Merge branch '2.8'

* 2.8: (29 commits)
  Updating AbstractVoter so that the method receives the TokenInterface
  Adding the necessary files so that Guard can be its own installable component
  Fix syntax in a test
  Normalize the way we check versions
  Avoid errors when generating the logout URL when there is no firewall key
  Removing unnecessary override
  fabbot
  Adding a new exception and throwing it when the User changes
  Fixing a bug where having an authentication failure would log you out.
  Tweaks thanks to Wouter
  Adding logging  on this step and switching the order - not for any huge reason
  Adding a base class to assist with form login authentication
  Allowing for other authenticators to be checked
  meaningless author and license changes
  Adding missing factory registration
  Thanks again fabbot!
  A few more changes thanks to @iltar
  Splitting the getting of the user and checking credentials into two steps
  Tweaking docblock on interface thanks to @iltar
  Adding periods at the end of exceptions, and changing one class name to LogicException thanks to @iltar
  ...

Conflicts:
	UPGRADE-2.8.md
	src/Symfony/Bridge/Twig/Tests/Node/DumpNodeTest.php
	src/Symfony/Bundle/FrameworkBundle/Command/ServerCommand.php
	src/Symfony/Component/Validator/Tests/Constraints/AbstractComparisonValidatorTestCase.php
	src/Symfony/Component/Validator/Tests/Constraints/IdenticalToValidatorTest.php
	src/Symfony/Component/Validator/Tests/Constraints/RangeValidatorTest.php

1 files changed, 103 insertions, 0 deletions

diff --git a/Guard/Authenticator/AbstractFormLoginAuthenticator.php b/Guard/Authenticator/AbstractFormLoginAuthenticator.php
new file mode 100644
index 0000000..b3c6bd7
--- /dev/null
+++ b/Guard/Authenticator/AbstractFormLoginAuthenticator.php
@@ -0,0 +1,103 @@
+<?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\Authenticator;
+
+use Symfony\Component\Security\Guard\AbstractGuardAuthenticator;
+use Symfony\Component\HttpFoundation\RedirectResponse;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
+use Symfony\Component\Security\Core\Exception\AuthenticationException;
+use Symfony\Component\Security\Core\Security;
+
+/**
+ * A base class to make form login authentication easier!
+ *
+ * @author Ryan Weaver <ryan@knpuniversity.com>
+ */
+abstract class AbstractFormLoginAuthenticator extends AbstractGuardAuthenticator
+{
+    /**
+     * Return the URL to the login page.
+     *
+     * @return string
+     */
+    abstract protected function getLoginUrl();
+
+    /**
+     * The user will be redirected to the secure page they originally tried
+     * to access. But if no such page exists (i.e. the user went to the
+     * login page directly), this returns the URL the user should be redirected
+     * to after logging in successfully (e.g. your homepage).
+     *
+     * @return string
+     */
+    abstract protected function getDefaultSuccessRedirectUrl();
+
+    /**
+     * Override to change what happens after a bad username/password is submitted.
+     *
+     * @param Request                 $request
+     * @param AuthenticationException $exception
+     *
+     * @return RedirectResponse
+     */
+    public function onAuthenticationFailure(Request $request, AuthenticationException $exception)
+    {
+        $request->getSession()->set(Security::AUTHENTICATION_ERROR, $exception);
+        $url = $this->getLoginUrl();
+
+        return new RedirectResponse($url);
+    }
+
+    /**
+     * Override to change what happens after successful authentication.
+     *
+     * @param Request        $request
+     * @param TokenInterface $token
+     * @param string         $providerKey
+     *
+     * @return RedirectResponse
+     */
+    public function onAuthenticationSuccess(Request $request, TokenInterface $token, $providerKey)
+    {
+        // if the user hit a secure page and start() was called, this was
+        // the URL they were on, and probably where you want to redirect to
+        $targetPath = $request->getSession()->get('_security.'.$providerKey.'.target_path');
+
+        if (!$targetPath) {
+            $targetPath = $this->getDefaultSuccessRedirectUrl();
+        }
+
+        return new RedirectResponse($targetPath);
+    }
+
+    public function supportsRememberMe()
+    {
+        return true;
+    }
+
+    /**
+     * Override to control what happens when the user hits a secure page
+     * but isn't logged in yet.
+     *
+     * @param Request                      $request
+     * @param AuthenticationException|null $authException
+     *
+     * @return RedirectResponse
+     */
+    public function start(Request $request, AuthenticationException $authException = null)
+    {
+        $url = $this->getLoginUrl();
+
+        return new RedirectResponse($url);
+    }
+}