<?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    Zend_Session

 * @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: HttpUserAgent.php 20096 2010-01-06 02:05:09Z bkarwin $

 * @since      Preview Release 0.2

 */

/**

 * @see Zend_Session_Validator_Abstract

 */

require_once 'Zend/Session/Validator/Abstract.php';

/**

 * Zend_Session_Validator_HttpUserAgent

 *

 * @category   Zend

 * @package    Zend_Session

 * @subpackage Validator

 * @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 Zend_Session_Validator_HttpUserAgent extends Zend_Session_Validator_Abstract

{

    /**

     * Setup() - this method will get the current user agent and store it in the session

     * as 'valid data'

     *

     * @return void

     */

    public function setup()

    {

        $this->setValidData( (isset($_SERVER['HTTP_USER_AGENT'])

            ? $_SERVER['HTTP_USER_AGENT'] : null) );

    }

    /**

     * Validate() - this method will determine if the current user agent matches the

     * user agent we stored when we initialized this variable.

     *

     * @return bool

     */

    public function validate()

    {

        $currentBrowser = (isset($_SERVER['HTTP_USER_AGENT'])

            ? $_SERVER['HTTP_USER_AGENT'] : null);

        return $currentBrowser === $this->getValidData();

    }

}