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|
#!/usr/bin/perl -w
use lib (qw|../lib ../../IPTables-Parse/lib ../../IPTables-Parse.git/lib|);
use Data::Dumper;
use Getopt::Long 'GetOptions';
use strict;
eval {
require IPTables::ChainMgr;
};
die "[*] Adjust 'use lib' statement to include ",
"directory where modules live: $@" if $@;
#==================== config =====================
my $iptables_bin = '/usr/sbin/iptables';
my $ip6tables_bin = '/usr/sbin/ip6tables';
my $fw_cmd_bin = '/bin/firewall-cmd';
my %test_chains = (
'filter' => [
{'chain' => 'CHAINMGR', 'jump_from' => 'INPUT'},
{'chain' => 'CHAINMGR', 'jump_from' => 'FORWARD'},
### iptables allows odd chain names
{'chain' => 'SC~!@#^%&$*-[]+={}-test', 'jump_from' => 'INPUT'}
],
'mangle' => [
{'chain' => 'CHAINMGR', 'jump_from' => 'INPUT'},
{'chain' => 'CHAINMGR', 'jump_from' => 'FORWARD'},
{'chain' => 'SC~!@#^%&$*-[]+={}-test', 'jump_from' => 'INPUT'}
],
'raw' => [
{'chain' => 'CHAINMGR', 'jump_from' => 'PREROUTING'},
],
'nat' => [
{'chain' => 'CHAINMGR', 'jump_from' => 'PREROUTING'},
],
);
### normalization will produce the correct network addresses ("10.1.2.3/24" is
### deliberate)
my $ipv4_src = '10.1.2.3/24';
my $ipv4_dst = '192.168.1.2';
my $ipv6_src = 'fe80::200:f8ff:fe21:67cf';
my $ipv6_dst = '0000:0000:00AA:0000:0000:AA00:0000:0001/64';
my $mac_source = 'ff:ff:ff:c6:33:58';
my $logfile = 'test.log';
my $PRINT_LEN = 68;
my $chain_past_end = 1000;
#================== end config ===================
#
my $exit_on_first_failure = 0;
my $verbose = 0;
my $debug = 0;
my $help = 0;
die "[*] See '$0 -h' for usage information" unless (GetOptions(
'verbose' => \$verbose,
'exit-on-first-failure' => \$exit_on_first_failure,
'debug' => \$debug,
'help' => \$help,
));
&usage() if $help;
my %ipt_opts = (
'debug' => $debug,
'verbose' => $verbose
);
my %ipt6_opts = (
'use_ipv6' => 1,
'debug' => $debug,
'verbose' => $verbose
);
my %iptables_chains = (
'mangle' => [qw/PREROUTING INPUT OUTPUT FORWARD POSTROUTING/],
'raw' => [qw/PREROUTING OUTPUT/],
'filter' => [qw/INPUT OUTPUT FORWARD/],
'nat' => [qw/PREROUTING OUTPUT POSTROUTING/]
);
my %ip6tables_chains = (
'mangle' => [qw/PREROUTING INPUT OUTPUT FORWARD POSTROUTING/],
'raw' => [qw/PREROUTING OUTPUT/],
'filter' => [qw/INPUT OUTPUT FORWARD/],
);
my $passed = 0;
my $failed = 0;
my $executed = 0;
&init();
&iptables_tests();
&ip6tables_tests();
&logr("\n[+] passed/failed/executed: $passed/$failed/$executed tests\n\n");
exit 0;
sub iptables_tests() {
&logr("\n[+] Running $iptables_bin tests...\n");
my $ipt_obj = IPTables::ChainMgr->new(%ipt_opts)
or die "[*] Could not acquire IPTables::ChainMgr object";
### built-in chains
&chain_exists_tests($ipt_obj, \%iptables_chains);
&test_cycle($ipt_obj);
return;
}
sub ip6tables_tests() {
&logr("\n[+] Running $ip6tables_bin tests...\n");
my $ipt_obj = IPTables::ChainMgr->new(%ipt6_opts)
or die "[*] Could not acquire IPTables::ChainMgr object";
### built-in chains
&chain_exists_tests($ipt_obj, \%ip6tables_chains);
&test_cycle($ipt_obj);
return;
}
sub test_cycle() {
my $ipt_obj = shift;
for my $table (keys %test_chains) {
for my $hr (@{$test_chains{$table}}) {
my $chain = $hr->{'chain'};
my $jump_from_chain = $hr->{'jump_from'};
&custom_chain_init($ipt_obj, $table,
$jump_from_chain, $chain);
### create/delete chain cycle
&chain_does_not_exist_test($ipt_obj, $table, $chain);
&create_chain_test($ipt_obj, $table, $chain);
&flush_chain_test($ipt_obj, $table, $chain);
&delete_chain_test($ipt_obj, $table, $jump_from_chain,
$chain);
### create chain, add rules, delete chain cycle
&chain_does_not_exist_test($ipt_obj, $table, $chain);
&create_chain_test($ipt_obj, $table, $chain);
&add_rules_tests($ipt_obj, $table, $chain);
&flush_chain_test($ipt_obj, $table, $chain);
&delete_chain_test($ipt_obj, $table, $jump_from_chain,
$chain);
### create chain add rules, add jump rule, delete chain cycle
&chain_does_not_exist_test($ipt_obj, $table, $chain);
&create_chain_test($ipt_obj, $table, $chain);
&add_rules_tests($ipt_obj, $table, $chain);
&add_extended_rules_tests($ipt_obj, $table, $chain);
&add_jump_rule_test($ipt_obj, $table, $chain, $jump_from_chain);
&flush_chain_test($ipt_obj, $table, $chain);
&set_chain_policy_test($ipt_obj, $table, $chain);
&delete_chain_test($ipt_obj, $table, $jump_from_chain,
$chain);
}
}
return;
}
sub chain_exists_tests() {
my ($ipt_obj, $tables_chains_hr) = @_;
for my $table (keys %$tables_chains_hr) {
for my $chain (@{$tables_chains_hr->{$table}}) {
&dots_print("chain_exists(): $table $chain");
my ($rv, $out_ar, $err_ar) = $ipt_obj->chain_exists($table, $chain);
&pass_fail($rv, " $table chain $chain does not exist.");
}
}
return;
}
sub flush_chain_test() {
my ($ipt_obj, $table, $chain) = @_;
&dots_print("flush_chain(): $table $chain");
my ($rv, $out_ar, $err_ar) = $ipt_obj->flush_chain($table, $chain);
&pass_fail($rv, " Could not flush $table $chain chain.");
return;
}
sub set_chain_policy_test() {
my ($ipt_obj, $table, $chain) = @_;
for my $target (qw/DROP ACCEPT/) {
&dots_print("cannot set chain policy: $table $chain $target");
my ($rv, $out_ar, $err_ar) = $ipt_obj->set_chain_policy($table,
$chain, $target);
if ($rv) { ### bad, cannot set policy for a non built-in chain
$rv = 0;
} else {
$rv = 1;
}
&pass_fail($rv, " Was able to set $table $chain chain " .
"policy to $target, should only be able to do this for built-in chains.");
}
return;
}
sub add_jump_rule_test() {
my ($ipt_obj, $table, $chain, $jump_from_chain) = @_;
&dots_print("add_jump_rule(): $table $jump_from_chain -> $chain ");
my ($rv, $out_ar, $err_ar) = $ipt_obj->add_jump_rule($table,
$jump_from_chain, 1, $chain);
&pass_fail($rv, " Could not add jump rule.");
my $ip_any_net = '0.0.0.0/0';
$ip_any_net = '::/0' if $ipt_obj->{'_ipv6'};
&dots_print("find jump rule: $table $jump_from_chain -> $chain ");
my ($rule_position, $num_chain_rules) = $ipt_obj->find_ip_rule($ip_any_net,
$ip_any_net, $table, $jump_from_chain, $chain, {});
&pass_fail($rule_position, " Could not find jump rule.");
return;
}
sub add_rules_tests() {
my ($ipt_obj, $table, $chain) = @_;
my $src_ip = $ipt_obj->normalize_net($ipv4_src);
my $dst_ip = $ipt_obj->normalize_net($ipv4_dst);
if ($ipt_obj->{'_ipv6'}) {
$src_ip = $ipt_obj->normalize_net($ipv6_src);
$dst_ip = $ipt_obj->normalize_net($ipv6_dst);
}
for my $target (qw/LOG ACCEPT RETURN/) {
&dots_print("add_ip_rule(): $table $chain $src_ip -> $dst_ip $target ");
my ($rv, $out_ar, $err_ar) = $ipt_obj->add_ip_rule($src_ip,
$dst_ip, $chain_past_end, $table, $chain, $target, {});
&pass_fail($rv, " Could not add $src_ip -> $dst_ip $target rule.");
&dots_print("find rule: $table $chain $src_ip -> $dst_ip $target ");
my ($rule_position, $num_chain_rules) = $ipt_obj->find_ip_rule($src_ip,
$dst_ip, $table, $chain, $target, {'normalize' => 1});
&pass_fail($rule_position, " Could not find $src_ip -> $dst_ip $target rule.");
}
for my $target (qw/LOG ACCEPT RETURN/) {
&dots_print("append_ip_rule(): $table $chain $src_ip -> $dst_ip $target ");
my ($rv, $out_ar, $err_ar) = $ipt_obj->add_ip_rule($src_ip,
$dst_ip, -1, $table, $chain, $target, {});
&pass_fail($rv, " Could not append $src_ip -> $dst_ip $target rule.");
&dots_print("find rule: $table $chain $src_ip -> $dst_ip $target ");
my ($rule_position, $num_chain_rules) = $ipt_obj->find_ip_rule($src_ip,
$dst_ip, $table, $chain, $target, {'normalize' => 1});
&pass_fail($rule_position, " Could not find $src_ip -> $dst_ip $target rule.");
}
return;
}
sub add_extended_rules_tests() {
my ($ipt_obj, $table, $chain) = @_;
### for any -> any testing
my $ip_any_net = '0.0.0.0/0';
$ip_any_net = '::/0' if $ipt_obj->{'_ipv6'};
my $src_ip = $ipt_obj->normalize_net($ipv4_src);
my $dst_ip = $ipt_obj->normalize_net($ipv4_dst);
if ($ipt_obj->{'_ipv6'}) {
$src_ip = $ipt_obj->normalize_net($ipv6_src);
$dst_ip = $ipt_obj->normalize_net($ipv6_dst);
}
for my $target (qw/LOG ACCEPT RETURN/) {
### TCP
&dots_print("add_ext_ip_rules(): $table $chain TCP $src_ip(0) -> $dst_ip(80) $target ");
my ($rv, $out_ar, $err_ar) = $ipt_obj->add_ip_rule($src_ip,
$dst_ip, $chain_past_end, $table, $chain, $target,
{'protocol' => 'tcp', 's_port' => 0, 'd_port' => 80});
&pass_fail($rv, " Could not add TCP $src_ip(0) -> $dst_ip(80) $target rule");
&dots_print("find ext rule: $table $chain TCP $src_ip(0) -> $dst_ip(80) $target ");
my ($rule_position, $num_chain_rules) = $ipt_obj->find_ip_rule($src_ip,
$dst_ip, $table, $chain, $target,
{'normalize' => 1, 'protocol' => 'tcp', 's_port' => 0,
'd_port' => 80});
&pass_fail($rule_position, " Could not find TCP $src_ip(0) -> $dst_ip(80) $target rule");
### TCP + state tracking
&dots_print("add_ext_ip_rules(): $table $chain TCP $src_ip(0) " .
"-> $dst_ip(80) state ESTABLISHED,RELATED $target ");
($rv, $out_ar, $err_ar) = $ipt_obj->add_ip_rule($src_ip,
$dst_ip, $chain_past_end, $table, $chain, $target,
{'protocol' => 'tcp', 's_port' => 0, 'd_port' => 80,
'state' => 'ESTABLISHED,RELATED'});
&pass_fail($rv, " Could not add TCP $src_ip(0) -> $dst_ip(80) " .
"state ESTABLISHED,RELATED $target rule");
&dots_print("find ext rule: $table $chain TCP $src_ip(0) " .
"-> $dst_ip(80) state ESTABLISHED,RELATED $target ");
($rule_position, $num_chain_rules) = $ipt_obj->find_ip_rule($src_ip,
$dst_ip, $table, $chain, $target,
{'normalize' => 1, 'protocol' => 'tcp', 's_port' => 0,
'd_port' => 80, 'state' => 'ESTABLISHED,RELATED'});
&pass_fail($rule_position, " Could not find TCP $src_ip(0) -> " .
"$dst_ip(80) state ESTABLISHED,RELATED $target rule");
### TCP + ctstate tracking
&dots_print("add_ext_ip_rules(): $table $chain TCP " .
"$src_ip(0) -> $dst_ip(80) ctstate ESTABLISHED,RELATED $target ");
($rv, $out_ar, $err_ar) = $ipt_obj->add_ip_rule($src_ip,
$dst_ip, $chain_past_end, $table, $chain, $target,
{'protocol' => 'tcp', 's_port' => 0, 'd_port' => 80,
'ctstate' => 'ESTABLISHED,RELATED'});
&pass_fail($rv, " Could not add TCP $src_ip(0) -> $dst_ip(80) " .
"ctstate ESTABLISHED,RELATED $target rule");
&dots_print("find ext rule: $table $chain TCP $src_ip(0) " .
"-> $dst_ip(80) ctstate ESTABLISHED,RELATED $target ");
($rule_position, $num_chain_rules) = $ipt_obj->find_ip_rule($src_ip,
$dst_ip, $table, $chain, $target,
{'normalize' => 1, 'protocol' => 'tcp', 's_port' => 0,
'd_port' => 80, 'ctstate' => 'ESTABLISHED,RELATED'});
&pass_fail($rule_position, " Could not find TCP $src_ip(0) -> " .
"$dst_ip(80) ctstate ESTABLISHED,RELATED $target rule");
### all protocols and IP's, MAC source
&dots_print("add_ext_ip_rules(): $table $chain $ip_any_net " .
"-> $ip_any_net $target mac_source $mac_source ");
($rv, $out_ar, $err_ar) = $ipt_obj->add_ip_rule($ip_any_net,
$ip_any_net, $chain_past_end, $table, $chain, $target,
{'mac_source' => $mac_source});
&pass_fail($rv, " Could not add $ip_any_net -> $ip_any_net " .
"$target mac_source $mac_source");
&dots_print("find ext rule: $table $chain $ip_any_net " .
"-> $ip_any_net $target mac_source $mac_source ");
($rule_position, $num_chain_rules) = $ipt_obj->find_ip_rule($ip_any_net,
$ip_any_net, $table, $chain, $target,
{'mac_source' => $mac_source});
&pass_fail($rule_position, " Could not find $ip_any_net " .
"-> $ip_any_net $target mac_source $mac_source");
### TCP + mac source
&dots_print("add_ext_ip_rules(): $table $chain TCP " .
"$src_ip(0) -> $dst_ip(80) $target mac_source $mac_source ");
($rv, $out_ar, $err_ar) = $ipt_obj->add_ip_rule($src_ip,
$dst_ip, $chain_past_end, $table, $chain, $target,
{'protocol' => 'tcp', 's_port' => 0, 'd_port' => 80,
'mac_source' => $mac_source});
&pass_fail($rv, " Could not add TCP $src_ip(0) -> $dst_ip(80) " .
"$target mac_source $mac_source");
&dots_print("find ext rule: $table $chain TCP $src_ip(0) " .
"-> $dst_ip(80) $target mac_source $mac_source ");
($rule_position, $num_chain_rules) = $ipt_obj->find_ip_rule($src_ip,
$dst_ip, $table, $chain, $target,
{'protocol' => 'tcp', 's_port' => 0, 'd_port' => 80,
'mac_source' => $mac_source});
&pass_fail($rule_position, " Could not find TCP $src_ip(0) " .
"-> $dst_ip(80) $target mac_source $mac_source");
### TCP + comment
&dots_print("add_ext_ip_rules(): $table $chain TCP " .
"$src_ip(0) -> $dst_ip(80) $target comment 'test comment' ");
($rv, $out_ar, $err_ar) = $ipt_obj->add_ip_rule($src_ip,
$dst_ip, $chain_past_end, $table, $chain, $target,
{'protocol' => 'tcp', 's_port' => 0, 'd_port' => 80,
'comment' => 'test comment'});
&pass_fail($rv, " Could not add TCP $src_ip(0) -> " .
"$dst_ip(80) $target comment 'test comment'");
&dots_print("find ext rule: $table $chain TCP " .
"$src_ip(0) -> $dst_ip(80) $target comment 'test comment' ");
($rule_position, $num_chain_rules) = $ipt_obj->find_ip_rule($src_ip,
$dst_ip, $table, $chain, $target,
{'protocol' => 'tcp', 's_port' => 0, 'd_port' => 80,
'comment' => 'test comment'});
&pass_fail($rule_position, " Could not find TCP $src_ip(0) " .
"-> $dst_ip(80) $target comment 'test comment'");
### TCP + comment + string match
&dots_print("add_ext_ip_rules(): $table $chain TCP " .
"$src_ip(0) -> $dst_ip(80) $target comment 'test comment' string 'search str'");
($rv, $out_ar, $err_ar) = $ipt_obj->add_ip_rule($src_ip,
$dst_ip, $chain_past_end, $table, $chain, $target,
{'protocol' => 'tcp', 's_port' => 0, 'd_port' => 80,
'comment' => 'test comment', 'string' => 'search str'});
&pass_fail($rv, " Could not add TCP $src_ip(0) -> $dst_ip(80) " .
"$target comment 'test comment' string 'search str'");
&dots_print("find ext rule: $table $chain TCP " .
"$src_ip(0) -> $dst_ip(80) $target comment 'test comment' string 'search str' ");
($rule_position, $num_chain_rules) = $ipt_obj->find_ip_rule($src_ip,
$dst_ip, $table, $chain, $target,
{'protocol' => 'tcp', 's_port' => 0, 'd_port' => 80, 'comment' => 'test comment',
'string' => 'search str'});
&pass_fail($rule_position, " Could not find TCP $src_ip(0) -> " .
"$dst_ip(80) $target comment 'test comment' 'string' => 'search str'");
### UDP
&dots_print("add_ext_ip_rules(): $table $chain " .
"UDP $src_ip(0) -> $dst_ip(53) $target ");
($rv, $out_ar, $err_ar) = $ipt_obj->add_ip_rule($src_ip,
$dst_ip, $chain_past_end, $table, $chain, $target,
{'protocol' => 'udp', 's_port' => 0, 'd_port' => 53});
&pass_fail($rv, " Could not add UDP $src_ip(0) -> $dst_ip(53) $target rule");
&dots_print("find ext rule: $table $chain " .
"UDP $src_ip(0) -> $dst_ip(53) $target ");
($rule_position, $num_chain_rules) = $ipt_obj->find_ip_rule($src_ip,
$dst_ip, $table, $chain, $target,
{'normalize' => 1, 'protocol' => 'udp', 's_port' => 0,
'd_port' => 53});
&pass_fail($rule_position, " Could not find UDP " .
"$src_ip(0) -> $dst_ip(53) $target rule");
### UDP length
&dots_print("add_ext_ip_rules(): $table $chain " .
"UDP $src_ip(0) -> $dst_ip(53) $target length 10:100 ");
($rv, $out_ar, $err_ar) = $ipt_obj->add_ip_rule($src_ip,
$dst_ip, $chain_past_end, $table, $chain, $target,
{'protocol' => 'udp', 's_port' => 0, 'd_port' => 53,
'length' => '10:100'});
&pass_fail($rv, " Could not add UDP $src_ip(0) -> " .
"$dst_ip(53) $target length 10:100 rule");
&dots_print("find ext rule: $table $chain " .
"UDP $src_ip(0) -> $dst_ip(53) $target ");
($rule_position, $num_chain_rules) = $ipt_obj->find_ip_rule($src_ip,
$dst_ip, $table, $chain, $target,
{'normalize' => 1, 'protocol' => 'udp', 's_port' => 0,
'd_port' => 53, 'length' => '10:100'});
&pass_fail($rule_position, " Could not find UDP " .
"$src_ip(0) -> $dst_ip(53) $target length 10:100 rule");
}
return;
}
sub create_chain_test() {
my ($ipt_obj, $table, $chain) = @_;
&dots_print("create_chain(): $table $chain");
my ($rv, $out_ar, $err_ar) = $ipt_obj->create_chain($table, $chain);
&pass_fail($rv, " Could not create $table $chain chain");
die "[*] FATAL" unless $rv;
return;
}
sub chain_does_not_exist_test() {
my ($ipt_obj, $table, $chain) = @_;
&dots_print("!chain_exists(): $table $chain");
my ($rv, $out_ar, $err_ar) = $ipt_obj->chain_exists($table, $chain);
if ($rv) {
$rv = 0;
} else {
$rv = 1;
}
&pass_fail(++$rv, " Chain exists.");
die "[*] FATAL" unless $rv;
return;
}
sub custom_chain_init() {
my ($ipt_obj, $table, $jump_from_chain, $chain) = @_;
my ($rv, $out_ar, $err_ar) = $ipt_obj->chain_exists($table,
$chain);
if ($rv) {
$ipt_obj->delete_chain($table, $jump_from_chain, $chain);
}
return;
}
sub delete_chain_test() {
my ($ipt_obj, $table, $jump_from_chain, $chain) = @_;
&dots_print("delete_chain(): $table $chain");
my ($rv, $out_ar, $err_ar) = $ipt_obj->delete_chain($table,
$jump_from_chain, $chain);
&pass_fail($rv, " Could not delete chain.");
die "[*] FATAL" unless $rv;
return;
}
sub dots_print() {
my $msg = shift;
&logr($msg);
my $dots = '';
for (my $i=length($msg); $i < $PRINT_LEN; $i++) {
$dots .= '.';
}
if ($dots) {
&logr($dots);
} else {
&logr(' ') unless $msg =~ /\s$/;
}
return;
}
sub pass_fail() {
my ($rv, $fail_msg) = @_;
$executed++;
if ($rv) {
&logr("pass ($executed)\n");
$passed++;
} else {
&logr("fail ($executed)\n");
&logr("$fail_msg\n");
$failed++;
exit $rv if $exit_on_first_failure;
}
return;
}
sub logr() {
my $msg = shift;
print STDOUT $msg;
open F, ">> $logfile" or die $!;
print F $msg;
close F;
return;
}
sub init() {
$|++; ### turn off buffering
$< == 0 && $> == 0 or
die "[*] $0: You must be root (or equivalent ",
"UID 0 account) to effectively test IPTables::ChainMgr";
unlink $logfile if -e $logfile;
for my $bin ($iptables_bin, $ip6tables_bin) {
die "[*] $bin does not exist" unless -e $bin;
die "[*] $bin not executable" unless -x $bin;
}
return;
}
sub usage() {
print "$0 [--debug] [--verbose] [-h]\n";
exit 0;
}
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