<?php

/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    OpenId
 * @subpackage OpenId_Provider
 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Session.php 20096 2010-01-06 02:05:09Z bkarwin $
 */

if (!defined('OPENID_ROOT'))
    define('OPENID_ROOT', dirname(__FILE__) . '/../..');

/**
 * @see OpenId_Provider_User
 */
require_once OPENID_ROOT . "/Provider/User.php";

/**
 * Class to get/store information about logged in user in Web Browser using
 * PHP session
 *
 * @category   Zend
 * @package    OpenId
 * @subpackage OpenId_Provider
 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class OpenId_Provider_User_Session extends OpenId_Provider_User
{
    /**
     * Creates OpenId_Provider_User_Session object with given session
     * namespace or creates new session namespace named "openid"
     *
     */
    public function __construct($no_session_start = false)
    {
        if (!headers_sent() && !isset($_SESSION) && !$no_session_start)
        {
            @session_start();
        }
        
        $_SESSION['_openid'] = new stdClass;
        $this->_session =& $_SESSION['_openid'];
    }

    /**
     * Stores information about logged in user in session data
     *
     * @param string $id user identity URL
     * @return bool
     */
    public function setLoggedInUser($id)
    {
        $this->_session->logged_in = $id;
        return true;
    }

    /**
     * Returns identity URL of logged in user or false
     *
     * @return mixed
     */
    public function getLoggedInUser()
    {
        if (isset($this->_session->logged_in)) {
            return $this->_session->logged_in;
        }
        return false;
    }

    /**
     * Performs logout. Clears information about logged in user.
     *
     * @return bool
     */
    public function delLoggedInUser()
    {
        unset($this->_session->logged_in);
        return true;
    }

}