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The previous minimum was to maintain support for Python 3.5, but we
now require Python 3.6 anyway (commit 45363fca637), so that reason is
obsolete. A small raise to Meson 0.57 allows getting rid of a fair
amount of version conditionals and silences some future-deprecated
warnings.
With the version bump, the following deprecation warnings appeared and
are fixed:
WARNING: Project targets '>=0.57' but uses feature deprecated since '0.55.0': ExternalProgram.path. use ExternalProgram.full_path() instead
WARNING: Project targets '>=0.57' but uses feature deprecated since '0.56.0': meson.build_root. use meson.project_build_root() or meson.global_build_root() instead.
It turns out that meson 0.57.0 and 0.57.1 are buggy for our use, so
the minimum is actually set to 0.57.2. This is specific to this
version series; in the future we won't necessarily need to be this
precise.
Reviewed-by: Nazir Bilal Yavuz <byavuz81@gmail.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/flat/42e13eb0-862a-441e-8d84-4f0fd5f6def0%40eisentraut.org
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Check the ctx->nested level as we go, to prevent a server from running
the client out of stack space.
The limit we choose when communicating with authorization servers can't
be overly strict, since those servers will continue to add extensions in
their JSON documents which we need to correctly ignore. For the SASL
communication, we can be more conservative, since there are no defined
extensions (and the peer is probably more Postgres code).
Reviewed-by: Aleksander Alekseev <aleksander@timescale.com>
Discussion: https://postgr.es/m/CAOYmi%2Bm71aRUEi0oQE9ciBnBS8xVtMn3CifaPu2kmJzUfhOZgA%40mail.gmail.com
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9219093cab2607f modularized log_connections output to allow more
granular control over which aspects of connection establishment are
logged. It converted the boolean log_connections GUC into a list of strings
and deprecated previously supported boolean-like values on, off, true,
false, 1, 0, yes, and no. Those values still work, but they are
supported mainly for backwards compatability. As such, documented
examples of log_connections should not use these deprecated values.
Update references in the docs to deprecated log_connections values. Many
of the tests use log_connections. This commit also updates the tests to
use the new values of log_connections. In some of the tests, the updated
log_connections value covers a narrower set of aspects (e.g. the
'authentication' aspect in the tests in src/test/authentication and the
'receipt' aspect in src/test/postmaster). In other cases, the new value
for log_connections is a superset of the previous included aspects (e.g.
'all' in src/test/kerberos/t/001_auth.pl).
Reported-by: Peter Eisentraut <peter@eisentraut.org>
Author: Melanie Plageman <melanieplageman@gmail.com>
Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Reviewed-by: Jacob Champion <jacob.champion@enterprisedb.com>
Discussion: https://postgr.es/m/e1586594-3b69-4aea-87ce-73a7488cdc97%40eisentraut.org
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The additional packaging footprint of the OAuth Curl dependency, as well
as the existence of libcurl in the address space even if OAuth isn't
ever used by a client, has raised some concerns. Split off this
dependency into a separate loadable module called libpq-oauth.
When configured using --with-libcurl, libpq.so searches for this new
module via dlopen(). End users may choose not to install the libpq-oauth
module, in which case the default flow is disabled.
For static applications using libpq.a, the libpq-oauth staticlib is a
mandatory link-time dependency for --with-libcurl builds. libpq.pc has
been updated accordingly.
The default flow relies on some libpq internals. Some of these can be
safely duplicated (such as the SIGPIPE handlers), but others need to be
shared between libpq and libpq-oauth for thread-safety. To avoid
exporting these internals to all libpq clients forever, these
dependencies are instead injected from the libpq side via an
initialization function. This also lets libpq communicate the offsets of
PGconn struct members to libpq-oauth, so that we can function without
crashing if the module on the search path came from a different build of
Postgres. (A minor-version upgrade could swap the libpq-oauth module out
from under a long-running libpq client before it does its first load of
the OAuth flow.)
This ABI is considered "private". The module has no SONAME or version
symlinks, and it's named libpq-oauth-<major>.so to avoid mixing and
matching across Postgres versions. (Future improvements may promote this
"OAuth flow plugin" to a first-class concept, at which point we would
need a public API to replace this anyway.)
Additionally, NLS support for error messages in b3f0be788a was
incomplete, because the new error macros weren't being scanned by
xgettext. Fix that now.
Per request from Tom Lane and Bruce Momjian. Based on an initial patch
by Daniel Gustafsson, who also contributed docs changes. The "bare"
dlopen() concept came from Thomas Munro. Many people reviewed the design
and implementation; thank you!
Co-authored-by: Daniel Gustafsson <daniel@yesql.se>
Reviewed-by: Andres Freund <andres@anarazel.de>
Reviewed-by: Christoph Berg <myon@debian.org>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl>
Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Reviewed-by: Wolfgang Walther <walther@technowledgy.de>
Discussion: https://postgr.es/m/641687.1742360249%40sss.pgh.pa.us
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RHEL8 ships a patched 3.6.8 as its base Python version, and I
accidentally let some newer Python-isms creep into oauth_server.py
during development.
Reported-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl>
Tested-by: Renan Alves Fonseca <renanfonseca@gmail.com>
Tested-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/16098.1745079444%40sss.pgh.pa.us
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Cluster.pm's connect_fails routine has long had the ability to
sniff the postmaster log file for expected messages after a
connection failure. However, that's always had a race condition:
on some platforms it's possible for psql to exit and the test
script to slurp up the postmaster log before the backend process
has been able to write out its final log messages. Back in
commit 55828a6b6 we disabled a bunch of tests after discovering
that, and the aim of this patch is to re-enable them.
(The sibling function connect_ok doesn't seem to have a similar
problem, mainly because the messages we look for come out during
the authentication handshake, so that if psql reports successful
connection they should certainly have been emitted already.)
The solution used here is borrowed from 002_connection_limits.pl's
connect_fails_wait routine: set the server's log_min_messages setting
to DEBUG2 so that the postmaster will log child-process exit, and then
wait till we see that log entry before checking for the messages we
are actually interested in.
If a TAP test uses connect_fails' log_like or log_unlike options, and
forgets to set log_min_messages, those connect_fails calls will now
hang until timeout. Fixing up the existing callers shows that we had
several other TAP tests that were in theory vulnerable to the same
problem. It's unclear whether the lack of failures is just luck, or
lack of buildfarm coverage, or perhaps there is some obscure timing
effect that only manifests in SSL connections. In any case, this
change should in principle make those other call sites more robust.
I'm not inclined to back-patch though, unless sometime we observe
an actual failure in one of them.
Reported-by: Andrew Dunstan <andrew@dunslane.net>
Author: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/984fca80-85a8-4c6f-a5cc-bb860950b435@dunslane.net
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The large majority of these have been introduced by recent commits done
in the v18 development cycle.
Author: Alexander Lakhin <exclusion@gmail.com>
Discussion: https://postgr.es/m/9a7763ab-5252-429d-a943-b28941e0e28b@gmail.com
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Make sure that function declarations use names that exactly match the
corresponding names from function definitions in a few places. These
inconsistencies were all introduced during Postgres 18 development.
This commit was written with help from clang-tidy, by mechanically
applying the same rules as similar clean-up commits (the earliest such
commit was commit 035ce1fe).
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The connect_timeout=1 setting for the --hang-forever test was left in
place and used by later tests, causing unexpected timeouts on slower
buildfarm animals. Remove it when no longer needed.
Per buildfarm member skink, reported by Andres on Discord.
Author: Jacob Champion <jacob.champion@enterprisedb.com>
Reported-by: Andres Freund <andres@anarazel.de>
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register_socket() missed a variable declaration if neither
HAVE_SYS_EPOLL_H nor HAVE_SYS_EVENT_H was defined.
While we're fixing that, adjust the tests to check pg_config.h for one
of the multiplexer implementations, rather than assuming that Windows is
the only platform without support. (Christoph reported this on
hurd-amd64, an experimental Debian.)
Author: Jacob Champion <jacob.champion@enterprisedb.com>
Reported-by: Christoph Berg <myon@debian.org>
Discussion: https://postgr.es/m/Z-sPFl27Y0ZC-VBl%40msg.df7cb.de
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The test authorization server implemented in oauth_server.py does not
listen on IPv6. Most of the time, libcurl happily falls back to IPv4
after failing its initial connection, but on NetBSD, something is
consistently showing up on the unreserved IPv6 port and causing a test
failure.
Rather than deal with dual-stack details across all test platforms,
change the issuer to enforce the use of IPv4 only. (This elicits more
punishing timeout behavior from libcurl, so it's a useful change from
the testing perspective as well.)
Author: Jacob Champion <jacob.champion@enterprisedb.com>
Reported-by: Thomas Munro <thomas.munro@gmail.com>
Discussion: https://postgr.es/m/CAOYmi%2Bn4EDOOUL27_OqYT2-F2rS6S%2B3mK-ppWb2Ec92UEoUbYA%40mail.gmail.com
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Commit b3f0be788 accidentally missed adding the oauth client test
binary to the relevant .gitignore.
Reported-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/2839306.1740082041@sss.pgh.pa.us
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This commit implements OAUTHBEARER, RFC 7628, and OAuth 2.0 Device
Authorization Grants, RFC 8628. In order to use this there is a
new pg_hba auth method called oauth. When speaking to a OAuth-
enabled server, it looks a bit like this:
$ psql 'host=example.org oauth_issuer=... oauth_client_id=...'
Visit https://oauth.example.org/login and enter the code: FPQ2-M4BG
Device authorization is currently the only supported flow so the
OAuth issuer must support that in order for users to authenticate.
Third-party clients may however extend this and provide their own
flows. The built-in device authorization flow is currently not
supported on Windows.
In order for validation to happen server side a new framework for
plugging in OAuth validation modules is added. As validation is
implementation specific, with no default specified in the standard,
PostgreSQL does not ship with one built-in. Each pg_hba entry can
specify a specific validator or be left blank for the validator
installed as default.
This adds a requirement on libcurl for the client side support,
which is optional to build, but the server side has no additional
build requirements. In order to run the tests, Python is required
as this adds a https server written in Python. Tests are gated
behind PG_TEST_EXTRA as they open ports.
This patch has been a multi-year project with many contributors
involved with reviews and in-depth discussions: Michael Paquier,
Heikki Linnakangas, Zhihong Yu, Mahendrakar Srinivasarao, Andrey
Chudnovsky and Stephen Frost to name a few. While Jacob Champion
is the main author there have been some levels of hacking by others.
Daniel Gustafsson contributed the validation module and various bits
and pieces; Thomas Munro wrote the client side support for kqueue.
Author: Jacob Champion <jacob.champion@enterprisedb.com>
Co-authored-by: Daniel Gustafsson <daniel@yesql.se>
Co-authored-by: Thomas Munro <thomas.munro@gmail.com>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Reviewed-by: Antonin Houska <ah@cybertec.at>
Reviewed-by: Kashif Zeeshan <kashi.zeeshan@gmail.com>
Discussion: https://postgr.es/m/d1b467a78e0e36ed85a09adf979d04cf124a9d4b.camel@vmware.com
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