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