server/lib/private/legacy/ocs.php

<?php
/**
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 *
 * @author Bart Visscher <bartv@thisnet.nl>
 * @author Frank Karlitschek <frank@karlitschek.de>
 * @author Lukas Reschke <lukas@statuscode.ch>
 * @author Morris Jobke <hey@morrisjobke.de>
 * @author Robin Appelman <icewind@owncloud.com>
 * @author Thomas Müller <thomas.mueller@tmit.eu>
 *
 * @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/>
 *
 */
use OCP\API;

/**
 * Class to handle open collaboration services API requests
 */
class OC_OCS {
	/**
	 * Called when a not existing OCS endpoint has been called
	 */
	public static function notFound() {
		$format = \OC::$server->getRequest()->getParam('format', 'xml');
		$txt='Invalid query, please check the syntax. API specifications are here:'
			.' http://www.freedesktop.org/wiki/Specifications/open-collaboration-services. DEBUG OUTPUT:'."\n";
		OC_API::respond(new OC_OCS_Result(null, API::RESPOND_UNKNOWN_ERROR, $txt), $format);
	}

}