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c# - Azure B2C 身份提供商登录失败 : AADB2C99002: User does not exist

转载 作者:行者123 更新时间:2023-12-02 00:54:50 24 4
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我正在尝试 Azure AD B2C,并且我已通过 Azure 门户添加了 Google 和 Microsoft 身份提供商。

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当我尝试使用 Microsoft 或 Google IP 登录时,我总是在 OnAuthenticationFailed-Handler 中收到以下错误消息:

AADB2C99002:用户不存在。请先注册,然后才能登录。

但是当我使用 Azure B2C 提供的“本地帐户登录”时,一切正常。我的配置中是否缺少某些内容?

以下代码片段显示了我的 OWIN 配置。

   private void ConfigureAuthentication(IAppBuilder app)
{
app.SetDefaultSignInAsAuthenticationType(CookieAuthenticationDefaults.AuthenticationType);

app.UseCookieAuthentication(new CookieAuthenticationOptions());

OpenIdConnectAuthenticationOptions options = new OpenIdConnectAuthenticationOptions
{
// These are standard OpenID Connect parameters, with values pulled from web.config
ClientId = clientId,
RedirectUri = redirectUri,
PostLogoutRedirectUri = redirectUri,
Notifications = new OpenIdConnectAuthenticationNotifications
{
AuthenticationFailed = OnAuthenticationFailed,
RedirectToIdentityProvider = OnRedirectToIdentityProvider,
AuthorizationCodeReceived = OnAuthorizationCodeReceived,
SecurityTokenValidated = context => {
return null;
}
},

Scope = "openid offline_access",

// The PolicyConfigurationManager takes care of getting the correct Azure AD authentication
// endpoints from the OpenID Connect metadata endpoint. It is included in the PolicyAuthHelpers folder.
ConfigurationManager = new PolicyConfigurationManager(
String.Format(CultureInfo.InvariantCulture, aadInstance, tenant, "/v2.0", OIDCMetadataSuffix),
new string[] { SignUpPolicyId, SignInPolicyId, ProfilePolicyId }),

// This piece is optional - it is used for displaying the user's name in the navigation bar.
TokenValidationParameters = new System.IdentityModel.Tokens.TokenValidationParameters
{
NameClaimType = "name",
},
};

app.UseOpenIdConnectAuthentication(options);
}

// This notification can be used to manipulate the OIDC request before it is sent. Here we use it to send the correct policy.
private async Task OnRedirectToIdentityProvider(RedirectToIdentityProviderNotification<OpenIdConnectMessage, OpenIdConnectAuthenticationOptions> notification)
{
PolicyConfigurationManager mgr = notification.Options.ConfigurationManager as PolicyConfigurationManager;
if (notification.ProtocolMessage.RequestType == OpenIdConnectRequestType.LogoutRequest)
{
OpenIdConnectConfiguration config = await mgr.GetConfigurationByPolicyAsync(CancellationToken.None, notification.OwinContext.Authentication.AuthenticationResponseRevoke.Properties.Dictionary[AzureB2C.PolicyKey]);
notification.ProtocolMessage.IssuerAddress = config.EndSessionEndpoint;
}
else
{
OpenIdConnectConfiguration config = await mgr.GetConfigurationByPolicyAsync(CancellationToken.None, notification.OwinContext.Authentication.AuthenticationResponseChallenge.Properties.Dictionary[AzureB2C.PolicyKey]);
notification.ProtocolMessage.IssuerAddress = config.AuthorizationEndpoint;
}
}

private async Task OnAuthorizationCodeReceived(AuthorizationCodeReceivedNotification notification)
{
// The user's objectId is extracted from the claims provided in the id_token, and used to cache tokens in ADAL
// The authority is constructed by appending your B2C directory's name to "https://login.microsoftonline.com/"
// The client credential is where you provide your application secret, and is used to authenticate the application to Azure AD
string userObjectID = notification.AuthenticationTicket.Identity.FindFirst("http://schemas.microsoft.com/identity/claims/objectidentifier").Value;
string authority = String.Format(CultureInfo.InvariantCulture, aadInstance, tenant, string.Empty, string.Empty);
ClientCredential credential = new ClientCredential(clientId, clientSecret);

// We don't care which policy is used to access the TaskService, so let's use the most recent policy
string mostRecentPolicy = notification.AuthenticationTicket.Identity.FindFirst(AzureB2C.AcrClaimType).Value;

// The Authentication Context is ADAL's primary class, which represents your connection to your B2C directory
// ADAL uses an in-memory token cache by default. In this case, we've extended the default cache to use a simple per-user session cache
AuthenticationContext authContext = new AuthenticationContext(authority, new NaiveSessionCache(userObjectID));

// Here you ask for a token using the web app's clientId as the scope, since the web app and service share the same clientId.
// The token will be stored in the ADAL token cache, for use in our controllers
AuthenticationResult result = await authContext.AcquireTokenByAuthorizationCodeAsync(notification.Code, new Uri(redirectUri), credential, new string[] { clientId }, mostRecentPolicy);
}

// Used for avoiding yellow-screen-of-death
private Task OnAuthenticationFailed(AuthenticationFailedNotification<OpenIdConnectMessage, OpenIdConnectAuthenticationOptions> notification)
{
_log.Error("AuthenticationFailed!\r\nError={0}\r\nErrorDescription={1}\r\n{0}",
notification.ProtocolMessage.Error,
notification.ProtocolMessage.ErrorDescription,
notification.Exception.ToString());

notification.HandleResponse();
notification.Response.Redirect("/Home/OpenIdError?message=" + notification.ProtocolMessage.ErrorDescription);
return Task.FromResult(0);
}
}

最佳答案

在登录之前,外部身份首先需要“注册”。注册期间,外部身份会链接到 B2C

在注册页面中,您可以询问用户的其他属性,例如客户编号。对于外部身份和 B2C 中的本地帐户用户,您需要此信息,两者之间没有区别。

与在没有 B2C 的情况下添加身份提供商相比,这是不同的行为,每次登录都可以正常工作。

编辑:就像康斯坦丁提到的那样,新的组合注册或登录政策解决了这个问题: https://azure.microsoft.com/en-us/documentation/articles/active-directory-b2c-reference-policies/#create-a-sign-up-or-sign-in-policy

关于c# - Azure B2C 身份提供商登录失败 : AADB2C99002: User does not exist,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36656777/

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