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<?php
/**
* @copyright Copyright (c) 2017 Robin Appelman <robin@icewind.nl>
*
* @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\NC13;
use OCP\IConfig;
use OCP\IDBConnection;
use OCP\Migration\IOutput;
use OCP\Migration\IRepairStep;
class RepairInvalidPaths implements IRepairStep {
/** @var IDBConnection */
private $connection;
/** @var IConfig */
private $config;
public function __construct(IDBConnection $connection, IConfig $config) {
$this->connection = $connection;
$this->config = $config;
}
public function getName() {
return 'Repair invalid paths in file cache';
}
private function getInvalidEntries() {
$builder = $this->connection->getQueryBuilder();
$computedPath = $builder->func()->concat(
'p.path',
$builder->func()->concat($builder->createNamedParameter('/'), 'f.name')
);
//select f.path, f.parent,p.path from oc_filecache f inner join oc_filecache p on f.parent=p.fileid and p.path!='' where f.path != p.path || '/' || f.name;
$query = $builder->select('f.fileid', 'f.path', 'p.path AS parent_path', 'f.name', 'f.parent', 'f.storage')
->from('filecache', 'f')
->innerJoin('f', 'filecache', 'p', $builder->expr()->andX(
$builder->expr()->eq('f.parent', 'p.fileid'),
$builder->expr()->neq('p.name', $builder->createNamedParameter(''))
))
->where($builder->expr()->neq('f.path', $computedPath));
return $query->execute()->fetchAll();
}
private function getId($storage, $path) {
$builder = $this->connection->getQueryBuilder();
$query = $builder->select('fileid')
->from('filecache')
->where($builder->expr()->eq('storage', $builder->createNamedParameter($storage)))
->andWhere($builder->expr()->eq('path', $builder->createNamedParameter($path)));
return $query->execute()->fetchColumn();
}
private function update($fileid, $newPath) {
$builder = $this->connection->getQueryBuilder();
$query = $builder->update('filecache')
->set('path', $builder->createNamedParameter($newPath))
->set('path_hash', $builder->createNamedParameter(md5($newPath)))
->where($builder->expr()->eq('fileid', $builder->createNamedParameter($fileid)));
$query->execute();
}
private function reparent($from, $to) {
$builder = $this->connection->getQueryBuilder();
$query = $builder->update('filecache')
->set('parent', $builder->createNamedParameter($to))
->where($builder->expr()->eq('fileid', $builder->createNamedParameter($from)));
$query->execute();
}
private function delete($fileid) {
$builder = $this->connection->getQueryBuilder();
$query = $builder->delete('filecache')
->where($builder->expr()->eq('fileid', $builder->createNamedParameter($fileid)));
$query->execute();
}
private function repair() {
$entries = $this->getInvalidEntries();
foreach ($entries as $entry) {
$calculatedPath = $entry['parent_path'] . '/' . $entry['name'];
if ($newId = $this->getId($entry['storage'], $calculatedPath)) {
// a new entry with the correct path has already been created, reuse that one and delete the incorrect entry
$this->reparent($entry['fileid'], $newId);
$this->delete($entry['fileid']);
} else {
$this->update($entry['fileid'], $calculatedPath);
}
}
return count($entries);
}
public function run(IOutput $output) {
$versionFromBeforeUpdate = $this->config->getSystemValue('version', '0.0.0');
// was added to 12.0.0.30 and 13.0.0.1
if (version_compare($versionFromBeforeUpdate, '12.0.0.30', '<') || version_compare($versionFromBeforeUpdate, '13.0.0.0', '==')) {
$count = $this->repair();
$output->info('Repaired ' . $count . ' paths');
}
}
}
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