Be a little more robust.
[people/pmueller/ipfire-2.x.git] / config / outgoingfw / outgoingfw.pl
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dba3aa2b 1#!/usr/bin/perl
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2###############################################################################
3# #
4# IPFire.org - A linux based firewall #
bd4ea3c2 5# Copyright (C) 2005-2010 IPFire Team #
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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###############################################################################
21
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22
23use strict;
24# enable only the following on debugging purpose
25#use warnings;
26
27require '/var/ipfire/general-functions.pl';
28
29my %outfwsettings = ();
30my %checked = ();
31my %selected= () ;
32my %netsettings = ();
33my $errormessage = "";
34my $configentry = "";
35my @configs = ();
36my @configline = ();
37my $p2pentry = "";
38my @p2ps = ();
39my @p2pline = ();
ebb9187c 40my $CMD = "";
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41my $P2PSTRING = "";
42
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43my $DEBUG = 0;
44
45my $configfile = "/var/ipfire/outgoing/rules";
46my $p2pfile = "/var/ipfire/outgoing/p2protocols";
47
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48### Values that have to be initialized
49$outfwsettings{'ACTION'} = '';
50$outfwsettings{'VALID'} = 'yes';
51$outfwsettings{'EDIT'} = 'no';
52$outfwsettings{'NAME'} = '';
53$outfwsettings{'SNET'} = '';
54$outfwsettings{'SIP'} = '';
55$outfwsettings{'SPORT'} = '';
56$outfwsettings{'SMAC'} = '';
57$outfwsettings{'DIP'} = '';
58$outfwsettings{'DPORT'} = '';
59$outfwsettings{'PROT'} = '';
60$outfwsettings{'STATE'} = '';
61$outfwsettings{'DISPLAY_DIP'} = '';
62$outfwsettings{'DISPLAY_DPORT'} = '';
63$outfwsettings{'DISPLAY_SMAC'} = '';
64$outfwsettings{'DISPLAY_SIP'} = '';
65$outfwsettings{'POLICY'} = 'MODE0';
39008af7 66
fdeaa057 67my @SOURCE = "";
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68my $SOURCE = "";
69my $DESTINATION = "";
fdeaa057 70my @PROTO = "";
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71my $PROTO = "";
72my $DPORT = "";
73my $DEV = "";
74my $MAC = "";
75my $POLICY = "";
76my $DO = "";
39008af7 77my $DAY = "";
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78
79# read files
80&General::readhash("${General::swroot}/outgoing/settings", \%outfwsettings);
81&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
82
ed828642 83$netsettings{'RED_DEV'}=`cat /var/ipfire/red/iface`;
39008af7 84$netsettings{'RED_IP'}=`cat /var/ipfire/red/local-ipaddress`;
ed828642 85
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86open( FILE, "< $configfile" ) or die "Unable to read $configfile";
87@configs = <FILE>;
88close FILE;
89
b4f8d26c 90if ( $outfwsettings{'POLICY'} eq 'MODE1' ) {
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91 $outfwsettings{'STATE'} = "ALLOW";
92 $POLICY = "DROP";
4cb74dce 93 $DO = "ACCEPT";
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94} elsif ( $outfwsettings{'POLICY'} eq 'MODE2' ) {
95 $outfwsettings{'STATE'} = "DENY";
96 $POLICY = "ACCEPT";
d9716b06 97 $DO = "DROP -m comment --comment 'DROP_OUTGOINGFW '";
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98}
99
100### Initialize IPTables
101system("/sbin/iptables --flush OUTGOINGFW >/dev/null 2>&1");
102system("/sbin/iptables --delete-chain OUTGOINGFW >/dev/null 2>&1");
103system("/sbin/iptables -N OUTGOINGFW >/dev/null 2>&1");
104
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105system("/sbin/iptables --flush OUTGOINGFWMAC >/dev/null 2>&1");
106system("/sbin/iptables --delete-chain OUTGOINGFWMAC >/dev/null 2>&1");
107system("/sbin/iptables -N OUTGOINGFWMAC >/dev/null 2>&1");
108
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109if ( $outfwsettings{'POLICY'} eq 'MODE0' ) {
110 exit 0
111}
112
113if ( $outfwsettings{'POLICY'} eq 'MODE1' ) {
4cb74dce 114 $CMD = "/sbin/iptables -A OUTGOINGFW -m state --state ESTABLISHED,RELATED -j ACCEPT";
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115 if ($DEBUG) { print "$CMD\n"; } else { system("$CMD"); }
116 $CMD = "/sbin/iptables -A OUTGOINGFWMAC -m state --state ESTABLISHED,RELATED -j ACCEPT";
b4f8d26c 117 if ($DEBUG) { print "$CMD\n"; } else { system("$CMD"); }
4cb74dce 118 $CMD = "/sbin/iptables -A OUTGOINGFW -p icmp -j ACCEPT";
b4f8d26c 119 if ($DEBUG) { print "$CMD\n"; } else { system("$CMD"); }
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120 $CMD = "/sbin/iptables -A OUTGOINGFWMAC -p icmp -j ACCEPT";
121 if ($DEBUG) { print "$CMD\n"; } else { system("$CMD"); }
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122}
123
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124foreach $configentry (sort @configs)
125{
fdeaa057 126 @SOURCE = "";
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127 $DESTINATION = "";
128 $PROTO = "";
129 $DPORT = "";
130 $DEV = "";
131 $MAC = "";
132 @configline = split( /\;/, $configentry );
fdeaa057 133
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134 if ($outfwsettings{'STATE'} eq $configline[0]) {
135 if ($configline[2] eq 'green') {
fdeaa057 136 @SOURCE = ("$netsettings{'GREEN_NETADDRESS'}/$netsettings{'GREEN_NETMASK'}");
ebb9187c 137 $DEV = $netsettings{'GREEN_DEV'};
39008af7 138 } elsif ($configline[2] eq 'red') {
fdeaa057 139 @SOURCE = ("$netsettings{'RED_IP'}");
39008af7 140 $DEV = "";
ebb9187c 141 } elsif ($configline[2] eq 'blue') {
fdeaa057 142 @SOURCE = ("$netsettings{'BLUE_NETADDRESS'}/$netsettings{'BLUE_NETMASK'}");
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143 $DEV = $netsettings{'BLUE_DEV'};
144 } elsif ($configline[2] eq 'orange') {
fdeaa057 145 @SOURCE = ("$netsettings{'ORANGE_NETADDRESS'}/$netsettings{'ORANGE_NETMASK'}");
ebb9187c 146 $DEV = $netsettings{'ORANGE_DEV'};
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147 } elsif ($configline[2] eq 'ipsec') {
148 @SOURCE = "";
149 $DEV = "ipsec+";
150 } elsif ($configline[2] eq 'ovpn') {
151 @SOURCE = "";
152 $DEV = "tun+";
ebb9187c 153 } elsif ($configline[2] eq 'ip') {
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154 @SOURCE = ("$configline[5]");
155 $DEV = "";
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156 } elsif ($configline[2] eq 'mac') {
157 @SOURCE = ("$configline[6]");
158 $DEV = "";
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159 } elsif ($configline[2] eq 'all') {
160 @SOURCE = ("0/0");
161 $DEV = "";
fdeaa057 162 } else {
d9716b06 163 if ( -e "/var/ipfire/outgoing/groups/ipgroups/$configline[2]" ) {
fdeaa057 164 @SOURCE = `cat /var/ipfire/outgoing/groups/ipgroups/$configline[2]`;
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165 } elsif ( -e "/var/ipfire/outgoing/groups/macgroups/$configline[2]" ) {
166 @SOURCE = `cat /var/ipfire/outgoing/groups/macgroups/$configline[2]`;
bd4ea3c2 167 $configline[2] = "mac";
fdeaa057 168 }
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169 $DEV = "";
170 }
171
172 if ($configline[7]) { $DESTINATION = "$configline[7]"; } else { $DESTINATION = "0/0"; }
d9716b06 173
b4f8d26c 174 if ($configline[3] eq 'tcp') {
fdeaa057 175 @PROTO = ("tcp");
b4f8d26c 176 } elsif ($configline[3] eq 'udp') {
fdeaa057 177 @PROTO = ("udp");
c791bb2a 178 } elsif ($configline[3] eq 'esp') {
fdeaa057 179 @PROTO = ("esp");
c791bb2a 180 } elsif ($configline[3] eq 'gre') {
fdeaa057 181 @PROTO = ("gre");
b4f8d26c 182 } else {
fdeaa057 183 @PROTO = ("tcp","udp");
b4f8d26c 184 }
4cb74dce 185
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186 foreach $PROTO (@PROTO){
187 foreach $SOURCE (@SOURCE) {
188 $SOURCE =~ s/\s//gi;
189
d9716b06 190 if ( $SOURCE eq "" ){next;}
fdeaa057 191
70248550 192 if ( ( $configline[6] ne "" || $configline[2] eq 'mac' ) && $configline[2] ne 'all'){
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193 $SOURCE =~ s/[^a-zA-Z0-9]/:/gi;
194 $CMD = "/sbin/iptables -A OUTGOINGFWMAC -m mac --mac-source $SOURCE -d $DESTINATION -p $PROTO";
195 } else {
196 $CMD = "/sbin/iptables -A OUTGOINGFW -s $SOURCE -d $DESTINATION -p $PROTO";
197 }
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198
199 if ($configline[8] && ( $configline[3] ne 'esp' || $configline[3] ne 'gre') ) {
200 $DPORT = "$configline[8]";
201 $CMD = "$CMD -m multiport --destination-port $DPORT";
202 }
203
204 if ($DEV) {
205 $CMD = "$CMD -i $DEV";
206 }
207
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208 if ($configline[17] && $configline[18]) {
209 if ($configline[10]){$DAY = "Mon,"}
210 if ($configline[11]){$DAY .= "Tue,"}
211 if ($configline[12]){$DAY .= "Wed,"}
212 if ($configline[13]){$DAY .= "Thu,"}
213 if ($configline[14]){$DAY .= "Fri,"}
214 if ($configline[15]){$DAY .= "Sat,"}
215 if ($configline[16]){$DAY .= "Sun"}
216 $CMD = "$CMD -m time --timestart $configline[17] --timestop $configline[18] --weekdays $DAY";
217 }
218
219 $CMD = "$CMD -o $netsettings{'RED_DEV'}";
220
221 if ($configline[9] eq "aktiv") {
222 if ($DEBUG) {
d92a7932 223 print "$CMD -m limit --limit 10/minute -j LOG --log-prefix 'DROP_OUTGOINGFW '\n";
fdeaa057 224 } else {
d92a7932 225 system("$CMD -m limit --limit 10/minute -j LOG --log-prefix 'DROP_OUTGOINGFW '");
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226 }
227 }
228
4cb74dce 229 if ($DEBUG) {
fdeaa057 230 print "$CMD -j $DO\n";
4cb74dce 231 } else {
fdeaa057 232 system("$CMD -j $DO");
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233 }
234 }
fdeaa057 235 }
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236 }
237}
ebb9187c 238
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239### Do the P2P-Stuff here
240open( FILE, "< $p2pfile" ) or die "Unable to read $p2pfile";
241@p2ps = <FILE>;
242close FILE;
ebb9187c 243
b4f8d26c 244$CMD = "/sbin/iptables -A OUTGOINGFW -m ipp2p";
ebb9187c 245
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246foreach $p2pentry (sort @p2ps)
247{
248 @p2pline = split( /\;/, $p2pentry );
249 if ( $outfwsettings{'POLICY'} eq 'MODE2' ) {
250 $DO = "DROP";
251 if ("$p2pline[2]" eq "off") {
252 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
253 }
254 } else {
4cb74dce 255 $DO = "ACCEPT";
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256 if ("$p2pline[2]" eq "on") {
257 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
ebb9187c 258 }
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259 }
260}
261if ($P2PSTRING) {
262 if ($DEBUG) {
263 print "$CMD $P2PSTRING -j $DO\n";
264 } else {
265 system("$CMD $P2PSTRING -j $DO");
266 }
267}
ebb9187c 268
b4f8d26c 269if ( $outfwsettings{'POLICY'} eq 'MODE1' ) {
52802b5f 270 if ( $outfwsettings{'MODE1LOG'} eq 'on' ) {
d92a7932 271 $CMD = "/sbin/iptables -A OUTGOINGFW -o $netsettings{'RED_DEV'} -m limit --limit 10/minute -j LOG --log-prefix 'DROP_OUTGOINGFW '";
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272 if ($DEBUG) {
273 print "$CMD\n";
274 } else {
275 system("$CMD");
276 }
277 }
278
d9716b06 279 $CMD = "/sbin/iptables -A OUTGOINGFW -o $netsettings{'RED_DEV'} -j DROP -m comment --comment 'DROP_OUTGOINGFW '";
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280 if ($DEBUG) {
281 print "$CMD\n";
282 } else {
283 system("$CMD");
ebb9187c 284 }
d9716b06 285}