Horton

Re: [PoC] Federated Authn/z with OAUTHBEARER

Jacob Champion <jchampion@timescale.com>

View thread
From: Jacob Champion <jchampion@timescale.com>
To: Stephen Frost <sfrost@snowman.net>
Cc: mahendrakar s <mahendrakarforpg@gmail.com>, Andrey Chudnovsky <achudnovskij@gmail.com>, hlinnaka@iki.fi, Michael Paquier <michael@paquier.xyz>, Pg Hackers <pgsql-hackers@postgresql.org>, smilingsamay@gmail.com
Date: 2023-02-21T22:24:12Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. meson: Fix install-quiet after clean

  2. oauth: Run Autoconf tests with correct compiler flags

  3. Link libpq with libdl if the platform needs that.

  4. Doc: correct spelling of meson switch.

  5. oauth: Correct SSL dependency for libpq-oauth.a

  6. oauth: Fix Autoconf build on macOS

  7. oauth: Move the builtin flow into a separate module

  8. Remove a stray "pgrminclude" annotation

  9. oauth: Simplify copy of PGoauthBearerRequest

  10. oauth: Improve validator docs on interruptibility

  11. oauth: Disallow synchronous DNS in libcurl

  12. oauth: Fix postcondition for set_timer on macOS

  13. oauth: Use IPv4-only issuer in oauth_validator tests

  14. Work around OAuth/EVFILT_TIMER quirk on NetBSD.

  15. oauth: Fix incorrect const markers in struct

  16. Add missing entry to oauth_validator test .gitignore

  17. cirrus: Temporarily fix libcurl link error

  18. Add support for OAUTHBEARER SASL mechanism

  19. libpq: Handle asynchronous actions during SASL

  20. require_auth: prepare for multiple SASL mechanisms

  21. Move PG_MAX_AUTH_TOKEN_LENGTH to libpq/auth.h

  22. Make SASL max message length configurable

  23. jsonapi: fully initialize dummy lexer

  24. common/jsonapi: support libpq as a client

  25. Remove fe_memutils from libpgcommon_shlib

  26. Revert ECPG's use of pnstrdup()

  27. Explicitly require password for SCRAM exchange

  28. Refactor SASL exchange to return tri-state status

On Mon, Feb 20, 2023 at 2:35 PM Stephen Frost <sfrost@snowman.net> wrote:
> Having skimmed back through this thread again, I still feel that the
> direction that was originally being taken (actually support something in
> libpq and the backend, be it with libiddawc or something else or even
> our own code, and not just throw hooks in various places) makes a lot
> more sense and is a lot closer to how Kerberos and client-side certs and
> even LDAP auth work today.

Cool, that helps focus the effort. Thanks!

> That also seems like a much better answer
> for our users when it comes to new authentication methods than having
> extensions and making libpq developers have to write their own custom
> code, not to mention that we'd still need to implement something in psql
> to provide such a hook if we are to have psql actually usefully exercise
> this, no?

I don't mind letting clients implement their own flows... as long as
it's optional. So even if we did use a hook in the end, I agree that
we've got to exercise it ourselves.

> In the Kerberos test suite we have today, we actually bring up a proper
> Kerberos server, set things up, and then test end-to-end installing a
> keytab for the server, getting a TGT, getting a service ticket, testing
> authentication and encryption, etc.  Looking around, it seems like the
> equivilant would perhaps be to use Glewlwyd and libiddawc or libcurl and
> our own code to really be able to test this and show that it works and
> that we're doing it correctly, and to let us know if we break something.

The original patchset includes a test server in Python -- a major
advantage being that you can test the client and server independently
of each other, since the implementation is so asymmetric. Additionally
testing against something like Glewlwyd would be a great way to stack
coverage. (If we *only* test against a packaged server, though, it'll
be harder to test our stuff in the presence of malfunctions and other
corner cases.)

Thanks,
--Jacob