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# Copyright (c) 2021-2023, PostgreSQL Global Development Group
use strict;
use warnings;
use FindBin;
use lib "$FindBin::RealBin/..";
use File::Copy;
use File::Basename;
use LdapServer;
use PostgreSQL::Test::Utils;
use PostgreSQL::Test::Cluster;
use Test::More;
if ($ENV{with_ldap} ne 'yes')
{
plan skip_all => 'LDAP not supported by this build';
}
elsif ($ENV{PG_TEST_EXTRA} !~ /\bldap\b/)
{
plan skip_all =>
'Potentially unsafe test LDAP not enabled in PG_TEST_EXTRA';
}
elsif (!$LdapServer::setup)
{
plan skip_all => $LdapServer::setup_error;
}
note "setting up LDAP server";
my $ldap_rootpw = 'secret';
my $ldap = LdapServer->new($ldap_rootpw, 'anonymous'); # use anonymous auth
$ldap->ldapadd_file('authdata.ldif');
$ldap->ldapsetpw('uid=test1,dc=example,dc=net', 'secret1');
$ldap->ldapsetpw('uid=test2,dc=example,dc=net', 'secret2');
my ($ldap_server, $ldap_port, $ldaps_port, $ldap_url,
$ldaps_url, $ldap_basedn, $ldap_rootdn
) = $ldap->prop(qw(server port s_port url s_url basedn rootdn));
# don't bother to check the server's cert (though perhaps we should)
$ENV{'LDAPTLS_REQCERT'} = "never";
note "setting up PostgreSQL instance";
my $node = PostgreSQL::Test::Cluster->new('node');
$node->init;
$node->append_conf('postgresql.conf', "log_connections = on\n");
$node->start;
$node->safe_psql('postgres', 'CREATE USER test0;');
$node->safe_psql('postgres', 'CREATE USER test1;');
$node->safe_psql('postgres', 'CREATE USER "test2@example.net";');
note "running tests";
sub test_access
{
local $Test::Builder::Level = $Test::Builder::Level + 1;
my ($node, $role, $expected_res, $test_name, %params) = @_;
my $connstr = "user=$role";
if ($expected_res eq 0)
{
$node->connect_ok($connstr, $test_name, %params);
}
else
{
# No checks of the error message, only the status code.
$node->connect_fails($connstr, $test_name, %params);
}
}
note "simple bind";
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf',
qq{local all all ldap ldapserver=$ldap_server ldapport=$ldap_port ldapprefix="uid=" ldapsuffix=",dc=example,dc=net"}
);
$node->restart;
$ENV{"PGPASSWORD"} = 'wrong';
test_access(
$node, 'test0', 2,
'simple bind authentication fails if user not found in LDAP',
log_unlike => [qr/connection authenticated:/]);
test_access(
$node, 'test1', 2,
'simple bind authentication fails with wrong password',
log_unlike => [qr/connection authenticated:/]);
$ENV{"PGPASSWORD"} = 'secret1';
test_access(
$node, 'test1', 0,
'simple bind authentication succeeds',
log_like => [
qr/connection authenticated: identity="uid=test1,dc=example,dc=net" method=ldap/
],);
# require_auth=password should complete successfully; other methods should fail.
$node->connect_ok("user=test1 require_auth=password",
"password authentication required, works with ldap auth");
$node->connect_fails("user=test1 require_auth=scram-sha-256",
"SCRAM authentication required, fails with ldap auth");
note "search+bind";
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf',
qq{local all all ldap ldapserver=$ldap_server ldapport=$ldap_port ldapbasedn="$ldap_basedn"}
);
$node->restart;
$ENV{"PGPASSWORD"} = 'wrong';
test_access($node, 'test0', 2,
'search+bind authentication fails if user not found in LDAP');
test_access($node, 'test1', 2,
'search+bind authentication fails with wrong password');
$ENV{"PGPASSWORD"} = 'secret1';
test_access(
$node, 'test1', 0,
'search+bind authentication succeeds',
log_like => [
qr/connection authenticated: identity="uid=test1,dc=example,dc=net" method=ldap/
],);
note "multiple servers";
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf',
qq{local all all ldap ldapserver="$ldap_server $ldap_server" ldapport=$ldap_port ldapbasedn="$ldap_basedn"}
);
$node->restart;
$ENV{"PGPASSWORD"} = 'wrong';
test_access($node, 'test0', 2,
'search+bind authentication fails if user not found in LDAP');
test_access($node, 'test1', 2,
'search+bind authentication fails with wrong password');
$ENV{"PGPASSWORD"} = 'secret1';
test_access($node, 'test1', 0, 'search+bind authentication succeeds');
note "LDAP URLs";
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf',
qq{local all all ldap ldapurl="$ldap_url/$ldap_basedn?uid?sub"});
$node->restart;
$ENV{"PGPASSWORD"} = 'wrong';
test_access($node, 'test0', 2,
'search+bind with LDAP URL authentication fails if user not found in LDAP'
);
test_access($node, 'test1', 2,
'search+bind with LDAP URL authentication fails with wrong password');
$ENV{"PGPASSWORD"} = 'secret1';
test_access($node, 'test1', 0,
'search+bind with LDAP URL authentication succeeds');
note "search filters";
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf',
qq{local all all ldap ldapserver=$ldap_server ldapport=$ldap_port ldapbasedn="$ldap_basedn" ldapsearchfilter="(|(uid=\$username)(mail=\$username))"}
);
$node->restart;
$ENV{"PGPASSWORD"} = 'secret1';
test_access(
$node, 'test1', 0,
'search filter finds by uid',
log_like => [
qr/connection authenticated: identity="uid=test1,dc=example,dc=net" method=ldap/
],);
$ENV{"PGPASSWORD"} = 'secret2';
test_access(
$node,
'test2@example.net',
0,
'search filter finds by mail',
log_like => [
qr/connection authenticated: identity="uid=test2,dc=example,dc=net" method=ldap/
],);
note "search filters in LDAP URLs";
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf',
qq{local all all ldap ldapurl="$ldap_url/$ldap_basedn??sub?(|(uid=\$username)(mail=\$username))"}
);
$node->restart;
$ENV{"PGPASSWORD"} = 'secret1';
test_access($node, 'test1', 0, 'search filter finds by uid');
$ENV{"PGPASSWORD"} = 'secret2';
test_access($node, 'test2@example.net', 0, 'search filter finds by mail');
# This is not documented: You can combine ldapurl and other ldap*
# settings. ldapurl is always parsed first, then the other settings
# override. It might be useful in a case like this.
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf',
qq{local all all ldap ldapurl="$ldap_url/$ldap_basedn??sub" ldapsearchfilter="(|(uid=\$username)(mail=\$username))"}
);
$node->restart;
$ENV{"PGPASSWORD"} = 'secret1';
test_access($node, 'test1', 0, 'combined LDAP URL and search filter');
note "diagnostic message";
# note bad ldapprefix with a question mark that triggers a diagnostic message
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf',
qq{local all all ldap ldapserver=$ldap_server ldapport=$ldap_port ldapprefix="?uid=" ldapsuffix=""}
);
$node->restart;
$ENV{"PGPASSWORD"} = 'secret1';
test_access($node, 'test1', 2, 'any attempt fails due to bad search pattern');
note "TLS";
# request StartTLS with ldaptls=1
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf',
qq{local all all ldap ldapserver=$ldap_server ldapport=$ldap_port ldapbasedn="$ldap_basedn" ldapsearchfilter="(uid=\$username)" ldaptls=1}
);
$node->restart;
$ENV{"PGPASSWORD"} = 'secret1';
test_access($node, 'test1', 0, 'StartTLS');
# request LDAPS with ldapscheme=ldaps
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf',
qq{local all all ldap ldapserver=$ldap_server ldapscheme=ldaps ldapport=$ldaps_port ldapbasedn="$ldap_basedn" ldapsearchfilter="(uid=\$username)"}
);
$node->restart;
$ENV{"PGPASSWORD"} = 'secret1';
test_access($node, 'test1', 0, 'LDAPS');
# request LDAPS with ldapurl=ldaps://...
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf',
qq{local all all ldap ldapurl="$ldaps_url/$ldap_basedn??sub?(uid=\$username)"}
);
$node->restart;
$ENV{"PGPASSWORD"} = 'secret1';
test_access($node, 'test1', 0, 'LDAPS with URL');
# bad combination of LDAPS and StartTLS
unlink($node->data_dir . '/pg_hba.conf');
$node->append_conf('pg_hba.conf',
qq{local all all ldap ldapurl="$ldaps_url/$ldap_basedn??sub?(uid=\$username)" ldaptls=1}
);
$node->restart;
$ENV{"PGPASSWORD"} = 'secret1';
test_access($node, 'test1', 2, 'bad combination of LDAPS and StartTLS');
done_testing();
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