modified file wp-piwik

wp-content/upgrade-temp-backup/plugins/activitypub/includes/handler/class-undo.php

@@ -0,0 +1,90 @@
+<?php
+/**
+ * Undo handler file.
+ *
+ * @package Activitypub
+ */
+
+namespace Activitypub\Handler;
+
+use Activitypub\Collection\Actors;
+use Activitypub\Collection\Followers;
+use Activitypub\Comment;
+
+use function Activitypub\object_to_uri;
+
+/**
+ * Handle Undo requests.
+ */
+class Undo {
+	/**
+	 * Initialize the class, registering WordPress hooks.
+	 */
+	public static function init() {
+		\add_action(
+			'activitypub_inbox_undo',
+			array( self::class, 'handle_undo' ),
+			10,
+			2
+		);
+	}
+
+	/**
+	 * Handle "Unfollow" requests.
+	 *
+	 * @param array    $activity The JSON "Undo" Activity.
+	 * @param int|null $user_id  The ID of the user who initiated the "Undo" activity.
+	 */
+	public static function handle_undo( $activity, $user_id ) {
+		if (
+			! isset( $activity['object']['type'] ) ||
+			! isset( $activity['object']['object'] )
+		) {
+			return;
+		}
+
+		$type  = $activity['object']['type'];
+		$state = false;
+
+		// Handle "Unfollow" requests.
+		if ( 'Follow' === $type ) {
+			$id   = object_to_uri( $activity['object']['object'] );
+			$user = Actors::get_by_resource( $id );
+
+			if ( ! $user || is_wp_error( $user ) ) {
+				// If we can not find a user, we can not initiate a follow process.
+				return;
+			}
+
+			$user_id = $user->get__id();
+			$actor   = object_to_uri( $activity['actor'] );
+
+			$state = Followers::remove_follower( $user_id, $actor );
+		}
+
+		// Handle "Undo" requests for "Like" and "Create" activities.
+		if ( in_array( $type, array( 'Like', 'Create', 'Announce' ), true ) ) {
+			if ( ACTIVITYPUB_DISABLE_INCOMING_INTERACTIONS ) {
+				return;
+			}
+
+			$object_id = object_to_uri( $activity['object'] );
+			$comment   = Comment::object_id_to_comment( esc_url_raw( $object_id ) );
+
+			if ( empty( $comment ) ) {
+				return;
+			}
+
+			$state = wp_delete_comment( $comment, true );
+		}
+
+		/**
+		 * Fires after an "Undo" activity has been handled.
+		 *
+		 * @param array    $activity The JSON "Undo" Activity.
+		 * @param int|null $user_id  The ID of the user who initiated the "Undo" activity otherwise null.
+		 * @param mixed    $state    The state of the "Undo" activity.
+		 */
+		do_action( 'activitypub_handled_undo', $activity, $user_id, $state );
+	}
+}