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|
#!/usr/bin/perl
use lib "/opt/vyatta/share/perl5/";
use Vyatta::Config;
use Vyatta::IpTables::Rule;
use Vyatta::IpTables::AddressFilter;
exit 1 if ($#ARGV < 1);
my $tree_chain = $ARGV[0];
my $xsl_file = $ARGV[1];
my $rule_num = $ARGV[2]; # rule number to match (optional)
if (! -e $xsl_file) {
print "Invalid XSL file \"$xsl_file\"\n";
exit 1;
}
if (defined($rule_num) && (!($rule_num =~ /^\d+$/) || ($rule_num > 1025))) {
print "Invalid rule number \"$rule_num\"\n";
exit 1;
}
sub numerically { $a <=> $b; }
### all interfaces firewall nodes
#/ethernet/node.tag/pppoe/node.tag/firewall/<dir>/name/node.def
#/ethernet/node.tag/vif/node.tag/firewall/<dir>/name/node.def
#/ethernet/node.tag/firewall/<dir>/name/node.def
#/adsl/node.tag/pvc/node.tag/pppoa/node.tag/firewall/<dir>/name/node.def
#/adsl/node.tag/pvc/node.tag/pppoe/node.tag/firewall/<dir>/name/node.def
#/adsl/node.tag/pvc/node.tag/classical-ipoa/firewall/<dir>/name/node.def
#/tunnel/node.tag/firewall/<dir>/name/node.def
#/serial/node.tag/cisco-hdlc/vif/node.tag/firewall/<dir>/name/node.def
#/serial/node.tag/frame-relay/vif/node.tag/firewall/<dir>/name/node.def
#/serial/node.tag/ppp/vif/node.tag/firewall/<dir>/name/node.def
#/wirelessmodem/node.tag/firewall/<dir>/name/node.def
sub show_interfaces {
my $chain = shift;
my $cmd = "find /opt/vyatta/config/active/ "
. "|grep -e '/firewall/[^/]\\+/name/node.val'"
. "| xargs grep -l '^$chain\$'";
my $ifd;
return if (!open($ifd, "$cmd |"));
my @ints = <$ifd>;
# e.g.,
#/opt/vyatta/config/active/interfaces/ethernet/eth1/firewall/in/name/node.val
my $pfx = '/opt/vyatta/config/active/interfaces';
my $sfx = '/name/node.val';
my @int_strs = ();
foreach (@ints) {
my ($intf, $vif, $dir) = (undef, undef, undef);
if (/^$pfx\/[^\/]+\/([^\/]+)(\/.*)?\/firewall\/([^\/]+)$sfx$/) {
($intf, $dir) = ($1, $3);
$dir =~ y/a-z/A-Z/;
} else {
next;
}
if (/\/vif\/([^\/]+)\/firewall\//) {
$vif = $1;
push @int_strs, "($intf.$vif,$dir)";
} else {
push @int_strs, "($intf,$dir)";
}
}
if (scalar(@int_strs) > 0) {
print "\nActive on " . (join ' ', @int_strs) . "\n";
} else {
print "\nInactive: Not applied to any interfaces.\n";
}
}
# mapping from config node to iptables/ip6tables table
my %table_hash = ( 'name' => 'filter',
'ipv6-name' => 'filter',
'modify' => 'mangle',
'ipv6-modify' => 'mangle' );
# mapping from config node to iptables command.
my %cmd_hash = ( 'name' => 'iptables',
'ipv6-name' => 'ip6tables',
'modify' => 'iptables',
'ipv6-modify' => 'ip6tables');
# 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_chain($$$) {
my ($chain, $fh, $tree) = @_;
my $table = $table_hash{$tree};
my $iptables_cmd = $cmd_hash{$tree};
open my $iptables, "-|"
or exec "sudo", "/sbin/$iptables_cmd", "-t", $table, "-L", $chain, "-vn"
or exit 1;
my @stats = ();
while (<$iptables>) {
if (!/^\s*(\d+[KMG]?)\s+(\d+[KMG]?)\s/) {
next;
}
push @stats, ($1, $2);
}
close $iptables;
print $fh "<opcommand name='firewallrules'><format type='row'>\n";
my $config = new Vyatta::Config;
$config->setLevel("firewall $tree $chain rule");
my @rules = sort numerically $config->listOrigNodes();
foreach (@rules) {
# just take the stats from the 1st iptables rule and remove unneeded stats
# (if this rule corresponds to multiple iptables rules). note that
# depending on how our rule is translated into multiple iptables rules,
# this may actually need to be the sum of all corresponding iptables stats
# instead of just taking the first pair.
my $pkts = shift @stats;
my $bytes = shift @stats;
my $rule = new Vyatta::IpTables::Rule;
$rule->setupOrig("firewall $tree $chain rule $_");
my $ipt_rules = $rule->get_num_ipt_rules();
splice(@stats, 0, (($ipt_rules - 1) * 2));
if (defined($rule_num) && $rule_num != $_) {
next;
}
next if $rule->is_disabled();
print $fh " <row>\n";
print $fh " <rule_number>$_</rule_number>\n";
print $fh " <pkts>$pkts</pkts>\n";
print $fh " <bytes>$bytes</bytes>\n";
$rule->outputXml($fh);
print $fh " </row>\n";
}
if (!defined($rule_num)) {
# dummy rule
print $fh " <row>\n";
print $fh " <rule_number>1025</rule_number>\n";
my $pkts = shift @stats;
my $bytes = shift @stats;
print $fh " <pkts>$pkts</pkts>\n";
print $fh " <bytes>$bytes</bytes>\n";
my $rule = new Vyatta::IpTables::Rule;
$rule->setupDummy();
$rule->outputXml($fh);
print $fh " </row>\n";
}
print $fh "</format></opcommand>\n";
}
#
# main
#
my $tree;
my $config = new Vyatta::Config;
my @chains;
my @tree_chain_name = split('_', $tree_chain);
my $tree_name = $tree_chain_name[0];
my $chain_name = $tree_chain_name[1];
# check if table-name is either 'all' or one of four keys in %table_hash
if (!($tree_name eq "all" || (scalar(grep(/^$tree_name$/, (keys %table_hash))) > 0))) {
print "Invalid firewall type name [$tree_name]\n";
exit 1;
}
if ($tree_name eq "all") {
# Print all rule sets in all four trees
foreach $tree (reverse(sort(keys %table_hash))) {
my $description = $description_hash{$tree};
$config->setLevel("firewall $tree");
@chains = $config->listOrigNodes();
foreach (sort @chains) {
print "$description Firewall \"$_\":\n";
show_interfaces($_);
open(RENDER, "| /opt/vyatta/sbin/render_xml $xsl_file") or exit 1;
show_chain($_, *RENDER{IO}, $tree);
close RENDER;
print "-" x 80 . "\n";
}
}
} elsif ($chain_name eq "all") {
# Print all rule sets in specified tree
$tree = $tree_name;
my $description = $description_hash{$tree};
$config->setLevel("firewall $tree");
@chains = $config->listOrigNodes();
foreach (sort @chains) {
print "$description Firewall \"$_\":\n";
show_interfaces($_);
open(RENDER, "| /opt/vyatta/sbin/render_xml $xsl_file") or exit 1;
show_chain($_, *RENDER{IO}, $tree);
close RENDER;
print "-" x 80 . "\n";
}
} else {
# Print given rule set in specified tree
$tree = $tree_name;
$config->setLevel("firewall $tree");
@chains = $config->listOrigNodes();
# validate chain-name
if (!(scalar(grep(/^$chain_name$/, @chains)) > 0)) {
print "Invalid firewall instance [$chain_name] \n";
exit 1;
}
if (defined $rule_num) {
#validate rule-num for given chain
$config->setLevel("firewall $tree $chain_name rule");
my @rules = $config->listOrigNodes();
if (!(scalar(grep(/^$rule_num$/, @rules)) > 0)) {
print "Invalid rule $rule_num under firewall instance [$chain_name] \n";
exit 1;
}
}
my $description = $description_hash{$tree};
print "$description Firewall \"$chain_name\":\n";
show_interfaces($chain_name);
open(RENDER, "| /opt/vyatta/sbin/render_xml $xsl_file") or exit 1;
show_chain($chain_name, *RENDER{IO}, $tree);
close RENDER;
print "-" x 80 . "\n";
}
exit 0;
# Local Variables:
# mode: perl
# indent-tabs-mode: nil
# perl-indent-level: 2
# End:
|
