I have been searching for many hours now for a solution to the following problem:
I have an Ionic App that already authenticates with facebook (i.e. i get a valid facebook access_token back), this happens without the lock widget but with a cordova plugin, because I want to avoid the browser window being opened). Now I want to “issue” a valid auth0 access_token incl. scope=openid on my backend back to the app so that it can fetch the userinfo.
Now the issue is on the server:
a) I send the facebook token to my backend to do a validation if the facebook access_token is still valid
b) if this is the case, I want to request a auth0 access_token (including the scope openid) to sent back to the app so that the app can then fetch the userProfile with the received access_token from auth0.
I have already set up a machine-to-machine application but I cannot get my backend to successfully request an access_token with the scope=openid.
Any help is deeply appreciated!