config/firewall/rules.pl

   1 #!/usr/bin/perl
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2013 Alexander Marx <amarx@ipfire.org>                        #
   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 use strict;
  23 use Time::Local;
  24 no warnings 'uninitialized';
  25
  26 # enable only the following on debugging purpose
  27 #use warnings;
  28 #use CGI::Carp 'fatalsToBrowser';
  29
  30 my %fwdfwsettings=();
  31 my %defaultNetworks=();
  32 my %configfwdfw=();
  33 my %color=();
  34 my %icmptypes=();
  35 my %ovpnSettings=();
  36 my %customgrp=();
  37 our %sourcehash=();
  38 our %targethash=();
  39 my @timeframe=();
  40 my %configinputfw=();
  41 my %configoutgoingfw=();
  42 my %confignatfw=();
  43 my %aliases=();
  44 my @DPROT=();
  45 my @p2ps=();
  46 require '/var/ipfire/general-functions.pl';
  47 require "${General::swroot}/lang.pl";
  48 require "/usr/lib/firewall/firewall-lib.pl";
  49
  50 my $configfwdfw         = "${General::swroot}/firewall/config";
  51 my $configinput     = "${General::swroot}/firewall/input";
  52 my $configoutgoing  = "${General::swroot}/firewall/outgoing";
  53 my $p2pfile                     = "${General::swroot}/firewall/p2protocols";
  54 my $configgrp           = "${General::swroot}/fwhosts/customgroups";
  55 my $netsettings         = "${General::swroot}/ethernet/settings";
  56 my $errormessage        = '';
  57 my $orange                      = '';
  58 my $green                       = '';
  59 my $blue                        = '';
  60 my ($TYPE,$PROT,$SPROT,$DPROT,$SPORT,$DPORT,$TIME,$TIMEFROM,$TIMETILL,$SRC_TGT);
  61 my $CHAIN                       = "FORWARDFW";
  62 my $conexists           = 'off';
  63 my $command                     = 'iptables -A';
  64 my $dnat                        ='';
  65 my $snat                        ='';
  66
  67 &General::readhash("${General::swroot}/firewall/settings", \%fwdfwsettings);
  68 &General::readhash("$netsettings", \%defaultNetworks);
  69 &General::readhasharray($configfwdfw, \%configfwdfw);
  70 &General::readhasharray($configinput, \%configinputfw);
  71 &General::readhasharray($configoutgoing, \%configoutgoingfw);
  72 &General::readhasharray($configgrp, \%customgrp);
  73 &General::get_aliases(\%aliases);
  74
  75 #check if we have an internetconnection
  76 open (CONN,"/var/ipfire/red/iface");
  77 my $con = <CONN>;
  78 close(CONN);
  79 if (-f "/var/ipfire/red/active"){
  80         $conexists='on';
  81 }
  82 open (CONN1,"/var/ipfire/red/local-ipaddress");
  83 my $redip = <CONN1>;
  84 close(CONN1);
  85 #################
  86 #    DEBUG/TEST #
  87 #################
  88 my $MODE=0;     # 0 - normal operation
  89                 # 1 - print configline and rules to console
  90                 #
  91 #################
  92 my $param=shift;
  93
  94 if($param eq 'flush'){
  95         if ($MODE eq '1'){
  96                 print " Flushing chains...\n";
  97         }
  98         &flush;
  99 }else{
 100         if ($MODE eq '1'){
 101                 print " Flushing chains...\n";
 102         }
 103         &flush;
 104         if ($MODE eq '1'){
 105                 print " Preparing rules...\n";
 106         }
 107         &preparerules;
 108         if($MODE eq '0'){
 109                 if ($fwdfwsettings{'POLICY'} eq 'MODE1'){
 110                         &p2pblock;
 111                         system ("/usr/sbin/firewall-policy");
 112                 }elsif($fwdfwsettings{'POLICY'} eq 'MODE2'){
 113                         &p2pblock;
 114                         system ("iptables -A $CHAIN -m conntrack --ctstate NEW -j ACCEPT");
 115                         system ("/usr/sbin/firewall-policy");
 116                         system ("/etc/sysconfig/firewall.local reload");
 117                 }
 118         }
 119 }
 120 sub flush
 121 {
 122         system ("iptables -F FORWARDFW");
 123         system ("iptables -F INPUTFW");
 124         system ("iptables -F OUTGOINGFW");
 125         system ("iptables -t nat -F NAT_DESTINATION");
 126         system ("iptables -t nat -F NAT_SOURCE");
 127 }
 128 sub preparerules
 129 {
 130         if (! -z  "${General::swroot}/firewall/config"){
 131                 &buildrules(\%configfwdfw);
 132         }
 133         if (! -z  "${General::swroot}/firewall/input"){
 134                 &buildrules(\%configinputfw);
 135         }
 136         if (! -z  "${General::swroot}/firewall/outgoing"){
 137                 &buildrules(\%configoutgoingfw);
 138         }
 139 }
 140 sub buildrules
 141 {
 142         my $hash=shift;
 143         my $STAG;
 144         my $natip;
 145         my $snatport;
 146         my $fireport;
 147         my $nat;
 148         my $fwaccessdport;
 149         my $natchain;
 150         my $icmptype;
 151         foreach my $key (sort {$a <=> $b} keys %$hash){
 152                 next if (($$hash{$key}[6] eq 'RED' || $$hash{$key}[6] eq 'RED1') && $conexists eq 'off' );
 153                 $command="iptables -A";
 154                 if ($$hash{$key}[28] eq 'ON'){
 155                         $command='iptables -t nat -A';
 156                         $natip=&get_nat_ip($$hash{$key}[29],$$hash{$key}[31]);
 157                         if($$hash{$key}[31] eq 'dnat'){
 158                                 $nat='DNAT';
 159                                 if ($$hash{$key}[30] =~ /\|/){
 160                                         $$hash{$key}[30]=~ tr/|/,/;
 161                                         $fireport='-m multiport --dport '.$$hash{$key}[30];
 162                                 }else{
 163                                         $fireport='--dport '.$$hash{$key}[30] if ($$hash{$key}[30]>0);
 164                                 }
 165                         }else{
 166                                 $nat='SNAT';
 167                         }
 168                 }
 169                 $STAG='';
 170                 if($$hash{$key}[2] eq 'ON'){
 171                         #get source ip's
 172                         if ($$hash{$key}[3] eq 'cust_grp_src'){
 173                                 foreach my $grp (sort {$a <=> $b} keys %customgrp){
 174                                                 if($customgrp{$grp}[0] eq $$hash{$key}[4]){
 175                                                 &get_address($customgrp{$grp}[3],$customgrp{$grp}[2],"src");
 176                                         }
 177                                 }
 178                         }else{
 179                                 &get_address($$hash{$key}[3],$$hash{$key}[4],"src");
 180                         }
 181                         #get target ip's
 182                         if ($$hash{$key}[5] eq 'cust_grp_tgt'){
 183                                 foreach my $grp (sort {$a <=> $b} keys %customgrp){
 184                                         if($customgrp{$grp}[0] eq $$hash{$key}[6]){
 185                                                 &get_address($customgrp{$grp}[3],$customgrp{$grp}[2],"tgt");
 186                                         }
 187                                 }
 188                         }elsif($$hash{$key}[5] eq 'ipfire' ){
 189                                 if($$hash{$key}[6] eq 'GREEN'){
 190                                         $targethash{$key}[0]=$defaultNetworks{'GREEN_ADDRESS'};
 191                                 }
 192                                 if($$hash{$key}[6] eq 'BLUE'){
 193                                         $targethash{$key}[0]=$defaultNetworks{'BLUE_ADDRESS'};
 194                                 }
 195                                 if($$hash{$key}[6] eq 'ORANGE'){
 196                                         $targethash{$key}[0]=$defaultNetworks{'ORANGE_ADDRESS'};
 197                                 }
 198                                 if($$hash{$key}[6] eq 'ALL'){
 199                                         $targethash{$key}[0]='0.0.0.0/0';
 200                                 }
 201                                 if($$hash{$key}[6] eq 'RED' || $$hash{$key}[6] eq 'RED1'){
 202                                         open(FILE, "/var/ipfire/red/local-ipaddress")or die "Couldn't open local-ipaddress";
 203                                         $targethash{$key}[0]= <FILE>;
 204                                         close(FILE);
 205                                 }else{
 206                                         foreach my $alias (sort keys %aliases){
 207                                                 if ($$hash{$key}[6] eq $alias){
 208                                                         $targethash{$key}[0]=$aliases{$alias}{'IPT'};
 209                                                 }
 210                                         }
 211                                 }
 212                         }else{
 213                                 &get_address($$hash{$key}[5],$$hash{$key}[6],"tgt");
 214                         }
 215                         ##get source prot and port
 216                         $SRC_TGT='SRC';
 217                         $SPORT = &get_port($hash,$key);
 218                         $SRC_TGT='';
 219
 220                         ##get target prot and port
 221                         $DPROT=&get_prot($hash,$key);
 222
 223                         if ($DPROT eq ''){$DPROT=' ';}
 224                         @DPROT=split(",",$DPROT);
 225
 226                         #get time if defined
 227                         if($$hash{$key}[18] eq 'ON'){
 228                                 my ($time1,$time2,$daylight);
 229                                 my $daylight=$$hash{$key}[28];
 230                                 $time1=&get_time($$hash{$key}[26],$daylight);
 231                                 $time2=&get_time($$hash{$key}[27],$daylight);
 232                                 if($$hash{$key}[19] ne ''){push (@timeframe,"Mon");}
 233                                 if($$hash{$key}[20] ne ''){push (@timeframe,"Tue");}
 234                                 if($$hash{$key}[21] ne ''){push (@timeframe,"Wed");}
 235                                 if($$hash{$key}[22] ne ''){push (@timeframe,"Thu");}
 236                                 if($$hash{$key}[23] ne ''){push (@timeframe,"Fri");}
 237                                 if($$hash{$key}[24] ne ''){push (@timeframe,"Sat");}
 238                                 if($$hash{$key}[25] ne ''){push (@timeframe,"Sun");}
 239                                 $TIME=join(",",@timeframe);
 240
 241                                 $TIMEFROM="--timestart $time1 ";
 242                                 $TIMETILL="--timestop $time2 ";
 243                                 $TIME="-m time --weekdays $TIME $TIMEFROM $TIMETILL";
 244                         }
 245                         if ($MODE eq '1'){
 246                                 print "NR:$key ";
 247                                 foreach my $i (0 .. $#{$$hash{$key}}){
 248                                         print "$i: $$hash{$key}[$i]  ";
 249                                 }
 250                                 print "\n";
 251                                 print"##################################\n";
 252                                 #print rules to console
 253                                 foreach my $DPROT (@DPROT){
 254                                         $DPORT = &get_port($hash,$key,$DPROT);
 255                                         if ($DPROT ne 'TCP' && $DPROT ne 'UDP' && $DPROT ne 'ICMP' ){
 256                                                 $DPORT='';
 257                                         }
 258                                         $PROT=$DPROT;
 259                                         $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
 260                                         foreach my $a (sort keys %sourcehash){
 261                                                 foreach my $b (sort keys %targethash){
 262                                                         next if ($targethash{$b}[0] eq 'none');
 263                                                         $STAG='';
 264                                                         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'){
 265                                                                 if($DPROT ne ''){
 266                                                                         if(substr($sourcehash{$a}[0], 3, 3) ne 'mac' && $sourcehash{$a}[0] ne ''){ $STAG="-s";}
 267                                                                         #Process ICMP RULE
 268                                                                         if(substr($DPORT, 2, 4) eq 'icmp'){
 269                                                                                 my @icmprule= split(",",substr($DPORT, 12,));
 270                                                                                 foreach (@icmprule){
 271                                                                                         $icmptype="--icmp-type ";
 272                                                                                         if ($_ eq "BLANK") {
 273                                                                                                         $icmptype="";
 274                                                                                                         $_="";
 275                                                                                         }
 276                                                                                         if ($$hash{$key}[17] eq 'ON'){
 277                                                                                                 print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $icmptype $_ $TIME -j LOG\n";
 278                                                                                         }
 279                                                                                                 print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $icmptype $_ $TIME -j $$hash{$key}[0]\n";
 280                                                                                 }
 281                                                                         #PROCESS DNAT RULE (Portforward)
 282                                                                         }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat'){
 283                                                                                 $natchain='NAT_DESTINATION';
 284                                                                                 if ($$hash{$key}[17] eq 'ON'){
 285                                                                                         print "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j LOG --log-prefix 'DNAT' \n";
 286                                                                                 }
 287                                                                                 my ($ip,$sub) =split("/",$targethash{$b}[0]);
 288                                                                                 #Process NAT with servicegroup used
 289                                                                                 if ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat' && $$hash{$key}[14] eq 'cust_srvgrp'){
 290                                                                                         print "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $nat --to $ip $DPORT\n";
 291                                                                                         $fwaccessdport=$DPORT;
 292                                                                                 }else{
 293                                                                                         print "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $nat --to $ip$DPORT\n";
 294                                                                                         $DPORT =~ s/\-/:/g;
 295                                                                                         if ($DPORT){
 296                                                                                                 $fwaccessdport="--dport ".substr($DPORT,1,);
 297                                                                                         }elsif(! $DPORT && $$hash{$key}[30] ne ''){
 298                                                                                                 if ($$hash{$key}[30]=~m/|/i){
 299                                                                                                         $$hash{$key}[30] =~ s/\|/,/g;
 300                                                                                                         $fwaccessdport="-m multiport --dport $$hash{$key}[30]";
 301                                                                                                 }else{
 302                                                                                                         $fwaccessdport="--dport $$hash{$key}[30]";
 303                                                                                                 }
 304                                                                                         }
 305                                                                                 }
 306                                                                                 print "iptables -A FORWARDFW $PROT -i $con $STAG $sourcehash{$a}[0] -d $ip $fwaccessdport $TIME -j $$hash{$key}[0]\n";
 307                                                                                 next;
 308                                                                         #PROCESS SNAT RULE
 309                                                                         }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat'){
 310                                                                                 $natchain='NAT_SOURCE';
 311                                                                                 if ($$hash{$key}[17] eq 'ON' ){
 312                                                                                         print "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG --log-prefix 'SNAT' \n";
 313                                                                                 }
 314                                                                                 print "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $nat --to $natip\n";
 315                                                                         }
 316                                                                         #PROCESS EVERY OTHER RULE (If NOT ICMP, else the rule would be applied double)
 317                                                                         if ($PROT ne '-p ICMP'){
 318                                                                                 if ($$hash{$key}[17] eq 'ON' && $$hash{$key}[28] ne 'ON'){
 319                                                                                         print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
 320                                                                                 }
 321                                                                                 print "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
 322                                                                         }
 323                                                                         #PROCESS Prot ICMP and type = All ICMP-Types
 324                                                                         if ($PROT eq '-p ICMP' && $$hash{$key}[9] eq 'All ICMP-Types'){
 325                                                                                 if ($$hash{$key}[17] eq 'ON' && $$hash{$key}[28] ne 'ON'){
 326                                                                                         print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
 327                                                                                 }
 328                                                                                 print "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
 329                                                                         }
 330                                                                 }
 331                                                         }
 332                                                 }
 333                                         }
 334                                         print"\n";
 335                                 }
 336                         }elsif($MODE eq '0'){
 337                                 foreach my $DPROT (@DPROT){
 338                                         $DPORT = &get_port($hash,$key,$DPROT);
 339                                         $PROT=$DPROT;
 340                                         $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
 341                                         if ($DPROT ne 'TCP' && $DPROT ne'UDP' && $DPROT ne 'ICMP' ){
 342                                                 $DPORT='';
 343                                         }
 344                                         foreach my $a (sort keys %sourcehash){
 345                                                 foreach my $b (sort keys %targethash){
 346                                                         next if ($targethash{$b}[0] eq 'none');
 347                                                         $STAG='';
 348                                                         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'){
 349                                                                 if($DPROT ne ''){
 350                                                                         if(substr($sourcehash{$a}[0], 3, 3) ne 'mac' && $sourcehash{$a}[0] ne ''){ $STAG="-s";}
 351                                                                         #Process ICMP RULE
 352                                                                         if(substr($DPORT, 2, 4) eq 'icmp'){
 353                                                                                 my @icmprule= split(",",substr($DPORT, 12,));
 354                                                                                 foreach (@icmprule){
 355                                                                                         $icmptype="--icmp-type ";
 356                                                                                         if ($_ eq "BLANK") {
 357                                                                                                         $icmptype="";
 358                                                                                                         $_="";
 359                                                                                         }
 360                                                                                         if ($$hash{$key}[17] eq 'ON'){
 361                                                                                                 system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $icmptype $_ $TIME -j LOG");
 362                                                                                         }
 363                                                                                                 system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $icmptype $_ $TIME -j $$hash{$key}[0]");
 364                                                                                 }
 365                                                                         #PROCESS DNAT RULE (Portforward)
 366                                                                         }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat'){
 367                                                                                 $natchain='NAT_DESTINATION';
 368                                                                                 if ($$hash{$key}[17] eq 'ON'){
 369                                                                                         system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j LOG --log-prefix 'DNAT' \n";
 370                                                                                 }
 371                                                                                 my ($ip,$sub) =split("/",$targethash{$b}[0]);
 372                                                                                 #Process NAT with servicegroup used
 373                                                                                 if ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat' && $$hash{$key}[14] eq 'cust_srvgrp'){
 374                                                                                         system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $nat --to $ip $DPORT\n";
 375                                                                                         $fwaccessdport=$DPORT;
 376                                                                                 }else{
 377                                                                                         system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $nat --to $ip$DPORT\n";
 378                                                                                         $DPORT =~ s/\-/:/g;
 379                                                                                         if ($DPORT){
 380                                                                                                 $fwaccessdport="--dport ".substr($DPORT,1,);
 381                                                                                         }elsif(! $DPORT && $$hash{$key}[30] ne ''){
 382                                                                                                 if ($$hash{$key}[30]=~m/|/i){
 383                                                                                                         $$hash{$key}[30] =~ s/\|/,/g;
 384                                                                                                         $fwaccessdport="-m multiport --dport $$hash{$key}[30]";
 385                                                                                                 }else{
 386                                                                                                         $fwaccessdport="--dport $$hash{$key}[30]";
 387                                                                                                 }
 388                                                                                         }
 389                                                                                 }
 390                                                                                 system "iptables -A FORWARDFW $PROT -i $con $STAG $sourcehash{$a}[0] -d $ip $fwaccessdport $TIME -j $$hash{$key}[0]\n";
 391                                                                                 next;
 392                                                                         #PROCESS SNAT RULE
 393                                                                         }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat'){
 394                                                                                 $natchain='NAT_SOURCE';
 395                                                                                 if ($$hash{$key}[17] eq 'ON' ){
 396                                                                                         system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG --log-prefix 'SNAT' \n";
 397                                                                                 }
 398                                                                                 system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $nat --to $natip\n";
 399                                                                         }
 400                                                                         #PROCESS EVERY OTHER RULE (If NOT ICMP, else the rule would be applied double)
 401                                                                         if ($PROT ne '-p ICMP'){
 402                                                                                 if ($$hash{$key}[17] eq 'ON' && $$hash{$key}[28] ne 'ON'){
 403                                                                                         system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
 404                                                                                 }
 405                                                                                 system "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
 406                                                                         }
 407                                                                         #PROCESS Prot ICMP and type = All ICMP-Types
 408                                                                         if ($PROT eq '-p ICMP' && $$hash{$key}[9] eq 'All ICMP-Types'){
 409                                                                                 if ($$hash{$key}[17] eq 'ON' && $$hash{$key}[28] ne 'ON'){
 410                                                                                         system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
 411                                                                                 }
 412                                                                                 system "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
 413                                                                         }
 414                                                                 }
 415                                                         }
 416                                                 }
 417                                         }
 418                                 }
 419                         }
 420                 }
 421                 %sourcehash=();
 422                 %targethash=();
 423                 undef $TIME;
 424                 undef $TIMEFROM;
 425                 undef $TIMETILL;
 426                 undef $fireport;
 427         }
 428 }
 429 sub get_nat_ip
 430 {
 431         my $val=shift;
 432         my $type=shift;
 433         my $result;
 434         if($val eq 'RED' || $val eq 'GREEN' || $val eq 'ORANGE' || $val eq 'BLUE'){
 435                 $result=$defaultNetworks{$val.'_ADDRESS'};
 436         }elsif($val eq 'ALL'){
 437                 $result='-i '.$con;
 438         }elsif($val eq 'Default IP' && $type eq 'dnat'){
 439                 $result='-d '.$redip;
 440         }elsif($val eq 'Default IP' && $type eq 'snat'){
 441                 $result=$redip;
 442         }else{
 443                 foreach my $al (sort keys %aliases){
 444                         if($val eq $al && $type eq 'dnat'){
 445                                 $result='-d '.$aliases{$al}{'IPT'};
 446                         }elsif($val eq $al && $type eq 'snat'){
 447                                 $result=$aliases{$al}{'IPT'};
 448                         }
 449                 }
 450         }
 451         return $result;
 452 }
 453 sub get_time
 454 {
 455         my $val=shift;
 456         my $val1=shift;
 457         my $time;
 458         my $minutes;
 459         my $ruletime;
 460         $minutes = &utcmin($val);
 461         $ruletime = $minutes + &time_get_utc($val);
 462         if ($ruletime < 0){$ruletime +=1440;}
 463         if ($ruletime > 1440){$ruletime -=1440;}
 464         $time=sprintf "%02d:%02d", $ruletime / 60, $ruletime % 60;
 465         return $time;
 466 }
 467 sub time_get_utc
 468 {
 469         # Calculates the UTCtime from a given time
 470         my $val=shift;
 471         my @localtime=localtime(time);
 472         my @gmtime=gmtime(time);
 473         my $diff = ($gmtime[2]*60+$gmtime[1]%60)-($localtime[2]*60+$localtime[1]%60);
 474         return $diff;
 475 }
 476 sub utcmin
 477 {
 478         my $ruletime=shift;
 479         my ($hrs,$min) = split(":",$ruletime);
 480         my $newtime = $hrs*60+$min;
 481         return $newtime;
 482 }
 483 sub p2pblock
 484 {
 485         my $P2PSTRING;
 486         my $DO;
 487         open( FILE, "< $p2pfile" ) or die "Unable to read $p2pfile";
 488         @p2ps = <FILE>;
 489         close FILE;
 490         my $CMD = "-m ipp2p";
 491         foreach my $p2pentry (sort @p2ps) {
 492                 my @p2pline = split( /\;/, $p2pentry );
 493                 if ( $fwdfwsettings{'POLICY'} eq 'MODE1' ) {
 494                         $DO = "ACCEPT";
 495                         if ("$p2pline[2]" eq "on") {
 496                                 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
 497                         }
 498                 }else {
 499                         $DO = "RETURN";
 500                         if ("$p2pline[2]" eq "off") {
 501                                 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
 502                         }
 503                 }
 504         }
 505         if ($MODE eq 1){
 506                 if($P2PSTRING){
 507                         print"/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO\n";
 508                 }
 509         }else{
 510                 if($P2PSTRING){
 511                         system("/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO");
 512                 }
 513         }
 514 }
 515 sub get_address
 516 {
 517         my $base=shift; #source of checking ($configfwdfw{$key}[x] or groupkey
 518         my $base2=shift;
 519         my $type=shift; #src or tgt
 520         my $hash;
 521         if ($type eq 'src'){
 522                 $hash=\%sourcehash;
 523         }else{
 524                 $hash=\%targethash;
 525         }
 526         my $key = &General::findhasharraykey($hash);
 527         if($base eq 'src_addr' || $base eq 'tgt_addr' ){
 528                 if (&General::validmac($base2)){
 529                         $$hash{$key}[0] = "-m mac --mac-source $base2";
 530                 }else{
 531                         $$hash{$key}[0] = $base2;
 532                 }
 533         }elsif($base eq 'std_net_src' || $base eq 'std_net_tgt' || $base eq 'Standard Network'){
 534                 $$hash{$key}[0]=&fwlib::get_std_net_ip($base2,$con);
 535         }elsif($base eq 'cust_net_src' || $base eq 'cust_net_tgt' || $base eq 'Custom Network'){
 536                 $$hash{$key}[0]=&fwlib::get_net_ip($base2);
 537         }elsif($base eq 'cust_host_src' || $base eq 'cust_host_tgt' || $base eq 'Custom Host'){
 538                 $$hash{$key}[0]=&fwlib::get_host_ip($base2,$type);
 539         }elsif($base eq 'ovpn_net_src' || $base eq 'ovpn_net_tgt' || $base eq 'OpenVPN static network'){
 540                 $$hash{$key}[0]=&fwlib::get_ovpn_net_ip($base2,1);
 541         }elsif($base eq 'ovpn_host_src' ||$base eq 'ovpn_host_tgt' || $base eq 'OpenVPN static host'){
 542                 $$hash{$key}[0]=&fwlib::get_ovpn_host_ip($base2,33);
 543         }elsif($base eq 'ovpn_n2n_src' ||$base eq 'ovpn_n2n_tgt' || $base eq 'OpenVPN N-2-N'){
 544                 $$hash{$key}[0]=&fwlib::get_ovpn_n2n_ip($base2,11);
 545         }elsif($base eq 'ipsec_net_src' || $base eq 'ipsec_net_tgt' || $base eq 'IpSec Network'){
 546                 $$hash{$key}[0]=&fwlib::get_ipsec_net_ip($base2,11);
 547         }elsif($base eq 'ipfire_src' ){
 548                 if($base2 eq 'GREEN'){
 549                         $$hash{$key}[0]=$defaultNetworks{'GREEN_ADDRESS'};
 550                 }
 551                 if($base2 eq 'BLUE'){
 552                         $$hash{$key}[0]=$defaultNetworks{'BLUE_ADDRESS'};
 553                 }
 554                 if($base2 eq 'ORANGE'){
 555                         $$hash{$key}[0]=$defaultNetworks{'ORANGE_ADDRESS'};
 556                 }
 557                 if($base2 eq 'ALL'){
 558                         $$hash{$key}[0]='0.0.0.0/0';
 559                 }
 560                 if($base2 eq 'RED' || $base2 eq 'RED1'){
 561                         open(FILE, "/var/ipfire/red/local-ipaddress")or die "Couldn't open local-ipaddress";
 562                         $$hash{$key}[0]= <FILE>;
 563                         close(FILE);
 564                 }else{
 565                         foreach my $alias (sort keys %aliases){
 566                                 if ($base2 eq $alias){
 567                                         $$hash{$key}[0]=$aliases{$alias}{'IPT'};
 568                                 }
 569                         }
 570                 }
 571         }
 572 }
 573 sub get_prot
 574 {
 575         my $hash=shift;
 576         my $key=shift;
 577         #check AH,GRE,ESP or ICMP
 578         if ($$hash{$key}[7] ne 'ON' && $$hash{$key}[11] ne 'ON'){
 579                 return "$$hash{$key}[8]";
 580         }
 581         if ($$hash{$key}[7] eq 'ON' || $$hash{$key}[11] eq 'ON'){
 582                 #check if servicegroup or service
 583                 if($$hash{$key}[14] eq 'cust_srv'){
 584                         return &fwlib::get_srv_prot($$hash{$key}[15]);
 585                 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
 586                         return &fwlib::get_srvgrp_prot($$hash{$key}[15]);
 587                 }elsif (($$hash{$key}[10] ne '' || $$hash{$key}[15] ne '') && $$hash{$key}[8] eq ''){ #when ports are used and prot set to "all"
 588                         return "TCP,UDP";
 589                 }elsif (($$hash{$key}[10] ne '' || $$hash{$key}[15] ne '') && ($$hash{$key}[8] eq 'TCP' || $$hash{$key}[8] eq 'UDP')){ #when ports are used and prot set to "tcp" or "udp"
 590                         return "$$hash{$key}[8]";
 591                 }elsif (($$hash{$key}[10] eq '' && $$hash{$key}[15] eq '') && $$hash{$key}[8] ne 'ICMP'){ #when ports are NOT used and prot NOT set to "ICMP"
 592                         return "$$hash{$key}[8]";
 593                 }else{
 594                         return "$$hash{$key}[8]";
 595                 }
 596         }
 597         #DNAT
 598         if ($SRC_TGT eq '' && $$hash{$key}[31] eq 'dnat' && $$hash{$key}[11] eq '' && $$hash{$key}[12] ne ''){
 599                 return "$$hash{$key}[8]";
 600         }
 601 }
 602 sub get_port
 603 {
 604         my $hash=shift;
 605         my $key=shift;
 606         my $prot=shift;
 607         #Get manual defined Ports from SOURCE
 608         if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
 609                 if ($$hash{$key}[10] ne ''){
 610                         $$hash{$key}[10] =~ s/\|/,/g;
 611                         if(index($$hash{$key}[10],",") > 0){
 612                                 return "-m multiport --sport $$hash{$key}[10] ";
 613                         }else{
 614                                 if($$hash{$key}[28] ne 'ON' || ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat') ||($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat')  ){
 615                                         return "--sport $$hash{$key}[10] ";
 616                                 }else{
 617                                         return ":$$hash{$key}[10]";
 618                                 }
 619                         }
 620                 }
 621                 #Get manual ports from TARGET
 622         }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
 623                 if($$hash{$key}[14] eq 'TGT_PORT'){
 624                         if ($$hash{$key}[15] ne ''){
 625                                 $$hash{$key}[15] =~ s/\|/,/g;
 626                                 if(index($$hash{$key}[15],",") > 0){
 627                                         return "-m multiport --dport $$hash{$key}[15] ";
 628                                 }else{
 629                                         if($$hash{$key}[28] ne 'ON' || ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat') ){
 630                                                 return "--dport $$hash{$key}[15] ";
 631                                          }else{
 632                                                  $$hash{$key}[15] =~ s/\:/-/g;
 633                                                  return ":$$hash{$key}[15]";
 634                                          }
 635                                 }
 636                         }
 637                 #Get ports defined in custom Service (firewall-groups)
 638                 }elsif($$hash{$key}[14] eq 'cust_srv'){
 639                         if ($prot ne 'ICMP'){
 640                                 if($$hash{$key}[31] eq 'dnat' && $$hash{$key}[28] eq 'ON'){
 641                                         my $ports =&fwlib::get_srv_port($$hash{$key}[15],1,$prot);
 642                                         $ports =~ s/\:/-/g;
 643                                         return ":".$ports
 644                                 }else{
 645                                         return "--dport ".&fwlib::get_srv_port($$hash{$key}[15],1,$prot);
 646                                 }
 647                         }elsif($prot eq 'ICMP' && $$hash{$key}[11] eq 'ON'){        #When PROT is ICMP and "use targetport is checked, this is an icmp-service
 648                                 return "--icmp-type ".&fwlib::get_srv_port($$hash{$key}[15],3,$prot);
 649                         }
 650                 #Get ports from services which are used in custom servicegroups (firewall-groups)
 651                 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
 652                         if      ($prot ne 'ICMP'){
 653                                 return &fwlib::get_srvgrp_port($$hash{$key}[15],$prot);
 654                         }
 655                         elsif($prot eq 'ICMP'){
 656                                 return &fwlib::get_srvgrp_port($$hash{$key}[15],$prot);
 657                         }
 658                 }
 659         }
 660         #CHECK ICMP
 661         if ($$hash{$key}[7] ne 'ON' && $$hash{$key}[11] ne 'ON' && $SRC_TGT eq ''){
 662                 if($$hash{$key}[9] ne '' && $$hash{$key}[9] ne 'All ICMP-Types'){
 663                         return "--icmp-type $$hash{$key}[9] ";
 664                 }elsif($$hash{$key}[9] eq 'All ICMP-Types'){
 665                         return;
 666                 }
 667         }
 668 }