<?php

/**
* ownCloud
*
* @author Frank Karlitschek 
* @copyright 2010 Frank Karlitschek karlitschek@kde.org 
* 
* 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 Lesser General Public 
* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
* 
*/


/**
 * Class for usermanagement in a SQL Database
 * eg mysql, sqlite
 */
class OC_USER_MOD_AUTH extends OC_USER {
	
	/**
	 * check if the login button is pressed and logg the user in
	 *
	 */
	public static function loginLisener() {
		return '';
	}
	
	
	/**
	 * try to create a new user
	 *
	 */
	public static function createUser($username, $password) {
		return false;
	}
	
	/**
	 * try to login a user
	 *
	 */
	public static function login($username, $password) {
		if ( isset($_SERVER['PHP_AUTH_USER']) AND ('' !== $_SERVER['PHP_AUTH_USER']) ) {
			$_SESSION['user_id'] = $_SERVER['PHP_AUTH_USER'];
			$_SESSION['username'] = $_SERVER['PHP_AUTH_USER'];
			$_SESSION['username_clean'] = $_SERVER['PHP_AUTH_USER'];

			return true;
		}

		return false;
	}
	
	/**
	 * check if the logout button is pressed and logout the user
	 *
	 */
	public static function logoutLisener() {
		if( isset($_GET['logoutbutton']) AND isset($_SESSION['username']) ) {
			header('WWW-Authenticate: Basic realm="ownCloud"');
			header('HTTP/1.0 401 Unauthorized');
			die('401 Unauthorized');
		}
	}
	
	/**
	 * check if a user is logged in
	 *
	 */
	public static function isLoggedIn() {
		if ( isset($_SESSION['user_id']) AND $_SESSION['user_id'] ) {
			return true;
		} else {
			if ( isset($_SERVER['PHP_AUTH_USER']) AND ('' !== $_SERVER['PHP_AUTH_USER']) ) {
				$_SESSION['user_id'] = $_SERVER['PHP_AUTH_USER'];
				$_SESSION['username'] = $_SERVER['PHP_AUTH_USER'];
				$_SESSION['username_clean'] = $_SERVER['PHP_AUTH_USER'];

				return true;;
			}
		}

		return false;
	}
	
	/**
	 * try to create a new group
	 *
	 */
	public static function createGroup($groupname) {
		// does not work with MOD_AUTH (only or some modules)
		return false;
	}
	
	/**
	 * get the id of a user
	 *
	 */
	public static function getUserId($username, $nocache=false) {
		// does not work with MOD_AUTH (only or some modules)
		return 0;
	}
	
	/**
	 * get the id of a group
	 *
	 */
	public static function getGroupId($groupname, $nocache=false) {
		// does not work with MOD_AUTH (only or some modules)
		return 0;
	}
	
	/**
	 * get the name of a group
	 *
	 */
	public static function getGroupName($groupid, $nocache=false) {
		// does not work with MOD_AUTH (only or some modules)
		return 0;
	}
	
	/**
	 * check if a user belongs to a group
	 *
	 */
	public static function inGroup($username, $groupname) {
		// does not work with MOD_AUTH (only or some modules)
		return false;
	}
	
	/**
	 * add a user to a group
	 *
	 */
	public static function addToGroup($username, $groupname) {
		// does not work with MOD_AUTH (only or some modules)
		return false;
	}
	
	public static function generatePassword() {
		return uniqid();
	}
	
	/**
	 * get all groups the user belongs to
	 *
	 */
	public static function getUserGroups($username) {
		// does not work with MOD_AUTH (only or some modules)
		$groups = array();
		return $groups;
	}
	
	/**
	 * set the password of a user
	 *
	 */
	public static function setPassword($username, $password) {
		return false;
	}
	
	/**
	 * check the password of a user
	 *
	 */
	public static function checkPassword($username, $password) {
		// does not work with MOD_AUTH (only or some modules)
		return false;
	}
}