e741c3d8de193c7306ef52023d5ddf9edd4f9607
[people/teissler/ipfire-2.x.git] / config / forwardfw / convert-portfw
1 #!/usr/bin/perl
2 ###############################################################################
3 # #
4 # IPFire.org - A linux based firewall #
5 # Copyright (C) 2013 #
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 # Author: Alexander Marx (amarx@ipfire.org) #
22 ###############################################################################
23 # #
24 # This script converts old portforwarding rules from old Firewall #
25 # to the new one. This is a 3-step process. #
26 # STEP1: read old config and normalize settings #
27 # STEP2: create new rules from old ones #
28 # STEP3: check if rule already exists, when not, put it into #
29 # /var/ipfire/forward/nat #
30 ###############################################################################
31 require '/var/ipfire/general-functions.pl';
32 my @values=();
33 my @built_rules=();
34 my %nat=();
35 my $portfwconfig = "${General::swroot}/portfw/config";
36 my $confignat = "${General::swroot}/forward/config";
37 my ($key,$flag,$prot,$ipfireport,$target,$targetport,$active,$alias,$source,$remark);
38 my ($key1,$flag1,$prot1,$ipfireport1,$target1,$targetport1,$active1,$alias1,$source1,$remark1);
39 my $count=0;
40 my $jump;
41 if(! -d "/var/log/converters"){ mkdir("/var/log/converters");}
42 open(FILE, $portfwconfig) or die 'Unable to open config file.';
43 my @current = <FILE>;
44 close(FILE);
45 open (LOG, ">/var/log/converters/portfw-convert.log") or die $!;
46 open(ALIAS, "${General::swroot}/ethernet/aliases") or die 'Unable to open aliases file.';
47 my @alias = <ALIAS>;
48 close(ALIAS);
49 &get_config;
50 &build_rules;
51 &write_rules;
52 sub get_config
53 {
54 print LOG "STEP 1: Get config from old portforward\n#########################################\n";
55 foreach my $line (@current){
56 if($jump eq '1'){
57 $jump='';
58 $count++;
59 next;
60 }
61 my $u=$count+1;
62 ($key,$flag,$prot,$ipfireport,$target,$targetport,$active,$alias,$source,$remark) = split(",",$line);
63 ($key1,$flag1,$prot1,$ipfireport1,$target1,$targetport1,$active1,$alias1,$source1,$remark1) = split(",",$current[$u]);
64 if ($flag1 eq '1'){
65 $source=$source1;
66 $jump='1';
67 }
68 my $now=localtime;
69 chomp($remark);
70 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: $jump\n";
71 push (@values,$prot.",".$ipfireport.",".$target.",".$targetport.",".$active.",".$alias.",".$source.",".$remark);
72 $count++;
73 }
74 }
75 sub build_rules
76 {
77 print LOG "\nSTEP 2: Convert old portforwardrules in a useable format\n########################################################\n";
78 my $src;
79 my $src1;
80 my $ipfireip;
81 my $count=0;
82 my $stop;
83 #build rules for new firewall
84 foreach my $line (@values){
85 chomp ($line);
86 ($prot,$ipfireport,$target,$targetport,$active,$alias,$source,$remark)=split(",",$line);
87 $count++;
88 #get sourcepart
89 if($source eq '0.0.0.0/0'){
90 $src = 'std_net_src';
91 $src1 = 'ALL';
92 }else{
93 $src = 'src_addr';
94 my ($a,$b) = split("/",$source);
95 $src1 = $a."/32";
96 }
97 #get ipfire ip
98 if($alias eq '0.0.0.0'){
99 $alias='ALL';
100 }else{
101 foreach my $ali (@alias){
102 my ($alias_ip,$alias_active,$alias_name) = split (",",$ali);
103 if($alias eq $alias_ip){
104 chomp($alias_name);
105 $alias=$alias_name;
106 }
107 }
108 }
109 $active = uc $active;
110 $prot = uc $prot;
111 chomp($remark);
112 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");
113 my $now=localtime;
114 print LOG "$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";
115 }
116 }
117 sub write_rules
118 {
119 my $skip='';
120 my $id;
121 print LOG "\nSTEP 3: Create DNAT rules in new firewall\n#########################################\n";
122 &General::readhasharray($confignat,\%nat);
123 foreach my $line (@built_rules){
124 $skip='';
125 my ($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);
126 foreach my $key (sort keys %nat){
127 if ($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]"){
128 my $now=localtime;
129 print LOG "$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";
130 $skip='1';
131 }
132 }
133 if ($skip ne '1'){
134 $id = &General::findhasharraykey(\%nat);
135 $nat{$id}[0] = $action;
136 $nat{$id}[1] = $chain;
137 $nat{$id}[2] = $active;
138 $nat{$id}[3] = $src;
139 $nat{$id}[4] = $src1;
140 $nat{$id}[5] = $tgt;
141 $nat{$id}[6] = $tgt1;
142 $nat{$id}[11] = $use_prot;
143 $nat{$id}[12] = $prot;
144 $nat{$id}[13] = $dummy;
145 $nat{$id}[14] = $tgt_port;
146 $nat{$id}[15] = $tgt_port1;
147 $nat{$id}[16] = $remark;
148 $nat{$id}[26] = $from;
149 $nat{$id}[27] = $to;
150 $nat{$id}[28] = $use_port;
151 $nat{$id}[29] = $alias;
152 $nat{$id}[30] = $ipfireport;
153 $nat{$id}[31] = $dnat;
154 my $now=localtime;
155 print LOG "$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";
156 }
157 }
158 &General::writehasharray($confignat,\%nat);
159 }
160 close (LOG);