openid-connect - 针对外部 OIDC 提供商进行身份验证时，Keycloak-Gatekeeper 不会填充角色或组

Question

我正在尝试将 keycloak-gatekeeper 设置为 docker 容器前面的反向代理，以便提供针对容器的身份验证和授权。我使用 FusionAuth 作为 OIDC 兼容的身份提供程序，并设法使用授权流程让 keycloak-getekeeper 使用它。 当我尝试根据用户的角色或组成员身份限制哪些用户可以访问资源时，问题就出现了。

目前，所有请求均被拒绝。当我查看服务器上的日志时，我可以看到以下消息:

1.5548202388823931e+09  info    keycloak-gatekeeper/middleware.go:90    client request  {"latency": 0.039427852, "status": 403, "bytes": 0, "client_ip": "127.0.0.1:40866", "method": "GET", "path": "/"}
1.5548202614442139e+09  error   keycloak-gatekeeper/middleware.go:108   no session found in request, redirecting for authorization  {"error": "authentication session not found"}
1.5548202614443152e+09  info    keycloak-gatekeeper/middleware.go:90    client request  {"latency": 0.000108426, "status": 307, "bytes": 95, "client_ip": "127.0.0.1:40866", "method": "GET", "path": "/"}
1.5548202614823494e+09  debug   keycloak-gatekeeper/handlers.go:88  incoming authorization request from client address  {"access_type": "", "auth_url": "https://identity.***********.io/oauth2/authorize?client_id=********&redirect_uri=https%3A%2F%2F********.io%2Foauth%2Fcallback&response_type=code&scope=openid+email+profile&state=********", "client_ip": "127.0.0.1:40866"}
1.554820261482426e+09   info    keycloak-gatekeeper/middleware.go:90    client request  {"latency": 0.000132558, "status": 307, "bytes": 298, "client_ip": "127.0.0.1:40866", "method": "GET", "path": "/oauth/authorize"}
1.5548203051960323e+09  info    keycloak-gatekeeper/handlers.go:167 issuing access token for user   {"email": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="3c4f535159494f594e7c5853515d5552125f5351" rel="noreferrer noopener nofollow">[email protected]</a>", "expires": "2019-04-09T15:31:45Z", "duration": "59m59.803970144s"}
1.5548203051961453e+09  info    keycloak-gatekeeper/middleware.go:90    client request  {"latency": 0.099124835, "status": 307, "bytes": 37, "client_ip": "127.0.0.1:40866", "method": "GET", "path": "/oauth/callback"}
1.5548203052413428e+09  debug   keycloak-gatekeeper/session.go:51   found the user identity {"id": "5f165d68-9350-47e6-9152-d76260cabd7c", "name": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="0c7f636169797f697e4c6863616d6562226f6361" rel="noreferrer noopener nofollow">[email protected]</a>", "email": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="d7a4b8bab2a2a4b2a597b3b8bab6beb9f9b4b8ba" rel="noreferrer noopener nofollow">[email protected]</a>", "roles": "", "groups": ""}
1.5548203052417035e+09  warn    keycloak-gatekeeper/middleware.go:307   access denied, invalid roles    {"access": "denied", "email": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="493a26242c3c3a2c3b092d2624282027672a2624" rel="noreferrer noopener nofollow">[email protected]</a>", "resource": "/*", "roles": "role-1,role-3"}
1.5548203052417736e+09  info    keycloak-gatekeeper/middleware.go:90    client request  {"latency": 0.000509757, "status": 403, "bytes": 0, "client_ip": "127.0.0.1:40866", "method": "GET", "path": "/"}

据我所知，我拒绝的原因是因为角色尚未填充。 我还运行了一个客户端来为用户获取 JWT(通过隐式流程)，该用户返回时看起来如下所示:

{
  "aud": "************************",
  "exp": 1554822076,
  "iat": 1554818476,
  "iss": "https://identity.*******.io",
  "sub": "****************",
  "authenticationType": "PASSWORD",
  "email": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="5625393b33232533241632393b373f387835393b" rel="noreferrer noopener nofollow">[email protected]</a>",
  "email_verified": true,
  "applicationId": "*****************",
  "roles": [
    "role-1",
    "role-3"
  ]
}

从中，我可以看到用户处于正确的角色。

目前我有点不知道问题出在哪里，或者如何更详细地调试 keycloak-gatekeeper 实例

Answer 1

看起来 keycloak-gatekeeper 只能处理 keycloak 提供的 token 中的领域和客户端角色 ( https://github.com/keycloak/keycloak-gatekeeper/blob/master/user_context.go )

以下是从 token 中提取角色的相关代码:

// @step: extract the realm roles
    var roleList []string
    if realmRoles, found := claims[claimRealmAccess].(map[string]interface{}); found {
        if roles, found := realmRoles[claimResourceRoles]; found {
            for _, r := range roles.([]interface{}) {
                roleList = append(roleList, fmt.Sprintf("%s", r))
            }
        }
    }

    // @step: extract the client roles from the access token
    if accesses, found := claims[claimResourceAccess].(map[string]interface{}); found {
        for name, list := range accesses {
            scopes := list.(map[string]interface{})
            if roles, found := scopes[claimResourceRoles]; found {
                for _, r := range roles.([]interface{}) {
                    roleList = append(roleList, fmt.Sprintf("%s:%s", name, r))
                }
            }
        }
    }

这可以解释为什么我的 token 中的声明没有出现