162 lines
3.7 KiB
PHP
162 lines
3.7 KiB
PHP
<?php
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/**
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* ActivityPub Actors REST-Class
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*
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* @package Activitypub
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*/
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namespace Activitypub\Rest;
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use WP_REST_Server;
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use WP_REST_Request;
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use WP_REST_Response;
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use Activitypub\Webfinger;
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use Activitypub\Collection\Users as User_Collection;
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use function Activitypub\is_activitypub_request;
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/**
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* ActivityPub Actors REST-Class.
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*
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* @author Matthias Pfefferle
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*
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* @see https://www.w3.org/TR/activitypub/#followers
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*/
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class Actors {
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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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self::register_routes();
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}
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/**
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* Register routes.
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*/
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public static function register_routes() {
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\register_rest_route(
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ACTIVITYPUB_REST_NAMESPACE,
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'/(users|actors)/(?P<user_id>[\w\-\.]+)',
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array(
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array(
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'methods' => WP_REST_Server::READABLE,
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'callback' => array( self::class, 'get' ),
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'args' => self::request_parameters(),
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'permission_callback' => '__return_true',
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),
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)
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);
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\register_rest_route(
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ACTIVITYPUB_REST_NAMESPACE,
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'/(users|actors)/(?P<user_id>[\w\-\.]+)/remote-follow',
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array(
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array(
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'methods' => WP_REST_Server::READABLE,
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'callback' => array( self::class, 'remote_follow_get' ),
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'permission_callback' => '__return_true',
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'args' => array(
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'resource' => array(
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'required' => true,
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'sanitize_callback' => 'sanitize_text_field',
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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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/**
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* Handle GET request
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*
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* @param \WP_REST_Request $request The request object.
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*
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* @return WP_REST_Response|\WP_Error The response object or WP_Error.
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*/
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public static function get( $request ) {
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$user_id = $request->get_param( 'user_id' );
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$user = User_Collection::get_by_various( $user_id );
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if ( is_wp_error( $user ) ) {
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return $user;
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}
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$link_header = sprintf( '<%1$s>; rel="alternate"; type="application/activity+json"', $user->get_id() );
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// Redirect to canonical URL if it is not an ActivityPub request.
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if ( ! is_activitypub_request() ) {
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header( 'Link: ' . $link_header );
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header( 'Location: ' . $user->get_canonical_url(), true, 301 );
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exit;
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}
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/**
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* Action triggered prior to the ActivityPub profile being created and sent to the client.
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*/
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\do_action( 'activitypub_rest_users_pre' );
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$json = $user->to_array();
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$rest_response = new WP_REST_Response( $json, 200 );
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$rest_response->header( 'Content-Type', 'application/activity+json; charset=' . get_option( 'blog_charset' ) );
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$rest_response->header( 'Link', $link_header );
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return $rest_response;
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}
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/**
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* Endpoint for remote follow UI/Block.
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*
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* @param WP_REST_Request $request The request object.
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*
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* @return WP_REST_Response|\WP_Error The response object or WP_Error.
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*/
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public static function remote_follow_get( WP_REST_Request $request ) {
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$resource = $request->get_param( 'resource' );
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$user_id = $request->get_param( 'user_id' );
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$user = User_Collection::get_by_various( $user_id );
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if ( is_wp_error( $user ) ) {
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return $user;
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}
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$template = Webfinger::get_remote_follow_endpoint( $resource );
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if ( is_wp_error( $template ) ) {
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return $template;
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}
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$resource = $user->get_webfinger();
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$url = str_replace( '{uri}', $resource, $template );
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return new WP_REST_Response(
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array(
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'url' => $url,
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'template' => $template,
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),
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200
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);
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}
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/**
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* The supported parameters.
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*
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* @return array List of parameters,
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*/
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public static function request_parameters() {
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$params = array();
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$params['page'] = array(
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'type' => 'string',
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);
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$params['user_id'] = array(
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'required' => true,
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'type' => 'string',
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);
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return $params;
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}
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}
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