public async Task <ActionResult> Callback([Bind(Prefix = "oauth_verifier")] string verifier, [Bind(Prefix = "oauth_token")] string oauthToken)
{
var token = RequestToken;
if (token == null)
{
return(Redirect("~/login"));
}
if (token.Key != oauthToken)
{
return(View("error"));
}
var accessToken = await _oauth.GetAccessToken(token, verifier);
_identity.Update(accessToken, await QueryInfo(msg => _oauth.Sign(msg, accessToken)));
return(Redirect(RedirectTo ?? "~/"));
}