owncloud / core

	 * @param string $path path to the file, relative to data/

	 * @return string

	 */

	private function getFileKeyDir($encryptionModuleId, $path) {

		list($owner, $filename) = $this->util->getUidAndFilename($path);

		// in case of system wide mount points the keys are stored directly in the data directory

		if ($this->util->isSystemWideMountPoint($filename, $owner)) {

			$keyPath = $this->root_dir . '/' . $this->keys_base_dir . $filename . '/';

		} else {

			$this->setupUserMounts($owner);

			$keyPath = $this->root_dir . '/' . $owner . $this->keys_base_dir . $filename . '/';

		}

		return Filesystem::normalizePath($keyPath . $encryptionModuleId . '/', false);

	}

	/**

	 * move keys if a file was renamed

	 * @param string $path

	 * @return string

	 */

	protected function getPathToKeys($path) {

		list($owner, $relativePath) = $this->util->getUidAndFilename($path);

		$systemWideMountPoint = $this->util->isSystemWideMountPoint($relativePath, $owner);

		if ($systemWideMountPoint) {

			$systemPath = $this->root_dir . '/' . $this->keys_base_dir . $relativePath . '/';

		} else {

			$this->setupUserMounts($owner);

			$systemPath = $this->root_dir . '/' . $owner . $this->keys_base_dir . $relativePath . '/';

		}

		return  Filesystem::normalizePath($systemPath, false);

	}

	/**

	 * Make preparations to filesystem for saving a key file