]> git.ipfire.org Git - people/teissler/ipfire-2.x.git/blobdiff - config/forwardfw/convert-portfw
Forward Firewall: 0.9.8.7 Implemented SNAT/DNAT
[people/teissler/ipfire-2.x.git] / config / forwardfw / convert-portfw
diff --git a/config/forwardfw/convert-portfw b/config/forwardfw/convert-portfw
new file mode 100755 (executable)
index 0000000..682199f
--- /dev/null
@@ -0,0 +1,144 @@
+#!/usr/bin/perl
+
+######################################################################## 
+# Script:      convert-portfw
+# Date:                19.03.2013
+# Author:      Alexander Marx (amarx@ipfire.org)
+########################################################################
+#
+# This script converts old portforwarding rules from old Firewall
+# to the new one. This is a 3-step process.
+# STEP1: read old config and normalize settings
+# STEP2: create new rules from old ones
+# STEP3: check if rule already exists, when not, put it into 
+#        /var/ipfire/forward/nat
+########################################################################
+require '/var/ipfire/general-functions.pl';
+my @values=();
+my @built_rules=();
+my %nat=();
+my $portfwconfig       = "${General::swroot}/portfw/config";
+my $confignat          = "${General::swroot}/forward/nat";
+my ($key,$flag,$prot,$ipfireport,$target,$targetport,$active,$alias,$source,$remark);
+my ($key1,$flag1,$prot1,$ipfireport1,$target1,$targetport1,$active1,$alias1,$source1,$remark1);
+my $count=0;
+my $jump;
+if(! -d "/var/log/converters"){ mkdir("/var/log/converters");}
+open(FILE, $portfwconfig) or die 'Unable to open config file.';
+my @current = <FILE>;
+close(FILE);
+open (LOG, ">/var/log/converters/portfw-convert.log") or die $!;
+open(ALIAS, "${General::swroot}/ethernet/aliases") or die 'Unable to open aliases file.';
+my @alias = <ALIAS>;
+close(ALIAS);
+&get_config;
+&build_rules;
+&write_rules;
+sub get_config
+{
+       print LOG "STEP 1:   Get config from old portforward\n#########################################\n";
+       foreach my $line (@current){
+               if($jump eq '1'){
+                       $jump='';
+                       $count++;
+                       next;
+               }
+               my $u=$count+1;
+               ($key,$flag,$prot,$ipfireport,$target,$targetport,$active,$alias,$source,$remark) = split(",",$line);
+               ($key1,$flag1,$prot1,$ipfireport1,$target1,$targetport1,$active1,$alias1,$source1,$remark1) = split(",",$current[$u]);
+               if ($flag1 eq '1'){
+                       $source=$source1;
+                       $jump='1';
+               }
+               my $now=localtime;
+               chomp($remark);
+               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: $jump\n";
+               push (@values,$prot.",".$ipfireport.",".$target.",".$targetport.",".$active.",".$alias.",".$source.",".$remark);
+               $count++;
+       }
+}
+sub build_rules
+{
+       print LOG "\nSTEP 2: Convert old portforwardrules in a useable format\n########################################################\n";
+       my $src;
+       my $src1;
+       my $ipfireip;
+       my $count=0;
+       my $stop;
+       #build rules for new firewall
+       foreach my $line (@values){
+               chomp ($line);
+               ($prot,$ipfireport,$target,$targetport,$active,$alias,$source,$remark)=split(",",$line);
+               $count++;
+               #get sourcepart
+               if($source eq '0.0.0.0/0'){
+                       $src  = 'std_net_src';
+                       $src1 = 'ALL';
+               }else{
+                       $src  = 'src_addr';
+                       my ($a,$b) = split("/",$source);
+                       $src1 = $a."/32";
+               }
+               #get ipfire ip
+               if($alias eq '0.0.0.0'){
+                       $alias='ALL';
+               }else{
+                       foreach my $ali (@alias){
+                               my ($alias_ip,$alias_active,$alias_name) = split (",",$ali);
+                               if($alias eq $alias_name){
+                                       $alias=$alias_name;
+                               }
+                       }
+               }
+               $active = uc $active;
+               $prot   = uc $prot;
+               $remark = chomp($remark);
+               push (@built_rules,"ACCEPT,NAT_DESTINATION,$active,$src,$src1,tgt_addr,$target/32,ON,$prot,,TGT_PORT,$targetport,$remark,00:00,00:00,ON,$alias,$ipfireport,dnat");
+               my $now=localtime;
+               print LOG "$now    Converted-> KEY: $count ACCEPT,NAT_DESTINATION,$active,$src,$src1,tgt_addr,$target/32,ON,$prot,,TGT_PORT,$targetport,$remark,00:00,00:00,ON,$alias,$ipfireport,dnat\n";
+       }
+}
+sub write_rules
+{
+       my $skip='';
+       my $id;
+       print LOG "\nSTEP 3: Create DNAT rules in new firewall\n#########################################\n";
+       &General::readhasharray($confignat,\%nat);
+       foreach my $line (@built_rules){
+               $skip='';
+               my ($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);
+               foreach my $key (sort keys %nat){
+                       if ($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]"){
+                               my $now=localtime;
+                               print LOG "$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";
+                               $skip='1';
+                       }
+               }
+               if ($skip ne '1'){
+                       $id = &General::findhasharraykey(\%nat);
+                       $nat{$id}[0]  = $action;
+                       $nat{$id}[1]  = $chain;
+                       $nat{$id}[2]  = $active;
+                       $nat{$id}[3]  = $src;
+                       $nat{$id}[4]  = $src1;
+                       $nat{$id}[5]  = $tgt;
+                       $nat{$id}[6]  = $tgt1;
+                       $nat{$id}[11] = $use_prot;
+                       $nat{$id}[12] = $prot;
+                       $nat{$id}[13] = $dummy;
+                       $nat{$id}[14] = $tgt_port;
+                       $nat{$id}[15] = $tgt_port1;
+                       $nat{$id}[16] = $remark;
+                       $nat{$id}[26] = $from;
+                       $nat{$id}[27] = $to;
+                       $nat{$id}[28] = $use_port;
+                       $nat{$id}[29] = $alias;
+                       $nat{$id}[30] = $ipfireport;
+                       $nat{$id}[31] = $dnat;
+                       my $now=localtime;
+                       print LOG "$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";
+               }
+       }
+       &General::writehasharray($confignat,\%nat);
+}
+close (LOG);