config/firewall/convert-portfw

   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 # This script converts old portforwarding rules from old Firewall             #
  23 # to the new one. This is a 3-step process.                                   #
  24 # STEP1: read old config and normalize settings                               #
  25 # STEP2: create new rules from old ones                                       #
  26 # STEP3: check if rule already exists, when not, put it into                  #
  27 #        /var/ipfire/firewall/config                                          #
  28 ###############################################################################
  29 require '/var/ipfire/general-functions.pl';
  30 my @values=();
  31 my @built_rules=();
  32 my %nat=();
  33 my $portfwconfig        = "${General::swroot}/portfw/config";
  34 my $confignat           = "${General::swroot}/firewall/config";
  35 my ($key,$flag,$prot,$ipfireport,$target,$targetport,$active,$alias,$source,$remark);
  36 my ($key1,$flag1,$prot1,$ipfireport1,$target1,$targetport1,$active1,$alias1,$source1,$remark1);
  37 my $count=0;
  38 my $jump;
  39 if(! -d "/var/log/converters"){ mkdir("/var/log/converters");}
  40 open(FILE, $portfwconfig) or die 'Unable to open config file.';
  41 my @current = <FILE>;
  42 close(FILE);
  43 open (LOG, ">/var/log/converters/portfw-convert.log") or die $!;
  44 open(ALIAS, "${General::swroot}/ethernet/aliases") or die 'Unable to open aliases file.';
  45 my @alias = <ALIAS>;
  46 close(ALIAS);
  47 &get_config;
  48 &build_rules;
  49 &write_rules;
  50 sub get_config
  51 {
  52         print LOG "STEP 1:   Get config from old portforward\n#########################################\n";
  53         foreach my $line (@current){
  54                 if($jump eq '1'){
  55                         $jump='';
  56                         $count++;
  57                         next;
  58                 }
  59                 my $u=$count+1;
  60                 ($key,$flag,$prot,$ipfireport,$target,$targetport,$active,$alias,$source,$remark) = split(",",$line);
  61                 ($key1,$flag1,$prot1,$ipfireport1,$target1,$targetport1,$active1,$alias1,$source1,$remark1) = split(",",$current[$u]);
  62                 if ($flag1 eq '1'){
  63                         $source=$source1;
  64                         $jump='1';
  65                 }
  66                 my $now=localtime;
  67                 chomp($remark);
  68                 print LOG "$now   processing-> KEY: $key FLAG: $flag PROT: $prot FIREPORT: $ipfireport TARGET: $target TGTPORT: $targetport ACTIVE: $active ALIAS: $alias SOURCE: $source REM: $remark Doublerule: $jump\n";
  69                 push (@values,$prot.",".$ipfireport.",".$target.",".$targetport.",".$active.",".$alias.",".$source.",".$remark);
  70                 $count++;
  71         }
  72 }
  73 sub build_rules
  74 {
  75         print LOG "\nSTEP 2: Convert old portforwardrules in a useable format\n########################################################\n";
  76         my $src;
  77         my $src1;
  78         my $ipfireip;
  79         my $count=0;
  80         my $stop;
  81         #build rules for new firewall
  82         foreach my $line (@values){
  83                 chomp ($line);
  84                 ($prot,$ipfireport,$target,$targetport,$active,$alias,$source,$remark)=split(",",$line);
  85                 $count++;
  86                 #get sourcepart
  87                 if($source eq '0.0.0.0/0'){
  88                         $src  = 'std_net_src';
  89                         $src1 = 'ALL';
  90                 }else{
  91                         $src  = 'src_addr';
  92                         my ($a,$b) = split("/",$source);
  93                         $src1 = $a."/32";
  94                 }
  95                 #get ipfire ip
  96                 if($alias eq '0.0.0.0'){
  97                         $alias='ALL';
  98                 }else{
  99                         foreach my $ali (@alias){
 100                                 my ($alias_ip,$alias_active,$alias_name) = split (",",$ali);
 101                                 if($alias eq $alias_ip){
 102                                         chomp($alias_name);
 103                                         $alias=$alias_name;
 104                                 }
 105                         }
 106                 }
 107                 $active = uc $active;
 108                 $prot   = uc $prot;
 109                 chomp($remark);
 110                 push (@built_rules,"ACCEPT,FORWARDFW,$active,$src,$src1,tgt_addr,$target/32,ON,$prot,,TGT_PORT,$targetport,$remark,00:00,00:00,ON,$alias,$ipfireport,dnat");
 111                 my $now=localtime;
 112                 print LOG "$now    Converted-> KEY: $count ACCEPT,FORWARDFW,$active,$src,$src1,tgt_addr,$target/32,ON,$prot,,TGT_PORT,$targetport,$remark,00:00,00:00,ON,$alias,$ipfireport,dnat\n";
 113         }
 114 }
 115 sub write_rules
 116 {
 117         my $skip='';
 118         my $id;
 119         print LOG "\nSTEP 3: Create DNAT rules in new firewall\n#########################################\n";
 120         &General::readhasharray($confignat,\%nat);
 121         foreach my $line (@built_rules){
 122                 $skip='';
 123                 my ($action,$chain,$active,$src,$src1,$tgt,$tgt1,$use_prot,$prot,$dummy,$tgt_port,$tgt_port1,$remark,$from,$to,$use_port,$alias,$ipfireport,$dnat) = split (",",$line);
 124                 foreach my $key (sort keys %nat){
 125                         if ($line eq "$nat{$key}[0],$nat{$key}[1],$nat{$key}[2],$nat{$key}[3],$nat{$key}[4],$nat{$key}[5],$nat{$key}[6],$nat{$key}[11],$nat{$key}[12],$nat{$key}[13],$nat{$key}[14],$nat{$key}[15],$nat{$key}[16],$nat{$key}[26],$nat{$key}[27],$nat{$key}[28],$nat{$key}[29],$nat{$key}[30],$nat{$key}[31]"){
 126                                 my $now=localtime;
 127                                 print LOG "$now         SKIP->  Rule  $nat{$key}[0],$nat{$key}[1],$nat{$key}[2],$nat{$key}[3],$nat{$key}[4],$nat{$key}[5],$nat{$key}[6],$nat{$key}[11],$nat{$key}[12],$nat{$key}[13],$nat{$key}[14],$nat{$key}[15],$nat{$key}[16],$nat{$key}[26],$nat{$key}[27],$nat{$key}[28],$nat{$key}[29],$nat{$key}[30],$nat{$key}[31] ->EXISTS\n";
 128                                 $skip='1';
 129                         }
 130                 }
 131                 if ($skip ne '1'){
 132                         $id = &General::findhasharraykey(\%nat);
 133                         $nat{$id}[0]  = $action;
 134                         $nat{$id}[1]  = $chain;
 135                         $nat{$id}[2]  = $active;
 136                         $nat{$id}[3]  = $src;
 137                         $nat{$id}[4]  = $src1;
 138                         $nat{$id}[5]  = $tgt;
 139                         $nat{$id}[6]  = $tgt1;
 140                         $nat{$id}[11] = $use_prot;
 141                         $nat{$id}[12] = $prot;
 142                         $nat{$id}[13] = $dummy;
 143                         $nat{$id}[14] = $tgt_port;
 144                         $nat{$id}[15] = $tgt_port1;
 145                         $nat{$id}[16] = $remark;
 146                         $nat{$id}[26] = $from;
 147                         $nat{$id}[27] = $to;
 148                         $nat{$id}[28] = $use_port;
 149                         $nat{$id}[29] = $alias;
 150                         $nat{$id}[30] = $ipfireport;
 151                         $nat{$id}[31] = $dnat;
 152                         my $now=localtime;
 153                         print LOG "$now     NEW RULE->  Rule  $nat{$id}[0],$nat{$id}[1],$nat{$id}[2],$nat{$id}[3],$nat{$id}[4],$nat{$id}[5],$nat{$id}[6],$nat{$id}[11],$nat{$id}[12],$nat{$id}[13],$nat{$id}[14],$nat{$id}[15],$nat{$id}[16],$nat{$id}[26],$nat{$id}[27],$nat{$id}[28],$nat{$id}[29],$nat{$id}[30],$nat{$id}[31]\n";
 154                 }
 155         }
 156         &General::writehasharray($confignat,\%nat);
 157 }
 158 close (LOG);