added the Security Component and its integration into the MVC framework

Happy birthday symfony!

5 files changed, 372 insertions, 0 deletions

diff --git a/Authentication/Provider/AnonymousAuthenticationProvider.php b/Authentication/Provider/AnonymousAuthenticationProvider.php
new file mode 100644
index 0000000..67671b5
--- /dev/null
+++ b/Authentication/Provider/AnonymousAuthenticationProvider.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace Symfony\Component\Security\Authentication\Provider;
+
+use Symfony\Component\Security\Authentication\Token\TokenInterface;
+use Symfony\Component\Security\Exception\BadCredentialsException;
+use Symfony\Component\Security\Authentication\Token\AnonymousToken;
+
+/*
+ * This file is part of the Symfony framework.
+ *
+ * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+/**
+ * AnonymousAuthenticationProvider validates AnonymousToken instances.
+ *
+ * @author Fabien Potencier <fabien.potencier@symfony-project.com>
+ */
+class AnonymousAuthenticationProvider implements AuthenticationProviderInterface
+{
+    protected $key;
+
+    /**
+     * Constructor.
+     *
+     * @param string $key The key shared with the authentication token
+     */
+    public function __construct($key)
+    {
+        $this->key;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function authenticate(TokenInterface $token)
+    {
+        if (!$this->supports($token)) {
+            return null;
+        }
+
+        if ($this->key != $token->getKey()) {
+            throw new BadCredentialsException('The Token does not contain the expected key.');
+        }
+
+        return $token;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function supports($token)
+    {
+        return $token instanceof AnonymousToken;
+    }
+}
diff --git a/Authentication/Provider/AuthenticationProviderInterface.php b/Authentication/Provider/AuthenticationProviderInterface.php
new file mode 100644
index 0000000..61a428b
--- /dev/null
+++ b/Authentication/Provider/AuthenticationProviderInterface.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace Symfony\Component\Security\Authentication\Provider;
+
+use Symfony\Component\Security\Authentication\Token\TokenInterface;
+use Symfony\Component\Security\Authentication\AuthenticationManagerInterface;
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * AuthenticationProviderInterface is the interface for for all authentication providers.
+ *
+ * Concrete implementations processes specific Token instances.
+ *
+ * @author Fabien Potencier <fabien.potencier@symfony-project.com>
+ */
+interface AuthenticationProviderInterface extends AuthenticationManagerInterface
+{
+    /**
+     * Checks whether this provider supports the given token.
+     *
+     * @param TokenInterface $token A TokenInterface instance
+     *
+     * @return Boolean true if the implementation supports the Token, false otherwise
+     */
+     function supports(TokenInterface $token);
+}
diff --git a/Authentication/Provider/DaoAuthenticationProvider.php b/Authentication/Provider/DaoAuthenticationProvider.php
new file mode 100644
index 0000000..f814988
--- /dev/null
+++ b/Authentication/Provider/DaoAuthenticationProvider.php
@@ -0,0 +1,88 @@
+<?php
+
+namespace Symfony\Component\Security\Authentication\Provider;
+
+use Symfony\Component\Security\User\UserProviderInterface;
+use Symfony\Component\Security\User\AccountCheckerInterface;
+use Symfony\Component\Security\User\AccountInterface;
+use Symfony\Component\Security\Encoder\PasswordEncoderInterface;
+use Symfony\Component\Security\Encoder\PlaintextPasswordEncoder;
+use Symfony\Component\Security\Exception\UsernameNotFoundException;
+use Symfony\Component\Security\Exception\AuthenticationServiceException;
+use Symfony\Component\Security\Exception\BadCredentialsException;
+use Symfony\Component\Security\Authentication\Token\UsernamePasswordToken;
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * DaoAuthenticationProvider uses a UserProviderInterface to retrieve the user for a UsernamePasswordToken.
+ *
+ * @author Fabien Potencier <fabien.potencier@symfony-project.com>
+ */
+class DaoAuthenticationProvider extends UserAuthenticationProvider
+{
+    protected $passwordEncoder;
+    protected $userProvider;
+
+    /**
+     * Constructor.
+     *
+     * @param UserProviderInterface    $userProvider    A UserProviderInterface instance
+     * @param PasswordEncoderInterface $passwordEncoder A PasswordEncoderInterface instance
+     * @param AccountCheckerInterface  $accountChecker  An AccountCheckerInterface instance
+     */
+    public function __construct(UserProviderInterface $userProvider, AccountCheckerInterface $accountChecker, PasswordEncoderInterface $passwordEncoder = null)
+    {
+        parent::__construct($accountChecker);
+
+        if (null === $passwordEncoder) {
+            $passwordEncoder = new PlaintextPasswordEncoder();
+        }
+        $this->passwordEncoder = $passwordEncoder;
+        $this->userProvider = $userProvider;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function checkAuthentication(AccountInterface $account, UsernamePasswordToken $token)
+    {
+        if (null === $token->getCredentials()) {
+            throw new BadCredentialsException('Bad credentials');
+        }
+
+        $presentedPassword = (string) $token->getCredentials();
+
+        if (!$this->passwordEncoder->isPasswordValid($account->getPassword(), $presentedPassword, $account->getSalt())) {
+            throw new BadCredentialsException('Bad credentials');
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function retrieveUser($username, UsernamePasswordToken $token)
+    {
+        $user = null;
+        try {
+            $user = $this->userProvider->loadUserByUsername($username);
+        } catch (UsernameNotFoundException $notFound) {
+            throw $notFound;
+        } catch (\Exception $repositoryProblem) {
+            throw new AuthenticationServiceException($repositoryProblem->getMessage(), $token, 0, $repositoryProblem);
+        }
+
+        if (null === $user) {
+            throw new AuthenticationServiceException('UserProvider returned null.');
+        }
+
+        return $user;
+    }
+}
diff --git a/Authentication/Provider/PreAuthenticatedAuthenticationProvider.php b/Authentication/Provider/PreAuthenticatedAuthenticationProvider.php
new file mode 100644
index 0000000..8617fdb
--- /dev/null
+++ b/Authentication/Provider/PreAuthenticatedAuthenticationProvider.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace Symfony\Component\Security\Authentication\Provider;
+
+use Symfony\Component\Security\User\UserProviderInterface;
+use Symfony\Component\Security\User\AccountCheckerInterface;
+use Symfony\Component\Security\Exception\BadCredentialsException;
+use Symfony\Component\Security\Authentication\Token\PreAuthenticatedToken;
+use Symfony\Component\Security\Authentication\Token\TokenInterface;
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Processes a pre-authenticated authentication request. The request will
+ * typically originate from a {@link org.springframework.security.web.authentication.preauth.AbstractPreAuthenticatedProcessingFilter}
+ * subclass.
+ *
+ * This authentication provider will not perform any checks on authentication
+ * requests, as they should already be pre-authenticated. However, the
+ * AuthenticationUserDetailsService implementation may still throw a UsernameNotFoundException, for example.
+ *
+ * @author Ruud Senden
+ * @since 2.0
+ */
+class PreAuthenticatedAuthenticationProvider implements AuthenticationProviderInterface
+{
+    protected $userProvider;
+    protected $accountChecker;
+
+    /**
+     * Constructor.
+     *
+     * @param UserProviderInterface   $userProvider    A UserProviderInterface instance
+     * @param AccountCheckerInterface $accountChecker  An AccountCheckerInterface instance
+     */
+    public function __construct(UserProviderInterface $userProvider, AccountCheckerInterface $accountChecker)
+    {
+        $this->userProvider = $userProvider;
+        $this->accountChecker = $accountChecker;
+    }
+
+     /**
+      * {@inheritdoc}
+      */
+     public function authenticate(TokenInterface $token)
+     {
+        if (!$this->supports($token)) {
+            return null;
+        }
+
+        if (null === $token->getUser()) {
+            throw new BadCredentialsException('No pre-authenticated principal found in request.');
+        }
+/*
+        if (null === $token->getCredentials()) {
+            throw new BadCredentialsException('No pre-authenticated credentials found in request.');
+        }
+*/
+        $user = $this->userProvider->loadUserByUsername($token->getUser());
+
+        $this->accountChecker->checkPostAuth($user);
+
+        return new PreAuthenticatedToken($user, $token->getCredentials(), $user->getRoles());
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function supports(TokenInterface $token)
+    {
+        return $token instanceof PreAuthenticatedToken;
+    }
+}
diff --git a/Authentication/Provider/UserAuthenticationProvider.php b/Authentication/Provider/UserAuthenticationProvider.php
new file mode 100644
index 0000000..ddd98c3
--- /dev/null
+++ b/Authentication/Provider/UserAuthenticationProvider.php
@@ -0,0 +1,110 @@
+<?php
+
+namespace Symfony\Component\Security\Authentication\Provider;
+
+use Symfony\Component\Security\User\AccountInterface;
+use Symfony\Component\Security\User\AccountCheckerInterface;
+use Symfony\Component\Security\Exception\UsernameNotFoundException;
+use Symfony\Component\Security\Exception\AuthenticationException;
+use Symfony\Component\Security\Exception\BadCredentialsException;
+use Symfony\Component\Security\Authentication\Token\UsernamePasswordToken;
+use Symfony\Component\Security\Authentication\Token\TokenInterface;
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * UserProviderInterface retrieves users for UsernamePasswordToken tokens.
+ *
+ * @author Fabien Potencier <fabien.potencier@symfony-project.com>
+ */
+abstract class UserAuthenticationProvider implements AuthenticationProviderInterface
+{
+    protected $hideUserNotFoundExceptions;
+    protected $accountChecker;
+
+    /**
+     * Constructor.
+     *
+     * @param AccountCheckerInterface $accountChecker             An AccountCheckerInterface interface
+     * @param Boolean                 $hideUserNotFoundExceptions Whether to hide user not found exception or not
+     */
+    public function __construct(AccountCheckerInterface $accountChecker, $hideUserNotFoundExceptions = true)
+    {
+        $this->accountChecker = $accountChecker;
+        $this->hideUserNotFoundExceptions = $hideUserNotFoundExceptions;
+    }
+
+    /**
+     * Does additional checks on the user and token (like validating the credentials).
+     *
+     * @param AccountInterface      $account The retrieved AccountInterface instance
+     * @param UsernamePasswordToken $token   The UsernamePasswordToken token to be authenticated
+     *
+     * @throws AuthenticationException if the credentials could not be validated
+     */
+    abstract protected function checkAuthentication(AccountInterface $account, UsernamePasswordToken $token);
+
+    /**
+     * {@inheritdoc}
+     */
+    public function authenticate(TokenInterface $token)
+    {
+        if (!$this->supports($token)) {
+            return null;
+        }
+
+        $username = null === $token->getUser() ? 'NONE_PROVIDED' : (string) $token;
+
+        try {
+            $user = $this->retrieveUser($username, $token);
+        } catch (UsernameNotFoundException $notFound) {
+            if ($this->hideUserNotFoundExceptions) {
+                throw new BadCredentialsException('Bad credentials', 0, $notFound);
+            }
+
+            throw $notFound;
+        }
+
+        if (null === $user) {
+            throw new \LogicException('The retrieveUser() methods returned null which should not be possible.');
+        }
+
+        try {
+            $this->accountChecker->checkPreAuth($user);
+            $this->checkAuthentication($user, $token);
+        } catch (AuthenticationException $e) {
+            throw $e;
+        }
+
+        $this->accountChecker->checkPostAuth($user);
+
+        return new UsernamePasswordToken($user, $token->getCredentials(), $user->getRoles());
+    }
+
+    /**
+     * Retrieves the user from an implementation-specific location.
+     *
+     * @param string                $username The username to retrieve
+     * @param UsernamePasswordToken $token    The Token
+     *
+     * @return mixed The user
+     *
+     * @throws AuthenticationException if the credentials could not be validated
+     */
+    abstract protected function retrieveUser($username, UsernamePasswordToken $token);
+
+    /**
+     * {@inheritdoc}
+     */
+    public function supports(TokenInterface $token)
+    {
+        return $token instanceof UsernamePasswordToken;
+    }
+}