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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\HttpKernel\HttpKernelInterface;
use Psr\Log\LoggerInterface;
use Symfony\Component\Security\Core\Exception\AuthenticationException;
use Symfony\Component\Security\Core\SecurityContextInterface;
use Symfony\Component\Security\Http\HttpUtils;

/**
* Class with the default authentication failure handling logic.
*
* Can be optionally be extended from by the developer to alter the behaviour
* while keeping the default behaviour.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
* @author Alexander <iam.asm89@gmail.com>
*/
class DefaultAuthenticationFailureHandler implements AuthenticationFailureHandlerInterface
{
    protected $httpKernel;
    protected $httpUtils;
    protected $logger;
    protected $options;

    /**
* Constructor.
*
* @param HttpKernelInterface $httpKernel
* @param HttpUtils $httpUtils
* @param array $options Options for processing a failed authentication attempt.
* @param LoggerInterface $logger Optional logger
*/
    public function __construct(HttpKernelInterface $httpKernel, HttpUtils $httpUtils, array $options, LoggerInterface $logger = null)
    {
        $this->httpKernel = $httpKernel;
        $this->httpUtils = $httpUtils;
        $this->logger = $logger;

        $this->options = array_merge(array(
            'failure_path' => null,
            'failure_forward' => false,
            'login_path' => '/login',
            'failure_path_parameter' => '_failure_path'
        ), $options);
    }

    /**
* {@inheritdoc}
*/
    public function onAuthenticationFailure(Request $request, AuthenticationException $exception)
    {
        if ($failureUrl = $request->get($this->options['failure_path_parameter'], null, true)) {
             $this->options['failure_path'] = $failureUrl;
        }

        if (null === $this->options['failure_path']) {
            $this->options['failure_path'] = $this->options['login_path'];
        }

        if ($this->options['failure_forward']) {
            if (null !== $this->logger) {
                $this->logger->debug(sprintf('Forwarding to %s', $this->options['failure_path']));
            }

            $subRequest = $this->httpUtils->createRequest($request, $this->options['failure_path']);
            $subRequest->attributes->set(SecurityContextInterface::AUTHENTICATION_ERROR, $exception);

            return $this->httpKernel->handle($subRequest, HttpKernelInterface::SUB_REQUEST);
        }

        if (null !== $this->logger) {
            $this->logger->debug(sprintf('Redirecting to %s', $this->options['failure_path']));
        }

        $request->getSession()->set(SecurityContextInterface::AUTHENTICATION_ERROR, $exception);

        return $this->httpUtils->createRedirectResponse($request, $this->options['failure_path']);
    }
}
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