* @copyright 2010 StatusNet, Inc. * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0 * @link http://status.net/ */ class LRDDMethod_HostMeta extends LRDDMethod { /** * For RFC6415 and HTTP URIs, fetch the host-meta file * and look for LRDD templates */ public function discover($uri) { // This is allowed for RFC6415 but not the 'WebFinger' RFC7033. $try_schemes = array('https', 'http'); $scheme = mb_strtolower(parse_url($uri, PHP_URL_SCHEME)); switch ($scheme) { case 'acct': if (!Discovery::isAcct($uri)) { throw new Exception('Bad resource URI: '.$uri); } // We can't use parse_url data for this, since the 'host' // entry is only set if the scheme has '://' after it. list($user, $domain) = explode('@', parse_url($uri, PHP_URL_PATH)); break; case 'http': case 'https': $domain = mb_strtolower(parse_url($uri, PHP_URL_HOST)); $try_schemes = array($scheme); break; default: throw new Exception('Unable to discover resource descriptor endpoint.'); } foreach ($try_schemes as $scheme) { $url = $scheme . '://' . $domain . '/.well-known/host-meta'; try { $response = self::fetchUrl($url); $this->xrd->loadString($response->getBody()); } catch (Exception $e) { common_debug('LRDD could not load resource descriptor: '.$url.' ('.$e->getMessage().')'); continue; } return $this->xrd->links; } throw new Exception('Unable to retrieve resource descriptor links.'); } }