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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using DotNetOpenId.RelyingParty;
using System.Web.Security;
using DotNetOpenId;
namespace RelyingPartyMvc.Controllers {
public class UserController : Controller {
public ActionResult Index() {
if (!User.Identity.IsAuthenticated) Response.Redirect("/User/Login?ReturnUrl=Index");
return View("Index");
}
public ActionResult Logout() {
FormsAuthentication.SignOut();
return Redirect("/Home");
}
public ActionResult Login() {
// Stage 1: display login form to user
return View("Login");
}
public ActionResult Authenticate() {
var openid = new OpenIdRelyingParty();
if (openid.Response == null) {
// Stage 2: user submitting Identifier
Identifier id;
if (Identifier.TryParse(Request.Form["openid_identifier"], out id)) {
openid.CreateRequest(Request.Form["openid_identifier"]).RedirectToProvider();
} else {
ViewData["Message"] = "Invalid identifier";
return View("Login");
}
} else {
// Stage 3: OpenID Provider sending assertion response
switch (openid.Response.Status) {
case AuthenticationStatus.Authenticated:
FormsAuthentication.RedirectFromLoginPage(openid.Response.ClaimedIdentifier, false);
break;
case AuthenticationStatus.Canceled:
ViewData["Message"] = "Canceled at provider";
return View("Login");
case AuthenticationStatus.Failed:
ViewData["Message"] = openid.Response.Exception.Message;
return View("Login");
}
}
return new EmptyResult();
}
}
}
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