1 files changed, 170 insertions, 0 deletions
diff --git a/lib/private/Repair/NC13/RepairInvalidPaths.php b/lib/private/Repair/NC13/RepairInvalidPaths.php
new file mode 100644
index 00000000000..cf0b9e7783e
--- /dev/null
+++ b/lib/private/Repair/NC13/RepairInvalidPaths.php
@@ -0,0 +1,170 @@
+<?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\DB\QueryBuilder\IQueryBuilder;
+use OCP\IConfig;
+use OCP\IDBConnection;
+use OCP\Migration\IOutput;
+use OCP\Migration\IRepairStep;
+
+class RepairInvalidPaths implements IRepairStep {
+	const MAX_ROWS = 1000;
+
+	/** @var IDBConnection */
+	private $connection;
+	/** @var IConfig */
+	private $config;
+
+	private $getIdQuery;
+	private $updateQuery;
+	private $reparentQuery;
+	private $deleteQuery;
+
+	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))
+			->setMaxResults(self::MAX_ROWS);
+
+		do {
+			$result = $query->execute();
+			$rows = $result->fetchAll();
+			foreach ($rows as $row) {
+				yield $row;
+			}
+			$result->closeCursor();
+		} while (count($rows) >= self::MAX_ROWS);
+	}
+
+	private function getId($storage, $path) {
+		if (!$this->getIdQuery) {
+			$builder = $this->connection->getQueryBuilder();
+
+			$this->getIdQuery = $builder->select('fileid')
+				->from('filecache')
+				->where($builder->expr()->eq('storage', $builder->createParameter('storage')))
+				->andWhere($builder->expr()->eq('path', $builder->createParameter('path')));
+		}
+
+		$this->getIdQuery->setParameter('storage', $storage, IQueryBuilder::PARAM_INT);
+		$this->getIdQuery->setParameter('path', $path);
+
+		return $this->getIdQuery->execute()->fetchColumn();
+	}
+
+	private function update($fileid, $newPath) {
+		if (!$this->updateQuery) {
+			$builder = $this->connection->getQueryBuilder();
+
+			$this->updateQuery = $builder->update('filecache')
+				->set('path', $builder->createParameter('newpath'))
+				->set('path_hash', $builder->func()->md5($builder->createParameter('newpath')))
+				->where($builder->expr()->eq('fileid', $builder->createParameter('fileid')));
+		}
+
+		$this->updateQuery->setParameter('newpath', $newPath);
+		$this->updateQuery->setParameter('fileid', $fileid, IQueryBuilder::PARAM_INT);
+
+		$this->updateQuery->execute();
+	}
+
+	private function reparent($from, $to) {
+		if (!$this->reparentQuery) {
+			$builder = $this->connection->getQueryBuilder();
+
+			$this->reparentQuery = $builder->update('filecache')
+				->set('parent', $builder->createParameter('to'))
+				->where($builder->expr()->eq('fileid', $builder->createParameter('from')));
+		}
+
+		$this->reparentQuery->setParameter('from', $from);
+		$this->reparentQuery->setParameter('to', $to);
+
+		$this->reparentQuery->execute();
+	}
+
+	private function delete($fileid) {
+		if (!$this->deleteQuery) {
+			$builder = $this->connection->getQueryBuilder();
+
+			$this->deleteQuery = $builder->delete('filecache')
+				->where($builder->expr()->eq('fileid', $builder->createParameter('fileid')));
+		}
+
+		$this->deleteQuery->setParameter('fileid', $fileid, IQueryBuilder::PARAM_INT);
+
+		$this->deleteQuery->execute();
+	}
+
+	private function repair() {
+		$this->connection->beginTransaction();
+		$entries = $this->getInvalidEntries();
+		$count = 0;
+		foreach ($entries as $entry) {
+			$count++;
+			$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);
+			}
+		}
+		$this->connection->commit();
+		return $count;
+	}
+
+	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');
+		}
+	}
+}