Windows身份验证Asp.net核心2数据库角色授权

Question

我正在使用Asp.Net Core 2.1和Windows身份验证的Intranet应用程序上工作。我可以很好地从IIS获得通过，但我想使用存储在数据库中的角色进行授权。

我有一个IClaimsTransformeration类，该类基于LAN Id从数据库中获取角色，并将它们添加到带有角色密钥的声明列表中。

public class MyClaimsTransformer : IClaimsTransformation
{
    private readonly IUnitOfWorkMtuSecurity _unitOfWork;

    public MyClaimsTransformer(IUnitOfWorkMtuSecurity unitOfWork)
    {
        _unitOfWork = unitOfWork;
    }

    // Each time HttpContext.AuthenticateAsync() or HttpContext.SignInAsync(...) is called the claims transformer is invoked. So this might be invoked multiple times. 
    public async Task<ClaimsPrincipal> TransformAsync(ClaimsPrincipal principal)
    {
        var identity = principal.Identities.FirstOrDefault(x => x.IsAuthenticated);
        if (identity == null) return principal;

        //var user = await _userManager.GetUserAsync(principal);
        var user = identity.Name;
        if (user == null) return principal;

        //Get user with roles from repository.
        var dbUser = _unitOfWork.UserInformations.GetUserWithRoles(user);

        // Inject DbRoles into Claims list
        foreach (var role in dbUser.UserInformationUserRoles.Select((r=>r.UserRole)))
        {
            var claim = new Claim(ClaimTypes.Role, role.Name);
            identity.AddClaim(claim);
        }

        return new ClaimsPrincipal(identity);
    }  
}

我在startup.cs中将IClaimsTransformation添加到了我的服务中

services.AddScoped<IClaimsTransformation, MyClaimsTransformer>();

然后我将属性添加到我的控制器

[Authorize(Roles = "Administrator")]

当我运行我的应用程序时，出现以下错误：

处理请求时发生未处理的异常。InvalidOperationException：未指定authenticationScheme，也未找到DefaultForbidScheme。Microsoft.AspNetCore.Authentication.AuthenticationService.ForbidAsync（HttpContext上下文，字符串方案，AuthenticationProperties属性）

在startup.cs中，我将以下内容添加到服务中

services.AddAuthentication(IISDefaults.AuthenticationScheme);

这摆脱了错误，但是无论我得到什么403错误。

您无权查看此页面。HTTP错误403

当我查看MyClaimsTransformer的返回值时，可以看到管理员的角色已添加到索赔列表中，但是无论如何我都会收到403错误。

有人对我的失踪有任何建议吗？

如果我在视图中使用以下语法，那么它将在视图级别起作用：

 @if (User.HasClaim("http://schemas.microsoft.com/ws/2008/06/identity/claims/role", "Administrator"))
                    {
                <li><a asp-area="" asp-controller="UserInformationAdmin" asp-action="Index">Admin</a></li>
                     } 

我必须指定整个架构网址。

Answer 1

ClaimIdentity的RoleClaimType为“ http://schemas.microsoft.com/ws/2008/06/identity/claims/groupsid ”

并且它必须是“ http://schemas.microsoft.com/ws/2008/06/identity/claims/role ” 的RoleClaimType

由于这是一个只读属性，因此我更改了TransformAsync方法以创建新的ClaimsPrincipal，而不是尝试将数据库角色添加到现有声明中。我的应用程序不需要任何AD组，因此仅使用Windows进行身份验证。下面的代码似乎有效。

public class MyClaimsTransformer : IClaimsTransformation
{
    private readonly IUnitOfWorkSecurity _unitOfWork;

    public MyClaimsTransformer(IUnitOfWorkSecurity unitOfWork)
    {
        _unitOfWork = unitOfWork;
    }

    // Each time HttpContext.AuthenticateAsync() or HttpContext.SignInAsync(...) is called the claims transformer is invoked. So this might be invoked multiple times. 
    public async Task<ClaimsPrincipal> TransformAsync(ClaimsPrincipal principal)
    {
        var identity = principal.Identities.FirstOrDefault(x => x.IsAuthenticated);
        if (identity == null) return principal;

        var user = identity.Name;
        if (user == null) return principal;

        //Get user with roles from repository.
        var dbUser = _unitOfWork.UserInformations.GetUserWithRoles(user);

        var claims = new List<Claim>();

        //The claim identity uses a claim with the claim type below to determine the name property.
        claims.Add(new Claim(@"http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name", user, "Name"));

        //todo: We should probably create a cache for this
        // Get User Roles from database and add to list of claims.
        foreach (var role in dbUser.UserInformationUserRoles.Select((r=>r.UserRole)))
        {
            claims.Add(new Claim(ClaimTypes.Role, role.Name));
        }

        var newClaimsIdentity = new ClaimsIdentity(claims,"Kerberos","", "http://schemas.microsoft.com/ws/2008/06/identity/claims/role");

        var newClaimsPrincipal = new ClaimsPrincipal(newClaimsIdentity);

        return new ClaimsPrincipal(newClaimsPrincipal);
    }  
}