laipower/wp-content/plugins/activitypub/includes/collection/class-interactions.php

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