| @@ -6,13 +6,9 @@ | ||
| 6 | 6 | */ |
| 7 | 7 | |
| 8 | 8 | namespace Activitypub; |
| 9 | 9 | |
| 10 | -use Activitypub\Activity\Extended_Object\Feature_Authorization; | |
| 11 | -use Activitypub\Activity\Extended_Object\Quote_Authorization; | |
| 12 | 10 | use Activitypub\Collection\Actors; |
| 13 | -use Activitypub\Collection\Outbox; | |
| 14 | -use Activitypub\Handler\Feature_Request; | |
| 15 | 11 | use Activitypub\Transformer\Factory; |
| 16 | 12 | |
| 17 | 13 | /** |
| 18 | 14 | * Singleton class to handle and store the ActivityPub query. |
| @@ -51,15 +47,8 @@ | ||
| 51 | 47 | */ |
| 52 | 48 | private $is_activitypub_request; |
| 53 | 49 | |
| 54 | 50 | /** |
| 55 | - * Whether the current request is from the old host. | |
| 56 | - * | |
| 57 | - * @var bool | |
| 58 | - */ | |
| 59 | - private $is_old_host_request; | |
| 60 | - | |
| 61 | - /** | |
| 62 | 51 | * The constructor. |
| 63 | 52 | */ |
| 64 | 53 | private function __construct() { |
| 65 | 54 | // Do nothing. |
| @@ -94,16 +83,24 @@ | ||
| 94 | 83 | if ( $this->activitypub_object ) { |
| 95 | 84 | return $this->activitypub_object; |
| 96 | 85 | } |
| 97 | 86 | |
| 98 | - if ( $this->prepare_activitypub_data() ) { | |
| 99 | - return $this->activitypub_object; | |
| 87 | + $queried_object = $this->get_queried_object(); | |
| 88 | + | |
| 89 | + if ( ! $queried_object ) { | |
| 90 | + // If the object is not a valid ActivityPub object, try to get a virtual object. | |
| 91 | + $activitypub_object = $this->maybe_get_virtual_object(); | |
| 92 | + | |
| 93 | + if ( $activitypub_object ) { | |
| 94 | + $this->activitypub_object = $activitypub_object; | |
| 95 | + | |
| 96 | + return $this->activitypub_object; | |
| 97 | + } | |
| 100 | 98 | } |
| 101 | 99 | |
| 102 | - $queried_object = $this->get_queried_object(); | |
| 103 | - $transformer = Factory::get_transformer( $queried_object ); | |
| 100 | + $transformer = Factory::get_transformer( $queried_object ); | |
| 104 | 101 | |
| 105 | - if ( $transformer && ! \is_wp_error( $transformer ) ) { | |
| 102 | + if ( $transformer && ! is_wp_error( $transformer ) ) { | |
| 106 | 103 | $this->activitypub_object = $transformer->to_object(); |
| 107 | 104 | } |
| 108 | 105 | |
| 109 | 106 | return $this->activitypub_object; |
| @@ -118,68 +115,29 @@ | ||
| 118 | 115 | if ( $this->activitypub_object_id ) { |
| 119 | 116 | return $this->activitypub_object_id; |
| 120 | 117 | } |
| 121 | 118 | |
| 122 | - if ( $this->prepare_activitypub_data() ) { | |
| 123 | - return $this->activitypub_object_id; | |
| 124 | - } | |
| 119 | + $queried_object = $this->get_queried_object(); | |
| 120 | + $this->activitypub_object_id = null; | |
| 125 | 121 | |
| 126 | - $queried_object = $this->get_queried_object(); | |
| 127 | - $transformer = Factory::get_transformer( $queried_object ); | |
| 122 | + if ( ! $queried_object ) { | |
| 123 | + // If the object is not a valid ActivityPub object, try to get a virtual object. | |
| 124 | + $virtual_object = $this->maybe_get_virtual_object(); | |
| 128 | 125 | |
| 129 | - if ( $transformer && ! \is_wp_error( $transformer ) ) { | |
| 130 | - $this->activitypub_object_id = $transformer->to_id(); | |
| 131 | - } | |
| 126 | + if ( $virtual_object ) { | |
| 127 | + $this->activitypub_object_id = $virtual_object->get_id(); | |
| 132 | 128 | |
| 133 | - return $this->activitypub_object_id; | |
| 134 | - } | |
| 135 | - | |
| 136 | - /** | |
| 137 | - * Prepare and set both ActivityPub object and ID for Outbox activities and virtual objects. | |
| 138 | - * | |
| 139 | - * @return bool True if an object was found and set, false otherwise. | |
| 140 | - */ | |
| 141 | - private function prepare_activitypub_data() { | |
| 142 | - $queried_object = $this->get_queried_object(); | |
| 143 | - | |
| 144 | - if ( \get_query_var( 'stamp' ) ) { | |
| 145 | - if ( $queried_object instanceof \WP_Post ) { | |
| 146 | - return $this->maybe_get_stamp(); | |
| 129 | + return $this->activitypub_object_id; | |
| 147 | 130 | } |
| 148 | - | |
| 149 | - // Note: the blog actor's `actor` query var is '0', which is falsy but valid. | |
| 150 | - if ( $queried_object instanceof \WP_User || '' !== \get_query_var( 'actor' ) ) { | |
| 151 | - return $this->maybe_get_actor_stamp(); | |
| 152 | - } | |
| 153 | 131 | } |
| 154 | 132 | |
| 155 | - // Check for Outbox Activity. | |
| 156 | - if ( | |
| 157 | - $queried_object instanceof \WP_Post && | |
| 158 | - Outbox::POST_TYPE === $queried_object->post_type | |
| 159 | - ) { | |
| 160 | - $activitypub_object = Outbox::maybe_get_activity( $queried_object ); | |
| 133 | + $transformer = Factory::get_transformer( $queried_object ); | |
| 161 | 134 | |
| 162 | - // Check if the Outbox Activity is public. | |
| 163 | - if ( ! \is_wp_error( $activitypub_object ) ) { | |
| 164 | - $this->activitypub_object = $activitypub_object; | |
| 165 | - $this->activitypub_object_id = $this->activitypub_object->get_id(); | |
| 166 | - return true; | |
| 167 | - } | |
| 135 | + if ( $transformer && ! is_wp_error( $transformer ) ) { | |
| 136 | + $this->activitypub_object_id = $transformer->to_id(); | |
| 168 | 137 | } |
| 169 | 138 | |
| 170 | - if ( ! $queried_object ) { | |
| 171 | - // If the object is not a valid ActivityPub object, try to get a virtual object. | |
| 172 | - $activitypub_object = $this->maybe_get_virtual_object(); | |
| 173 | - | |
| 174 | - if ( $activitypub_object ) { | |
| 175 | - $this->activitypub_object = $activitypub_object; | |
| 176 | - $this->activitypub_object_id = $this->activitypub_object->get_id(); | |
| 177 | - return true; | |
| 178 | - } | |
| 179 | - } | |
| 180 | - | |
| 181 | - return false; | |
| 139 | + return $this->activitypub_object_id; | |
| 182 | 140 | } |
| 183 | 141 | |
| 184 | 142 | /** |
| 185 | 143 | * Get the queried object. |
| @@ -206,16 +164,8 @@ | ||
| 206 | 164 | $queried_object = \get_post( $post_id ); |
| 207 | 165 | } |
| 208 | 166 | } |
| 209 | 167 | |
| 210 | - // Check Term by ID. | |
| 211 | - if ( ! $queried_object ) { | |
| 212 | - $term_id = \get_query_var( 'term_id' ); | |
| 213 | - if ( $term_id ) { | |
| 214 | - $queried_object = \get_term( $term_id ); | |
| 215 | - } | |
| 216 | - } | |
| 217 | - | |
| 218 | 168 | // Try to get Author by ID. |
| 219 | 169 | if ( ! $queried_object ) { |
| 220 | 170 | $url = $this->get_request_url(); |
| 221 | 171 | $author_id = url_to_authorid( $url ); |
| @@ -228,9 +178,9 @@ | ||
| 228 | 178 | * Filters the queried object. |
| 229 | 179 | * |
| 230 | 180 | * @param \WP_Term|\WP_Post_Type|\WP_Post|\WP_User|\WP_Comment|null $queried_object The queried object. |
| 231 | 181 | */ |
| 232 | - return \apply_filters( 'activitypub_queried_object', $queried_object ); | |
| 182 | + return apply_filters( 'activitypub_queried_object', $queried_object ); | |
| 233 | 183 | } |
| 234 | 184 | |
| 235 | 185 | /** |
| 236 | 186 | * Get the virtual object. |
| @@ -235,11 +185,12 @@ | ||
| 235 | 185 | /** |
| 236 | 186 | * Get the virtual object. |
| 237 | 187 | * |
| 238 | 188 | * Virtual objects are objects that are not stored in the database, but are created on the fly. |
| 239 | - * The plugin currently supports one virtual object: The Blog-Actor. | |
| 189 | + * The plugins currently supports two virtual objects: The Blog-Actor and the Application-Actor. | |
| 240 | 190 | * |
| 241 | - * @see \Activitypub\Model\Blog | |
| 191 | + * @see \Activitypub\Blog | |
| 192 | + * @see \Activitypub\Application | |
| 242 | 193 | * |
| 243 | 194 | * @return object|null The virtual object. |
| 244 | 195 | */ |
| 245 | 196 | protected function maybe_get_virtual_object() { |
| @@ -250,13 +201,13 @@ | ||
| 250 | 201 | } |
| 251 | 202 | |
| 252 | 203 | $author_id = url_to_authorid( $url ); |
| 253 | 204 | |
| 254 | - if ( ! \is_numeric( $author_id ) ) { | |
| 255 | - $author_id = $url; | |
| 205 | + if ( ! is_numeric( $author_id ) ) { | |
| 206 | + return null; | |
| 256 | 207 | } |
| 257 | 208 | |
| 258 | - $user = Actors::get_by_various( $author_id ); | |
| 209 | + $user = Actors::get_by_id( $author_id ); | |
| 259 | 210 | |
| 260 | 211 | if ( \is_wp_error( $user ) || ! $user ) { |
| 261 | 212 | return null; |
| 262 | 213 | } |
| @@ -268,9 +219,9 @@ | ||
| 268 | 219 | * Get the request URL. |
| 269 | 220 | * |
| 270 | 221 | * @return string|null The request URL. |
| 271 | 222 | */ |
| 272 | - public function get_request_url() { | |
| 223 | + protected function get_request_url() { | |
| 273 | 224 | if ( ! isset( $_SERVER['REQUEST_URI'] ) ) { |
| 274 | 225 | return null; |
| 275 | 226 | } |
| 276 | 227 | |
| @@ -287,234 +238,44 @@ | ||
| 287 | 238 | * |
| 288 | 239 | * @return bool True if the request is an ActivityPub request, false otherwise. |
| 289 | 240 | */ |
| 290 | 241 | public function is_activitypub_request() { |
| 291 | - if ( ! isset( $this->is_activitypub_request ) ) { | |
| 292 | - global $wp_query; | |
| 293 | - | |
| 294 | - $this->is_activitypub_request = false; | |
| 295 | - | |
| 296 | - // One can trigger an ActivityPub request by adding `?activitypub` to the URL. | |
| 297 | - if ( isset( $wp_query->query_vars['activitypub'] ) || isset( $_GET['activitypub'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended | |
| 298 | - \defined( 'ACTIVITYPUB_REQUEST' ) || \define( 'ACTIVITYPUB_REQUEST', true ); | |
| 299 | - $this->is_activitypub_request = true; | |
| 300 | - | |
| 301 | - // The other (more common) option to make an ActivityPub request is to send an Accept header. | |
| 302 | - } elseif ( isset( $_SERVER['HTTP_ACCEPT'] ) ) { | |
| 303 | - /* | |
| 304 | - * The Accept-header decision is delegated to accept_prefers_activitypub() so the plugin and the | |
| 305 | - * Surge cache drop-in classify byte-for-byte identically. Both must hand it the same raw | |
| 306 | - * header, and they reach that raw form differently on purpose: this runs after | |
| 307 | - * wp_magic_quotes() has addslashed $_SERVER, so it wp_unslash()es to recover the original | |
| 308 | - * bytes; the drop-in runs before wp_magic_quotes() and passes its already-raw value | |
| 309 | - * untouched. Do NOT sanitize it (the drop-in can't, its sanitizers aren't loaded yet) and | |
| 310 | - * the helper must not stripslashes() either (that would corrupt the drop-in's genuine | |
| 311 | - * bytes). It is only used to pick a content type, never stored or echoed. | |
| 312 | - * | |
| 313 | - * The request is ActivityPub when the highest-priority (by `q`, then order) media type is | |
| 314 | - * an ActivityPub type (`application/activity+json`, or `application/ld+json` with the AS2 | |
| 315 | - * profile). A browser (`text/html` at q=1) gets the normal page; a client that prefers | |
| 316 | - * ActivityPub but also accepts HTML as a low-`q` fallback (Mastodon) gets ActivityPub. | |
| 317 | - */ | |
| 318 | - // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Classified only; wp_unslash() recovers the raw bytes the pre-plugin cache path sees, and it must not be sanitized. | |
| 319 | - if ( accept_prefers_activitypub( \wp_unslash( $_SERVER['HTTP_ACCEPT'] ) ) ) { | |
| 320 | - \defined( 'ACTIVITYPUB_REQUEST' ) || \define( 'ACTIVITYPUB_REQUEST', true ); | |
| 321 | - $this->is_activitypub_request = true; | |
| 322 | - } | |
| 323 | - } | |
| 242 | + if ( isset( $this->is_activitypub_request ) ) { | |
| 243 | + return $this->is_activitypub_request; | |
| 324 | 244 | } |
| 325 | 245 | |
| 326 | - /** | |
| 327 | - * Filters whether the current request is an ActivityPub request. | |
| 328 | - * | |
| 329 | - * @param bool $is_activitypub_request True if the request is an ActivityPub request, false otherwise. | |
| 330 | - */ | |
| 331 | - return \apply_filters( 'activitypub_is_activitypub_request', $this->is_activitypub_request ); | |
| 332 | - } | |
| 246 | + global $wp_query; | |
| 333 | 247 | |
| 334 | - /** | |
| 335 | - * Check if content negotiation is allowed for a request. | |
| 336 | - * | |
| 337 | - * @return bool True if content negotiation is allowed, false otherwise. | |
| 338 | - */ | |
| 339 | - public function should_negotiate_content() { | |
| 340 | - $return = false; | |
| 341 | - $always_negotiate = array( 'p', 'c', 'author', 'actor', 'stamp', 'preview', 'activitypub' ); | |
| 342 | - $url = \wp_parse_url( $this->get_request_url(), PHP_URL_QUERY ); | |
| 343 | - $query = array(); | |
| 344 | - \wp_parse_str( $url, $query ); | |
| 248 | + // One can trigger an ActivityPub request by adding ?activitypub to the URL. | |
| 249 | + if ( isset( $wp_query->query_vars['activitypub'] ) ) { | |
| 250 | + $this->is_activitypub_request = true; | |
| 345 | 251 | |
| 346 | - // Check if any of the query params are in the `$always_negotiate` array. | |
| 347 | - if ( \array_intersect( \array_keys( $query ), $always_negotiate ) ) { | |
| 348 | - $return = true; | |
| 252 | + return true; | |
| 349 | 253 | } |
| 350 | 254 | |
| 351 | - if ( \get_option( 'activitypub_content_negotiation', '1' ) ) { | |
| 352 | - $return = true; | |
| 353 | - } | |
| 354 | - | |
| 355 | - if ( \is_author() && \get_user_option( 'activitypub_use_permalink_as_id', \get_queried_object_id() ) ) { | |
| 356 | - $return = true; | |
| 357 | - } | |
| 358 | - | |
| 359 | - /** | |
| 360 | - * Filters whether content negotiation should be forced. | |
| 361 | - * | |
| 362 | - * @param bool $return Whether content negotiation should be forced. | |
| 363 | - */ | |
| 364 | - return \apply_filters( 'activitypub_should_negotiate_content', $return ); | |
| 365 | - } | |
| 366 | - | |
| 367 | - /** | |
| 368 | - * Check if the current request is from the old host. | |
| 369 | - * | |
| 370 | - * @return bool True if the request is from the old host, false otherwise. | |
| 371 | - */ | |
| 372 | - public function is_old_host_request() { | |
| 373 | - if ( isset( $this->is_old_host_request ) ) { | |
| 374 | - return $this->is_old_host_request; | |
| 375 | - } | |
| 376 | - | |
| 377 | - $old_host = \get_option( 'activitypub_old_host' ); | |
| 378 | - | |
| 379 | - if ( ! $old_host ) { | |
| 380 | - $this->is_old_host_request = false; | |
| 381 | - return false; | |
| 382 | - } | |
| 383 | - | |
| 384 | - $request_host = isset( $_SERVER['HTTP_HOST'] ) ? \sanitize_text_field( \wp_unslash( $_SERVER['HTTP_HOST'] ) ) : ''; | |
| 385 | - $referer_host = isset( $_SERVER['HTTP_REFERER'] ) ? \wp_parse_url( \sanitize_text_field( \wp_unslash( $_SERVER['HTTP_REFERER'] ) ), PHP_URL_HOST ) : ''; | |
| 386 | - | |
| 387 | - // Check if the domain matches either the request domain or referer. | |
| 388 | - $check = $old_host === $request_host || $old_host === $referer_host; | |
| 389 | - $this->is_old_host_request = $check; | |
| 390 | - | |
| 391 | - return $check; | |
| 392 | - } | |
| 393 | - | |
| 394 | - /** | |
| 395 | - * Fake an old host request. | |
| 396 | - * | |
| 397 | - * @param bool $state Optional. The state to set. Default true. | |
| 398 | - */ | |
| 399 | - public function set_old_host_request( $state = true ) { | |
| 400 | - $this->is_old_host_request = $state; | |
| 401 | - } | |
| 402 | - | |
| 403 | - /** | |
| 404 | - * Maybe get a QuoteAuthorization object from a stamp. | |
| 405 | - * | |
| 406 | - * @return bool True if the object was prepared, false otherwise. | |
| 407 | - */ | |
| 408 | - private function maybe_get_stamp() { | |
| 409 | - require_once ABSPATH . 'wp-admin/includes/post.php'; | |
| 410 | - | |
| 411 | - $stamp = \get_query_var( 'stamp' ); | |
| 412 | - $meta = \get_post_meta_by_id( (int) $stamp ); | |
| 413 | - | |
| 414 | - if ( ! $meta ) { | |
| 415 | - return false; | |
| 416 | - } | |
| 417 | - | |
| 418 | - $post = $this->get_queried_object(); | |
| 419 | - | |
| 420 | 255 | /* |
| 421 | - * Only quote-authorization meta may be reflected as a stamp, and only for the queried | |
| 422 | - * post. Checking the post id alone would still let an unauthenticated request read any | |
| 423 | - * of that post's meta rows (e.g. _edit_lock or private custom fields) by guessing a | |
| 424 | - * meta_id, so the meta key is verified too. | |
| 256 | + * The other (more common) option to make an ActivityPub request | |
| 257 | + * is to send an Accept header. | |
| 425 | 258 | */ |
| 426 | - if ( '_activitypub_quoted_by' !== $meta->meta_key || (int) $meta->post_id !== $post->ID ) { | |
| 427 | - return false; | |
| 428 | - } | |
| 259 | + if ( isset( $_SERVER['HTTP_ACCEPT'] ) ) { | |
| 260 | + $accept = \sanitize_text_field( \wp_unslash( $_SERVER['HTTP_ACCEPT'] ) ); | |
| 429 | 261 | |
| 430 | - $user_uri = get_user_id( $post->post_author ); | |
| 262 | + /* | |
| 263 | + * $accept can be a single value, or a comma separated list of values. | |
| 264 | + * We want to support both scenarios, | |
| 265 | + * and return true when the header includes at least one of the following: | |
| 266 | + * - application/activity+json | |
| 267 | + * - application/ld+json | |
| 268 | + * - application/json | |
| 269 | + */ | |
| 270 | + if ( \preg_match( '/(application\/(ld\+json|activity\+json|json))/i', $accept ) ) { | |
| 271 | + $this->is_activitypub_request = true; | |
| 431 | 272 | |
| 432 | - if ( ! $user_uri ) { | |
| 433 | - return false; | |
| 434 | - } | |
| 435 | - | |
| 436 | - $stamp_uri = \add_query_arg( | |
| 437 | - array( | |
| 438 | - 'p' => $post->ID, | |
| 439 | - 'stamp' => $meta->meta_id, | |
| 440 | - ), | |
| 441 | - \home_url( '/' ) | |
| 442 | - ); | |
| 443 | - | |
| 444 | - $activitypub_object = new Quote_Authorization(); | |
| 445 | - $activitypub_object->set_id( $stamp_uri ); | |
| 446 | - $activitypub_object->set_attributed_to( $user_uri ); | |
| 447 | - $activitypub_object->set_interacting_object( $meta->meta_value ); | |
| 448 | - $activitypub_object->set_interaction_target( get_post_id( $post->ID ) ); | |
| 449 | - | |
| 450 | - $this->activitypub_object = $activitypub_object; | |
| 451 | - $this->activitypub_object_id = $activitypub_object->get_id(); | |
| 452 | - | |
| 453 | - return true; | |
| 454 | - } | |
| 455 | - | |
| 456 | - /** | |
| 457 | - * Maybe get a FeatureAuthorization object from an actor-scoped stamp. | |
| 458 | - * | |
| 459 | - * Resolves URLs of the form `?actor=USER_ID&stamp=STAMP_ID` against the | |
| 460 | - * actor's stamp store, see {@see Feature_Request::get_stamp()}. Ownership | |
| 461 | - * is enforced by resolving the stamp scoped to the queried actor, which | |
| 462 | - * includes the blog actor (`actor=0`). | |
| 463 | - * | |
| 464 | - * @return bool True if a FeatureAuthorization was prepared, false otherwise. | |
| 465 | - */ | |
| 466 | - private function maybe_get_actor_stamp() { | |
| 467 | - $stamp_id = (int) \get_query_var( 'stamp' ); | |
| 468 | - $actor_var = \get_query_var( 'actor' ); | |
| 469 | - | |
| 470 | - if ( ! $stamp_id ) { | |
| 471 | - return false; | |
| 472 | - } | |
| 473 | - | |
| 474 | - if ( '' === $actor_var ) { | |
| 475 | - $queried = $this->get_queried_object(); | |
| 476 | - if ( ! $queried instanceof \WP_User ) { | |
| 477 | - return false; | |
| 273 | + return true; | |
| 478 | 274 | } |
| 479 | - | |
| 480 | - $actor_id = (int) $queried->ID; | |
| 481 | - } else { | |
| 482 | - // Values like '0e1' or '1.5' pass is_numeric() but cast to 0/1 and alias | |
| 483 | - // an actor, so require a plain decimal integer before casting. | |
| 484 | - if ( ! \ctype_digit( (string) $actor_var ) ) { | |
| 485 | - return false; | |
| 486 | - } | |
| 487 | - | |
| 488 | - $actor_id = (int) $actor_var; | |
| 489 | 275 | } |
| 490 | 276 | |
| 491 | - $instrument = Feature_Request::get_stamp( $actor_id, $stamp_id ); | |
| 492 | - if ( null === $instrument ) { | |
| 493 | - return false; | |
| 494 | - } | |
| 277 | + $this->is_activitypub_request = false; | |
| 495 | 278 | |
| 496 | - $actor = Actors::get_by_id( $actor_id ); | |
| 497 | - if ( \is_wp_error( $actor ) ) { | |
| 498 | - return false; | |
| 499 | - } | |
| 500 | - | |
| 501 | - $stamp_url = \add_query_arg( | |
| 502 | - array( | |
| 503 | - 'actor' => $actor_id, | |
| 504 | - 'stamp' => $stamp_id, | |
| 505 | - ), | |
| 506 | - \home_url( '/' ) | |
| 507 | - ); | |
| 508 | - | |
| 509 | - $authorization = new Feature_Authorization(); | |
| 510 | - $authorization->set_id( $stamp_url ); | |
| 511 | - $authorization->set_attributed_to( $actor->get_id() ); | |
| 512 | - $authorization->set_interacting_object( $instrument ); | |
| 513 | - $authorization->set_interaction_target( $actor->get_id() ); | |
| 514 | - | |
| 515 | - $this->activitypub_object = $authorization; | |
| 516 | - $this->activitypub_object_id = $authorization->get_id(); | |
| 517 | - | |
| 518 | - return true; | |
| 279 | + return false; | |
| 519 | 280 | } |
| 520 | 281 | } |
