c# - 如何避免 'SamlAssertion.NotOnOrAfter condition is not satisfied' 错误

Question

最近我开始在现有的 Web 应用程序上使用基于声明的身份验证。因为该应用程序使用了 jQuery 以及更值得注意的 AJAX 函数，所以我不得不更改处理程序，使其不再尝试重定向 XmlHTTPRequests，而是返回一个更易于处理的 403 状态。

这是 FederatedAuthentication.WSFederationAuthenticationModule.AuthorizationFailed 事件处理程序:

    protected void WSFederationAuthenticationModule_AuthorizationFailed(object sender, AuthorizationFailedEventArgs e)
    {
        //WSFederationAuthenticationModule sam = (WSFederationAuthenticationModule)sender;

        HttpContext context = HttpContext.Current;
        HttpRequest req = context.Request;
        HttpResponse resp = context.Response;

        if (req == null || resp == null) return;

        if ((resp.StatusCode == 302 || resp.StatusCode == 401) && req.Headers["X-Requested-With"] == "XMLHttpRequest")
        {
            resp.StatusCode = 403;
            e.RedirectToIdentityProvider = false;
        }

    }

我有以下实现 AJAX 调用和处理响应的模式:

$.ajax({
cache: false,
data: $.param(o),
dataType: "xml",
url: "AJAXCall.ashx",
success: function (data)
{
    // Success handler
},
error: function (XMLHttpRequest, textStatus, responseText)
{
    if (XMLHttpRequest.status == 403)
    {
        var retVal = window.showModalDialog("Session.aspx", "", "dialogHeight: 250px; dialogWidth: 250px; edge: Raised; center: Yes; resizable: Yes; status: Yes;");
        if (retVal)
        {
            // Succesful session renewal handler
        }
        else
        {
            // Session renewal failure handler
        }
    }
    else
    {
        // Other errors handler
    }
}
});

如果“Session.aspx”成功重定向到身份提供者并返回，它基本上会关闭模式对话框并返回值为 true。

但我的问题是出现以下错误:

"ID4223: The SamlSecurityToken is rejected because the SamlAssertion.NotOnOrAfter condition is not satisfied."

这是在模拟当前应用程序用户的子系统上调用的，显然前一个 session 的 token 仍然存在。我在应用程序的 web.config 中有以下设置:

<federatedAuthentication>
<wsFederation passiveRedirectEnabled="true" persistentCookiesOnPassiveRedirects="true" issuer="https://adfs.example.com/adfs/ls/" realm="https://www.example.com:449/" requireHttps="true" />
<cookieHandler requireSsl="true" />

如何避免这个错误？任何帮助将不胜感激。

Answer 1

以下 FederatedAuthentication.WSFederationAuthenticationModule.SignInError 事件处理程序方法解决了问题:

    protected void WSFederationAuthenticationModule_SignInError(object sender, ErrorEventArgs e)
    {
        // handle an intermittent error that most often occurs if you are redirected to the STS after a session expired,
        // and the user clicks back on the browser - second error very uncommon but this should fix
        if (e.Exception.Message.StartsWith("ID4148") ||
            e.Exception.Message.StartsWith("ID4243") ||
            e.Exception.Message.StartsWith("ID4223"))
        {
            FederatedAuthentication.SessionAuthenticationModule.DeleteSessionTokenCookie();
            e.Cancel = true;
        }
    }

它将删除持续存在的 session token Cookie，即使在 session 过期后用户已被重定向到 STS 服务。