1 files changed, 75 insertions, 0 deletions
diff --git a/apps/files_sharing/lib/Scanner.php b/apps/files_sharing/lib/Scanner.php
new file mode 100644
index 00000000000..215c0a7b6ae
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+++ b/apps/files_sharing/lib/Scanner.php
@@ -0,0 +1,75 @@
+<?php
+/**
+ * @author Morris Jobke <hey@morrisjobke.de>
+ * @author Robin Appelman <icewind@owncloud.com>
+ * @author Vincent Petry <pvince81@owncloud.com>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_Sharing;
+
+use OC\Files\ObjectStore\NoopScanner;
+
+/**
+ * Scanner for SharedStorage
+ */
+class Scanner extends \OC\Files\Cache\Scanner {
+	private $sourceScanner;
+
+	/**
+	 * Returns metadata from the shared storage, but
+	 * with permissions from the source storage.
+	 *
+	 * @param string $path path of the file for which to retrieve metadata
+	 *
+	 * @return array an array of metadata of the file
+	 */
+	public function getData($path) {
+		$data = parent::getData($path);
+		if ($data === null) {
+			return null;
+		}
+		list($sourceStorage, $internalPath) = $this->storage->resolvePath($path);
+		$data['permissions'] = $sourceStorage->getPermissions($internalPath);
+		return $data;
+	}
+
+	private function getSourceScanner() {
+		if ($this->sourceScanner) {
+			return $this->sourceScanner;
+		}
+		if ($this->storage->instanceOfStorage('\OC\Files\Storage\Shared')) {
+			/** @var \OC\Files\Storage\Storage $storage */
+			list($storage) = $this->storage->resolvePath('');
+			$this->sourceScanner = $storage->getScanner();
+			return $this->sourceScanner;
+		} else {
+			return null;
+		}
+	}
+
+	public function scanFile($file, $reuseExisting = 0, $parentId = -1, $cacheData = null, $lock = true) {
+		$sourceScanner = $this->getSourceScanner();
+		if ($sourceScanner instanceof NoopScanner) {
+			return [];
+		} else {
+			return parent::scanFile($file, $reuseExisting, $parentId, $cacheData, $lock);
+		}
+	}
+}
+