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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\Http\Authentication;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\Security\Core\Exception\AuthenticationException;
use Symfony\Component\Security\Core\Security;
/**
* Extracts Security Errors from Request
*
* @author Boris Vujicic <boris.vujicic@gmail.com>
*/
class AuthenticationUtils
{
/**
* @var RequestStack
*/
private $requestStack;
/**
* @param RequestStack $requestStack
*/
public function __construct(RequestStack $requestStack)
{
$this->requestStack = $requestStack;
}
/**
* @param bool $clearSession
*
* @return AuthenticationException|null
*/
public function getLastAuthenticationError($clearSession = true)
{
$request = $this->getRequest();
$session = $request->getSession();
$authenticationException = null;
if ($request->attributes->has(Security::AUTHENTICATION_ERROR)) {
$authenticationException = $request->attributes->get(Security::AUTHENTICATION_ERROR);
} elseif ($session !== null && $session->has(Security::AUTHENTICATION_ERROR)) {
$authenticationException = $session->get(Security::AUTHENTICATION_ERROR);
if ($clearSession) {
$session->remove(Security::AUTHENTICATION_ERROR);
}
}
return $authenticationException;
}
/**
* @return string
*/
public function getLastUsername()
{
$session = $this->getRequest()->getSession();
return null === $session ? '' : $session->get(Security::LAST_USERNAME);
}
/**
* @return Request
* @throws \LogicException
*/
private function getRequest()
{
$request = $this->requestStack->getCurrentRequest();
if (null === $request) {
throw new \LogicException('Request should exist so it can be processed for error.');
}
return $request;
}
}