Thinktecture Identity Server v3 如何防止来自外部提供商的声明？

Question

我正在尝试遵循简单指南 mvcGettingStarted。现在，我已经实现了 GoogleAuthentication 和 FacebookAuthentication 提供程序，并且一切都按预期工作，我实际上可以登录，如果我使用我的身份服务器登录，我也得到了 Role claims per用户。我想知道，如果我想保留外部提供者提供的所有声明怎么办？简单的例子。这是我的 Facebook 提供商设置的样子：

var facebookOptions = new FacebookAuthenticationOptions() {
            AuthenticationType = "Facebook",
            Caption = "Sign in with Facebook",
            AppId = "*****",
            AppSecret = "****",
            SignInAsAuthenticationType = signInAsType,
            Provider = new FacebookAuthenticationProvider() {
                OnAuthenticated = (context) => {

                    foreach (var x in context.User) {
                        context.Identity.AddClaim(new Claim(x.Key, x.Value.ToString()));
                    }

                    return Task.FromResult(context);
                }
            },
        };

        facebookOptions.Scope.Add("email");
        facebookOptions.Scope.Add("public_profile");
        facebookOptions.Scope.Add("user_friends");

        app.UseFacebookAuthentication(facebookOptions);

在 for each 循环中，我试图将所有 Facebook 声明存储在身份中，但是当我返回 SecurityTokenValidated 回调时，我的身份没有它们。

app.UseOpenIdConnectAuthentication(new OpenIdConnectAuthenticationOptions() {
            Authority = "https://localhost:44302/identity/",
            ClientId = "my_client",
            Scope = "openid profile roles email",
            RedirectUri = "https://localhost:44302/",
            ResponseType = "id_token token",
            SignInAsAuthenticationType = "Cookies",
            UseTokenLifetime = false,
            Notifications = new OpenIdConnectAuthenticationNotifications() {

                SecurityTokenValidated = async context => {
                    //let's clean up this identity

                    //context.AuthenticationTicket.Identity doesn't have the claims added in the facebook callback
                    var nid = new ClaimsIdentity(
                        context.AuthenticationTicket.Identity.AuthenticationType,
                        Constants.ClaimTypes.GivenName,
                        Constants.ClaimTypes.Role);
                    ........

是因为我在操纵两个不同的身份吗？有没有正确的方法来实现我想要做的事情？谢谢你。

Answer 1

您可以在自定义用户服务实施中执行此操作。默认值使来自外部提供者的声明可用。关于自定义用户服务的文档：https://identityserver.github.io/Documentation/docsv2/advanced/userService.html

Answer 2

正如@brock-allen 所说，用户服务是正确的方向。所以我继续实现了一个简单的 UserService

public class UserService {
    private static InMemoryUserService _service = null;
    public static InMemoryUserService Get() {
        if(_service == null)
            _service = new InMemoryUserService(Users.Get());

        return _service;
    }
}

像这样在我的工厂注册了我的用户服务

public void Configuration(IAppBuilder app) {
        AntiForgeryConfig.UniqueClaimTypeIdentifier = Constants.ClaimTypes.Subject;
        JwtSecurityTokenHandler.InboundClaimTypeMap = new Dictionary<string, string>();

        var factory = InMemoryFactory.Create(
            users: Users.Get(),
            clients: Clients.Get(),
            scopes: Scopes.Get());
        factory.UserService = new Registration<IUserService>(resolver => UserService.Get());

.....

(当然是我Startup里的Configuration方法class)

所以现在我可以在外部提供者（在本例中是 facebook）的身份验证回调中对外部用户进行身份验证，指定我需要的所有声明：

var facebookOptions = new FacebookAuthenticationOptions() {
            AuthenticationType = "Facebook",
            Caption = "Sign in with Facebook",
            AppId = "******",
            AppSecret = "*******",
            SignInAsAuthenticationType = signInAsType,
            Provider = new FacebookAuthenticationProvider() {
                OnAuthenticated = (context) => {

                    foreach (var x in context.User) {
                        context.Identity.AddClaim(new Claim(x.Key, x.Value.ToString()));
                    }

                    ExternalIdentity identity = new ExternalIdentity() {
                        Claims = context.Identity.Claims,
                        Provider = "Facebook",
                        ProviderId = "Facebook"
                    };
                    SignInMessage signInMessage = new SignInMessage();

                    UserService.Get().AuthenticateExternalAsync(identity, signInMessage);


                    return Task.FromResult(context);
                }
            },
        }

现在，我可以做到

List<Claim> claims = await UserService.Get().GetProfileDataAsync(User as ClaimsPrincipal) as List<Claim>;

并看到我的用户拥有在身份验证期间提供的所有 Facebook 声明。当然这段代码只是为了测试，还可以改进很多。

Thinktecture Identity Server v3 如何防止来自外部提供商的声明？

Thinktecture Identity Server v3 How to keep Claims from external providers?

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thinktecture-ident-server