| 1 |
<?php |
| 2 |
/** |
| 3 |
* Interactions collection file. |
| 4 |
* |
| 5 |
* @package Activitypub |
| 6 |
*/ |
| 7 |
|
| 8 |
namespace Activitypub\Collection; |
| 9 |
|
| 10 |
use Activitypub\Comment; |
| 11 |
use Activitypub\Emoji; |
| 12 |
use Activitypub\Webfinger; |
| 13 |
use WP_Comment_Query; |
| 14 |
|
| 15 |
use function Activitypub\get_remote_metadata_by_actor; |
| 16 |
use function Activitypub\is_ap_post; |
| 17 |
use function Activitypub\is_post_disabled; |
| 18 |
use function Activitypub\object_id_to_comment; |
| 19 |
use function Activitypub\object_to_uri; |
| 20 |
use function Activitypub\url_to_commentid; |
| 21 |
|
| 22 |
/** |
| 23 |
* ActivityPub Interactions Collection. |
| 24 |
*/ |
| 25 |
class Interactions { |
| 26 |
const INSERT = 'insert'; |
| 27 |
const UPDATE = 'update'; |
| 28 |
|
| 29 |
/** |
| 30 |
* Add a comment to a post. |
| 31 |
* |
| 32 |
* When $user_id is provided, comment author data is built from the |
| 33 |
* local WordPress user instead of fetching remote actor metadata. |
| 34 |
* |
| 35 |
* @param array $activity The activity-object. |
| 36 |
* @param int|null $user_id Optional. Local user ID for outbox replies. |
| 37 |
* |
| 38 |
* @return int|false|\WP_Error The comment ID or false or WP_Error on failure. |
| 39 |
*/ |
| 40 |
public static function add_comment( $activity, $user_id = null ) { |
| 41 |
$comment_data = self::activity_to_comment( $activity, $user_id ); |
| 42 |
|
| 43 |
if ( ! $comment_data ) { |
| 44 |
return false; |
| 45 |
} |
| 46 |
|
| 47 |
// Determine target URL from reply or quote. |
| 48 |
$parent_comment_id = 0; |
| 49 |
|
| 50 |
if ( ! empty( $activity['object']['inReplyTo'] ) ) { |
| 51 |
// Regular reply. |
| 52 |
$target_url = object_to_uri( $activity['object']['inReplyTo'] ); |
| 53 |
$parent_comment_id = url_to_commentid( $target_url ); |
| 54 |
} else { |
| 55 |
// Check for quote. |
| 56 |
$target_url = self::get_quote_url( $activity ); |
| 57 |
|
| 58 |
if ( ! $target_url ) { |
| 59 |
return false; |
| 60 |
} |
| 61 |
|
| 62 |
// Mark as quote and clean content. |
| 63 |
$comment_data['comment_type'] = 'quote'; |
| 64 |
|
| 65 |
if ( ! empty( $activity['object']['content'] ) ) { |
| 66 |
$pattern = '/<p[^>]*class=["\']quote-inline["\'][^>]*>.*?<\/p>/is'; |
| 67 |
$cleaned_content = \preg_replace( $pattern, '', $activity['object']['content'], 1 ); |
| 68 |
$comment_data['comment_content'] = \wp_kses_post( $cleaned_content ); |
| 69 |
} |
| 70 |
} |
| 71 |
|
| 72 |
// Get post ID from target URL. |
| 73 |
$target_url = \esc_url_raw( $target_url ); |
| 74 |
$comment_post_id = \url_to_postid( $target_url ); |
| 75 |
|
| 76 |
if ( ! $comment_post_id ) { |
| 77 |
// Check for `ap_post`. |
| 78 |
$comment_post = Remote_Posts::get_by_guid( $target_url ); |
| 79 |
if ( $comment_post instanceof \WP_Post ) { |
| 80 |
$comment_post_id = $comment_post->ID; |
| 81 |
} |
| 82 |
} |
| 83 |
|
| 84 |
// Handle nested replies (replies to comments). |
| 85 |
if ( ! $comment_post_id && $parent_comment_id ) { |
| 86 |
$parent_comment = \get_comment( $parent_comment_id ); |
| 87 |
$comment_post_id = $parent_comment->comment_post_ID; |
| 88 |
} |
| 89 |
|
| 90 |
if ( ! $comment_post_id ) { |
| 91 |
// Not a reply to a post or comment. |
| 92 |
return false; |
| 93 |
} |
| 94 |
|
| 95 |
$comment_data['comment_post_ID'] = $comment_post_id; |
| 96 |
$comment_data['comment_parent'] = $parent_comment_id ? $parent_comment_id : 0; |
| 97 |
|
| 98 |
return self::persist( $comment_data ); |
| 99 |
} |
| 100 |
|
| 101 |
/** |
| 102 |
* Update a comment. |
| 103 |
* |
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* @param array $activity The activity object. |
| 105 |
* |
| 106 |
* @return array|string|int|\WP_Error|false The comment data or false on failure. |
| 107 |
*/ |
| 108 |
public static function update_comment( $activity ) { |
| 109 |
$meta = get_remote_metadata_by_actor( $activity['actor'] ); |
| 110 |
|
| 111 |
if ( \is_wp_error( $meta ) || ! \is_array( $meta ) ) { |
| 112 |
return $meta; |
| 113 |
} |
| 114 |
|
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// Determine comment_ID. |
| 116 |
$comment = object_id_to_comment( \esc_url_raw( $activity['object']['id'] ) ); |
| 117 |
$comment_data = \get_comment( $comment, ARRAY_A ); |
| 118 |
|
| 119 |
if ( ! $comment_data ) { |
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return false; |
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} |
| 122 |
|
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// Found a local comment id. |
| 124 |
$comment_data['comment_author'] = \sanitize_text_field( empty( $meta['name'] ) ? $meta['preferredUsername'] : $meta['name'] ); |
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|
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/* |
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* Wrap emoji in content with blocks for runtime replacement. |
| 128 |
* Note: Remote images in comments are stripped for security (only emoji allowed). |
| 129 |
*/ |
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$content = Emoji::wrap_in_content( $activity['object']['content'], $activity['object'] ); |
| 131 |
$comment_data['comment_content'] = \addslashes( $content ); |
| 132 |
|
| 133 |
return self::persist( $comment_data, self::UPDATE ); |
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} |
| 135 |
|
| 136 |
/** |
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* Adds an incoming Like, Announce, ... as a comment to a post. |
| 138 |
* |
| 139 |
* @param array $activity Activity array. |
| 140 |
* |
| 141 |
* @return array|string|int|\WP_Error|false Comment data or `false` on failure. |
| 142 |
*/ |
| 143 |
public static function add_reaction( $activity ) { |
| 144 |
$url = object_to_uri( $activity['object'] ); |
| 145 |
$comment_post_id = \url_to_postid( $url ); |
| 146 |
$parent_comment_id = url_to_commentid( $url ); |
| 147 |
|
| 148 |
if ( ! $comment_post_id ) { |
| 149 |
// Check for `ap_post`. |
| 150 |
$comment_post = Remote_Posts::get_by_guid( $url ); |
| 151 |
if ( $comment_post instanceof \WP_Post ) { |
| 152 |
$comment_post_id = $comment_post->ID; |
| 153 |
} |
| 154 |
} |
| 155 |
|
| 156 |
if ( ! $comment_post_id && $parent_comment_id ) { |
| 157 |
$parent_comment = \get_comment( $parent_comment_id ); |
| 158 |
$comment_post_id = $parent_comment->comment_post_ID; |
| 159 |
} |
| 160 |
|
| 161 |
if ( ! $comment_post_id ) { |
| 162 |
// Not a reply to a post or comment. |
| 163 |
return false; |
| 164 |
} |
| 165 |
|
| 166 |
$comment_type = Comment::get_comment_type_by_activity_type( $activity['type'] ); |
| 167 |
if ( ! $comment_type ) { |
| 168 |
// Not a valid comment type. |
| 169 |
return false; |
| 170 |
} |
| 171 |
|
| 172 |
$comment_data = self::activity_to_comment( $activity ); |
| 173 |
if ( ! $comment_data ) { |
| 174 |
return false; |
| 175 |
} |
| 176 |
|
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$comment_data['comment_post_ID'] = $comment_post_id; |
| 178 |
$comment_data['comment_parent'] = $parent_comment_id ? $parent_comment_id : 0; |
| 179 |
$comment_data['comment_content'] = \esc_html( $comment_type['excerpt'] ); |
| 180 |
$comment_data['comment_type'] = \esc_attr( $comment_type['type'] ); |
| 181 |
$comment_data['comment_meta']['source_id'] = \esc_url_raw( $activity['id'] ); |
| 182 |
|
| 183 |
return self::persist( $comment_data ); |
| 184 |
} |
| 185 |
|
| 186 |
/** |
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* Get interaction(s) by ID. |
| 188 |
* |
| 189 |
* @param string $url The URL/ID to get interactions for. |
| 190 |
* |
| 191 |
* @return array The interactions as WP_Comment objects. |
| 192 |
*/ |
| 193 |
public static function get_by_id( $url ) { |
| 194 |
$args = array( |
| 195 |
'nopaging' => true, |
| 196 |
// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query |
| 197 |
'meta_query' => array( |
| 198 |
'relation' => 'AND', |
| 199 |
array( |
| 200 |
'key' => 'protocol', |
| 201 |
'value' => 'activitypub', |
| 202 |
), |
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array( |
| 204 |
'relation' => 'OR', |
| 205 |
array( |
| 206 |
'key' => 'source_url', |
| 207 |
'value' => $url, |
| 208 |
), |
| 209 |
array( |
| 210 |
'key' => 'source_id', |
| 211 |
'value' => $url, |
| 212 |
), |
| 213 |
), |
| 214 |
), |
| 215 |
); |
| 216 |
|
| 217 |
$query = new WP_Comment_Query( $args ); |
| 218 |
return $query->comments; |
| 219 |
} |
| 220 |
|
| 221 |
/** |
| 222 |
* Get interaction(s) for a given URL/ID. |
| 223 |
* |
| 224 |
* @deprecated 7.6.0 Use {@see Interactions::get_by_id()}. |
| 225 |
* |
| 226 |
* @param string $url The URL/ID to get interactions for. |
| 227 |
* |
| 228 |
* @return array The interactions as WP_Comment objects. |
| 229 |
*/ |
| 230 |
public static function get_interaction_by_id( $url ) { |
| 231 |
\_deprecated_function( __METHOD__, '7.6.0', 'Activitypub\Collection\Interactions::get_by_id' ); |
| 232 |
|
| 233 |
return self::get_by_id( $url ); |
| 234 |
} |
| 235 |
|
| 236 |
/** |
| 237 |
* Get interaction(s) by actor. |
| 238 |
* |
| 239 |
* @param string $actor The Actor-URL. |
| 240 |
* |
| 241 |
* @return array The interactions as WP_Comment objects. |
| 242 |
*/ |
| 243 |
public static function get_by_actor( $actor ) { |
| 244 |
$meta = get_remote_metadata_by_actor( $actor ); |
| 245 |
|
| 246 |
// Get URL, because $actor seems to be the ID. |
| 247 |
if ( $meta && ! is_wp_error( $meta ) && isset( $meta['url'] ) ) { |
| 248 |
$actor = object_to_uri( $meta['url'] ); |
| 249 |
} |
| 250 |
|
| 251 |
$args = array( |
| 252 |
'nopaging' => true, |
| 253 |
'author_url' => $actor, |
| 254 |
// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query |
| 255 |
'meta_query' => array( |
| 256 |
array( |
| 257 |
'key' => 'protocol', |
| 258 |
'value' => 'activitypub', |
| 259 |
), |
| 260 |
), |
| 261 |
); |
| 262 |
|
| 263 |
return \get_comments( $args ); |
| 264 |
} |
| 265 |
|
| 266 |
/** |
| 267 |
* Get interaction(s) by remote actor ID. |
| 268 |
* |
| 269 |
* This is an optimized query that uses the remote actor post ID directly |
| 270 |
* instead of querying by author_url. |
| 271 |
* |
| 272 |
* @param int $remote_actor_id The remote actor post ID. |
| 273 |
* |
| 274 |
* @return array The interactions as WP_Comment objects. |
| 275 |
*/ |
| 276 |
public static function get_by_remote_actor_id( $remote_actor_id ) { |
| 277 |
$args = array( |
| 278 |
'nopaging' => true, |
| 279 |
// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query |
| 280 |
'meta_query' => array( |
| 281 |
'relation' => 'AND', |
| 282 |
array( |
| 283 |
'key' => 'protocol', |
| 284 |
'value' => 'activitypub', |
| 285 |
), |
| 286 |
array( |
| 287 |
'key' => '_activitypub_remote_actor_id', |
| 288 |
'value' => $remote_actor_id, |
| 289 |
), |
| 290 |
), |
| 291 |
); |
| 292 |
|
| 293 |
return \get_comments( $args ); |
| 294 |
} |
| 295 |
|
| 296 |
/** |
| 297 |
* Get interaction(s) for a given actor. |
| 298 |
* |
| 299 |
* @deprecated 7.6.0 Use {@see Interactions::get_by_actor()}. |
| 300 |
* |
| 301 |
* @param string $actor The Actor-URL. |
| 302 |
* |
| 303 |
* @return array The interactions as WP_Comment objects. |
| 304 |
*/ |
| 305 |
public static function get_interactions_by_actor( $actor ) { |
| 306 |
\_deprecated_function( __METHOD__, '7.6.0', 'Activitypub\Collection\Interactions::get_by_actor' ); |
| 307 |
|
| 308 |
return self::get_by_actor( $actor ); |
| 309 |
} |
| 310 |
|
| 311 |
/** |
| 312 |
* Adds line breaks to the list of allowed comment tags. |
| 313 |
* |
| 314 |
* @param array $allowed_tags Allowed HTML tags. |
| 315 |
* @param string $context Optional. Context. Default empty. |
| 316 |
* |
| 317 |
* @return array Filtered tag list. |
| 318 |
*/ |
| 319 |
public static function allowed_comment_html( $allowed_tags, $context = '' ) { |
| 320 |
if ( 'pre_comment_content' !== $context ) { |
| 321 |
// Do nothing. |
| 322 |
return $allowed_tags; |
| 323 |
} |
| 324 |
|
| 325 |
// Add `p` and `br` to the list of allowed tags. |
| 326 |
if ( ! array_key_exists( 'br', $allowed_tags ) ) { |
| 327 |
$allowed_tags['br'] = array(); |
| 328 |
} |
| 329 |
|
| 330 |
if ( ! array_key_exists( 'p', $allowed_tags ) ) { |
| 331 |
$allowed_tags['p'] = array(); |
| 332 |
} |
| 333 |
|
| 334 |
// Add `img` for custom emoji support with strict validation. |
| 335 |
$emoji_html = Emoji::get_kses_allowed_html(); |
| 336 |
if ( ! array_key_exists( 'img', $allowed_tags ) ) { |
| 337 |
$allowed_tags['img'] = $emoji_html['img']; |
| 338 |
} |
| 339 |
|
| 340 |
return $allowed_tags; |
| 341 |
} |
| 342 |
|
| 343 |
/** |
| 344 |
* Convert an Activity to a WP_Comment. |
| 345 |
* |
| 346 |
* When $user_id is provided, comment author data is built from the |
| 347 |
* local WordPress user instead of fetching remote actor metadata. |
| 348 |
* |
| 349 |
* @param array $activity The Activity array. |
| 350 |
* @param int|null $user_id Optional. Local user ID for outbox comments. |
| 351 |
* |
| 352 |
* @return array|false The comment data or false on failure. |
| 353 |
*/ |
| 354 |
public static function activity_to_comment( $activity, $user_id = null ) { |
| 355 |
$comment_content = null; |
| 356 |
|
| 357 |
if ( $user_id ) { |
| 358 |
// Outbox: resolve author from the local WordPress user. |
| 359 |
$user = \get_userdata( $user_id ); |
| 360 |
|
| 361 |
if ( ! $user ) { |
| 362 |
return false; |
| 363 |
} |
| 364 |
|
| 365 |
$comment_author = $user->display_name; |
| 366 |
$comment_author_url = $user->user_url; |
| 367 |
$comment_author_email = $user->user_email; |
| 368 |
$comment_content = \wp_kses_post( $activity['object']['content'] ?? '' ); |
| 369 |
} else { |
| 370 |
// S2S: resolve author from remote actor metadata. |
| 371 |
$actor = object_to_uri( $activity['actor'] ?? null ); |
| 372 |
$actor = get_remote_metadata_by_actor( $actor ); |
| 373 |
|
| 374 |
if ( ! $actor || is_wp_error( $actor ) ) { |
| 375 |
return false; |
| 376 |
} |
| 377 |
|
| 378 |
$comment_author = null; |
| 379 |
if ( ! empty( $actor['name'] ) ) { |
| 380 |
$comment_author = $actor['name']; |
| 381 |
} elseif ( ! empty( $actor['preferredUsername'] ) ) { |
| 382 |
$comment_author = $actor['preferredUsername']; |
| 383 |
} |
| 384 |
|
| 385 |
if ( empty( $comment_author ) && \get_option( 'require_name_email' ) ) { |
| 386 |
return false; |
| 387 |
} |
| 388 |
|
| 389 |
$comment_author = $comment_author ?? __( 'Anonymous', 'activitypub' ); |
| 390 |
$comment_author_url = \esc_url_raw( object_to_uri( $actor['url'] ?? $actor['id'] ) ); |
| 391 |
|
| 392 |
$webfinger = Webfinger::uri_to_acct( $comment_author_url ); |
| 393 |
if ( is_wp_error( $webfinger ) ) { |
| 394 |
$comment_author_email = ''; |
| 395 |
} else { |
| 396 |
$comment_author_email = str_replace( 'acct:', '', $webfinger ); |
| 397 |
} |
| 398 |
|
| 399 |
if ( isset( $activity['object']['content'] ) ) { |
| 400 |
/* |
| 401 |
* Wrap emoji in content with blocks for runtime replacement. |
| 402 |
* Note: Remote images in comments are stripped for security (only emoji allowed). |
| 403 |
*/ |
| 404 |
$content = Emoji::wrap_in_content( $activity['object']['content'], $activity['object'] ); |
| 405 |
$comment_content = \addslashes( $content ); |
| 406 |
} |
| 407 |
} |
| 408 |
|
| 409 |
$published = $activity['object']['published'] ?? $activity['published'] ?? 'now'; |
| 410 |
$gm_date = \gmdate( 'Y-m-d H:i:s', \strtotime( $published ) ); |
| 411 |
|
| 412 |
$comment_data = array( |
| 413 |
'comment_author' => $comment_author, |
| 414 |
'comment_author_url' => $comment_author_url, |
| 415 |
'comment_content' => $comment_content, |
| 416 |
'comment_type' => 'comment', |
| 417 |
'comment_author_email' => $comment_author_email, |
| 418 |
'comment_date' => \get_date_from_gmt( $gm_date ), |
| 419 |
'comment_date_gmt' => $gm_date, |
| 420 |
'comment_meta' => array(), |
| 421 |
); |
| 422 |
|
| 423 |
if ( $user_id ) { |
| 424 |
$comment_data['user_id'] = $user_id; |
| 425 |
} else { |
| 426 |
$comment_data['comment_meta']['protocol'] = 'activitypub'; |
| 427 |
$comment_data['comment_meta']['source_id'] = \esc_url_raw( object_to_uri( $activity['object'] ) ); |
| 428 |
|
| 429 |
// Store reference to remote actor post. |
| 430 |
$actor_uri = object_to_uri( $activity['actor'] ?? null ); |
| 431 |
if ( $actor_uri ) { |
| 432 |
$remote_actor = Remote_Actors::get_by_uri( $actor_uri ); |
| 433 |
if ( ! \is_wp_error( $remote_actor ) ) { |
| 434 |
$comment_data['comment_meta']['_activitypub_remote_actor_id'] = $remote_actor->ID; |
| 435 |
} |
| 436 |
} |
| 437 |
|
| 438 |
if ( isset( $activity['object']['url'] ) ) { |
| 439 |
$comment_data['comment_meta']['source_url'] = \esc_url_raw( object_to_uri( $activity['object']['url'] ) ); |
| 440 |
} |
| 441 |
} |
| 442 |
|
| 443 |
return $comment_data; |
| 444 |
} |
| 445 |
|
| 446 |
/** |
| 447 |
* Persist a comment. |
| 448 |
* |
| 449 |
* @param array $comment_data The comment data array. |
| 450 |
* @param string $action Optional. Either 'insert' or 'update'. Default 'insert'. |
| 451 |
* |
| 452 |
* @return array|string|int|\WP_Error|false The comment data or false on failure |
| 453 |
*/ |
| 454 |
public static function persist( $comment_data, $action = self::INSERT ) { |
| 455 |
if ( |
| 456 |
is_post_disabled( $comment_data['comment_post_ID'] ) && |
| 457 |
! is_ap_post( $comment_data['comment_post_ID'] ) |
| 458 |
) { |
| 459 |
return false; |
| 460 |
} |
| 461 |
|
| 462 |
// Disable flood control. |
| 463 |
\remove_action( 'check_comment_flood', 'check_comment_flood_db' ); |
| 464 |
// Do not require email for AP entries. |
| 465 |
\add_filter( 'pre_option_require_name_email', '__return_false' ); |
| 466 |
// No nonce possible for this submission route. |
| 467 |
\add_filter( |
| 468 |
'akismet_comment_nonce', |
| 469 |
static function () { |
| 470 |
return 'inactive'; |
| 471 |
} |
| 472 |
); |
| 473 |
\add_filter( 'wp_kses_allowed_html', array( self::class, 'allowed_comment_html' ), 10, 2 ); |
| 474 |
|
| 475 |
if ( self::INSERT === $action ) { |
| 476 |
$state = \wp_new_comment( $comment_data, true ); |
| 477 |
} else { |
| 478 |
$state = \wp_update_comment( $comment_data, true ); |
| 479 |
} |
| 480 |
|
| 481 |
\remove_filter( 'wp_kses_allowed_html', array( self::class, 'allowed_comment_html' ) ); |
| 482 |
\remove_filter( 'pre_option_require_name_email', '__return_false' ); |
| 483 |
// Restore flood control. |
| 484 |
\add_action( 'check_comment_flood', 'check_comment_flood_db', 10, 4 ); |
| 485 |
|
| 486 |
if ( 1 === $state ) { |
| 487 |
return $comment_data; |
| 488 |
} else { |
| 489 |
return $state; // Either WP_Comment, false, a WP_Error, 0, or 1! |
| 490 |
} |
| 491 |
} |
| 492 |
|
| 493 |
/** |
| 494 |
* Get the total number of interactions by type for a given ID. |
| 495 |
* |
| 496 |
* @param int $post_id The post ID. |
| 497 |
* @param string $type The type of interaction to count. |
| 498 |
* |
| 499 |
* @return int The total number of interactions. |
| 500 |
*/ |
| 501 |
public static function count_by_type( $post_id, $type ) { |
| 502 |
return \get_comments( |
| 503 |
array( |
| 504 |
'post_id' => $post_id, |
| 505 |
'status' => 'approve', |
| 506 |
'type' => $type, |
| 507 |
'count' => true, |
| 508 |
'paging' => false, |
| 509 |
'fields' => 'ids', |
| 510 |
) |
| 511 |
); |
| 512 |
} |
| 513 |
|
| 514 |
/** |
| 515 |
* Get the quote URL from an activity. |
| 516 |
* |
| 517 |
* Checks for quote properties in priority order: quote -> quoteUrl -> quoteUri -> _misskey_quote. |
| 518 |
* |
| 519 |
* @param array $activity The activity array. |
| 520 |
* |
| 521 |
* @return string|false The quote URL or false if not found. |
| 522 |
*/ |
| 523 |
public static function get_quote_url( $activity ) { |
| 524 |
if ( ! empty( $activity['object']['quote'] ) ) { |
| 525 |
return object_to_uri( $activity['object']['quote'] ); |
| 526 |
} |
| 527 |
|
| 528 |
if ( ! empty( $activity['object']['quoteUrl'] ) ) { |
| 529 |
return object_to_uri( $activity['object']['quoteUrl'] ); |
| 530 |
} |
| 531 |
|
| 532 |
if ( ! empty( $activity['object']['quoteUri'] ) ) { |
| 533 |
return object_to_uri( $activity['object']['quoteUri'] ); |
| 534 |
} |
| 535 |
|
| 536 |
if ( ! empty( $activity['object']['_misskey_quote'] ) ) { |
| 537 |
return object_to_uri( $activity['object']['_misskey_quote'] ); |
| 538 |
} |
| 539 |
|
| 540 |
return false; |
| 541 |
} |
| 542 |
} |
| 543 |
|
