[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";

my $colour_multicast = "#A0A0A0";

&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 Firewall Interface
push(@network, $netsettings{'ORANGE_ADDRESS'});
push(@masklen, "255.255.255.255" );
push(@colour, ${Header::colourfw} );

# 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} );
	}
}

# Highlight multicast connections.
push(@network, "224.0.0.0");
push(@masklen, "239.0.0.0");
push(@colour, $colour_multicast);

# 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}/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>
			<td align='center' bgcolor='$colour_multicast'>
				<b><font color='#FFFFFF'>Multicast</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];

	# Translate unknown protocols.
	if ($l4proto eq 'unknown') {
		my $l4protonum = $conn[3];
		if ($l4protonum eq '2') {
			$l4proto = 'IGMP';
		} elsif ($l4protonum eq '4') {
			$l4proto = 'IPv4 Encap';
		} elsif ($l4protonum eq '33') {
			$l4proto = 'DCCP';
		} elsif ($l4protonum eq '41') {
			$l4proto = 'IPv6 Encap';
		} elsif ($l4protonum eq '50') {
			$l4proto = 'ESP';
		} elsif ($l4protonum eq '51') {
			$l4proto = 'AH';
		} elsif ($l4protonum eq '132') {
			$l4proto = 'SCTP';
		} else {
			$l4proto = $l4protonum;
		}
	} else {
		$l4proto = uc($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
c8a8778f MT	35	my $colour_multicast = "#A0A0A0";
c8a8778f MT	36
75bc929e MT	37	&Header::showhttpheaders();
	38
	39	my @network=();
	40	my @masklen=();
	41	my @colour=();
	42
	43	my %netsettings=();
	44	&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
	45
ac1cfefa MT	46	#workaround to suppress a warning when a variable is used only once
	47	my @dummy = ( ${Header::table1colour} );
	48	undef (@dummy);
	49
75bc929e MT	50	# Read the connection tracking table.
	51	open(CONNTRACK, "/usr/local/bin/getconntracktable \| sort -k 5,5 --numeric-sort --reverse \|") or die "Unable to read conntrack table";
	52	my @conntrack = <CONNTRACK>;
	53	close(CONNTRACK);
ac1cfefa	54
75bc929e	55	# Collect data for the @network array.
ac1cfefa	56
75bc929e MT	57	# Add Firewall Localhost 127.0.0.1
	58	push(@network, '127.0.0.1');
	59	push(@masklen, '255.255.255.255');
	60	push(@colour, ${Header::colourfw});
ac1cfefa	61
2c42fe6a	62	if (open(IP, "${General::swroot}/red/local-ipaddress")) {
75bc929e MT	63	my $redip = <IP>;
	64	close(IP);
	65
	66	chomp $redip;
	67	push(@network, $redip);
	68	push(@masklen, '255.255.255.255');
	69	push(@colour, ${Header::colourfw});
2c42fe6a MT	70	}
2c42fe6a MT	71
75bc929e MT	72	# Add STATIC RED aliases
	73	if ($netsettings{'RED_DEV'}) {
	74	my $aliasfile = "${General::swroot}/ethernet/aliases";
	75	open(ALIASES, $aliasfile) or die 'Unable to open aliases file.';
	76	my @aliases = <ALIASES>;
	77	close(ALIASES);
	78
	79	# We have a RED eth iface
	80	if ($netsettings{'RED_TYPE'} eq 'STATIC') {
	81	# We have a STATIC RED eth iface
	82	foreach my $line (@aliases) {
	83	chomp($line);
	84	my @temp = split(/\,/,$line);
	85	if ($temp[0]) {
	86	push(@network, $temp[0]);
	87	push(@masklen, $netsettings{'RED_NETMASK'} );
	88	push(@colour, ${Header::colourfw} );
	89	}
	90	}
	91	}
	92	}
ac1cfefa MT	93
	94	# Add Green Firewall Interface
	95	push(@network, $netsettings{'GREEN_ADDRESS'});
	96	push(@masklen, "255.255.255.255" );
	97	push(@colour, ${Header::colourfw} );
	98
	99	# Add Green Network to Array
	100	push(@network, $netsettings{'GREEN_NETADDRESS'});
	101	push(@masklen, $netsettings{'GREEN_NETMASK'} );
	102	push(@colour, ${Header::colourgreen} );
	103
	104	# Add Green Routes to Array
	105	my @routes = `/sbin/route -n \| /bin/grep $netsettings{'GREEN_DEV'}`;
	106	foreach my $route (@routes) {
75bc929e MT	107	chomp($route);
	108	my @temp = split(/[\t ]+/, $route);
	109	push(@network, $temp[0]);
	110	push(@masklen, $temp[2]);
	111	push(@colour, ${Header::colourgreen} );
5433e2c9 MT	112	}
5433e2c9 MT	113
f9aaffa6 MT	114	# Add Blue Firewall Interface
	115	push(@network, $netsettings{'BLUE_ADDRESS'});
	116	push(@masklen, "255.255.255.255" );
	117	push(@colour, ${Header::colourfw} );
	118
5433e2c9 MT	119	# Add Blue Network
5433e2c9 MT	120	if ($netsettings{'BLUE_DEV'}) {
75bc929e MT	121	push(@network, $netsettings{'BLUE_NETADDRESS'});
	122	push(@masklen, $netsettings{'BLUE_NETMASK'} );
	123	push(@colour, ${Header::colourblue} );
	124
	125	# Add Blue Routes to Array
	126	@routes = `/sbin/route -n \| /bin/grep $netsettings{'BLUE_DEV'}`;
	127	foreach my $route (@routes) {
	128	chomp($route);
	129	my @temp = split(/[\t ]+/, $route);
	130	push(@network, $temp[0]);
	131	push(@masklen, $temp[2]);
	132	push(@colour, ${Header::colourblue} );
	133	}
	134	}
	135
5ac2ed47 MT	136	# Add Orange Firewall Interface
	137	push(@network, $netsettings{'ORANGE_ADDRESS'});
	138	push(@masklen, "255.255.255.255" );
	139	push(@colour, ${Header::colourfw} );
	140
75bc929e MT	141	# Add Orange Network
	142	if ($netsettings{'ORANGE_DEV'}) {
	143	push(@network, $netsettings{'ORANGE_NETADDRESS'});
	144	push(@masklen, $netsettings{'ORANGE_NETMASK'} );
	145	push(@colour, ${Header::colourorange} );
	146	# Add Orange Routes to Array
	147	@routes = `/sbin/route -n \| /bin/grep $netsettings{'ORANGE_DEV'}`;
	148	foreach my $route (@routes) {
	149	chomp($route);
	150	my @temp = split(/[\t ]+/, $route);
	151	push(@network, $temp[0]);
	152	push(@masklen, $temp[2]);
	153	push(@colour, ${Header::colourorange} );
	154	}
5433e2c9 MT	155	}
5433e2c9 MT	156
c8a8778f MT	157	# Highlight multicast connections.
	158	push(@network, "224.0.0.0");
	159	push(@masklen, "239.0.0.0");
	160	push(@colour, $colour_multicast);
	161
6e13d0a5 MT	162	# Add OpenVPN net and RED/BLUE/ORANGE entry (when appropriate)
6e13d0a5 MT	163	if (-e "${General::swroot}/ovpn/settings") {
75bc929e MT	164	my %ovpnsettings = ();
	165	&General::readhash("${General::swroot}/ovpn/settings", \%ovpnsettings);
	166	my @tempovpnsubnet = split("\/",$ovpnsettings{'DOVPN_SUBNET'});
	167
	168	# add OpenVPN net
	169	push(@network, $tempovpnsubnet[0]);
	170	push(@masklen, $tempovpnsubnet[1]);
	171	push(@colour, ${Header::colourovpn} );
	172
	173	# add BLUE:port / proto
	174	if (($ovpnsettings{'ENABLED_BLUE'} eq 'on') && $netsettings{'BLUE_DEV'}) {
	175	push(@network, $netsettings{'BLUE_ADDRESS'} );
	176	push(@masklen, '255.255.255.255' );
	177	push(@colour, ${Header::colourovpn});
	178	}
6e13d0a5	179
75bc929e MT	180	# add ORANGE:port / proto
	181	if (($ovpnsettings{'ENABLED_ORANGE'} eq 'on') && $netsettings{'ORANGE_DEV'}) {
	182	push(@network, $netsettings{'ORANGE_ADDRESS'} );
	183	push(@masklen, '255.255.255.255' );
	184	push(@colour, ${Header::colourovpn} );
	185	}
	186	}
6e13d0a5	187
03435d85	188	open(IPSEC, "${General::swroot}/vpn/config");
75bc929e MT	189	my @ipsec = <IPSEC>;
75bc929e MT	190	close(IPSEC);
7dbf47dc	191
75bc929e MT	192	foreach my $line (@ipsec) {
	193	my @vpn = split(',', $line);
	194	my ($network, $mask) = split("/", $vpn[12]);
6e13d0a5	195
75bc929e MT	196	if (!&General::validip($mask)) {
	197	$mask = ipv4_cidr2msk($mask);
	198	}
ac1cfefa	199
75bc929e MT	200	push(@network, $network);
	201	push(@masklen, $mask);
	202	push(@colour, ${Header::colourvpn});
ac1cfefa	203	}
ac1cfefa	204
d9ac41d5 MT	205	if (-e "${General::swroot}/ovpn/n2nconf") {
	206	open(OVPNN2N, "${General::swroot}/ovpn/ovpnconfig");
	207	my @ovpnn2n = <OVPNN2N>;
	208	close(OVPNN2N);
	209
	210	foreach my $line (@ovpnn2n) {
	211	my @ovpn = split(',', $line);
	212	next if ($ovpn[4] ne 'net');
	213
	214	my ($network, $mask) = split("/", $ovpn[12]);
	215	if (!&General::validip($mask)) {
	216	$mask = ipv4_cidr2msk($mask);
	217	}
	218
	219	push(@network, $network);
	220	push(@masklen, $mask);
	221	push(@colour, ${Header::colourovpn});
	222	}
	223	}
	224
75bc929e MT	225	# Show the page.
	226	&Header::openpage($Lang::tr{'connections'}, 1, '');
	227	&Header::openbigbox('100%', 'left');
	228	&Header::openbox('100%', 'left', $Lang::tr{'connection tracking'});
c2b15814	229
75bc929e MT	230	# Print legend.
	231	print <<END;
	232	<table width='100%'>
	233	<tr>
	234	<td align='center'>
	235	<b>$Lang::tr{'legend'} : </b>
	236	</td>
	237	<td align='center' bgcolor='${Header::colourgreen}'>
	238	<b><font color='#FFFFFF'>$Lang::tr{'lan'}</font></b>
	239	</td>
	240	<td align='center' bgcolor='${Header::colourred}'>
	241	<b><font color='#FFFFFF'>$Lang::tr{'internet'}</font></b>
	242	</td>
	243	<td align='center' bgcolor='${Header::colourorange}'>
	244	<b><font color='#FFFFFF'>$Lang::tr{'dmz'}</font></b>
	245	</td>
	246	<td align='center' bgcolor='${Header::colourblue}'>
	247	<b><font color='#FFFFFF'>$Lang::tr{'wireless'}</font></b>
	248	</td>
	249	<td align='center' bgcolor='${Header::colourfw}'>
	250	<b><font color='#FFFFFF'>IPFire</font></b>
	251	</td>
	252	<td align='center' bgcolor='${Header::colourvpn}'>
	253	<b><font color='#FFFFFF'>$Lang::tr{'vpn'}</font></b>
	254	</td>
	255	<td align='center' bgcolor='${Header::colourovpn}'>
	256	<b><font color='#FFFFFF'>$Lang::tr{'OpenVPN'}</font></b>
	257	</td>
c8a8778f MT	258	<td align='center' bgcolor='$colour_multicast'>
	259	<b><font color='#FFFFFF'>Multicast</font></b>
	260	</td>
75bc929e MT	261	</tr>
	262	</table>
	263	<br>
	264	END
c2b15814	265
75bc929e MT	266	# Print table header.
	267	print <<END;
	268	<table width='100%'>
	269	<tr>
	270	<th align='center'>
	271	$Lang::tr{'protocol'}
	272	</th>
	273	<th align='center'>
	274	$Lang::tr{'source ip and port'}
	275	</th>
	276	<th> </th>
	277	<th align='center'>
	278	$Lang::tr{'dest ip and port'}
	279	</th>
	280	<th> </th>
	281	<th align='center'>
	282	$Lang::tr{'download'} /
	283	<br>$Lang::tr{'upload'}
	284	</th>
	285	<th align='center'>
	286	$Lang::tr{'connection'}<br>$Lang::tr{'status'}
	287	</th>
	288	<th align='center'>
	289	$Lang::tr{'expires'}<br>($Lang::tr{'seconds'})
	290	</th>
	291	</tr>
	292	END
c2b15814	293
75bc929e MT	294	foreach my $line (@conntrack) {
75bc929e MT	295	my @conn = split(' ', $line);
c2b15814	296
75bc929e MT	297	# The first bit is the l3 protocol.
75bc929e MT	298	my $l3proto = $conn[0];
c2b15814	299
75bc929e MT	300	# Skip everything that is not IPv4.
	301	if ($l3proto ne 'ipv4') {
	302	next;
	303	}
ac1cfefa	304
75bc929e MT	305	# L4 protocol (tcp, udp, ...).
75bc929e MT	306	my $l4proto = $conn[2];
c2b15814	307
7d55ca0d	308	# Translate unknown protocols.
75bc929e	309	if ($l4proto eq 'unknown') {
7d55ca0d MT	310	my $l4protonum = $conn[3];
	311	if ($l4protonum eq '2') {
	312	$l4proto = 'IGMP';
	313	} elsif ($l4protonum eq '4') {
	314	$l4proto = 'IPv4 Encap';
	315	} elsif ($l4protonum eq '33') {
	316	$l4proto = 'DCCP';
	317	} elsif ($l4protonum eq '41') {
	318	$l4proto = 'IPv6 Encap';
	319	} elsif ($l4protonum eq '50') {
	320	$l4proto = 'ESP';
	321	} elsif ($l4protonum eq '51') {
	322	$l4proto = 'AH';
	323	} elsif ($l4protonum eq '132') {
	324	$l4proto = 'SCTP';
	325	} else {
	326	$l4proto = $l4protonum;
	327	}
	328	} else {
	329	$l4proto = uc($l4proto);
75bc929e	330	}
4809e64e	331
75bc929e MT	332	# Source and destination.
	333	my $sip;
	334	my $dip;
	335	my $sport;
	336	my $dport;
	337	my @packets;
	338	my @bytes;
	339
	340	my $ttl = $conn[4];
	341	my $state;
7d55ca0d	342	if ($l4proto eq 'TCP') {
75bc929e MT	343	$state = $conn[5];
75bc929e MT	344	}
c2b15814	345
75bc929e MT	346	# Kick out everything that is not IPv4.
	347	foreach my $item (@conn) {
	348	my ($key, $val) = split('=', $item);
	349
	350	switch ($key) {
	351	case "src" {
	352	$sip = $val;
	353	}
	354	case "dst" {
	355	$dip = $val;
	356	}
	357	case "sport" {
	358	$sport = $val;
	359	}
	360	case "dport" {
	361	$dport = $val;
	362	}
	363	case "packets" {
	364	push(@packets, $val);
	365	}
	366	case "bytes" {
	367	push(@bytes, $val);
	368	}
	369	}
	370	}
1465b127	371
75bc929e MT	372	my $sip_colour = ipcolour($sip);
75bc929e MT	373	my $dip_colour = ipcolour($dip);
1465b127	374
7d55ca0d MT	375	my $sserv = '';
7d55ca0d MT	376	if ($sport < 1024) {
75bc929e MT	377	$sserv = uc(getservbyport($sport, lc($l4proto)));
	378	if ($sserv ne '') {
	379	$sserv = " ($sserv)";
	380	}
7d55ca0d	381	}
1465b127	382
7d55ca0d MT	383	my $dserv = '';
7d55ca0d MT	384	if ($dport < 1024) {
75bc929e MT	385	$dserv = uc(getservbyport($dport, lc($l4proto)));
	386	if ($dserv ne '') {
	387	$dserv = " ($dserv)";
	388	}
7d55ca0d	389	}
1465b127	390
75bc929e MT	391	my $bytes_in = format_bytes($bytes[0]);
	392	my $bytes_out = format_bytes($bytes[1]);
	393
	394	# Format TTL
	395	$ttl = format_time($ttl);
	396
	397	print <<END;
	398	<tr>
	399	<td align='center'>$l4proto</td>
	400	<td align='center' bgcolor='$sip_colour'>
	401	<a href='/cgi-bin/ipinfo.cgi?ip=$sip'>
	402	<font color='#FFFFFF'>$sip</font>
	403	</a>
	404	</td>
	405	<td align='center' bgcolor='$sip_colour'>
	406	<a href='http://isc.sans.org/port_details.php?port=$sport' target='top'>
	407	<font color='#FFFFFF'>$sport$sserv</font>
	408	</a>
	409	</td>
	410	<td align='center' bgcolor='$dip_colour'>
	411	<a href='/cgi-bin/ipinfo.cgi?ip=$dip'>
	412	<font color='#FFFFFF'>$dip</font>
	413	</a>
	414	</td>
	415	<td align='center' bgcolor='$dip_colour'>
	416	<a href='http://isc.sans.org/port_details.php?port=$dport' target='top'>
	417	<font color='#FFFFFF'>$dport$dserv</font>
	418	</a>
	419	</td>
	420	<td align='center'>
	421	$bytes_in / $bytes_out
	422	</td>
	423	<td align='center'>$state</td>
	424	<td align='center'>$ttl</td>
	425	</tr>
ac1cfefa	426	END
ac1cfefa	427	}
c2b15814	428
75bc929e MT	429	# Close the main table.
75bc929e MT	430	print "</table>";
ac1cfefa MT	431
	432	&Header::closebox();
	433	&Header::closebigbox();
	434	&Header::closepage();
	435
75bc929e MT	436	sub format_bytes($) {
	437	my $bytes = shift;
	438	my @units = ("B", "k", "M", "G", "T");
	439
	440	foreach my $unit (@units) {
	441	if ($bytes < 1024) {
	442	return sprintf("%d%s", $bytes, $unit);
	443	}
c2b15814	444
75bc929e MT	445	$bytes /= 1024;
	446	}
	447
	448	return sprintf("%d%s", $bytes, $units[$#units]);
c2b15814 MT	449	}
c2b15814 MT	450
75bc929e MT	451	sub format_time($) {
75bc929e MT	452	my $time = shift;
c2b15814	453
75bc929e MT	454	my $seconds = $time % 60;
75bc929e MT	455	my $minutes = $time / 60;
c2b15814	456
75bc929e MT	457	my $hours = 0;
	458	if ($minutes >= 60) {
	459	$hours = $minutes / 60;
	460	$minutes %= 60;
	461	}
	462
	463	return sprintf("%3d:%02d:%02d", $hours, $minutes, $seconds);
c2b15814 MT	464	}
c2b15814 MT	465
75bc929e MT	466	sub ipcolour($) {
	467	my $id = 0;
	468	my $colour = ${Header::colourred};
	469	my ($ip) = $_[0];
	470	my $found = 0;
	471
	472	foreach my $line (@network) {
	473	if ($network[$id] eq '') {
	474	$id++;
	475	} else {
	476	if (!$found && ipv4_in_network($network[$id], $masklen[$id], $ip) ) {
	477	$found = 1;
	478	$colour = $colour[$id];
	479	}
	480	$id++;
	481	}
	482	}
	483
	484	return $colour;
c2b15814 MT	485	}
	486
	487	1;