Re: ldap tls test fails in some environments

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От Thomas Munro
Тема Re: ldap tls test fails in some environments
Дата
Msg-id CA+hUKG+_n-zt1EAZaZfojjXh9StROu+880pRrXVvtQTWEC_UMg@mail.gmail.com
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Ответ на ldap tls test fails in some environments  (Christoph Berg <myon@debian.org>)
Ответы Re: ldap tls test fails in some environments  (Christoph Berg <myon@debian.org>)
Список pgsql-hackers
On Thu, May 14, 2020 at 4:05 AM Christoph Berg <myon@debian.org> wrote:
> Some other problem emerged here in the ldap test:

Hi Christoph,

> 17:28:59 Data directory: /<<PKGBUILDDIR>>/build/src/test/ldap/tmp_check/t_001_auth_node_data/pgdata

I know nothing about Debian package building so I could be missing
something about how this works, but I wonder if our script variable
handling is hygienic enough for paths like that.  Let's see... I get
an error due to that when I run "make -C src/test/ldap check" from a
source tree under "/<<PKGBUILDDIR>>/build":

sh: 1: cannot create /build/src/test/ldap/tmp_check/slapd.pid:
Directory nonexistent

That's fixable with:

-       kill 'INT', `cat $slapd_pidfile` if -f $slapd_pidfile;
+       kill 'INT', `cat "$slapd_pidfile"` if -f "$slapd_pidfile";

That's a side issue, though.

> 17:28:59 # TLS
> 17:28:59 not ok 19 - StartTLS
> 17:28:59 not ok 20 - LDAPS
> 17:28:59 not ok 21 - LDAPS with URL

> It consistently fails on the build server, but works on my notebook.
> Maybe that simply means slapd is crashing, but there's no slapd
> output. Would it be possible to start slapd with "-d 255", even if
> that means it doesn't background itself?

That'd require more scripting to put it in the background...

> 17:28:59 2020-05-13 15:28:58.479 UTC [31584] [unknown] LOG:  could not start LDAP TLS session: Connect error

> 17:28:59 2020-05-13 15:28:58.728 UTC [31595] [unknown] LOG:  could not perform initial LDAP bind for ldapbinddn "" on
server"localhost": Can't contact LDAP server
 

Hmm, I get exactly the same errors as this if I comment out the
following part of the test script:

  # don't bother to check the server's cert (though perhaps we should)
  append_to_file(
      $ldap_conf,
      qq{TLS_REQCERT never
  });

That's a file that we point to with the environment variable LDAPCONF.
The man page for ldap.conf says:

       Thus the following files and variables are read, in order:
           variable     $LDAPNOINIT, and if that is not set:
           system file  /etc/ldap/ldap.conf,
           user files   $HOME/ldaprc,  $HOME/.ldaprc,  ./ldaprc,
           system file  $LDAPCONF,
           user files   $HOME/$LDAPRC, $HOME/.$LDAPRC, ./$LDAPRC,
           variables    $LDAP<uppercase option name>.
       Settings late in the list override earlier ones.

This leads me to suspect that something in your build server's
environment that comes later in that list is overridding the
TLS_REQCERT setting.  If that's the explanation, perhaps we should do
this, which seems to work OK on my system, since it comes last in the
list:

-$ENV{'LDAPCONF'}   = $ldap_conf;
+$ENV{'LDAPTLS_REQCERT'} = "never";



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