]>
git.ipfire.org Git - people/teissler/ipfire-2.x.git/blob - config/forwardfw/rules.pl
2 ###############################################################################
4 # IPFire.org - A linux based firewall #
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. #
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. #
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/>. #
20 ###############################################################################
22 # Hi folks! I hope this code is useful for all. I needed something to handle #
23 # my VPN Connections in a comfortable way. #
24 # This script builds firewallrules from the webinterface #
25 ###############################################################################
28 no warnings
'uninitialized';
30 # enable only the following on debugging purpose
32 #use CGI::Carp 'fatalsToBrowser';
35 my %defaultNetworks=();
48 require '/var/ipfire/general-functions.pl';
49 require "${General::swroot}/lang.pl";
50 require "${General::swroot}/forward/bin/firewall-lib.pl";
52 my $configfwdfw = "${General::swroot}/forward/config";
53 my $configinput = "${General::swroot}/forward/input";
54 my $p2pfile = "${General::swroot}/forward/p2protocols";
55 my $configgrp = "${General::swroot}/fwhosts/customgroups";
56 my $netsettings = "${General::swroot}/ethernet/settings";
61 my ($TYPE,$PROT,$SPROT,$DPROT,$SPORT,$DPORT,$TIME,$TIMEFROM,$TIMETILL,$SRC_TGT);
62 my $CHAIN="FORWARDFW";
65 &General
::readhash
("${General::swroot}/forward/settings", \
%fwdfwsettings);
66 &General
::readhash
("$netsettings", \
%defaultNetworks);
67 &General
::readhasharray
($configfwdfw, \
%configfwdfw);
68 &General
::readhasharray
($configinput, \
%configinputfw);
69 &General
::readhasharray
($configgrp, \
%customgrp);
70 &General
::get_aliases
(\
%aliases);
72 ################################
74 ################################
75 my $MODE=1; # 0 - normal operation
76 # 1 - print configline and rules to console
78 ################################
81 if($param eq 'flush'){
83 print " Flushing chains...\n";
88 print " Flushing chains...\n";
92 print " Preparing rules...\n";
96 if ($fwdfwsettings{'POLICY'} eq 'MODE1'){
98 system ("/usr/sbin/firewall-forward-policy");
99 }elsif($fwdfwsettings{'POLICY'} eq 'MODE2'){
100 $defaultNetworks{'GREEN_NETMASK'}=&General
::iporsubtocidr
($defaultNetworks{'GREEN_NETMASK'});
101 $green="$defaultNetworks{'GREEN_ADDRESS'}/$defaultNetworks{'GREEN_NETMASK'}";
102 if ($defaultNetworks{'BLUE_DEV'}){
103 $defaultNetworks{'BLUE_NETMASK'}=&General
::iporsubtocidr
($defaultNetworks{'BLUE_NETMASK'});
104 $blue="$defaultNetworks{'BLUE_ADDRESS'}/$defaultNetworks{'BLUE_NETMASK'}";
105 #set default rules for BLUE
106 system ("iptables -A $CHAIN -s $blue -d $green -j RETURN");
108 if ($defaultNetworks{'ORANGE_DEV'}){
109 $defaultNetworks{'ORANGE_NETMASK'}=&General
::iporsubtocidr
($defaultNetworks{'ORANGE_NETMASK'});
110 $orange="$defaultNetworks{'ORANGE_ADDRESS'}/$defaultNetworks{'ORANGE_NETMASK'}";
111 #set default rules for DMZ
112 system ("iptables -A $CHAIN -s $orange -d $green -j RETURN");
113 if ($defaultNetworks{'BLUE_DEV'}){
114 system ("iptables -A $CHAIN -s $orange -d $blue -j RETURN");
119 system ("iptables -A $CHAIN -m state --state NEW -j ACCEPT");
120 system ("/usr/sbin/firewall-forward-policy");
126 system ("iptables -F FORWARDFW");
127 system ("iptables -F INPUTFW");
131 if (! -z
"${General::swroot}/forward/config"){
132 &buildrules
(\
%configfwdfw);
134 if (! -z
"${General::swroot}/forward/input"){
135 &buildrules
(\
%configinputfw);
142 foreach my $key (sort {$a <=> $b} keys %$hash){
144 if($$hash{$key}[2] eq 'ON'){
146 if ($$hash{$key}[3] eq 'cust_grp_src'){
147 foreach my $grp (sort {$a <=> $b} keys %customgrp){
148 if($customgrp{$grp}[0] eq $$hash{$key}[4]){
149 &get_address
($customgrp{$grp}[3],$customgrp{$grp}[2],"src");
153 &get_address
($$hash{$key}[3],$$hash{$key}[4],"src");
156 if ($$hash{$key}[5] eq 'cust_grp_tgt'){
157 foreach my $grp (sort {$a <=> $b} keys %customgrp){
158 if($customgrp{$grp}[0] eq $$hash{$key}[6]){
159 &get_address
($customgrp{$grp}[3],$customgrp{$grp}[2],"tgt");
162 }elsif($$hash{$key}[5] eq 'ipfire'){
164 if($$hash{$key}[6] eq 'Default IP'){
165 open(FILE
, "/var/ipfire/red/local-ipaddress") or die 'Unable to open config file.';
166 $targethash{$key}[0]= <FILE
>;
169 foreach my $alias (sort keys %aliases){
170 if ($$hash{$key}[6] eq $alias){
171 $targethash{$key}[0]=$aliases{$alias}{'IPT'};
176 &get_address
($$hash{$key}[5],$$hash{$key}[6],"tgt");
178 ##get source prot and port
180 $SPROT = &get_prot
($hash,$key);
181 $SPORT = &get_port
($hash,$key);
184 ##get target prot and port
185 $DPROT=&get_prot
($hash,$key);
187 if ($DPROT eq ''){$DPROT=' ';}
188 @DPROT=split(",",$DPROT);
191 if($$hash{$key}[18] eq 'ON'){
192 if($$hash{$key}[19] ne ''){push (@timeframe,"Mon");}
193 if($$hash{$key}[20] ne ''){push (@timeframe,"Tue");}
194 if($$hash{$key}[21] ne ''){push (@timeframe,"Wed");}
195 if($$hash{$key}[22] ne ''){push (@timeframe,"Thu");}
196 if($$hash{$key}[23] ne ''){push (@timeframe,"Fri");}
197 if($$hash{$key}[24] ne ''){push (@timeframe,"Sat");}
198 if($$hash{$key}[25] ne ''){push (@timeframe,"Sun");}
199 $TIME=join(",",@timeframe);
200 $TIMEFROM="--timestart $$hash{$key}[26] ";
201 $TIMETILL="--timestop $$hash{$key}[27] ";
202 $TIME="-m time --weekdays $TIME $TIMEFROM $TIMETILL";
206 foreach my $i (0 .. $#{$$hash{$key}}){
207 print "$i: $$hash{$key}[$i] ";
210 print"##################################\n";
211 #print rules to console
212 foreach my $DPROT (@DPROT){
213 $DPORT = &get_port
($hash,$key,$DPROT);
214 if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;}
215 $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
216 foreach my $a (sort keys %sourcehash){
217 foreach my $b (sort keys %targethash){
218 if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' || $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
219 if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){
220 if(substr($sourcehash{$a}[0], 3, 3) ne 'mac'){ $STAG="-s";}
221 if ($$hash{$key}[17] eq 'ON'){
222 print "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
224 print "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
231 }elsif($MODE eq '0'){
232 foreach my $DPROT (@DPROT){
233 $DPORT = &get_port
($hash,$key,$DPROT);
234 if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;}
235 $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
236 foreach my $a (sort keys %sourcehash){
237 foreach my $b (sort keys %targethash){
238 if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' || $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
239 if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){
240 if(substr($sourcehash{$a}[0], 3, 3) ne 'mac'){ $STAG="-s";}
241 if ($$hash{$key}[17] eq 'ON'){
242 system ("iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG");
244 system ("iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]");
263 open( FILE
, "< $p2pfile" ) or die "Unable to read $p2pfile";
266 my $CMD = "-m ipp2p";
267 foreach my $p2pentry (sort @p2ps) {
268 my @p2pline = split( /\;/, $p2pentry );
269 if ( $fwdfwsettings{'POLICY'} eq 'MODE1' ) {
271 if ("$p2pline[2]" eq "on") {
272 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
276 if ("$p2pline[2]" eq "off") {
277 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
283 print"/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO\n";
287 system("/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO");
294 my $base=shift; #source of checking ($configfwdfw{$key}[x] or groupkey
296 my $type=shift; #src or tgt
303 my $key = &General
::findhasharraykey
($hash);
304 if($base eq 'src_addr' || $base eq 'tgt_addr' ){
305 if (&General
::validmac
($base2)){
306 $$hash{$key}[0] = "-m mac --mac-source $base2";
308 $$hash{$key}[0] = $base2;
310 }elsif($base eq 'std_net_src' || $base eq 'std_net_tgt' || $base eq 'Standard Network'){
311 $$hash{$key}[0]=&fwlib
::get_std_net_ip
($base2);
312 }elsif($base eq 'cust_net_src' || $base eq 'cust_net_tgt' || $base eq 'Custom Network'){
313 $$hash{$key}[0]=&fwlib
::get_net_ip
($base2);
314 }elsif($base eq 'cust_host_src' || $base eq 'cust_host_tgt' || $base eq 'Custom Host'){
315 $$hash{$key}[0]=&fwlib
::get_host_ip
($base2,$type);
316 }elsif($base eq 'ovpn_net_src' || $base eq 'ovpn_net_tgt' || $base eq 'OpenVPN static network'){
317 $$hash{$key}[0]=&fwlib
::get_ovpn_net_ip
($base2,1);
318 }elsif($base eq 'ovpn_host_src' ||$base eq 'ovpn_host_tgt' || $base eq 'OpenVPN static host'){
319 $$hash{$key}[0]=&fwlib
::get_ovpn_host_ip
($base2,33);
320 }elsif($base eq 'ovpn_n2n_src' ||$base eq 'ovpn_n2n_tgt' || $base eq 'OpenVPN N-2-N'){
321 $$hash{$key}[0]=&fwlib
::get_ovpn_n2n_ip
($base2,27);
322 }elsif($base eq 'ipsec_net_src' || $base eq 'ipsec_net_tgt' || $base eq 'IpSec Network'){
323 $$hash{$key}[0]=&fwlib
::get_ipsec_net_ip
($base2,11);
330 if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
331 if ($$hash{$key}[10] ne ''){
332 return"$$hash{$key}[8]";
333 }elsif($$hash{$key}[9] ne ''){
334 return"$$hash{$key}[8]";
336 return "$$hash{$key}[8]";
338 }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
339 if ($$hash{$key}[14] eq 'TGT_PORT'){
340 if ($$hash{$key}[15] ne ''){
341 return "$$hash{$key}[12]";
342 }elsif($$hash{$key}[13] ne ''){
343 return "$$hash{$key}[12]";
345 return "$$hash{$key}[12]";
347 }elsif($$hash{$key}[14] eq 'cust_srv'){
348 return &fwlib
::get_srv_prot
($$hash{$key}[15]);
350 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
351 return &fwlib
::get_srvgrp_prot
($$hash{$key}[15]);
360 if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
361 if ($$hash{$key}[10] ne ''){
362 $$hash{$key}[10] =~ s/\|/,/g;
363 if(index($$hash{$key}[10],",") > 0){
364 return "-m multiport --sport $$hash{$key}[10] ";
366 return "--sport $$hash{$key}[10] ";
368 }elsif($$hash{$key}[9] ne '' && $$hash{$key}[9] ne 'All ICMP-Types'){
369 return "--icmp-type $$hash{$key}[9] ";
370 }elsif($$hash{$key}[9] eq 'All ICMP-Types'){
373 }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
375 if($$hash{$key}[14] eq 'TGT_PORT'){
376 if ($$hash{$key}[15] ne ''){
377 $$hash{$key}[15] =~ s/\|/,/g;
378 if(index($$hash{$key}[15],",") > 0){
379 return "-m multiport --dport $$hash{$key}[15] ";
381 return "--dport $$hash{$key}[15] ";
383 }elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] ne 'All ICMP-Types'){
384 return "--icmp-type $$hash{$key}[13] ";
385 }elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] eq 'All ICMP-Types'){
388 }elsif($$hash{$key}[14] eq 'cust_srv'){
389 if ($prot ne 'ICMP'){
390 return "--dport ".&fwlib
::get_srv_port
($$hash{$key}[15],1,$prot);
391 }elsif($prot eq 'ICMP' && $$hash{$key}[15] ne 'All ICMP-Types'){
392 return "--icmp-type ".&fwlib
::get_srv_port
($$hash{$key}[15],3,$prot);
393 }elsif($prot eq 'ICMP' && $$hash{$key}[15] eq 'All ICMP-Types'){
396 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
397 if ($prot ne 'ICMP'){
398 return &fwlib
::get_srvgrp_port
($$hash{$key}[15],$prot);
400 elsif($prot eq 'ICMP'){
401 return &fwlib
::get_srvgrp_port
($$hash{$key}[15],$prot);