問題描述

我有一個 ASP.NET Core 2.0 應用程序設置，我想使用 AzureAd 對我公司的目錄進行身份驗證.我已經設置了類和啟動方法并使身份驗證工作正常，我遇到的問題是我正在嘗試為 OnAuthorizationCodeReceived 事件設置事件處理程序，以便我可以請求一個用戶令牌，然后用于 Microsoft 圖形調用.

I have an ASP.NET Core 2.0 application setup that I want to use AzureAd for the authentication with my company's directory. I have setup the classes and startup method and have the authentication piece working, the problem that I'm having is that I'm trying to setup and event handler to the OnAuthorizationCodeReceived event, so that I can request a user token that will then be used for Microsoft graph calls.

在我的 Startup.cs 中，我有以下代碼

In my Startup.cs I have the following code

public void ConfigureServices(IServiceCollection services)
        {
            services.AddAuthentication(sharedOptions =>
            {
                sharedOptions.DefaultScheme = CookieAuthenticationDefaults.AuthenticationScheme;
                sharedOptions.DefaultChallengeScheme = OpenIdConnectDefaults.AuthenticationScheme;
                sharedOptions.DefaultSignInScheme = CookieAuthenticationDefaults.AuthenticationScheme;
            })
            .AddAzureAd(options => Configuration.Bind("AzureAd", options))
            .AddCookie();

            services.AddMvc();

            services.AddSingleton(Configuration);
            services.AddSingleton<IGraphAuthProvider, GraphAuthProvider>();
            services.AddTransient<IGraphSDKHelper, GraphSDKHelper>();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseBrowserLink();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
            }

            app.UseStaticFiles();

            app.UseAuthentication();

            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "default",
                    template: "{controller=Home}/{action=Index}/{id?}");
            });
        }

然后在 AzureAdAuthenticationBuilderExtensions.cs 我有以下代碼.

Then in the AzureAdAuthenticationBuilderExtensions.cs I have the following code.

public static class AzureAdAuthenticationBuilderExtensions
{        
    public static AuthenticationBuilder AddAzureAd(this AuthenticationBuilder builder, IConfiguration configuration)
        => builder.AddAzureAd(_ => { }, configuration);

    public static AuthenticationBuilder AddAzureAd(this AuthenticationBuilder builder, Action<AzureAdOptions> configureOptions, 
        IConfiguration configuration)
    {
        builder.Services.Configure(configureOptions);
        builder.Services.AddSingleton<IConfigureOptions<OpenIdConnectOptions>, ConfigureAzureOptions>();
        builder.AddOpenIdConnect(opts =>
        {
            opts.ResponseType = "code id_token";

            opts.ClientId = configuration["AzureAd:ClientId"];
            opts.Authority = $"{configuration["AzureAd:Instance"]}{configuration["AzureAd:TenantId"]}";
            opts.UseTokenLifetime = true;
            opts.CallbackPath = configuration["AzureAd:CallbackPath"];
            opts.ClientSecret = configuration["AzureAd:ClientSecret"];
            opts.RequireHttpsMetadata = false;

            opts.Events = new OpenIdConnectEvents
            {
                OnAuthorizationCodeReceived = async context =>
                {
                    var credential = new ClientCredential(context.Options.ClientId, context.Options.ClientSecret);

                    var distributedCache = context.HttpContext.RequestServices.GetRequiredService<IDistributedCache>();
                    var userId = context.Principal
                        .FindFirst("http://schemas.microsoft.com/identity/claims/objectidentifier")
                        .Value;
                    var cache = new AdalDistributedTokenCache(distributedCache, userId);
                    var authContext = new AuthenticationContext(context.Options.Authority, cache);
                    await authContext.AcquireTokenByAuthorizationCodeAsync(context.TokenEndpointRequest.Code,
                        new Uri(context.TokenEndpointRequest.RedirectUri, UriKind.RelativeOrAbsolute), credential, context.Options.Resource);
                    context.HandleCodeRedemption();
                }
            };
        });
        return builder;
    }

    private class ConfigureAzureOptions: IConfigureNamedOptions<OpenIdConnectOptions>
    {
        private readonly AzureAdOptions _azureOptions;

        public ConfigureAzureOptions(IOptions<AzureAdOptions> azureOptions)
        {
            if (azureOptions != null)
            {
                _azureOptions = azureOptions.Value;
            }
        }

        public void Configure(string name, OpenIdConnectOptions options)
        {
            options.ClientId = _azureOptions.ClientId;
            options.Authority = $"{_azureOptions.Instance}{_azureOptions.TenantId}";
            options.UseTokenLifetime = true;
            options.CallbackPath = _azureOptions.CallbackPath;
            options.RequireHttpsMetadata = false;
            options.ClientSecret = _azureOptions.ClientSecret;
        }

        public void Configure(OpenIdConnectOptions options)
        {
            Configure(Options.DefaultName, options);
        }
    }
}

然后調用 AddAzureAd 方法，我可以看到它遍歷該方法中的所有代碼，但是當我在 OnAuthorizationCodeReceived 方法中放置斷點時，斷點永遠不會被命中.我做了一堆閱讀，看起來我所擁有的是正確的，所以我猜我一定在這里遺漏了一些簡單的東西，但找不到問題.

Then AddAzureAd method is being called and I can see it walk through all of the code in this method, but when I put a breakpoint in the OnAuthorizationCodeReceived method that breakpoint never gets hit. I've done a bunch of reading and it looks like what I have is right, so I'm guessing that I must be missing something simple here, but can't find the problem.

已編輯我現在正在點擊 OnAuthorizationCodeReceived 事件，但現在應用程序無法繼續登錄，出現以下錯誤

Editted I'm now hitting the OnAuthorizationCodeReceived event, but now the application is failing to continue to log in getting the following error

SecurityTokenException: Unable to validate the 'id_token', no suitable ISecurityTokenValidator was found for: ''."
Microsoft.AspNetCore.Authentication.RemoteAuthenticationHandler+<HandleRequestAsync>d__12.MoveNext()

Stack Query Cookies Headers
SecurityTokenException: Unable to validate the 'id_token', no suitable ISecurityTokenValidator was found for: ''."
Microsoft.AspNetCore.Authentication.RemoteAuthenticationHandler+<HandleRequestAsync>d__12.MoveNext()
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
System.Runtime.CompilerServices.TaskAwaiter.GetResult()
Microsoft.AspNetCore.Authentication.AuthenticationMiddleware+<Invoke>d__6.MoveNext()
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware+<Invoke>d__7.MoveNext()

推薦答案

Asp.net core 2.0的OpenIdConnect組件使用隱式流(response_type的值為id_token).

The OpenIdConnect component for Asp.net core 2.0 uses implicit flow(the value of response_type is id_token).

要觸發 OnAuthorizationCodeReceived 事件，我們應該使用 'response_type' 參數包含 code 值的混合流.(例如.id_token 代碼).我們需要通過 OpenIdConnectOptions 設置它，如下代碼:

To fire the OnAuthorizationCodeReceived the event, we should use the hybrid flow which's 'response_type' parameter contains code value.(eg. id_token code). And we need set it through the OpenIdConnectOptions like code below:

.AddOpenIdConnect(options =>
{
    options.Authority = String.Format(Configuration["AzureAd:AadInstance"], Configuration["AzureAd:Tenant"]);
    options.ClientId = Configuration["AzureAd:ClientId"];
    options.ResponseType = "code id_token";     
});

options.Events = new OpenIdConnectEvents
{
    OnAuthorizationCodeReceived = async context =>
    {
        var credential = new ClientCredential(context.Options.ClientId, context.Options.ClientSecret);

        var authContext = new AuthenticationContext(context.Options.Authority);
        var authResult=await authContext.AcquireTokenByAuthorizationCodeAsync(context.TokenEndpointRequest.Code,
            new Uri(context.TokenEndpointRequest.RedirectUri, UriKind.RelativeOrAbsolute), credential, context.Options.Resource);
        context.HandleCodeRedemption(authResult.AccessToken, context.ProtocolMessage.IdToken);
    },
};

這篇關于ASP.NET Core 2.0 AzureAD 身份驗證不起作用的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！