198 lines
4.9 KiB
Perl
198 lines
4.9 KiB
Perl
use strict;
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use warnings;
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use TestLib;
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use PostgresNode;
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use Test::More;
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use File::Path 'remove_tree';
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if ($ENV{with_gssapi} eq 'yes')
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{
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plan tests => 5;
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}
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else
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{
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plan skip_all => 'GSSAPI/Kerberos not supported by this build';
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}
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my ($krb5_bin_dir, $krb5_sbin_dir);
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if ($^O eq 'darwin')
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{
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$krb5_bin_dir = '/usr/local/opt/krb5/bin';
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$krb5_sbin_dir = '/usr/local/opt/krb5/sbin';
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}
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elsif ($^O eq 'freebsd')
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{
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$krb5_bin_dir = '/usr/local/bin';
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$krb5_sbin_dir = '/usr/local/sbin';
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}
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elsif ($^O eq 'linux')
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{
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$krb5_sbin_dir = '/usr/sbin';
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}
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my $krb5_config = 'krb5-config';
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my $kinit = 'kinit';
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my $kdb5_util = 'kdb5_util';
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my $kadmin_local = 'kadmin.local';
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my $krb5kdc = 'krb5kdc';
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if ($krb5_bin_dir && -d $krb5_bin_dir)
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{
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$krb5_config = $krb5_bin_dir . '/' . $krb5_config;
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$kinit = $krb5_bin_dir . '/' . $kinit;
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}
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if ($krb5_sbin_dir && -d $krb5_sbin_dir)
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{
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$kdb5_util = $krb5_sbin_dir . '/' . $kdb5_util;
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$kadmin_local = $krb5_sbin_dir . '/' . $kadmin_local;
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$krb5kdc = $krb5_sbin_dir . '/' . $krb5kdc;
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}
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my $host = 'auth-test-localhost.postgresql.example.com';
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my $hostaddr = '127.0.0.1';
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my $realm = 'EXAMPLE.COM';
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my $krb5_conf = "${TestLib::tmp_check}/krb5.conf";
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my $kdc_conf = "${TestLib::tmp_check}/kdc.conf";
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my $krb5_log = "${TestLib::tmp_check}/krb5libs.log";
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my $kdc_log = "${TestLib::tmp_check}/krb5kdc.log";
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my $kdc_port = int(rand() * 16384) + 49152;
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my $kdc_datadir = "${TestLib::tmp_check}/krb5kdc";
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my $kdc_pidfile = "${TestLib::tmp_check}/krb5kdc.pid";
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my $keytab = "${TestLib::tmp_check}/krb5.keytab";
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note "setting up Kerberos";
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my ($stdout, $krb5_version);
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run_log [ $krb5_config, '--version' ], '>', \$stdout
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or BAIL_OUT("could not execute krb5-config");
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BAIL_OUT("Heimdal is not supported") if $stdout =~ m/heimdal/;
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$stdout =~ m/Kerberos 5 release ([0-9]+\.[0-9]+)/
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or BAIL_OUT("could not get Kerberos version");
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$krb5_version = $1;
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append_to_file(
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$krb5_conf,
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qq![logging]
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default = FILE:$krb5_log
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kdc = FILE:$kdc_log
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[libdefaults]
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default_realm = $realm
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[realms]
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$realm = {
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kdc = $hostaddr:$kdc_port
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}!);
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append_to_file(
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$kdc_conf,
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qq![kdcdefaults]
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!);
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# For new-enough versions of krb5, use the _listen settings rather
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# than the _ports settings so that we can bind to localhost only.
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if ($krb5_version >= 1.15)
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{
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append_to_file(
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$kdc_conf,
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qq!kdc_listen = $hostaddr:$kdc_port
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kdc_tcp_listen = $hostaddr:$kdc_port
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!);
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}
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else
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{
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append_to_file(
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$kdc_conf,
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qq!kdc_ports = $kdc_port
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kdc_tcp_ports = $kdc_port
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!);
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}
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append_to_file(
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$kdc_conf,
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qq!
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[realms]
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$realm = {
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database_name = $kdc_datadir/principal
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admin_keytab = FILE:$kdc_datadir/kadm5.keytab
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acl_file = $kdc_datadir/kadm5.acl
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key_stash_file = $kdc_datadir/_k5.$realm
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}!);
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remove_tree $kdc_datadir;
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mkdir $kdc_datadir or die;
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$ENV{'KRB5_CONFIG'} = $krb5_conf;
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$ENV{'KRB5_KDC_PROFILE'} = $kdc_conf;
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my $service_principal = "$ENV{with_krb_srvnam}/$host";
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system_or_bail $kdb5_util, 'create', '-s', '-P', 'secret0';
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my $test1_password = 'secret1';
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system_or_bail $kadmin_local, '-q', "addprinc -pw $test1_password test1";
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system_or_bail $kadmin_local, '-q', "addprinc -randkey $service_principal";
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system_or_bail $kadmin_local, '-q', "ktadd -k $keytab $service_principal";
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system_or_bail $krb5kdc, '-P', $kdc_pidfile;
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END
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{
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kill 'INT', `cat $kdc_pidfile` if -f $kdc_pidfile;
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}
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note "setting up PostgreSQL instance";
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my $node = get_new_node('node');
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$node->init;
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$node->append_conf('postgresql.conf', "listen_addresses = 'localhost'");
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$node->append_conf('postgresql.conf', "krb_server_keyfile = '$keytab'");
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$node->start;
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$node->safe_psql('postgres', 'CREATE USER test1;');
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note "running tests";
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sub test_access
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{
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my ($node, $gssencmode, $expected_res, $test_name) = @_;
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my $res = $node->psql(
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"postgres",
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"SELECT 1",
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extra_params => [
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"-d",
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$node->connstr("postgres") . " host=$host hostaddr=$hostaddr gssencmode=$gssencmode",
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"-U", "test1",
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]);
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is($res, $expected_res, $test_name);
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return;
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}
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unlink($node->data_dir . "/pg_ident.conf");
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$node->append_conf("pg_ident.conf", 'mymap /^(.*)@EXAMPLE.COM$ \1');
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run_log [ $kinit, 'test1' ], \$test1_password or BAIL_OUT($?);
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unlink($node->data_dir . '/pg_hba.conf');
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$node->append_conf('pg_hba.conf',
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qq{hostgssenc all all $hostaddr/32 gss map=mymap});
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$node->restart;
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test_access($node, "require", 0, "GSS-encrypted access");
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test_access($node, "disable", 2, "GSS encryption disabled");
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unlink($node->data_dir . "/pg_hba.conf");
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$node->append_conf("pg_hba.conf", qq{hostgssenc all all $hostaddr/32 trust});
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$node->restart;
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test_access($node, "require", 0, "GSS encryption without auth");
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unlink($node->data_dir . "/pg_hba.conf");
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$node->append_conf("pg_hba.conf",
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qq{hostnogssenc all all localhost gss map=mymap});
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$node->restart;
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test_access($node, "prefer", 0, "GSS unencrypted fallback");
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# Check that the client can prevent fallback.
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test_access($node, "require", 2, "GSS unencrypted fallback prevention");
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