帶有警衛的 Symfony 身份驗證總是返回“找不到用戶名”。

Question

我知道有很多關於這個主題的線索，但沒有一個對我有幫助......

我正在開發一個應用程序，您必須在該應用程序的每個請求的標頭中發送訪問令牌。 我使用 Guard 管理這種安全性。

對於我的測試，當我發送一個錯誤的令牌時，或者當我不發送它時，必須適當地調用 start() 或 onAuthenticationFailure() 方法。 但它不起作用。 我每次都有同樣的錯誤。 看起來這些方法從未被調用過。

未發送授權

GET /BileMo/web/app_dev.php/api/products/2 HTTP/1.1
Host: localhost:8888
Content-Type: application/json

{
     "message": "Username could not be found."
}

無效的訪問令牌

GET /BileMo/web/app_dev.php/api/products/2 HTTP/1.1
Host: localhost:8888
Content-Type: application/json
Authorization: *Fake Facebook Token*

{
     "message": "Username could not be found."
}

而不是：

{
       "message": "Authorization required"
}

要么

{
       "message": "The facebook access token is wrong!"
}

使用正確的訪問令牌，請求將正確返回給用戶。

請求示例：

GET /BileMo/web/app_dev.php/api/products/2 HTTP/1.1
Host: localhost:8888
Content-Type: application/json
Authorization: *Facebook Token*

以下是我的代碼的重要部分：

安全.yml

security:
    encoders:
        FOS\UserBundle\Model\UserInterface: sha512

    role_hierarchy:
        ROLE_ADMIN:       ROLE_USER
        ROLE_SUPER_ADMIN: ROLE_USER

    providers:
        fos_userbundle:
            id: fos_user.user_provider.username_email

        api_key_user_provider:
            entity:
                class: FacebookTokenBundle:User
                property: facebook_access_token

    firewalls:
        api:
            pattern: ^/api
            stateless: true
            anonymous: false
            guard:
                authenticators:
                    - AppBundle\Security\FacebookAuthenticator

        dev:
            pattern:  ^/(_(profiler|wdt)|css|images|js)/
            security: false

        main:
            pattern: ^/
            form_login:
                provider: fos_userbundle
                csrf_token_generator: security.csrf.token_manager
                login_path: /login
                check_path: /login_check

            oauth:
                resource_owners:
                    facebook:           "/login/check-facebook"
                login_path:        /login
                failure_path:      /login

                oauth_user_provider:
                    #this is my custom user provider, created from FOSUBUserProvider - will manage the
                    #automatic user registration on your site, with data from the provider (facebook. google, etc.)
                    service: my_user_provider
            logout:       true
            anonymous:    true


        login:
            pattern:  ^/login$
            security: false

            remember_me:
                secret: "%secret%"
                lifetime: 31536000 # 365 days in seconds
                path: /
                domain: ~ # Defaults to the current domain from $_SERVER

    access_control:
        - { path: ^/login$, role: IS_AUTHENTICATED_ANONYMOUSLY }
        - { path: ^/register, role: IS_AUTHENTICATED_ANONYMOUSLY }
        - { path: ^/resetting, role: IS_AUTHENTICATED_ANONYMOUSLY }
        - { path: ^/admin/, role: ROLE_ADMIN }
        - { path: ^/api, role: ROLE_USER }

FacebookAuthenticator.php

namespace AppBundle\Security;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Security\Core\User\UserInterface;
use Symfony\Component\Security\Guard\AbstractGuardAuthenticator;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Exception\AuthenticationException;
use HWI\Bundle\OAuthBundle\OAuth\Response\UserResponseInterface;
use Doctrine\ORM\EntityManager;
use Symfony\Component\Security\Core\User\UserProviderInterface;

class FacebookAuthenticator extends AbstractGuardAuthenticator
{
    public function __construct(EntityManager $em)
    {
        $this->em = $em;
    }

    /**
     * Called when authentication is needed, but it's not sent
     */
    public function start(Request $request, AuthenticationException $authException = null)
    {
        $data = array(
            // you might translate this message
            'message' => 'Authentication Required'
        );

        return new JsonResponse($data, Response::HTTP_UNAUTHORIZED);
    }
    /**
     * Called on every request. Return whatever credentials you want to
     * be passed to getUser(). Returning null will cause this authenticator
     * to be skipped.
     */
    public function getCredentials(Request $request)
    {
        if (!$token = $request->headers->get('Authorization')) {
            // No token?
            $token = null;
        }

        // What you return here will be passed to getUser() as $credentials
        return array(
            'token' => $token,
        );
    }

    public function getUser($credentials, UserProviderInterface $userProvider)
    {
        $user = $this->em->getRepository('FacebookTokenBundle:User')
            ->findOneBy(array('facebook_access_token' => $credentials));
        return $user;

    }

    public function checkCredentials($credentials, UserInterface $user)
    {
        if ($user->getFacebookAccessToken() === $credentials['token']) {
            return true;
        }
            return new JsonResponse(array('message' => 'The facebook access token is wrong!', Response::HTTP_FORBIDDEN));
    }

    public function onAuthenticationSuccess(Request $request, TokenInterface $token, $providerKey)
    {
        // on success, let the request continue
        return null;
    }

    public function onAuthenticationFailure(Request $request, AuthenticationException $exception)
    {
        $data = array(
            'message' => strtr($exception->getMessageKey(), $exception->getMessageData())

            // or to translate this message
            // $this->translator->trans($exception->getMessageKey(), $exception->getMessageData())
        );

        return new JsonResponse($data, Response::HTTP_FORBIDDEN);
    }

    public function supportsRememberMe()
    {
        return false;
    }
}

Answer 1

這種行為是意料之中的。 AbstractGuardAuthenticator 的接口過於通用，如果需要，您需要根據需要對其進行定制。

例如，要出現錯誤“需要授權” - 您可以在 getCredentials() 方法中拋出 AuthenticationException 。 異常將在 symfony 核心中被捕獲，並且方法 start() 將最終被調用。

public function getCredentials(Request $request)
{
    if (!$request->headers->has('Authorization')) {
        throw new AuthenticationException();
    }
    ...
}

方法 onAuthenticationFailure() 通常用於在憑據錯誤的情況下將用戶重定向到登錄頁面。 如果標題中有 API 密鑰，則不需要此功能。 同樣在當前實現中如何分離，何時“API 密鑰不正確”和“未找到用戶”？

Answer 2

上面的答案有點正確，但有一些更正：

認證（后衛）內拋出的任何異常本身會引發onAuthenticationFailure()

public function onAuthenticationFailure(Request $request, AuthenticationException $exception): JsonResponse
{
    return new JsonResponse(['message' => 'Forbidden'], Response::HTTP_FORBIDDEN);
}

public function start(Request $request, AuthenticationException $authException = null): JsonResponse
{
    return new JsonResponse(['message' => 'Authentication Required'], Response::HTTP_UNAUTHORIZED);
}

例如，當您從應用程序中（例如在控制器中）拋出AccessDeniedException時，將調用方法start() 。 也許一個很好的用例是，比如說，你想將一個特定用戶列入一條特定路線的黑名單，並且你不想用不必要的膨脹來填充你的保護驗證器。

/** 
 * @Route("/something-special")
 */
public function somethingSpecial()
{
    if ($this->getUser()->getUsername() === 'a_banned_user') {
        throw new AccessDeniedException();
    }

    // ...
}

然后使用以下命令進行測試：

$ curl -H "Auth-Header-Name: the_auth_token" http://site.local/something-special
{"message":"Authentication Required"}

---

但是，另一方面，如果由於缺少令牌標頭而引發異常，則onAuthenticationFailure()將改為運行：

public function getCredentials(Request $request): array
{
    if (!$request->headers->has('Authorization')) {
        throw new AuthenticationException('Authentication header missing.');
    }

    // ...
}

然后用（注意： AuthenticationException 消息在 onAuthenticationFailure() 中被忽略，只返回一個通用的“禁止”消息，如上所示）：

$ curl http://site.local/something-special
{"message":"Forbidden"}