1 files changed, 66 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..28972c1b462
--- /dev/null
+++ b/apps/files_sharing/lib/Scanner.php
@@ -0,0 +1,66 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+namespace OCA\Files_Sharing;
+
+use OC\Files\ObjectStore\ObjectStoreScanner;
+use OC\Files\Storage\Storage;
+
+/**
+ * Scanner for SharedStorage
+ */
+class Scanner extends \OC\Files\Cache\Scanner {
+	/**
+	 * @var SharedStorage $storage
+	 */
+	protected $storage;
+
+	private $sourceScanner;
+
+	/**
+	 * Returns metadata from the shared storage, but
+	 * with permissions from the source storage.
+	 *
+	 * @param string $path path of the file for which to retrieve metadata
+	 *
+	 * @return array|null an array of metadata of the file
+	 */
+	public function getData($path) {
+		$data = parent::getData($path);
+		if ($data === null) {
+			return null;
+		}
+		$internalPath = $this->storage->getUnjailedPath($path);
+		$data['permissions'] = $this->storage->getSourceStorage()->getPermissions($internalPath);
+		return $data;
+	}
+
+	private function getSourceScanner() {
+		if ($this->sourceScanner) {
+			return $this->sourceScanner;
+		}
+		if ($this->storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage')) {
+			/** @var Storage $storage */
+			[$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, $data = null) {
+		$sourceScanner = $this->getSourceScanner();
+		if ($sourceScanner instanceof ObjectStoreScanner) {
+			// ObjectStoreScanner doesn't scan
+			return null;
+		} else {
+			return parent::scanFile($file, $reuseExisting, $parentId, $cacheData, $lock);
+		}
+	}
+}