public async Task <IActionResult> RegisterUser(RegisterUserViewModel model)
{
if (ModelState.IsValid)
{
// create user + claims
var userToCreate = new Galal.IDP.Entities.User();
userToCreate.SubjectId = Guid.NewGuid().ToString();
userToCreate.Password = model.Password;
userToCreate.Username = model.Username;
userToCreate.IsActive = true;
userToCreate.Claims.Add(new Galal.IDP.Entities.UserClaim("country", model.Country));
userToCreate.Claims.Add(new Galal.IDP.Entities.UserClaim("address", model.Address));
userToCreate.Claims.Add(new Galal.IDP.Entities.UserClaim("given_name", model.Firstname));
userToCreate.Claims.Add(new Galal.IDP.Entities.UserClaim("family_name", model.Lastname));
userToCreate.Claims.Add(new Galal.IDP.Entities.UserClaim("email", model.Email));
userToCreate.Claims.Add(new Galal.IDP.Entities.UserClaim("subscriptionlevel", "FreeUser"));
// if we're provisioning a user via external login, we must add the provider &
// user id at the provider to this user's logins
if (model.IsProvisioningFromExternal)
{
userToCreate.Logins.Add(new Galal.IDP.Entities.UserLogin()
{
LoginProvider = model.Provider,
ProviderKey = model.ProviderUserId
});
}
// add it through the repository
_IDPUserRepository.AddUser(userToCreate);
if (!_IDPUserRepository.Save())
{
throw new Exception($"Creating a user failed.");
}
if (!model.IsProvisioningFromExternal)
{
// log the user in
await HttpContext.SignInAsync(userToCreate.SubjectId, userToCreate.Username);
}
// continue with the flow
if (_interaction.IsValidReturnUrl(model.ReturnUrl) || Url.IsLocalUrl(model.ReturnUrl))
{
return(Redirect(model.ReturnUrl));
}
return(Redirect("~/"));
}
// ModelState invalid, return the view with the passed-in model
// so changes can be made
return(View(model));
}
public async Task <IActionResult> Callback()
{
// read external identity from the temporary cookie
var result = await HttpContext.AuthenticateAsync(IdentityServer4.IdentityServerConstants.ExternalCookieAuthenticationScheme);
// retrieve return URL
var returnUrl = result.Properties.Items["returnUrl"] ?? "~/";
if (result?.Succeeded != true)
{
throw new Exception("External authentication error");
}
if (_logger.IsEnabled(LogLevel.Debug))
{
var externalClaims = result.Principal.Claims.Select(c => $"{c.Type}: {c.Value}");
_logger.LogDebug("External claims: {@claims}", externalClaims);
}
// lookup our user and external provider info
var(user, provider, providerUserId, claims) = FindUserFromExternalProvider(result);
//if (user == null)
//{
// // this might be where you might initiate a custom workflow for user registration
// // in this sample we don't show how that would be done, as our sample implementation
// // simply auto-provisions new external user
// user = AutoProvisionUser(provider, providerUserId, claims);
//}
if (user == null)
{
// user wasn't found by provider, but maybe one exists with the same email address?
if (provider == "Facebook")
{
// email claim from Facebook
var email = claims.FirstOrDefault(c =>
c.Type == "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress");
if (email != null)
{
var userByEmail = _IDPUserRepository.GetUserByEmail(email.Value);
if (userByEmail != null)
{
// add Facebook as a provider for this user
_IDPUserRepository.AddUserLogin(userByEmail.SubjectId, provider, result.Principal.Claims.FirstOrDefault(x => x.Type == JwtClaimTypes.Subject).Value);
if (!_IDPUserRepository.Save())
{
throw new Exception($"Adding a login for a user failed.");
}
// redirect to ExternalLoginCallback
var continueWithUrlAfterAddingUserLogin =
Url.Action("ExternalLoginCallback", new { returnUrl = returnUrl });
return(Redirect(continueWithUrlAfterAddingUserLogin));
}
}
}
// retrieve return URL
// var returnUrl = result.Properties.Items["returnUrl"] ?? "~/";
user = AutoProvisionUser(provider, providerUserId, claims);
var returnUrlAfterRegisteration =
Url.Action("Callback", new { returnUrl = returnUrl });
var continueWithUrl = Url.Action("RegisterUser", "UserRegisteration"
, new { returnUrl = returnUrlAfterRegisteration, provider = provider, providerUserId = result.Principal.Claims.FirstOrDefault(x => x.Type == JwtClaimTypes.Subject).Value });
return(Redirect(continueWithUrl));
}
// this allows us to collect any additonal claims or properties
// for the specific prtotocols used and store them in the local auth cookie.
// this is typically used to store data needed for signout from those protocols.
var additionalLocalClaims = new List <Claim>();
var localSignInProps = new AuthenticationProperties();
ProcessLoginCallbackForOidc(result, additionalLocalClaims, localSignInProps);
ProcessLoginCallbackForWsFed(result, additionalLocalClaims, localSignInProps);
ProcessLoginCallbackForSaml2p(result, additionalLocalClaims, localSignInProps);
// issue authentication cookie for user
await HttpContext.SignInAsync(user.SubjectId, user.Username, provider, localSignInProps, additionalLocalClaims.ToArray());
// delete temporary cookie used during external authentication
await HttpContext.SignOutAsync(IdentityServer4.IdentityServerConstants.ExternalCookieAuthenticationScheme);
// check if external login is in the context of an OIDC request
var context = await _interaction.GetAuthorizationContextAsync(returnUrl);
await _events.RaiseAsync(new UserLoginSuccessEvent(provider, providerUserId, user.SubjectId, user.Username, true, context?.ClientId));
if (context != null)
{
if (await _clientStore.IsPkceClientAsync(context.ClientId))
{
// if the client is PKCE then we assume it's native, so this change in how to
// return the response is for better UX for the end user.
return(View("Redirect", new RedirectViewModel {
RedirectUrl = returnUrl
}));
}
}
return(Redirect(returnUrl));
}
