public async Task <IHttpActionResult> GetExternalLogin(string provider, string error = null)
{
var redirectUri = string.Empty;
var outError = string.Empty;
var outClient = new Client();
if (error != null)
{
return(BadRequest(Uri.EscapeDataString(error)));
}
if (!User.Identity.IsAuthenticated)
{
return(new ChallengeResult(provider, this));
}
if (!_authService.ValidateClient(Request, ref outError, ref outClient))
{
return(BadRequest(outError));
}
if (!_authService.ValidateRedirectUri(ref redirectUri, ref outError, Request, outClient))
{
return(BadRequest(outError));
}
var externalLogin = ExternalLoginData.FromIdentity(User.Identity as ClaimsIdentity);
if (externalLogin == null)
{
return(InternalServerError());
}
if (externalLogin.LoginProvider != provider)
{
Authentication.SignOut(DefaultAuthenticationTypes.ExternalCookie);
return(new ChallengeResult(provider, this));
}
var user = await _repo.FindUserAsync(new UserLoginInfo(externalLogin.LoginProvider, externalLogin.ProviderKey));
var hasRegistered = user != null;
redirectUri = string.Format("{0}#external_access_token={1}&provider={2}&haslocalaccount={3}&external_user_name={4}&user_id={5}",
redirectUri,
externalLogin.ExternalAccessToken,
externalLogin.LoginProvider,
hasRegistered,
externalLogin.UserName,
externalLogin.UserId);
return(Redirect(redirectUri));
}