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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\Guard\Firewall;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\Security\Guard\GuardAuthenticatorHandler;
use Symfony\Component\Security\Guard\Token\PreAuthenticationGuardToken;
use Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface;
use Symfony\Component\Security\Guard\GuardAuthenticatorInterface;
use Psr\Log\LoggerInterface;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Exception\AuthenticationException;
use Symfony\Component\Security\Http\Firewall\ListenerInterface;
use Symfony\Component\Security\Http\RememberMe\RememberMeServicesInterface;
/**
* Authentication listener for the "guard" system.
*
* @author Ryan Weaver <ryan@knpuniversity.com>
*/
class GuardAuthenticationListener implements ListenerInterface
{
private $guardHandler;
private $authenticationManager;
private $providerKey;
private $guardAuthenticators;
private $logger;
private $rememberMeServices;
/**
* @param GuardAuthenticatorHandler $guardHandler The Guard handler
* @param AuthenticationManagerInterface $authenticationManager An AuthenticationManagerInterface instance
* @param string $providerKey The provider (i.e. firewall) key
* @param GuardAuthenticatorInterface[] $guardAuthenticators The authenticators, with keys that match what's passed to GuardAuthenticationProvider
* @param LoggerInterface $logger A LoggerInterface instance
*/
public function __construct(GuardAuthenticatorHandler $guardHandler, AuthenticationManagerInterface $authenticationManager, $providerKey, array $guardAuthenticators, LoggerInterface $logger = null)
{
if (empty($providerKey)) {
throw new \InvalidArgumentException('$providerKey must not be empty.');
}
$this->guardHandler = $guardHandler;
$this->authenticationManager = $authenticationManager;
$this->providerKey = $providerKey;
$this->guardAuthenticators = $guardAuthenticators;
$this->logger = $logger;
}
/**
* Iterates over each authenticator to see if each wants to authenticate the request.
*
* @param GetResponseEvent $event
*/
public function handle(GetResponseEvent $event)
{
if (null !== $this->logger) {
$this->logger->debug('Checking for guard authentication credentials.', array('firewall_key' => $this->providerKey, 'authenticators' => count($this->guardAuthenticators)));
}
foreach ($this->guardAuthenticators as $key => $guardAuthenticator) {
// get a key that's unique to *this* guard authenticator
// this MUST be the same as GuardAuthenticationProvider
$uniqueGuardKey = $this->providerKey.'_'.$key;
$this->executeGuardAuthenticator($uniqueGuardKey, $guardAuthenticator, $event);
if ($event->hasResponse()) {
if (null !== $this->logger) {
$this->logger->debug('The "{authenticator}" authenticator set the response. Any later authenticator will not be called', array('authenticator' => get_class($guardAuthenticator)));
}
break;
}
}
}
private function executeGuardAuthenticator($uniqueGuardKey, GuardAuthenticatorInterface $guardAuthenticator, GetResponseEvent $event)
{
$request = $event->getRequest();
try {
if (null !== $this->logger) {
$this->logger->debug('Calling getCredentials() on guard configurator.', array('firewall_key' => $this->providerKey, 'authenticator' => get_class($guardAuthenticator)));
}
// allow the authenticator to fetch authentication info from the request
$credentials = $guardAuthenticator->getCredentials($request);
// allow null to be returned to skip authentication
if (null === $credentials) {
return;
}
// create a token with the unique key, so that the provider knows which authenticator to use
$token = new PreAuthenticationGuardToken($credentials, $uniqueGuardKey);
if (null !== $this->logger) {
$this->logger->debug('Passing guard token information to the GuardAuthenticationProvider', array('firewall_key' => $this->providerKey, 'authenticator' => get_class($guardAuthenticator)));
}
// pass the token into the AuthenticationManager system
// this indirectly calls GuardAuthenticationProvider::authenticate()
$token = $this->authenticationManager->authenticate($token);
if (null !== $this->logger) {
$this->logger->info('Guard authentication successful!', array('token' => $token, 'authenticator' => get_class($guardAuthenticator)));
}
// sets the token on the token storage, etc
$this->guardHandler->authenticateWithToken($token, $request);
} catch (AuthenticationException $e) {
// oh no! Authentication failed!
if (null !== $this->logger) {
$this->logger->info('Guard authentication failed.', array('exception' => $e, 'authenticator' => get_class($guardAuthenticator)));
}
$response = $this->guardHandler->handleAuthenticationFailure($e, $request, $guardAuthenticator, $this->providerKey);
if ($response instanceof Response) {
$event->setResponse($response);
}
return;
}
// success!
$response = $this->guardHandler->handleAuthenticationSuccess($token, $request, $guardAuthenticator, $this->providerKey);
if ($response instanceof Response) {
if (null !== $this->logger) {
$this->logger->debug('Guard authenticator set success response.', array('response' => $response, 'authenticator' => get_class($guardAuthenticator)));
}
$event->setResponse($response);
} else {
if (null !== $this->logger) {
$this->logger->debug('Guard authenticator set no success response: request continues.', array('authenticator' => get_class($guardAuthenticator)));
}
}
// attempt to trigger the remember me functionality
$this->triggerRememberMe($guardAuthenticator, $request, $token, $response);
}
/**
* Should be called if this listener will support remember me.
*
* @param RememberMeServicesInterface $rememberMeServices
*/
public function setRememberMeServices(RememberMeServicesInterface $rememberMeServices)
{
$this->rememberMeServices = $rememberMeServices;
}
/**
* Checks to see if remember me is supported in the authenticator and
* on the firewall. If it is, the RememberMeServicesInterface is notified.
*
* @param GuardAuthenticatorInterface $guardAuthenticator
* @param Request $request
* @param TokenInterface $token
* @param Response $response
*/
private function triggerRememberMe(GuardAuthenticatorInterface $guardAuthenticator, Request $request, TokenInterface $token, Response $response = null)
{
if (null === $this->rememberMeServices) {
if (null !== $this->logger) {
$this->logger->debug('Remember me skipped: it is not configured for the firewall.', array('authenticator' => get_class($guardAuthenticator)));
}
return;
}
if (!$guardAuthenticator->supportsRememberMe()) {
if (null !== $this->logger) {
$this->logger->debug('Remember me skipped: your authenticator does not support it.', array('authenticator' => get_class($guardAuthenticator)));
}
return;
}
if (!$response instanceof Response) {
throw new \LogicException(sprintf(
'%s::onAuthenticationSuccess *must* return a Response if you want to use the remember me functionality. Return a Response, or set remember_me to false under the guard configuration.',
get_class($guardAuthenticator)
));
}
$this->rememberMeServices->loginSuccess($request, $response, $token);
}
}
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