问题描述

我的主要目标是使用 Windows 身份验证来查询我的自定义用户表以通过 Web 应用程序使用.我不确定是否有传统的方法来做到这一点.

My main goal is using the Windows Authentication to query my custom Users table to use through the web application. I am not sure there is a conventional way of doing this.

我在 SQL 数据库中有一个预定义的用户表和角色表.如何使用 User.Identity.Name 查询此 Users 表并将所有表数据与角色一起映射到 ApplicationUser 类，以后可以进一步使用Intranet Web 应用程序?

I have a predefined Users table and Roles table in a SQL database. How do I use the User.Identity.Name to query this Users table and map all the tables data along with the roles to a ApplicationUser class that can be further used later in the intranet web application?

通过阅读大量文章，我无法找到与我所追求的密切相关的任何内容.我假设这将在 ConfigureServices 下的 Startup 类中完成，但我也不确定.我需要在用户第一次导航到该网站时对其进行查找.

I was unable to find anything closely related to what I am after from reading tons of articles. I assume this will be done in the Startup class under ConfigureServices but am also unsure of that. I need the user to be looked up whenever they navigate to the site for the first time.

推荐答案

我会使用 ClaimsTransformer 来获取用户声明.我将尝试展示如何获取用户声明并处理 Windows Authenticatin 的授权.

I would go with ClaimsTransformer to get user claims. I just will try to show how to get user claims and to handle authorization for Windows Authenticatin.

首先创建一个ClaimsTransformer类:

public class ClaimsTransformer : IClaimsTransformer
{
    // i assume you have a user service in which you get user info via entity framework
    private readonly IUserService _userService;   
    public ClaimsTransformer(IUserService userService)
    {
         _userService = userService;
    }
    public async Task<ClaimsPrincipal> TransformAsync(ClaimsTransformationContext context)
    {
        var identity = ((ClaimsIdentity)context.Principal.Identity);
        // ... add user claims if required
        var roles = _userService.GetRoles(identity.Name);
        foreach(var role in roles)
        {
            identity.AddClaim(new Claim(ClaimTypes.Role, role));
        }
        return await Task.FromResult(context.Principal);
    }
}

然后在Configure方法中使用

    public void Configure(IApplicationBuilder app)
    {
        //...
        app.UseClaimsTransformation(async (context) =>
        {
            IClaimsTransformer transformer = context.Context.RequestServices.GetRequiredService<IClaimsTransformer>();
            return await transformer.TransformAsync(context);
        });
        //...
    }

不幸的是，User.IsInRole 方法不适用于 ClaimsTransformer(如果您使用 ClaimsTransformer 添加角色，IsInRole 将为 false)所以您不能将 [Authorize(Roles = "")] 与 ClaimsTransformer 一起使用.在这种情况下，您可以使用 基于声明的授权 来处理授权.

Unfortunately User.IsInRole method doesn't work with ClaimsTransformer(if you add role with ClaimsTransformer, IsInRole will be false) so you can't use [Authorize(Roles = "")] with ClaimsTransformer. In this case you can use Claims Based Authorization to handle authotorization.

所以最后将以下代码添加到 ConfigureServices 并使用 Authorize 属性:

So finally add below code to ConfigureServices and use Authorize attribute:

    public void ConfigureServices(IServiceCollection services)
    {
        // Add framework services.
        services.AddSingleton<IClaimsTransformer, ClaimsTransformer>();
        services.AddAuthorization(options =>
        {
            options.AddPolicy("RequireAdministratorRole", policy => policy.RequireClaim(ClaimTypes.Role, "Administrator"));
        });
        //...
    }

    [Authorize(Policy = "RequireAdministratorRole")]
    public IActionResult Index() { }

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