1

当我<TargetFramework>net462</TargetFramework>用于我的 Okta SAML 实现时，它会抛出一个无效的 URL，new Saml2AuthnRequest(config);但在我第一次尝试在 netcoreapp3.1 上使用此代码时，它工作得非常好。如果我错过了什么，请告诉我谢谢。

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在此处输入图像描述

[HttpGet, AllowAnonymous]
    public IActionResult Index(string returnUrl = null)
    {
        try
        {
            var config = GetSAMLConfig();
            var binding = new Saml2RedirectBinding();
            binding.SetRelayStateQuery(new Dictionary<string, string> { { relayStateReturnUrl, returnUrl ?? Url.Content("~/") } });
            var request = new Saml2AuthnRequest(config);
            return binding.Bind(request).ToActionResult();
        }
        catch (Exception e)
        {
            Console.WriteLine(e);
            throw;
        }
    }

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   private Saml2Configuration GetSAMLConfig()
    {
        var config = new Saml2Configuration();
        config.AllowedAudienceUris.Add("Okta_SAML_Example");
        config.CertificateValidationMode = X509CertificateValidationMode.ChainTrust;
        config.RevocationMode = X509RevocationMode.NoCheck;

        var entityDescriptor = new EntityDescriptor();
        entityDescriptor.ReadIdPSsoDescriptorFromUrl(new Uri("https://---------.okta.com/app/exk2b0b7dibno7rOB5d6/sso/saml/metadata"));
        if (entityDescriptor.IdPSsoDescriptor != null)
        {
            config.SingleSignOnDestination = entityDescriptor.IdPSsoDescriptor.SingleSignOnServices.First().Location;
            config.SignatureValidationCertificates.AddRange(entityDescriptor.IdPSsoDescriptor.SigningCertificates);
        }
        else
        {
            throw new Exception("IdPSsoDescriptor not loaded from metadata.");
        }

        return config;
    }

实际异常

System.UriFormatException: Invalid URI: The format of the URI could not be determined.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at ITfoxtec.Identity.Saml2.Configuration.Saml2IdentityConfiguration.GetAudienceRestriction(Boolean audienceRestricted, IEnumerable`1 allowedAudienceUris)
   at ITfoxtec.Identity.Saml2.Configuration.Saml2IdentityConfiguration.GetIdentityConfiguration(Saml2Configuration config)
   at ITfoxtec.Identity.Saml2.Saml2Request..ctor(Saml2Configuration config)
   at ITfoxtec.Identity.Saml2.Saml2AuthnRequest..ctor(Saml2Configuration config)
   at SAMLNet461.Controllers.HomeController.Index(String returnUrl) in D:\REPO\PELICAN\LOCAL\SAML.RND - CompanyAcccounts adjustment\SAML.Demo\SAMLNet461\Controllers\HomeController.cs:line 69
   at lambda_method(Closure , Object , Object[] )
   at Microsoft.AspNetCore.Mvc.Internal.ActionMethodExecutor.SyncActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeActionMethodAsync>d__12.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeNextActionFilterAsync>d__10.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeInnerFilterAsync>d__13.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.<InvokeNextResourceFilter>d__23.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.<InvokeFilterPipelineAsync>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.<InvokeAsync>d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Builder.RouterMiddleware.<Invoke>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.<Invoke>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.<Invoke>d__7.MoveNext()
4

2 回答 2

1

代码看起来正确。

可能是 TLS 版本问题。

另一种解决方案是在您的代码中下载元数据并将元数据字符串添加到ITfoxtec Identity SAML 2.0库：

var idPMetadataXml = "... downloaded metadata ...";
var entityDescriptor = new EntityDescriptor();
entityDescriptorReadIdPSsoDescriptor(idPMetadataXml);
...

更新：

错误接缝与观众限制有关：

config.AllowedAudienceUris.Add("Okta_SAML_Example");

受众必须是 .NET Framework 应用程序中的 URI。纯文本字符串仅在 .NET Core 和 .NET 5.0 中受支持。

.NET 框架示例：https ://github.com/ITfoxtec/ITfoxtec.Identity.Saml2/tree/master/test/TestWebApp

于 2020-12-17T09:10:26.050 回答
0

我有同样的问题，它是由“GetAudienceRestriction() 方法”引起的。将发行者名称从“application-name”更改为“https://application-name”有帮助。不要忘记在身份提供者端（Okta、Ping Identity 等）始终更改您的名称。现在不再抛出异常。

于 2021-07-27T07:57:19.440 回答