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<?php |
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/** |
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* Interactions collection file. |
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* |
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* @package Activitypub |
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*/ |
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|
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namespace Activitypub\Collection; |
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|
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use WP_Comment_Query; |
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use Activitypub\Comment; |
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|
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use function Activitypub\object_to_uri; |
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use function Activitypub\url_to_commentid; |
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use function Activitypub\object_id_to_comment; |
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use function Activitypub\get_remote_metadata_by_actor; |
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|
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/** |
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* ActivityPub Interactions Collection. |
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*/ |
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class Interactions { |
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const INSERT = 'insert'; |
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const UPDATE = 'update'; |
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|
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/** |
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* Add a comment to a post. |
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* |
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* @param array $activity The activity-object. |
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* |
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* @return array|false The comment data or false on failure. |
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*/ |
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public static function add_comment( $activity ) { |
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$commentdata = self::activity_to_comment( $activity ); |
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|
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if ( ! $commentdata || ! isset( $activity['object']['inReplyTo'] ) ) { |
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return false; |
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} |
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|
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$in_reply_to = \esc_url_raw( $activity['object']['inReplyTo'] ); |
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$comment_post_id = \url_to_postid( $in_reply_to ); |
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$parent_comment_id = url_to_commentid( $in_reply_to ); |
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|
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// Save only replies and reactions. |
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if ( ! $comment_post_id && $parent_comment_id ) { |
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$parent_comment = get_comment( $parent_comment_id ); |
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$comment_post_id = $parent_comment->comment_post_ID; |
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} |
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|
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// Not a reply to a post or comment. |
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if ( ! $comment_post_id ) { |
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return false; |
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} |
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|
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$commentdata['comment_post_ID'] = $comment_post_id; |
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$commentdata['comment_parent'] = $parent_comment_id ? $parent_comment_id : 0; |
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|
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return self::persist( $commentdata, self::INSERT ); |
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} |
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|
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/** |
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* Update a comment. |
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* |
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* @param array $activity The activity object. |
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* |
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* @return array|string|int|\WP_Error|false The comment data or false on failure. |
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*/ |
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public static function update_comment( $activity ) { |
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$meta = get_remote_metadata_by_actor( $activity['actor'] ); |
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|
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// Determine comment_ID. |
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$comment = object_id_to_comment( \esc_url_raw( $activity['object']['id'] ) ); |
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$commentdata = \get_comment( $comment, ARRAY_A ); |
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|
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if ( ! $commentdata ) { |
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return false; |
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} |
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|
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// Found a local comment id. |
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$commentdata['comment_author'] = \esc_attr( $meta['name'] ? $meta['name'] : $meta['preferredUsername'] ); |
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$commentdata['comment_content'] = \addslashes( $activity['object']['content'] ); |
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|
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return self::persist( $commentdata, self::UPDATE ); |
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} |
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|
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/** |
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* Adds an incoming Like, Announce, ... as a comment to a post. |
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* |
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* @param array $activity Activity array. |
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* |
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* @return array|false Comment data or `false` on failure. |
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*/ |
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public static function add_reaction( $activity ) { |
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$commentdata = self::activity_to_comment( $activity ); |
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|
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if ( ! $commentdata ) { |
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return false; |
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} |
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|
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$url = object_to_uri( $activity['object'] ); |
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$comment_post_id = url_to_postid( $url ); |
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$parent_comment_id = url_to_commentid( $url ); |
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|
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if ( ! $comment_post_id && $parent_comment_id ) { |
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$parent_comment = get_comment( $parent_comment_id ); |
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$comment_post_id = $parent_comment->comment_post_ID; |
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} |
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|
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if ( ! $comment_post_id ) { |
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// Not a reply to a post or comment. |
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return false; |
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} |
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|
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$type = $activity['type']; |
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|
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if ( ! Comment::is_registered_comment_type( $type ) ) { |
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// Not a valid comment type. |
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return false; |
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} |
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|
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$comment_type = Comment::get_comment_type( $type ); |
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$comment_content = $comment_type['excerpt']; |
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|
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$commentdata['comment_post_ID'] = $comment_post_id; |
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$commentdata['comment_content'] = \esc_html( $comment_content ); |
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$commentdata['comment_type'] = \esc_attr( $comment_type['type'] ); |
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$commentdata['comment_meta']['source_id'] = \esc_url_raw( $activity['id'] ); |
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|
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return self::persist( $commentdata, self::INSERT ); |
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} |
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|
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/** |
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* Get interaction(s) for a given URL/ID. |
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* |
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* @param string $url The URL/ID to get interactions for. |
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* |
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* @return array The interactions as WP_Comment objects. |
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*/ |
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public static function get_interaction_by_id( $url ) { |
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$args = array( |
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'nopaging' => true, |
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// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query |
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'meta_query' => array( |
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'relation' => 'AND', |
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array( |
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'key' => 'protocol', |
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'value' => 'activitypub', |
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), |
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array( |
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'relation' => 'OR', |
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array( |
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'key' => 'source_url', |
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'value' => $url, |
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), |
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array( |
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'key' => 'source_id', |
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'value' => $url, |
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), |
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), |
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), |
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); |
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|
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$query = new WP_Comment_Query( $args ); |
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return $query->comments; |
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} |
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|
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/** |
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* Get interaction(s) for a given actor. |
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* |
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* @param string $actor The Actor-URL. |
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* |
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* @return array The interactions as WP_Comment objects. |
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*/ |
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public static function get_interactions_by_actor( $actor ) { |
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$meta = get_remote_metadata_by_actor( $actor ); |
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|
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// Get URL, because $actor seems to be the ID. |
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if ( $meta && ! is_wp_error( $meta ) && isset( $meta['url'] ) ) { |
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$actor = object_to_uri( $meta['url'] ); |
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} |
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|
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$args = array( |
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'nopaging' => true, |
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'author_url' => $actor, |
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// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query |
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'meta_query' => array( |
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array( |
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'key' => 'protocol', |
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'value' => 'activitypub', |
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'compare' => '=', |
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), |
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), |
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); |
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$comment_query = new WP_Comment_Query( $args ); |
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return $comment_query->comments; |
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} |
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|
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/** |
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* Adds line breaks to the list of allowed comment tags. |
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* |
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* @param array $allowed_tags Allowed HTML tags. |
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* @param string $context Optional. Context. Default empty. |
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* |
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* @return array Filtered tag list. |
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*/ |
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public static function allowed_comment_html( $allowed_tags, $context = '' ) { |
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if ( 'pre_comment_content' !== $context ) { |
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// Do nothing. |
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return $allowed_tags; |
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} |
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|
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// Add `p` and `br` to the list of allowed tags. |
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if ( ! array_key_exists( 'br', $allowed_tags ) ) { |
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$allowed_tags['br'] = array(); |
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} |
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|
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if ( ! array_key_exists( 'p', $allowed_tags ) ) { |
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$allowed_tags['p'] = array(); |
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} |
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|
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return $allowed_tags; |
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} |
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|
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/** |
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* Convert an Activity to a WP_Comment |
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* |
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* @param array $activity The Activity array. |
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* |
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* @return array|false The comment data or false on failure. |
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*/ |
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public static function activity_to_comment( $activity ) { |
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$comment_content = null; |
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$actor = object_to_uri( $activity['actor'] ); |
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$actor = get_remote_metadata_by_actor( $actor ); |
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|
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// Check Actor-Meta. |
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if ( ! $actor || is_wp_error( $actor ) ) { |
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return false; |
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} |
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|
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// Check Actor-Name. |
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if ( isset( $actor['name'] ) ) { |
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$comment_author = $actor['name']; |
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} elseif ( isset( $actor['preferredUsername'] ) ) { |
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$comment_author = $actor['preferredUsername']; |
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} else { |
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return false; |
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} |
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|
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$url = object_to_uri( $actor['url'] ); |
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|
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if ( ! $url ) { |
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object_to_uri( $actor['id'] ); |
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} |
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|
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if ( isset( $activity['object']['content'] ) ) { |
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$comment_content = \addslashes( $activity['object']['content'] ); |
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} |
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|
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$commentdata = array( |
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'comment_author' => \esc_attr( $comment_author ), |
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'comment_author_url' => \esc_url_raw( $url ), |
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'comment_content' => $comment_content, |
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'comment_type' => 'comment', |
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'comment_author_email' => '', |
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'comment_meta' => array( |
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'source_id' => \esc_url_raw( object_to_uri( $activity['object'] ) ), |
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'protocol' => 'activitypub', |
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), |
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); |
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|
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if ( isset( $actor['icon']['url'] ) ) { |
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$commentdata['comment_meta']['avatar_url'] = \esc_url_raw( $actor['icon']['url'] ); |
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} |
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|
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if ( isset( $activity['object']['url'] ) ) { |
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$commentdata['comment_meta']['source_url'] = \esc_url_raw( object_to_uri( $activity['object']['url'] ) ); |
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} |
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|
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return $commentdata; |
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} |
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|
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/** |
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* Persist a comment. |
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* |
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* @param array $commentdata The commentdata array. |
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* @param string $action Optional. Either 'insert' or 'update'. Default 'insert'. |
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* |
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* @return array|string|int|\WP_Error|false The comment data or false on failure |
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*/ |
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public static function persist( $commentdata, $action = self::INSERT ) { |
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// Disable flood control. |
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\remove_action( 'check_comment_flood', 'check_comment_flood_db', 10 ); |
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// Do not require email for AP entries. |
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\add_filter( 'pre_option_require_name_email', '__return_false' ); |
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// No nonce possible for this submission route. |
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\add_filter( |
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'akismet_comment_nonce', |
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function () { |
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return 'inactive'; |
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} |
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); |
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\add_filter( 'wp_kses_allowed_html', array( self::class, 'allowed_comment_html' ), 10, 2 ); |
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|
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if ( self::INSERT === $action ) { |
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$state = \wp_new_comment( $commentdata, true ); |
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} else { |
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$state = \wp_update_comment( $commentdata, true ); |
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} |
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|
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\remove_filter( 'wp_kses_allowed_html', array( self::class, 'allowed_comment_html' ), 10 ); |
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\remove_filter( 'pre_option_require_name_email', '__return_false' ); |
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// Restore flood control. |
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\add_action( 'check_comment_flood', 'check_comment_flood_db', 10, 4 ); |
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|
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if ( 1 === $state ) { |
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return $commentdata; |
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} else { |
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return $state; // Either WP_Comment, false, a WP_Error, 0, or 1! |
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} |
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} |
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} |
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|
