I am trying to get the Twitter Access Token & Secret Access Token from an already authenticated user ( facebook logged in ) on my site.
The user already authorized my app once and I have his permission to read/write his tweets.
So now the user is logged in via facebook and I would like to fetch his associated twitter access token via his user_id without that he has to go through the whole oauth auth flow.
Is there an API function like : Twitter->getAccessToken($TwitterID)? Similiar to Facebooks API?
I don´t want the user to be redirected to Twitterslandinpage and type in his/her password/username once again.
Thank you very much for help!