Fixing a bug where having an authentication failure would log you out.

This solution is a copy of what AbstractAuthenticationListener does. Scenario:

1) Login
2) Go back to the log in page
3) Put in a bad user/pass

You *should* still be logged in after a failed attempt. This commit gives that behavior.

src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php

@@ -117,7 +117,7 @@ private function executeGuardAuthenticator($uniqueGuardKey, GuardAuthenticatorIn
                 $this->logger->info('Guard authentication failed.', array('exception' => $e, 'authenticator' => get_class($guardAuthenticator)));
             }
 
-            $response = $this->guardHandler->handleAuthenticationFailure($e, $request, $guardAuthenticator);
+            $response = $this->guardHandler->handleAuthenticationFailure($e, $request, $guardAuthenticator, $this->providerKey);
 
             if ($response instanceof Response) {
                 $event->setResponse($response);

src/Symfony/Component/Security/Guard/GuardAuthenticatorHandler.php

@@ -18,6 +18,7 @@
 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Core\User\UserInterface;
+use Symfony\Component\Security\Guard\Token\PostAuthenticationGuardToken;
 use Symfony\Component\Security\Http\Event\InteractiveLoginEvent;
 use Symfony\Component\Security\Http\SecurityEvents;
 
@@ -112,12 +113,16 @@ public function authenticateUserAndHandleSuccess(UserInterface $user, Request $r
      * @param AuthenticationException     $authenticationException
      * @param Request                     $request
      * @param GuardAuthenticatorInterface $guardAuthenticator
+     * @param string                      $providerKey The key of the firewall
      *
      * @return null|Response
      */
-    public function handleAuthenticationFailure(AuthenticationException $authenticationException, Request $request, GuardAuthenticatorInterface $guardAuthenticator)
+    public function handleAuthenticationFailure(AuthenticationException $authenticationException, Request $request, GuardAuthenticatorInterface $guardAuthenticator, $providerKey)
     {
-        $this->tokenStorage->setToken(null);
+        $token = $this->tokenStorage->getToken();
+        if ($token instanceof PostAuthenticationGuardToken && $providerKey === $token->getProviderKey()) {
+            $this->tokenStorage->setToken(null);
+        }
 
         $response = $guardAuthenticator->onAuthenticationFailure($request, $authenticationException);
         if ($response instanceof Response || null === $response) {

src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php

@@ -141,7 +141,7 @@ public function testHandleCatchesAuthenticationException()
         $this->guardAuthenticatorHandler
             ->expects($this->once())
             ->method('handleAuthenticationFailure')
-            ->with($authException, $this->request, $authenticator);
+            ->with($authException, $this->request, $authenticator, $providerKey);
 
         $listener = new GuardAuthenticationListener(
             $this->guardAuthenticatorHandler,

src/Symfony/Component/Security/Guard/Tests/GuardAuthenticatorHandlerTest.php

@@ -18,9 +18,6 @@
 use Symfony\Component\Security\Http\Event\InteractiveLoginEvent;
 use Symfony\Component\Security\Http\SecurityEvents;
 
-/**
- * @author Ryan Weaver <weaverryan@gmail.com>
- */
 class GuardAuthenticatorHandlerTest extends \PHPUnit_Framework_TestCase
 {
     private $tokenStorage;
@@ -63,7 +60,41 @@ public function testHandleAuthenticationSuccess()
 
     public function testHandleAuthenticationFailure()
     {
+        // setToken() not called - getToken() will return null, so there's nothing to clear
+        $this->tokenStorage->expects($this->never())
+            ->method('setToken')
+            ->with(null);
+        $authException = new AuthenticationException('Bad password!');
+
+        $response = new Response('Try again, but with the right password!');
+        $this->guardAuthenticator->expects($this->once())
+            ->method('onAuthenticationFailure')
+            ->with($this->request, $authException)
+            ->will($this->returnValue($response));
+
+        $handler = new GuardAuthenticatorHandler($this->tokenStorage, $this->dispatcher);
+        $actualResponse = $handler->handleAuthenticationFailure($authException, $this->request, $this->guardAuthenticator, 'firewall_provider_key');
+        $this->assertSame($response, $actualResponse);
+    }
+
+    /**
+     * @dataProvider getTokenClearingTests
+     */
+    public function testHandleAuthenticationClearsToken($tokenClass, $tokenProviderKey, $actualProviderKey, $shouldTokenBeCleared)
+    {
+        $token = $this->getMockBuilder($tokenClass)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $token->expects($this->any())
+            ->method('getProviderKey')
+            ->will($this->returnValue($tokenProviderKey));
+
+        // make the $token be the current token
         $this->tokenStorage->expects($this->once())
+            ->method('getToken')
+            ->will($this->returnValue($token));
+
+        $this->tokenStorage->expects($shouldTokenBeCleared ? $this->once() : $this->never())
             ->method('setToken')
             ->with(null);
         $authException = new AuthenticationException('Bad password!');
@@ -75,10 +106,21 @@ public function testHandleAuthenticationFailure()
             ->will($this->returnValue($response));
 
         $handler = new GuardAuthenticatorHandler($this->tokenStorage, $this->dispatcher);
-        $actualResponse = $handler->handleAuthenticationFailure($authException, $this->request, $this->guardAuthenticator);
+        $actualResponse = $handler->handleAuthenticationFailure($authException, $this->request, $this->guardAuthenticator, $actualProviderKey);
         $this->assertSame($response, $actualResponse);
     }
 
+    public function getTokenClearingTests()
+    {
+        $tests = array();
+        // correct token class and matching firewall => clear the token
+        $tests[] = array('Symfony\Component\Security\Guard\Token\PostAuthenticationGuardToken', 'the_firewall_key', 'the_firewall_key', true);
+        $tests[] = array('Symfony\Component\Security\Guard\Token\PostAuthenticationGuardToken', 'the_firewall_key', 'different_key', false);
+        $tests[] = array('Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken', 'the_firewall_key', 'the_firewall_key', false);
+
+        return $tests;
+    }
+
     protected function setUp()
     {
         $this->tokenStorage = $this->getMock('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface');