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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Session\Validator;
class HttpUserAgent implements ValidatorInterface
{
/**
* Internal data
*
* @var string
*/
protected $data;
/**
* Constructor
* get the current user agent and store it in the session as 'valid data'
*
* @param string|null $data
*/
public function __construct($data = null)
{
if (empty($data)) {
$data = isset($_SERVER['HTTP_USER_AGENT'])
? $_SERVER['HTTP_USER_AGENT']
: null;
}
$this->data = $data;
}
/**
* isValid() - this method will determine if the current user agent matches the
* user agent we stored when we initialized this variable.
*
* @return bool
*/
public function isValid()
{
$userAgent = isset($_SERVER['HTTP_USER_AGENT'])
? $_SERVER['HTTP_USER_AGENT']
: null;
return ($userAgent === $this->getData());
}
/**
* Retrieve token for validating call
*
* @return string
*/
public function getData()
{
return $this->data;
}
/**
* Return validator name
*
* @return string
*/
public function getName()
{
return __CLASS__;
}
}
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