id ) ) {
$caps[] = 'do_not_allow';
}
}
return $caps;
}
/**
* Filter the comment reply link.
*
* Handles three cases for replies to fediverse comments:
* 1. User can federate → show normal reply link
* 2. User is logged in but can't federate → show warning (no reply link)
* 3. User is not logged in → show remote reply block
*
* @param string $link The HTML markup for the comment reply link.
* @param array $args An array of arguments overriding the defaults.
* @param \WP_Comment $comment The object of the comment being replied.
*
* @return string The filtered HTML markup for the comment reply link.
*/
public static function comment_reply_link( $link, $args, $comment ) {
if ( self::are_comments_allowed( $comment ) ) {
return $link;
}
// Logged-in user without ActivityPub capability - show warning instead of reply link.
if ( \is_user_logged_in() ) {
$author = \esc_html( $comment->comment_author );
$message = sprintf(
/* translators: %s: comment author name */
\__( '%s is on the Fediverse. To reply to them, ask your administrator to enable ActivityPub for your account.', 'activitypub' ),
$author
);
// Add link to users page if current user can edit users.
if ( \current_user_can( 'edit_users' ) ) {
$message = sprintf(
/* translators: 1: comment author name, 2: URL to the users management page */
\__( '%1$s is on the Fediverse. To reply to them, enable ActivityPub for your account.', 'activitypub' ),
$author,
\esc_url( \admin_url( 'users.php' ) )
);
}
$warning = sprintf(
'%s
',
\wp_kses( $message, array( 'a' => array( 'href' => array() ) ) )
);
/**
* Filters the warning message shown to logged-in users without ActivityPub capability.
*
* @param string $warning The warning HTML markup.
* @param \WP_Comment $comment The comment being replied to.
*/
return \apply_filters( 'activitypub_federation_warning', $warning, $comment );
}
if ( ! \WP_Block_Type_Registry::get_instance()->is_registered( 'activitypub/remote-reply' ) ) {
\register_block_type_from_metadata( ACTIVITYPUB_PLUGIN_DIR . 'build/remote-reply' );
}
$attributes = array(
'selectedComment' => self::generate_id( $comment ),
'commentId' => $comment->comment_ID,
);
$block = \do_blocks( \sprintf( '', \wp_json_encode( $attributes ) ) );
/**
* Filters the HTML markup for the ActivityPub remote comment reply container.
*
* @param string $block The HTML markup for the remote reply container.
*/
return \apply_filters( 'activitypub_comment_reply_link', $block );
}
/**
* Check if it is allowed to comment to a comment.
*
* Checks if the comment is local only or if the user can comment federated comments.
*
* @param mixed $comment Comment object or ID.
*
* @return boolean True if the user can comment, false otherwise.
*/
public static function are_comments_allowed( $comment ) {
$comment = \get_comment( $comment );
if ( ! self::was_received( $comment ) ) {
return true;
}
$current_user = get_current_user_id();
if ( ! $current_user ) {
return false;
}
if ( is_single_user() && \user_can( $current_user, 'activitypub' ) ) {
// On a single user site, comments by users with the `activitypub` capability will be federated as the blog user.
$current_user = Actors::BLOG_USER_ID;
}
// User is not allowed to federate comments.
return user_can_activitypub( $current_user );
}
/**
* Check if a comment is federated.
*
* We consider a comment federated if comment was received via ActivityPub.
*
* Use this function to check if it is comment that was received via ActivityPub.
*
* @param mixed $comment Comment object or ID.
*
* @return boolean True if the comment is federated, false otherwise.
*/
public static function was_received( $comment ) {
$comment = \get_comment( $comment );
if ( ! $comment ) {
return false;
}
$protocol = \get_comment_meta( $comment->comment_ID, 'protocol', true );
if ( 'activitypub' === $protocol ) {
return true;
}
return false;
}
/**
* Check if a comment was federated.
*
* This function checks if a comment was federated via ActivityPub.
*
* @param mixed $comment Comment object or ID.
*
* @return boolean True if the comment was federated, false otherwise.
*/
public static function was_sent( $comment ) {
$comment = \get_comment( $comment );
if ( ! $comment ) {
return false;
}
$status = \get_comment_meta( $comment->comment_ID, 'activitypub_status', true );
if ( $status ) {
return true;
}
return false;
}
/**
* Check if a comment is local only.
*
* This function checks if a comment is local only and was not sent or received via ActivityPub.
*
* @param mixed $comment Comment object or ID.
*
* @return boolean True if the comment is local only, false otherwise.
*/
public static function is_local( $comment ) {
if ( self::was_sent( $comment ) || self::was_received( $comment ) ) {
return false;
}
return true;
}
/**
* Check if a comment should be federated.
*
* We consider a comment should be federated if it is authored by a user that is
* not disabled for federation and if it is a reply directly to the post or to a
* federated comment.
*
* Use this function to check if a comment should be federated.
*
* @param mixed $comment Comment object or ID.
*
* @return boolean True if the comment should be federated, false otherwise.
*/
public static function should_be_federated( $comment ) {
// We should not federate federated comments.
if ( self::was_received( $comment ) ) {
return false;
}
$comment = \get_comment( $comment );
$user_id = $comment->user_id;
// Comments without user can't be federated.
if ( ! $user_id ) {
return false;
}
if ( is_single_user() && \user_can( $user_id, 'activitypub' ) ) {
// On a single user site, comments by users with the `activitypub` capability will be federated as the blog user.
$user_id = Actors::BLOG_USER_ID;
}
// User is not allowed to federate comments.
if ( ! user_can_activitypub( $user_id ) ) {
return false;
}
// It is a comment to the post and can be federated.
if ( empty( $comment->comment_parent ) ) {
return true;
}
// Check if parent comment is federated.
$parent_comment = \get_comment( $comment->comment_parent );
return ! self::is_local( $parent_comment );
}
/**
* Examine a comment ID and look up an existing comment it represents.
*
* @param string $id ActivityPub object ID (usually a URL) to check.
*
* @return \WP_Comment|false Comment object, or false on failure.
*/
public static function object_id_to_comment( $id ) {
$comment_query = new \WP_Comment_Query(
array(
'meta_key' => 'source_id', // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_key
'meta_value' => $id, // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_value
'orderby' => 'comment_date',
'order' => 'DESC',
)
);
if ( ! $comment_query->comments ) {
return false;
}
return $comment_query->comments[0];
}
/**
* Verify if URL is a local comment, or if it is a previously received
* remote comment (For threading comments locally).
*
* @param string $url The URL to check.
*
* @return string|null Comment ID or null if not found.
*/
public static function url_to_commentid( $url ) {
if ( ! $url || ! \filter_var( $url, \FILTER_VALIDATE_URL ) ) {
return null;
}
// Check for local comment.
if ( is_same_domain( $url ) ) {
$query = \wp_parse_url( $url, \PHP_URL_QUERY );
if ( $query ) {
\parse_str( $query, $params );
if ( ! empty( $params['c'] ) ) {
$comment = \get_comment( $params['c'] );
if ( $comment ) {
return $comment->comment_ID;
}
}
}
}
$args = array(
// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query
'meta_query' => array(
'relation' => 'OR',
array(
'key' => 'source_url',
'value' => $url,
),
array(
'key' => 'source_id',
'value' => $url,
),
),
);
$query = new \WP_Comment_Query();
$comments = $query->query( $args );
if ( $comments && is_array( $comments ) ) {
return $comments[0]->comment_ID;
}
return null;
}
/**
* Filters the CSS classes to add an ActivityPub class.
*
* @param string[] $classes An array of comment classes.
* @param string[] $css_class An array of additional classes added to the list.
* @param string $comment_id The comment ID as a numeric string.
*
* @return string[] An array of classes.
*/
public static function comment_class( $classes, $css_class, $comment_id ) {
// Check if ActivityPub comment.
if ( 'activitypub' === get_comment_meta( $comment_id, 'protocol', true ) ) {
$classes[] = 'activitypub-comment';
}
return $classes;
}
/**
* Makes the comment feed filterable by comment type.
*
* Also excludes ActivityPub comment types from the feed when no type is specified.
*
* @param string $where The `WHERE` clause for the comment feed query.
*
* @return string The modified `WHERE` clause.
*/
public static function comment_feed_where( $where ) {
global $wpdb;
$comment_type = \get_query_var( 'type' );
if ( 'all' === $comment_type ) {
return $where;
}
$comment_types = self::get_comment_type_slugs();
if ( \in_array( $comment_type, $comment_types, true ) ) {
$where .= $wpdb->prepare( ' AND comment_type = %s', $comment_type );
} else {
$comment_types = \array_map( 'esc_sql', $comment_types );
$placeholders = implode( ', ', array_fill( 0, count( $comment_types ), '%s' ) );
// phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber, WordPress.DB.PreparedSQL.NotPrepared
$where .= $wpdb->prepare( sprintf( ' AND comment_type NOT IN (%s)', $placeholders ), ...$comment_types );
}
return $where;
}
/**
* Gets the public comment id via the WordPress comments meta.
*
* @param int $wp_comment_id The internal WordPress comment ID.
* @param bool $fallback Whether the code should fall back to `source_url` if `source_id` is not set.
*
* @return string|null The ActivityPub id/url of the comment.
*/
public static function get_source_id( $wp_comment_id, $fallback = true ) {
$comment_meta = \get_comment_meta( $wp_comment_id );
if ( ! empty( $comment_meta['source_id'][0] ) ) {
return $comment_meta['source_id'][0];
} elseif ( ! empty( $comment_meta['source_url'][0] ) && $fallback ) {
return $comment_meta['source_url'][0];
}
return null;
}
/**
* Gets the public comment url via the WordPress comments meta.
*
* @param int $wp_comment_id The internal WordPress comment ID.
* @param bool $fallback Whether the code should fall back to `source_id` if `source_url` is not set.
*
* @return string|null The ActivityPub id/url of the comment.
*/
public static function get_source_url( $wp_comment_id, $fallback = true ) {
$comment_meta = \get_comment_meta( $wp_comment_id );
if ( ! empty( $comment_meta['source_url'][0] ) ) {
return $comment_meta['source_url'][0];
} elseif ( ! empty( $comment_meta['source_id'][0] ) && $fallback ) {
return $comment_meta['source_id'][0];
}
return null;
}
/**
* Link remote comments to source url.
*
* @param string $comment_link The comment link.
* @param object|\WP_Comment $comment The comment object.
*
* @return string $url
*/
public static function remote_comment_link( $comment_link, $comment ) {
if ( ! $comment || \is_admin() || \is_search() ) {
return $comment_link;
}
$remote_comment_link = null;
if ( 'comment' === $comment->comment_type ) {
$remote_comment_link = self::get_source_url( $comment->comment_ID );
}
return $remote_comment_link ?? $comment_link;
}
/**
* Generates an ActivityPub URI for a comment
*
* @param \WP_Comment|int $comment A comment object or comment ID.
*
* @return string ActivityPub URI for comment
*/
public static function generate_id( $comment ) {
$comment = \get_comment( $comment );
// Show external comment ID if it exists.
$public_comment_link = self::get_source_id( $comment->comment_ID );
if ( $public_comment_link ) {
return $public_comment_link;
}
// Generate URI based on comment ID.
return \add_query_arg( 'c', $comment->comment_ID, \home_url( '/' ) );
}
/**
* Check if a post has remote comments
*
* @param int $post_id The post ID.
*
* @return bool True if the post has remote comments, false otherwise.
*/
private static function post_has_remote_comments( $post_id ) {
$comments = \get_comments(
array(
'post_id' => $post_id,
// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query
'meta_query' => array(
'relation' => 'AND',
array(
'key' => 'protocol',
'value' => 'activitypub',
'compare' => '=',
),
array(
'key' => 'source_id',
'compare' => 'EXISTS',
),
),
)
);
return ! empty( $comments );
}
/**
* Get the comment type by activity type.
*
* @param string $activity_type The activity type.
*
* @return array|null The comment type.
*/
public static function get_comment_type_by_activity_type( $activity_type ) {
$activity_type = \strtolower( $activity_type );
$activity_type = \sanitize_key( $activity_type );
$comment_types = self::get_comment_types();
foreach ( $comment_types as $comment_type ) {
if ( in_array( $activity_type, $comment_type['activity_types'], true ) ) {
return $comment_type;
}
}
return null;
}
/**
* Return the registered custom comment types.
*
* @return array The registered custom comment types
*/
public static function get_comment_types() {
global $activitypub_comment_types;
return (array) $activitypub_comment_types;
}
/**
* Is this a registered comment type.
*
* @param string $slug The slug of the type.
*
* @return boolean True if registered.
*/
public static function is_registered_comment_type( $slug ) {
$slug = \strtolower( $slug );
$slug = \sanitize_key( $slug );
$comment_types = self::get_comment_types();
return isset( $comment_types[ $slug ] );
}
/**
* Return the registered custom comment type slugs.
*
* @return array The registered custom comment type slugs.
*/
public static function get_comment_type_slugs() {
if ( ! did_action( 'init' ) ) {
_doing_it_wrong( __METHOD__, 'This function should not be called before the init action has run. Comment types are only available after init.', '7.5.0' );
return array();
}
return array_keys( self::get_comment_types() );
}
/**
* Get the custom comment type.
*
* Check if the type is registered, if not, check if it is a custom type.
*
* It looks for the array key in the registered types and returns the array.
* If it is not found, it looks for the type in the custom types and returns the array.
*
* @param string $type The comment type.
*
* @return array The comment type.
*/
public static function get_comment_type( $type ) {
$type = strtolower( $type );
$type = sanitize_key( $type );
$comment_types = self::get_comment_types();
$type_array = array();
// Check array keys.
if ( in_array( $type, array_keys( $comment_types ), true ) ) {
$type_array = $comment_types[ $type ];
}
/**
* Filter the comment type.
*
* @param array $type_array The comment type.
*/
return apply_filters( "activitypub_comment_type_{$type}", $type_array );
}
/**
* Get a comment type attribute.
*
* @param string $type The comment type.
* @param string $attr The attribute to get.
*
* @return mixed The value of the attribute.
*/
public static function get_comment_type_attr( $type, $attr ) {
$type_array = self::get_comment_type( $type );
if ( $type_array && isset( $type_array[ $attr ] ) ) {
$value = $type_array[ $attr ];
} else {
$value = '';
}
/**
* Filter the comment type attribute.
*
* @param mixed $value The value of the attribute.
* @param string $type The comment type.
*/
return apply_filters( "activitypub_comment_type_{$attr}", $value, $type );
}
/**
* Register the comment types used by the ActivityPub plugin.
*/
public static function register_comment_types() {
register_comment_type(
'repost',
array(
'label' => __( 'Reposts', 'activitypub' ),
'singular' => __( 'Repost', 'activitypub' ),
'description' => 'A repost (or Announce) is when a post appears in the timeline because someone else shared it, while still showing the original author as the source.',
'icon' => '♻️',
'class' => 'p-repost',
'type' => 'repost',
'collection' => 'reposts',
'activity_types' => array( 'announce' ),
'excerpt' => html_entity_decode( \__( '… reposted this!', 'activitypub' ) ),
/* translators: %d: Number of reposts */
'count_single' => _x( '%d repost', 'number of reposts', 'activitypub' ),
/* translators: %d: Number of reposts */
'count_plural' => _x( '%d reposts', 'number of reposts', 'activitypub' ),
)
);
register_comment_type(
'like',
array(
'label' => __( 'Likes', 'activitypub' ),
'singular' => __( 'Like', 'activitypub' ),
'description' => 'A like is a small positive reaction that shows appreciation for a post without sharing it further.',
'icon' => '👍',
'class' => 'p-like',
'type' => 'like',
'collection' => 'likes',
'activity_types' => array( 'like' ),
'excerpt' => html_entity_decode( \__( '… liked this!', 'activitypub' ) ),
/* translators: %d: Number of likes */
'count_single' => _x( '%d like', 'number of likes', 'activitypub' ),
/* translators: %d: Number of likes */
'count_plural' => _x( '%d likes', 'number of likes', 'activitypub' ),
)
);
register_comment_type(
'quote',
array(
'label' => __( 'Quotes', 'activitypub' ),
'singular' => __( 'Quote', 'activitypub' ),
'description' => 'A quote is when a post is shared along with an added comment, so the original post appears together with the sharer’s own words.',
'icon' => '❞',
'class' => 'p-quote',
'type' => 'quote',
'collection' => 'quotes',
'activity_types' => array( 'quote' ),
'excerpt' => html_entity_decode( \__( '… quoted this!', 'activitypub' ) ),
/* translators: %d: Number of quotes */
'count_single' => _x( '%d quote', 'number of quotes', 'activitypub' ),
/* translators: %d: Number of quotes */
'count_plural' => _x( '%d quotes', 'number of quotes', 'activitypub' ),
)
);
}
/**
* Show avatars on Activities if set.
*
* @param array $types List of avatar enabled comment types.
*
* @return array show avatars on Activities
*/
public static function get_avatar_comment_types( $types ) {
$comment_types = self::get_comment_type_slugs();
$types = array_merge( $types, $comment_types );
return array_unique( $types );
}
/**
* Excludes likes and reposts from comment queries.
*
* @author Jan Boddez
*
* @see https://github.com/janboddez/indieblocks/blob/a2d59de358031056a649ee47a1332ce9e39d4ce2/includes/functions.php#L423-L432
*
* @param \WP_Comment_Query $query Comment count.
*/
public static function comment_query( $query ) {
if ( ! $query instanceof \WP_Comment_Query ) {
return;
}
// Do not exclude likes and reposts on ActivityPub requests.
if ( defined( 'ACTIVITYPUB_REQUEST' ) && ACTIVITYPUB_REQUEST ) {
return;
}
// Do not exclude likes and reposts on REST requests (handled by rest_comment_query).
if ( \wp_is_serving_rest_request() ) {
return;
}
// Filter post types for admin requests.
if ( \is_admin() ) {
$query->query_vars['post_type'] = self::get_allowed_comment_post_types();
return;
}
// Do not exclude likes and reposts on non-singular pages.
if ( ! \is_singular() ) {
return;
}
// Do not exclude likes and reposts if the query is for specific types.
if ( ! empty( $query->query_vars['type__in'] ) || ! empty( $query->query_vars['type'] ) ) {
return;
}
// Do not exclude likes and reposts if the query is already excluding other comment types.
if ( ! empty( $query->query_vars['type__not_in'] ) ) {
return;
}
// Exclude likes and reposts by the ActivityPub plugin.
$query->query_vars['type__not_in'] = self::get_comment_type_slugs();
}
/**
* Filters comments in REST API requests.
*
* Excludes comments on ActivityPub post types and ActivityPub comment
* types (likes, reposts) from the REST API.
*
* @param array $prepared_args Array of arguments for WP_Comment_Query.
*
* @return array Modified array of arguments.
*/
public static function rest_comment_query( $prepared_args ) {
// Exclude comments on ActivityPub post types.
$prepared_args['post_type'] = self::get_allowed_comment_post_types();
// Exclude ActivityPub comment types (likes, reposts) unless explicitly requested.
if ( empty( $prepared_args['type'] ) && empty( $prepared_args['type__in'] ) ) {
$prepared_args['type__not_in'] = self::get_comment_type_slugs();
}
return $prepared_args;
}
/**
* Returns post types that should show comments (excluding hidden post types).
*
* @return array Array of post type names.
*/
private static function get_allowed_comment_post_types() {
$hide_for = self::hide_for();
if ( empty( $hide_for ) ) {
return \get_post_types_by_support( 'comments' );
}
return \array_diff( \get_post_types_by_support( 'comments' ), $hide_for );
}
/**
* Filter the comment status before it is set.
*
* @param int|string|\WP_Error $approved The approved comment status.
* @param array $comment_data The comment data.
*
* @return int|string|\WP_Error The approval status. 1, 0, 'spam', 'trash', or WP_Error.
*/
public static function pre_comment_approved( $approved, $comment_data ) {
/*
* Only return early for already-approved comments, trash, or errors.
* Don't short-circuit on 'spam' - we may want to override Akismet.
* Respect 'trash' since it comes from the WordPress disallowed list.
*/
if ( 1 === $approved || '1' === $approved || 'trash' === $approved || \is_wp_error( $approved ) ) {
return $approved;
}
// Maybe auto-approve likes and reposts.
if (
\in_array( $comment_data['comment_type'], self::get_comment_type_slugs(), true ) &&
'1' === \get_option( 'activitypub_auto_approve_reactions' )
) {
return 1;
}
/*
* Always auto-approve comments on remote posts (ap_post) since
* they are not visible in the WP admin comment moderation screen.
*/
$post_id = $comment_data['comment_post_ID'];
$post = \get_post( $post_id );
if ( $post && \in_array( $post->post_type, self::hide_for(), true ) ) {
return 1;
}
if ( '1' !== \get_option( 'comment_previously_approved' ) ) {
return $approved;
}
if (
empty( $comment_data['comment_meta']['protocol'] ) ||
'activitypub' !== $comment_data['comment_meta']['protocol']
) {
return $approved;
}
global $wpdb;
$author = $comment_data['comment_author'];
$author_url = $comment_data['comment_author_url'];
// phpcs:ignore
$ok_to_comment = $wpdb->get_var( $wpdb->prepare( "SELECT comment_approved FROM $wpdb->comments WHERE comment_author = %s AND comment_author_url = %s and comment_approved = '1' LIMIT 1", $author, $author_url ) );
if ( 1 === (int) $ok_to_comment ) {
return 1;
}
return $approved;
}
/**
* Update comment counts when interaction settings are disabled.
*
* Triggers a recount when likes or reposts are disabled to ensure accurate comment counts.
*
* @param mixed $old_value The old option value.
* @param mixed $value The new option value.
*/
public static function maybe_update_comment_counts( $old_value, $value ) {
if ( '1' === $old_value && '1' !== $value ) {
Migration::update_comment_counts();
}
}
/**
* Filters the comment count to exclude ActivityPub comment types.
*
* @param int|null $new_count The new comment count. Default null.
* @param int $old_count The old comment count.
* @param int $post_id Post ID.
*
* @return int|null The updated comment count, or null to use the default query.
*/
public static function pre_wp_update_comment_count_now( $new_count, $old_count, $post_id ) {
if ( null === $new_count ) {
$excluded_types = array_filter( self::get_comment_type_slugs(), array( self::class, 'is_comment_type_enabled' ) );
if ( ! empty( $excluded_types ) ) {
/*
* Include 'note' type when Gutenberg's filter is registered, so a
* single query excludes both ActivityPub and Gutenberg types.
*/
if ( \has_filter( 'pre_wp_update_comment_count_now', 'gutenberg_exclude_notes_from_comment_count' ) ) {
$excluded_types[] = 'note';
}
/**
* Filters the comment types excluded from the comment count.
*
* Runs at priority 5 on `pre_wp_update_comment_count_now` so that
* a single query can exclude types from multiple plugins. Other
* plugins can hook here to add their own comment types.
*
* @since 8.0.0
*
* @param string[] $excluded_types The comment type slugs to exclude.
* @param int $post_id The post ID.
*/
$excluded_types = \apply_filters( 'activitypub_excluded_comment_types', $excluded_types, $post_id );
$excluded_types = array_unique( array_filter( $excluded_types ) );
global $wpdb;
// phpcs:ignore WordPress.DB
$new_count = (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_approved = '1' AND comment_type NOT IN ('" . implode( "','", $excluded_types ) . "')", $post_id ) );
}
}
return $new_count;
}
/**
* Check if a comment type is enabled.
*
* @param string $comment_type The comment type.
* @return bool True if the comment type is enabled.
*/
public static function is_comment_type_enabled( $comment_type ) {
return '1' === get_option( "activitypub_allow_{$comment_type}s", '1' );
}
/**
* Get post types to hide comments for in admin.
*
* These are non-public post types whose comments should not appear
* in the main comments list in the WordPress admin.
*
* @return string[] Array of post type names to hide comments for.
*/
public static function hide_for() {
$post_types = array( Remote_Posts::POST_TYPE );
/**
* Filters the list of post types to hide comments for.
*
* @param string[] $post_types Array of post type names to hide comments for.
*/
return \apply_filters( 'activitypub_hide_comments_for', $post_types );
}
/**
* Render emoji in comment author name.
*
* Replaces emoji shortcodes with img tags on the get_comment_author filter.
* Emoji data is retrieved from the linked remote actor.
*
* @param string $author The comment author name.
* @param string $comment_id The comment ID as a numeric string.
*
* @return string The comment author name with rendered emoji.
*/
public static function render_emoji( $author, $comment_id ) {
$remote_actor_id = \get_comment_meta( $comment_id, '_activitypub_remote_actor_id', true );
if ( empty( $remote_actor_id ) ) {
return $author;
}
$emoji_data = \get_post_meta( $remote_actor_id, '_activitypub_emoji', true );
if ( empty( $emoji_data ) ) {
return $author;
}
return Emoji::replace_from_json( $author, $emoji_data );
}
/**
* Selectively unescape emoji images in comment author.
*
* This runs at priority 20 after WordPress's esc_html() filter on comment_author.
*
* @param string $author The comment author name (already escaped by WordPress).
*
* @return string The comment author name with emoji images unescaped.
*/
public static function unescape_emoji( $author ) {
// Only attempt to unescape if there are emoji images present in the escaped string.
if ( false === \strpos( $author, 'class="emoji"' ) ) {
return $author;
}
// Decode entities so we can selectively restore emoji ![]()
tags.
$decoded = \html_entity_decode( $author, ENT_QUOTES | ENT_HTML5, 'UTF-8' );
// Use strict KSES validation to only allow valid emoji img tags.
return \wp_kses( $decoded, Emoji::get_kses_allowed_html() );
}
}