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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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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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Backpatch-through: 13
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The docs currently imply that ldapurl is for search+bind only, but
that's not true. Rearrange the docs to cover this better.
Add a test ldapurl with simple bind. This was previously allowed but
unexercised, and now that it's documented it'd be good to pin the
behavior.
Improve error when mixing LDAP bind modes. The option names had gone
stale; replace them with a more general statement.
Author: Jacob Champion <jacob.champion@enterprisedb.com>
Discussion: https://www.postgresql.org/message-id/flat/CAOYmi+nyg9gE0LeP=xQ3AgyQGR=5ZZMkVVbWd0uR8XQmg_dd5Q@mail.gmail.com
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If the test script die()d before running the first test, the whole test
was interpreted as SKIPped rather than failed. The PostgreSQL::Cluster
module got this right.
Backpatch to all supported versions.
Discussion: https://www.postgresql.org/message-id/fb898a70-3a88-4629-88e9-f2375020061d@iki.fi
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If the OpenLDAP installation directory is not found, set $setup to 0
so that the LDAP tests are skipped. The macOS checks were already
doing that, but the checks on other OS's were not. While we're at it,
improve the error message when the tests are skipped, to specify
whether the OS is supported at all, or if we just didn't find the
installation directory.
This was accidentally "working" without this, i.e. we were skipping
the tests if the OpenLDAP installation was not found, because of a bug
in the LdapServer test module: the END block clobbered the exit code
so if the script die()s before running the first subtest, the whole
test script was marked as SKIPped. The next commit will fix that bug,
but we need to fix the setup code first.
These checks should probably go into configure/meson, but this is
better than nothing and allows fixing the bug in the END block.
Backpatch to all supported versions.
Discussion: https://www.postgresql.org/message-id/fb898a70-3a88-4629-88e9-f2375020061d@iki.fi
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Reported-by: Michael Paquier
Discussion: https://postgr.es/m/ZZKTDPxBBMt3C0J9@paquier.xyz
Backpatch-through: 12
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Mostly, we need to check whether $ENV{PG_TEST_EXTRA} is set before
doing regular expression matches against it.
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There are a lot of Perl scripts in the tree, mostly code generation
and TAP tests. Occasionally, these scripts produce warnings. These
are probably always mistakes on the developer side (true positives).
Typical examples are warnings from genbki.pl or related when you make
a mess in the catalog files during development, or warnings from tests
when they massage a config file that looks different on different
hosts, or mistakes during merges (e.g., duplicate subroutine
definitions), or just mistakes that weren't noticed because there is a
lot of output in a verbose build.
This changes all warnings into fatal errors, by replacing
use warnings;
by
use warnings FATAL => 'all';
in all Perl files.
Discussion: https://www.postgresql.org/message-id/flat/06f899fd-1826-05ab-42d6-adeb1fd5e200%40eisentraut.org
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A PostgreSQL release tarball contains a number of prebuilt files, in
particular files produced by bison, flex, perl, and well as html and
man documentation. We have done this consistent with established
practice at the time to not require these tools for building from a
tarball. Some of these tools were hard to get, or get the right
version of, from time to time, and shipping the prebuilt output was a
convenience to users.
Now this has at least two problems:
One, we have to make the build system(s) work in two modes: Building
from a git checkout and building from a tarball. This is pretty
complicated, but it works so far for autoconf/make. It does not
currently work for meson; you can currently only build with meson from
a git checkout. Making meson builds work from a tarball seems very
difficult or impossible. One particular problem is that since meson
requires a separate build directory, we cannot make the build update
files like gram.h in the source tree. So if you were to build from a
tarball and update gram.y, you will have a gram.h in the source tree
and one in the build tree, but the way things work is that the
compiler will always use the one in the source tree. So you cannot,
for example, make any gram.y changes when building from a tarball.
This seems impossible to fix in a non-horrible way.
Second, there is increased interest nowadays in precisely tracking the
origin of software. We can reasonably track contributions into the
git tree, and users can reasonably track the path from a tarball to
packages and downloads and installs. But what happens between the git
tree and the tarball is obscure and in some cases non-reproducible.
The solution for both of these issues is to get rid of the step that
adds prebuilt files to the tarball. The tarball now only contains
what is in the git tree (*). Getting the additional build
dependencies is no longer a problem nowadays, and the complications to
keep these dual build modes working are significant. And of course we
want to get the meson build system working universally.
This commit removes the make distprep target altogether. The make
dist target continues to do its job, it just doesn't call distprep
anymore.
(*) - The tarball also contains the INSTALL file that is built at make
dist time, but not by distprep. This is unchanged for now.
The make maintainer-clean target, whose job it is to remove the
prebuilt files in addition to what make distclean does, is now just an
alias to make distprep. (In practice, it is probably obsolete given
that git clean is available.)
The following programs are now hard build requirements in configure
(they were already required by meson.build):
- bison
- flex
- perl
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/flat/e07408d9-e5f2-d9fd-5672-f53354e9305e@eisentraut.org
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Run pgindent, pgperltidy, and reformat-dat-files.
This set of diffs is a bit larger than typical. We've updated to
pg_bsd_indent 2.1.2, which properly indents variable declarations that
have multi-line initialization expressions (the continuation lines are
now indented one tab stop). We've also updated to perltidy version
20230309 and changed some of its settings, which reduces its desire to
add whitespace to lines to make assignments etc. line up. Going
forward, that should make for fewer random-seeming changes to existing
code.
Discussion: https://postgr.es/m/20230428092545.qfb3y5wcu4cm75ur@alvherre.pgsql
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This fixes many spelling mistakes in comments, but a few references to
invalid parameter names, function names and option names too in comments
and also some in string constants
Also, fix an #undef that was undefining the incorrect definition
Author: Alexander Lakhin
Reviewed-by: Justin Pryzby
Discussion: https://postgr.es/m/d5f68d19-c0fc-91a9-118d-7c6a5a3f5fad@gmail.com
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Unfortunately it turns out that the logfile-only option added in b9f8d1cbad7
is only available in openldap starting in 2.6.
Luckily the option to control the log level (loglevel/-s) have been around for
much longer. As it turns out loglevel/-s only control what goes into syslog,
not what ends up in the file specified with 'logfile' and stderr.
While we currently are specifying 'logfile', nothing ends up in it, as the
option only controls debug messages, and we didn't set a debug level. The
debug level can only be configured on the commandline and also prevents
forking. That'd require larger changes, so this commit doesn't tackle that
issue.
Specify the syslog level when starting slapd using -s, as that allows to
prevent all syslog messages if one uses '0' instead of 'none', while loglevel
doesn't prevent the first message.
Discussion: https://postgr.es/m/20230311233708.3yjdbjkly2q4gq2j@awork3.anarazel.de
Backpatch: 11-
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Until now the tests using slapd spammed syslog for every connection /
query. Use logfile-only to prevent syslog activity. Unfortunately that only
takes effect after logging the first message, but that's still much better
than the prior situation.
Discussion: https://postgr.es/m/20230311233708.3yjdbjkly2q4gq2j@awork3.anarazel.de
Backpatch: 11-
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The new connection parameter require_auth allows a libpq client to
define a list of comma-separated acceptable authentication types for use
with the server. There is no negotiation: if the server does not
present one of the allowed authentication requests, the connection
attempt done by the client fails.
The following keywords can be defined in the list:
- password, for AUTH_REQ_PASSWORD.
- md5, for AUTH_REQ_MD5.
- gss, for AUTH_REQ_GSS[_CONT].
- sspi, for AUTH_REQ_SSPI and AUTH_REQ_GSS_CONT.
- scram-sha-256, for AUTH_REQ_SASL[_CONT|_FIN].
- creds, for AUTH_REQ_SCM_CREDS (perhaps this should be removed entirely
now).
- none, to control unauthenticated connections.
All the methods that can be defined in the list can be negated, like
"!password", in which case the server must NOT use the listed
authentication type. The special method "none" allows/disallows the use
of unauthenticated connections (but it does not govern transport-level
authentication via TLS or GSSAPI).
Internally, the patch logic is tied to check_expected_areq(), that was
used for channel_binding, ensuring that an incoming request is
compatible with conn->require_auth. It also introduces a new flag,
conn->client_finished_auth, which is set by various authentication
routines when the client side of the handshake is finished. This
signals to check_expected_areq() that an AUTH_REQ_OK from the server is
expected, and allows the client to complain if the server bypasses
authentication entirely, with for example the reception of a too-early
AUTH_REQ_OK message.
Regression tests are added in authentication TAP tests for all the
keywords supported (except "creds", because it is around only for
compatibility reasons). A new TAP script has been added for SSPI, as
there was no script dedicated to it yet. It relies on SSPI being the
default authentication method on Windows, as set by pg_regress.
Author: Jacob Champion
Reviewed-by: Peter Eisentraut, David G. Johnston, Michael Paquier
Discussion: https://postgr.es/m/9e5a8ccddb8355ea9fa4b75a1e3a9edc88a70cd3.camel@vmware.com
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Commit c3382a3c3, which moved the implementation of PG_TEST_EXTRA
from src/test/Makefile into individual test scripts, broke the
directions given in the subdirectory README files about how to run
these tests by hand. Update. Also mention wal_consistency_checking
in recovery/README --- that omission isn't the fault of c3382a3c3,
but it's still an omission.
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This feature has not been covered in tests up to now.
John Naylor and Andrew Dunstan
Discussion: https://postgr.es/m/06005bfb-0fd7-9d08-e0e5-440f277b73b4@dunslane.net
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The code for detecting the Ldap installation and setting up a test
server is broken out into a reusable module that can be used for
additional tests to be added in later patches.
Discussion: https://postgr.es/m/06005bfb-0fd7-9d08-e0e5-440f277b73b4@dunslane.net
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Backpatch-through: 11
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Cirrus is about to shut down its macOS-on-Intel support, so it's time to
move our CI testing over to ARM instances. The Homebrew package manager
changed its default installation prefix for the new architecture, so a
couple of tests need tweaks to find binaries.
Back-patch to 15, where in-tree CI began.
Author: Justin Pryzby <pryzby@telsasoft.com>
Discussion: https://postgr.es/m/20221122225744.GF11463%40telsasoft.com
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The SSL test suite has a bunch of pre-existing certificates, so it's
better simply to use what we already have than generate new certificates
each time the LDAP tests are run.
Discussion: https://postgr.es/m/bc305c7a-f390-44f2-2e82-9bcaec6108da@dunslane.net
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Discussion: https://postgr.es/m/222b43a5-2fb3-2c1b-9cd0-375d376c8246@dunslane.net
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Various test suites use the "openssl" program as part of their setup.
There isn't a way to override which openssl program is to be used,
other than by fiddling with the path, perhaps. This has gotten
increasingly problematic because different versions of openssl have
different capabilities and do different things by default.
This patch checks for an openssl binary in configure and meson setup,
with appropriate ways to override it. This is similar to how "lz4"
and "zstd" are handled, for example. The meson build system actually
already did this, but the result was only used in some places. This
is now applied more uniformly.
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://www.postgresql.org/message-id/flat/dc638b75-a16a-007d-9e1c-d16ed6cf0ad2%40enterprisedb.com
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Autoconf is showing its age, fewer and fewer contributors know how to wrangle
it. Recursive make has a lot of hard to resolve dependency issues and slow
incremental rebuilds. Our home-grown MSVC build system is hard to maintain for
developers not using Windows and runs tests serially. While these and other
issues could individually be addressed with incremental improvements, together
they seem best addressed by moving to a more modern build system.
After evaluating different build system choices, we chose to use meson, to a
good degree based on the adoption by other open source projects.
We decided that it's more realistic to commit a relatively early version of
the new build system and mature it in tree.
This commit adds an initial version of a meson based build system. It supports
building postgres on at least AIX, FreeBSD, Linux, macOS, NetBSD, OpenBSD,
Solaris and Windows (however only gcc is supported on aix, solaris). For
Windows/MSVC postgres can now be built with ninja (faster, particularly for
incremental builds) and msbuild (supporting the visual studio GUI, but
building slower).
Several aspects (e.g. Windows rc file generation, PGXS compatibility, LLVM
bitcode generation, documentation adjustments) are done in subsequent commits
requiring further review. Other aspects (e.g. not installing test-only
extensions) are not yet addressed.
When building on Windows with msbuild, builds are slower when using a visual
studio version older than 2019, because those versions do not support
MultiToolTask, required by meson for intra-target parallelism.
The plan is to remove the MSVC specific build system in src/tools/msvc soon
after reaching feature parity. However, we're not planning to remove the
autoconf/make build system in the near future. Likely we're going to keep at
least the parts required for PGXS to keep working around until all supported
versions build with meson.
Some initial help for postgres developers is at
https://wiki.postgresql.org/wiki/Meson
With contributions from Thomas Munro, John Naylor, Stone Tickle and others.
Author: Andres Freund <andres@anarazel.de>
Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Author: Peter Eisentraut <peter@eisentraut.org>
Reviewed-By: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Discussion: https://postgr.es/m/20211012083721.hvixq4pnh2pixr3j@alap3.anarazel.de
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To avoid duplicating the PG_TEST_EXTRA logic in Makefiles into the upcoming
meson based build definition, move the checks into the the tests
themselves. That also has the advantage of making skipped tests visible.
Reviewed-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Author: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/7dae5979-c6c0-cec5-7a36-76a85aa8053d@enterprisedb.com
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Run pgindent, pgperltidy, and reformat-dat-files.
I manually fixed a couple of comments that pgindent uglified.
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This is a follow-up to commit 7dac61402 which removed a set of unused
modules from the TAP test.
The Config references in the pg_ctl and pg_rewind tests were removed
in commit 1c6d46293. Fcntl ':mode' and File::stat in the pg_ctl test
were added in c37b3d08c which was probably a leftover from an earlier
version of the patch, as the function using these was added to another
module in that commit.
The Config reference in the ldap test was added in ee56c3b21 which in
turn use $^O instead of interrogating Config.
Author: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
Discussion: https://postgr.es/m/87lewyqk45.fsf@wibble.ilmari.org
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Discussion: https://postgr.es/m/721828a7-3043-6803-a85b-da63538db3cc@enterprisedb.com
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The tests currently fail on unsupported operating systems, rather than getting
skipped. The ony reason this doesn't cause problems is that the tests aren't
run by default.
Discussion: https://postgr.es/m/721828a7-3043-6803-a85b-da63538db3cc@enterprisedb.com
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Rather than doing manual book keeping to plan the number of tests to run
in each TAP suite, conclude each run with done_testing() summing up the
the number of tests that ran. This removes the need for maintaning and
updating the plan count at the expense of an accurate count of remaining
during the test suite runtime.
This patch has been discussed a number of times, often in the context of
other patches which updates tests, so a larger number of discussions can
be found in the archives.
Reviewed-by: Julien Rouhaud <rjuju123@gmail.com>
Reviewed-by: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Discussion: https://postgr.es/m/DD399313-3D56-4666-8079-88949DAC870F@yesql.se
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Backpatch-through: 10
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Rearrange src/test/perl/README so that the first section is more
clearly "how to run these tests", and the rest "how to write new
tests". Add some basic info there about debugging test failures.
Then, add cross-refs to that READNE from other READMEs that
describe how to run TAP tests.
Per suggestion from Kevin Burke, though this is not his original
patch.
Discussion: https://postgr.es/m/CAKcy5eiSbwiQnmCfnOnDCVC7B8fYyev3E=6pvvECP9pLE-Fcuw@mail.gmail.com
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The five modules in our TAP test framework all had names in the top
level namespace. This is unwise because, even though we're not
exporting them to CPAN, the names can leak, for example if they are
exported by the RPM build process. We therefore move the modules to the
PostgreSQL::Test namespace. In the process PostgresNode is renamed to
Cluster, and TestLib is renamed to Utils. PostgresVersion becomes simply
PostgreSQL::Version, to avoid possible confusion about what it's the
version of.
Discussion: https://postgr.es/m/aede93a4-7d92-ef26-398f-5094944c2504@dunslane.net
Reviewed by Erik Rijkers and Michael Paquier
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ldapsearch's deprecated -h/-p arguments were removed, need to use -H now -
which has been around for over 20 years.
As perltidy insists on reflowing the parameters anyway, change order and
"phrasing" to yield a less confusing layout (per suggestion from Tom Lane).
Discussion: https://postgr.es/m/20211009233850.wvr6apcrw2ai6cnj@alap3.anarazel.de
Backpatch: 11-, where the tests were added.
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One of these was accidentally removed by c50624c. The others are
added by analogy.
Discussion: https://www.postgresql.org/message-id/ae1143fb-455c-c80f-ed66-78d45bd93303@enterprisedb.com
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Clients wanting to call get_free_port now need to do so via a qualified
name: PostgresNode::get_free_port().
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There is only one constructor now for PostgresNode, with the idiomatic
name 'new'. The method is not exported by the class, and must be called
as "PostgresNode->new('name',[args])". All the TAP tests that use
PostgresNode are modified accordingly. Third party scripts will need
adjusting, which is a fairly mechanical process (I just used a sed
script).
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The "authenticated identity" is the string used by an authentication
method to identify a particular user. In many common cases, this is the
same as the PostgreSQL username, but for some third-party authentication
methods, the identifier in use may be shortened or otherwise translated
(e.g. through pg_ident user mappings) before the server stores it.
To help administrators see who has actually interacted with the system,
this commit adds the capability to store the original identity when
authentication succeeds within the backend's Port, and generates a log
entry when log_connections is enabled. The log entries generated look
something like this (where a local user named "foouser" is connecting to
the database as the database user called "admin"):
LOG: connection received: host=[local]
LOG: connection authenticated: identity="foouser" method=peer (/data/pg_hba.conf:88)
LOG: connection authorized: user=admin database=postgres application_name=psql
Port->authn_id is set according to the authentication method:
bsd: the PostgreSQL username (aka the local username)
cert: the client's Subject DN
gss: the user principal
ident: the remote username
ldap: the final bind DN
pam: the PostgreSQL username (aka PAM username)
password (and all pw-challenge methods): the PostgreSQL username
peer: the peer's pw_name
radius: the PostgreSQL username (aka the RADIUS username)
sspi: either the down-level (SAM-compatible) logon name, if
compat_realm=1, or the User Principal Name if compat_realm=0
The trust auth method does not set an authenticated identity. Neither
does clientcert=verify-full.
Port->authn_id could be used for other purposes, like a superuser-only
extra column in pg_stat_activity, but this is left as future work.
PostgresNode::connect_{ok,fails}() have been modified to let tests check
the backend log files for required or prohibited patterns, using the
new log_like and log_unlike parameters. This uses a method based on a
truncation of the existing server log file, like issues_sql_like().
Tests are added to the ldap, kerberos, authentication and SSL test
suites.
Author: Jacob Champion
Reviewed-by: Stephen Frost, Magnus Hagander, Tom Lane, Michael Paquier
Discussion: https://postgr.es/m/c55788dd1773c521c862e8e0dddb367df51222be.camel@vmware.com
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This commit refactors more TAP tests to adapt with the recent
introduction of connect_ok() and connect_fails() in PostgresNode,
introduced by 0d1a3343. This changes the following test suites to use
the same code paths for connection checks:
- Kerberos
- LDAP
- SSL
- Authentication
Those routines are extended to be able to handle optional parameters
that are set depending on each suite's needs, as of:
- custom SQL query.
- expected stderr matching pattern.
- expected stdout matching pattern.
The new design is extensible with more parameters, and there are some
plans for those routines in the future with checks based on the contents
of the backend logs.
Author: Jacob Champion, Michael Paquier
Discussion: https://postgr.es/m/d17b919e27474abfa55d97786cb9cfadfe2b59e9.camel@vmware.com
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Backpatch-through: 9.5
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Instead of writing a query to psql's stdin, use -c. This avoids a
failure where psql exits before we write, seen a few times on the build
farm. Thanks to Tom Lane for the suggestion.
Back-patch to 11, where the LDAP tests arrived.
Reviewed-by: Noah Misch <noah@leadboat.com>
Discussion: https://postgr.es/m/CA%2BhUKGLFmW%2BHQYPeKiwSp5sdFFHtFViCpw4Mh6yAgEx74r5-Cw%40mail.gmail.com
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Backpatch-through: update all files in master, backpatch legal files through 9.4
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Don't just assume that the next port is free; it might not be, or
if we're really unlucky it might even be out of the TCP range.
Do it honestly with two get_free_port() calls instead.
This is surely a pretty low-probability problem, but I think it
explains a buildfarm failure seen today, so let's fix it.
Back-patch to v11 where this script was added.
Discussion: https://postgr.es/m/25124.1568052346@sss.pgh.pa.us
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openssl doesn't like lower case subject attribute names. Error observed
in buildfarm results.
Backpatch to release 11.
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src/test/kerberos and src/test/ldap try to run private authentication
servers, which of course might fail. The logs from these servers
were being dropped into the tmp_check/ subdirectory, but they should
be put in tmp_check/log/, because the buildfarm will only capture
log files in that subdirectory. Without the log output there's
little hope of diagnosing buildfarm failures related to these servers.
Backpatch to v11 where these test suites were added.
Discussion: https://postgr.es/m/16017.1565047605@sss.pgh.pa.us
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src/test/kerberos and src/test/ldap need to run a private authentication
server of the relevant type, for which they need a free TCP port.
They were just picking a random port number in 48K-64K, which works
except when something's already using the particular port. Notably,
the probability of failure rises dramatically if one simply runs those
tests in a tight loop, because each test cycle leaves behind a bunch of
high ports that are transiently in TIME_WAIT state.
To fix, split out the code that PostgresNode.pm already had for
identifying a free TCP port number, so that it can be invoked to choose
a port for the KDC or LDAP server. This isn't 100% bulletproof, since
conceivably something else on the machine could grab the port between
the time we check and the time we actually start the server. But that's
a pretty short window, so in practice this should be good enough.
Back-patch to v11 where these test suites were added.
Patch by me, reviewed by Andrew Dunstan.
Discussion: https://postgr.es/m/3397.1564872168@sss.pgh.pa.us
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After starting slapd, wait until it can accept a connection before
beginning the real test work. This avoids occasional test failures.
Back-patch to 11, where the LDAP tests arrived.
Author: Thomas Munro
Reviewed-by: Michael Paquier
Discussion: https://postgr.es/m/20190719033013.GI1859%40paquier.xyz
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Previously the test knew how to find an OpenLDAP installation at the
paths used by Homebrew. Add the MacPorts paths too.
Author: Thomas Munro
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/CA%2BhUKGKrjGS7sO4jc53gp3qipCtEvThtdP_%3DzoixgX5ZBq4Nbw%40mail.gmail.com
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Backpatch-through: certain files through 9.4
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