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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\EntryPoint;
use Symfony\Component\Security\Core\Exception\AuthenticationException;
use Symfony\Component\Security\Http\EntryPoint\AuthenticationEntryPointInterface;
use Symfony\Component\Security\Core\Exception\NonceExpiredException;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Log\LoggerInterface;
/**
* DigestAuthenticationEntryPoint starts an HTTP Digest authentication.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class DigestAuthenticationEntryPoint implements AuthenticationEntryPointInterface
{
private $key;
private $realmName;
private $nonceValiditySeconds;
private $logger;
public function __construct($realmName, $key, $nonceValiditySeconds = 300, LoggerInterface $logger = null)
{
$this->realmName = $realmName;
$this->key = $key;
$this->nonceValiditySeconds = $nonceValiditySeconds;
$this->logger = $logger;
}
public function start(Request $request, AuthenticationException $authException = null)
{
$expiryTime = microtime(true) + $this->nonceValiditySeconds * 1000;
$signatureValue = md5($expiryTime.':'.$this->key);
$nonceValue = $expiryTime.':'.$signatureValue;
$nonceValueBase64 = base64_encode($nonceValue);
$authenticateHeader = sprintf('Digest realm="%s", qop="auth", nonce="%s"', $this->realmName, $nonceValueBase64);
if ($authException instanceof NonceExpiredException) {
$authenticateHeader = $authenticateHeader.', stale="true"';
}
if (null !== $this->logger) {
$this->logger->debug(sprintf('WWW-Authenticate header sent to user agent: "%s"', $authenticateHeader));
}
$response = new Response();
$response->headers->set('WWW-Authenticate', $authenticateHeader);
$response->setStatusCode(401, $authException->getMessage());
return $response;
}
}
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