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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\Core;
use Symfony\Component\Security\Core\Exception\AuthenticationCredentialsNotFoundException;
use Symfony\Component\Security\Core\Authorization\AccessDecisionManagerInterface;
use Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
/**
* SecurityContext is the main entry point of the Security component.
*
* It gives access to the token representing the current user authentication.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class SecurityContext implements SecurityContextInterface
{
private $token;
private $accessDecisionManager;
private $authenticationManager;
private $alwaysAuthenticate;
/**
* Constructor.
*
* @param AuthenticationManagerInterface $authenticationManager An AuthenticationManager instance
* @param AccessDecisionManagerInterface|null $accessDecisionManager An AccessDecisionManager instance
* @param Boolean $alwaysAuthenticate
*/
public function __construct(AuthenticationManagerInterface $authenticationManager, AccessDecisionManagerInterface $accessDecisionManager, $alwaysAuthenticate = false)
{
$this->authenticationManager = $authenticationManager;
$this->accessDecisionManager = $accessDecisionManager;
$this->alwaysAuthenticate = $alwaysAuthenticate;
}
/**
* {@inheritdoc}
*
* @throws AuthenticationCredentialsNotFoundException when the security context has no authentication token.
*/
final public function isGranted($attributes, $object = null)
{
if (null === $this->token) {
throw new AuthenticationCredentialsNotFoundException('The security context contains no authentication token. One possible reason may be that there is no firewall configured for this URL.');
}
if ($this->alwaysAuthenticate || !$this->token->isAuthenticated()) {
$this->token = $this->authenticationManager->authenticate($this->token);
}
if (!is_array($attributes)) {
$attributes = array($attributes);
}
return $this->accessDecisionManager->decide($this->token, $attributes, $object);
}
/**
* {@inheritdoc}
*/
public function getToken()
{
return $this->token;
}
/**
* {@inheritdoc}
*/
public function setToken(TokenInterface $token = null)
{
$this->token = $token;
}
}
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