我有一个 MVC 应用程序，正在尝试向 Azure AD B2C 进行身份验证。我想使用拒绝=“？”我的 web.config 中的属性。一切都很好，直到我在身份验证后被重定向回我的应用程序，在这种情况下，asp.net 没有看到我的用户已获得授权，并且我被发送回 B2C 登录页面，这会导致无限循环。
启动.Auth.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
// The following using statements were added for this sample
using Owin;
using Microsoft.Owin.Security;
using Microsoft.Owin.Security.Cookies;
using Microsoft.Owin.Security.OpenIdConnect;
using System.Threading.Tasks;
using Microsoft.Owin.Security.Notifications;
using Microsoft.IdentityModel.Protocols;
using System.Web.Mvc;
using System.Configuration;
using System.IdentityModel.Tokens;
using WebApp_OpenIDConnect_DotNet_B2C.Policies;
using System.Threading;
using System.Globalization;
using Microsoft.Owin;
namespace WebApp_OpenIDConnect_DotNet_B2C
{
public partial class Startup
{
// The ACR claim is used to indicate which policy was executed
public const string AcrClaimType = "http://schemas.microsoft.com/claims/authnclassreference";
public const string PolicyKey = "b2cpolicy";
public const string OIDCMetadataSuffix = "/.well-known/openid-configuration";
// App config settings
private static string clientId = ConfigurationManager.AppSettings["ida:ClientId"];
private static string aadInstance = ConfigurationManager.AppSettings["ida:AadInstance"];
private static string tenant = ConfigurationManager.AppSettings["ida:Tenant"];
private static string redirectUri = ConfigurationManager.AppSettings["ida:RedirectUri"];
// B2C policy identifiers
public static string SignUpPolicyId = ConfigurationManager.AppSettings["ida:SignUpPolicyId"];
public static string SignInPolicyId = ConfigurationManager.AppSettings["ida:SignInPolicyId"];
public static string ProfilePolicyId = ConfigurationManager.AppSettings["ida:UserProfilePolicyId"];
public void ConfigureAuth(IAppBuilder app)
{
app.SetDefaultSignInAsAuthenticationType(CookieAuthenticationDefaults.AuthenticationType);
System.Web.Mvc.UrlHelper url = new System.Web.Mvc.UrlHelper(HttpContext.Current.Request.RequestContext);
app.UseCookieAuthentication(new CookieAuthenticationOptions
{
LoginPath = new PathString(url.Action("SignIn", "Account"))
});
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 = AuthenticationFailed,
RedirectToIdentityProvider = OnRedirectToIdentityProvider,
},
Scope = "openid",
ResponseType = "id_token",
// 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 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[Startup.PolicyKey]);
notification.ProtocolMessage.IssuerAddress = config.EndSessionEndpoint;
}
else
{
OpenIdConnectConfiguration config = await mgr.GetConfigurationByPolicyAsync(CancellationToken.None, notification.OwinContext.Authentication.AuthenticationResponseChallenge.Properties.Dictionary[Startup.PolicyKey]);
notification.ProtocolMessage.IssuerAddress = config.AuthorizationEndpoint;
}
}
// Used for avoiding yellow-screen-of-death
private Task AuthenticationFailed(AuthenticationFailedNotification<OpenIdConnectMessage, OpenIdConnectAuthenticationOptions> notification)
{
notification.HandleResponse();
notification.Response.Redirect("/Home/Error?message=" + notification.Exception.Message);
return Task.FromResult(0);
}
}
}
网络配置
<?xml version="1.0" encoding="utf-8"?>
<!--
For more information on how to configure your ASP.NET application, please visit
http://go.microsoft.com/fwlink/?LinkId=301880
-->
<configuration>
<appSettings>
<add key="webpages:Version" value="3.0.0.0" />
<add key="webpages:Enabled" value="false" />
<add key="ClientValidationEnabled" value="true" />
<add key="UnobtrusiveJavaScriptEnabled" value="true" />
<add key="ida:Tenant" value="xxxx.onmicrosoft.com" />
<add key="ida:ClientId" value="Myguid" />
<add key="ida:AadInstance" value="https://login.microsoftonline.com/{0}{1}{2}" />
<add key="ida:RedirectUri" value="https://localhost:44316/" />
<add key="ida:SignUpPolicyId" value="B2C_1_JHA.SignUp" />
<add key="ida:SignInPolicyId" value="B2C_1_JHA.SignIn" />
<add key="ida:UserProfilePolicyId" value="B2C_1_JHA.Profile" />
</appSettings>
<location path="account/signin">
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
<system.web>
<authorization>
<deny users="?" />
</authorization>
<compilation debug="true" targetFramework="4.5" />
<httpRuntime targetFramework="4.5" />
</system.web>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Web.Optimization" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="1.1.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="0.0.0.0-1.6.5135.21930" newVersion="1.6.5135.21930" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.IdentityModel.Tokens.Jwt" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-4.0.20622.1351" newVersion="4.0.20622.1351" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.IdentityModel.Protocol.Extensions" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-1.0.2.33" newVersion="1.0.2.33" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-7.0.0.0" newVersion="7.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Antlr3.Runtime" publicKeyToken="eb42632606e9261f" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-3.5.0.2" newVersion="3.5.0.2" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin.Security" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin.Security.Cookies" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
</configuration>
最佳答案
此问题的原因:
对于DotNet的OpenIDConnect，身份验证和重定向是同时完成的。在您的情况下，身份验证总是比重定向慢。并且，您的应用中的重定向 URI 是“https://localhost:44316/ ”，这需要再次进行身份验证，因为 Request.IsAuthenticated 尚未设置为 true。新的认证将覆盖旧的认证；因此它只是不断地循环。
解决办法很简单。将重定向 URI 更改为不需要身份验证的页面。例如:
<configuration>
<appSettings>
<add key="webpages:Version" value="3.0.0.0" />
<add key="webpages:Enabled" value="false" />
<add key="ClientValidationEnabled" value="true" />
<add key="UnobtrusiveJavaScriptEnabled" value="true" />
<add key="ida:Tenant" value="xxxx.onmicrosoft.com" />
<add key="ida:ClientId" value="Myguid" />
<add key="ida:AadInstance" value="https://login.microsoftonline.com/{0}{1}{2}" />
<add key="ida:RedirectUri" value="https://localhost:44316/Home/loginsuccess" />
<add key="ida:SignUpPolicyId" value="B2C_1_JHA.SignUp" />
<add key="ida:SignInPolicyId" value="B2C_1_JHA.SignIn" />
<add key="ida:UserProfilePolicyId" value="B2C_1_JHA.Profile" />
</appSettings>
<location path="account/signin">
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
<location path="Home/loginsuccess">
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</location>
<system.web>
<authorization>
<deny users="?" />
</authorization>
<compilation debug="true" targetFramework="4.5" />
<httpRuntime targetFramework="4.5" />
</system.web>
...
注意:这里，https://localhost:44316/Home/loginsuccess 应该是一个向用户显示身份验证状态的页面。顺便说一句，您应该将此重定向 URI 添加到新门户中的 AD 应用程序。
关于c# - Azure B2C 拒绝 asp.net MVC 中的 ="?"，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36263926/