| 1 |
<?php |
| 2 |
namespace Activitypub; |
| 3 |
|
| 4 |
use WP_Query; |
| 5 |
use WP_Error; |
| 6 |
use Activitypub\Http; |
| 7 |
use Activitypub\Comment; |
| 8 |
use Activitypub\Webfinger; |
| 9 |
use Activitypub\Activity\Activity; |
| 10 |
use Activitypub\Collection\Followers; |
| 11 |
use Activitypub\Collection\Users; |
| 12 |
use Activitypub\Collection\Extra_Fields; |
| 13 |
|
| 14 |
/** |
| 15 |
* Returns the ActivityPub default JSON-context |
| 16 |
* |
| 17 |
* @return array the activitypub context |
| 18 |
*/ |
| 19 |
function get_context() { |
| 20 |
$context = Activity::JSON_LD_CONTEXT; |
| 21 |
|
| 22 |
return \apply_filters( 'activitypub_json_context', $context ); |
| 23 |
} |
| 24 |
|
| 25 |
function safe_remote_post( $url, $body, $user_id ) { |
| 26 |
return Http::post( $url, $body, $user_id ); |
| 27 |
} |
| 28 |
|
| 29 |
function safe_remote_get( $url ) { |
| 30 |
return Http::get( $url ); |
| 31 |
} |
| 32 |
|
| 33 |
/** |
| 34 |
* Returns a users WebFinger "resource" |
| 35 |
* |
| 36 |
* @param int $user_id The User-ID. |
| 37 |
* |
| 38 |
* @return string The User-Resource. |
| 39 |
*/ |
| 40 |
function get_webfinger_resource( $user_id ) { |
| 41 |
return Webfinger::get_user_resource( $user_id ); |
| 42 |
} |
| 43 |
|
| 44 |
/** |
| 45 |
* Requests the Meta-Data from the Actors profile |
| 46 |
* |
| 47 |
* @param string $actor The Actor URL. |
| 48 |
* @param bool $cached If the result should be cached. |
| 49 |
* |
| 50 |
* @return array|WP_Error The Actor profile as array or WP_Error on failure. |
| 51 |
*/ |
| 52 |
function get_remote_metadata_by_actor( $actor, $cached = true ) { |
| 53 |
$pre = apply_filters( 'pre_get_remote_metadata_by_actor', false, $actor ); |
| 54 |
if ( $pre ) { |
| 55 |
return $pre; |
| 56 |
} |
| 57 |
|
| 58 |
if ( is_array( $actor ) ) { |
| 59 |
if ( array_key_exists( 'id', $actor ) ) { |
| 60 |
$actor = $actor['id']; |
| 61 |
} elseif ( array_key_exists( 'url', $actor ) ) { |
| 62 |
$actor = $actor['url']; |
| 63 |
} else { |
| 64 |
return new WP_Error( |
| 65 |
'activitypub_no_valid_actor_identifier', |
| 66 |
\__( 'The "actor" identifier is not valid', 'activitypub' ), |
| 67 |
array( 'status' => 404, 'actor' => $actor ) |
| 68 |
); |
| 69 |
} |
| 70 |
} |
| 71 |
|
| 72 |
if ( preg_match( '/^@?' . ACTIVITYPUB_USERNAME_REGEXP . '$/i', $actor ) ) { |
| 73 |
$actor = Webfinger::resolve( $actor ); |
| 74 |
} |
| 75 |
|
| 76 |
if ( ! $actor ) { |
| 77 |
return new WP_Error( |
| 78 |
'activitypub_no_valid_actor_identifier', |
| 79 |
\__( 'The "actor" identifier is not valid', 'activitypub' ), |
| 80 |
array( 'status' => 404, 'actor' => $actor ) |
| 81 |
); |
| 82 |
} |
| 83 |
|
| 84 |
if ( is_wp_error( $actor ) ) { |
| 85 |
return $actor; |
| 86 |
} |
| 87 |
|
| 88 |
$transient_key = 'activitypub_' . $actor; |
| 89 |
|
| 90 |
// only check the cache if needed. |
| 91 |
if ( $cached ) { |
| 92 |
$metadata = \get_transient( $transient_key ); |
| 93 |
|
| 94 |
if ( $metadata ) { |
| 95 |
return $metadata; |
| 96 |
} |
| 97 |
} |
| 98 |
|
| 99 |
if ( ! \wp_http_validate_url( $actor ) ) { |
| 100 |
$metadata = new WP_Error( |
| 101 |
'activitypub_no_valid_actor_url', |
| 102 |
\__( 'The "actor" is no valid URL', 'activitypub' ), |
| 103 |
array( 'status' => 400, 'actor' => $actor ) |
| 104 |
); |
| 105 |
return $metadata; |
| 106 |
} |
| 107 |
|
| 108 |
$response = Http::get( $actor ); |
| 109 |
|
| 110 |
if ( \is_wp_error( $response ) ) { |
| 111 |
return $response; |
| 112 |
} |
| 113 |
|
| 114 |
$metadata = \wp_remote_retrieve_body( $response ); |
| 115 |
$metadata = \json_decode( $metadata, true ); |
| 116 |
|
| 117 |
if ( ! $metadata ) { |
| 118 |
$metadata = new WP_Error( |
| 119 |
'activitypub_invalid_json', |
| 120 |
\__( 'No valid JSON data', 'activitypub' ), |
| 121 |
array( 'status' => 400, 'actor' => $actor ) |
| 122 |
); |
| 123 |
return $metadata; |
| 124 |
} |
| 125 |
|
| 126 |
\set_transient( $transient_key, $metadata, WEEK_IN_SECONDS ); |
| 127 |
|
| 128 |
return $metadata; |
| 129 |
} |
| 130 |
|
| 131 |
/** |
| 132 |
* Returns the followers of a given user. |
| 133 |
* |
| 134 |
* @param int $user_id The User-ID. |
| 135 |
* |
| 136 |
* @return array The followers. |
| 137 |
*/ |
| 138 |
function get_followers( $user_id ) { |
| 139 |
return Followers::get_followers( $user_id ); |
| 140 |
} |
| 141 |
|
| 142 |
/** |
| 143 |
* Count the number of followers for a given user. |
| 144 |
* |
| 145 |
* @param int $user_id The User-ID. |
| 146 |
* |
| 147 |
* @return int The number of followers. |
| 148 |
*/ |
| 149 |
function count_followers( $user_id ) { |
| 150 |
return Followers::count_followers( $user_id ); |
| 151 |
} |
| 152 |
|
| 153 |
/** |
| 154 |
* Examine a url and try to determine the author ID it represents. |
| 155 |
* |
| 156 |
* Checks are supposedly from the hosted site blog. |
| 157 |
* |
| 158 |
* @param string $url Permalink to check. |
| 159 |
* |
| 160 |
* @return int User ID, or 0 on failure. |
| 161 |
*/ |
| 162 |
function url_to_authorid( $url ) { |
| 163 |
global $wp_rewrite; |
| 164 |
|
| 165 |
// check if url hase the same host |
| 166 |
if ( \wp_parse_url( \home_url(), \PHP_URL_HOST ) !== \wp_parse_url( $url, \PHP_URL_HOST ) ) { |
| 167 |
return 0; |
| 168 |
} |
| 169 |
|
| 170 |
// first, check to see if there is a 'author=N' to match against |
| 171 |
if ( \preg_match( '/[?&]author=(\d+)/i', $url, $values ) ) { |
| 172 |
$id = \absint( $values[1] ); |
| 173 |
if ( $id ) { |
| 174 |
return $id; |
| 175 |
} |
| 176 |
} |
| 177 |
|
| 178 |
// check to see if we are using rewrite rules |
| 179 |
$rewrite = $wp_rewrite->wp_rewrite_rules(); |
| 180 |
|
| 181 |
// not using rewrite rules, and 'author=N' method failed, so we're out of options |
| 182 |
if ( empty( $rewrite ) ) { |
| 183 |
return 0; |
| 184 |
} |
| 185 |
|
| 186 |
// generate rewrite rule for the author url |
| 187 |
$author_rewrite = $wp_rewrite->get_author_permastruct(); |
| 188 |
$author_regexp = \str_replace( '%author%', '', $author_rewrite ); |
| 189 |
|
| 190 |
// match the rewrite rule with the passed url |
| 191 |
if ( \preg_match( '/https?:\/\/(.+)' . \preg_quote( $author_regexp, '/' ) . '([^\/]+)/i', $url, $match ) ) { |
| 192 |
$user = \get_user_by( 'slug', $match[2] ); |
| 193 |
if ( $user ) { |
| 194 |
return $user->ID; |
| 195 |
} |
| 196 |
} |
| 197 |
|
| 198 |
return 0; |
| 199 |
} |
| 200 |
|
| 201 |
/** |
| 202 |
* Verify if url is a wp_ap_comment, |
| 203 |
* Or if it is a previously received remote comment |
| 204 |
* |
| 205 |
* @return int comment_id |
| 206 |
*/ |
| 207 |
function is_comment() { |
| 208 |
$comment_id = get_query_var( 'c', null ); |
| 209 |
|
| 210 |
if ( ! is_null( $comment_id ) ) { |
| 211 |
$comment = \get_comment( $comment_id ); |
| 212 |
|
| 213 |
// Only return local origin comments |
| 214 |
if ( $comment && $comment->user_id ) { |
| 215 |
return $comment_id; |
| 216 |
} |
| 217 |
} |
| 218 |
|
| 219 |
return false; |
| 220 |
} |
| 221 |
|
| 222 |
/** |
| 223 |
* Check for Tombstone Objects |
| 224 |
* |
| 225 |
* @see https://www.w3.org/TR/activitypub/#delete-activity-outbox |
| 226 |
* |
| 227 |
* @param WP_Error $wp_error A WP_Error-Response of an HTTP-Request |
| 228 |
* |
| 229 |
* @return boolean true if HTTP-Code is 410 or 404 |
| 230 |
*/ |
| 231 |
function is_tombstone( $wp_error ) { |
| 232 |
if ( ! is_wp_error( $wp_error ) ) { |
| 233 |
return false; |
| 234 |
} |
| 235 |
|
| 236 |
if ( in_array( (int) $wp_error->get_error_code(), array( 404, 410 ), true ) ) { |
| 237 |
return true; |
| 238 |
} |
| 239 |
|
| 240 |
return false; |
| 241 |
} |
| 242 |
|
| 243 |
/** |
| 244 |
* Get the REST URL relative to this plugin's namespace. |
| 245 |
* |
| 246 |
* @param string $path Optional. REST route path. Otherwise this plugin's namespaced root. |
| 247 |
* |
| 248 |
* @return string REST URL relative to this plugin's namespace. |
| 249 |
*/ |
| 250 |
function get_rest_url_by_path( $path = '' ) { |
| 251 |
// we'll handle the leading slash. |
| 252 |
$path = ltrim( $path, '/' ); |
| 253 |
$namespaced_path = sprintf( '/%s/%s', ACTIVITYPUB_REST_NAMESPACE, $path ); |
| 254 |
return \get_rest_url( null, $namespaced_path ); |
| 255 |
} |
| 256 |
|
| 257 |
/** |
| 258 |
* Convert a string from camelCase to snake_case. |
| 259 |
* |
| 260 |
* @param string $string The string to convert. |
| 261 |
* |
| 262 |
* @return string The converted string. |
| 263 |
*/ |
| 264 |
// phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.stringFound |
| 265 |
function camel_to_snake_case( $string ) { |
| 266 |
return strtolower( preg_replace( '/(?<!^)[A-Z]/', '_$0', $string ) ); |
| 267 |
} |
| 268 |
|
| 269 |
/** |
| 270 |
* Convert a string from snake_case to camelCase. |
| 271 |
* |
| 272 |
* @param string $string The string to convert. |
| 273 |
* |
| 274 |
* @return string The converted string. |
| 275 |
*/ |
| 276 |
// phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.stringFound |
| 277 |
function snake_to_camel_case( $string ) { |
| 278 |
return lcfirst( str_replace( '_', '', ucwords( $string, '_' ) ) ); |
| 279 |
} |
| 280 |
|
| 281 |
/** |
| 282 |
* Escapes a Tag, to be used as a hashtag. |
| 283 |
* |
| 284 |
* @param string $string The string to escape. |
| 285 |
* |
| 286 |
* @return string The escaped hastag. |
| 287 |
*/ |
| 288 |
function esc_hashtag( $string ) { |
| 289 |
|
| 290 |
$hashtag = \wp_specialchars_decode( $string, ENT_QUOTES ); |
| 291 |
// Remove all characters that are not letters, numbers, or underscores. |
| 292 |
$hashtag = \preg_replace( '/emoji-regex(*SKIP)(?!)|[^\p{L}\p{Nd}_]+/u', '_', $hashtag ); |
| 293 |
|
| 294 |
// Capitalize every letter that is preceded by an underscore. |
| 295 |
$hashtag = preg_replace_callback( |
| 296 |
'/_(.)/', |
| 297 |
function ( $matches ) { |
| 298 |
return '' . strtoupper( $matches[1] ); |
| 299 |
}, |
| 300 |
$hashtag |
| 301 |
); |
| 302 |
|
| 303 |
// Add a hashtag to the beginning of the string. |
| 304 |
$hashtag = ltrim( $hashtag, '#' ); |
| 305 |
$hashtag = '#' . $hashtag; |
| 306 |
|
| 307 |
/** |
| 308 |
* Allow defining your own custom hashtag generation rules. |
| 309 |
* |
| 310 |
* @param string $hashtag The hashtag to be returned. |
| 311 |
* @param string $string The original string. |
| 312 |
*/ |
| 313 |
$hashtag = apply_filters( 'activitypub_esc_hashtag', $hashtag, $string ); |
| 314 |
|
| 315 |
return esc_html( $hashtag ); |
| 316 |
} |
| 317 |
|
| 318 |
/** |
| 319 |
* Check if a request is for an ActivityPub request. |
| 320 |
* |
| 321 |
* @return bool False by default. |
| 322 |
*/ |
| 323 |
function is_activitypub_request() { |
| 324 |
global $wp_query; |
| 325 |
|
| 326 |
/* |
| 327 |
* ActivityPub requests are currently only made for |
| 328 |
* author archives, singular posts, and the homepage. |
| 329 |
*/ |
| 330 |
if ( ! \is_author() && ! \is_singular() && ! \is_home() && ! defined( '\REST_REQUEST' ) ) { |
| 331 |
return false; |
| 332 |
} |
| 333 |
|
| 334 |
// Check if the current post type supports ActivityPub. |
| 335 |
if ( \is_singular() ) { |
| 336 |
$queried_object = \get_queried_object(); |
| 337 |
$post_type = \get_post_type( $queried_object ); |
| 338 |
|
| 339 |
if ( ! \post_type_supports( $post_type, 'activitypub' ) ) { |
| 340 |
return false; |
| 341 |
} |
| 342 |
} |
| 343 |
|
| 344 |
// Check if header already sent. |
| 345 |
if ( ! \headers_sent() && ACTIVITYPUB_SEND_VARY_HEADER ) { |
| 346 |
// Send Vary header for Accept header. |
| 347 |
\header( 'Vary: Accept' ); |
| 348 |
} |
| 349 |
|
| 350 |
// One can trigger an ActivityPub request by adding ?activitypub to the URL. |
| 351 |
// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.VariableRedeclaration |
| 352 |
global $wp_query; |
| 353 |
if ( isset( $wp_query->query_vars['activitypub'] ) ) { |
| 354 |
return true; |
| 355 |
} |
| 356 |
|
| 357 |
/* |
| 358 |
* The other (more common) option to make an ActivityPub request |
| 359 |
* is to send an Accept header. |
| 360 |
*/ |
| 361 |
if ( isset( $_SERVER['HTTP_ACCEPT'] ) ) { |
| 362 |
$accept = sanitize_text_field( wp_unslash( $_SERVER['HTTP_ACCEPT'] ) ); |
| 363 |
|
| 364 |
/* |
| 365 |
* $accept can be a single value, or a comma separated list of values. |
| 366 |
* We want to support both scenarios, |
| 367 |
* and return true when the header includes at least one of the following: |
| 368 |
* - application/activity+json |
| 369 |
* - application/ld+json |
| 370 |
* - application/json |
| 371 |
*/ |
| 372 |
if ( preg_match( '/(application\/(ld\+json|activity\+json|json))/i', $accept ) ) { |
| 373 |
return true; |
| 374 |
} |
| 375 |
} |
| 376 |
|
| 377 |
return false; |
| 378 |
} |
| 379 |
|
| 380 |
/** |
| 381 |
* This function checks if a user is disabled for ActivityPub. |
| 382 |
* |
| 383 |
* @param int $user_id The User-ID. |
| 384 |
* |
| 385 |
* @return boolean True if the user is disabled, false otherwise. |
| 386 |
*/ |
| 387 |
function is_user_disabled( $user_id ) { |
| 388 |
$return = false; |
| 389 |
|
| 390 |
switch ( $user_id ) { |
| 391 |
// if the user is the application user, it's always enabled. |
| 392 |
case \Activitypub\Collection\Users::APPLICATION_USER_ID: |
| 393 |
$return = false; |
| 394 |
break; |
| 395 |
// if the user is the blog user, it's only enabled in single-user mode. |
| 396 |
case \Activitypub\Collection\Users::BLOG_USER_ID: |
| 397 |
if ( is_user_type_disabled( 'blog' ) ) { |
| 398 |
$return = true; |
| 399 |
break; |
| 400 |
} |
| 401 |
|
| 402 |
$return = false; |
| 403 |
break; |
| 404 |
// if the user is any other user, it's enabled if it can publish posts. |
| 405 |
default: |
| 406 |
if ( ! \get_user_by( 'id', $user_id ) ) { |
| 407 |
$return = true; |
| 408 |
break; |
| 409 |
} |
| 410 |
|
| 411 |
if ( is_user_type_disabled( 'user' ) ) { |
| 412 |
$return = true; |
| 413 |
break; |
| 414 |
} |
| 415 |
|
| 416 |
if ( ! \user_can( $user_id, 'activitypub' ) ) { |
| 417 |
$return = true; |
| 418 |
break; |
| 419 |
} |
| 420 |
|
| 421 |
$return = false; |
| 422 |
break; |
| 423 |
} |
| 424 |
|
| 425 |
return apply_filters( 'activitypub_is_user_disabled', $return, $user_id ); |
| 426 |
} |
| 427 |
|
| 428 |
/** |
| 429 |
* Checks if a User-Type is disabled for ActivityPub. |
| 430 |
* |
| 431 |
* This function is used to check if the 'blog' or 'user' |
| 432 |
* type is disabled for ActivityPub. |
| 433 |
* |
| 434 |
* @param enum $type Can be 'blog' or 'user'. |
| 435 |
* |
| 436 |
* @return boolean True if the user type is disabled, false otherwise. |
| 437 |
*/ |
| 438 |
function is_user_type_disabled( $type ) { |
| 439 |
switch ( $type ) { |
| 440 |
case 'blog': |
| 441 |
if ( \defined( 'ACTIVITYPUB_SINGLE_USER_MODE' ) ) { |
| 442 |
if ( ACTIVITYPUB_SINGLE_USER_MODE ) { |
| 443 |
$return = false; |
| 444 |
break; |
| 445 |
} |
| 446 |
} |
| 447 |
|
| 448 |
if ( \defined( 'ACTIVITYPUB_DISABLE_BLOG_USER' ) ) { |
| 449 |
$return = ACTIVITYPUB_DISABLE_BLOG_USER; |
| 450 |
break; |
| 451 |
} |
| 452 |
|
| 453 |
if ( '1' !== \get_option( 'activitypub_enable_blog_user', '0' ) ) { |
| 454 |
$return = true; |
| 455 |
break; |
| 456 |
} |
| 457 |
|
| 458 |
$return = false; |
| 459 |
break; |
| 460 |
case 'user': |
| 461 |
if ( \defined( 'ACTIVITYPUB_SINGLE_USER_MODE' ) ) { |
| 462 |
if ( ACTIVITYPUB_SINGLE_USER_MODE ) { |
| 463 |
$return = true; |
| 464 |
break; |
| 465 |
} |
| 466 |
} |
| 467 |
|
| 468 |
if ( \defined( 'ACTIVITYPUB_DISABLE_USER' ) ) { |
| 469 |
$return = ACTIVITYPUB_DISABLE_USER; |
| 470 |
break; |
| 471 |
} |
| 472 |
|
| 473 |
if ( '1' !== \get_option( 'activitypub_enable_users', '1' ) ) { |
| 474 |
$return = true; |
| 475 |
break; |
| 476 |
} |
| 477 |
|
| 478 |
$return = false; |
| 479 |
break; |
| 480 |
default: |
| 481 |
$return = new WP_Error( |
| 482 |
'activitypub_wrong_user_type', |
| 483 |
__( 'Wrong user type', 'activitypub' ), |
| 484 |
array( 'status' => 400 ) |
| 485 |
); |
| 486 |
break; |
| 487 |
} |
| 488 |
|
| 489 |
return apply_filters( 'activitypub_is_user_type_disabled', $return, $type ); |
| 490 |
} |
| 491 |
|
| 492 |
/** |
| 493 |
* Check if the blog is in single-user mode. |
| 494 |
* |
| 495 |
* @return boolean True if the blog is in single-user mode, false otherwise. |
| 496 |
*/ |
| 497 |
function is_single_user() { |
| 498 |
if ( |
| 499 |
false === is_user_type_disabled( 'blog' ) && |
| 500 |
true === is_user_type_disabled( 'user' ) |
| 501 |
) { |
| 502 |
return true; |
| 503 |
} |
| 504 |
|
| 505 |
return false; |
| 506 |
} |
| 507 |
|
| 508 |
/** |
| 509 |
* Check if a site supports the block editor. |
| 510 |
* |
| 511 |
* @return boolean True if the site supports the block editor, false otherwise. |
| 512 |
*/ |
| 513 |
function site_supports_blocks() { |
| 514 |
if ( \version_compare( \get_bloginfo( 'version' ), '5.9', '<' ) ) { |
| 515 |
return false; |
| 516 |
} |
| 517 |
|
| 518 |
if ( ! \function_exists( 'register_block_type_from_metadata' ) ) { |
| 519 |
return false; |
| 520 |
} |
| 521 |
|
| 522 |
/** |
| 523 |
* Allow plugins to disable block editor support, |
| 524 |
* thus disabling blocks registered by the ActivityPub plugin. |
| 525 |
* |
| 526 |
* @param boolean $supports_blocks True if the site supports the block editor, false otherwise. |
| 527 |
*/ |
| 528 |
return apply_filters( 'activitypub_site_supports_blocks', true ); |
| 529 |
} |
| 530 |
|
| 531 |
/** |
| 532 |
* Check if data is valid JSON. |
| 533 |
* |
| 534 |
* @param string $data The data to check. |
| 535 |
* |
| 536 |
* @return boolean True if the data is JSON, false otherwise. |
| 537 |
*/ |
| 538 |
function is_json( $data ) { |
| 539 |
return \is_array( \json_decode( $data, true ) ) ? true : false; |
| 540 |
} |
| 541 |
|
| 542 |
/** |
| 543 |
* Check if a blog is public based on the `blog_public` option |
| 544 |
* |
| 545 |
* @return bollean True if public, false if not |
| 546 |
*/ |
| 547 |
function is_blog_public() { |
| 548 |
return (bool) apply_filters( 'activitypub_is_blog_public', \get_option( 'blog_public', 1 ) ); |
| 549 |
} |
| 550 |
|
| 551 |
/** |
| 552 |
* Sanitize a URL |
| 553 |
* |
| 554 |
* @param string $value The URL to sanitize |
| 555 |
* |
| 556 |
* @return string|null The sanitized URL or null if invalid |
| 557 |
*/ |
| 558 |
function sanitize_url( $value ) { |
| 559 |
if ( filter_var( $value, FILTER_VALIDATE_URL ) === false ) { |
| 560 |
return null; |
| 561 |
} |
| 562 |
|
| 563 |
return esc_url_raw( $value ); |
| 564 |
} |
| 565 |
|
| 566 |
/** |
| 567 |
* Extract recipient URLs from Activity object |
| 568 |
* |
| 569 |
* @param array $data |
| 570 |
* |
| 571 |
* @return array The list of user URLs |
| 572 |
*/ |
| 573 |
function extract_recipients_from_activity( $data ) { |
| 574 |
$recipient_items = array(); |
| 575 |
|
| 576 |
foreach ( array( 'to', 'bto', 'cc', 'bcc', 'audience' ) as $i ) { |
| 577 |
if ( array_key_exists( $i, $data ) ) { |
| 578 |
if ( is_array( $data[ $i ] ) ) { |
| 579 |
$recipient = $data[ $i ]; |
| 580 |
} else { |
| 581 |
$recipient = array( $data[ $i ] ); |
| 582 |
} |
| 583 |
$recipient_items = array_merge( $recipient_items, $recipient ); |
| 584 |
} |
| 585 |
|
| 586 |
if ( is_array( $data['object'] ) && array_key_exists( $i, $data['object'] ) ) { |
| 587 |
if ( is_array( $data['object'][ $i ] ) ) { |
| 588 |
$recipient = $data['object'][ $i ]; |
| 589 |
} else { |
| 590 |
$recipient = array( $data['object'][ $i ] ); |
| 591 |
} |
| 592 |
$recipient_items = array_merge( $recipient_items, $recipient ); |
| 593 |
} |
| 594 |
} |
| 595 |
|
| 596 |
$recipients = array(); |
| 597 |
|
| 598 |
// flatten array |
| 599 |
foreach ( $recipient_items as $recipient ) { |
| 600 |
if ( is_array( $recipient ) ) { |
| 601 |
// check if recipient is an object |
| 602 |
if ( array_key_exists( 'id', $recipient ) ) { |
| 603 |
$recipients[] = $recipient['id']; |
| 604 |
} |
| 605 |
} else { |
| 606 |
$recipients[] = $recipient; |
| 607 |
} |
| 608 |
} |
| 609 |
|
| 610 |
return array_unique( $recipients ); |
| 611 |
} |
| 612 |
|
| 613 |
/** |
| 614 |
* Check if passed Activity is Public |
| 615 |
* |
| 616 |
* @param array $data The Activity object as array |
| 617 |
* |
| 618 |
* @return boolean True if public, false if not |
| 619 |
*/ |
| 620 |
function is_activity_public( $data ) { |
| 621 |
$recipients = extract_recipients_from_activity( $data ); |
| 622 |
|
| 623 |
return in_array( 'https://www.w3.org/ns/activitystreams#Public', $recipients, true ); |
| 624 |
} |
| 625 |
|
| 626 |
/** |
| 627 |
* Get active users based on a given duration |
| 628 |
* |
| 629 |
* @param int $duration The duration to check in month(s) |
| 630 |
* |
| 631 |
* @return int The number of active users |
| 632 |
*/ |
| 633 |
function get_active_users( $duration = 1 ) { |
| 634 |
|
| 635 |
$duration = intval( $duration ); |
| 636 |
$transient_key = sprintf( 'monthly_active_users_%d', $duration ); |
| 637 |
$count = get_transient( $transient_key ); |
| 638 |
|
| 639 |
if ( false === $count ) { |
| 640 |
global $wpdb; |
| 641 |
$query = "SELECT COUNT( DISTINCT post_author ) FROM {$wpdb->posts} WHERE post_type = 'post' AND post_status = 'publish' AND post_date <= DATE_SUB( NOW(), INTERVAL %d MONTH )"; |
| 642 |
$query = $wpdb->prepare( $query, $duration ); |
| 643 |
$count = $wpdb->get_var( $query ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching |
| 644 |
|
| 645 |
set_transient( $transient_key, $count, DAY_IN_SECONDS ); |
| 646 |
} |
| 647 |
|
| 648 |
// if 0 authors where active |
| 649 |
if ( 0 === $count ) { |
| 650 |
return 0; |
| 651 |
} |
| 652 |
|
| 653 |
// if single user mode |
| 654 |
if ( is_single_user() ) { |
| 655 |
return 1; |
| 656 |
} |
| 657 |
|
| 658 |
// if blog user is disabled |
| 659 |
if ( is_user_disabled( Users::BLOG_USER_ID ) ) { |
| 660 |
return (int) $count; |
| 661 |
} |
| 662 |
|
| 663 |
// also count blog user |
| 664 |
return (int) $count + 1; |
| 665 |
} |
| 666 |
|
| 667 |
/** |
| 668 |
* Get the total number of users |
| 669 |
* |
| 670 |
* @return int The total number of users |
| 671 |
*/ |
| 672 |
function get_total_users() { |
| 673 |
// if single user mode |
| 674 |
if ( is_single_user() ) { |
| 675 |
return 1; |
| 676 |
} |
| 677 |
|
| 678 |
$users = \get_users( |
| 679 |
array( |
| 680 |
'capability__in' => array( 'activitypub' ), |
| 681 |
) |
| 682 |
); |
| 683 |
|
| 684 |
if ( is_array( $users ) ) { |
| 685 |
$users = count( $users ); |
| 686 |
} else { |
| 687 |
$users = 1; |
| 688 |
} |
| 689 |
|
| 690 |
// if blog user is disabled |
| 691 |
if ( is_user_disabled( Users::BLOG_USER_ID ) ) { |
| 692 |
return (int) $users; |
| 693 |
} |
| 694 |
|
| 695 |
return (int) $users + 1; |
| 696 |
} |
| 697 |
|
| 698 |
/** |
| 699 |
* Examine a comment ID and look up an existing comment it represents. |
| 700 |
* |
| 701 |
* @param string $id ActivityPub object ID (usually a URL) to check. |
| 702 |
* |
| 703 |
* @return int|boolean Comment ID, or false on failure. |
| 704 |
*/ |
| 705 |
function object_id_to_comment( $id ) { |
| 706 |
return Comment::object_id_to_comment( $id ); |
| 707 |
} |
| 708 |
|
| 709 |
/** |
| 710 |
* Verify if URL is a local comment, |
| 711 |
* Or if it is a previously received remote comment |
| 712 |
* (For threading comments locally) |
| 713 |
* |
| 714 |
* @param string $url The URL to check. |
| 715 |
* |
| 716 |
* @return int comment_ID or null if not found |
| 717 |
*/ |
| 718 |
function url_to_commentid( $url ) { |
| 719 |
return Comment::url_to_commentid( $url ); |
| 720 |
} |
| 721 |
|
| 722 |
/** |
| 723 |
* Get the URI of an ActivityPub object |
| 724 |
* |
| 725 |
* @param array $object The ActivityPub object |
| 726 |
* |
| 727 |
* @return string The URI of the ActivityPub object |
| 728 |
*/ |
| 729 |
function object_to_uri( $object ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.objectFound |
| 730 |
// check if it is already simple |
| 731 |
if ( ! $object || is_string( $object ) ) { |
| 732 |
return $object; |
| 733 |
} |
| 734 |
|
| 735 |
// check if it is a list, then take first item |
| 736 |
// this plugin does not support collections |
| 737 |
if ( array_is_list( $object ) ) { |
| 738 |
$object = $object[0]; |
| 739 |
} |
| 740 |
|
| 741 |
// check if it is simplified now |
| 742 |
if ( is_string( $object ) ) { |
| 743 |
return $object; |
| 744 |
} |
| 745 |
|
| 746 |
$type = 'Object'; |
| 747 |
if ( isset( $object['type'] ) ) { |
| 748 |
$type = $object['type']; |
| 749 |
} |
| 750 |
|
| 751 |
// return part of Object that makes most sense |
| 752 |
switch ( $type ) { |
| 753 |
case 'Link': |
| 754 |
$object = $object['href']; |
| 755 |
break; |
| 756 |
default: |
| 757 |
$object = $object['id']; |
| 758 |
break; |
| 759 |
} |
| 760 |
|
| 761 |
return $object; |
| 762 |
} |
| 763 |
|
| 764 |
/** |
| 765 |
* Check if a comment should be federated. |
| 766 |
* |
| 767 |
* We consider a comment should be federated if it is authored by a user that is |
| 768 |
* not disabled for federation and if it is a reply directly to the post or to a |
| 769 |
* federated comment. |
| 770 |
* |
| 771 |
* @param mixed $comment Comment object or ID. |
| 772 |
* |
| 773 |
* @return boolean True if the comment should be federated, false otherwise. |
| 774 |
*/ |
| 775 |
function should_comment_be_federated( $comment ) { |
| 776 |
return Comment::should_be_federated( $comment ); |
| 777 |
} |
| 778 |
|
| 779 |
/** |
| 780 |
* Check if a comment was federated. |
| 781 |
* |
| 782 |
* This function checks if a comment was federated via ActivityPub. |
| 783 |
* |
| 784 |
* @param mixed $comment Comment object or ID. |
| 785 |
* |
| 786 |
* @return boolean True if the comment was federated, false otherwise. |
| 787 |
*/ |
| 788 |
function was_comment_sent( $comment ) { |
| 789 |
return Comment::was_sent( $comment ); |
| 790 |
} |
| 791 |
|
| 792 |
/** |
| 793 |
* Check if a comment is federated. |
| 794 |
* |
| 795 |
* We consider a comment federated if comment was received via ActivityPub. |
| 796 |
* |
| 797 |
* Use this function to check if it is comment that was received via ActivityPub. |
| 798 |
* |
| 799 |
* @param mixed $comment Comment object or ID. |
| 800 |
* |
| 801 |
* @return boolean True if the comment is federated, false otherwise. |
| 802 |
*/ |
| 803 |
function was_comment_received( $comment ) { |
| 804 |
return Comment::was_received( $comment ); |
| 805 |
} |
| 806 |
|
| 807 |
/** |
| 808 |
* Check if a comment is local only. |
| 809 |
* |
| 810 |
* This function checks if a comment is local only and was not sent or received via ActivityPub. |
| 811 |
* |
| 812 |
* @param mixed $comment Comment object or ID. |
| 813 |
* |
| 814 |
* @return boolean True if the comment is local only, false otherwise. |
| 815 |
*/ |
| 816 |
function is_local_comment( $comment ) { |
| 817 |
return Comment::is_local( $comment ); |
| 818 |
} |
| 819 |
|
| 820 |
/** |
| 821 |
* Mark a WordPress object as federated. |
| 822 |
* |
| 823 |
* @param WP_Comment|WP_Post|mixed $wp_object |
| 824 |
* |
| 825 |
* @return void |
| 826 |
*/ |
| 827 |
function set_wp_object_state( $wp_object, $state ) { |
| 828 |
$meta_key = 'activitypub_status'; |
| 829 |
|
| 830 |
if ( $wp_object instanceof \WP_Post ) { |
| 831 |
\update_post_meta( $wp_object->ID, $meta_key, $state ); |
| 832 |
} elseif ( $wp_object instanceof \WP_Comment ) { |
| 833 |
\update_comment_meta( $wp_object->comment_ID, $meta_key, $state ); |
| 834 |
} else { |
| 835 |
\apply_filters( 'activitypub_mark_wp_object_as_federated', $wp_object ); |
| 836 |
} |
| 837 |
} |
| 838 |
|
| 839 |
/** |
| 840 |
* Get the federation state of a WordPress object. |
| 841 |
* |
| 842 |
* @param WP_Comment|WP_Post|mixed $wp_object |
| 843 |
* |
| 844 |
* @return string|false The state of the object or false if not found. |
| 845 |
*/ |
| 846 |
function get_wp_object_state( $wp_object ) { |
| 847 |
$meta_key = 'activitypub_status'; |
| 848 |
|
| 849 |
if ( $wp_object instanceof \WP_Post ) { |
| 850 |
return \get_post_meta( $wp_object->ID, $meta_key, true ); |
| 851 |
} elseif ( $wp_object instanceof \WP_Comment ) { |
| 852 |
return \get_comment_meta( $wp_object->comment_ID, $meta_key, true ); |
| 853 |
} else { |
| 854 |
return \apply_filters( 'activitypub_get_wp_object_state', false, $wp_object ); |
| 855 |
} |
| 856 |
} |
| 857 |
|
| 858 |
/** |
| 859 |
* Get the description of a post type. |
| 860 |
* |
| 861 |
* Set some default descriptions for the default post types. |
| 862 |
* |
| 863 |
* @param WP_Post_Type $post_type The post type object. |
| 864 |
* |
| 865 |
* @return string The description of the post type. |
| 866 |
*/ |
| 867 |
function get_post_type_description( $post_type ) { |
| 868 |
$description = ''; |
| 869 |
|
| 870 |
switch ( $post_type->name ) { |
| 871 |
case 'post': |
| 872 |
$description = ''; |
| 873 |
break; |
| 874 |
case 'page': |
| 875 |
$description = ''; |
| 876 |
break; |
| 877 |
case 'attachment': |
| 878 |
$description = ' - ' . __( 'The attachments that you have uploaded to a post (images, videos, documents or other files).', 'activitypub' ); |
| 879 |
break; |
| 880 |
default: |
| 881 |
if ( ! empty( $post_type->description ) ) { |
| 882 |
$description = ' - ' . $post_type->description; |
| 883 |
} |
| 884 |
} |
| 885 |
|
| 886 |
return apply_filters( 'activitypub_post_type_description', $description, $post_type->name, $post_type ); |
| 887 |
} |
| 888 |
|
| 889 |
/** |
| 890 |
* Get the masked WordPress version to only show the major and minor version. |
| 891 |
* |
| 892 |
* @return string The masked version. |
| 893 |
*/ |
| 894 |
function get_masked_wp_version() { |
| 895 |
// only show the major and minor version |
| 896 |
$version = get_bloginfo( 'version' ); |
| 897 |
// strip the RC or beta part |
| 898 |
$version = preg_replace( '/-.*$/', '', $version ); |
| 899 |
$version = explode( '.', $version ); |
| 900 |
$version = array_slice( $version, 0, 2 ); |
| 901 |
|
| 902 |
return implode( '.', $version ); |
| 903 |
} |
| 904 |
|
| 905 |
/** |
| 906 |
* Get the enclosures of a post. |
| 907 |
* |
| 908 |
* @param int $post_id The post ID. |
| 909 |
* |
| 910 |
* @return array The enclosures. |
| 911 |
*/ |
| 912 |
function get_enclosures( $post_id ) { |
| 913 |
$enclosures = get_post_meta( $post_id, 'enclosure' ); |
| 914 |
|
| 915 |
if ( ! $enclosures ) { |
| 916 |
return array(); |
| 917 |
} |
| 918 |
|
| 919 |
$enclosures = array_map( |
| 920 |
function ( $enclosure ) { |
| 921 |
$attributes = explode( "\n", $enclosure ); |
| 922 |
|
| 923 |
if ( ! isset( $attributes[0] ) || ! \wp_http_validate_url( $attributes[0] ) ) { |
| 924 |
return false; |
| 925 |
} |
| 926 |
|
| 927 |
return array( |
| 928 |
'url' => $attributes[0], |
| 929 |
'length' => isset( $attributes[1] ) ? trim( $attributes[1] ) : null, |
| 930 |
'mediaType' => isset( $attributes[2] ) ? trim( $attributes[2] ) : null, |
| 931 |
); |
| 932 |
}, |
| 933 |
$enclosures |
| 934 |
); |
| 935 |
|
| 936 |
return array_filter( $enclosures ); |
| 937 |
} |
| 938 |
|
| 939 |
/** |
| 940 |
* Retrieves the IDs of the ancestors of a comment. |
| 941 |
* |
| 942 |
* Adaption of `get_post_ancestors` from WordPress core. |
| 943 |
* |
| 944 |
* @see https://developer.wordpress.org/reference/functions/get_post_ancestors/ |
| 945 |
* |
| 946 |
* @param int|WP_Comment $comment Comment ID or comment object. |
| 947 |
* |
| 948 |
* @return WP_Comment[] Array of ancestor comments or empty array if there are none. |
| 949 |
*/ |
| 950 |
function get_comment_ancestors( $comment ) { |
| 951 |
$comment = \get_comment( $comment ); |
| 952 |
|
| 953 |
// phpcs:ignore Universal.Operators.StrictComparisons.LooseEqual |
| 954 |
if ( ! $comment || empty( $comment->comment_parent ) || $comment->comment_parent == $comment->comment_ID ) { |
| 955 |
return array(); |
| 956 |
} |
| 957 |
|
| 958 |
$ancestors = array(); |
| 959 |
|
| 960 |
$id = (int) $comment->comment_parent; |
| 961 |
$ancestors[] = $id; |
| 962 |
|
| 963 |
// phpcs:ignore Generic.CodeAnalysis.AssignmentInCondition.FoundInWhileCondition |
| 964 |
while ( $id > 0 ) { |
| 965 |
$ancestor = \get_comment( $id ); |
| 966 |
$parent_id = (int) $ancestor->comment_parent; |
| 967 |
|
| 968 |
// Loop detection: If the ancestor has been seen before, break. |
| 969 |
if ( empty( $parent_id ) || ( $parent_id === (int) $comment->comment_ID ) || in_array( $parent_id, $ancestors, true ) ) { |
| 970 |
break; |
| 971 |
} |
| 972 |
|
| 973 |
$id = $parent_id; |
| 974 |
$ancestors[] = $id; |
| 975 |
} |
| 976 |
|
| 977 |
return $ancestors; |
| 978 |
} |
| 979 |
|
| 980 |
/** |
| 981 |
* Change the display of large numbers on the site. |
| 982 |
* |
| 983 |
* @author Jeremy Herve |
| 984 |
* |
| 985 |
* @see https://wordpress.org/support/topic/abbreviate-numbers-with-k/ |
| 986 |
* |
| 987 |
* @param string $formatted Converted number in string format. |
| 988 |
* @param float $number The number to convert based on locale. |
| 989 |
* @param int $decimals Precision of the number of decimal places. |
| 990 |
* |
| 991 |
* @return string Converted number in string format. |
| 992 |
*/ |
| 993 |
function custom_large_numbers( $formatted, $number, $decimals ) { |
| 994 |
global $wp_locale; |
| 995 |
|
| 996 |
$decimals = 0; |
| 997 |
$decimal_point = '.'; |
| 998 |
$thousands_sep = ','; |
| 999 |
|
| 1000 |
if ( isset( $wp_locale ) ) { |
| 1001 |
$decimals = (int) $wp_locale->number_format['decimal_point']; |
| 1002 |
$decimal_point = $wp_locale->number_format['decimal_point']; |
| 1003 |
$thousands_sep = $wp_locale->number_format['thousands_sep']; |
| 1004 |
} |
| 1005 |
|
| 1006 |
if ( $number < 1000 ) { // any number less than a Thousand. |
| 1007 |
return \number_format( $number, $decimals, $decimal_point, $thousands_sep ); |
| 1008 |
} elseif ( $number < 1000000 ) { // any number less than a million |
| 1009 |
return \number_format( $number / 1000, $decimals, $decimal_point, $thousands_sep ) . 'K'; |
| 1010 |
} elseif ( $number < 1000000000 ) { // any number less than a billion |
| 1011 |
return \number_format( $number / 1000000, $decimals, $decimal_point, $thousands_sep ) . 'M'; |
| 1012 |
} else { // at least a billion |
| 1013 |
return \number_format( $number / 1000000000, $decimals, $decimal_point, $thousands_sep ) . 'B'; |
| 1014 |
} |
| 1015 |
|
| 1016 |
// Default fallback. We should not get here. |
| 1017 |
return $formatted; |
| 1018 |
} |
| 1019 |
|
| 1020 |
/** |
| 1021 |
* Registers a ActivityPub comment type. |
| 1022 |
* |
| 1023 |
* |
| 1024 |
* @param string $comment_type Key for comment type. |
| 1025 |
* @param array $args Arguments. |
| 1026 |
* |
| 1027 |
* @return array The registered Activitypub comment type. |
| 1028 |
*/ |
| 1029 |
function register_comment_type( $comment_type, $args = array() ) { |
| 1030 |
global $activitypub_comment_types; |
| 1031 |
|
| 1032 |
if ( ! is_array( $activitypub_comment_types ) ) { |
| 1033 |
$activitypub_comment_types = array(); |
| 1034 |
} |
| 1035 |
|
| 1036 |
// Sanitize comment type name. |
| 1037 |
$comment_type = sanitize_key( $comment_type ); |
| 1038 |
|
| 1039 |
$activitypub_comment_types[ $comment_type ] = $args; |
| 1040 |
|
| 1041 |
/** |
| 1042 |
* Fires after a ActivityPub comment type is registered. |
| 1043 |
* |
| 1044 |
* |
| 1045 |
* @param string $comment_type Comment type. |
| 1046 |
* @param array $args Arguments used to register the comment type. |
| 1047 |
*/ |
| 1048 |
do_action( 'activitypub_registered_comment_type', $comment_type, $args ); |
| 1049 |
|
| 1050 |
return $args; |
| 1051 |
} |
| 1052 |
|
| 1053 |
/** |
| 1054 |
* Normalize a URL. |
| 1055 |
* |
| 1056 |
* @param string $url The URL. |
| 1057 |
* |
| 1058 |
* @return string The normalized URL. |
| 1059 |
*/ |
| 1060 |
function normalize_url( $url ) { |
| 1061 |
$url = \untrailingslashit( $url ); |
| 1062 |
$url = \str_replace( 'https://', '', $url ); |
| 1063 |
$url = \str_replace( 'http://', '', $url ); |
| 1064 |
$url = \str_replace( 'www.', '', $url ); |
| 1065 |
|
| 1066 |
return $url; |
| 1067 |
} |
| 1068 |
|
| 1069 |
/** |
| 1070 |
* Normalize a host. |
| 1071 |
* |
| 1072 |
* @param string $host The host. |
| 1073 |
* |
| 1074 |
* @return string The normalized host. |
| 1075 |
*/ |
| 1076 |
function normalize_host( $host ) { |
| 1077 |
return \str_replace( 'www.', '', $host ); |
| 1078 |
} |
| 1079 |
|
| 1080 |
/** |
| 1081 |
* Get the reply intent URI. |
| 1082 |
* |
| 1083 |
* @return string The reply intent URI. |
| 1084 |
*/ |
| 1085 |
function get_reply_intent_uri() { |
| 1086 |
return sprintf( |
| 1087 |
'javascript:(()=>{window.open(\'%s\'+encodeURIComponent(window.location.href));})();', |
| 1088 |
esc_url( \admin_url( 'post-new.php?in_reply_to=' ) ) |
| 1089 |
); |
| 1090 |
} |
| 1091 |
|
| 1092 |
/** |
| 1093 |
* Replace content with links, mentions or hashtags by Regex callback and not affect protected tags. |
| 1094 |
* |
| 1095 |
* @param $content string The content that should be changed |
| 1096 |
* @param $regex string The regex to use |
| 1097 |
* @param $regex_callback callable Callback for replacement logic |
| 1098 |
* |
| 1099 |
* @return string The content with links, mentions, hashtags, etc. |
| 1100 |
*/ |
| 1101 |
function enrich_content_data( $content, $regex, $regex_callback ) { |
| 1102 |
// small protection against execution timeouts: limit to 1 MB |
| 1103 |
if ( mb_strlen( $content ) > MB_IN_BYTES ) { |
| 1104 |
return $content; |
| 1105 |
} |
| 1106 |
$tag_stack = array(); |
| 1107 |
$protected_tags = array( |
| 1108 |
'pre', |
| 1109 |
'code', |
| 1110 |
'textarea', |
| 1111 |
'style', |
| 1112 |
'a', |
| 1113 |
); |
| 1114 |
$content_with_links = ''; |
| 1115 |
$in_protected_tag = false; |
| 1116 |
foreach ( wp_html_split( $content ) as $chunk ) { |
| 1117 |
if ( preg_match( '#^<!--[\s\S]*-->$#i', $chunk, $m ) ) { |
| 1118 |
$content_with_links .= $chunk; |
| 1119 |
continue; |
| 1120 |
} |
| 1121 |
|
| 1122 |
if ( preg_match( '#^<(/)?([a-z-]+)\b[^>]*>$#i', $chunk, $m ) ) { |
| 1123 |
$tag = strtolower( $m[2] ); |
| 1124 |
if ( '/' === $m[1] ) { |
| 1125 |
// Closing tag. |
| 1126 |
$i = array_search( $tag, $tag_stack, true ); |
| 1127 |
// We can only remove the tag from the stack if it is in the stack. |
| 1128 |
if ( false !== $i ) { |
| 1129 |
$tag_stack = array_slice( $tag_stack, 0, $i ); |
| 1130 |
} |
| 1131 |
} else { |
| 1132 |
// Opening tag, add it to the stack. |
| 1133 |
$tag_stack[] = $tag; |
| 1134 |
} |
| 1135 |
|
| 1136 |
// If we're in a protected tag, the tag_stack contains at least one protected tag string. |
| 1137 |
// The protected tag state can only change when we encounter a start or end tag. |
| 1138 |
$in_protected_tag = array_intersect( $tag_stack, $protected_tags ); |
| 1139 |
|
| 1140 |
// Never inspect tags. |
| 1141 |
$content_with_links .= $chunk; |
| 1142 |
continue; |
| 1143 |
} |
| 1144 |
|
| 1145 |
if ( $in_protected_tag ) { |
| 1146 |
// Don't inspect a chunk inside an inspected tag. |
| 1147 |
$content_with_links .= $chunk; |
| 1148 |
continue; |
| 1149 |
} |
| 1150 |
|
| 1151 |
// Only reachable when there is no protected tag in the stack. |
| 1152 |
$content_with_links .= \preg_replace_callback( $regex, $regex_callback, $chunk ); |
| 1153 |
} |
| 1154 |
|
| 1155 |
return $content_with_links; |
| 1156 |
} |
| 1157 |
|
| 1158 |
/** |
| 1159 |
* Generate a summary of a post. |
| 1160 |
* |
| 1161 |
* This function generates a summary of a post by extracting: |
| 1162 |
* |
| 1163 |
* 1. The post excerpt if it exists. |
| 1164 |
* 2. The first part of the post content if it contains the <!--more--> tag. |
| 1165 |
* 3. An excerpt of the post content if it is longer than the specified length. |
| 1166 |
* |
| 1167 |
* @param int|WP_Post $post The post ID or post object. |
| 1168 |
* @param integer $length The maximum length of the summary. |
| 1169 |
* Default is 500. It will ne ignored if the post excerpt |
| 1170 |
* and the content above the <!--more--> tag. |
| 1171 |
* |
| 1172 |
* @return string The generated post summary. |
| 1173 |
*/ |
| 1174 |
function generate_post_summary( $post, $length = 500 ) { |
| 1175 |
$post = get_post( $post ); |
| 1176 |
|
| 1177 |
if ( ! $post ) { |
| 1178 |
return ''; |
| 1179 |
} |
| 1180 |
|
| 1181 |
$content = \sanitize_post_field( 'post_excerpt', $post->post_excerpt, $post->ID ); |
| 1182 |
|
| 1183 |
if ( $content ) { |
| 1184 |
return \apply_filters( 'the_excerpt', $content ); |
| 1185 |
} |
| 1186 |
|
| 1187 |
$content = \sanitize_post_field( 'post_content', $post->post_content, $post->ID ); |
| 1188 |
$content_parts = \get_extended( $content ); |
| 1189 |
|
| 1190 |
$excerpt_more = \apply_filters( 'activitypub_excerpt_more', '[…]' ); |
| 1191 |
$length = $length - strlen( $excerpt_more ); |
| 1192 |
|
| 1193 |
// Check for the <!--more--> tag. |
| 1194 |
if ( |
| 1195 |
! empty( $content_parts['extended'] ) && |
| 1196 |
! empty( $content_parts['main'] ) |
| 1197 |
) { |
| 1198 |
$content = $content_parts['main'] . ' ' . $excerpt_more; |
| 1199 |
$length = null; |
| 1200 |
} |
| 1201 |
|
| 1202 |
$content = \html_entity_decode( $content ); |
| 1203 |
$content = \wp_strip_all_tags( $content ); |
| 1204 |
$content = \trim( $content ); |
| 1205 |
$content = \preg_replace( '/\R+/m', "\n\n", $content ); |
| 1206 |
$content = \preg_replace( '/[\r\t]/', '', $content ); |
| 1207 |
|
| 1208 |
if ( $length && \strlen( $content ) > $length ) { |
| 1209 |
$content = \wordwrap( $content, $length, '</activitypub-summary>' ); |
| 1210 |
$content = \explode( '</activitypub-summary>', $content, 2 ); |
| 1211 |
$content = $content[0] . ' ' . $excerpt_more; |
| 1212 |
} |
| 1213 |
|
| 1214 |
/* Removed until this is merged: https://github.com/mastodon/mastodon/pull/28629 |
| 1215 |
return \apply_filters( 'the_excerpt', $content ); |
| 1216 |
*/ |
| 1217 |
return $content; |
| 1218 |
} |
| 1219 |
|
