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#!/usr/bin/perl
package Vyatta::FirewallOpMode::Summary;
use lib "/opt/vyatta/share/perl5/";
use Vyatta::Config;
use Vyatta::IpTables::Rule;
use Vyatta::IpTables::IpSet;
use Vyatta::IpTables::AddressFilter;
use Vyatta::Zone;
use Data::Dumper;
use warnings;
use strict;
sub show_interfaces_zones {
my ($chain, $tree, $cfg, $cfg_ifs) = @_;
$cfg->setLevel("");
my $outhash = {};
my @int_strs = ();
my @zone_strs = ();
my $content_str = "";
for (@{$cfg_ifs}) {
my ($iname, $ipath) = ($_->{name}, $_->{path});
for my $dir ($cfg->listOrigNodes("$ipath firewall")) {
my $ichain = $cfg->returnOrigValue("$ipath firewall $dir $tree");
if (defined($ichain) and $ichain eq $chain) {
$dir =~ y/a-z/A-Z/;
push @int_strs, "($iname,$dir)";
}
}
}
$outhash->{'interfaces'} = \@int_strs;
# check if chain used to filter traffic between zones
my $used_in_zonefw=0;
my @all_zones = Vyatta::Zone::get_all_zones("listOrigNodes");
foreach my $zone (sort(@all_zones)) {
my @from_zones = Vyatta::Zone::get_from_zones("listOrigNodes", $zone);
my @from_zones_using_this_chain=();
foreach my $from_zone (sort(@from_zones)) {
my $fw_ruleset=Vyatta::Zone::get_firewall_ruleset("returnOrigValue",
$zone, $from_zone, $tree);
if (defined $fw_ruleset && $fw_ruleset eq $chain) {
push (@from_zones_using_this_chain, $from_zone);
if ($used_in_zonefw == 0) {
$used_in_zonefw++;
}
}
}
if (scalar(@from_zones_using_this_chain) > 0) {
my $single_or_multiple_zone = 'zone';
if (scalar(@from_zones_using_this_chain) > 1) {
$single_or_multiple_zone = 'zones';
}
my $string_fromzones=join(', ', sort(@from_zones_using_this_chain));
push @zone_strs, "zone [$zone] from $single_or_multiple_zone [$string_fromzones]";
}
}
$outhash->{'zones'} = \@zone_strs;
# check if content-inspection is using this ruleset
my $custom_filter = 0;
my $config = $cfg;
$config->setLevel("content-inspection traffic-filter");
my $custom_traffic_filter = $config->returnOrigValue('custom');
if ((defined $custom_traffic_filter) && ($custom_traffic_filter eq $chain)) {
$custom_filter = 1;
$content_str = "Active on all incoming and forwarded traffic for content-inspection";
}
$outhash->{'content-inspection'} = $content_str;
return $outhash;
}
# mapping from config node to printable string describing it.
my %description_hash = ( 'name' => 'IPv4',
'ipv6-name' => 'IPv6',
'modify' => 'IPv4 Modify',
'ipv6-modify' => 'IPv6 Modify');
sub show_tree {
my ($tree, $config) = @_;
my $tree_hash = {};
my @cfg_ifs = Vyatta::Interface::get_all_cfg_interfaces(1);
my $description = $description_hash{$tree};
$config->setLevel("firewall $tree");
my @chains = $config->listOrigNodes();
my $chain_cnt=0;
foreach (sort @chains) {
$chain_cnt++;
$tree_hash->{$_}->{references} = show_interfaces_zones($_, $tree, $config, \@cfg_ifs);
$tree_hash->{$_}->{description} = $config->returnOrigValue("$_ description");
}
return $tree_hash;
}
sub show_state_policy {
my ($config) = @_;
my $outhash = {};
my $state_format = "%-15s %-8s %-8s";
my @fw_states = ('invalid', 'established', 'related');
my $fw_state_output = "";
my $fw_state_set = "false";
foreach my $state (@fw_states) {
$config->setLevel("firewall state-policy $state");
my ($action, $log_enabled) = (undef, undef);
$log_enabled = $config->existsOrig("log enable");
$action = $config->returnOrigValue("action");
if (defined $action) {
$fw_state_set = "true";
last;
}
}
if ($fw_state_set eq "true") {
foreach my $state (@fw_states) {
$config->setLevel("firewall state-policy $state");
my ($action, $log_enabled) = (undef, undef);
$log_enabled = $config->existsOrig("log enable");
$action = $config->returnOrigValue("action");
if (defined $action) {
$outhash->{$state}={ 'action' => $action, 'log' => defined($log_enabled) ? 'enabled' : 'disabled' };
}
}
}
return $outhash;
}
# Print all rule sets in all four trees
sub get_firewall_summary {
my $config = new Vyatta::Config;
my $hash = {};
foreach my $tree (reverse(sort(keys %description_hash))) {
$hash->{$tree} = show_tree($tree, $config);
$hash->{global} = show_state_policy($config);
}
return $hash;
}
sub get_group_summary{
my @lines = `ipset -L`;
my $sets = {};
foreach my $line (@lines) {
if ($line =~ /^Name:\s+(\S+)$/ ) {
my $set = $1;
my $group = new Vyatta::IpTables::IpSet($set);
next if ! $group->exists();
my $desc = $group->get_description();
$desc = '' if ! defined($desc);
my @fw_refs = $group->get_firewall_references();
push @fw_refs, 'none' if scalar(@fw_refs) == 0;
my $type = $group->get_type();
$sets->{$type}->{$set} = {
'description' => $desc,
'references' => \@fw_refs
};
}
}
return $sets;
}
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