1 files changed, 110 insertions, 0 deletions
diff --git a/apps/files/lib/Command/Object/ObjectUtil.php b/apps/files/lib/Command/Object/ObjectUtil.php
new file mode 100644
index 00000000000..b7359dfa193
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+++ b/apps/files/lib/Command/Object/ObjectUtil.php
@@ -0,0 +1,110 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2023 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 OCA\Files\Command\Object;
+
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\Files\ObjectStore\IObjectStore;
+use OCP\IConfig;
+use OCP\IDBConnection;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class ObjectUtil {
+	private IConfig $config;
+	private IDBConnection $connection;
+
+	public function __construct(IConfig $config, IDBConnection $connection) {
+		$this->config = $config;
+		$this->connection = $connection;
+	}
+
+	private function getObjectStoreConfig(): ?array {
+		$config = $this->config->getSystemValue('objectstore_multibucket');
+		if (is_array($config)) {
+			$config['multibucket'] = true;
+			return $config;
+		}
+		$config = $this->config->getSystemValue('objectstore');
+		if (is_array($config)) {
+			if (!isset($config['multibucket'])) {
+				$config['multibucket'] = false;
+			}
+			return $config;
+		} else {
+			return null;
+		}
+	}
+
+	public function getObjectStore(?string $bucket, OutputInterface $output): ?IObjectStore {
+		$config = $this->getObjectStoreConfig();
+		if (!$config) {
+			$output->writeln("<error>Instance is not using primary object store</error>");
+			return null;
+		}
+		if ($config['multibucket'] && !$bucket) {
+			$output->writeln("<error>--bucket option required</error> because <info>multi bucket</info> is enabled.");
+			return null;
+		}
+
+		if (!isset($config['arguments'])) {
+			throw new \Exception("no arguments configured for object store configuration");
+		}
+		if (!isset($config['class'])) {
+			throw new \Exception("no class configured for object store configuration");
+		}
+
+		if ($bucket) {
+			// s3, swift
+			$config['arguments']['bucket'] = $bucket;
+			// azure
+			$config['arguments']['container'] = $bucket;
+		}
+
+		$store = new $config['class']($config['arguments']);
+		if (!$store instanceof IObjectStore) {
+			throw new \Exception("configured object store class is not an object store implementation");
+		}
+		return $store;
+	}
+
+	/**
+	 * Check if an object is referenced in the database
+	 */
+	public function objectExistsInDb(string $object): int|false {
+		if (str_starts_with($object, 'urn:oid:')) {
+			$fileId = (int)substr($object, strlen('urn:oid:'));
+			$query = $this->connection->getQueryBuilder();
+			$query->select('fileid')
+				->from('filecache')
+				->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT)));
+			$result = $query->executeQuery();
+			if ($result->fetchOne() !== false) {
+				return $fileId;
+			} else {
+				return false;
+			}
+		} else {
+			return false;
+		}
+	}
+}