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[friendica.git] / src / Module / WellKnown / XSocialRelay.php
1 <?php
2 /**
3  * @copyright Copyright (C) 2010-2022, the Friendica project
4  *
5  * @license GNU AGPL version 3 or any later version
6  *
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.
11  *
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.
16  *
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/>.
19  *
20  */
21
22 namespace Friendica\Module\WellKnown;
23
24 use Friendica\BaseModule;
25 use Friendica\DI;
26 use Friendica\Model\Search;
27 use Friendica\Protocol\Relay;
28
29 /**
30  * Node subscription preferences for social realy systems
31  * @see https://git.feneas.org/jaywink/social-relay/blob/master/docs/relays.md
32  */
33 class XSocialRelay extends BaseModule
34 {
35         protected function rawContent(array $request = [])
36         {
37                 $config = DI::config();
38
39                 $scope = $config->get('system', 'relay_scope');
40
41                 $systemTags = [];
42                 $userTags = [];
43
44                 if ($scope == Relay::SCOPE_TAGS) {
45                         $server_tags = $config->get('system', 'relay_server_tags');
46                         $tagitems = explode(',', $server_tags);
47
48                         /// @todo Check if it was better to use "strtolower" on the tags
49                         foreach ($tagitems as $tag) {
50                                 $systemTags[] = trim($tag, '# ');
51                         }
52
53                         if ($config->get('system', 'relay_user_tags')) {
54                                 $userTags = Search::getUserTags();
55                         }
56                 }
57
58                 $tagList = array_unique(array_merge($systemTags, $userTags));
59
60                 $relay = [
61                         'subscribe' => ($scope != Relay::SCOPE_NONE),
62                         'scope'     => $scope,
63                         'tags'      => $tagList,
64                         'protocols' => [
65                                 'activitypub' => [
66                                         'actor' => DI::baseUrl()->get() . '/friendica',
67                                         'receive' => DI::baseUrl()->get() . '/inbox'
68                                 ],
69                                 'dfrn'     => [
70                                         'receive' => DI::baseUrl()->get() . '/dfrn_notify'
71                                 ]
72                         ]
73                 ];
74
75                 if (DI::config()->get("system", "diaspora_enabled")) {
76                         $relay['protocols']['diaspora'] = ['receive' => DI::baseUrl()->get() . '/receive/public'];
77                 }
78
79                 header('Content-type: application/json; charset=utf-8');
80                 echo json_encode($relay, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
81                 exit;
82         }
83 }