| 1 |
<?php |
| 2 |
/** |
| 3 |
* ActivityPub Dispatcher Class. |
| 4 |
* |
| 5 |
* @package Activitypub |
| 6 |
*/ |
| 7 |
|
| 8 |
namespace Activitypub; |
| 9 |
|
| 10 |
use Activitypub\Activity\Activity; |
| 11 |
use Activitypub\Collection\Followers; |
| 12 |
use Activitypub\Collection\Outbox; |
| 13 |
|
| 14 |
/** |
| 15 |
* ActivityPub Dispatcher Class. |
| 16 |
* |
| 17 |
* @author Matthias Pfefferle |
| 18 |
* |
| 19 |
* @see https://www.w3.org/TR/activitypub/ |
| 20 |
*/ |
| 21 |
class Dispatcher { |
| 22 |
/** |
| 23 |
* Batch size. |
| 24 |
* |
| 25 |
* @deprecated 7.6.0 Use {@see Dispatcher::get_batch_size()}. |
| 26 |
* |
| 27 |
* @var int |
| 28 |
*/ |
| 29 |
public static $batch_size = ACTIVITYPUB_OUTBOX_PROCESSING_BATCH_SIZE; |
| 30 |
|
| 31 |
/** |
| 32 |
* Initialize the class, registering WordPress hooks. |
| 33 |
*/ |
| 34 |
public static function init() { |
| 35 |
\add_action( 'activitypub_process_outbox', array( self::class, 'process_outbox' ) ); |
| 36 |
|
| 37 |
\add_action( 'post_activitypub_add_to_outbox', array( self::class, 'fire_outbox_handlers' ), 5, 2 ); |
| 38 |
\add_action( 'post_activitypub_add_to_outbox', array( self::class, 'send_immediate_accept' ), 10, 2 ); |
| 39 |
|
| 40 |
// Default filters to add Inboxes to sent to. |
| 41 |
\add_filter( 'activitypub_additional_inboxes', array( self::class, 'add_inboxes_by_mentioned_actors' ), 10, 3 ); |
| 42 |
\add_filter( 'activitypub_additional_inboxes', array( self::class, 'add_inboxes_of_replied_urls' ), 10, 3 ); |
| 43 |
\add_filter( 'activitypub_additional_inboxes', array( self::class, 'add_inboxes_of_relays' ), 10, 3 ); |
| 44 |
|
| 45 |
Scheduler::register_async_batch_callback( 'activitypub_send_activity', array( self::class, 'send_to_followers' ) ); |
| 46 |
Scheduler::register_async_batch_callback( 'activitypub_retry_activity', array( self::class, 'retry_send_to_followers' ) ); |
| 47 |
} |
| 48 |
|
| 49 |
/** |
| 50 |
* Get the batch size for processing outbox items. |
| 51 |
* |
| 52 |
* @return int The batch size. |
| 53 |
*/ |
| 54 |
public static function get_batch_size() { |
| 55 |
/** |
| 56 |
* Filters the batch size for processing outbox items. |
| 57 |
* |
| 58 |
* @param int $batch_size The batch size. Default ACTIVITYPUB_OUTBOX_PROCESSING_BATCH_SIZE. |
| 59 |
*/ |
| 60 |
return \apply_filters( 'activitypub_dispatcher_batch_size', ACTIVITYPUB_OUTBOX_PROCESSING_BATCH_SIZE ); |
| 61 |
} |
| 62 |
|
| 63 |
/** |
| 64 |
* Get the maximum number of retry attempts. |
| 65 |
* |
| 66 |
* @return int The maximum number of retry attempts. |
| 67 |
*/ |
| 68 |
public static function get_retry_max_attempts() { |
| 69 |
/** |
| 70 |
* Filters the maximum number of retry attempts. |
| 71 |
* |
| 72 |
* @param int $retry_max_attempts The maximum number of retry attempts. Default ACTIVITYPUB_OUTBOX_RETRY_MAX_ATTEMPTS. |
| 73 |
*/ |
| 74 |
return \apply_filters( 'activitypub_dispatcher_retry_max_attempts', 3 ); |
| 75 |
} |
| 76 |
|
| 77 |
/** |
| 78 |
* Get the retry delay unit (in seconds). |
| 79 |
* |
| 80 |
* Used to calculate exponential backoff: time() + (attempt * attempt * retry_delay_unit). |
| 81 |
* |
| 82 |
* @return int The retry delay unit in seconds. |
| 83 |
*/ |
| 84 |
public static function get_retry_delay() { |
| 85 |
/** |
| 86 |
* Filters the retry delay unit (in seconds). |
| 87 |
* |
| 88 |
* Used to calculate exponential backoff: time() + (attempt * attempt * retry_delay_unit). |
| 89 |
* |
| 90 |
* @param int $retry_delay_unit The retry delay unit in seconds. Default ACTIVITYPUB_OUTBOX_RETRY_DELAY_UNIT. |
| 91 |
*/ |
| 92 |
return \apply_filters( 'activitypub_dispatcher_retry_delay', HOUR_IN_SECONDS ); |
| 93 |
} |
| 94 |
|
| 95 |
/** |
| 96 |
* Get the error codes that qualify for a retry. |
| 97 |
* |
| 98 |
* @see https://github.com/tfredrich/RestApiTutorial.com/blob/fd08b0f67f07450521d143b123cd6e1846cb2e3b/content/advanced/responses/retries.md |
| 99 |
* |
| 100 |
* @return int[] The error codes. |
| 101 |
*/ |
| 102 |
public static function get_retry_error_codes() { |
| 103 |
/** |
| 104 |
* Filters the error codes that qualify for a retry. |
| 105 |
* |
| 106 |
* @param int[] $retry_error_codes The error codes. Default array( 408, 429, 500, 502, 503, 504 ). |
| 107 |
*/ |
| 108 |
return \apply_filters( 'activitypub_dispatcher_retry_error_codes', ACTIVITYPUB_RETRY_ERROR_CODES ); |
| 109 |
} |
| 110 |
|
| 111 |
/** |
| 112 |
* Process the outbox. |
| 113 |
* |
| 114 |
* @param int $id The outbox ID. |
| 115 |
*/ |
| 116 |
public static function process_outbox( $id ) { |
| 117 |
$outbox_item = \get_post( $id ); |
| 118 |
|
| 119 |
// If the activity is not a post, return. |
| 120 |
if ( ! $outbox_item ) { |
| 121 |
return; |
| 122 |
} |
| 123 |
|
| 124 |
$type = \get_post_meta( $outbox_item->ID, '_activitypub_activity_type', true ); |
| 125 |
$actor = Outbox::get_actor( $outbox_item ); |
| 126 |
if ( \is_wp_error( $actor ) && 'Delete' !== $type ) { |
| 127 |
// If the actor is not found, publish the post and don't try again. |
| 128 |
\wp_publish_post( $outbox_item ); |
| 129 |
return; |
| 130 |
} |
| 131 |
|
| 132 |
$activity = Outbox::get_activity( $outbox_item ); |
| 133 |
|
| 134 |
// Send to mentioned and replied-to users. Everyone other than followers. |
| 135 |
self::send_to_additional_inboxes( $activity, $outbox_item->post_author, $outbox_item ); |
| 136 |
|
| 137 |
if ( self::should_send_to_followers( $activity, $actor, $outbox_item ) ) { |
| 138 |
\do_action( |
| 139 |
'activitypub_send_activity', |
| 140 |
$outbox_item->ID, |
| 141 |
self::get_batch_size(), |
| 142 |
\get_post_meta( $outbox_item->ID, '_activitypub_outbox_offset', true ) ?: 0 // phpcs:ignore |
| 143 |
); |
| 144 |
} else { |
| 145 |
// No followers to process for this update. We're done. |
| 146 |
\wp_publish_post( $outbox_item ); |
| 147 |
\delete_post_meta( $outbox_item->ID, '_activitypub_outbox_offset' ); |
| 148 |
} |
| 149 |
} |
| 150 |
|
| 151 |
/** |
| 152 |
* Asynchronously runs batch processing routines. |
| 153 |
* |
| 154 |
* @param int $outbox_item_id The Outbox item ID. |
| 155 |
* @param int|null $batch_size Optional. The batch size. Default null (uses filtered batch size). |
| 156 |
* @param int $offset Optional. The offset. Default 0. |
| 157 |
* |
| 158 |
* @return array|void The next batch of followers to process, or void if done. |
| 159 |
*/ |
| 160 |
public static function send_to_followers( $outbox_item_id, $batch_size = ACTIVITYPUB_OUTBOX_PROCESSING_BATCH_SIZE, $offset = 0 ) { |
| 161 |
if ( null === $batch_size ) { |
| 162 |
$batch_size = self::get_batch_size(); |
| 163 |
} |
| 164 |
|
| 165 |
$outbox_item = \get_post( $outbox_item_id ); |
| 166 |
|
| 167 |
if ( ! $outbox_item ) { |
| 168 |
return; |
| 169 |
} |
| 170 |
|
| 171 |
$activity = Outbox::get_activity( $outbox_item_id ); |
| 172 |
|
| 173 |
if ( \is_wp_error( $activity ) ) { |
| 174 |
return; |
| 175 |
} |
| 176 |
|
| 177 |
$json = $activity->to_json(); |
| 178 |
$inboxes = Followers::get_inboxes_for_activity( $json, $outbox_item->post_author, $batch_size, $offset ); |
| 179 |
$retries = self::send_to_inboxes( $inboxes, $outbox_item_id ); |
| 180 |
|
| 181 |
// Retry failed inboxes. |
| 182 |
if ( ! empty( $retries ) ) { |
| 183 |
self::schedule_retry( $retries, $outbox_item_id ); |
| 184 |
} |
| 185 |
|
| 186 |
if ( \is_countable( $inboxes ) && \count( $inboxes ) < $batch_size ) { |
| 187 |
\delete_post_meta( $outbox_item_id, '_activitypub_outbox_offset' ); |
| 188 |
|
| 189 |
/** |
| 190 |
* Fires when the followers are complete. |
| 191 |
* |
| 192 |
* @param array $inboxes The inboxes. |
| 193 |
* @param string $json The ActivityPub Activity JSON |
| 194 |
* @param int $actor_id The actor ID. |
| 195 |
* @param int $outbox_item_id The Outbox item ID. |
| 196 |
* @param int $batch_size The batch size. |
| 197 |
* @param int $offset The offset. |
| 198 |
*/ |
| 199 |
\do_action( 'activitypub_outbox_processing_complete', $inboxes, $json, $outbox_item->post_author, $outbox_item_id, $batch_size, $offset ); |
| 200 |
|
| 201 |
// No more followers to process for this update. |
| 202 |
\wp_publish_post( $outbox_item_id ); |
| 203 |
} else { |
| 204 |
\update_post_meta( $outbox_item_id, '_activitypub_outbox_offset', $offset + $batch_size ); |
| 205 |
|
| 206 |
/** |
| 207 |
* Fires when the batch of followers is complete. |
| 208 |
* |
| 209 |
* @param array $inboxes The inboxes. |
| 210 |
* @param string $json The ActivityPub Activity JSON |
| 211 |
* @param int $actor_id The actor ID. |
| 212 |
* @param int $outbox_item_id The Outbox item ID. |
| 213 |
* @param int $batch_size The batch size. |
| 214 |
* @param int $offset The offset. |
| 215 |
*/ |
| 216 |
\do_action( 'activitypub_outbox_processing_batch_complete', $inboxes, $json, $outbox_item->post_author, $outbox_item_id, $batch_size, $offset ); |
| 217 |
|
| 218 |
return array( $outbox_item_id, $batch_size, $offset + $batch_size ); |
| 219 |
} |
| 220 |
} |
| 221 |
|
| 222 |
/** |
| 223 |
* Retry sending to followers. |
| 224 |
* |
| 225 |
* @param string $transient_key The key to retrieve retry inboxes. |
| 226 |
* @param int $outbox_item_id The Outbox item ID. |
| 227 |
* @param int $attempt The attempt number. |
| 228 |
*/ |
| 229 |
public static function retry_send_to_followers( $transient_key, $outbox_item_id, $attempt = 1 ) { |
| 230 |
$inboxes = \get_transient( $transient_key ); |
| 231 |
if ( false === $inboxes ) { |
| 232 |
return; |
| 233 |
} |
| 234 |
|
| 235 |
// Delete the transient as we no longer need it. |
| 236 |
\delete_transient( $transient_key ); |
| 237 |
|
| 238 |
$retries = self::send_to_inboxes( $inboxes, $outbox_item_id ); |
| 239 |
|
| 240 |
// Retry failed inboxes. |
| 241 |
if ( ++$attempt < self::get_retry_max_attempts() && ! empty( $retries ) ) { |
| 242 |
self::schedule_retry( $retries, $outbox_item_id, $attempt ); |
| 243 |
} |
| 244 |
} |
| 245 |
|
| 246 |
/** |
| 247 |
* Send to inboxes. |
| 248 |
* |
| 249 |
* @param array $inboxes The inboxes to notify. |
| 250 |
* @param int $outbox_item_id The Outbox item ID. |
| 251 |
* @return array The failed inboxes. |
| 252 |
*/ |
| 253 |
private static function send_to_inboxes( $inboxes, $outbox_item_id ) { |
| 254 |
$outbox_item = \get_post( $outbox_item_id ); |
| 255 |
|
| 256 |
$activity = Outbox::get_activity( $outbox_item_id ); |
| 257 |
|
| 258 |
if ( \is_wp_error( $activity ) ) { |
| 259 |
return array(); |
| 260 |
} |
| 261 |
|
| 262 |
$json = $activity->to_json(); |
| 263 |
|
| 264 |
$retries = array(); |
| 265 |
|
| 266 |
/** |
| 267 |
* Fires before sending an Activity to inboxes. |
| 268 |
* |
| 269 |
* @param string $json The ActivityPub Activity JSON. |
| 270 |
* @param array $inboxes The inboxes to send to. |
| 271 |
* @param int $outbox_item_id The Outbox item ID. |
| 272 |
*/ |
| 273 |
\do_action( 'activitypub_pre_send_to_inboxes', $json, $inboxes, $outbox_item_id ); |
| 274 |
|
| 275 |
foreach ( $inboxes as $inbox ) { |
| 276 |
// Handle local inboxes via internal REST API, remote via HTTP. |
| 277 |
if ( is_same_domain( $inbox ) ) { |
| 278 |
$result = self::send_to_local_inbox( $inbox, $json ); |
| 279 |
} else { |
| 280 |
$result = safe_remote_post( $inbox, $json, $outbox_item->post_author ); |
| 281 |
} |
| 282 |
|
| 283 |
if ( \is_wp_error( $result ) && \in_array( $result->get_error_code(), self::get_retry_error_codes(), true ) ) { |
| 284 |
$retries[] = $inbox; |
| 285 |
} |
| 286 |
|
| 287 |
/** |
| 288 |
* Fires after an Activity has been sent to an inbox. |
| 289 |
* |
| 290 |
* @param array $result The result of the internal or remote post request. |
| 291 |
* @param string $inbox The inbox URL. |
| 292 |
* @param string $json The ActivityPub Activity JSON. |
| 293 |
* @param int $actor_id The actor ID. |
| 294 |
* @param int $outbox_item_id The Outbox item ID. |
| 295 |
*/ |
| 296 |
\do_action( 'activitypub_sent_to_inbox', $result, $inbox, $json, $outbox_item->post_author, $outbox_item_id ); |
| 297 |
} |
| 298 |
|
| 299 |
return $retries; |
| 300 |
} |
| 301 |
|
| 302 |
/** |
| 303 |
* Send an activity to a local inbox via internal REST API request. |
| 304 |
* |
| 305 |
* @param string $inbox_url The local inbox URL. |
| 306 |
* @param string $json The ActivityPub Activity JSON. |
| 307 |
* @return array|\WP_Error The result in the format of a remote post response, or WP_Error on failure. |
| 308 |
*/ |
| 309 |
private static function send_to_local_inbox( $inbox_url, $json ) { |
| 310 |
// Parse the inbox URL to extract the REST route. |
| 311 |
$path = \wp_parse_url( $inbox_url, PHP_URL_PATH ) ?? ''; |
| 312 |
$rest_route = \preg_replace( '#^/' . \preg_quote( \rest_get_url_prefix(), '#' ) . '#', '', $path ); |
| 313 |
|
| 314 |
// Create a REST request. |
| 315 |
$request = new \WP_REST_Request( 'POST', $rest_route ); |
| 316 |
$request->set_header( 'Content-Type', 'application/activity+json' ); |
| 317 |
$request->set_body( $json ); |
| 318 |
$request->get_json_params(); |
| 319 |
|
| 320 |
\add_filter( 'activitypub_defer_signature_verification', '__return_true' ); |
| 321 |
$response = \rest_do_request( $request ); |
| 322 |
\remove_filter( 'activitypub_defer_signature_verification', '__return_true' ); |
| 323 |
|
| 324 |
// Return result in format similar to remote post response. |
| 325 |
if ( $response->is_error() ) { |
| 326 |
return $response->as_error(); |
| 327 |
} |
| 328 |
|
| 329 |
return array( |
| 330 |
'response' => array( |
| 331 |
'code' => $response->get_status(), |
| 332 |
), |
| 333 |
'body' => \wp_json_encode( $response->get_data() ), |
| 334 |
); |
| 335 |
} |
| 336 |
|
| 337 |
/** |
| 338 |
* Schedule a retry. |
| 339 |
* |
| 340 |
* @param array $retries The inboxes to retry. |
| 341 |
* @param int $outbox_item_id The Outbox item ID. |
| 342 |
* @param int $attempt Optional. The attempt number. Default 1. |
| 343 |
*/ |
| 344 |
private static function schedule_retry( $retries, $outbox_item_id, $attempt = 1 ) { |
| 345 |
$transient_key = 'activitypub_retry_' . \wp_generate_password( 12, false ); |
| 346 |
\set_transient( $transient_key, $retries, WEEK_IN_SECONDS ); |
| 347 |
|
| 348 |
\wp_schedule_single_event( |
| 349 |
\time() + ( $attempt * $attempt * self::get_retry_delay() ), |
| 350 |
'activitypub_retry_activity', |
| 351 |
array( $transient_key, $outbox_item_id, $attempt ) |
| 352 |
); |
| 353 |
} |
| 354 |
|
| 355 |
/** |
| 356 |
* Send an Activity to a custom list of inboxes, like mentioned users or replied-to posts. |
| 357 |
* |
| 358 |
* For all custom implementations, please use the `activitypub_additional_inboxes` filter. |
| 359 |
* |
| 360 |
* @param Activity $activity The ActivityPub Activity. |
| 361 |
* @param int $actor_id The actor ID. |
| 362 |
* @param \WP_Post $outbox_item The WordPress object. |
| 363 |
*/ |
| 364 |
private static function send_to_additional_inboxes( $activity, $actor_id, $outbox_item = null ) { |
| 365 |
/** |
| 366 |
* Filters the list of inboxes to send the Activity to. |
| 367 |
* |
| 368 |
* @param array $inboxes The list of inboxes to send to. |
| 369 |
* @param int $actor_id The actor ID. |
| 370 |
* @param Activity $activity The ActivityPub Activity. |
| 371 |
*/ |
| 372 |
$inboxes = \apply_filters( 'activitypub_additional_inboxes', array(), $actor_id, $activity ); |
| 373 |
$inboxes = \array_unique( $inboxes ); |
| 374 |
|
| 375 |
$retries = self::send_to_inboxes( $inboxes, $outbox_item->ID ); |
| 376 |
|
| 377 |
// Retry failed inboxes. |
| 378 |
if ( ! empty( $retries ) ) { |
| 379 |
self::schedule_retry( $retries, $outbox_item->ID ); |
| 380 |
} |
| 381 |
} |
| 382 |
|
| 383 |
/** |
| 384 |
* Default filter to add Inboxes of Mentioned Actors |
| 385 |
* |
| 386 |
* @param array $inboxes The list of Inboxes. |
| 387 |
* @param int $actor_id The WordPress Actor-ID. |
| 388 |
* @param Activity $activity The ActivityPub Activity. |
| 389 |
* |
| 390 |
* @return array The filtered Inboxes. |
| 391 |
*/ |
| 392 |
public static function add_inboxes_by_mentioned_actors( $inboxes, $actor_id, $activity ) { |
| 393 |
$cc = $activity->get_cc() ?? array(); |
| 394 |
$to = $activity->get_to() ?? array(); |
| 395 |
|
| 396 |
$audience = \array_merge( $cc, $to ); |
| 397 |
|
| 398 |
// Remove "public placeholder" from the audience. |
| 399 |
$audience = \array_diff( $audience, ACTIVITYPUB_PUBLIC_AUDIENCE_IDENTIFIERS ); |
| 400 |
|
| 401 |
if ( $audience ) { |
| 402 |
$mentioned_inboxes = Mention::get_inboxes( $audience ); |
| 403 |
|
| 404 |
return \array_merge( $inboxes, $mentioned_inboxes ); |
| 405 |
} |
| 406 |
|
| 407 |
return $inboxes; |
| 408 |
} |
| 409 |
|
| 410 |
/** |
| 411 |
* Default filter to add Inboxes of Posts that are set as `in-reply-to` |
| 412 |
* |
| 413 |
* @param array $inboxes The list of Inboxes. |
| 414 |
* @param int $actor_id The WordPress Actor-ID. |
| 415 |
* @param Activity $activity The ActivityPub Activity. |
| 416 |
* |
| 417 |
* @return array The filtered Inboxes |
| 418 |
*/ |
| 419 |
public static function add_inboxes_of_replied_urls( $inboxes, $actor_id, $activity ) { |
| 420 |
$in_reply_to = $activity->get_in_reply_to(); |
| 421 |
|
| 422 |
if ( ! $in_reply_to ) { |
| 423 |
return $inboxes; |
| 424 |
} |
| 425 |
|
| 426 |
if ( ! \is_array( $in_reply_to ) ) { |
| 427 |
$in_reply_to = array( $in_reply_to ); |
| 428 |
} |
| 429 |
|
| 430 |
foreach ( $in_reply_to as $url ) { |
| 431 |
// No need to self-notify. |
| 432 |
if ( is_same_domain( $url ) ) { |
| 433 |
continue; |
| 434 |
} |
| 435 |
|
| 436 |
$object = Http::get_remote_object( $url ); |
| 437 |
|
| 438 |
if ( |
| 439 |
! $object || |
| 440 |
\is_wp_error( $object ) || |
| 441 |
empty( $object['attributedTo'] ) |
| 442 |
) { |
| 443 |
continue; |
| 444 |
} |
| 445 |
|
| 446 |
$actor = object_to_uri( $object['attributedTo'] ); |
| 447 |
$actor = Http::get_remote_object( $actor ); |
| 448 |
|
| 449 |
if ( ! $actor || \is_wp_error( $actor ) ) { |
| 450 |
continue; |
| 451 |
} |
| 452 |
|
| 453 |
if ( ! empty( $actor['endpoints']['sharedInbox'] ) ) { |
| 454 |
$inboxes[] = $actor['endpoints']['sharedInbox']; |
| 455 |
} elseif ( ! empty( $actor['inbox'] ) ) { |
| 456 |
$inboxes[] = $actor['inbox']; |
| 457 |
} |
| 458 |
} |
| 459 |
|
| 460 |
return $inboxes; |
| 461 |
} |
| 462 |
|
| 463 |
/** |
| 464 |
* Check if an Activity should be sent to followers. |
| 465 |
* |
| 466 |
* @param Activity $activity The Activity object. |
| 467 |
* @param \Activitypub\Model\User|\Activitypub\Model\Blog $actor The Actor object. |
| 468 |
* @param \WP_Post $outbox_item The Outbox item. |
| 469 |
* |
| 470 |
* @return boolean True if the Activity should be sent to followers, false if not. |
| 471 |
*/ |
| 472 |
protected static function should_send_to_followers( $activity, $actor, $outbox_item ) { |
| 473 |
$cc = (array) ( $activity->get_cc() ?? array() ); |
| 474 |
$to = (array) ( $activity->get_to() ?? array() ); |
| 475 |
$bcc = (array) ( $activity->get_bcc() ?? array() ); |
| 476 |
$bto = (array) ( $activity->get_bto() ?? array() ); |
| 477 |
|
| 478 |
$audience = \array_merge( $cc, $to, $bcc, $bto ); |
| 479 |
|
| 480 |
$send = ( |
| 481 |
// Check if activity is public. |
| 482 |
is_activity_public( $activity ) || |
| 483 |
// ...or check if follower endpoint is set. |
| 484 |
\in_array( $actor->get_followers(), $audience, true ) |
| 485 |
); |
| 486 |
|
| 487 |
if ( $send ) { |
| 488 |
$followers = Followers::get_inboxes_for_activity( $activity->to_json(), $outbox_item->post_author ); |
| 489 |
|
| 490 |
// Only send if there are followers to send to. |
| 491 |
$send = ! \is_countable( $followers ) || 0 < \count( $followers ); |
| 492 |
} |
| 493 |
|
| 494 |
/** |
| 495 |
* Filters whether to send an Activity to followers. |
| 496 |
* |
| 497 |
* @param bool $send_activity_to_followers Whether to send the Activity to followers. |
| 498 |
* @param Activity $activity The ActivityPub Activity. |
| 499 |
* @param int $actor_id The actor ID. |
| 500 |
* @param \WP_Post $outbox_item The WordPress object. |
| 501 |
*/ |
| 502 |
return \apply_filters( 'activitypub_send_activity_to_followers', $send, $activity, $outbox_item->post_author, $outbox_item ); |
| 503 |
} |
| 504 |
|
| 505 |
/** |
| 506 |
* Add Inboxes of Relays. |
| 507 |
* |
| 508 |
* @param array $inboxes The list of Inboxes. |
| 509 |
* @param int $actor_id The Actor-ID. |
| 510 |
* @param Activity $activity The ActivityPub Activity. |
| 511 |
* |
| 512 |
* @return array The filtered Inboxes. |
| 513 |
*/ |
| 514 |
public static function add_inboxes_of_relays( $inboxes, $actor_id, $activity ) { |
| 515 |
// Check if activity is public. |
| 516 |
if ( ! is_activity_public( $activity ) ) { |
| 517 |
return $inboxes; |
| 518 |
} |
| 519 |
|
| 520 |
$relays = \get_option( 'activitypub_relays', array() ); |
| 521 |
|
| 522 |
if ( empty( $relays ) ) { |
| 523 |
return $inboxes; |
| 524 |
} |
| 525 |
|
| 526 |
return \array_merge( $inboxes, $relays ); |
| 527 |
} |
| 528 |
|
| 529 |
/** |
| 530 |
* Fire outbox handlers for activities. |
| 531 |
* |
| 532 |
* Triggers activity type-specific handlers to process outbox activities, |
| 533 |
* allowing handlers to create WordPress posts or perform other side effects. |
| 534 |
* |
| 535 |
* @param int $outbox_id The Outbox item ID. |
| 536 |
* @param Activity $activity The Activity that was just added to the Outbox. |
| 537 |
*/ |
| 538 |
public static function fire_outbox_handlers( $outbox_id, $activity ) { |
| 539 |
$outbox_item = \get_post( $outbox_id ); |
| 540 |
|
| 541 |
if ( ! $outbox_item ) { |
| 542 |
return; |
| 543 |
} |
| 544 |
|
| 545 |
$type = $activity->get_type(); |
| 546 |
$user_id = $outbox_item->post_author; |
| 547 |
$data = $activity->to_array( false ); |
| 548 |
|
| 549 |
/** |
| 550 |
* Fires when an activity has been added to the outbox. |
| 551 |
* |
| 552 |
* Handlers can implement side effects like creating WordPress posts. |
| 553 |
* |
| 554 |
* @param array $data The activity data array. |
| 555 |
* @param int $user_id The user ID. |
| 556 |
* @param Activity $activity The Activity object. |
| 557 |
* @param int $outbox_id The outbox post ID. |
| 558 |
*/ |
| 559 |
\do_action( 'activitypub_handled_outbox_' . \strtolower( $type ), $data, $user_id, $activity, $outbox_id ); |
| 560 |
} |
| 561 |
|
| 562 |
/** |
| 563 |
* Send an immediate Accept activity for the given Outbox item. |
| 564 |
* |
| 565 |
* @param int $outbox_id The Outbox item ID. |
| 566 |
* @param Activity $activity The Activity that was just added to the Outbox. |
| 567 |
*/ |
| 568 |
public static function send_immediate_accept( $outbox_id, $activity ) { |
| 569 |
$outbox_item = \get_post( $outbox_id ); |
| 570 |
|
| 571 |
if ( ! $outbox_item || 'Accept' !== $activity->get_type() ) { |
| 572 |
return; |
| 573 |
} |
| 574 |
|
| 575 |
// Send to mentioned and replied-to users. Everyone other than followers. |
| 576 |
self::send_to_additional_inboxes( $activity, $outbox_item->post_author, $outbox_item ); |
| 577 |
} |
| 578 |
} |
| 579 |
|
