35 | - | |
| 36 | - if ( \is_wp_error( $object ) || ! is_activity_object( $object ) ) { | |
| 37 | - return false; | |
| 38 | - } | |
| 39 | - | |
| 40 | - return self::get_html_for_object( $object, $inline_css ); | |
| 41 | - } | |
| 42 | - | |
| 43 | - /** | |
| 44 | - * Get an ActivityPub embed HTML for an ActivityPub object. | |
| 45 | - * | |
| 46 | - * @param array $activity_object The ActivityPub object to build the embed for. | |
| 47 | - * @param boolean $inline_css Whether to inline CSS. Default true. | |
| 48 | - * | |
| 49 | - * @return string The embed HTML. | |
| 50 | - */ | |
| 51 | - public static function get_html_for_object( $activity_object, $inline_css = true ) { | |
| 52 | - $author_name = $activity_object['attributedTo'] ?? ''; | |
| 53 | - $avatar_url = $activity_object['icon']['url'] ?? ''; | |
| 54 | - $author_url = $author_name; | |
| 55 | - | |
| 56 | - // If we don't have an avatar URL, but we have an author URL, try to fetch it. | |
| 57 | - if ( ! $avatar_url && $author_url ) { | |
| 58 | - $author = Http::get_remote_object( $author_url ); | |
| 59 | - if ( \is_wp_error( $author ) ) { | |
| 60 | - $author = array(); | |
| 61 | - } else { | |
| 62 | - $avatar_url = $author['icon']['url'] ?? ''; | |
| 63 | - $author_name = empty( $author['name'] ) ? $author_name : $author['name']; | |
| 64 | - } | |
| 65 | - } | |
| 66 | - | |
| 67 | - // Create Webfinger where not found. | |
| 68 | - if ( empty( $author['webfinger'] ) ) { | |
| 69 | - if ( ! empty( $author['preferredUsername'] ) && ! empty( $author['url'] ) ) { | |
| 70 | - // Construct webfinger-style identifier from username and domain. | |
| 71 | - $domain = \wp_parse_url( object_to_uri( $author['url'] ), PHP_URL_HOST ); | |
| 72 | - $author['webfinger'] = '@' . $author['preferredUsername'] . '@' . $domain; | |
| 73 | - } else { | |
| 74 | - // Fallback to URL. | |
| 75 | - $author['webfinger'] = $author_url; | |
| 76 | - } | |
| 77 | - } | |
| 78 | - | |
| 79 | - $title = $activity_object['name'] ?? ''; | |
| 80 | - $content = $activity_object['content'] ?? ''; | |
| 81 | - $published = isset( $activity_object['published'] ) ? \gmdate( \get_option( 'date_format' ) . ', ' . \get_option( 'time_format' ), \strtotime( $activity_object['published'] ) ) : ''; | |
| 82 | - $boosts = isset( $activity_object['shares']['totalItems'] ) ? (int) $activity_object['shares']['totalItems'] : null; | |
| 83 | - $favorites = isset( $activity_object['likes']['totalItems'] ) ? (int) $activity_object['likes']['totalItems'] : null; | |
| 84 | - | |
| 85 | - $audio = null; | |
| 86 | - $images = array(); | |
| 87 | - $video = null; | |
| 88 | - if ( isset( $activity_object['image']['url'] ) ) { | |
| 89 | - $images = array( | |
| 90 | - array( | |
| 91 | - 'type' => 'Image', | |
| 92 | - 'url' => $activity_object['image']['url'], | |
| 93 | - 'name' => $activity_object['image']['name'] ?? '', | |
| 94 | - ), | |
| 95 | - ); | |
| 96 | - } elseif ( isset( $activity_object['attachment'] ) ) { | |
| 97 | - foreach ( $activity_object['attachment'] as $attachment ) { | |
| 98 | - $type = isset( $attachment['mediaType'] ) ? \strtok( $attachment['mediaType'], '/' ) : \strtolower( $attachment['type'] ); | |
| 99 | - | |
| 100 | - switch ( $type ) { | |
| 101 | - case 'image': | |
| 102 | - $images[] = $attachment; | |
| 103 | - break; | |
| 104 | - case 'video': | |
| 105 | - $video = $attachment; | |
| 106 | - break 2; | |
| 107 | - case 'audio': | |
| 108 | - $audio = $attachment; | |
| 109 | - break 2; | |
| 110 | - } | |
| 111 | - } | |
| 112 | - $images = \array_slice( $images, 0, 4 ); | |
| 113 | - } | |
| 114 | - | |
| 115 | - \ob_start(); | |
| 116 | - \load_template( | |
| 117 | - ACTIVITYPUB_PLUGIN_DIR . 'templates/embed.php', | |
| 118 | - false, | |
| 119 | - array( | |
| 120 | - 'audio' => $audio, | |
| 121 | - 'author_name' => $author_name, | |
| 122 | - 'author_url' => $author_url, | |
| 123 | - 'avatar_url' => $avatar_url, | |
| 124 | - 'boosts' => $boosts, | |
| 125 | - 'content' => $content, | |
| 126 | - 'favorites' => $favorites, | |
| 127 | - 'images' => $images, | |
| 128 | - 'published' => $published, | |
| 129 | - 'title' => $title, | |
| 130 | - 'url' => $activity_object['id'], | |
| 131 | - 'video' => $video, | |
| 132 | - 'webfinger' => $author['webfinger'], | |
| 133 | - ) | |
| 134 | - ); | |
| 135 | - | |
| 136 | - if ( $inline_css ) { | |
| 137 | - // Grab the CSS. | |
| 138 | - $css = \file_get_contents( ACTIVITYPUB_PLUGIN_DIR . 'assets/css/activitypub-embed.css' ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents | |
| 139 | - // We embed CSS directly because this may be in an iframe. | |
| 140 | - \printf( '<style>%s</style>', $css ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped | |
| 141 | - } | |
| 142 | - | |
| 143 | - // A little light whitespace cleanup. | |
| 144 | - return \preg_replace( '/\s+/', ' ', \ob_get_clean() ); | |
| 145 | - } | |
| 146 | - | |
| 147 | - /** | |
| 148 | 26 | * Check if a real oEmbed result exists for the given URL. |
| 149 | 27 | * |
| 150 | 28 | * @param string $url The URL to check. |
| 151 | 29 | * @param array $args Additional arguments passed to wp_oembed_get(). |
| @@ -152,15 +30,15 @@ | ||
| 152 | 30 | * @return bool True if a real oEmbed result exists, false otherwise. |
| 153 | 31 | */ |
| 154 | 32 | public static function has_real_oembed( $url, $args = array() ) { |
| 155 | 33 | // Temporarily remove our filter to avoid infinite loops. |
| 156 | - \remove_filter( 'pre_oembed_result', array( self::class, 'maybe_use_activitypub_embed' ) ); | |
| 34 | + remove_filter( 'pre_oembed_result', array( __CLASS__, 'maybe_use_activitypub_embed' ), 10, 3 ); | |
| 157 | 35 | |
| 158 | 36 | // Try to get a "real" oEmbed result. If found, it'll be cached to avoid unnecessary HTTP requests in `wp_oembed_get`. |
| 159 | - $oembed_result = \wp_oembed_get( $url, $args ); | |
| 37 | + $oembed_result = wp_oembed_get( $url, $args ); | |
| 160 | 38 | |
| 161 | 39 | // Add our filter back. |
| 162 | - \add_filter( 'pre_oembed_result', array( self::class, 'maybe_use_activitypub_embed' ), 10, 3 ); | |
| 40 | + add_filter( 'pre_oembed_result', array( __CLASS__, 'maybe_use_activitypub_embed' ), 10, 3 ); | |
| 163 | 41 | |
| 164 | 42 | return false !== $oembed_result; |
| 165 | 43 | } |
| 166 | 44 | |
| @@ -213,19 +91,19 @@ | ||
| 213 | 91 | return $html; |
| 214 | 92 | } |
| 215 | 93 | |
| 216 | 94 | // If this isn't a rich or video type, we can't help. |
| 217 | - if ( ! isset( $data->type ) || ! \in_array( $data->type, array( 'rich', 'video' ), true ) ) { | |
| 95 | + if ( ! isset( $data->type ) || ! in_array( $data->type, array( 'rich', 'video' ), true ) ) { | |
| 218 | 96 | return $html; |
| 219 | 97 | } |
| 220 | 98 | |
| 221 | 99 | // If there's no HTML in the data, we can't help. |
| 222 | - if ( empty( $data->html ) || ! \is_string( $data->html ) ) { | |
| 100 | + if ( empty( $data->html ) || ! is_string( $data->html ) ) { | |
| 223 | 101 | return $html; |
| 224 | 102 | } |
| 225 | 103 | |
| 226 | 104 | // Try to get ActivityPub representation. |
| 227 | - $activitypub_html = self::get_html( $url ); | |
| 105 | + $activitypub_html = get_embed_html( $url ); | |
| 228 | 106 | if ( ! $activitypub_html ) { |
| 229 | 107 | return $html; |
| 230 | 108 | } |
| 231 | 109 | |
| @@ -230,76 +108,6 @@ | ||
| 230 | 108 | } |
| 231 | 109 | |
| 232 | 110 | // Return our safer ActivityPub embed HTML. |
| 233 | 111 | return $activitypub_html; |
| 234 | - } | |
| 235 | - | |
| 236 | - /** | |
| 237 | - * Register the fallback hook for oEmbed requests. | |
| 238 | - * | |
| 239 | - * Avoids filtering every single API request. | |
| 240 | - * | |
| 241 | - * @param int $post_id The post ID. | |
| 242 | - * @return int The post ID. | |
| 243 | - */ | |
| 244 | - public static function register_fallback_hook( $post_id ) { | |
| 245 | - \add_filter( 'rest_request_after_callbacks', array( self::class, 'oembed_fediverse_fallback' ), 10, 3 ); | |
| 246 | - | |
| 247 | - return $post_id; | |
| 248 | - } | |
| 249 | - | |
| 250 | - /** | |
| 251 | - * Fallback for oEmbed requests to the Fediverse. | |
| 252 | - * | |
| 253 | - * @param \WP_REST_Response|\WP_Error $response Result to send to the client. | |
| 254 | - * @param array $handler Route handler used for the request. | |
| 255 | - * @param \WP_REST_Request $request Request used to generate the response. | |
| 256 | - * | |
| 257 | - * @return \WP_REST_Response|\WP_Error The response to send to the client. | |
| 258 | - */ | |
| 259 | - public static function oembed_fediverse_fallback( $response, $handler, $request ) { | |
| 260 | - if ( '/oembed/1.0/proxy' !== $request->get_route() ) { | |
| 261 | - return $response; | |
| 262 | - } | |
| 263 | - | |
| 264 | - if ( ( \is_wp_error( $response ) && 'oembed_invalid_url' === $response->get_error_code() ) || empty( $response->html ) ) { | |
| 265 | - $url = $request->get_param( 'url' ); | |
| 266 | - $html = self::get_html( $url ); | |
| 267 | - | |
| 268 | - if ( $html ) { | |
| 269 | - $args = $request->get_params(); | |
| 270 | - $data = (object) array( | |
| 271 | - 'provider_name' => 'ActivityPub oEmbed', | |
| 272 | - 'html' => $html, | |
| 273 | - 'scripts' => array(), | |
| 274 | - ); | |
| 275 | - | |
| 276 | - /** This filter is documented in wp-includes/class-wp-oembed.php */ | |
| 277 | - $data->html = \apply_filters( 'oembed_result', $data->html, $url, $args ); | |
| 278 | - | |
| 279 | - /** This filter is documented in wp-includes/class-wp-oembed-controller.php */ | |
| 280 | - $ttl = \apply_filters( 'rest_oembed_ttl', DAY_IN_SECONDS, $url, $args ); | |
| 281 | - | |
| 282 | - \set_transient( 'oembed_' . \md5( \serialize( $args ) ), $data, $ttl ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_serialize | |
| 283 | - | |
| 284 | - $response = new \WP_REST_Response( $data ); | |
| 285 | - } | |
| 286 | - } elseif ( ! empty( $request->get_param( 'activitypub' ) ) ) { | |
| 287 | - /* | |
| 288 | - * If the 'activitypub' parameter is present, perform an additional validation step: | |
| 289 | - * Ensure the provided URL resolves to a valid ActivityPub object. | |
| 290 | - * | |
| 291 | - * This differs from the standard oEmbed flow, which does not explicitly validate | |
| 292 | - * the URL as an ActivityPub object unless the initial oEmbed lookup fails. | |
| 293 | - * This block is triggered for requests from the Federated Reply block, where we | |
| 294 | - * want to inform users whether post authors will be notified of the reply. | |
| 295 | - */ | |
| 296 | - $object = Http::get_remote_object( $request->get_param( 'url' ) ); | |
| 297 | - | |
| 298 | - if ( \is_wp_error( $object ) || ! is_activity_object( $object ) ) { | |
| 299 | - $response = new \WP_Error( 'oembed_invalid_url', \get_status_header_desc( 404 ), array( 'status' => 404 ) ); | |
| 300 | - } | |
| 301 | - } | |
| 302 | - | |
| 303 | - return $response; | |
| 304 | 112 | } |
| 305 | 113 | } |
