From d91691573f108422cc2080462af35ebd62dc93fb Mon Sep 17 00:00:00 2001
From: Jeremy <jeremy.benoist@gmail.com>
Date: Sun, 8 Feb 2015 21:47:36 +0100
Subject: Add custom auth encoder & provider

These custom classes allow Wallabag v2 to be compatible with Wallabag v1 salted password
---
 .../Provider/WallabagAuthenticationProvider.php    | 89 ++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 src/Wallabag/CoreBundle/Security/Authentication/Provider/WallabagAuthenticationProvider.php

(limited to 'src/Wallabag/CoreBundle/Security/Authentication/Provider/WallabagAuthenticationProvider.php')

diff --git a/src/Wallabag/CoreBundle/Security/Authentication/Provider/WallabagAuthenticationProvider.php b/src/Wallabag/CoreBundle/Security/Authentication/Provider/WallabagAuthenticationProvider.php
new file mode 100644
index 00000000..1c7c5fae
--- /dev/null
+++ b/src/Wallabag/CoreBundle/Security/Authentication/Provider/WallabagAuthenticationProvider.php
@@ -0,0 +1,89 @@
+<?php
+
+namespace Wallabag\CoreBundle\Security\Authentication\Provider;
+
+use Symfony\Component\Security\Core\Encoder\EncoderFactoryInterface;
+use Symfony\Component\Security\Core\User\UserProviderInterface;
+use Symfony\Component\Security\Core\User\UserCheckerInterface;
+use Symfony\Component\Security\Core\User\UserInterface;
+use Symfony\Component\Security\Core\Exception\UsernameNotFoundException;
+use Symfony\Component\Security\Core\Exception\AuthenticationServiceException;
+use Symfony\Component\Security\Core\Exception\BadCredentialsException;
+use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;
+use Symfony\Component\Security\Core\Authentication\Provider\UserAuthenticationProvider;
+
+class WallabagAuthenticationProvider extends UserAuthenticationProvider
+{
+    private $encoderFactory;
+    private $userProvider;
+
+    /**
+     * Constructor.
+     *
+     * @param UserProviderInterface   $userProvider               An UserProviderInterface instance
+     * @param UserCheckerInterface    $userChecker                An UserCheckerInterface instance
+     * @param string                  $providerKey                The provider key
+     * @param EncoderFactoryInterface $encoderFactory             An EncoderFactoryInterface instance
+     * @param bool                    $hideUserNotFoundExceptions Whether to hide user not found exception or not
+     */
+    public function __construct(UserProviderInterface $userProvider, UserCheckerInterface $userChecker, $providerKey, EncoderFactoryInterface $encoderFactory, $hideUserNotFoundExceptions = true)
+    {
+        parent::__construct($userChecker, $providerKey, $hideUserNotFoundExceptions);
+
+        $this->encoderFactory = $encoderFactory;
+        $this->userProvider = $userProvider;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function checkAuthentication(UserInterface $user, UsernamePasswordToken $token)
+    {
+        $currentUser = $token->getUser();
+        if ($currentUser instanceof UserInterface) {
+            if ($currentUser->getPassword() !== $user->getPassword()) {
+                throw new BadCredentialsException('The credentials were changed from another session.');
+            }
+        } else {
+            if ("" === ($presentedPassword = $token->getCredentials())) {
+                throw new BadCredentialsException('The presented password cannot be empty.');
+            }
+
+            // give username, it's used to hash the password
+            $encoder = $this->encoderFactory->getEncoder($user);
+            $encoder->setUsername($user->getUsername());
+
+            if (!$encoder->isPasswordValid($user->getPassword(), $presentedPassword, $user->getSalt())) {
+                throw new BadCredentialsException('The presented password is invalid.');
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function retrieveUser($username, UsernamePasswordToken $token)
+    {
+        $user = $token->getUser();
+        if ($user instanceof UserInterface) {
+            return $user;
+        }
+
+        try {
+            $user = $this->userProvider->loadUserByUsername($username);
+
+            if (!$user instanceof UserInterface) {
+                throw new AuthenticationServiceException('The user provider must return a UserInterface object.');
+            }
+
+            return $user;
+        } catch (UsernameNotFoundException $notFound) {
+            $notFound->setUsername($username);
+            throw $notFound;
+        } catch (\Exception $repositoryProblem) {
+            $ex = new AuthenticationServiceException($repositoryProblem->getMessage(), 0, $repositoryProblem);
+            $ex->setToken($token);
+            throw $ex;
+        }
+    }
+}
-- 
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