Re: [PoC] Federated Authn/z with OAUTHBEARER

On Tue, Oct 8, 2024 at 3:46 AM Antonin Houska <ah(at)cybertec(dot)at> wrote:
> Perhaps I understand now. I use getmail [2] to retrieve email messages from my
> Google account. What made me confused is that the getmail application,
> although installed on my workstation (and thus the bearer token it eventually
> gets contains my email address), it's "someone else" (in particular the
> "Relying Party") from the perspective of the OpenID protocol. And the same
> applies to "psql" in the context of your patch.
>
> Thus, in addition to the email, we'd need special claims which authorize the
> RPs to access the database and only the database. Does this sound correct?

Yes. (One nitpick: the "special claims" in this case are not OpenID
claims at all, but OAuth scopes. The HBA will be configured with the
list of scopes that the server requires, and it requests those from
the client during the SASL handshake.)

> I'd like to play with the code a bit and provide some review before or during
> the next CF. That will probably generate some more questions.

Thanks very much for the review!

--Jacob