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<?php |
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namespace Activitypub; |
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|
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use Exception; |
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use Activitypub\Signature; |
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use Activitypub\Collection\Users; |
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use Activitypub\Collection\Followers; |
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|
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use function Activitypub\sanitize_url; |
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|
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/** |
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* ActivityPub Class |
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* |
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* @author Matthias Pfefferle |
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*/ |
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class Activitypub { |
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/** |
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* Initialize the class, registering WordPress hooks. |
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*/ |
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public static function init() { |
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\add_filter( 'template_include', array( self::class, 'render_json_template' ), 99 ); |
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\add_filter( 'query_vars', array( self::class, 'add_query_vars' ) ); |
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\add_filter( 'pre_get_avatar_data', array( self::class, 'pre_get_avatar_data' ), 11, 2 ); |
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\add_filter( 'get_comment_link', array( self::class, 'remote_comment_link' ), 11, 3 ); |
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|
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// Add support for ActivityPub to custom post types |
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$post_types = \get_option( 'activitypub_support_post_types', array( 'post', 'page' ) ) ? \get_option( 'activitypub_support_post_types', array( 'post', 'page' ) ) : array(); |
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|
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foreach ( $post_types as $post_type ) { |
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\add_post_type_support( $post_type, 'activitypub' ); |
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} |
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|
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\add_action( 'wp_trash_post', array( self::class, 'trash_post' ), 1 ); |
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\add_action( 'untrash_post', array( self::class, 'untrash_post' ), 1 ); |
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|
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\add_action( 'init', array( self::class, 'add_rewrite_rules' ), 11 ); |
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|
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\add_action( 'after_setup_theme', array( self::class, 'theme_compat' ), 99 ); |
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|
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\add_action( 'in_plugin_update_message-' . ACTIVITYPUB_PLUGIN_BASENAME, array( self::class, 'plugin_update_message' ) ); |
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|
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// register several post_types |
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self::register_post_types(); |
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} |
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|
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/** |
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* Activation Hook |
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* |
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* @return void |
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*/ |
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public static function activate() { |
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self::flush_rewrite_rules(); |
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|
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Scheduler::register_schedules(); |
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} |
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|
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/** |
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* Deactivation Hook |
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* |
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* @return void |
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*/ |
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public static function deactivate() { |
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self::flush_rewrite_rules(); |
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Scheduler::deregister_schedules(); |
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} |
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|
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/** |
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* Uninstall Hook |
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* |
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* @return void |
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*/ |
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public static function uninstall() { |
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Scheduler::deregister_schedules(); |
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} |
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|
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/** |
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* Return a AS2 JSON version of an author, post or page. |
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* |
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* @param string $template The path to the template object. |
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* |
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* @return string The new path to the JSON template. |
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*/ |
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public static function render_json_template( $template ) { |
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if ( defined( 'REST_REQUEST' ) && REST_REQUEST ) { |
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return $template; |
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} |
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|
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if ( ! is_activitypub_request() ) { |
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return $template; |
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} |
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|
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$json_template = false; |
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|
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// check if user can publish posts |
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if ( \is_author() && is_wp_error( Users::get_by_id( \get_the_author_meta( 'ID' ) ) ) ) { |
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return $template; |
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} |
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|
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if ( \is_author() ) { |
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$json_template = ACTIVITYPUB_PLUGIN_DIR . '/templates/author-json.php'; |
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} elseif ( \is_singular() ) { |
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$json_template = ACTIVITYPUB_PLUGIN_DIR . '/templates/post-json.php'; |
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} elseif ( \is_home() ) { |
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$json_template = ACTIVITYPUB_PLUGIN_DIR . '/templates/blog-json.php'; |
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} |
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|
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if ( ACTIVITYPUB_AUTHORIZED_FETCH ) { |
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$verification = Signature::verify_http_signature( $_SERVER ); |
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if ( \is_wp_error( $verification ) ) { |
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// fallback as template_loader can't return http headers |
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return $template; |
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} |
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} |
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|
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return $json_template; |
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} |
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|
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/** |
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* Add the 'activitypub' query variable so WordPress won't mangle it. |
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*/ |
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public static function add_query_vars( $vars ) { |
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$vars[] = 'activitypub'; |
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|
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return $vars; |
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} |
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|
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/** |
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* Replaces the default avatar. |
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* |
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* @param array $args Arguments passed to get_avatar_data(), after processing. |
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* @param int|string|object $id_or_email A user ID, email address, or comment object. |
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* |
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* @return array $args |
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*/ |
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public static function pre_get_avatar_data( $args, $id_or_email ) { |
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if ( |
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! $id_or_email instanceof \WP_Comment || |
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! isset( $id_or_email->comment_type ) || |
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$id_or_email->user_id |
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) { |
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return $args; |
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} |
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|
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$allowed_comment_types = \apply_filters( 'get_avatar_comment_types', array( 'comment' ) ); |
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if ( |
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! empty( $id_or_email->comment_type ) && |
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! \in_array( |
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$id_or_email->comment_type, |
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(array) $allowed_comment_types, |
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true |
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) |
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) { |
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$args['url'] = false; |
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/** This filter is documented in wp-includes/link-template.php */ |
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return \apply_filters( 'get_avatar_data', $args, $id_or_email ); |
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} |
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|
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// Check if comment has an avatar. |
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$avatar = self::get_avatar_url( $id_or_email->comment_ID ); |
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|
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if ( $avatar ) { |
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if ( ! isset( $args['class'] ) || ! \is_array( $args['class'] ) ) { |
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$args['class'] = array( 'u-photo' ); |
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} else { |
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$args['class'][] = 'u-photo'; |
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$args['class'] = \array_unique( $args['class'] ); |
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} |
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$args['url'] = $avatar; |
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$args['class'][] = 'avatar-activitypub'; |
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} |
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|
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return $args; |
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} |
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|
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/** |
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* Function to retrieve Avatar URL if stored in meta. |
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* |
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* @param int|WP_Comment $comment |
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* |
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* @return string $url |
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*/ |
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public static function get_avatar_url( $comment ) { |
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if ( \is_numeric( $comment ) ) { |
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$comment = \get_comment( $comment ); |
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} |
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return \get_comment_meta( $comment->comment_ID, 'avatar_url', true ); |
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} |
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|
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/** |
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* Link remote comments to source url. |
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* |
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* @param string $comment_link |
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* @param object|WP_Comment $comment |
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* |
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* @return string $url |
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*/ |
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public static function remote_comment_link( $comment_link, $comment ) { |
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$remote_comment_link = get_comment_meta( $comment->comment_ID, 'source_url', true ); |
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if ( $remote_comment_link ) { |
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$comment_link = esc_url( $remote_comment_link ); |
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} |
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return $comment_link; |
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} |
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|
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/** |
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* Store permalink in meta, to send delete Activity. |
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* |
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* @param string $post_id The Post ID. |
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* |
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* @return void |
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*/ |
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public static function trash_post( $post_id ) { |
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\add_post_meta( |
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$post_id, |
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'activitypub_canonical_url', |
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\get_permalink( $post_id ), |
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true |
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); |
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} |
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|
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/** |
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* Delete permalink from meta |
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* |
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* @param string $post_id The Post ID |
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* |
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* @return void |
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*/ |
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public static function untrash_post( $post_id ) { |
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\delete_post_meta( $post_id, 'activitypub_canonical_url' ); |
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} |
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|
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/** |
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* Add rewrite rules |
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*/ |
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public static function add_rewrite_rules() { |
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// If another system needs to take precedence over the ActivityPub rewrite rules, |
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// they can define their own and will manually call the appropriate functions as required. |
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if ( ACTIVITYPUB_DISABLE_REWRITES ) { |
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return; |
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} |
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|
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if ( ! \class_exists( 'Webfinger' ) ) { |
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\add_rewrite_rule( |
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'^.well-known/webfinger', |
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'index.php?rest_route=/' . ACTIVITYPUB_REST_NAMESPACE . '/webfinger', |
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'top' |
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); |
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} |
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|
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if ( ! \class_exists( 'Nodeinfo_Endpoint' ) && true === (bool) \get_option( 'blog_public', 1 ) ) { |
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\add_rewrite_rule( |
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'^.well-known/nodeinfo', |
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'index.php?rest_route=/' . ACTIVITYPUB_REST_NAMESPACE . '/nodeinfo/discovery', |
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'top' |
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); |
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\add_rewrite_rule( |
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'^.well-known/x-nodeinfo2', |
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'index.php?rest_route=/' . ACTIVITYPUB_REST_NAMESPACE . '/nodeinfo2', |
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'top' |
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); |
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} |
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|
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\add_rewrite_rule( |
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'^@([\w\-\.]+)', |
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'index.php?rest_route=/' . ACTIVITYPUB_REST_NAMESPACE . '/users/$matches[1]', |
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'top' |
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); |
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|
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\add_rewrite_endpoint( 'activitypub', EP_AUTHORS | EP_PERMALINK | EP_PAGES ); |
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} |
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|
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/** |
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* Flush rewrite rules; |
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*/ |
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public static function flush_rewrite_rules() { |
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self::add_rewrite_rules(); |
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\flush_rewrite_rules(); |
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} |
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|
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/** |
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* Theme compatibility stuff |
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* |
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* @return void |
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*/ |
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public static function theme_compat() { |
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$site_icon = get_theme_support( 'custom-logo' ); |
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|
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if ( ! $site_icon ) { |
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// custom logo support |
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add_theme_support( |
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'custom-logo', |
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array( |
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'height' => 80, |
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'width' => 80, |
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) |
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); |
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} |
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|
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$custom_header = get_theme_support( 'custom-header' ); |
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|
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if ( ! $custom_header ) { |
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// This theme supports a custom header |
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$custom_header_args = array( |
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'width' => 1250, |
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'height' => 600, |
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'header-text' => true, |
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); |
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add_theme_support( 'custom-header', $custom_header_args ); |
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} |
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} |
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|
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/** |
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* Display plugin upgrade notice to users |
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* |
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* @param array $data The plugin data |
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* |
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* @return void |
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*/ |
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public static function plugin_update_message( $data ) { |
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if ( ! isset( $data['upgrade_notice'] ) ) { |
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return; |
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} |
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|
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printf( |
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'<div class="update-message">%s</div>', |
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wp_kses( |
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wpautop( $data['upgrade_notice '] ), |
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array( |
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'p' => array(), |
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'a' => array( 'href', 'title' ), |
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'strong' => array(), |
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'em' => array(), |
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) |
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) |
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); |
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} |
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|
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/** |
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* Register the "Followers" Taxonomy |
| 340 |
* |
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* @return void |
| 342 |
*/ |
| 343 |
private static function register_post_types() { |
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register_post_type( |
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Followers::POST_TYPE, |
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array( |
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'labels' => array( |
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'name' => _x( 'Followers', 'post_type plural name', 'activitypub' ), |
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'singular_name' => _x( 'Follower', 'post_type single name', 'activitypub' ), |
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), |
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'public' => false, |
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'hierarchical' => false, |
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'rewrite' => false, |
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'query_var' => false, |
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'delete_with_user' => false, |
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'can_export' => true, |
| 357 |
'supports' => array(), |
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) |
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); |
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|
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register_post_meta( |
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Followers::POST_TYPE, |
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'activitypub_inbox', |
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array( |
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'type' => 'string', |
| 366 |
'single' => true, |
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'sanitize_callback' => 'sanitize_url', |
| 368 |
) |
| 369 |
); |
| 370 |
|
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register_post_meta( |
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Followers::POST_TYPE, |
| 373 |
'activitypub_errors', |
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array( |
| 375 |
'type' => 'string', |
| 376 |
'single' => false, |
| 377 |
'sanitize_callback' => function( $value ) { |
| 378 |
if ( ! is_string( $value ) ) { |
| 379 |
throw new Exception( 'Error message is no valid string' ); |
| 380 |
} |
| 381 |
|
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return esc_sql( $value ); |
| 383 |
}, |
| 384 |
) |
| 385 |
); |
| 386 |
|
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register_post_meta( |
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Followers::POST_TYPE, |
| 389 |
'activitypub_user_id', |
| 390 |
array( |
| 391 |
'type' => 'string', |
| 392 |
'single' => false, |
| 393 |
'sanitize_callback' => function( $value ) { |
| 394 |
return esc_sql( $value ); |
| 395 |
}, |
| 396 |
) |
| 397 |
); |
| 398 |
|
| 399 |
register_post_meta( |
| 400 |
Followers::POST_TYPE, |
| 401 |
'activitypub_actor_json', |
| 402 |
array( |
| 403 |
'type' => 'string', |
| 404 |
'single' => true, |
| 405 |
'sanitize_callback' => function( $value ) { |
| 406 |
return sanitize_text_field( $value ); |
| 407 |
}, |
| 408 |
) |
| 409 |
); |
| 410 |
|
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do_action( 'activitypub_after_register_post_type' ); |
| 412 |
} |
| 413 |
} |
| 414 |
|
