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2a81ab0d AM |
1 | #!/usr/bin/perl |
2 | ############################################################################### | |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5 | # Copyright (C) 2012 # | |
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 | # # | |
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 | ############################################################################### | |
26 | ||
2a81ab0d AM |
27 | use strict; |
28 | no warnings 'uninitialized'; | |
29 | ||
30 | # enable only the following on debugging purpose | |
31 | #use warnings; | |
32 | #use CGI::Carp 'fatalsToBrowser'; | |
33 | ||
34 | my %fwdfwsettings=(); | |
35 | my %defaultNetworks=(); | |
36 | my %configfwdfw=(); | |
37 | my %color=(); | |
38 | my %icmptypes=(); | |
39 | my %ovpnSettings=(); | |
40 | my %customgrp=(); | |
41 | our %sourcehash=(); | |
42 | our %targethash=(); | |
43 | my @timeframe=(); | |
44 | my %configinputfw=(); | |
45 | my %aliases=(); | |
46 | my @DPROT=(); | |
36196d0d | 47 | my @p2ps=(); |
2a81ab0d AM |
48 | require '/var/ipfire/general-functions.pl'; |
49 | require "${General::swroot}/lang.pl"; | |
50 | require "${General::swroot}/forward/bin/firewall-lib.pl"; | |
51 | ||
52 | my $configfwdfw = "${General::swroot}/forward/config"; | |
53 | my $configinput = "${General::swroot}/forward/input"; | |
36196d0d | 54 | my $p2pfile = "${General::swroot}/forward/p2protocols"; |
2a81ab0d AM |
55 | my $configgrp = "${General::swroot}/fwhosts/customgroups"; |
56 | my $errormessage=''; | |
57 | my ($TYPE,$PROT,$SPROT,$DPROT,$SPORT,$DPORT,$TIME,$TIMEFROM,$TIMETILL,$SRC_TGT); | |
58 | my $CHAIN="FORWARDFW"; | |
59 | ||
60 | ||
61 | &General::readhash("${General::swroot}/forward/settings", \%fwdfwsettings); | |
62 | &General::readhasharray($configfwdfw, \%configfwdfw); | |
63 | &General::readhasharray($configinput, \%configinputfw); | |
64 | &General::readhasharray($configgrp, \%customgrp); | |
65 | &General::get_aliases(\%aliases); | |
66 | ||
67 | ################################ | |
68 | # DEBUG/TEST # | |
69 | ################################ | |
54cb7ff0 | 70 | my $MODE=1; # 0 - normal operation |
2a81ab0d AM |
71 | # 1 - print configline and rules to console |
72 | # | |
73 | ################################ | |
74 | my $param=shift; | |
75 | ||
76 | if($param eq 'flush'){ | |
77 | if ($MODE eq '1'){ | |
78 | print " Flushing chains...\n"; | |
79 | } | |
80 | &flush; | |
81 | }else{ | |
82 | if ($MODE eq '1'){ | |
83 | print " Flushing chains...\n"; | |
84 | } | |
85 | &flush; | |
86 | if ($MODE eq '1'){ | |
87 | print " Preparing rules...\n"; | |
88 | } | |
89 | &preparerules; | |
90 | if($MODE eq '0'){ | |
91 | if ($fwdfwsettings{'POLICY'} eq 'MODE1'){ | |
62fc8511 | 92 | system ("/usr/sbin/firewall-forward-policy"); |
2a81ab0d | 93 | }elsif($fwdfwsettings{'POLICY'} eq 'MODE2'){ |
62fc8511 | 94 | system ("/usr/sbin/firewall-forward-policy"); |
fd10a52c | 95 | }elsif($fwdfwsettings{'POLICY'} eq 'MODE0' || $fwdfwsettings{'POLICY'} eq 'MODE2'){ |
62fc8511 | 96 | system ("/usr/sbin/firewall-forward-policy"); |
fd10a52c | 97 | system ("iptables -A $CHAIN -m state --state NEW -j ACCEPT"); |
2a81ab0d AM |
98 | } |
99 | } | |
100 | } | |
2a81ab0d AM |
101 | sub flush |
102 | { | |
103 | system ("iptables -F FORWARDFW"); | |
104 | system ("iptables -F INPUTFW"); | |
105 | } | |
106 | sub preparerules | |
107 | { | |
108 | if (! -z "${General::swroot}/forward/config"){ | |
109 | &buildrules(\%configfwdfw); | |
36196d0d | 110 | &p2pblock; |
2a81ab0d AM |
111 | } |
112 | if (! -z "${General::swroot}/forward/input"){ | |
113 | &buildrules(\%configinputfw); | |
114 | } | |
115 | } | |
116 | sub buildrules | |
117 | { | |
118 | my $hash=shift; | |
b5269091 | 119 | my $STAG; |
992394d5 | 120 | foreach my $key (sort {$a <=> $b} keys %$hash){ |
b5269091 | 121 | $STAG=''; |
2a81ab0d AM |
122 | if($$hash{$key}[2] eq 'ON'){ |
123 | #get source ip's | |
124 | if ($$hash{$key}[3] eq 'cust_grp_src'){ | |
992394d5 | 125 | foreach my $grp (sort {$a <=> $b} keys %customgrp){ |
2a81ab0d AM |
126 | if($customgrp{$grp}[0] eq $$hash{$key}[4]){ |
127 | &get_address($customgrp{$grp}[3],$customgrp{$grp}[2],"src"); | |
128 | } | |
129 | } | |
130 | }else{ | |
131 | &get_address($$hash{$key}[3],$$hash{$key}[4],"src"); | |
132 | } | |
133 | #get target ip's | |
134 | if ($$hash{$key}[5] eq 'cust_grp_tgt'){ | |
992394d5 | 135 | foreach my $grp (sort {$a <=> $b} keys %customgrp){ |
2a81ab0d AM |
136 | if($customgrp{$grp}[0] eq $$hash{$key}[6]){ |
137 | &get_address($customgrp{$grp}[3],$customgrp{$grp}[2],"tgt"); | |
138 | } | |
139 | } | |
140 | }elsif($$hash{$key}[5] eq 'ipfire'){ | |
14f7cb87 | 141 | |
2a81ab0d AM |
142 | if($$hash{$key}[6] eq 'Default IP'){ |
143 | open(FILE, "/var/ipfire/red/local-ipaddress") or die 'Unable to open config file.'; | |
144 | $targethash{$key}[0]= <FILE>; | |
145 | close(FILE); | |
146 | }else{ | |
147 | foreach my $alias (sort keys %aliases){ | |
148 | if ($$hash{$key}[6] eq $alias){ | |
149 | $targethash{$key}[0]=$aliases{$alias}{'IPT'}; | |
150 | } | |
151 | } | |
152 | } | |
153 | }else{ | |
154 | &get_address($$hash{$key}[5],$$hash{$key}[6],"tgt"); | |
155 | } | |
2a81ab0d AM |
156 | ##get source prot and port |
157 | $SRC_TGT='SRC'; | |
158 | $SPROT = &get_prot($hash,$key); | |
159 | $SPORT = &get_port($hash,$key); | |
160 | $SRC_TGT=''; | |
14f7cb87 | 161 | |
2a81ab0d AM |
162 | ##get target prot and port |
163 | $DPROT=&get_prot($hash,$key); | |
14f7cb87 | 164 | |
2a81ab0d AM |
165 | if ($DPROT eq ''){$DPROT=' ';} |
166 | @DPROT=split(",",$DPROT); | |
14f7cb87 | 167 | |
2a81ab0d AM |
168 | #get time if defined |
169 | if($$hash{$key}[18] eq 'ON'){ | |
170 | if($$hash{$key}[19] ne ''){push (@timeframe,"Mon");} | |
171 | if($$hash{$key}[20] ne ''){push (@timeframe,"Tue");} | |
172 | if($$hash{$key}[21] ne ''){push (@timeframe,"Wed");} | |
173 | if($$hash{$key}[22] ne ''){push (@timeframe,"Thu");} | |
174 | if($$hash{$key}[23] ne ''){push (@timeframe,"Fri");} | |
175 | if($$hash{$key}[24] ne ''){push (@timeframe,"Sat");} | |
176 | if($$hash{$key}[25] ne ''){push (@timeframe,"Sun");} | |
177 | $TIME=join(",",@timeframe); | |
178 | $TIMEFROM="--timestart $$hash{$key}[26] "; | |
179 | $TIMETILL="--timestop $$hash{$key}[27] "; | |
180 | $TIME="-m time --weekdays $TIME $TIMEFROM $TIMETILL"; | |
181 | } | |
2a81ab0d AM |
182 | if ($MODE eq '1'){ |
183 | print "NR:$key "; | |
184 | foreach my $i (0 .. $#{$$hash{$key}}){ | |
185 | print "$i: $$hash{$key}[$i] "; | |
186 | } | |
187 | print "\n"; | |
188 | print"##################################\n"; | |
189 | #print rules to console | |
2a81ab0d AM |
190 | foreach my $DPROT (@DPROT){ |
191 | $DPORT = &get_port($hash,$key,$DPROT); | |
192 | if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;} | |
193 | $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' '); | |
194 | foreach my $a (sort keys %sourcehash){ | |
195 | foreach my $b (sort keys %targethash){ | |
196 | if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none'){ | |
197 | if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){ | |
54cb7ff0 | 198 | if(substr($sourcehash{$a}[0], 3, 3) ne 'mac'){ $STAG="-s";} |
2a81ab0d | 199 | if ($$hash{$key}[17] eq 'ON'){ |
b5269091 | 200 | print "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n"; |
2a81ab0d | 201 | } |
b5269091 | 202 | print "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n"; |
2a81ab0d AM |
203 | } |
204 | } | |
205 | } | |
206 | } | |
207 | print"\n"; | |
208 | } | |
2a81ab0d AM |
209 | }elsif($MODE eq '0'){ |
210 | foreach my $DPROT (@DPROT){ | |
211 | $DPORT = &get_port($hash,$key,$DPROT); | |
212 | if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;} | |
213 | $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' '); | |
214 | foreach my $a (sort keys %sourcehash){ | |
215 | foreach my $b (sort keys %targethash){ | |
216 | if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none'){ | |
217 | if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){ | |
54cb7ff0 | 218 | if(substr($sourcehash{$a}[0], 3, 3) ne 'mac'){ $STAG="-s";} |
2a81ab0d | 219 | if ($$hash{$key}[17] eq 'ON'){ |
b5269091 | 220 | system ("iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG"); |
2a81ab0d | 221 | } |
b5269091 | 222 | system ("iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]"); |
2a81ab0d AM |
223 | } |
224 | } | |
225 | } | |
226 | } | |
227 | print"\n"; | |
228 | } | |
229 | } | |
230 | } | |
231 | %sourcehash=(); | |
232 | %targethash=(); | |
233 | undef $TIME; | |
234 | undef $TIMEFROM; | |
235 | undef $TIMETILL; | |
236 | } | |
237 | } | |
36196d0d AM |
238 | sub p2pblock |
239 | { | |
240 | my $P2PSTRING; | |
241 | my $DO; | |
242 | open( FILE, "< $p2pfile" ) or die "Unable to read $p2pfile"; | |
243 | @p2ps = <FILE>; | |
244 | close FILE; | |
245 | my $CMD = "-m ipp2p"; | |
246 | foreach my $p2pentry (sort @p2ps) { | |
247 | my @p2pline = split( /\;/, $p2pentry ); | |
248 | if ( $fwdfwsettings{'POLICY'} eq 'MODE2' ) { | |
249 | $DO = "DROP"; | |
250 | if ("$p2pline[2]" eq "off") { | |
251 | $P2PSTRING = "$P2PSTRING --$p2pline[1]"; | |
252 | } | |
253 | } else { | |
254 | $DO = "RETURN"; | |
255 | if ("$p2pline[2]" eq "on") { | |
256 | $P2PSTRING = "$P2PSTRING --$p2pline[1]"; | |
257 | } | |
258 | } | |
259 | } | |
260 | if ($MODE eq 1){ | |
261 | if($P2PSTRING){ | |
262 | print"/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO\n"; | |
263 | } | |
264 | }else{ | |
265 | if($P2PSTRING){ | |
266 | system("/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO"); | |
267 | } | |
268 | } | |
269 | } | |
270 | ||
2a81ab0d AM |
271 | sub get_address |
272 | { | |
273 | my $base=shift; #source of checking ($configfwdfw{$key}[x] or groupkey | |
274 | my $base2=shift; | |
275 | my $type=shift; #src or tgt | |
276 | my $hash; | |
277 | if ($type eq 'src'){ | |
278 | $hash=\%sourcehash; | |
279 | }else{ | |
280 | $hash=\%targethash; | |
281 | } | |
282 | my $key = &General::findhasharraykey($hash); | |
283 | if($base eq 'src_addr' || $base eq 'tgt_addr' ){ | |
b5269091 AM |
284 | if (&General::validmac($base2)){ |
285 | $$hash{$key}[0] = "-m mac --mac-source $base2"; | |
286 | }else{ | |
287 | $$hash{$key}[0] = $base2; | |
288 | } | |
2a81ab0d AM |
289 | }elsif($base eq 'std_net_src' || $base eq 'std_net_tgt' || $base eq 'Standard Network'){ |
290 | $$hash{$key}[0]=&fwlib::get_std_net_ip($base2); | |
291 | }elsif($base eq 'cust_net_src' || $base eq 'cust_net_tgt' || $base eq 'Custom Network'){ | |
292 | $$hash{$key}[0]=&fwlib::get_net_ip($base2); | |
293 | }elsif($base eq 'cust_host_src' || $base eq 'cust_host_tgt' || $base eq 'Custom Host'){ | |
294 | $$hash{$key}[0]=&fwlib::get_host_ip($base2,$type); | |
295 | }elsif($base eq 'ovpn_net_src' || $base eq 'ovpn_net_tgt' || $base eq 'OpenVPN static network'){ | |
296 | $$hash{$key}[0]=&fwlib::get_ovpn_net_ip($base2,1); | |
297 | }elsif($base eq 'ovpn_host_src' ||$base eq 'ovpn_host_tgt' || $base eq 'OpenVPN static host'){ | |
298 | $$hash{$key}[0]=&fwlib::get_ovpn_host_ip($base2,33); | |
299 | }elsif($base eq 'ovpn_n2n_src' ||$base eq 'ovpn_n2n_tgt' || $base eq 'OpenVPN N-2-N'){ | |
300 | $$hash{$key}[0]=&fwlib::get_ovpn_n2n_ip($base2,27); | |
301 | }elsif($base eq 'ipsec_net_src' || $base eq 'ipsec_net_tgt' || $base eq 'IpSec Network'){ | |
302 | $$hash{$key}[0]=&fwlib::get_ipsec_net_ip($base2,11); | |
303 | } | |
304 | } | |
305 | sub get_prot | |
306 | { | |
307 | my $hash=shift; | |
308 | my $key=shift; | |
309 | if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){ | |
310 | if ($$hash{$key}[10] ne ''){ | |
311 | return"$$hash{$key}[8]"; | |
312 | }elsif($$hash{$key}[9] ne ''){ | |
313 | return"$$hash{$key}[8]"; | |
314 | }else{ | |
315 | return "$$hash{$key}[8]"; | |
316 | } | |
317 | }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){ | |
318 | if ($$hash{$key}[14] eq 'TGT_PORT'){ | |
319 | if ($$hash{$key}[15] ne ''){ | |
320 | return "$$hash{$key}[12]"; | |
321 | }elsif($$hash{$key}[13] ne ''){ | |
322 | return "$$hash{$key}[12]"; | |
323 | }else{ | |
324 | return "$$hash{$key}[12]"; | |
325 | } | |
326 | }elsif($$hash{$key}[14] eq 'cust_srv'){ | |
327 | return &fwlib::get_srv_prot($$hash{$key}[15]); | |
328 | ||
329 | }elsif($$hash{$key}[14] eq 'cust_srvgrp'){ | |
330 | return &fwlib::get_srvgrp_prot($$hash{$key}[15]); | |
331 | } | |
332 | } | |
333 | } | |
334 | sub get_port | |
335 | { | |
336 | my $hash=shift; | |
337 | my $key=shift; | |
338 | my $prot=shift; | |
339 | if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){ | |
340 | if ($$hash{$key}[10] ne ''){ | |
341 | return "--sport $$hash{$key}[10] "; | |
62fc8511 | 342 | }elsif($$hash{$key}[9] ne '' && $$hash{$key}[9] ne 'All ICMP-Types'){ |
2a81ab0d | 343 | return "--icmp-type $$hash{$key}[9] "; |
62fc8511 AM |
344 | }elsif($$hash{$key}[9] eq 'All ICMP-Types'){ |
345 | return; | |
2a81ab0d AM |
346 | } |
347 | }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){ | |
b5269091 | 348 | |
2a81ab0d AM |
349 | if($$hash{$key}[14] eq 'TGT_PORT'){ |
350 | if ($$hash{$key}[15] ne ''){ | |
351 | return "--dport $$hash{$key}[15] "; | |
352 | }elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] ne 'All ICMP-Types'){ | |
353 | return "--icmp-type $$hash{$key}[13] "; | |
354 | }elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] eq 'All ICMP-Types'){ | |
355 | return; | |
356 | } | |
357 | }elsif($$hash{$key}[14] eq 'cust_srv'){ | |
358 | if ($prot ne 'ICMP'){ | |
359 | return "--dport ".&fwlib::get_srv_port($$hash{$key}[15],1,$prot); | |
360 | }elsif($prot eq 'ICMP' && $$hash{$key}[15] ne 'All ICMP-Types'){ | |
361 | return "--icmp-type ".&fwlib::get_srv_port($$hash{$key}[15],3,$prot); | |
362 | }elsif($prot eq 'ICMP' && $$hash{$key}[15] eq 'All ICMP-Types'){ | |
363 | return; | |
364 | } | |
365 | }elsif($$hash{$key}[14] eq 'cust_srvgrp'){ | |
366 | if ($prot ne 'ICMP'){ | |
367 | return &fwlib::get_srvgrp_port($$hash{$key}[15],$prot); | |
368 | } | |
369 | elsif($prot eq 'ICMP'){ | |
370 | return &fwlib::get_srvgrp_port($$hash{$key}[15],$prot); | |
371 | } | |
2a81ab0d AM |
372 | } |
373 | } | |
374 | } |