65 lines
2.1 KiB
PHP
65 lines
2.1 KiB
PHP
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<?php
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// GNU social is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
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namespace Component\FreeNetwork\Util\LrddMethod;
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use Component\FreeNetwork\Util\Discovery;
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use Component\FreeNetwork\Util\LrddMethod;
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use Exception;
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use XML_XRD_Element_Link;
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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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*
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* @author Mikael Nordfeldth <mmn@hethane.se>
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* @copyright 2013 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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class LrddMethodWebfinger 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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* @param mixed $uri
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*/
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public function discover($uri)
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{
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$parts = explode('@', parse_url($uri, PHP_URL_PATH), 2);
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if (!Discovery::isAcct($uri) || count($parts) != 2) {
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throw new Exception('Bad resource URI: ' . $uri);
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}
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[, $domain] = $parts;
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if (!filter_var($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://' . $domain . '/.well-known/webfinger?resource={uri}',
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Discovery::JRD_MIMETYPE,
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true // isTemplate
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);
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return [$link];
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}
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}
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