public ActionResult Register(User user, string identifier, string returnUrl)
{
//The registration form has been submitted
try
{
if (ModelState.IsValid)
{
OpenId openid = new OpenId
{
OpenIdUrl = identifier,
User = user
};
users.AddOpenId(openid);
users.SaveChanges();
// Now let's login out user to out application
IssueFormsAuthenticationTicket(user);
// We're done, let's get back to where we started from.
if (string.IsNullOrEmpty(returnUrl))
return RedirectToAction("Index", "Home");
else
return Redirect(returnUrl);
}
var registrationModel = new RegistrationViewModel(identifier)
{
Username = user.Username,
Email = user.Email,
FullName = user.FullName,
ReturnUrl = returnUrl
};
return View(registrationModel);
}
catch
{
var registrationModel = new RegistrationViewModel(identifier)
{
Username = user.Username,
Email = user.Email,
FullName = user.FullName,
ReturnUrl = returnUrl
};
return View(registrationModel);
}
}
public ActionResult Login(string openid_identifier, string returnUrl)
{
var response = openId.GetResponse();
// If this is the postback from our login form response will be null as we haven't yet dealt with the OpenID provider.
if (response == null)
{
//*************************************************************************************************
//* Step 1: Here we just display the login form and let the user fill in the OpenID provider URL. *
//*************************************************************************************************
// This happens if OpenID identifier isn't set which means that the user didn't fill out the login form yet.
// All we need to do is display the login form.
if (string.IsNullOrEmpty(openid_identifier))
return View();
//**********************************************************
//* Step 2: Send the request to the OpenId provider server *
//**********************************************************
return SendRequestToOpenIdProvider(openid_identifier);
}
else //If response is not null this is the callback from the OpenID provider.
{
//******************************************************
//* Step 3: OpenId provider sending assertion response *
//******************************************************
//This is the point right after the user dealt with the OpenId provider
switch (response.Status)
{
case AuthenticationStatus.Authenticated:
// We first need to get the identifier that the user has logged in with
// DotNetOpenAuth gives us a nice serialized identifier so we don't have to deal with
// differences between username.myopenid.com and http://www.myopenid.com/gligoran
string identifier = response.ClaimedIdentifier;
var user = users.GetUser(identifier);
if (user != null)
{
// This user is already registered.
// Now we need to let ASP.NET know about the user.
IssueFormsAuthenticationTicket(user);
// Now let's actually get to where we wanted to go or to the homepage
if (string.IsNullOrEmpty(returnUrl))
return RedirectToAction("Index", "Home");
else
return Redirect(returnUrl);
}
else
{
// No user with this OpenID was found, so the user will have to register first.
// Note that this step can be completely automatic if you get everything you need from OpenID provider.
// But as some providers don't return everything you asked for a form for a user to fill out the missing data is a nice addition.
var registrationModel = new RegistrationViewModel(identifier)
{
ReturnUrl = returnUrl
};
// First let's see which of the requested data we actually got.
// We can prefill the registration form with this.
var simpleReg = response.GetExtension<ClaimsResponse>();
if (simpleReg != null)
{
if (!string.IsNullOrEmpty(simpleReg.Email))
registrationModel.Email = simpleReg.Email;
if (!string.IsNullOrEmpty(simpleReg.FullName))
registrationModel.FullName = simpleReg.FullName;
if (!string.IsNullOrEmpty(simpleReg.Nickname))
registrationModel.Username = simpleReg.Nickname;
}
// Now let's display the registration form
return View("Register", registrationModel);
}
case AuthenticationStatus.Canceled:
ModelState.AddModelError("openid_identifier", "Authetication canceled");
break;
case AuthenticationStatus.Failed:
ModelState.AddModelError("openid_identifier", "Authetication failed");
break;
}
}
// Something went wrong, so we'll redisplay the Login form which will also hold the error message
return View();
}
