125 lines
3.2 KiB
PHP
125 lines
3.2 KiB
PHP
<?php
|
|
namespace Activitypub\Rest;
|
|
|
|
use WP_Error;
|
|
use WP_REST_Response;
|
|
|
|
/**
|
|
* ActivityPub WebFinger REST-Class
|
|
*
|
|
* @author Matthias Pfefferle
|
|
*
|
|
* @see https://webfinger.net/
|
|
*/
|
|
class Webfinger {
|
|
/**
|
|
* Initialize the class, registering WordPress hooks
|
|
*/
|
|
public static function init() {
|
|
\add_action( 'rest_api_init', array( self::class, 'register_routes' ) );
|
|
\add_action( 'webfinger_user_data', array( self::class, 'add_webfinger_discovery' ), 10, 3 );
|
|
}
|
|
|
|
/**
|
|
* Register routes
|
|
*/
|
|
public static function register_routes() {
|
|
\register_rest_route(
|
|
'activitypub/1.0',
|
|
'/webfinger',
|
|
array(
|
|
array(
|
|
'methods' => \WP_REST_Server::READABLE,
|
|
'callback' => array( self::class, 'webfinger' ),
|
|
'args' => self::request_parameters(),
|
|
'permission_callback' => '__return_true',
|
|
),
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Render JRD file
|
|
*
|
|
* @param WP_REST_Request $request
|
|
* @return WP_REST_Response
|
|
*/
|
|
public static function webfinger( $request ) {
|
|
$resource = $request->get_param( 'resource' );
|
|
|
|
if ( \strpos( $resource, '@' ) === false ) {
|
|
return new WP_Error( 'activitypub_unsupported_resource', \__( 'Resource is invalid', 'activitypub' ), array( 'status' => 400 ) );
|
|
}
|
|
|
|
$resource = \str_replace( 'acct:', '', $resource );
|
|
|
|
$resource_identifier = \substr( $resource, 0, \strrpos( $resource, '@' ) );
|
|
$resource_host = \str_replace( 'www.', '', \substr( \strrchr( $resource, '@' ), 1 ) );
|
|
$blog_host = \str_replace( 'www.', '', \wp_parse_url( \home_url( '/' ), \PHP_URL_HOST ) );
|
|
|
|
if ( $blog_host !== $resource_host ) {
|
|
return new WP_Error( 'activitypub_wrong_host', \__( 'Resource host does not match blog host', 'activitypub' ), array( 'status' => 404 ) );
|
|
}
|
|
|
|
$user = \get_user_by( 'login', \esc_sql( $resource_identifier ) );
|
|
|
|
if ( ! $user || ! \user_can( $user, 'publish_posts' ) ) {
|
|
return new WP_Error( 'activitypub_user_not_found', \__( 'User not found', 'activitypub' ), array( 'status' => 404 ) );
|
|
}
|
|
|
|
$json = array(
|
|
'subject' => $resource,
|
|
'aliases' => array(
|
|
\get_author_posts_url( $user->ID ),
|
|
),
|
|
'links' => array(
|
|
array(
|
|
'rel' => 'self',
|
|
'type' => 'application/activity+json',
|
|
'href' => \get_author_posts_url( $user->ID ),
|
|
),
|
|
array(
|
|
'rel' => 'http://webfinger.net/rel/profile-page',
|
|
'type' => 'text/html',
|
|
'href' => \get_author_posts_url( $user->ID ),
|
|
),
|
|
),
|
|
);
|
|
|
|
return new WP_REST_Response( $json, 200 );
|
|
}
|
|
|
|
/**
|
|
* The supported parameters
|
|
*
|
|
* @return array list of parameters
|
|
*/
|
|
public static function request_parameters() {
|
|
$params = array();
|
|
|
|
$params['resource'] = array(
|
|
'required' => true,
|
|
'type' => 'string',
|
|
'pattern' => '^acct:(.+)@(.+)$',
|
|
);
|
|
|
|
return $params;
|
|
}
|
|
|
|
/**
|
|
* Add WebFinger discovery links
|
|
*
|
|
* @param array $array the jrd array
|
|
* @param string $resource the WebFinger resource
|
|
* @param WP_User $user the WordPress user
|
|
*/
|
|
public static function add_webfinger_discovery( $array, $resource, $user ) {
|
|
$array['links'][] = array(
|
|
'rel' => 'self',
|
|
'type' => 'application/activity+json',
|
|
'href' => \get_author_posts_url( $user->ID ),
|
|
);
|
|
|
|
return $array;
|
|
}
|
|
}
|