3 * @copyright Copyright (C) 2010-2022, the Friendica project
5 * @license GNU AGPL version 3 or any later version
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU Affero General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Affero General Public License for more details.
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
22 namespace Friendica\Worker;
26 use Friendica\Database\DBA;
27 use Friendica\Core\Logger;
28 use Friendica\Model\Profile;
29 use Friendica\Model\User;
30 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
31 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
32 use Friendica\Util\Network;
33 use Friendica\Util\Strings;
35 /* This class is used to verify the homepage link of a user profile.
36 * To do so, we look for rel="me" links in the given homepage, if one
37 * of them points to the Friendica profile of the user, a verification
38 * mark is added to the link.
40 * To reverse the process, if a homepage link is given, it is displayed
41 * with the rel="me" attribute as well, so that 3rd party tools can
42 * verify the connection between the two pages.
44 * This task will be performed by the worker on a daily basis _and_ every
45 * time the user changes their homepage link. In the first case the priority
46 * of the task is set to LOW, with the second case it is MEDIUM.
48 * rel-me microformat docs https://microformats.org/wiki/rel-me
50 class CheckRelMeProfileLink
52 /* Cheks the homepage of a profile for a rel-me link back to the user profile
54 * @param $uid (int) the UID of the user
56 public static function execute(int $uid)
58 Logger::notice('Verifying the homepage', [$uid]);
59 $homepageUrlVerified = false;
60 $owner = User::getOwnerDataById($uid);
61 Logger::notice(print_r($owner));
62 if (!empty($owner['homepage'])) {
63 $xrd_timeout = DI::config()->get('system', 'xrd_timeout', 20);
64 $curlResult = DI::httpClient()->get($owner['homepage'], $accept_content = HttpClientAccept::HTML, [HttpClientOptions::TIMEOUT => $xrd_timeout]);
65 if ($curlResult->isTimeout()) {
66 Logger::notice('Could not check homepage link of the user because the page loading request timed out.', [$uid, $owner['homepage']]);
68 $content = $curlResult->getBody();
70 Logger::notice('Empty body of the fetched homepage link). Cannot verify the relation to profile of UID %s.', [$uid, $owner['homepage']]);
72 $doc = new DOMDocument();
73 $doc->loadHTML($content);
75 Logger::notice('Could not parse the content');
77 foreach ($doc->getElementsByTagName('a') as $link) {
78 $rel = $link->getAttribute('rel');
80 $href = $link->getAttribute('href');
81 if (strpos($href, 'http')!==false) {
82 if (!$homepageUrlVerified) {
83 $homepageUrlVerified = Strings::compareLink($owner['url'], $href);
89 if ($homepageUrlVerified) {
90 Profile::update(['homepage_verified' => 1], $uid);
91 Logger::notice('Homepage URL verified', [$uid, $owner['homepage']]);
93 Profile::update(['homepage_verified' => 0], $uid);
94 Logger::notice('Homepage URL could not be verified', [$uid, $owner['homepage']]);
99 Logger::notice('The user has no homepage link.', [$uid]);