基于角色的令牌ASP.net标识

Question

我使用标准的ASP.net OWIN OAuth中间件系统来使用承载令牌对本地用户进行身份验证。我想做的是为同一用户帐户分发基于角色的令牌。如。

           OAuth TokenA => General User Privileges 
UserA -> 
           OAuth TokenB => Admin User Privileges 

是否以任何方式支持?

Answer 1

我可以使用以下方法解决这个问题-

//ensure the token is a User role token only
identity.AddClaim(new Claim(ClaimTypes.Role, "User"));

其中'identity'是

的实例

System.Security.Claims.Identity

然后在我的System.Web.Http.AuthorizeAttribute实现中，我可以像这样检查声明-

//get claims of the Role type
var identity = (ClaimsIdentity)actionContext.RequestContext.Principal.Identity;
IEnumerable<Claim> claims = identity.Claims.Where(c => c.Type == ClaimTypes.Role);
//check if any claim for the User role, if so this is a non-privleged token
var nonPrivToken = claims.Any(c => c.Value == "User");

Answer 2

您可以在生成承载令牌之前向用户添加声明。因此，如果您更改了您输入的内容，则可以生成和使用两种不同的承载令牌。

(来自taiseer-joudeh-blog)

 public class SimpleAuthorizationServerProvider : OAuthAuthorizationServerProvider
{
    public override async Task ValidateClientAuthentication(OAuthValidateClientAuthenticationContext context)
    {
        context.Validated();
    }
    public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context)
    {
        context.OwinContext.Response.Headers.Add("Access-Control-Allow-Origin", new[] { "*" });
        using (AuthRepository _repo = new AuthRepository())
        {
            IdentityUser user = await _repo.FindUser(context.UserName, context.Password);
            if (user == null)
            {
                context.SetError("invalid_grant", "The user name or password is incorrect.");
                return;
            }
        }
        var identity = new ClaimsIdentity(context.Options.AuthenticationType);
         // Change the role and create new bearer token
        identity.AddClaim(new Claim("role", "user"));
        context.Validated(identity);


    }
}