654 lines
20 KiB
PHP
654 lines
20 KiB
PHP
<?php
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/**
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* Scheduler class file.
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*
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* @package Activitypub
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*/
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namespace Activitypub;
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use Activitypub\Activity\Activity;
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use Activitypub\Activity\Base_Object;
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use Activitypub\Collection\Actors;
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use Activitypub\Collection\Inbox;
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use Activitypub\Collection\Outbox;
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use Activitypub\Collection\Remote_Actors;
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use Activitypub\Collection\Remote_Posts;
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use Activitypub\Scheduler\Actor;
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use Activitypub\Scheduler\Collection_Sync;
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use Activitypub\Scheduler\Comment;
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use Activitypub\Scheduler\Post;
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use Activitypub\Scheduler\Statistics;
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/**
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* Scheduler class.
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*
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* @author Matthias Pfefferle
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*/
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class Scheduler {
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/**
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* Scheduled events with their recurrence.
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*
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* @var array
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*/
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const SCHEDULES = array(
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'activitypub_update_remote_actors' => 'hourly',
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'activitypub_cleanup_remote_actors' => 'daily',
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'activitypub_reprocess_outbox' => 'hourly',
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'activitypub_outbox_purge' => 'daily',
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'activitypub_inbox_purge' => 'daily',
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'activitypub_ap_post_purge' => 'daily',
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'activitypub_tombstone_purge' => 'daily',
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'activitypub_sync_blocklist_subscriptions' => 'weekly',
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);
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/**
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* Allowed batch callbacks.
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*
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* @var array
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*/
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private static $batch_callbacks = array();
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/**
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* Get the pause between async batches (in seconds).
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*
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* @return int The pause in seconds.
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*/
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public static function get_retry_delay() {
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/**
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* Filters the pause between async batches (in seconds).
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*
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* @param int $async_batch_pause The pause in seconds. Default 30.
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*/
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return apply_filters( 'activitypub_scheduler_async_batch_pause', 30 );
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}
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/**
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* Initialize the class, registering WordPress hooks.
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*/
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public static function init() {
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self::register_schedulers();
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// Custom cron schedules.
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\add_filter( 'cron_schedules', array( self::class, 'add_cron_schedules' ) );
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// Follower Cleanups.
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\add_action( 'activitypub_update_remote_actors', array( self::class, 'update_remote_actors' ) );
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\add_action( 'activitypub_cleanup_remote_actors', array( self::class, 'cleanup_remote_actors' ) );
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// Event callbacks.
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\add_action( 'activitypub_async_batch', array( self::class, 'async_batch' ), 10, 99 );
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\add_action( 'activitypub_reprocess_outbox', array( self::class, 'reprocess_outbox' ) );
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\add_action( 'activitypub_outbox_purge', array( self::class, 'purge_outbox' ) );
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\add_action( 'activitypub_inbox_purge', array( self::class, 'purge_inbox' ) );
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\add_action( 'activitypub_ap_post_purge', array( self::class, 'purge_ap_posts' ) );
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\add_action( 'activitypub_tombstone_purge', array( self::class, 'purge_tombstones' ) );
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\add_action( 'activitypub_inbox_create_item', array( self::class, 'process_inbox_activity' ) );
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\add_action( 'activitypub_sync_blocklist_subscriptions', array( Blocklist_Subscriptions::class, 'sync_all' ) );
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\add_action( 'post_activitypub_add_to_outbox', array( self::class, 'schedule_outbox_activity_for_federation' ) );
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\add_action( 'post_activitypub_add_to_outbox', array( self::class, 'schedule_announce_activity' ), 10, 4 );
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\add_action( 'update_option_activitypub_outbox_purge_days', array( self::class, 'update_outbox_purge_schedule' ), 10, 2 );
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\add_action( 'update_option_activitypub_inbox_purge_days', array( self::class, 'update_inbox_purge_schedule' ), 10, 2 );
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\add_action( 'update_option_activitypub_ap_post_purge_days', array( self::class, 'update_ap_post_purge_schedule' ), 10, 2 );
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}
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/**
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* Register handlers.
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*/
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public static function register_schedulers() {
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Post::init();
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Actor::init();
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Collection_Sync::init();
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Comment::init();
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Statistics::init();
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/**
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* Register additional schedulers.
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*
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* @since 5.0.0
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*/
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\do_action( 'activitypub_register_schedulers' );
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}
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/**
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* Add custom cron schedules.
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*
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* @param array $schedules Existing cron schedules.
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*
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* @return array Modified cron schedules.
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*/
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public static function add_cron_schedules( $schedules ) {
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$schedules['monthly'] = array(
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'interval' => MONTH_IN_SECONDS,
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'display' => \__( 'Once Monthly', 'activitypub' ),
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);
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$schedules['yearly'] = array(
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'interval' => YEAR_IN_SECONDS,
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'display' => \__( 'Once Yearly', 'activitypub' ),
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);
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return $schedules;
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}
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/**
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* Register a batch callback for async processing.
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*
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* @param string $hook The cron event hook name.
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* @param callable $callback The callback to execute.
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*/
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public static function register_async_batch_callback( $hook, $callback ) {
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if ( \did_action( 'init' ) && ! \doing_action( 'init' ) ) {
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\_doing_it_wrong( __METHOD__, 'Async batch callbacks should be registered before or during the init action.', '7.5.0' );
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return;
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}
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if ( ! \is_callable( $callback ) ) {
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return;
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}
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self::$batch_callbacks[ $hook ] = $callback;
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// Register the WordPress action hook to trigger async_batch.
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\add_action( $hook, array( self::class, 'async_batch' ), 10, 99 );
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}
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/**
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* Schedule all ActivityPub schedules.
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*/
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public static function register_schedules() {
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foreach ( self::SCHEDULES as $hook => $recurrence ) {
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if ( ! \wp_next_scheduled( $hook ) ) {
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\wp_schedule_event( time(), $recurrence, $hook );
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}
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}
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// Schedule monthly stats collection for the 1st of each month.
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if ( ! \wp_next_scheduled( 'activitypub_collect_monthly_stats' ) ) {
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// Calculate next 1st of month at 2:00 AM.
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$next_first = self::get_next_first_of_month();
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\wp_schedule_event( $next_first, 'monthly', 'activitypub_collect_monthly_stats' );
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}
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// Schedule annual stats compilation for December 1st (wrapped notification).
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if ( ! \wp_next_scheduled( 'activitypub_compile_annual_stats' ) ) {
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$next_december = self::get_next_december_first();
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\wp_schedule_event( $next_december, 'yearly', 'activitypub_compile_annual_stats' );
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}
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}
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/**
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* Un-schedule all ActivityPub schedules.
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*
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* @return void
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*/
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public static function deregister_schedules() {
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foreach ( array_keys( self::SCHEDULES ) as $hook ) {
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\wp_unschedule_hook( $hook );
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}
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// Statistics schedules.
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\wp_unschedule_hook( 'activitypub_collect_monthly_stats' );
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\wp_unschedule_hook( 'activitypub_compile_annual_stats' );
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}
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/**
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* Get the next 1st of month timestamp.
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*
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* @return int Unix timestamp of next 1st of month at 2:00 AM.
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*/
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private static function get_next_first_of_month() {
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$now = \current_time( 'timestamp' ); // phpcs:ignore WordPress.DateTime.CurrentTimeTimestamp.Requested
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$next_month = \strtotime( 'first day of next month 02:00:00', $now );
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return $next_month;
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}
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/**
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* Get the next December 1st timestamp for wrapped notification.
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*
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* @return int Unix timestamp of next December 1st at 3:00 AM.
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*/
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private static function get_next_december_first() {
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$now = \current_time( 'timestamp' ); // phpcs:ignore WordPress.DateTime.CurrentTimeTimestamp.Requested
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$year = (int) \gmdate( 'Y', $now );
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// Get December 1st 3:00 AM for this year.
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$this_year_dec_first = \strtotime( sprintf( '%d-12-01 03:00:00', $year ) );
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// If we're already past this year's December 1st, schedule for next year.
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if ( $now >= $this_year_dec_first ) {
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return \strtotime( sprintf( '%d-12-01 03:00:00', $year + 1 ) );
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}
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return $this_year_dec_first;
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}
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/**
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* Unschedule events for an outbox item.
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*
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* @param int $outbox_item_id The outbox item ID.
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*/
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public static function unschedule_events_for_item( $outbox_item_id ) {
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$event_args = array(
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$outbox_item_id,
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Dispatcher::get_batch_size(),
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\get_post_meta( $outbox_item_id, '_activitypub_outbox_offset', true ) ?: 0, // phpcs:ignore
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);
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\delete_post_meta( $outbox_item_id, '_activitypub_outbox_offset' );
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$timestamp = \wp_next_scheduled( 'activitypub_process_outbox', array( $outbox_item_id ) );
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\wp_unschedule_event( $timestamp, 'activitypub_process_outbox', array( $outbox_item_id ) );
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$timestamp = \wp_next_scheduled( 'activitypub_send_activity', $event_args );
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\wp_unschedule_event( $timestamp, 'activitypub_send_activity', $event_args );
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// Invalidate any retries for this outbox item.
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foreach ( _get_cron_array() as $timestamp => $cron ) {
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if ( ! isset( $cron['activitypub_retry_activity'] ) ) {
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continue;
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}
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foreach ( $cron['activitypub_retry_activity'] as $event ) {
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if ( isset( $event['args'][1] ) && $outbox_item_id === $event['args'][1] ) {
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\wp_unschedule_event( $timestamp, 'activitypub_retry_activity', $event['args'] );
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}
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}
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}
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}
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/**
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* Update remote Actors.
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*/
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public static function update_remote_actors() {
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$number = 5;
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if ( defined( 'DISABLE_WP_CRON' ) && DISABLE_WP_CRON ) {
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$number = 50;
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}
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/**
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* Filter the number of remote Actors to update.
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*
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* @param int $number The number of remote Actors to update.
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*/
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$number = apply_filters( 'activitypub_update_remote_actors_number', $number );
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$actors = Remote_Actors::get_outdated( $number );
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foreach ( $actors as $actor ) {
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$meta = get_remote_metadata_by_actor( $actor->guid, false );
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if ( empty( $meta ) || ! is_array( $meta ) || is_wp_error( $meta ) ) {
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Remote_Actors::add_error( $actor->ID, 'Failed to fetch or parse metadata' );
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} else {
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$id = Remote_Actors::upsert( $meta );
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if ( \is_wp_error( $id ) ) {
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continue;
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}
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Remote_Actors::clear_errors( $id );
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}
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}
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}
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/**
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* Cleanup remote Actors.
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*/
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public static function cleanup_remote_actors() {
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$number = 5;
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if ( defined( 'DISABLE_WP_CRON' ) && DISABLE_WP_CRON ) {
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$number = 50;
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}
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/**
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* Filter the number of remote Actors to clean up.
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*
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* @param int $number The number of remote Actors to clean up.
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*/
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$number = apply_filters( 'activitypub_cleanup_remote_actors_number', $number );
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$actors = Remote_Actors::get_faulty( $number );
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foreach ( $actors as $actor ) {
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$meta = get_remote_metadata_by_actor( $actor->guid, false );
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if ( Tombstone::exists( $meta ) ) {
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\wp_delete_post( $actor->ID );
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} elseif ( empty( $meta ) || ! is_array( $meta ) || \is_wp_error( $meta ) ) {
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if ( Remote_Actors::count_errors( $actor->ID ) >= 5 ) {
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\wp_schedule_single_event( \time(), 'activitypub_delete_remote_actor_interactions', array( $actor->guid ) );
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\wp_schedule_single_event( \time(), 'activitypub_delete_remote_actor_posts', array( $actor->guid ) );
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\wp_delete_post( $actor->ID );
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} else {
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Remote_Actors::add_error( $actor->ID, $meta );
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}
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} else {
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$id = Remote_Actors::upsert( $meta );
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if ( \is_wp_error( $id ) ) {
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Remote_Actors::add_error( $actor->ID, $id );
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} else {
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Remote_Actors::clear_errors( $actor->ID );
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}
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}
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}
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}
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/**
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* Schedule the outbox item for federation.
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*
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* @param int $id The ID of the outbox item.
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* @param int $offset The offset to add to the scheduled time. Default 3 seconds.
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*/
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public static function schedule_outbox_activity_for_federation( $id, $offset = 3 ) {
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$hook = 'activitypub_process_outbox';
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$args = array( $id );
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if ( false === wp_next_scheduled( $hook, $args ) ) {
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\wp_schedule_single_event(
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\time() + $offset,
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$hook,
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$args
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);
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}
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}
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/**
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* Reprocess the outbox.
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*/
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public static function reprocess_outbox() {
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$ids = \get_posts(
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array(
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'post_type' => Outbox::POST_TYPE,
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'post_status' => 'pending',
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'posts_per_page' => 10,
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'fields' => 'ids',
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)
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);
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foreach ( $ids as $id ) {
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// Bail if there is a pending batch.
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$offset = \get_post_meta( $id, '_activitypub_outbox_offset', true ) ?: 0; // phpcs:ignore
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if ( \wp_next_scheduled( 'activitypub_send_activity', array( $id, Dispatcher::get_batch_size(), $offset ) ) ) {
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return;
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}
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// Bail if there is a batch in progress.
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$key = \md5( \serialize( $id ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_serialize
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if ( self::is_locked( $key ) ) {
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return;
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}
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self::schedule_outbox_activity_for_federation( $id );
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}
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}
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/**
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* Purge outbox items based on a schedule.
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*/
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public static function purge_outbox() {
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Outbox::purge( \get_option( 'activitypub_outbox_purge_days', ACTIVITYPUB_OUTBOX_PURGE_DAYS ) );
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}
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/**
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* Purge inbox items based on a schedule.
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*/
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public static function purge_inbox() {
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Inbox::purge( \get_option( 'activitypub_inbox_purge_days', ACTIVITYPUB_INBOX_PURGE_DAYS ) );
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}
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/**
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* Purge remote posts based on a schedule.
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*/
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public static function purge_ap_posts() {
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Remote_Posts::purge( \get_option( 'activitypub_ap_post_purge_days', ACTIVITYPUB_AP_POST_PURGE_DAYS ) );
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}
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/**
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* Daily cron handler that purges expired tombstones.
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*
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* Retention is non-urgent: large backlogs (e.g. after retention is first enforced)
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* drain across multiple daily runs.
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*
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* @since 8.3.0
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*/
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public static function purge_tombstones() {
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\Activitypub\Tombstone::purge();
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}
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/**
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* Process cached inbox activity.
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*
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* Retrieves all collected user IDs for an activity and processes them together.
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*
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* @param string $activity_id The activity ID.
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*/
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public static function process_inbox_activity( $activity_id ) {
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// Deduplicate if multiple inbox items were created due to race condition.
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$inbox_item = Inbox::deduplicate( $activity_id );
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if ( ! $inbox_item ) {
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return;
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}
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$data = \json_decode( $inbox_item->post_content, true );
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// Reconstruct activity from inbox post.
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$activity = Activity::init_from_array( $data );
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$type = \Activitypub\camel_to_snake_case( $activity->get_type() );
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$context = Inbox::CONTEXT_INBOX;
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$user_ids = Inbox::get_recipients( $inbox_item->ID );
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/**
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* Fires after any ActivityPub Inbox activity has been handled, regardless of activity type.
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*
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* This hook is triggered for all activity types processed by the inbox handler.
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*
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* @param array $data The data array.
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* @param array $user_ids The user IDs.
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* @param string $type The type of the activity.
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* @param Activity $activity The Activity object.
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* @param int $result The ID of the inbox item that was created, or WP_Error if failed.
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* @param string $context The context of the request ('inbox' or 'shared_inbox').
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*/
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\do_action( 'activitypub_handled_inbox', $data, $user_ids, $type, $activity, $inbox_item->ID, $context );
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/**
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* Fires after an ActivityPub Inbox activity has been handled.
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*
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* @param array $data The data array.
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* @param array $user_ids The user IDs.
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* @param Activity $activity The Activity object.
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* @param int $result The ID of the inbox item that was created, or WP_Error if failed.
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* @param string $context The context of the request ('inbox' or 'shared_inbox').
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*/
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\do_action( 'activitypub_handled_inbox_' . $type, $data, $user_ids, $activity, $inbox_item->ID, $context );
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}
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/**
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* Update schedules when outbox purge days settings change.
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*
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* @param int $old_value The old value.
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* @param int $value The new value.
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*/
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public static function update_outbox_purge_schedule( $old_value, $value ) {
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if ( 0 === (int) $value ) {
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\wp_clear_scheduled_hook( 'activitypub_outbox_purge' );
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} elseif ( ! \wp_next_scheduled( 'activitypub_outbox_purge' ) ) {
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\wp_schedule_event( \time(), 'daily', 'activitypub_outbox_purge' );
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}
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}
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/**
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* Update schedules when inbox purge days settings change.
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*
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* @param int $old_value The old value.
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* @param int $value The new value.
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*/
|
|
public static function update_inbox_purge_schedule( $old_value, $value ) {
|
|
if ( 0 === (int) $value ) {
|
|
\wp_clear_scheduled_hook( 'activitypub_inbox_purge' );
|
|
} elseif ( ! \wp_next_scheduled( 'activitypub_inbox_purge' ) ) {
|
|
\wp_schedule_event( \time(), 'daily', 'activitypub_inbox_purge' );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Update schedules when remote posts purge days settings change.
|
|
*
|
|
* @param int $old_value The old value.
|
|
* @param int $value The new value.
|
|
*/
|
|
public static function update_ap_post_purge_schedule( $old_value, $value ) {
|
|
if ( 0 === (int) $value ) {
|
|
\wp_clear_scheduled_hook( 'activitypub_ap_post_purge' );
|
|
} elseif ( ! \wp_next_scheduled( 'activitypub_ap_post_purge' ) ) {
|
|
\wp_schedule_event( \time(), 'daily', 'activitypub_ap_post_purge' );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Asynchronously runs batch processing routines.
|
|
*
|
|
* The batching part is optional and only comes into play if the callback returns anything.
|
|
* Beyond that it's a helper to run a callback asynchronously with locking to prevent simultaneous processing.
|
|
*
|
|
* @params mixed ...$args Optional. Parameters that get passed to the callback.
|
|
*/
|
|
public static function async_batch() {
|
|
$args = \func_get_args(); // phpcs:ignore PHPCompatibility.FunctionUse.ArgumentFunctionsReportCurrentValue
|
|
$callback = self::$batch_callbacks[ \current_action() ] ?? $args[0] ?? null;
|
|
if ( ! \is_callable( $callback ) ) {
|
|
\_doing_it_wrong( __METHOD__, 'There must be a valid callback associated with the current action.', '5.2.0' );
|
|
return;
|
|
}
|
|
|
|
$key = \md5( \serialize( $callback ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_serialize
|
|
|
|
// Bail if the existing lock is still valid.
|
|
if ( self::is_locked( $key ) ) {
|
|
\wp_schedule_single_event( \time() + MINUTE_IN_SECONDS, \current_action(), $args );
|
|
return;
|
|
}
|
|
|
|
self::lock( $key );
|
|
|
|
if ( \is_callable( $args[0] ?? null ) ) {
|
|
$callback = \array_shift( $args ); // Remove $callback from arguments.
|
|
}
|
|
$next = \call_user_func_array( $callback, $args );
|
|
|
|
self::unlock( $key );
|
|
|
|
if ( ! empty( $next ) ) {
|
|
// Schedule the next run, adding the result to the arguments.
|
|
\wp_schedule_single_event( \time() + self::get_retry_delay(), \current_action(), \array_values( $next ) );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Locks the async batch process for individual callbacks to prevent simultaneous processing.
|
|
*
|
|
* @param string $key Serialized callback name.
|
|
* @return bool|int True if the lock was successful, timestamp of existing lock otherwise.
|
|
*/
|
|
public static function lock( $key ) {
|
|
global $wpdb;
|
|
|
|
// Try to lock.
|
|
$lock_result = (bool) $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` ( `option_name`, `option_value`, `autoload` ) VALUES (%s, %s, 'no') /* LOCK */", 'activitypub_async_batch_' . $key, \time() ) ); // phpcs:ignore WordPress.DB
|
|
|
|
if ( ! $lock_result ) {
|
|
$lock_result = \get_option( 'activitypub_async_batch_' . $key );
|
|
}
|
|
|
|
return $lock_result;
|
|
}
|
|
|
|
/**
|
|
* Unlocks processing for the async batch callback.
|
|
*
|
|
* @param string $key Serialized callback name.
|
|
*/
|
|
public static function unlock( $key ) {
|
|
\delete_option( 'activitypub_async_batch_' . $key );
|
|
}
|
|
|
|
/**
|
|
* Whether the async batch callback is locked.
|
|
*
|
|
* @param string $key Serialized callback name.
|
|
* @return boolean
|
|
*/
|
|
public static function is_locked( $key ) {
|
|
$lock = \get_option( 'activitypub_async_batch_' . $key );
|
|
|
|
if ( ! $lock ) {
|
|
return false;
|
|
}
|
|
|
|
$lock = (int) $lock;
|
|
|
|
if ( $lock < \time() - 1800 ) {
|
|
self::unlock( $key );
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Send announces.
|
|
*
|
|
* @param int $outbox_activity_id The outbox activity ID.
|
|
* @param Activity $activity The activity object.
|
|
* @param int $actor_id The actor ID.
|
|
* @param int $content_visibility The content visibility.
|
|
*/
|
|
public static function schedule_announce_activity( $outbox_activity_id, $activity, $actor_id, $content_visibility ) {
|
|
// Only if we're in both Blog and User modes.
|
|
if ( ACTIVITYPUB_ACTOR_AND_BLOG_MODE !== \get_option( 'activitypub_actor_mode', ACTIVITYPUB_ACTOR_MODE ) ) {
|
|
return;
|
|
}
|
|
|
|
// Only if this isn't the Blog Actor.
|
|
if ( Actors::BLOG_USER_ID === $actor_id ) {
|
|
return;
|
|
}
|
|
|
|
// Only if the content is public or quiet public.
|
|
if ( ACTIVITYPUB_CONTENT_VISIBILITY_PUBLIC !== $content_visibility ) {
|
|
return;
|
|
}
|
|
|
|
// Only if the activity is a Create.
|
|
if ( 'Create' !== $activity->get_type() ) {
|
|
return;
|
|
}
|
|
|
|
if ( ! is_object( $activity->get_object() ) ) {
|
|
return;
|
|
}
|
|
|
|
// Check if the object is an article, image, audio, video, event, or document and ignore profile updates and other activities.
|
|
if ( ! in_array( $activity->get_object()->get_type(), Base_Object::TYPES, true ) ) {
|
|
return;
|
|
}
|
|
|
|
$announce = new Activity();
|
|
$announce->set_type( 'Announce' );
|
|
$announce->set_actor( Actors::get_by_id( Actors::BLOG_USER_ID )->get_id() );
|
|
$announce->set_object( $activity );
|
|
$announce->add_cc( object_to_uri( $activity->get_actor() ) );
|
|
|
|
$outbox_activity_id = Outbox::add( $announce, Actors::BLOG_USER_ID );
|
|
|
|
if ( ! $outbox_activity_id ) {
|
|
return;
|
|
}
|
|
|
|
// Schedule the outbox item for federation.
|
|
self::schedule_outbox_activity_for_federation( $outbox_activity_id, 120 );
|
|
}
|
|
}
|