设置HttpContext.Current.User

Question

我正在开发一个asp.net mvc 3.0应用程序,它具有简单的身份验证过程.用户填写一个通过ajax调用发送到服务器并获得响应的表单,但问题是使用以下方法:

FormsAuthentication.SetAuthCookie(person.LoginName,false);

是不足以填充'HttpContext.Current.User',它需要运行以下方法:

FormsAuthentication.RedirectFromLoginPage("...");

这里的问题是,正如我所提到的,loggin表单使用ajax表单,并使用json获取响应,因此无法重定向.

我怎么能填写'HttpContext.Current.User'？

谢谢.

更新:

这是注册方法:

 [HttpPost]
        public ActionResult Register(Person person)
        {
            var q = da.Persons.Where(x => x.LoginName == person.LoginName.ToLower()).FirstOrDefault();

            if (q != null)
            {
                ModelState.AddModelError("", "Username is repettive, try other one");

                return Json(new object[] { false, this.RenderPartialViewToString("RegisterControl", person) });
            }
            else
            {
                if (person.LoginName.ToLower() == "admin")
                {
                    person.IsAdmin = true;
                    person.IsActive = true;
                }

                da.Persons.Add(person);

                da.SaveChanges();

                FormsAuthentication.SetAuthCookie(person.LoginName,false);
return Json(new object[] { true, "You have registered successfully!" });

}

}

Answer 1

FormsAuthentication不支持立即设置用户的身份,但您应该可以通过以下方式伪造它:

HttpContext.Current.User = new System.Security.Principal.GenericPrincipal(new System.Security.Principal.GenericIdentity(person.LoginName), new string[] { /* fill roles if any */ });

Answer 2

这是我最终使用的版本,它基于@ AdamTuliper-MSFT的答案.它只能在登录后立即使用,但在重定向之前,允许其他代码访问HttpContext.User.

• 如果已经过身份验证,请勿执行任何操作
• 不修改cookie,因为这应仅用于此请求的生命周期
• 缩短一些东西,用userdata更安全一些(永远不应该为null,但......)

在调用SetAuthCookie()后调用此方法,如下所示:

// in login function
FormsAuthentication.SetAuthCookie(model.UserName, model.RememberMe);
AuthenticateThisRequest();

private void AuthenticateThisRequest()
{
    //NOTE:  if the user is already logged in (e.g. under a different user account)
    //       then this will NOT reset the identity information.  Be aware of this if
    //       you allow already-logged in users to "re-login" as different accounts 
    //       without first logging out.
    if (HttpContext.User.Identity.IsAuthenticated) return;

    var name = FormsAuthentication.FormsCookieName;
    var cookie = Response.Cookies[name]; 
    if (cookie != null)
    {   
        var ticket = FormsAuthentication.Decrypt(cookie.Value);
        if (ticket != null && !ticket.Expired)
        {
            string[] roles = (ticket.UserData as string ?? "").Split(',');
            HttpContext.User = new GenericPrincipal(new FormsIdentity(ticket), roles);
        }
    }
}

编辑:删除对Request.Cookies的调用,如@ AdamTuplier-MSFT所述.

Answer 3

您需要手动设置它.而不是重新发明轮子,请注意这里有关更新请求的当前主体的部分 - 这就是您的选择.

如何在不使用FormsAuthentication.RedirectFromLoginPage时将Request.IsAuthenticated设置为true？

public void RenewCurrentUser()
{
    System.Web.HttpCookie authCookie =
        System.Web.HttpContext.Current.Request.Cookies[FormsAuthentication.FormsCookieName];
    if (authCookie != null)
    {
        FormsAuthenticationTicket authTicket = null;
        authTicket = FormsAuthentication.Decrypt(authCookie.Value);


    if (authTicket != null && !authTicket.Expired)
    {
        FormsAuthenticationTicket newAuthTicket = authTicket;

        if (FormsAuthentication.SlidingExpiration)
        {
            newAuthTicket = FormsAuthentication.RenewTicketIfOld(authTicket);
        }
        string userData = newAuthTicket.UserData;
        string[] roles = userData.Split(',');

        System.Web.HttpContext.Current.User =
            new System.Security.Principal.GenericPrincipal(new FormsIdentity(newAuthTicket), roles);
    }
}

}