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