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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OC\Repair;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
use OCP\Migration\IOutput;
use OCP\Migration\IRepairStep;
class RemoveBrokenProperties implements IRepairStep {
/**
* RemoveBrokenProperties constructor.
*
* @param IDBConnection $db
*/
public function __construct(
private IDBConnection $db,
) {
}
/**
* @inheritdoc
*/
public function getName() {
return 'Remove broken DAV object properties';
}
/**
* @inheritdoc
*/
public function run(IOutput $output) {
// retrieve all object properties
$qb = $this->db->getQueryBuilder();
$qb->select('id', 'propertyvalue')
->from('properties')
->where($qb->expr()->eq('valuetype', $qb->createNamedParameter('3', IQueryBuilder::PARAM_INT), IQueryBuilder::PARAM_INT));
$result = $qb->executeQuery();
// find broken object properties
$brokenIds = [];
while ($entry = $result->fetch()) {
if (!empty($entry['propertyvalue'])) {
$object = @unserialize(str_replace('\x00', chr(0), $entry['propertyvalue']));
if ($object === false) {
$brokenIds[] = $entry['id'];
}
} else {
$brokenIds[] = $entry['id'];
}
}
$result->closeCursor();
// delete broken object properties
$qb = $this->db->getQueryBuilder();
$qb->delete('properties')
->where($qb->expr()->in('id', $qb->createParameter('ids'), IQueryBuilder::PARAM_STR_ARRAY));
foreach (array_chunk($brokenIds, 1000) as $chunkIds) {
$qb->setParameter('ids', $chunkIds, IQueryBuilder::PARAM_STR_ARRAY);
$qb->executeStatement();
}
$total = count($brokenIds);
$output->info("$total broken object properties removed");
}
}
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