身份验证过滤器:如何使用消息执行HTTP 401

Question

我按照http://bitoftech.net/2014/12/15/secure-asp-net-web-api-using-api-key-authentication-hmac-authentication/进行自定义身份验证过滤器.

一切正常,但我不能让服务器在401上说什么.它正确地给出了www-authenicate标题和状态代码401但没有内容/正文.

我尝试使用AuthenticationFailureResult了从http://www.asp.net/web-api/overview/security/authentication-filters但没有帮助.我把我转换AuthenticateAsync成async并忽略了await警告.

这是我目前的工作,评论中的代码是我 - 我希望 - 我可以做的,这主要是它使用任何格式化程序

//request.CreateResponse(HttpStatusCode.Unauthorized, new { Error = true, Message = "Token is invalid" });
HttpContext.Current.Response.ContentType = "application/json";
HttpContext.Current.Response.Write("{ \"Error\" = true, \"Message\" = \"Token is invalid\" }");
context.ErrorResult = new UnauthorizedResult(new AuthenticationHeaderValue[0], request);

Answer 1

有两个选项可以做到这一点:快速但粗暴,更长,但更优雅

A.直接修改HttpResponse:

HttpContext.Current.Response.StatusCode = 401;
HttpContext.Current.Response.Write("some content");

B. 在该类中实现IHttpActionResult并设置a的Content属性HttpResponseMessage:

public class AuthenticationFailureResult : IHttpActionResult
{
    public AuthenticationFailureResult(object jsonContent, HttpRequestMessage request)
    {
        JsonContent = jsonContent;
        Request = request;
    }

    public HttpRequestMessage Request { get; private set; }

    public Object JsonContent { get; private set; }

    public Task<HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken)
    {
        return Task.FromResult(Execute());
    }

    private HttpResponseMessage Execute()
    {
        HttpResponseMessage response = new HttpResponseMessage(HttpStatusCode.Unauthorized);
        response.RequestMessage = Request;
        response.Content = new ObjectContent(JsonContent.GetType(), JsonContent, new JsonMediaTypeFormatter());
        return response;
    }
}

然后你就可以像这样使用它:

context.ErrorResult = new AuthenticationFailureResult(new { Error = true, Message = "Token is invalid" }, request);

注意:如果要使用匿名类型,请JsonContent确保AuthenticationFailureResult在同一个库中实现.