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1 | #!/usr/bin/perl | |
2 | ############################################################################### | |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5 | # Copyright (C) 2007-2011 IPFire Team # | |
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 | ||
23 | use strict; | |
24 | # enable only the following on debugging purpose | |
25 | #use warnings; | |
26 | ||
27 | require '/var/ipfire/general-functions.pl'; | |
28 | require "${General::swroot}/lang.pl"; | |
29 | ||
30 | my %outfwsettings = (); | |
31 | my %checked = (); | |
32 | my %selected= () ; | |
33 | my %netsettings = (); | |
34 | my $errormessage = ""; | |
35 | my $configentry = ""; | |
36 | my @configs = (); | |
37 | my @configline = (); | |
38 | my $p2pentry = ""; | |
39 | my @p2ps = (); | |
40 | my @p2pline = (); | |
41 | my $CMD = ""; | |
42 | my $P2PSTRING = ""; | |
43 | ||
44 | my $DEBUG = 0; | |
45 | ||
46 | my $configfile = "/var/ipfire/outgoing/rules"; | |
47 | my $p2pfile = "/var/ipfire/outgoing/p2protocols"; | |
48 | ||
49 | ### Values that have to be initialized | |
50 | $outfwsettings{'ACTION'} = ''; | |
51 | $outfwsettings{'VALID'} = 'yes'; | |
52 | $outfwsettings{'EDIT'} = 'no'; | |
53 | $outfwsettings{'NAME'} = ''; | |
54 | $outfwsettings{'SNET'} = ''; | |
55 | $outfwsettings{'SIP'} = ''; | |
56 | $outfwsettings{'SPORT'} = ''; | |
57 | $outfwsettings{'SMAC'} = ''; | |
58 | $outfwsettings{'DIP'} = ''; | |
59 | $outfwsettings{'DPORT'} = ''; | |
60 | $outfwsettings{'PROT'} = ''; | |
61 | $outfwsettings{'STATE'} = ''; | |
62 | $outfwsettings{'DISPLAY_DIP'} = ''; | |
63 | $outfwsettings{'DISPLAY_DPORT'} = ''; | |
64 | $outfwsettings{'DISPLAY_SMAC'} = ''; | |
65 | $outfwsettings{'DISPLAY_SIP'} = ''; | |
66 | $outfwsettings{'POLICY'} = 'MODE0'; | |
67 | ||
68 | my @SOURCE = ""; | |
69 | my $SOURCE = ""; | |
70 | my $DESTINATION = ""; | |
71 | my @PROTO = ""; | |
72 | my $PROTO = ""; | |
73 | my $DPORT = ""; | |
74 | my $DEV = ""; | |
75 | my $MAC = ""; | |
76 | my $DO = ""; | |
77 | my $DAY = ""; | |
78 | ||
79 | # read files | |
80 | &General::readhash("${General::swroot}/outgoing/settings", \%outfwsettings); | |
81 | &General::readhash("${General::swroot}/ethernet/settings", \%netsettings); | |
82 | ||
83 | $netsettings{'RED_DEV'}=`cat /var/ipfire/red/iface`; | |
84 | $netsettings{'RED_IP'}=`cat /var/ipfire/red/local-ipaddress`; | |
85 | ||
86 | open( FILE, "< $configfile" ) or die "Unable to read $configfile"; | |
87 | @configs = <FILE>; | |
88 | close FILE; | |
89 | ||
90 | if ( $outfwsettings{'POLICY'} eq 'MODE1' ) { | |
91 | $outfwsettings{'STATE'} = "ALLOW"; | |
92 | $DO = "RETURN"; | |
93 | } elsif ( $outfwsettings{'POLICY'} eq 'MODE2' ) { | |
94 | $outfwsettings{'STATE'} = "DENY"; | |
95 | $DO = "DROP -m comment --comment 'DROP_OUTGOINGFW '"; | |
96 | } | |
97 | ||
98 | ### Initialize IPTables | |
99 | system("/sbin/iptables --flush OUTGOINGFW >/dev/null 2>&1"); | |
100 | system("/sbin/iptables --delete-chain OUTGOINGFW >/dev/null 2>&1"); | |
101 | system("/sbin/iptables -N OUTGOINGFW >/dev/null 2>&1"); | |
102 | ||
103 | system("/sbin/iptables --flush OUTGOINGFWMAC >/dev/null 2>&1"); | |
104 | system("/sbin/iptables --delete-chain OUTGOINGFWMAC >/dev/null 2>&1"); | |
105 | system("/sbin/iptables -N OUTGOINGFWMAC >/dev/null 2>&1"); | |
106 | ||
107 | if ( $outfwsettings{'POLICY'} eq 'MODE0' ) { | |
108 | exit 0 | |
109 | } | |
110 | ||
111 | if ( $outfwsettings{'POLICY'} eq 'MODE1' ) { | |
112 | $CMD = "/sbin/iptables -A OUTGOINGFW -m state --state ESTABLISHED,RELATED -j RETURN"; | |
113 | if ($DEBUG) { print "$CMD\n"; } else { system("$CMD"); } | |
114 | $CMD = "/sbin/iptables -A OUTGOINGFWMAC -m state --state ESTABLISHED,RELATED -j RETURN"; | |
115 | if ($DEBUG) { print "$CMD\n"; } else { system("$CMD"); } | |
116 | $CMD = "/sbin/iptables -A OUTGOINGFW -p icmp -j RETURN"; | |
117 | if ($DEBUG) { print "$CMD\n"; } else { system("$CMD"); } | |
118 | $CMD = "/sbin/iptables -A OUTGOINGFWMAC -p icmp -j RETURN"; | |
119 | if ($DEBUG) { print "$CMD\n"; } else { system("$CMD"); } | |
120 | } | |
121 | ||
122 | foreach $configentry (sort @configs) | |
123 | { | |
124 | @SOURCE = ""; | |
125 | $DESTINATION = ""; | |
126 | $PROTO = ""; | |
127 | $DPORT = ""; | |
128 | $DEV = ""; | |
129 | $MAC = ""; | |
130 | @configline = split( /\;/, $configentry ); | |
131 | ||
132 | if ($outfwsettings{'STATE'} eq $configline[0]) { | |
133 | if ($configline[2] eq 'green') { | |
134 | @SOURCE = ("$netsettings{'GREEN_NETADDRESS'}/$netsettings{'GREEN_NETMASK'}"); | |
135 | $DEV = $netsettings{'GREEN_DEV'}; | |
136 | } elsif ($configline[2] eq 'red') { | |
137 | @SOURCE = ("$netsettings{'RED_IP'}"); | |
138 | $DEV = ""; | |
139 | } elsif ($configline[2] eq 'blue') { | |
140 | @SOURCE = ("$netsettings{'BLUE_NETADDRESS'}/$netsettings{'BLUE_NETMASK'}"); | |
141 | $DEV = $netsettings{'BLUE_DEV'}; | |
142 | } elsif ($configline[2] eq 'orange') { | |
143 | @SOURCE = ("$netsettings{'ORANGE_NETADDRESS'}/$netsettings{'ORANGE_NETMASK'}"); | |
144 | $DEV = $netsettings{'ORANGE_DEV'}; | |
145 | } elsif ($configline[2] eq 'ipsec') { | |
146 | @SOURCE = ""; | |
147 | $DEV = "ipsec+"; | |
148 | } elsif ($configline[2] eq 'ovpn') { | |
149 | @SOURCE = ""; | |
150 | $DEV = "tun+"; | |
151 | } elsif ($configline[2] eq 'ip') { | |
152 | @SOURCE = ("$configline[5]"); | |
153 | $DEV = ""; | |
154 | } elsif ($configline[2] eq 'mac') { | |
155 | @SOURCE = ("$configline[6]"); | |
156 | $DEV = ""; | |
157 | } elsif ($configline[2] eq 'all') { | |
158 | @SOURCE = ("0/0"); | |
159 | $DEV = ""; | |
160 | } else { | |
161 | if ( -e "/var/ipfire/outgoing/groups/ipgroups/$configline[2]" ) { | |
162 | @SOURCE = `cat /var/ipfire/outgoing/groups/ipgroups/$configline[2]`; | |
163 | } elsif ( -e "/var/ipfire/outgoing/groups/macgroups/$configline[2]" ) { | |
164 | @SOURCE = `cat /var/ipfire/outgoing/groups/macgroups/$configline[2]`; | |
165 | $configline[2] = "mac"; | |
166 | } | |
167 | $DEV = ""; | |
168 | } | |
169 | ||
170 | if ($configline[7]) { $DESTINATION = "$configline[7]"; } else { $DESTINATION = "0/0"; } | |
171 | ||
172 | if ($configline[3] eq 'tcp') { | |
173 | @PROTO = ("tcp"); | |
174 | } elsif ($configline[3] eq 'udp') { | |
175 | @PROTO = ("udp"); | |
176 | } elsif ($configline[3] eq 'esp') { | |
177 | @PROTO = ("esp"); | |
178 | } elsif ($configline[3] eq 'gre') { | |
179 | @PROTO = ("gre"); | |
180 | } else { | |
181 | @PROTO = ("tcp","udp"); | |
182 | } | |
183 | ||
184 | my $macrule = 0; | |
185 | foreach $PROTO (@PROTO){ | |
186 | foreach $SOURCE (@SOURCE) { | |
187 | $SOURCE =~ s/\s//gi; | |
188 | ||
189 | if ( $SOURCE eq "" || $configline[1] eq "" ){next;} | |
190 | ||
191 | if ( ( $configline[6] ne "" || $configline[2] eq 'mac' ) && $configline[2] ne 'all'){ | |
192 | $SOURCE =~ s/[^a-zA-Z0-9]/:/gi; | |
193 | $CMD = "-m mac --mac-source $SOURCE -d $DESTINATION -p $PROTO"; | |
194 | $macrule = 1; | |
195 | } else { | |
196 | $CMD = "-s $SOURCE -d $DESTINATION -p $PROTO"; | |
197 | } | |
198 | ||
199 | if ($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 $DEV"; | |
206 | } | |
207 | ||
208 | if ($configline[17] && $configline[18]) { | |
209 | $DAY = ""; | |
210 | if ($configline[10]){$DAY = "Mon,"} | |
211 | if ($configline[11]){$DAY .= "Tue,"} | |
212 | if ($configline[12]){$DAY .= "Wed,"} | |
213 | if ($configline[13]){$DAY .= "Thu,"} | |
214 | if ($configline[14]){$DAY .= "Fri,"} | |
215 | if ($configline[15]){$DAY .= "Sat,"} | |
216 | if ($configline[16]){$DAY .= "Sun"} | |
217 | $CMD = "$CMD -m time --timestart $configline[17] --timestop $configline[18] --weekdays $DAY"; | |
218 | } | |
219 | ||
220 | $CMD = "$CMD -o $netsettings{'RED_DEV'}"; | |
221 | ||
222 | if ( $configline[9] eq $Lang::tr{'aktiv'} && $outfwsettings{'POLICY'} eq 'MODE1' ) { | |
223 | applyrule("$CMD -m limit --limit 10/minute -j LOG --log-prefix 'LOG_OUTGOINGFW '", $macrule); | |
224 | } elsif ( $configline[9] eq $Lang::tr{'aktiv'} && $outfwsettings{'POLICY'} eq 'MODE2' ) { | |
225 | applyrule("$CMD -m limit --limit 10/minute -j LOG --log-prefix 'DROP_OUTGOINGFW '", $macrule); | |
226 | } | |
227 | ||
228 | applyrule("$CMD -j $DO", $macrule); | |
229 | } | |
230 | } | |
231 | } | |
232 | } | |
233 | ||
234 | ### Do the P2P-Stuff here | |
235 | open( FILE, "< $p2pfile" ) or die "Unable to read $p2pfile"; | |
236 | @p2ps = <FILE>; | |
237 | close FILE; | |
238 | ||
239 | $CMD = "-m ipp2p"; | |
240 | ||
241 | foreach $p2pentry (sort @p2ps) { | |
242 | @p2pline = split( /\;/, $p2pentry ); | |
243 | if ( $outfwsettings{'POLICY'} eq 'MODE2' ) { | |
244 | $DO = "DROP"; | |
245 | if ("$p2pline[2]" eq "off") { | |
246 | $P2PSTRING = "$P2PSTRING --$p2pline[1]"; | |
247 | } | |
248 | } else { | |
249 | $DO = "RETURN"; | |
250 | if ("$p2pline[2]" eq "on") { | |
251 | $P2PSTRING = "$P2PSTRING --$p2pline[1]"; | |
252 | } | |
253 | } | |
254 | } | |
255 | if ($P2PSTRING) { | |
256 | applyrule("$CMD $P2PSTRING -j $DO", 0); | |
257 | } | |
258 | ||
259 | if ( $outfwsettings{'POLICY'} eq 'MODE1' ) { | |
260 | if ( $outfwsettings{'MODE1LOG'} eq 'on' ) { | |
261 | applyrule("-o $netsettings{'RED_DEV'} -m limit --limit 10/minute -j LOG --log-prefix 'DROP_OUTGOINGFW '", 0); | |
262 | } | |
263 | ||
264 | applyrule("-o $netsettings{'RED_DEV'} -j DROP -m comment --comment 'DROP_OUTGOINGFW '", 0); | |
265 | } | |
266 | ||
267 | sub applyrule($$) { | |
268 | my $cmd = shift; | |
269 | my $macrule = shift; | |
270 | ||
271 | system("/sbin/iptables -A OUTGOINGFWMAC $cmd"); | |
272 | if ($macrule == 0) { | |
273 | system("/sbin/iptables -A OUTGOINGFW $cmd"); | |
274 | } | |
275 | } |