IdentityServer4环境部署失败分析贴（一）

前言：

在部署Idv4站点和其客户端在外网时，发现了许多问题，折腾了许久，翻看了许多代码，写个MD记录一下。

1.受保护站点提示错误： Unable to obtain configuration from: '[PII is hidden]'.

fail: Microsoft.AspNetCore.Server.Kestrel[13]Connection id "0HLL3MB34N0G5", Request id "0HLL3MB34N0G5:00000009": An unhandled exception was thrown by the application.
System.InvalidOperationException: IDX20803: Unable to obtain configuration from: '[PII is hidden]'.在 Microsoft.IdentityModel.Protocols.ConfigurationManager`1.<GetConfigurationAsync>d__24.MoveNext()
--- 引发异常的上一位置中堆栈跟踪的末尾 ---在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()在 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)在 Microsoft.AspNetCore.Authentication.OpenIdConnect.OpenIdConnectHandler.<HandleChallengeAsync>d__18.MoveNext()
--- 引发异常的上一位置中堆栈跟踪的末尾 ---在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()在 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)在 Microsoft.AspNetCore.Authentication.AuthenticationHandler`1.<ChallengeAsync>d__54.MoveNext()
--- 引发异常的上一位置中堆栈跟踪的末尾 ---

1.1 受保护站点的代码执行流程

graph TB
User--1.进入-->A(Home/Index)
A--2.Authorize-->AA{是否授权}
AA--YES-->完事
AA--NO-->B(返回ChallengeResult)
B--3.ExecuteResult-->C(进入AuthenticationMiddleware中间件)
C--4.根据authenticationScheme找到相应Handler-->D(OpenIDConenctHandler)
D--5.调用HandleChallengeAsync-->F(调用OpenIdConnectConfigurationRetriever.IConfigurationRetriever)
F--6.通过HTTP调用Idv4站点的/.well-known/openid-configuration-->F1(Idv4Config)
F1--7.通过上步骤取到的config.jwks_uri获取加密key信息-->F2(获得公钥私钥等信息)
F2--8.设置JsonWebKeySet-->F3(完成openIdConnectConfiguration.SigningKeysKeys的添加)
F3-->F4(完成)

1.1 受保护站点的部分源码

Idv4部分源码

//注入Idev相关，配置authenticationScheme为oidc
public static IIdentityServerBuilder AddIdentityServer(this IServiceCollection services, Action<IdentityServerOptions> setupAction)
{services.Configure(setupAction);return services.AddIdentityServer();
}

PS: 这里要额外提一下，在Abp的模板项目中，如下配置使用Idv4可能无法正常跳转IDV4授权站完成单点登录

services.AddOpenIdConnect("oidc", options =>
{...
}

需要额外添加下面这段，原因是Abp引入Microsoft.Identity,会重复设置schme导致错误，需如下代码添加设置。

services.AddAuthentication(options =>
{options.DefaultAuthenticateScheme = "oidc";options.DefaultChallengeScheme = "oidc";options.DefaultSignOutScheme = "oidc";
})

步骤5部分源码

 protected override async Task HandleChallengeAsync(AuthenticationProperties properties){Logger.EnteringOpenIdAuthenticationHandlerHandleUnauthorizedAsync(GetType().FullName);// order for local RedirectUri// 1. challenge.Properties.RedirectUri// 2. CurrentUri if RedirectUri is not set)if (string.IsNullOrEmpty(properties.RedirectUri)){properties.RedirectUri = CurrentUri;}Logger.PostAuthenticationLocalRedirect(properties.RedirectUri);if (_configuration == null && Options.ConfigurationManager != null){//问题在这里_configuration = await Options.ConfigurationManager.GetConfigurationAsync(Context.RequestAborted);}...

步骤6部分源码

 public static async Task<OpenIdConnectConfiguration> GetAsync(string address, IDocumentRetriever retriever, CancellationToken cancel){if (string.IsNullOrWhiteSpace(address))throw LogHelper.LogArgumentNullException(nameof(address));if (retriever == null){throw LogHelper.LogArgumentNullException(nameof(retriever));}//当站点没启动的时候，这里可能出现问题string doc = await retriever.GetDocumentAsync(address, cancel).ConfigureAwait(false);LogHelper.LogVerbose(LogMessages.IDX21811, doc);OpenIdConnectConfiguration openIdConnectConfiguration = JsonConvert.DeserializeObject<OpenIdConnectConfiguration>(doc);if (!string.IsNullOrEmpty(openIdConnectConfiguration.JwksUri)){LogHelper.LogVerbose(LogMessages.IDX21812, openIdConnectConfiguration.JwksUri);//当证书配置或读取错误的时候，这里会出现问题string keys = await retriever.GetDocumentAsync(openIdConnectConfiguration.JwksUri, cancel).ConfigureAwait(false);LogHelper.LogVerbose(LogMessages.IDX21813, openIdConnectConfiguration.JwksUri);openIdConnectConfiguration.JsonWebKeySet = JsonConvert.DeserializeObject<JsonWebKeySet>(keys);foreach (SecurityKey key in openIdConnectConfiguration.JsonWebKeySet.GetSigningKeys()){openIdConnectConfiguration.SigningKeys.Add(key);}}return openIdConnectConfiguration;}

通过流程进行问题解析：

通过查看日志可发现在流程5后开始报错

步骤一

访问：http://{ssoHost}/.well-known/openid-configuration

如果访问成功，则排除单点登录站点部署失败问题，前往步骤二

如果访问失败，则去解决单点登录站点部署问题。

步骤二

http://{ssoHost}/.well-known/openid-configuration/jwks

如果访问成功，则重启客户端

如果访问失败，那么有意思了...继续往下看

###### 此时单点登录站点的日志

[10:25:24 Error] Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware
An unhandled exception has occurred while executing the request.
Internal.Cryptography.CryptoThrowHelper+WindowsCryptographicException: 出现了内部错误。at Internal.Cryptography.Helpers.OpenStorageProvider(CngProvider provider)at System.Security.Cryptography.CngKey.Import(Byte[] keyBlob, String curveName, CngKeyBlobFormat format, CngProvider provider)at System.Security.Cryptography.CngKey.Import(Byte[] keyBlob, CngKeyBlobFormat format)at Internal.Cryptography.Pal.X509Pal.DecodePublicKey(Oid oid, Byte[] encodedKeyValue, Byte[] encodedParameters, ICertificatePal certificatePal)at System.Security.Cryptography.X509Certificates.PublicKey.get_Key()at Microsoft.IdentityModel.Tokens.X509SecurityKey.get_PublicKey()at IdentityServer4.ResponseHandling.DiscoveryResponseGenerator.CreateJwkDocumentAsync()at IdentityServer4.Endpoints.DiscoveryKeyEndpoint.ProcessAsync(HttpContext context)at IdentityServer4.Hosting.IdentityServerMiddleware.Invoke(HttpContext context, IEndpointRouter router, IUserSession session, IEventService events)at IdentityServer4.Hosting.IdentityServerMiddleware.Invoke(HttpContext context, IEndpointRouter router, IUserSession session, IEventService events)at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)at IdentityServer4.Hosting.BaseUrlMiddleware.Invoke(HttpContext context)at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.Invoke(HttpContext context)

##### 单点登录站点在此时的工作流程

graph TBA(通过Http获取发现服务的配置信息)--1.进入SSO站点-->B(IdentityServerMiddleware)
B--2.调用Process-->C(进入DiscoveryKeyEndpoint)
C--3.遍历注入的加密Key-->D(返回JsonBWebKey)

部分源码解析：

   public async Task Invoke(HttpContext context, IEndpointRouter router, IUserSession session, IEventService events){// this will check the authentication session and from it emit the check session// cookie needed from JS-based signout clients.await session.EnsureSessionIdCookieAsync();try{//根据请求路径，进入相应endpoint处理器var endpoint = router.Find(context);if (endpoint != null){_logger.LogInformation("Invoking IdentityServer endpoint: {endpointType} for {url}", endpoint.GetType().FullName, context.Request.Path.ToString());var result = await endpoint.ProcessAsync(context);...

  //创建JwtDocumentpublic virtual async Task<IEnumerable<Models.JsonWebKey>> CreateJwkDocumentAsync(){var webKeys = new List<Models.JsonWebKey>();var signingCredentials = await Keys.GetSigningCredentialsAsync();var algorithm = signingCredentials?.Algorithm ?? Constants.SigningAlgorithms.RSA_SHA_256;foreach (var key in await Keys.GetValidationKeysAsync()){if (key is X509SecurityKey x509Key){var cert64 = Convert.ToBase64String(x509Key.Certificate.RawData);var thumbprint = Base64Url.Encode(x509Key.Certificate.GetCertHash());//当证书读取不正常的时候，PublicKey的属性构造器中会报错。var pubKey = x509Key.PublicKey as RSA;var parameters = pubKey.ExportParameters(false);var exponent = Base64Url.Encode(parameters.Exponent);var modulus = Base64Url.Encode(parameters.Modulus);var webKey = new Models.JsonWebKey{kty = "RSA",use = "sig",kid = x509Key.KeyId,x5t = thumbprint,e = exponent,n = modulus,x5c = new[] { cert64 },alg = algorithm};webKeys.Add(webKey);continue;}

问题解析

通过日志可发现，问题出现在PublicKey的获取上，即证书的读取失败了。

解决方案！

终于到解决问题的时候了...

步骤一：

检查证书是否是临时证书

//在正式环境中，这可能会报错
builder.AddDeveloperSigningCredential(true, "tempkey.rsa");//正确方式
builder.AddSigningCredential(new X509Certificate2(path,Configuration["Certificates:Password"]))
这里可以参见郭的随笔：
https://www.cnblogs.com/guolianyu/p/9872661.html

步骤二：

如果已经添加了证书，且证书路径正确读取，且证书密码正确；

但是！在Windows Server2008服务器上部署仍失败时，请检查 CNG Key Isolation 服务是否启动！

如果该服务未启动，则启动后即可！

如果该服务已启动，则尴尬的很...如果您仍排除不了问题，可以评论告诉我

转载于:https://www.cnblogs.com/Imaigne/p/10519493.html