gnu-social/plugins/LRDD/lib/lrddmethod/webfinger.php
2013-10-15 00:20:36 +02:00

38 lines
1.2 KiB
PHP

<?php
/**
* Implementation of WebFinger resource discovery (RFC7033)
*
* @category Discovery
* @package GNUsocial
* @author Mikael Nordfeldth <mmn@hethane.se>
* @copyright 2013 Free Software Foundation, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
class LRDDMethod_WebFinger extends LRDDMethod
{
/**
* Simply returns the WebFinger URL over HTTPS at the uri's domain:
* https://{domain}/.well-known/webfinger?resource={uri}
*/
public function discover($uri)
{
if (!Discovery::isAcct($uri)) {
throw new Exception('Bad resource URI: '.$uri);
}
list($user, $domain) = explode('@', parse_url($uri, PHP_URL_PATH));
if (!filter_var($domain, FILTER_VALIDATE_IP)
&& !filter_var(gethostbyname($domain), FILTER_VALIDATE_IP)) {
throw new Exception('Bad resource host.');
}
$link = new XML_XRD_Element_Link(
Discovery::LRDD_REL,
'https://' . $domain . '/.well-known/webfinger?resource={uri}',
Discovery::JRD_MIMETYPE,
true); //isTemplate
return array($link);
}
}