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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Security\Csrf\TokenStorage;
use Symfony\Component\HttpFoundation\Session\SessionInterface;
use Symfony\Component\Security\Csrf\Exception\TokenNotFoundException;
/**
* Token storage that uses a Symfony Session object.
*
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class SessionTokenStorage implements TokenStorageInterface
{
/**
* The namespace used to store values in the session.
*
* @var string
*/
const SESSION_NAMESPACE = '_csrf';
/**
* The user session from which the session ID is returned.
*
* @var SessionInterface
*/
private $session;
/**
* @var string
*/
private $namespace;
/**
* Initializes the storage with a Session object and a session namespace.
*
* @param SessionInterface $session The user session
* @param string $namespace The namespace under which the token
* is stored in the session
*/
public function __construct(SessionInterface $session, $namespace = self::SESSION_NAMESPACE)
{
$this->session = $session;
$this->namespace = $namespace;
}
/**
* {@inheritdoc}
*/
public function getToken($tokenId)
{
if (!$this->session->isStarted()) {
$this->session->start();
}
if (!$this->session->has($this->namespace.'/'.$tokenId)) {
throw new TokenNotFoundException('The CSRF token with ID '.$tokenId.' does not exist.');
}
return (string) $this->session->get($this->namespace.'/'.$tokenId);
}
/**
* {@inheritdoc}
*/
public function setToken($tokenId, $token)
{
if (!$this->session->isStarted()) {
$this->session->start();
}
$this->session->set($this->namespace.'/'.$tokenId, (string) $token);
}
/**
* {@inheritdoc}
*/
public function hasToken($tokenId)
{
if (!$this->session->isStarted()) {
$this->session->start();
}
return $this->session->has($this->namespace.'/'.$tokenId);
}
/**
* {@inheritdoc}
*/
public function removeToken($tokenId)
{
if (!$this->session->isStarted()) {
$this->session->start();
}
return $this->session->remove($this->namespace.'/'.$tokenId);
}
}
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