自托管南希：在 Nancy.Authentication.Forms.dll 输入正确的 user/password 时发生 NullReferenceException

Question

我正在尝试创建一个自我托管的表单验证 Nancy.To 简单来说，没有用于用户数据的数据库，它存储在 List.We 有两个用户：

U: admin P: passowrd

U:用户 P:密码

我正在使用：

Nancy.1.4.4
Nancy.Authentication.Forms.1.4.1
Nancy.Hosting.Self.1.4.1
Nancy.Viewengines.Razor.1.4.3
Microsoft.AspNet.Razor.2.0.30506.0

我的登录模块：

Get["/login"] = x =>
            {
                Model.login = new LoginModel() { Error = this.Request.Query.error.HasValue, ReturnUrl = this.Request.Url };
                return View["login", Model];
            };

            Post["/login"] = x =>
            {
                var userGuid = MyUserMapper.ValidateUser((string) this.Request.Form.Username,
                    (string) this.Request.Form.Password);

                if (userGuid == null)
                {
                    return Context.GetRedirect("~/login?error=true&username=" +
                                               (string) this.Request.Form.Username);
                }

                DateTime? expiry = null;
                if (this.Request.Form.RememberMe.HasValue)
                {
                    expiry = DateTime.Now.AddDays(7);
                }


                return this.LoginAndRedirect(userGuid.Value, expiry);

当输入错误的 user/password 时，一切正常 ok.When 输入正确的 user/password NullReferenceException 发生在 LoginAndRedirect:

return this.LoginAndRedirect(userGuid.Value, expiry);


An exception of type 'System.NullReferenceException' occurred in Nancy.Authentication.Forms.dll but was not handled in user code

调用堆栈：

>   NancyLinuxTest.exe!NancyLinuxTest.Models.MainModule..ctor.AnonymousMethod__16(dynamic x) Line 49    C#

堆栈跟踪：

Nancy.Authentication.Forms.FormsAuthentication.EncryptAndSignCookie(String cookieValue, FormsAuthenticationConfiguration configuration)\r\n   at Nancy.Authentication.Forms.FormsAuthentication.BuildCookie(Guid userIdentifier, Nullable`1 cookieExpiry, FormsAuthenticationConfiguration configuration)\r\n   at Nancy.Authentication.Forms.FormsAuthentication.UserLoggedInRedirectResponse(NancyContext context, Guid userIdentifier, Nullable`1 cookieExpiry, String fallbackRedirectUrl)\r\n   at Nancy.Authentication.Forms.ModuleExtensions.LoginAndRedirect(INancyModule module, Guid userIdentifier, Nullable`1 cookieExpiry, String fallbackRedirectUrl)\r\n   at NancyLinuxTest.Models.MainModule.<.ctor>b__16(Object x) in d:\prototype-prices\for_delete\#proto\NancyFormAuthTest\NancyFormAuthTest\Modules\MainModule.cs:line 55\r\n   at CallSite.Target(Closure , CallSite , Func`2 , Object )\r\n   at Nancy.Routing.Route.<>c__DisplayClass4.<Wrap>b__3(Object parameters, CancellationToken context)

userGuid.Value 不为空。

Full source here

Answer 1

private static string EncryptAndSignCookie(string cookieValue, FormsAuthenticationConfiguration configuration)
{
    var encryptedCookie = configuration.CryptographyConfiguration.EncryptionProvider.Encrypt(cookieValue);
    var hmacBytes = GenerateHmac(encryptedCookie, configuration);
    var hmacString = Convert.ToBase64String(hmacBytes);

    return String.Format("{1}{0}", encryptedCookie, hmacString);
}

唯一可以触发 NRE 的行（在 v.1.4.1) is the configuration deference. If you look in the code this is set by calling Enable 中。从那里开始调查，查看何时调用 Enable，检查传入的配置。

免责声明：我不知道南希是什么，也不关心。这是基本的代码调试 you 应该做的。都是开源的。只需逐步完成即可。

Answer 2

发现我的问题，我调用了错误的 Bootstrapper :)。

自托管南希：在 Nancy.Authentication.Forms.dll 输入正确的 user/password 时发生 NullReferenceException

Selfhosted Nancy: NullReferenceException occurred in Nancy.Authentication.Forms.dll When correct user/password is entered

c#

nancy