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namespace OpenIdRelyingPartyMvc.Controllers {
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Security;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OpenId;
using DotNetOpenAuth.OpenId.RelyingParty;
public class UserController : Controller {
private static OpenIdRelyingParty openid = new OpenIdRelyingParty();
public ActionResult Index() {
if (!User.Identity.IsAuthenticated) {
Response.Redirect("~/User/Login?ReturnUrl=Index");
}
return View("Index");
}
public ActionResult LoginPopup() {
return View("LoginPopup");
}
public ActionResult Logout() {
FormsAuthentication.SignOut();
return Redirect("~/Home");
}
public ActionResult Login() {
// Stage 1: display login form to user
return View("Login");
}
[ValidateInput(false)]
public ActionResult Authenticate(string returnUrl) {
var response = openid.GetResponse();
if (response == null) {
// Stage 2: user submitting Identifier
Identifier id;
if (Identifier.TryParse(Request.Form["openid_identifier"], out id)) {
try {
return openid.CreateRequest(Request.Form["openid_identifier"]).RedirectingResponse.AsActionResult();
} catch (ProtocolException ex) {
ViewData["Message"] = ex.Message;
return View("Login");
}
} else {
ViewData["Message"] = "Invalid identifier";
return View("Login");
}
} else {
// Stage 3: OpenID Provider sending assertion response
switch (response.Status) {
case AuthenticationStatus.Authenticated:
Session["FriendlyIdentifier"] = response.FriendlyIdentifierForDisplay;
FormsAuthentication.SetAuthCookie(response.ClaimedIdentifier, false);
if (!string.IsNullOrEmpty(returnUrl)) {
return Redirect(returnUrl);
} else {
return RedirectToAction("Index", "Home");
}
case AuthenticationStatus.Canceled:
ViewData["Message"] = "Canceled at provider";
return View("Login");
case AuthenticationStatus.Failed:
ViewData["Message"] = response.Exception.Message;
return View("Login");
}
}
return new EmptyResult();
}
}
}
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