merged branch vierbergenlars/patch-1 (PR #8854)

This PR was merged into the master branch.

Discussion
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[Security] Keep other query string parameters when switching users

| Q                    | A
| ---------------------- | ---
| Bug fix? 	        | yes
| New feature? 	| no
| BC breaks? 	| no
| Deprecations? 	| no
| Tests pass? 	| yes
| Fixed tickets 	| n/a
| Doc PR 	        | n/a

When switching users, the whole query string gets dropped when redirecting after the switch.
I think only the switch user parameter should be dropped from the query string.

Commits
-------

0a338f5 [Security] Keep other query string parameters when switching users

src/Symfony/Component/Security/Http/Firewall/SwitchUserListener.php

@@ -92,7 +92,9 @@ class SwitchUserListener implements ListenerInterface
             }
         }
 
-        $request->server->set('QUERY_STRING', '');
+        $request->query->remove($this->usernameParameter);
+        $request->server->set('QUERY_STRING', http_build_query($request->query->all()));
+
         $response = new RedirectResponse($request->getUri(), 302);
 
         $event->setResponse($response);

src/Symfony/Component/Security/Tests/Http/Firewall/SwitchUserListenerTest.php

@@ -34,6 +34,7 @@ class SwitchUserListenerTest extends \PHPUnit_Framework_TestCase
         $this->userChecker = $this->getMock('Symfony\Component\Security\Core\User\UserCheckerInterface');
         $this->accessDecisionManager = $this->getMock('Symfony\Component\Security\Core\Authorization\AccessDecisionManagerInterface');
         $this->request = $this->getMock('Symfony\Component\HttpFoundation\Request');
+        $this->request->query = $this->getMock('Symfony\Component\HttpFoundation\ParameterBag');
         $this->request->server = $this->getMock('Symfony\Component\HttpFoundation\ServerBag');
         $this->event = $this->getEvent($this->request);
     }
@@ -86,6 +87,8 @@ class SwitchUserListenerTest extends \PHPUnit_Framework_TestCase
 
         $this->request->expects($this->any())->method('get')->with('_switch_user')->will($this->returnValue('_exit'));
         $this->request->expects($this->any())->method('getUri')->will($this->returnValue('/'));
+        $this->request->query->expects($this->once())->method('remove','_switch_user');
+        $this->request->query->expects($this->any())->method('all')->will($this->returnValue(array()));
         $this->request->server->expects($this->once())->method('set')->with('QUERY_STRING', '');
 
         $this->securityContext->expects($this->once())
@@ -123,6 +126,9 @@ class SwitchUserListenerTest extends \PHPUnit_Framework_TestCase
 
         $this->securityContext->expects($this->any())->method('getToken')->will($this->returnValue($token));
         $this->request->expects($this->any())->method('get')->with('_switch_user')->will($this->returnValue('kuba'));
+        $this->request->query->expects($this->once())->method('remove','_switch_user');
+        $this->request->query->expects($this->any())->method('all')->will($this->returnValue(array()));
+
         $this->request->expects($this->any())->method('getUri')->will($this->returnValue('/'));
         $this->request->server->expects($this->once())->method('set')->with('QUERY_STRING', '');
 
@@ -142,6 +148,35 @@ class SwitchUserListenerTest extends \PHPUnit_Framework_TestCase
         $listener->handle($this->event);
     }
 
+    public function testSwitchUserKeepsOtherQueryStringParameters()
+    {
+        $token = $this->getToken(array($this->getMock('Symfony\Component\Security\Core\Role\RoleInterface')));
+        $user = $this->getMock('Symfony\Component\Security\Core\User\UserInterface');
+        $user->expects($this->any())->method('getRoles')->will($this->returnValue(array()));
+
+        $this->securityContext->expects($this->any())->method('getToken')->will($this->returnValue($token));
+        $this->request->expects($this->any())->method('get')->with('_switch_user')->will($this->returnValue('kuba'));
+        $this->request->query->expects($this->once())->method('remove','_switch_user');
+        $this->request->query->expects($this->any())->method('all')->will($this->returnValue(array('page'=>3,'section'=>2)));
+        $this->request->expects($this->any())->method('getUri')->will($this->returnValue('/'));
+        $this->request->server->expects($this->once())->method('set')->with('QUERY_STRING', 'page=3&section=2');
+
+        $this->accessDecisionManager->expects($this->once())
+            ->method('decide')->with($token, array('ROLE_ALLOWED_TO_SWITCH'))
+            ->will($this->returnValue(true));
+
+        $this->userProvider->expects($this->once())
+            ->method('loadUserByUsername')->with('kuba')
+            ->will($this->returnValue($user));
+        $this->userChecker->expects($this->once())
+            ->method('checkPostAuth')->with($user);
+        $this->securityContext->expects($this->once())
+            ->method('setToken')->with($this->isInstanceOf('Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken'));
+
+        $listener = new SwitchUserListener($this->securityContext, $this->userProvider, $this->userChecker, 'provider123', $this->accessDecisionManager);
+        $listener->handle($this->event);
+    }
+
     private function getEvent($request)
     {
         $event = $this->getMockBuilder('Symfony\Component\HttpKernel\Event\GetResponseEvent')