JS firebase Oauth based on Google Groups

[Thomas Muller]

I'm considering putting together a quick JS app for my workplace using Firebase. We use the Gsuite for internal accounts and email, and have a global Googfe Group for all staff. I figured using Groups to manage the list of accounts with access would be a clean and secure solution.

Does anyone know if it is possible to authenticate via Google Oauth and also perform a check of whether the person is also a member of a particular group? 

Thanks, in advance, 

Tom

[Samuel Stern]

Hi Thomas,

I don't believe there is any way to do this as a single operation, where sign-in would be tied to group membership.  But there is a GSuite API for determining group membership:

https://developers.google.com/admin-sdk/directory/v1/reference/members/hasMember

Maybe you could call that in a Cloud Function triggered by authentication?

https://firebase.google.com/docs/auth/extend-with-functions

- Sam

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