]>
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{'ORANGE_DEV'}){
103 $defaultNetworks{'ORANGE_NETMASK'}=&General
::iporsubtocidr
($defaultNetworks{'ORANGE_NETMASK'});
104 $orange="$defaultNetworks{'ORANGE_ADDRESS'}/$defaultNetworks{'ORANGE_NETMASK'}";
105 #set default rules for DMZ
106 system ("iptables -A $CHAIN -s $orange -d $green -j RETURN");
108 if ($defaultNetworks{'BLUE_DEV'}){
109 $defaultNetworks{'BLUE_NETMASK'}=&General
::iporsubtocidr
($defaultNetworks{'BLUE_NETMASK'});
110 $blue="$defaultNetworks{'BLUE_ADDRESS'}/$defaultNetworks{'BLUE_NETMASK'}";
111 #set default rules for BLUE
112 system ("iptables -A $CHAIN -s $blue -d $green -j RETURN");
115 system ("iptables -A $CHAIN -m state --state NEW -j ACCEPT");
116 system ("/usr/sbin/firewall-forward-policy");
122 system ("iptables -F FORWARDFW");
123 system ("iptables -F INPUTFW");
127 if (! -z
"${General::swroot}/forward/config"){
128 &buildrules
(\
%configfwdfw);
130 if (! -z
"${General::swroot}/forward/input"){
131 &buildrules
(\
%configinputfw);
138 foreach my $key (sort {$a <=> $b} keys %$hash){
140 if($$hash{$key}[2] eq 'ON'){
142 if ($$hash{$key}[3] eq 'cust_grp_src'){
143 foreach my $grp (sort {$a <=> $b} keys %customgrp){
144 if($customgrp{$grp}[0] eq $$hash{$key}[4]){
145 &get_address
($customgrp{$grp}[3],$customgrp{$grp}[2],"src");
149 &get_address
($$hash{$key}[3],$$hash{$key}[4],"src");
152 if ($$hash{$key}[5] eq 'cust_grp_tgt'){
153 foreach my $grp (sort {$a <=> $b} keys %customgrp){
154 if($customgrp{$grp}[0] eq $$hash{$key}[6]){
155 &get_address
($customgrp{$grp}[3],$customgrp{$grp}[2],"tgt");
158 }elsif($$hash{$key}[5] eq 'ipfire'){
160 if($$hash{$key}[6] eq 'Default IP'){
161 open(FILE
, "/var/ipfire/red/local-ipaddress") or die 'Unable to open config file.';
162 $targethash{$key}[0]= <FILE
>;
165 foreach my $alias (sort keys %aliases){
166 if ($$hash{$key}[6] eq $alias){
167 $targethash{$key}[0]=$aliases{$alias}{'IPT'};
172 &get_address
($$hash{$key}[5],$$hash{$key}[6],"tgt");
174 ##get source prot and port
176 $SPROT = &get_prot
($hash,$key);
177 $SPORT = &get_port
($hash,$key);
180 ##get target prot and port
181 $DPROT=&get_prot
($hash,$key);
183 if ($DPROT eq ''){$DPROT=' ';}
184 @DPROT=split(",",$DPROT);
187 if($$hash{$key}[18] eq 'ON'){
188 if($$hash{$key}[19] ne ''){push (@timeframe,"Mon");}
189 if($$hash{$key}[20] ne ''){push (@timeframe,"Tue");}
190 if($$hash{$key}[21] ne ''){push (@timeframe,"Wed");}
191 if($$hash{$key}[22] ne ''){push (@timeframe,"Thu");}
192 if($$hash{$key}[23] ne ''){push (@timeframe,"Fri");}
193 if($$hash{$key}[24] ne ''){push (@timeframe,"Sat");}
194 if($$hash{$key}[25] ne ''){push (@timeframe,"Sun");}
195 $TIME=join(",",@timeframe);
196 $TIMEFROM="--timestart $$hash{$key}[26] ";
197 $TIMETILL="--timestop $$hash{$key}[27] ";
198 $TIME="-m time --weekdays $TIME $TIMEFROM $TIMETILL";
202 foreach my $i (0 .. $#{$$hash{$key}}){
203 print "$i: $$hash{$key}[$i] ";
206 print"##################################\n";
207 #print rules to console
208 foreach my $DPROT (@DPROT){
209 $DPORT = &get_port
($hash,$key,$DPROT);
210 if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;}
211 $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
212 foreach my $a (sort keys %sourcehash){
213 foreach my $b (sort keys %targethash){
214 if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' || $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
215 if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){
216 if(substr($sourcehash{$a}[0], 3, 3) ne 'mac'){ $STAG="-s";}
217 if ($$hash{$key}[17] eq 'ON'){
218 print "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
220 print "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
227 }elsif($MODE eq '0'){
228 foreach my $DPROT (@DPROT){
229 $DPORT = &get_port
($hash,$key,$DPROT);
230 if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;}
231 $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
232 foreach my $a (sort keys %sourcehash){
233 foreach my $b (sort keys %targethash){
234 if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' || $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
235 if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){
236 if(substr($sourcehash{$a}[0], 3, 3) ne 'mac'){ $STAG="-s";}
237 if ($$hash{$key}[17] eq 'ON'){
238 system ("iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG");
240 system ("iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]");
259 open( FILE
, "< $p2pfile" ) or die "Unable to read $p2pfile";
262 my $CMD = "-m ipp2p";
263 foreach my $p2pentry (sort @p2ps) {
264 my @p2pline = split( /\;/, $p2pentry );
265 if ( $fwdfwsettings{'POLICY'} eq 'MODE1' ) {
267 if ("$p2pline[2]" eq "on") {
268 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
272 if ("$p2pline[2]" eq "off") {
273 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
279 print"/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO\n";
283 system("/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO");
290 my $base=shift; #source of checking ($configfwdfw{$key}[x] or groupkey
292 my $type=shift; #src or tgt
299 my $key = &General
::findhasharraykey
($hash);
300 if($base eq 'src_addr' || $base eq 'tgt_addr' ){
301 if (&General
::validmac
($base2)){
302 $$hash{$key}[0] = "-m mac --mac-source $base2";
304 $$hash{$key}[0] = $base2;
306 }elsif($base eq 'std_net_src' || $base eq 'std_net_tgt' || $base eq 'Standard Network'){
307 $$hash{$key}[0]=&fwlib
::get_std_net_ip
($base2);
308 }elsif($base eq 'cust_net_src' || $base eq 'cust_net_tgt' || $base eq 'Custom Network'){
309 $$hash{$key}[0]=&fwlib
::get_net_ip
($base2);
310 }elsif($base eq 'cust_host_src' || $base eq 'cust_host_tgt' || $base eq 'Custom Host'){
311 $$hash{$key}[0]=&fwlib
::get_host_ip
($base2,$type);
312 }elsif($base eq 'ovpn_net_src' || $base eq 'ovpn_net_tgt' || $base eq 'OpenVPN static network'){
313 $$hash{$key}[0]=&fwlib
::get_ovpn_net_ip
($base2,1);
314 }elsif($base eq 'ovpn_host_src' ||$base eq 'ovpn_host_tgt' || $base eq 'OpenVPN static host'){
315 $$hash{$key}[0]=&fwlib
::get_ovpn_host_ip
($base2,33);
316 }elsif($base eq 'ovpn_n2n_src' ||$base eq 'ovpn_n2n_tgt' || $base eq 'OpenVPN N-2-N'){
317 $$hash{$key}[0]=&fwlib
::get_ovpn_n2n_ip
($base2,27);
318 }elsif($base eq 'ipsec_net_src' || $base eq 'ipsec_net_tgt' || $base eq 'IpSec Network'){
319 $$hash{$key}[0]=&fwlib
::get_ipsec_net_ip
($base2,11);
326 if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
327 if ($$hash{$key}[10] ne ''){
328 return"$$hash{$key}[8]";
329 }elsif($$hash{$key}[9] ne ''){
330 return"$$hash{$key}[8]";
332 return "$$hash{$key}[8]";
334 }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
335 if ($$hash{$key}[14] eq 'TGT_PORT'){
336 if ($$hash{$key}[15] ne ''){
337 return "$$hash{$key}[12]";
338 }elsif($$hash{$key}[13] ne ''){
339 return "$$hash{$key}[12]";
341 return "$$hash{$key}[12]";
343 }elsif($$hash{$key}[14] eq 'cust_srv'){
344 return &fwlib
::get_srv_prot
($$hash{$key}[15]);
346 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
347 return &fwlib
::get_srvgrp_prot
($$hash{$key}[15]);
356 if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
357 if ($$hash{$key}[10] ne ''){
358 $$hash{$key}[10] =~ s/\|/,/g;
359 if(index($$hash{$key}[10],",") > 0){
360 return "-m multiport --sport $$hash{$key}[10] ";
362 return "--sport $$hash{$key}[10] ";
364 }elsif($$hash{$key}[9] ne '' && $$hash{$key}[9] ne 'All ICMP-Types'){
365 return "--icmp-type $$hash{$key}[9] ";
366 }elsif($$hash{$key}[9] eq 'All ICMP-Types'){
369 }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
371 if($$hash{$key}[14] eq 'TGT_PORT'){
372 if ($$hash{$key}[15] ne ''){
373 $$hash{$key}[15] =~ s/\|/,/g;
374 if(index($$hash{$key}[15],",") > 0){
375 return "-m multiport --dport $$hash{$key}[15] ";
377 return "--dport $$hash{$key}[15] ";
379 }elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] ne 'All ICMP-Types'){
380 return "--icmp-type $$hash{$key}[13] ";
381 }elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] eq 'All ICMP-Types'){
384 }elsif($$hash{$key}[14] eq 'cust_srv'){
385 if ($prot ne 'ICMP'){
386 return "--dport ".&fwlib
::get_srv_port
($$hash{$key}[15],1,$prot);
387 }elsif($prot eq 'ICMP' && $$hash{$key}[15] ne 'All ICMP-Types'){
388 return "--icmp-type ".&fwlib
::get_srv_port
($$hash{$key}[15],3,$prot);
389 }elsif($prot eq 'ICMP' && $$hash{$key}[15] eq 'All ICMP-Types'){
392 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
393 if ($prot ne 'ICMP'){
394 return &fwlib
::get_srvgrp_port
($$hash{$key}[15],$prot);
396 elsif($prot eq 'ICMP'){
397 return &fwlib
::get_srvgrp_port
($$hash{$key}[15],$prot);