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 }