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[friendica.git] / src / Worker / ExpireAndRemoveUsers.php
1 <?php
2 /**
3  * @copyright Copyright (C) 2010-2021, 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\Worker;
23
24 use Friendica\Database\DBA;
25 use Friendica\Database\DBStructure;
26 use Friendica\Model\Photo;
27 use Friendica\Model\User;
28
29 /**
30  * Expire and remove user entries
31  */
32 class ExpireAndRemoveUsers
33 {
34         public static function execute()
35         {
36                 // expire any expired regular accounts. Don't expire forums.
37                 $condition = ["NOT `account_expired` AND `account_expires_on` > ? AND `account_expires_on` < UTC_TIMESTAMP() AND `page-flags` = ? AND `uid` != ?",
38                         DBA::NULL_DATETIME, User::PAGE_FLAGS_NORMAL, 0];
39                 DBA::update('user', ['account_expired' => true], $condition);
40
41                 // Ensure to never remove the user with uid=0
42                 DBA::update('user', ['account_expired' => false, 'account_removed' => false,
43                         'account_expires_on' => DBA::NULL_DATETIME], ['uid' => 0]);
44
45                 // Remove any freshly expired account
46                 $users = DBA::select('user', ['uid'], ['account_expired' => true, 'account_removed' => false]);
47                 while ($user = DBA::fetch($users)) {
48                         if ($user['uid'] != 0) {
49                                 User::remove($user['uid']);
50                         }
51                 }
52                 DBA::close($users);
53
54                 // delete user records for recently removed accounts
55                 $users = DBA::select('user', ['uid'], ["`account_removed` AND `account_expires_on` < UTC_TIMESTAMP()  AND `uid` != ?", 0]);
56                 while ($user = DBA::fetch($users)) {
57                         // We have to delete photo entries by hand because otherwise the photo data won't be deleted
58                         Photo::delete(['uid' => $user['uid']]);
59
60                         // Delete the contacts of this user
61                         $self = DBA::selectFirst('contact', ['nurl'], ['self' => true, 'uid' => $user['uid']]);
62                         if (DBA::isResult($self)) {
63                                 DBA::delete('contact', ['nurl' => $self['nurl'], 'self' => false]);
64                         }
65
66                         // Delete all contacts of this user
67                         DBA::delete('contact', ['uid' => $user['uid']]);
68
69                         // These tables contain the permissionset which will also be deleted when a user is deleted.
70                         // It seems that sometimes the system wants to delete the records in the wrong order.
71                         // So when the permissionset is deleted and these tables are still filled then an error is thrown.
72                         // So we now delete them before all other user related entries are deleted.
73                         if (DBStructure::existsTable('item')) {
74                                 DBA::delete('item', ['uid' => $user['uid']]);
75                         }
76                         DBA::delete('post-user', ['uid' => $user['uid']]);
77                         DBA::delete('profile_field', ['uid' => $user['uid']]);
78
79                         DBA::delete('user', ['uid' => $user['uid']]);
80                 }
81                 DBA::close($users);
82         }
83 }