]>
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 ###############################################################################
29 no warnings
'uninitialized';
31 # enable only the following on debugging purpose
33 #use CGI::Carp 'fatalsToBrowser';
36 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 $configgrp = "${General::swroot}/fwhosts/customgroups";
56 my ($TYPE,$PROT,$SPROT,$DPROT,$SPORT,$DPORT,$TIME,$TIMEFROM,$TIMETILL,$SRC_TGT);
57 my $CHAIN="FORWARDFW";
60 &General
::readhash
("${General::swroot}/forward/settings", \
%fwdfwsettings);
61 &General
::readhasharray
($configfwdfw, \
%configfwdfw);
62 &General
::readhasharray
($configinput, \
%configinputfw);
63 &General
::readhasharray
($configgrp, \
%customgrp);
64 &General
::get_aliases
(\
%aliases);
66 ################################
68 ################################
69 my $MODE=0; # 0 - normal operation
70 # 1 - print configline and rules to console
72 ################################
75 if($param eq 'flush'){
77 print " Flushing chains...\n";
82 print " Flushing chains...\n";
86 print " Preparing rules...\n";
90 if ($fwdfwsettings{'POLICY'} eq 'MODE1'){
91 system ("iptables -A $CHAIN -j DROP");
92 }elsif($fwdfwsettings{'POLICY'} eq 'MODE2'){
93 system ("iptables -A $CHAIN -j ACCEPT");
100 system ("iptables -F FORWARDFW");
101 system ("iptables -F INPUTFW");
105 if (! -z
"${General::swroot}/forward/config"){
106 &buildrules
(\
%configfwdfw);
108 if (! -z
"${General::swroot}/forward/input"){
109 &buildrules
(\
%configinputfw);
117 foreach my $key (sort keys %$hash){
118 if($$hash{$key}[2] eq 'ON'){
120 if ($$hash{$key}[3] eq 'cust_grp_src'){
121 foreach my $grp (sort keys %customgrp){
122 if($customgrp{$grp}[0] eq $$hash{$key}[4]){
123 &get_address
($customgrp{$grp}[3],$customgrp{$grp}[2],"src");
127 &get_address
($$hash{$key}[3],$$hash{$key}[4],"src");
130 if ($$hash{$key}[5] eq 'cust_grp_tgt'){
131 foreach my $grp (sort keys %customgrp){
132 if($customgrp{$grp}[0] eq $$hash{$key}[6]){
133 &get_address
($customgrp{$grp}[3],$customgrp{$grp}[2],"tgt");
136 }elsif($$hash{$key}[5] eq 'ipfire'){
138 if($$hash{$key}[6] eq 'Default IP'){
139 open(FILE
, "/var/ipfire/red/local-ipaddress") or die 'Unable to open config file.';
140 $targethash{$key}[0]= <FILE
>;
143 foreach my $alias (sort keys %aliases){
144 if ($$hash{$key}[6] eq $alias){
145 $targethash{$key}[0]=$aliases{$alias}{'IPT'};
150 &get_address
($$hash{$key}[5],$$hash{$key}[6],"tgt");
152 ##get source prot and port
154 $SPROT = &get_prot
($hash,$key);
155 $SPORT = &get_port
($hash,$key);
158 ##get target prot and port
159 $DPROT=&get_prot
($hash,$key);
161 if ($DPROT eq ''){$DPROT=' ';}
162 @DPROT=split(",",$DPROT);
166 if($$hash{$key}[18] eq 'ON'){
167 if($$hash{$key}[19] ne ''){push (@timeframe,"Mon");}
168 if($$hash{$key}[20] ne ''){push (@timeframe,"Tue");}
169 if($$hash{$key}[21] ne ''){push (@timeframe,"Wed");}
170 if($$hash{$key}[22] ne ''){push (@timeframe,"Thu");}
171 if($$hash{$key}[23] ne ''){push (@timeframe,"Fri");}
172 if($$hash{$key}[24] ne ''){push (@timeframe,"Sat");}
173 if($$hash{$key}[25] ne ''){push (@timeframe,"Sun");}
174 $TIME=join(",",@timeframe);
175 $TIMEFROM="--timestart $$hash{$key}[26] ";
176 $TIMETILL="--timestop $$hash{$key}[27] ";
177 $TIME="-m time --weekdays $TIME $TIMEFROM $TIMETILL";
182 foreach my $i (0 .. $#{$$hash{$key}}){
183 print "$i: $$hash{$key}[$i] ";
186 print"##################################\n";
187 #print rules to console
189 foreach my $DPROT (@DPROT){
190 $DPORT = &get_port
($hash,$key,$DPROT);
191 if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;}
192 $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
193 foreach my $a (sort keys %sourcehash){
194 foreach my $b (sort keys %targethash){
195 if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none'){
196 if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){
197 if ($$hash{$key}[17] eq 'ON'){
198 print "iptables -A $$hash{$key}[1] $PROT -s $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
200 print "iptables -A $$hash{$key}[1] $PROT -s $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
208 }elsif($MODE eq '0'){
209 foreach my $DPROT (@DPROT){
210 $DPORT = &get_port
($hash,$key,$DPROT);
211 if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;}
212 $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
213 foreach my $a (sort keys %sourcehash){
214 foreach my $b (sort keys %targethash){
215 if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none'){
216 if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){
217 if ($$hash{$key}[17] eq 'ON'){
218 system ("iptables -A $$hash{$key}[1] $PROT -s $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG");
220 system ("iptables -A $$hash{$key}[1] $PROT -s $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]");
238 my $base=shift; #source of checking ($configfwdfw{$key}[x] or groupkey
240 my $type=shift; #src or tgt
247 my $key = &General
::findhasharraykey
($hash);
248 if($base eq 'src_addr' || $base eq 'tgt_addr' ){
249 $$hash{$key}[0] = $base2;
250 }elsif($base eq 'std_net_src' || $base eq 'std_net_tgt' || $base eq 'Standard Network'){
251 $$hash{$key}[0]=&fwlib
::get_std_net_ip
($base2);
252 }elsif($base eq 'cust_net_src' || $base eq 'cust_net_tgt' || $base eq 'Custom Network'){
253 $$hash{$key}[0]=&fwlib
::get_net_ip
($base2);
254 }elsif($base eq 'cust_host_src' || $base eq 'cust_host_tgt' || $base eq 'Custom Host'){
255 $$hash{$key}[0]=&fwlib
::get_host_ip
($base2,$type);
256 }elsif($base eq 'ovpn_net_src' || $base eq 'ovpn_net_tgt' || $base eq 'OpenVPN static network'){
257 $$hash{$key}[0]=&fwlib
::get_ovpn_net_ip
($base2,1);
258 }elsif($base eq 'ovpn_host_src' ||$base eq 'ovpn_host_tgt' || $base eq 'OpenVPN static host'){
259 $$hash{$key}[0]=&fwlib
::get_ovpn_host_ip
($base2,33);
260 }elsif($base eq 'ovpn_n2n_src' ||$base eq 'ovpn_n2n_tgt' || $base eq 'OpenVPN N-2-N'){
261 $$hash{$key}[0]=&fwlib
::get_ovpn_n2n_ip
($base2,27);
262 }elsif($base eq 'ipsec_net_src' || $base eq 'ipsec_net_tgt' || $base eq 'IpSec Network'){
263 $$hash{$key}[0]=&fwlib
::get_ipsec_net_ip
($base2,11);
270 if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
271 if ($$hash{$key}[10] ne ''){
272 return"$$hash{$key}[8]";
273 }elsif($$hash{$key}[9] ne ''){
274 return"$$hash{$key}[8]";
276 return "$$hash{$key}[8]";
278 }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
279 if ($$hash{$key}[14] eq 'TGT_PORT'){
280 if ($$hash{$key}[15] ne ''){
281 return "$$hash{$key}[12]";
282 }elsif($$hash{$key}[13] ne ''){
283 return "$$hash{$key}[12]";
285 return "$$hash{$key}[12]";
287 }elsif($$hash{$key}[14] eq 'cust_srv'){
288 return &fwlib
::get_srv_prot
($$hash{$key}[15]);
290 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
291 return &fwlib
::get_srvgrp_prot
($$hash{$key}[15]);
300 if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
301 if ($$hash{$key}[10] ne ''){
302 return "--sport $$hash{$key}[10] ";
303 }elsif($$hash{$key}[9] ne ''){
304 return "--icmp-type $$hash{$key}[9] ";
306 }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
308 if($$hash{$key}[14] eq 'TGT_PORT'){
309 if ($$hash{$key}[15] ne ''){
310 return "--dport $$hash{$key}[15] ";
311 }elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] ne 'All ICMP-Types'){
312 return "--icmp-type $$hash{$key}[13] ";
313 }elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] eq 'All ICMP-Types'){
316 }elsif($$hash{$key}[14] eq 'cust_srv'){
317 if ($prot ne 'ICMP'){
318 return "--dport ".&fwlib
::get_srv_port
($$hash{$key}[15],1,$prot);
319 }elsif($prot eq 'ICMP' && $$hash{$key}[15] ne 'All ICMP-Types'){
320 return "--icmp-type ".&fwlib
::get_srv_port
($$hash{$key}[15],3,$prot);
321 }elsif($prot eq 'ICMP' && $$hash{$key}[15] eq 'All ICMP-Types'){
324 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
325 if ($prot ne 'ICMP'){
326 return &fwlib
::get_srvgrp_port
($$hash{$key}[15],$prot);
328 elsif($prot eq 'ICMP'){
329 return &fwlib
::get_srvgrp_port
($$hash{$key}[15],$prot);