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<?php
/**
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @copyright Copyright (c) 2016, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Repair;
use OCP\IDBConnection;
use OCP\IGroupManager;
use OCP\Migration\IOutput;
use OCP\Migration\IRepairStep;
use OCP\Share;
class OldGroupMembershipShares implements IRepairStep {
/** @var \OCP\IDBConnection */
protected $connection;
/** @var \OCP\IGroupManager */
protected $groupManager;
/**
* @var array [gid => [uid => (bool)]]
*/
protected $memberships;
/**
* @param IDBConnection $connection
* @param IGroupManager $groupManager
*/
public function __construct(IDBConnection $connection, IGroupManager $groupManager) {
$this->connection = $connection;
$this->groupManager = $groupManager;
}
/**
* Returns the step's name
*
* @return string
*/
public function getName() {
return 'Remove shares of old group memberships';
}
/**
* Run repair step.
* Must throw exception on error.
*
* @throws \Exception in case of failure
*/
public function run(IOutput $output) {
$deletedEntries = 0;
$query = $this->connection->getQueryBuilder();
$query->select('s1.id')->selectAlias('s1.share_with', 'user')->selectAlias('s2.share_with', 'group')
->from('share', 's1')
->where($query->expr()->isNotNull('s1.parent'))
// \OC\Share\Constant::$shareTypeGroupUserUnique === 2
->andWhere($query->expr()->eq('s1.share_type', $query->expr()->literal(2)))
->andWhere($query->expr()->isNotNull('s2.id'))
->andWhere($query->expr()->eq('s2.share_type', $query->expr()->literal(Share::SHARE_TYPE_GROUP)))
->leftJoin('s1', 'share', 's2', $query->expr()->eq('s1.parent', 's2.id'));
$deleteQuery = $this->connection->getQueryBuilder();
$deleteQuery->delete('share')
->where($query->expr()->eq('id', $deleteQuery->createParameter('share')));
$result = $query->execute();
while ($row = $result->fetch()) {
if (!$this->isMember($row['group'], $row['user'])) {
$deletedEntries += $deleteQuery->setParameter('share', (int) $row['id'])
->execute();
}
}
$result->closeCursor();
if ($deletedEntries) {
$output->info('Removed ' . $deletedEntries . ' shares where user is not a member of the group anymore');
}
}
/**
* @param string $gid
* @param string $uid
* @return bool
*/
protected function isMember($gid, $uid) {
if (isset($this->memberships[$gid][$uid])) {
return $this->memberships[$gid][$uid];
}
$isMember = $this->groupManager->isInGroup($uid, $gid);
if (!isset($this->memberships[$gid])) {
$this->memberships[$gid] = [];
}
$this->memberships[$gid][$uid] = $isMember;
return $isMember;
}
}
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