In a quest to enable authentication token renewal in my Google Drive module I made a few simple modifications to DNN core and Google auth provider to catch and store refresh token inside [GoogleUserToken] cookie. Which I store in a database table when I am able to access a valid UserID.

By definition - refresh token is issued only when the user is prompted to provide consent. As such the refresh token needs to be stored on a permanent basis.

By adding my save logic to [UserLogin] method in [AspNetMembershipProvider] I got this working with one limitation. The refresh token only gets saved if the user logs in for the very first time. Even if I revoke access to the application forcing prompt for consent on next login which generates a new refresh token which I would like to save.

What I failed to find is the logic that initiates saving of auth token to the [UserAuthentication] table. I want to add a call two lines of code to save refresh token (if one is available).

I have found reference to [AddUserAuthentication] method in [AuthenticationController] but from what I could find this method is used for Registration and Association flow. Not entirely sure how this affects Social login providers.