Horton

Re: [PoC] Federated Authn/z with OAUTHBEARER

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Bruce Momjian <bruce@momjian.us>
Cc: Wolfgang Walther <walther@technowledgy.de>, Jacob Champion <jacob.champion@enterprisedb.com>, Daniel Gustafsson <daniel@yesql.se>, Christoph Berg <myon@debian.org>, Peter Eisentraut <peter@eisentraut.org>, Tom Lane <tgl@sss.pgh.pa.us>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>, Thomas Munro <thomas.munro@gmail.com>, Nazir Bilal Yavuz <byavuz81@gmail.com>, Antonin Houska <ah@cybertec.at>
Date: 2025-04-08T18:11:19Z
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

Hi,

On 2025-04-08 13:02:11 -0400, Bruce Momjian wrote:
> On Tue, Apr  8, 2025 at 06:57:18PM +0200, Wolfgang Walther wrote:
> > Jacob Champion:
> > > On Tue, Apr 8, 2025 at 9:32 AM Wolfgang Walther <walther@technowledgy.de> wrote:
> > > > And that should also not be a problem for distributions - they could offer a libpq and a libpq_oauth package, where only one of them can be installed at the same time, I guess? *
> > > My outsider understanding is that maintaining this sort of thing
> > > becomes a major headache, because of combinatorics. You don't really
> > > want to ship a libpq and libpq-with-gss and libpq-with-oauth and
> > > libpq-with-oauth-and-gss and ...
> > 
> > That would only be the case, if you were to consider those other
> > dependencies as "dangerous" as cURL. But we already depend on them. So if
> > it's really the case that cURL is that much worse, that we consider loading
> > it as a module... then the combinatorics should not be a problem either.
> > 
> > However, if the other deps are considered problematic as well, then the ship
> > has already sailed, and there is not point for a special case here anymore.
> 
> Yes, I think this is what I am asking too.  For me it was curl's
> security reputation and whether that would taint the security reputation
> of libpq. For Tom, I think it was the dependency additions.

I'd say that curl's security reputation is higher than most of our other
dependencies. We have dependencies for libraries with regular security issues,
with those issues at times not getting addressed for prolonged amounts of
time.

I do agree that there's an issue increasing libpq's indirect footprint
substantially, but I don't think that's due to curl's reputation or
anything. It's just needing a significantly higher number of shared libraries,
which comes with runtime and distribution overhead.

Greetings,

Andres Freund