public ExternalLoginHandlerViewModel GetExternalLoginHandler(ModelMethodContext context)
{
var model = new ExternalLoginHandlerViewModel
{
ProviderName = StateContext.Data[ProviderNameKey] as string
};
// Check that a Provider is specified
if (String.IsNullOrWhiteSpace(model.ProviderName))
{
ExternalLoginFailRedirect();
return null;
}
var loginInfo = _authenticationManager.GetExternalLoginInfo();
if (loginInfo == null)
{
ExternalLoginFailRedirect();
return null;
}
var signInStatus = ExternalSignIn(loginInfo, false);
switch (signInStatus)
{
case SignInStatus.Success:
RedirectToLocal();
return null;
case SignInStatus.NotVerified:
var user = _userManager.Find(loginInfo.Login);
SendEmailVerificationCode(user, reminder: true);
return null;
case SignInStatus.LockedOut:
StateController.Navigate("AccountLocked");
return null;
case SignInStatus.RequiresTwoFactorAuthentication:
StateController.Navigate(
"SendTwoFactorCode", new NavigationData
{
{ReturnUrlKey, StateContext.Data[ReturnUrlKey]}
});
return null;
}
if (_context.User.Identity.IsAuthenticated)
{
// Apply Xsrf check when linking
var userId = _context.User.Identity.GetUserId();
var verifiedloginInfo = _authenticationManager
.GetExternalLoginInfo(XsrfKey, userId);
if (verifiedloginInfo == null)
{
ExternalLoginFailRedirect();
return null;
}
var result = _userManager.AddLogin(userId, verifiedloginInfo.Login);
if (result.Succeeded)
{
RedirectToLocal();
return null;
}
AddErrors(result, context);
}
else
{
// It's a new account, so get additional local details
model.UserName = loginInfo.DefaultUserName;
model.Email = loginInfo.Email;
}
return model;
}
public void ExternalLoginHandler(
ExternalLoginHandlerViewModel model,
ModelMethodContext context)
{
if (!context.ModelState.IsValid) return;
var newUser = CreateUserFromRegistration(model);
var result = _userManager.Create(newUser);
if (result.Succeeded)
{
var loginInfo = _context.GetOwinContext().Authentication
.GetExternalLoginInfo();
if (loginInfo == null)
{
ExternalLoginFailRedirect();
return;
}
result = _userManager.AddLogin(newUser.Id, loginInfo.Login);
if (result.Succeeded)
{
// Microsoft's default approach does not validate the user's
// email address, deferring the authentication to the
// third-party provider.
//
// SignIn(user, isPersistent: false);
// RedirectToLocal();
RegisterNewUser(newUser);
return;
}
}
AddErrors(result, context);
}
