自定义 ASP.NET Identity 2.0 UserStore - 是否需要实现所有接口？

Question

我为我的应用程序创建了一个自定义IUserStore<TUser,int>。我已经实现了我需要的接口，

   IUserStore<TUser, int>,
   IUserRoleStore<TUser, int>,
   IUserLockoutStore<TUser, int>,
   IUserPasswordStore<TUser, int>

但是当我打电话时

var result = await SignInManager.PasswordSignInAsync(model.UserName, model.Password, model.RememberMe, shouldLockout: false);

我得到一个例外说

Store does not implement IUserTwoFactorStore<TUser>.

我没有在我的应用程序的任何地方使用两因素身份验证。为什么它希望我实现那个接口？是否需要我实现所有这些接口，即使我实际上并没有使用它们？

Answer 1

其实IUserTwoFactorStore接口真的很简单，目前我的实现（我也不使用二元认证）是这样的：

 ....
 public Task<bool> GetTwoFactorEnabledAsync(User user)
 {
     return Task.FromResult(false);
 }

 public Task SetTwoFactorEnabledAsync(User user, bool enabled)
 {
     throw new NotImplementedException();
 }

它可以工作，虽然我几分钟前才这样做，并没有彻底测试整个应用程序。

Answer 2

我遇到了同样的问题。目前，由于 SignInManager.SignInOrTwoFactor 方法盲目地检查 GetTwoFactorAuthentication，当 UserStore 未实现 IUserTwoFactorStore 时，它​​会引发异常。

我相信 Microsoft 的意图是必须在自定义 SignInManager 类中重写 SignInManager PasswordSignInAsync 方法。不幸的是，我找不到任何指向此的文档或示例。

这是我为解决这个问题而实现的 SignInManager 包装类：

public class EnhancedSignInManager<TUser, TKey> : SignInManager<TUser, TKey>
    where TUser : class, IUser<TKey>
    where TKey : IEquatable<TKey>
{
    public EnhancedSignInManager(
        UserManager<TUser, TKey> userManager, 
        IAuthenticationManager authenticationManager)
        : base(userManager, authenticationManager)
    {
    }

    public override async Task SignInAsync(
        TUser user, 
        bool isPersistent, 
        bool rememberBrowser)
    {
        var userIdentity = await CreateUserIdentityAsync(user).WithCurrentCulture();

        // Clear any partial cookies from external or two factor partial sign ins
        AuthenticationManager.SignOut(
            DefaultAuthenticationTypes.ExternalCookie, 
            DefaultAuthenticationTypes.TwoFactorCookie);

        if (rememberBrowser)
        {
            var rememberBrowserIdentity = AuthenticationManager
                .CreateTwoFactorRememberBrowserIdentity(ConvertIdToString(user.Id));

            AuthenticationManager.SignIn(
                new AuthenticationProperties { IsPersistent = isPersistent }, 
                userIdentity, 
                rememberBrowserIdentity);
        }
        else
        {
            AuthenticationManager.SignIn(
                new AuthenticationProperties { IsPersistent = isPersistent }, 
                userIdentity);
        }
    }

    private async Task<SignInStatus> SignInOrTwoFactor(TUser user, bool isPersistent)
    {
        var id = Convert.ToString(user.Id);

        if (UserManager.SupportsUserTwoFactor 
            && await UserManager.GetTwoFactorEnabledAsync(user.Id)
                                .WithCurrentCulture()
            && (await UserManager.GetValidTwoFactorProvidersAsync(user.Id)
                                 .WithCurrentCulture()).Count > 0
                && !await AuthenticationManager.TwoFactorBrowserRememberedAsync(id)
                                               .WithCurrentCulture())
        {
            var identity = new ClaimsIdentity(
                DefaultAuthenticationTypes.TwoFactorCookie);

            identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, id));

            AuthenticationManager.SignIn(identity);

            return SignInStatus.RequiresVerification;
        }
        await SignInAsync(user, isPersistent, false).WithCurrentCulture();
        return SignInStatus.Success;
    }

    public override async Task<SignInStatus> PasswordSignInAsync(
        string userName, 
        string password, 
        bool isPersistent, 
        bool shouldLockout)
    {
        if (UserManager == null)
        {
            return SignInStatus.Failure;
        }

        var user = await UserManager.FindByNameAsync(userName).WithCurrentCulture();
        if (user == null)
        {
            return SignInStatus.Failure;
        }

        if (UserManager.SupportsUserLockout 
            && await UserManager.IsLockedOutAsync(user.Id).WithCurrentCulture())
        {
            return SignInStatus.LockedOut;
        }

        if (UserManager.SupportsUserPassword 
            && await UserManager.CheckPasswordAsync(user, password)
                                .WithCurrentCulture())
        {
            return await SignInOrTwoFactor(user, isPersistent).WithCurrentCulture();
        }
        if (shouldLockout && UserManager.SupportsUserLockout)
        {
            // If lockout is requested, increment access failed count
            // which might lock out the user
            await UserManager.AccessFailedAsync(user.Id).WithCurrentCulture();
            if (await UserManager.IsLockedOutAsync(user.Id).WithCurrentCulture())
            {
                return SignInStatus.LockedOut;
            }
        }
        return SignInStatus.Failure;
    }
}

我希望它有所帮助。干杯

Answer 3

我有同样的问题，我不想实现IUserTwoFactorStore<TUser, TKey> 只是说我没有实现它。但是，如果我最终想要实现它（我预计我会这样做），我也不想回去捣乱。所以我认为未来证明（和可重用）的解决方案是：（受@gjsduarte 的回答启发）

public class SafeUserManager<TUser, TKey> : UserManager<TUser, TKey>
{
    public override Task<bool> GetTwoFactorEnabledAsync(TKey userId)
    {
        return Store is IUserTwoFactorStore<TUser, TKey>
            ? base.GetTwoFactorEnabledAsync(userId)
            : Task.FromResult(false);
    }
}

对其他 Get[feature]EnabledAsync(TKey userId) 方法执行相同操作可能是个好主意。