在使用Identity Server作Identity Provider的时候,我们在NetCore的ConfigureServices((IServiceCollection services))方法中,常需要指定options的Authority,如下代码所示:- public void ConfigureServices(IServiceCollection services)
- {
- services.AddControllersWithViews();
-
- //
- #region MVC client
- //关闭了 JWT 身份信息类型映射
- //这样就允许 well-known 身份信息(比如,“sub” 和 “idp”)无干扰地流过。
- //这个身份信息类型映射的“清理”必须在调用 AddAuthentication()之前完成
- JwtSecurityTokenHandler.DefaultInboundClaimTypeMap.Clear();
- services.AddAuthentication(options =>
- {
- options.DefaultScheme = "Cookies";
- options.DefaultChallengeScheme = "oidc";
- })
- .AddCookie("Cookies")
- .AddOpenIdConnect("oidc", options =>
- {
-
- options.Authority = "http://localhost:5001";
- options.RequireHttpsMetadata = false;
- options.ClientId = "code_client";
- //Client secret
- options.ClientSecret = "511536EF-F270-4058-80CA-1C89C192F69A".ToString();
- //code方式
- options.ResponseType = "code";
- //Scope可以理解为申请何种操作范围
- options.Scope.Add("code_scope1"); //添加授权资源
-
- options.SaveTokens = true;
- options.GetClaimsFromUserInfoEndpoint = true;
-
- });
- #endregion
- services.ConfigureNonBreakingSameSiteCookies();
- }
复制代码 其中options.Authority = "http://localhost:5001"需要设置,如果把它注释掉,则会报如下的错误,从这个异常看得出来,应该是Authority没有设置:
那么为什么我们一定要设置.Authority 呢?我们一步一步来看看:
1.在调用services.AddOpenIdConnect方法时,实质调用的是OpenIdConnectExtensions静态类的AddOpenIdConnect静态方法,如下所示:- public static AuthenticationBuilder AddOpenIdConnect(this AuthenticationBuilder builder, string authenticationScheme, string? displayName, Action<OpenIdConnectOptions> configureOptions)
- {
- builder.Services.TryAddEnumerable(ServiceDescriptor.Singleton<IPostConfigureOptions<OpenIdConnectOptions>, OpenIdConnectPostConfigureOptions>());
- return builder.AddRemoteScheme<OpenIdConnectOptions, OpenIdConnectHandler>(authenticationScheme, displayName, configureOptions);
- }
复制代码 2.从上面的代码看得出,实际上调用的是AuthenticationBuilder的AddRemoteScheme扩展方法,如下所示:- /// <summary>
- /// Adds a <see cref="AuthenticationScheme"/> which can be used by <see cref="IAuthenticationService"/>.
- /// </summary>
- /// <typeparam name="TOptions">The <see cref="AuthenticationSchemeOptions"/> type to configure the handler."/>.</typeparam>
- /// <typeparam name="THandler">The <see cref="AuthenticationHandler{TOptions}"/> used to handle this scheme.</typeparam>
- /// <param name="authenticationScheme">The name of this scheme.</param>
- /// <param name="displayName">The display name of this scheme.</param>
- /// <param name="configureOptions">Used to configure the scheme options.</param>
- /// <returns>The builder.</returns>
- public virtual AuthenticationBuilder AddScheme<TOptions, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)]THandler>(string authenticationScheme, string? displayName, Action<TOptions>? configureOptions)
- where TOptions : AuthenticationSchemeOptions, new()
- where THandler : AuthenticationHandler<TOptions>
- => AddSchemeHelper<TOptions, THandler>(authenticationScheme, displayName, configureOptions);<br> <br><br>
复制代码- private AuthenticationBuilder AddSchemeHelper<TOptions, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)]THandler>(string authenticationScheme, string? displayName, Action<TOptions>? configureOptions)
- where TOptions : AuthenticationSchemeOptions, new()
- where THandler : class, IAuthenticationHandler
- {
- Services.Configure<AuthenticationOptions>(o =>
- {
- //注册Scheme对应的HandlerType
- o.AddScheme(authenticationScheme, scheme => {
- scheme.HandlerType = typeof(THandler);
- scheme.DisplayName = displayName;
- });
- });
- if (configureOptions != null)
- {
- Services.Configure(authenticationScheme, configureOptions);
- }
- //Options验证
- Services.AddOptions<TOptions>(authenticationScheme).Validate(o => {
- o.Validate(authenticationScheme);
- return true;
- });
- Services.AddTransient<THandler>();
- return this;
- }
复制代码
看得出来,实际上调用的是AddSchemeHelper方法,在这个方法里,有一个很重要的Options验证:- Services.AddOptions<TOptions>(authenticationScheme).Validate(o => {
- o.Validate(authenticationScheme);
- return true;
- });<br><br>在这里需要对AuthenticationSchemeOptions进行验证<br><br>
复制代码 3.上一步的Options验证中实际上调用的是OpenIdConnectOptions类的Validate方法,如下所示:- /// <summary>
- /// Check that the options are valid. Should throw an exception if things are not ok.
- /// </summary>
- public override void Validate()
- {
- base.Validate();
- if (MaxAge.HasValue && MaxAge.Value < TimeSpan.Zero)
- {
- throw new ArgumentOutOfRangeException(nameof(MaxAge), MaxAge.Value, "The value must not be a negative TimeSpan.");
- }
- if (string.IsNullOrEmpty(ClientId))
- {
- throw new ArgumentException("Options.ClientId must be provided", nameof(ClientId));
- }
- if (!CallbackPath.HasValue)
- {
- throw new ArgumentException("Options.CallbackPath must be provided.", nameof(CallbackPath));
- }
- //如果Authority没有设置,则报下面这个异常
- if (ConfigurationManager == null)
- {
- throw new InvalidOperationException($"Provide {nameof(Authority)}, {nameof(MetadataAddress)}, "
- + $"{nameof(Configuration)}, or {nameof(ConfigurationManager)} to {nameof(OpenIdConnectOptions)}");
- }
- }
复制代码 从这里看得出来,如果ConfigurationManager为空,则就会报前面中的异常了,所以异常就是这么来的。
4.那么为什么ConfigurationManager为空呢?我们回顾OpenIdConnectExtensions的AddOpenIdConnect方法:- public static AuthenticationBuilder AddOpenIdConnect(this AuthenticationBuilder builder, string authenticationScheme, string? displayName, Action<OpenIdConnectOptions> configureOptions)
- {
- builder.Services.TryAddEnumerable(ServiceDescriptor.Singleton<IPostConfigureOptions<OpenIdConnectOptions>, OpenIdConnectPostConfigureOptions>());
- return builder.AddRemoteScheme<OpenIdConnectOptions, OpenIdConnectHandler>(authenticationScheme, displayName, configureOptions);
- }
复制代码 看得出AuthenticationBuilder的Services添加了一个名为OpenIdConnectPostConfigureOptions的单例服务: builder.Services.TryAddEnumerable(ServiceDescriptor.Singleton());
继续看下OpenIdConnectPostConfigureOptions的源码:- /// <summary>
- /// Invoked to post configure a TOptions instance.
- /// </summary>
- /// <param name="name">The name of the options instance being configured.</param>
- /// <param name="options">The options instance to configure.</param>
- public void PostConfigure(string name, OpenIdConnectOptions options)
- {
- options.DataProtectionProvider = options.DataProtectionProvider ?? _dp;
- if (string.IsNullOrEmpty(options.SignOutScheme))
- {
- options.SignOutScheme = options.SignInScheme;
- }
- if (options.StateDataFormat == null)
- {
- var dataProtector = options.DataProtectionProvider.CreateProtector(
- typeof(OpenIdConnectHandler).FullName!, name, "v1");
- options.StateDataFormat = new PropertiesDataFormat(dataProtector);
- }
- if (options.StringDataFormat == null)
- {
- var dataProtector = options.DataProtectionProvider.CreateProtector(
- typeof(OpenIdConnectHandler).FullName!,
- typeof(string).FullName!,
- name,
- "v1");
- options.StringDataFormat = new SecureDataFormat<string>(new StringSerializer(), dataProtector);
- }
- if (string.IsNullOrEmpty(options.TokenValidationParameters.ValidAudience) && !string.IsNullOrEmpty(options.ClientId))
- {
- options.TokenValidationParameters.ValidAudience = options.ClientId;
- }
- if (options.Backchannel == null)
- {
- options.Backchannel = new HttpClient(options.BackchannelHttpHandler ?? new HttpClientHandler());
- options.Backchannel.DefaultRequestHeaders.UserAgent.ParseAdd("Microsoft ASP.NET Core OpenIdConnect handler");
- options.Backchannel.Timeout = options.BackchannelTimeout;
- options.Backchannel.MaxResponseContentBufferSize = 1024 * 1024 * 10; // 10 MB
- }
- if (options.ConfigurationManager == null)
- {
- if (options.Configuration != null)
- {
- options.ConfigurationManager = new StaticConfigurationManager<OpenIdConnectConfiguration>(options.Configuration);
- }
- else if (!(string.IsNullOrEmpty(options.MetadataAddress) && string.IsNullOrEmpty(options.Authority)))
- {
- if (string.IsNullOrEmpty(options.MetadataAddress) && !string.IsNullOrEmpty(options.Authority))
- {
- options.MetadataAddress = options.Authority;
- if (!options.MetadataAddress.EndsWith("/", StringComparison.Ordinal))
- {
- options.MetadataAddress += "/";
- }
- options.MetadataAddress += ".well-known/openid-configuration";
- }
- if (options.RequireHttpsMetadata && !(options.MetadataAddress?.StartsWith("https://", StringComparison.OrdinalIgnoreCase) ?? false))
- {
- throw new InvalidOperationException("The MetadataAddress or Authority must use HTTPS unless disabled for development by setting RequireHttpsMetadata=false.");
- }
- options.ConfigurationManager = new ConfigurationManager<OpenIdConnectConfiguration>(options.MetadataAddress, new OpenIdConnectConfigurationRetriever(),
- new HttpDocumentRetriever(options.Backchannel) { RequireHttps = options.RequireHttpsMetadata })
- {
- RefreshInterval = options.RefreshInterval,
- AutomaticRefreshInterval = options.AutomaticRefreshInterval,
- };
- }
- }
- }
复制代码
注意看两个标红的if语句,才发现OpenIdConnectOptions的Authority和MetadataAddress在都没有设置的情况下,OpenIdConnectOptions的ConfigurationManager为空!
所以,从上文看得出,如果不设置OpenIdConnectOptions的Authority,那么无法进行OpenIdConnect认证哦!
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