server/lib/public/authentication/iapachebackend.php

<?php
/**
 * ownCloud - Apache backend
 *
 * @author Karl Beecher
 * @copyright 2013 Karl Beecher - karl@endocode.com
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or any later version.
 *
 * This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/**
 * Public interface of ownCloud for apps to use.
 * Authentication/IApacheBackend interface
 */

// use OCP namespace for all classes that are considered public.
// This means that they should be used by apps instead of the internal ownCloud classes
namespace OCP\Authentication;

interface IApacheBackend {

	/**
	 * In case the user has been authenticated by Apache true is returned.
	 *
	 * @return boolean whether Apache reports a user as currently logged in.
	 */
	public function isSessionActive();

	/**
	 * Creates an attribute which is added to the logout hyperlink. It can
	 * supply any attribute(s) which are valid for <a>.
	 *
	 * @return string with one or more HTML attributes.
	 */
	public function getLogoutAttribute();

	/**
	 * Return the id of the current user
	 * @return string
	 */
	public function getCurrentUserId();

}