Event-Federation/wordpress-activitypub
Event-Federation/wordpress-activitypub
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Add support for announce activities

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This commit is contained in:
Alex Kirk 2022-12-02 11:30:52 +01:00
parent 60cf0889d0
commit 7036a65991
1 changed files with 100 additions and 15 deletions
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115
integration/class-friends-feed-parser-activitypub.php
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@ -23,8 +23,7 @@ class Friends_Feed_Parser_ActivityPub extends \Friends\Feed_Parser {
public function __construct( \Friends\Feed $friends_feed ) {
$this->friends_feed = $friends_feed;
\add_action( 'activitypub_inbox_create', array( $this, 'handle_received_activity' ), 10, 2 );
\add_action( 'activitypub_inbox_accept', array( $this, 'handle_received_activity' ), 10, 2 );
\add_action( 'activitypub_inbox', array( $this, 'handle_received_activity' ), 10, 3 );
\add_action( 'friends_user_feed_activated', array( $this, 'queue_follow_user' ), 10 );
\add_action( 'friends_user_feed_deactivated', array( $this, 'queue_unfollow_user' ), 10 );
\add_action( 'friends_feed_parser_activitypub_follow', array( $this, 'follow_user' ), 10, 2 );
@ -32,6 +31,16 @@ class Friends_Feed_Parser_ActivityPub extends \Friends\Feed_Parser {
\add_filter( 'friends_rewrite_incoming_url', array( $this, 'friends_rewrite_incoming_url' ), 10, 2 );
}
/**
* Allow logging a message via an action.
* @param string $message The message to log.
* @param array $objects Optional objects as meta data.
* @return void
*/
private function log( $message, $objects = array() ) {
do_action( 'friends_activitypub_log', $message, $objects );
}
/**
* Determines if this is a supported feed and to what degree we feel it's supported.
*
@ -135,23 +144,53 @@ class Friends_Feed_Parser_ActivityPub extends \Friends\Feed_Parser {
*
* @param array $object The activity-object
* @param int $user_id The id of the local blog-user
* @param string $type The type of the activity.
*/
public function handle_received_activity( $object, $user_id ) {
$user_feed = $this->friends_feed->get_user_feed_by_url( $object['actor'] );
if ( is_wp_error( $user_feed ) ) {
$meta = \Activitypub\get_remote_metadata_by_actor( $object['actor'] );
$user_feed = $this->friends_feed->get_user_feed_by_url( $meta['url'] );
if ( is_wp_error( $user_feed ) ) {
// We're not following this user.
public function handle_received_activity( $object, $user_id, $type ) {
if ( ! in_array(
$type,
array(
// We don't need to handle 'Accept' types since it's handled by the ActivityPub plugin itself.
'create',
'announce',
)
) ) {
return false;
}
$actor_url = $object['actor'];
$user_feed = false;
if ( \wp_http_validate_url( $actor_url ) ) {
// Let's check if we follow this actor. If not it might be a different URL representation.
$user_feed = $this->friends_feed->get_user_feed_by_url( $actor_url );
}
if ( is_wp_error( $user_feed ) || ! \wp_http_validate_url( $actor_url ) ) {
$meta = \Activitypub\get_remote_metadata_by_actor( $actor_url );
if ( ! $meta || ! isset( $meta['url'] ) ) {
$this->log( 'Received invalid meta for ' . $actor_url );
return false;
}
$actor_url = $meta['url'];
if ( ! \wp_http_validate_url( $actor_url ) ) {
$this->log( 'Received invalid meta url for ' . $actor_url );
return false;
}
}
switch ( $object['type'] ) {
case 'Accept':
// nothing to do.
break;
case 'Create':
$this->handle_incoming_post( $object['object'], $user_feed );
$user_feed = $this->friends_feed->get_user_feed_by_url( $actor_url );
if ( ! $user_feed || is_wp_error( $user_feed ) ) {
$this->log( 'We\'re not following ' . $actor_url );
// We're not following this user.
return false;
}
switch ( $type ) {
case 'create':
return $this->handle_incoming_post( $object['object'], $user_feed );
case 'announce':
return $this->handle_incoming_announce( $object['object'], $user_feed, $user_id );
}
@ -188,6 +227,52 @@ class Friends_Feed_Parser_ActivityPub extends \Friends\Feed_Parser {
$this->friends_feed->process_incoming_feed_items( array( $item ), $user_feed );
}
/**
* We received an announced URL (boost) for a feed, handle it.
*
* @param array $url The announced URL.
* @param \Friends\User_Feed $user_feed The user feed.
*/
private function handle_incoming_announce( $url, \Friends\User_Feed $user_feed, $user_id ) {
$this->log( 'Received announce for ' . $url );
if ( ! \wp_http_validate_url( $url ) ) {
return false;
}
$response = \Activitypub\safe_remote_get( $url, $user_id );
if ( \is_wp_error( $response ) ) {
return $response;
}
$json = \wp_remote_retrieve_body( $response );
$object = \json_decode( $json, true );
if ( ! $object ) {
$this->log( 'Received invalid json', compact( 'json' ) );
return false;
}
$this->log( 'Received response', compact( 'url', 'object' ) );
$data = array(
'permalink' => $url,
'content' => $object['content'],
'post_format' => $this->map_type_to_post_format( $object['type'] ),
'date' => $object['published'],
);
if ( isset( $object['attributedTo'] ) ) {
$meta = \Activitypub\get_remote_metadata_by_actor( $object['attributedTo'] );
$this->log( 'Attributed to ' . $object['attributedTo'], compact( 'meta' ) );
if ( isset( $meta['name'] ) ) {
$data['author'] = $meta['name'];
} elseif ( isset( $meta['preferredUsername'] ) ) {
$data['author'] = $meta['preferredUsername'];
}
}
$this->log( 'Received feed item', compact( 'url', 'data' ) );
$item = new \Friends\Feed_Item( $data );
$this->friends_feed->process_incoming_feed_items( array( $item ), $user_feed );
}
/**
* Prepare to follow the user via a scheduled event.
*