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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2020 Arthur Schiwon <blizzz@arthur-schiwon.de>
*
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
*
* @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 <http://www.gnu.org/licenses/>.
*
*/
namespace OC\Repair;
use OCP\DB\Exception;
use OCP\IConfig;
use OCP\IDBConnection;
use OCP\IGroupManager;
use OCP\Migration\IOutput;
use OCP\Migration\IRepairStep;
use Psr\Log\LoggerInterface;
use function strlen;
use function substr;
use function urldecode;
use function urlencode;
class RepairDavShares implements IRepairStep {
protected const GROUP_PRINCIPAL_PREFIX = 'principals/groups/';
/** @var IConfig */
private $config;
/** @var IDBConnection */
private $dbc;
/** @var IGroupManager */
private $groupManager;
/** @var LoggerInterface */
private $logger;
/** @var bool */
private $hintInvalidShares = false;
public function __construct(
IConfig $config,
IDBConnection $dbc,
IGroupManager $groupManager,
LoggerInterface $logger
) {
$this->config = $config;
$this->dbc = $dbc;
$this->groupManager = $groupManager;
$this->logger = $logger;
}
/**
* @inheritDoc
*/
public function getName() {
return 'Repair DAV shares';
}
protected function repairUnencodedGroupShares() {
$qb = $this->dbc->getQueryBuilder();
$qb->select(['id', 'principaluri'])
->from('dav_shares')
->where($qb->expr()->like('principaluri', $qb->createNamedParameter(self::GROUP_PRINCIPAL_PREFIX . '%')));
$updateQuery = $this->dbc->getQueryBuilder();
$updateQuery->update('dav_shares')
->set('principaluri', $updateQuery->createParameter('updatedPrincipalUri'))
->where($updateQuery->expr()->eq('id', $updateQuery->createParameter('shareId')));
$statement = $qb->execute();
while ($share = $statement->fetch()) {
$gid = substr($share['principaluri'], strlen(self::GROUP_PRINCIPAL_PREFIX));
$decodedGid = urldecode($gid);
$encodedGid = urlencode($gid);
if ($gid === $encodedGid
|| !$this->groupManager->groupExists($gid)
|| ($gid !== $decodedGid && $this->groupManager->groupExists($decodedGid))
) {
$this->hintInvalidShares = $this->hintInvalidShares || $gid !== $encodedGid;
continue;
}
// Repair when
// + the group name needs encoding
// + AND it is not encoded yet
// + AND there are no ambivalent groups
try {
$fixedPrincipal = self::GROUP_PRINCIPAL_PREFIX . $encodedGid;
$logParameters = [
'app' => 'core',
'id' => $share['id'],
'old' => $share['principaluri'],
'new' => $fixedPrincipal,
];
$updateQuery
->setParameter('updatedPrincipalUri', $fixedPrincipal)
->setParameter('shareId', $share['id'])
->execute();
$this->logger->info('Repaired principal for dav share {id} from {old} to {new}', $logParameters);
} catch (Exception $e) {
$logParameters['message'] = $e->getMessage();
$logParameters['exception'] = $e;
$this->logger->info('Could not repair principal for dav share {id} from {old} to {new}: {message}', $logParameters);
}
}
return true;
}
/**
* @inheritDoc
*/
public function run(IOutput $output) {
$versionFromBeforeUpdate = $this->config->getSystemValue('version', '0.0.0');
if (version_compare($versionFromBeforeUpdate, '20.0.7', '<')
&& $this->repairUnencodedGroupShares()
) {
$output->info('Repaired DAV group shares');
if ($this->hintInvalidShares) {
$output->info('Invalid shares might be left in the database, running "occ dav:remove-invalid-shares" can remove them.');
}
}
}
}
|
