modified file wp-piwik

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

@@ -0,0 +1,114 @@
+<?php
+/**
+ * Follow handler file.
+ *
+ * @package Activitypub
+ */
+
+namespace Activitypub\Handler;
+
+use Activitypub\Notification;
+use Activitypub\Activity\Activity;
+use Activitypub\Collection\Actors;
+use Activitypub\Collection\Followers;
+
+use function Activitypub\add_to_outbox;
+
+/**
+ * Handle Follow requests.
+ */
+class Follow {
+	/**
+	 * Initialize the class, registering WordPress hooks.
+	 */
+	public static function init() {
+		\add_action(
+			'activitypub_inbox_follow',
+			array( self::class, 'handle_follow' )
+		);
+
+		\add_action(
+			'activitypub_followers_post_follow',
+			array( self::class, 'queue_accept' ),
+			10,
+			4
+		);
+	}
+
+	/**
+	 * Handle "Follow" requests.
+	 *
+	 * @param array $activity The activity object.
+	 */
+	public static function handle_follow( $activity ) {
+		$user = Actors::get_by_resource( $activity['object'] );
+
+		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();
+
+		// Save follower.
+		$follower = Followers::add_follower(
+			$user_id,
+			$activity['actor']
+		);
+
+		/**
+		 * Fires after a new follower has been added.
+		 *
+		 * @param string                                $actor    The URL of the actor (follower) who initiated the follow.
+		 * @param array                                 $activity The complete activity data of the follow request.
+		 * @param int                                   $user_id  The ID of the WordPress user being followed.
+		 * @param \Activitypub\Model\Follower|\WP_Error $follower The Follower object containing the new follower's data.
+		 */
+		do_action( 'activitypub_followers_post_follow', $activity['actor'], $activity, $user_id, $follower );
+
+		// Send notification.
+		$notification = new Notification(
+			'follow',
+			$activity['actor'],
+			$activity,
+			$user_id
+		);
+		$notification->send();
+	}
+
+	/**
+	 * Send Accept response.
+	 *
+	 * @param string                                $actor           The Actor URL.
+	 * @param array                                 $activity_object The Activity object.
+	 * @param int                                   $user_id         The ID of the WordPress User.
+	 * @param \Activitypub\Model\Follower|\WP_Error $follower        The Follower object.
+	 */
+	public static function queue_accept( $actor, $activity_object, $user_id, $follower ) {
+		if ( \is_wp_error( $follower ) ) {
+			// Impossible to send a "Reject" because we can not get the Remote-Inbox.
+			return;
+		}
+
+		// Only send minimal data.
+		$activity_object = array_intersect_key(
+			$activity_object,
+			array_flip(
+				array(
+					'id',
+					'type',
+					'actor',
+					'object',
+				)
+			)
+		);
+
+		$activity = new Activity();
+		$activity->set_type( 'Accept' );
+		$activity->set_actor( Actors::get_by_id( $user_id )->get_id() );
+		$activity->set_object( $activity_object );
+		$activity->set_to( array( $actor ) );
+
+		add_to_outbox( $activity, null, $user_id, ACTIVITYPUB_CONTENT_VISIBILITY_PRIVATE );
+	}
+}