[ipfire-2.x.git] / html / cgi-bin / connections.cgi

#!/usr/bin/perl
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2007-2012  IPFire Team  <info@ipfire.org>                     #
#                                                                             #
# This program is free software: you can redistribute it and/or modify        #
# it under the terms of the GNU General Public License as published by        #
# the Free Software Foundation, either version 3 of the License, or           #
# (at your option) any later version.                                         #
#                                                                             #
# This program is distributed in the hope that it will be useful,             #
# but WITHOUT ANY WARRANTY; without even the implied warranty of              #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
# GNU General Public License for more details.                                #
#                                                                             #
# You should have received a copy of the GNU General Public License           #
# along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
#                                                                             #
###############################################################################

use strict;

use Net::IPv4Addr qw( :all );
use Switch;

# enable only the following on debugging purpose
#use warnings;
#use CGI::Carp 'fatalsToBrowser';

require '/var/ipfire/general-functions.pl';
require "${General::swroot}/lang.pl";
require "${General::swroot}/header.pl";

&Header::showhttpheaders();

my @network=();
my @masklen=();
my @colour=();

my %netsettings=();
&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);

#workaround to suppress a warning when a variable is used only once
my @dummy = ( ${Header::table1colour} );
undef (@dummy);

# Read the connection tracking table.
open(CONNTRACK, "/usr/local/bin/getconntracktable | sort -k 5,5 --numeric-sort --reverse |") or die "Unable to read conntrack table";
my @conntrack = <CONNTRACK>;
close(CONNTRACK);

# Collect data for the @network array.

# Add Firewall Localhost 127.0.0.1
push(@network, '127.0.0.1');
push(@masklen, '255.255.255.255');
push(@colour, ${Header::colourfw});

if (open(IP, "${General::swroot}/red/local-ipaddress")) {
	my $redip = <IP>;
	close(IP);

	chomp $redip;
	push(@network, $redip);
	push(@masklen, '255.255.255.255');
	push(@colour, ${Header::colourfw});
}

# Add STATIC RED aliases
if ($netsettings{'RED_DEV'}) {
	my $aliasfile = "${General::swroot}/ethernet/aliases";
	open(ALIASES, $aliasfile) or die 'Unable to open aliases file.';
	my @aliases = <ALIASES>;
	close(ALIASES);

	# We have a RED eth iface
	if ($netsettings{'RED_TYPE'} eq 'STATIC') {
		# We have a STATIC RED eth iface
		foreach my $line (@aliases) {
			chomp($line);
			my @temp = split(/\,/,$line);
			if ($temp[0]) {
				push(@network, $temp[0]);
				push(@masklen, $netsettings{'RED_NETMASK'} );
				push(@colour, ${Header::colourfw} );
			}
		}
	}
}

# Add Green Firewall Interface
push(@network, $netsettings{'GREEN_ADDRESS'});
push(@masklen, "255.255.255.255" );
push(@colour, ${Header::colourfw} );

# Add Green Network to Array
push(@network, $netsettings{'GREEN_NETADDRESS'});
push(@masklen, $netsettings{'GREEN_NETMASK'} );
push(@colour, ${Header::colourgreen} );

# Add Green Routes to Array
my @routes = `/sbin/route -n | /bin/grep $netsettings{'GREEN_DEV'}`;
foreach my $route (@routes) {
	chomp($route);
	my @temp = split(/[\t ]+/, $route);
	push(@network, $temp[0]);
	push(@masklen, $temp[2]);
	push(@colour, ${Header::colourgreen} );
}

# Add Blue Firewall Interface
push(@network, $netsettings{'BLUE_ADDRESS'});
push(@masklen, "255.255.255.255" );
push(@colour, ${Header::colourfw} );

# Add Blue Network
if ($netsettings{'BLUE_DEV'}) {
	push(@network, $netsettings{'BLUE_NETADDRESS'});
	push(@masklen, $netsettings{'BLUE_NETMASK'} );
	push(@colour, ${Header::colourblue} );

	# Add Blue Routes to Array
	@routes = `/sbin/route -n | /bin/grep $netsettings{'BLUE_DEV'}`;
	foreach my $route (@routes) {
		chomp($route);
		my @temp = split(/[\t ]+/, $route);
		push(@network, $temp[0]);
		push(@masklen, $temp[2]);
		push(@colour, ${Header::colourblue} );
	}
}

# Add Orange Network
if ($netsettings{'ORANGE_DEV'}) {
	push(@network, $netsettings{'ORANGE_NETADDRESS'});
	push(@masklen, $netsettings{'ORANGE_NETMASK'} );
	push(@colour, ${Header::colourorange} );
	# Add Orange Routes to Array
	@routes = `/sbin/route -n | /bin/grep $netsettings{'ORANGE_DEV'}`;
	foreach my $route (@routes) {
		chomp($route);
		my @temp = split(/[\t ]+/, $route);
		push(@network, $temp[0]);
		push(@masklen, $temp[2]);
		push(@colour, ${Header::colourorange} );
	}
}

# Add OpenVPN net and RED/BLUE/ORANGE entry (when appropriate)
if (-e "${General::swroot}/ovpn/settings") {
	my %ovpnsettings = ();
	&General::readhash("${General::swroot}/ovpn/settings", \%ovpnsettings);
	my @tempovpnsubnet = split("\/",$ovpnsettings{'DOVPN_SUBNET'});

	# add OpenVPN net
	push(@network, $tempovpnsubnet[0]);
	push(@masklen, $tempovpnsubnet[1]);
	push(@colour, ${Header::colourovpn} );

	# add BLUE:port / proto
	if (($ovpnsettings{'ENABLED_BLUE'} eq 'on') && $netsettings{'BLUE_DEV'}) {
		push(@network, $netsettings{'BLUE_ADDRESS'} );
		push(@masklen, '255.255.255.255' );
		push(@colour, ${Header::colourovpn});
	}

	# add ORANGE:port / proto
	if (($ovpnsettings{'ENABLED_ORANGE'} eq 'on') && $netsettings{'ORANGE_DEV'}) {
		push(@network, $netsettings{'ORANGE_ADDRESS'} );
		push(@masklen, '255.255.255.255' );
		push(@colour, ${Header::colourovpn} );
	}
}

open(IPSEC, "${General::swroot}/var/ipfire/vpn/config");
my @ipsec = <IPSEC>;
close(IPSEC);

foreach my $line (@ipsec) {
	my @vpn = split(',', $line);
	my ($network, $mask) = split("/", $vpn[12]);

	if (!&General::validip($mask)) {
		$mask = ipv4_cidr2msk($mask);
	}

	push(@network, $network);
	push(@masklen, $mask);
	push(@colour, ${Header::colourvpn});
}

if (-e "${General::swroot}/ovpn/n2nconf") {
	open(OVPNN2N, "${General::swroot}/ovpn/ovpnconfig");
	my @ovpnn2n = <OVPNN2N>;
	close(OVPNN2N);

	foreach my $line (@ovpnn2n) {
		my @ovpn = split(',', $line);
		next if ($ovpn[4] ne 'net');

		my ($network, $mask) = split("/", $ovpn[12]);
		if (!&General::validip($mask)) {
			$mask = ipv4_cidr2msk($mask);
		}

		push(@network, $network);
		push(@masklen, $mask);
		push(@colour, ${Header::colourovpn});
	}
}

# Show the page.
&Header::openpage($Lang::tr{'connections'}, 1, '');
&Header::openbigbox('100%', 'left');
&Header::openbox('100%', 'left', $Lang::tr{'connection tracking'});

# Print legend.
print <<END;
	<table width='100%'>
		<tr>
			<td align='center'>
				<b>$Lang::tr{'legend'} : </b>
			</td>
			<td align='center' bgcolor='${Header::colourgreen}'>
				<b><font color='#FFFFFF'>$Lang::tr{'lan'}</font></b>
			</td>
			<td align='center' bgcolor='${Header::colourred}'>
				<b><font color='#FFFFFF'>$Lang::tr{'internet'}</font></b>
			</td>
			<td align='center' bgcolor='${Header::colourorange}'>
				<b><font color='#FFFFFF'>$Lang::tr{'dmz'}</font></b>
			</td>
			<td align='center' bgcolor='${Header::colourblue}'>
				<b><font color='#FFFFFF'>$Lang::tr{'wireless'}</font></b>
			</td>
			<td align='center' bgcolor='${Header::colourfw}'>
				<b><font color='#FFFFFF'>IPFire</font></b>
			</td>
			<td align='center' bgcolor='${Header::colourvpn}'>
				<b><font color='#FFFFFF'>$Lang::tr{'vpn'}</font></b>
			</td>
			<td align='center' bgcolor='${Header::colourovpn}'>
				<b><font color='#FFFFFF'>$Lang::tr{'OpenVPN'}</font></b>
			</td>
		</tr>
	</table>
	<br>
END

# Print table header.
print <<END;
	<table width='100%'>
		<tr>
			<th align='center'>
				$Lang::tr{'protocol'}
			</th>
			<th align='center'>
				$Lang::tr{'source ip and port'}
			</th>
			<th>&nbsp;</th>
			<th align='center'>
				$Lang::tr{'dest ip and port'}
			</th>
			<th>&nbsp;</th>
			<th align='center'>
				$Lang::tr{'download'} /
				<br>$Lang::tr{'upload'}
			</th>
			<th align='center'>
				$Lang::tr{'connection'}<br>$Lang::tr{'status'}
			</th>
			<th align='center'>
				$Lang::tr{'expires'}<br>($Lang::tr{'seconds'})
			</th>
		</tr>
END

foreach my $line (@conntrack) {
	my @conn = split(' ', $line);

	# The first bit is the l3 protocol.
	my $l3proto = $conn[0];

	# Skip everything that is not IPv4.
	if ($l3proto ne 'ipv4') {
		next;
	}

	# L4 protocol (tcp, udp, ...).
	my $l4proto = $conn[2];

	if ($l4proto eq 'unknown') {
		$l4proto = '';
	}

	# Source and destination.
	my $sip;
	my $dip;
	my $sport;
	my $dport;
	my @packets;
	my @bytes;

	my $ttl = $conn[4];
	my $state;
	if ($l4proto eq 'tcp') {
		$state = $conn[5];
	}

	# Kick out everything that is not IPv4.
	foreach my $item (@conn) {
		my ($key, $val) = split('=', $item);

		switch ($key) {
			case "src" {
				$sip = $val;
			}
			case "dst" {
				$dip = $val;
			}
			case "sport" {
				$sport = $val;
			}
			case "dport" {
				$dport = $val;
			}
			case "packets" {
				push(@packets, $val);
			}
			case "bytes" {
				push(@bytes, $val);
			}
		}
	}

	my $sip_colour = ipcolour($sip);
	my $dip_colour = ipcolour($dip);

    my $sserv = '';
    if ($sport < 1024) {
		$sserv = uc(getservbyport($sport, lc($l4proto)));
		if ($sserv ne '') {
			$sserv = "&nbsp;($sserv)";
		}
    }

    my $dserv = '';
    if ($dport < 1024) {
		$dserv = uc(getservbyport($dport, lc($l4proto)));
		if ($dserv ne '') {
			$dserv = "&nbsp;($dserv)";
		}
    }

	my $bytes_in = format_bytes($bytes[0]);
	my $bytes_out = format_bytes($bytes[1]);

	# Format TTL
	$ttl = format_time($ttl);

	print <<END;
	<tr>
		<td align='center'>$l4proto</td>
		<td align='center' bgcolor='$sip_colour'>
			<a href='/cgi-bin/ipinfo.cgi?ip=$sip'>
				<font color='#FFFFFF'>$sip</font>
			</a>
		</td>
		<td align='center' bgcolor='$sip_colour'>
			<a href='http://isc.sans.org/port_details.php?port=$sport' target='top'>
				<font color='#FFFFFF'>$sport$sserv</font>
			</a>
		</td>
		<td align='center' bgcolor='$dip_colour'>
			<a href='/cgi-bin/ipinfo.cgi?ip=$dip'>
				<font color='#FFFFFF'>$dip</font>
			</a>
		</td>
		<td align='center' bgcolor='$dip_colour'>
			<a href='http://isc.sans.org/port_details.php?port=$dport' target='top'>
				<font color='#FFFFFF'>$dport$dserv</font>
			</a>
		</td>
		<td align='center'>
			$bytes_in / $bytes_out
		</td>
		<td align='center'>$state</td>
		<td align='center'>$ttl</td>
	</tr>
END
}

# Close the main table.
print "</table>";

&Header::closebox();
&Header::closebigbox();
&Header::closepage();

sub format_bytes($) {
	my $bytes = shift;
	my @units = ("B", "k", "M", "G", "T");

	foreach my $unit (@units) {
		if ($bytes < 1024) {
			return sprintf("%d%s", $bytes, $unit);
		}

		$bytes /= 1024;
	}

	return sprintf("%d%s", $bytes, $units[$#units]);
}

sub format_time($) {
	my $time = shift;

	my $seconds = $time % 60;
	my $minutes = $time / 60;

	my $hours = 0;
	if ($minutes >= 60) {
		$hours = $minutes / 60;
		$minutes %= 60;
	}

	return sprintf("%3d:%02d:%02d", $hours, $minutes, $seconds);
}

sub ipcolour($) {
	my $id = 0;
	my $colour = ${Header::colourred};
	my ($ip) = $_[0];
	my $found = 0;

	foreach my $line (@network) {
		if ($network[$id] eq '') {
			$id++;
		} else {
			if (!$found && ipv4_in_network($network[$id], $masklen[$id], $ip) ) {
				$found = 1;
				$colour = $colour[$id];
			}
			$id++;
		}
	}

	return $colour;
}

1;
Commit	Line	Data
ac1cfefa	1	#!/usr/bin/perl
70df8302 MT	2	###############################################################################
	3	# #
	4	# IPFire.org - A linux based firewall #
75bc929e	5	# Copyright (C) 2007-2012 IPFire Team <info@ipfire.org> #
70df8302 MT	6	# #
	7	# This program is free software: you can redistribute it and/or modify #
	8	# it under the terms of the GNU General Public License as published by #
	9	# the Free Software Foundation, either version 3 of the License, or #
	10	# (at your option) any later version. #
	11	# #
	12	# This program is distributed in the hope that it will be useful, #
	13	# but WITHOUT ANY WARRANTY; without even the implied warranty of #
	14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
	15	# GNU General Public License for more details. #
	16	# #
	17	# You should have received a copy of the GNU General Public License #
	18	# along with this program. If not, see <http://www.gnu.org/licenses/>. #
	19	# #
	20	###############################################################################
ac1cfefa	21
75bc929e	22	use strict;
ac1cfefa MT	23
ac1cfefa MT	24	use Net::IPv4Addr qw( :all );
75bc929e	25	use Switch;
ac1cfefa MT	26
ac1cfefa MT	27	# enable only the following on debugging purpose
1465b127	28	#use warnings;
cb5e9c6c	29	#use CGI::Carp 'fatalsToBrowser';
ac1cfefa	30
986e08d9	31	require '/var/ipfire/general-functions.pl';
ac1cfefa MT	32	require "${General::swroot}/lang.pl";
	33	require "${General::swroot}/header.pl";
	34
75bc929e MT	35	&Header::showhttpheaders();
	36
	37	my @network=();
	38	my @masklen=();
	39	my @colour=();
	40
	41	my %netsettings=();
	42	&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
	43
ac1cfefa MT	44	#workaround to suppress a warning when a variable is used only once
	45	my @dummy = ( ${Header::table1colour} );
	46	undef (@dummy);
	47
75bc929e MT	48	# Read the connection tracking table.
	49	open(CONNTRACK, "/usr/local/bin/getconntracktable \| sort -k 5,5 --numeric-sort --reverse \|") or die "Unable to read conntrack table";
	50	my @conntrack = <CONNTRACK>;
	51	close(CONNTRACK);
ac1cfefa	52
75bc929e	53	# Collect data for the @network array.
ac1cfefa	54
75bc929e MT	55	# Add Firewall Localhost 127.0.0.1
	56	push(@network, '127.0.0.1');
	57	push(@masklen, '255.255.255.255');
	58	push(@colour, ${Header::colourfw});
ac1cfefa	59
2c42fe6a	60	if (open(IP, "${General::swroot}/red/local-ipaddress")) {
75bc929e MT	61	my $redip = <IP>;
	62	close(IP);
	63
	64	chomp $redip;
	65	push(@network, $redip);
	66	push(@masklen, '255.255.255.255');
	67	push(@colour, ${Header::colourfw});
2c42fe6a MT	68	}
2c42fe6a MT	69
75bc929e MT	70	# Add STATIC RED aliases
	71	if ($netsettings{'RED_DEV'}) {
	72	my $aliasfile = "${General::swroot}/ethernet/aliases";
	73	open(ALIASES, $aliasfile) or die 'Unable to open aliases file.';
	74	my @aliases = <ALIASES>;
	75	close(ALIASES);
	76
	77	# We have a RED eth iface
	78	if ($netsettings{'RED_TYPE'} eq 'STATIC') {
	79	# We have a STATIC RED eth iface
	80	foreach my $line (@aliases) {
	81	chomp($line);
	82	my @temp = split(/\,/,$line);
	83	if ($temp[0]) {
	84	push(@network, $temp[0]);
	85	push(@masklen, $netsettings{'RED_NETMASK'} );
	86	push(@colour, ${Header::colourfw} );
	87	}
	88	}
	89	}
	90	}
ac1cfefa MT	91
	92	# Add Green Firewall Interface
	93	push(@network, $netsettings{'GREEN_ADDRESS'});
	94	push(@masklen, "255.255.255.255" );
	95	push(@colour, ${Header::colourfw} );
	96
	97	# Add Green Network to Array
	98	push(@network, $netsettings{'GREEN_NETADDRESS'});
	99	push(@masklen, $netsettings{'GREEN_NETMASK'} );
	100	push(@colour, ${Header::colourgreen} );
	101
	102	# Add Green Routes to Array
	103	my @routes = `/sbin/route -n \| /bin/grep $netsettings{'GREEN_DEV'}`;
	104	foreach my $route (@routes) {
75bc929e MT	105	chomp($route);
	106	my @temp = split(/[\t ]+/, $route);
	107	push(@network, $temp[0]);
	108	push(@masklen, $temp[2]);
	109	push(@colour, ${Header::colourgreen} );
5433e2c9 MT	110	}
5433e2c9 MT	111
f9aaffa6 MT	112	# Add Blue Firewall Interface
	113	push(@network, $netsettings{'BLUE_ADDRESS'});
	114	push(@masklen, "255.255.255.255" );
	115	push(@colour, ${Header::colourfw} );
	116
5433e2c9 MT	117	# Add Blue Network
5433e2c9 MT	118	if ($netsettings{'BLUE_DEV'}) {
75bc929e MT	119	push(@network, $netsettings{'BLUE_NETADDRESS'});
	120	push(@masklen, $netsettings{'BLUE_NETMASK'} );
	121	push(@colour, ${Header::colourblue} );
	122
	123	# Add Blue Routes to Array
	124	@routes = `/sbin/route -n \| /bin/grep $netsettings{'BLUE_DEV'}`;
	125	foreach my $route (@routes) {
	126	chomp($route);
	127	my @temp = split(/[\t ]+/, $route);
	128	push(@network, $temp[0]);
	129	push(@masklen, $temp[2]);
	130	push(@colour, ${Header::colourblue} );
	131	}
	132	}
	133
	134	# Add Orange Network
	135	if ($netsettings{'ORANGE_DEV'}) {
	136	push(@network, $netsettings{'ORANGE_NETADDRESS'});
	137	push(@masklen, $netsettings{'ORANGE_NETMASK'} );
	138	push(@colour, ${Header::colourorange} );
	139	# Add Orange Routes to Array
	140	@routes = `/sbin/route -n \| /bin/grep $netsettings{'ORANGE_DEV'}`;
	141	foreach my $route (@routes) {
	142	chomp($route);
	143	my @temp = split(/[\t ]+/, $route);
	144	push(@network, $temp[0]);
	145	push(@masklen, $temp[2]);
	146	push(@colour, ${Header::colourorange} );
	147	}
5433e2c9 MT	148	}
5433e2c9 MT	149
6e13d0a5 MT	150	# Add OpenVPN net and RED/BLUE/ORANGE entry (when appropriate)
6e13d0a5 MT	151	if (-e "${General::swroot}/ovpn/settings") {
75bc929e MT	152	my %ovpnsettings = ();
	153	&General::readhash("${General::swroot}/ovpn/settings", \%ovpnsettings);
	154	my @tempovpnsubnet = split("\/",$ovpnsettings{'DOVPN_SUBNET'});
	155
	156	# add OpenVPN net
	157	push(@network, $tempovpnsubnet[0]);
	158	push(@masklen, $tempovpnsubnet[1]);
	159	push(@colour, ${Header::colourovpn} );
	160
	161	# add BLUE:port / proto
	162	if (($ovpnsettings{'ENABLED_BLUE'} eq 'on') && $netsettings{'BLUE_DEV'}) {
	163	push(@network, $netsettings{'BLUE_ADDRESS'} );
	164	push(@masklen, '255.255.255.255' );
	165	push(@colour, ${Header::colourovpn});
	166	}
6e13d0a5	167
75bc929e MT	168	# add ORANGE:port / proto
	169	if (($ovpnsettings{'ENABLED_ORANGE'} eq 'on') && $netsettings{'ORANGE_DEV'}) {
	170	push(@network, $netsettings{'ORANGE_ADDRESS'} );
	171	push(@masklen, '255.255.255.255' );
	172	push(@colour, ${Header::colourovpn} );
	173	}
	174	}
6e13d0a5	175
d9ac41d5	176	open(IPSEC, "${General::swroot}/var/ipfire/vpn/config");
75bc929e MT	177	my @ipsec = <IPSEC>;
75bc929e MT	178	close(IPSEC);
7dbf47dc	179
75bc929e MT	180	foreach my $line (@ipsec) {
	181	my @vpn = split(',', $line);
	182	my ($network, $mask) = split("/", $vpn[12]);
6e13d0a5	183
75bc929e MT	184	if (!&General::validip($mask)) {
	185	$mask = ipv4_cidr2msk($mask);
	186	}
ac1cfefa	187
75bc929e MT	188	push(@network, $network);
	189	push(@masklen, $mask);
	190	push(@colour, ${Header::colourvpn});
ac1cfefa	191	}
ac1cfefa	192
d9ac41d5 MT	193	if (-e "${General::swroot}/ovpn/n2nconf") {
	194	open(OVPNN2N, "${General::swroot}/ovpn/ovpnconfig");
	195	my @ovpnn2n = <OVPNN2N>;
	196	close(OVPNN2N);
	197
	198	foreach my $line (@ovpnn2n) {
	199	my @ovpn = split(',', $line);
	200	next if ($ovpn[4] ne 'net');
	201
	202	my ($network, $mask) = split("/", $ovpn[12]);
	203	if (!&General::validip($mask)) {
	204	$mask = ipv4_cidr2msk($mask);
	205	}
	206
	207	push(@network, $network);
	208	push(@masklen, $mask);
	209	push(@colour, ${Header::colourovpn});
	210	}
	211	}
	212
75bc929e MT	213	# Show the page.
	214	&Header::openpage($Lang::tr{'connections'}, 1, '');
	215	&Header::openbigbox('100%', 'left');
	216	&Header::openbox('100%', 'left', $Lang::tr{'connection tracking'});
c2b15814	217
75bc929e MT	218	# Print legend.
	219	print <<END;
	220	<table width='100%'>
	221	<tr>
	222	<td align='center'>
	223	<b>$Lang::tr{'legend'} : </b>
	224	</td>
	225	<td align='center' bgcolor='${Header::colourgreen}'>
	226	<b><font color='#FFFFFF'>$Lang::tr{'lan'}</font></b>
	227	</td>
	228	<td align='center' bgcolor='${Header::colourred}'>
	229	<b><font color='#FFFFFF'>$Lang::tr{'internet'}</font></b>
	230	</td>
	231	<td align='center' bgcolor='${Header::colourorange}'>
	232	<b><font color='#FFFFFF'>$Lang::tr{'dmz'}</font></b>
	233	</td>
	234	<td align='center' bgcolor='${Header::colourblue}'>
	235	<b><font color='#FFFFFF'>$Lang::tr{'wireless'}</font></b>
	236	</td>
	237	<td align='center' bgcolor='${Header::colourfw}'>
	238	<b><font color='#FFFFFF'>IPFire</font></b>
	239	</td>
	240	<td align='center' bgcolor='${Header::colourvpn}'>
	241	<b><font color='#FFFFFF'>$Lang::tr{'vpn'}</font></b>
	242	</td>
	243	<td align='center' bgcolor='${Header::colourovpn}'>
	244	<b><font color='#FFFFFF'>$Lang::tr{'OpenVPN'}</font></b>
	245	</td>
	246	</tr>
	247	</table>
	248	<br>
	249	END
c2b15814	250
75bc929e MT	251	# Print table header.
	252	print <<END;
	253	<table width='100%'>
	254	<tr>
	255	<th align='center'>
	256	$Lang::tr{'protocol'}
	257	</th>
	258	<th align='center'>
	259	$Lang::tr{'source ip and port'}
	260	</th>
	261	<th> </th>
	262	<th align='center'>
	263	$Lang::tr{'dest ip and port'}
	264	</th>
	265	<th> </th>
	266	<th align='center'>
	267	$Lang::tr{'download'} /
	268	<br>$Lang::tr{'upload'}
	269	</th>
	270	<th align='center'>
	271	$Lang::tr{'connection'}<br>$Lang::tr{'status'}
	272	</th>
	273	<th align='center'>
	274	$Lang::tr{'expires'}<br>($Lang::tr{'seconds'})
	275	</th>
	276	</tr>
	277	END
c2b15814	278
75bc929e MT	279	foreach my $line (@conntrack) {
75bc929e MT	280	my @conn = split(' ', $line);
c2b15814	281
75bc929e MT	282	# The first bit is the l3 protocol.
75bc929e MT	283	my $l3proto = $conn[0];
c2b15814	284
75bc929e MT	285	# Skip everything that is not IPv4.
	286	if ($l3proto ne 'ipv4') {
	287	next;
	288	}
ac1cfefa	289
75bc929e MT	290	# L4 protocol (tcp, udp, ...).
75bc929e MT	291	my $l4proto = $conn[2];
c2b15814	292
75bc929e MT	293	if ($l4proto eq 'unknown') {
	294	$l4proto = '';
	295	}
4809e64e	296
75bc929e MT	297	# Source and destination.
	298	my $sip;
	299	my $dip;
	300	my $sport;
	301	my $dport;
	302	my @packets;
	303	my @bytes;
	304
	305	my $ttl = $conn[4];
	306	my $state;
	307	if ($l4proto eq 'tcp') {
	308	$state = $conn[5];
	309	}
c2b15814	310
75bc929e MT	311	# Kick out everything that is not IPv4.
	312	foreach my $item (@conn) {
	313	my ($key, $val) = split('=', $item);
	314
	315	switch ($key) {
	316	case "src" {
	317	$sip = $val;
	318	}
	319	case "dst" {
	320	$dip = $val;
	321	}
	322	case "sport" {
	323	$sport = $val;
	324	}
	325	case "dport" {
	326	$dport = $val;
	327	}
	328	case "packets" {
	329	push(@packets, $val);
	330	}
	331	case "bytes" {
	332	push(@bytes, $val);
	333	}
	334	}
	335	}
1465b127	336
75bc929e MT	337	my $sip_colour = ipcolour($sip);
75bc929e MT	338	my $dip_colour = ipcolour($dip);
1465b127 MT	339
	340	my $sserv = '';
	341	if ($sport < 1024) {
75bc929e MT	342	$sserv = uc(getservbyport($sport, lc($l4proto)));
	343	if ($sserv ne '') {
	344	$sserv = " ($sserv)";
	345	}
1465b127 MT	346	}
	347
	348	my $dserv = '';
	349	if ($dport < 1024) {
75bc929e MT	350	$dserv = uc(getservbyport($dport, lc($l4proto)));
	351	if ($dserv ne '') {
	352	$dserv = " ($dserv)";
	353	}
1465b127 MT	354	}
1465b127 MT	355
75bc929e MT	356	my $bytes_in = format_bytes($bytes[0]);
	357	my $bytes_out = format_bytes($bytes[1]);
	358
	359	# Format TTL
	360	$ttl = format_time($ttl);
	361
	362	print <<END;
	363	<tr>
	364	<td align='center'>$l4proto</td>
	365	<td align='center' bgcolor='$sip_colour'>
	366	<a href='/cgi-bin/ipinfo.cgi?ip=$sip'>
	367	<font color='#FFFFFF'>$sip</font>
	368	</a>
	369	</td>
	370	<td align='center' bgcolor='$sip_colour'>
	371	<a href='http://isc.sans.org/port_details.php?port=$sport' target='top'>
	372	<font color='#FFFFFF'>$sport$sserv</font>
	373	</a>
	374	</td>
	375	<td align='center' bgcolor='$dip_colour'>
	376	<a href='/cgi-bin/ipinfo.cgi?ip=$dip'>
	377	<font color='#FFFFFF'>$dip</font>
	378	</a>
	379	</td>
	380	<td align='center' bgcolor='$dip_colour'>
	381	<a href='http://isc.sans.org/port_details.php?port=$dport' target='top'>
	382	<font color='#FFFFFF'>$dport$dserv</font>
	383	</a>
	384	</td>
	385	<td align='center'>
	386	$bytes_in / $bytes_out
	387	</td>
	388	<td align='center'>$state</td>
	389	<td align='center'>$ttl</td>
	390	</tr>
ac1cfefa	391	END
ac1cfefa	392	}
c2b15814	393
75bc929e MT	394	# Close the main table.
75bc929e MT	395	print "</table>";
ac1cfefa MT	396
	397	&Header::closebox();
	398	&Header::closebigbox();
	399	&Header::closepage();
	400
75bc929e MT	401	sub format_bytes($) {
	402	my $bytes = shift;
	403	my @units = ("B", "k", "M", "G", "T");
	404
	405	foreach my $unit (@units) {
	406	if ($bytes < 1024) {
	407	return sprintf("%d%s", $bytes, $unit);
	408	}
c2b15814	409
75bc929e MT	410	$bytes /= 1024;
	411	}
	412
	413	return sprintf("%d%s", $bytes, $units[$#units]);
c2b15814 MT	414	}
c2b15814 MT	415
75bc929e MT	416	sub format_time($) {
75bc929e MT	417	my $time = shift;
c2b15814	418
75bc929e MT	419	my $seconds = $time % 60;
75bc929e MT	420	my $minutes = $time / 60;
c2b15814	421
75bc929e MT	422	my $hours = 0;
	423	if ($minutes >= 60) {
	424	$hours = $minutes / 60;
	425	$minutes %= 60;
	426	}
	427
	428	return sprintf("%3d:%02d:%02d", $hours, $minutes, $seconds);
c2b15814 MT	429	}
c2b15814 MT	430
75bc929e MT	431	sub ipcolour($) {
	432	my $id = 0;
	433	my $colour = ${Header::colourred};
	434	my ($ip) = $_[0];
	435	my $found = 0;
	436
	437	foreach my $line (@network) {
	438	if ($network[$id] eq '') {
	439	$id++;
	440	} else {
	441	if (!$found && ipv4_in_network($network[$id], $masklen[$id], $ip) ) {
	442	$found = 1;
	443	$colour = $colour[$id];
	444	}
	445	$id++;
	446	}
	447	}
	448
	449	return $colour;
c2b15814 MT	450	}
	451
	452	1;