8

我想从控制器内部检查它是否是安全页面。这个怎么做 ？

我的用例如下：

  • 用户可以注册和登录
  • 如果他登录并尝试访问安全页面，他将被重定向到“测试版”页面，直到 6 月底。
  • 如果他试图访问一个普通页面（不安全），他将能够访问它而无需任何重定向。

谢谢你的帮助 ！

奥雷尔

4

2 回答 2

14

当 Symfony2 处理请求时，它会将 url 模式与app/config/security.yml. 当 url 模式与防火墙模式匹配时，Symfony2 会创建一些侦听器对象并调用handle这些对象的方法。如果任何监听器返回一个Response对象，则循环中断并且 Symfony2 输出响应。身份验证部分在身份验证侦听器中完成。它们是从匹配的防火墙中定义的配置创建的，例如form_login等http_basic。如果用户未通过身份验证，则经过身份验证的侦听器创建一个RedirectResponse对象以将用户重定向到登录页面。对于您的情况，您可以通过创建自定义身份验证侦听器并将其添加到安全页面防火墙中来作弊。示例实现如下，

创建一个Token类，

namespace Your\Namespace;

use Symfony\Component\Security\Core\Authentication\Token\AbstractToken;

class MyToken extends AbstractToken
{
    public function __construct(array $roles = array())
    {
        parent::__construct($roles);
    }

    public function getCredentials()
    {
        return '';
    }
}

创建一个实现AuthenticationProviderInterface. 对于form_login侦听器，它使用给定的UserProvider. 在这种情况下，它什么也不做。

namespace Your\Namespace;

use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Authentication\Provider\AuthenticationProviderInterface;
use Acme\BaseBundle\Firewall\MyToken;

class MyAuthProvider implements AuthenticationProviderInterface
{

    public function authenticate(TokenInterface $token)
    {
        if (!$this->supports($token)) {
            return null;
        }

        throw new \Exception('you should not get here');
    }

    public function supports(TokenInterface $token)
    {
        return $token instanceof MyToken;
    }

创建一个入口点类。RedirectResponse侦听器将从此类中创建一个。

namespace Your\Namespace;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Security\Core\Exception\AuthenticationException;
use Symfony\Component\Security\Http\EntryPoint\AuthenticationEntryPointInterface;
use Symfony\Component\Security\Http\HttpUtils;


class MyAuthenticationEntryPoint implements AuthenticationEntryPointInterface
{
    private $httpUtils;
    private $redirectPath;

    public function __construct(HttpUtils $httpUtils, $redirectPath)
    {
        $this->httpUtils = $httpUtils;
        $this->redirectPath = $redirectPath;
    }

    /**
     * {@inheritdoc}
     */
    public function start(Request $request, AuthenticationException $authException = null)
    {
        //redirect action goes here
        return $this->httpUtils->createRedirectResponse($request, $this->redirectPath);
    }

创建一个监听器类。在这里，您将实现您的重定向逻辑。

namespace Your\Namespace;

use Symfony\Component\Security\Http\Firewall\ListenerInterface;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\Security\Core\SecurityContextInterface;
use Symfony\Component\Security\Http\EntryPoint\AuthenticationEntryPointInterface;

class MyAuthenticationListener implements ListenerInterface
{
    private $securityContext;
    private $authenticationEntryPoint;


    public function __construct(SecurityContextInterface $securityContext, AuthenticationEntryPointInterface $authenticationEntryPoint)
    {
        $this->securityContext = $securityContext;
        $this->authenticationEntryPoint = $authenticationEntryPoint;
    }

    public function handle(GetResponseEvent $event)
    {
        $token = $this->securityContext->getToken();
        $request = $event->getRequest();
        if($token === null){
            return;
        }

        //add your logic
        $redirect = // boolean value based on your logic

        if($token->isAuthenticated() && $redirect){

            $response = $this->authenticationEntryPoint->start($request);
            $event->setResponse($response);
            return;
        }
    }

}

创建服务。

<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">

    <services>

        <service id="my_firewall.security.authentication.listener"
                 class="Your\Namespace\MyAuthenticationListener"
                 parent="security.authentication.listener.abstract"
                 abstract="true">
            <argument type="service" id="security.context" />
            <argument /> <!-- Entry Point -->
        </service>

        <service id="my_firewall.entry_point" class="Your\Namespace\MyAuthenticationEntryPoint" public="false" ></service>

        <service id="my_firewall.auth_provider" class="Your\Namespace\MyAuthProvider" public="false"></service>
    </services>

</container>

注册监听器。Security/Factory在您的 bundles文件夹中创建一个名为的DependencyInjection文件夹。然后创建工厂类。

namespace Your\Bundle\DependencyInjection\Security\Factory;

use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\DependencyInjection\DefinitionDecorator;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Bundle\SecurityBundle\DependencyInjection\Security\Factory\SecurityFactoryInterface;
use Symfony\Component\Config\Definition\Builder\NodeDefinition;

class MyFirewallFactory implements SecurityFactoryInterface
{

    public function create(ContainerBuilder $container, $id, $config, $userProvider, $defaultEntryPoint)
    {
        $provider = 'my_firewall.auth_provider.'.$id;
        $container->setDefinition($provider, new DefinitionDecorator('my_firewall.auth_provider'));

        // entry point
        $entryPointId = $this->createEntryPoint($container, $id, $config, $defaultEntryPoint);

        // listener
        $listenerId = 'my_firewall.security.authentication.listener'.$id;
        $listener = $container->setDefinition($listenerId, new DefinitionDecorator('my_firewall.security.authentication.listener'));
        $listener->replaceArgument(1, new Reference($entryPointId));
        return array($provider, $listenerId, $entryPointId);
    }

    public function getPosition()
    {
        return 'pre_auth';
    }

    public function getKey()
    {
        return 'my_firewall'; //the listener name
    }

    protected function getListenerId()
    {
        return 'my_firewall.security.authentication.listener';
    }

    public function addConfiguration(NodeDefinition $node)
    {
        $node
            ->children()
                ->scalarNode('redirect_path')->end()
            ->end()
            ;
    }

    protected function createEntryPoint($container, $id, $config, $defaultEntryPointId)
    {
        $entryPointId = 'my_firewall.entry_point'.$id;
        $container
            ->setDefinition($entryPointId, new DefinitionDecorator('my_firewall.entry_point'))
            ->addArgument(new Reference('security.http_utils'))
            ->addArgument($config['redirect_path'])
            ;
        return $entryPointId;
    }

}

然后在您NamespaceBundle.php的捆绑文件夹中添加以下代码。

public function build(ContainerBuilder $builder){
    parent::build($builder);
    $extension = $builder->getExtension('security');
    $extension->addSecurityListenerFactory(new Security\Factory\MyFirewallFactory());
}

创建了身份验证侦听器，唷 :)。现在在你app/config/security.yml做以下。

api_area:
  pattern: ^/secured/
  provider: fos_userbundle
  form_login:
    check_path: /login_check
    login_path: /login
    csrf_provider: form.csrf_provider
  my_firewall:
    redirect_path: /beta
  logout: true
  anonymous: true
于 2012-04-12T11:48:06.020 回答
0

我不知道这是否是正确的方法但是您可以尝试以下方法

/vendor/symfony/src/Symfony/Component/HttpKernel/HttpKernel.php 有一个方法handleRaw将请求转换为响应。可以从那里访问请求对象。您可以检查客户端是否请求访问受保护的页面。如果是这样，您可以手动设置控制器，如

$request->attributes->set('_controller','your\Bundle\SecureBundle\Controller\SecureController::secureAction');

如果用户尝试访问安全页面并检查控制器内部的相同内容，另一种解决方案是设置会话

同样，这可能不是正确的方法，但它是一种可能的解决方法

于 2012-04-11T07:26:27.557 回答