friendica/src/Worker/ExpireAndRemoveUsers.php

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<?php
/**
* @copyright Copyright (C) 2020, Friendica
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Worker;
use Friendica\Database\DBA;
use Friendica\Database\DBStructure;
use Friendica\Model\Photo;
use Friendica\Model\User;
/**
* Expire and remove user entries
*/
class ExpireAndRemoveUsers
{
public static function execute()
{
// expire any expired regular accounts. Don't expire forums.
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$condition = ["NOT `account_expired` AND `account_expires_on` > ? AND `account_expires_on` < UTC_TIMESTAMP() AND `page-flags` = ? AND `uid` != ?",
DBA::NULL_DATETIME, User::PAGE_FLAGS_NORMAL, 0];
DBA::update('user', ['account_expired' => true], $condition);
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// Ensure to never remove the user with uid=0
DBA::update('user', ['account_expired' => false, 'account_removed' => false,
'account_expires_on' => DBA::NULL_DATETIME], ['uid' => 0]);
// Remove any freshly expired account
$users = DBA::select('user', ['uid'], ['account_expired' => true, 'account_removed' => false]);
while ($user = DBA::fetch($users)) {
User::remove($user['uid']);
}
DBA::close($users);
// delete user records for recently removed accounts
$users = DBA::select('user', ['uid'], ["`account_removed` AND `account_expires_on` < UTC_TIMESTAMP() "]);
while ($user = DBA::fetch($users)) {
// Delete the contacts of this user
$self = DBA::selectFirst('contact', ['nurl'], ['self' => true, 'uid' => $user['uid']]);
if (DBA::isResult($self)) {
DBA::delete('contact', ['nurl' => $self['nurl'], 'self' => false]);
}
// We have to delete photo entries by hand because otherwise the photo data won't be deleted
Photo::delete(['uid' => $user['uid']]);
// These tables contain the permissionset which will also be deleted when a user is deleted.
// It seems that sometimes the system wants to delete the records in the wrong order.
// So when the permissionset is deleted and these tables are still filled then an error is thrown.
// So we now delete them before all other user related entries are deleted.
if (DBStructure::existsTable('item')) {
DBA::delete('item', ['uid' => $user['uid']]);
}
DBA::delete('post-user', ['uid' => $user['uid']]);
DBA::delete('profile_field', ['uid' => $user['uid']]);
DBA::delete('user', ['uid' => $user['uid']]);
}
DBA::close($users);
}
}