Line # Revision Author
1 16 dpavlin #!/usr/bin/perl -w
2 #
3 # Sort bind zone file by IP number
4 #
5 # 2003-05-03 Dobrica Pavlinusic <dpavlin@rot13.org>
6 #
7 # parse files in format
8 #
9 # name A 111.222.333.444
10 # name CNAME name
11 #
12 # and output sorted list
13
14 use strict;
15
16 my %a_rec;
17 my %cname;
18
19 while(<>) {
20 chomp;
21 my ($name,$type,$ip) = split (/\s+/,$_,3);
22 if (lc($type) eq "a") {
23 if ($ip =~ /(\d+)\.(\d+)\.(\d+)\.(\d+)/) {
24
25 my $i = ((((($1 * 255 + $2) * 255) + $3) * 255) + $4) * 100;
26 while ($a_rec{$i}) { $i++; }
27 #print "$i: $name $type $ip\n";
28 $a_rec{$i} = [ $name, $type ,$ip ];
29 } else {
30 print "; can't parse IP: $ip -- original line below:\n";
31 print "; $name\t$type\t$ip\n";
32 }
33 } elsif (lc($type) eq "cname") {
34 $cname{$ip} .= $name."\t";
35 } else {
36 print "; unknown type: $type -- original line below:\n";
37 print "; $name\t$type\t$ip\n";
38 }
39 }
40
41 print ";\n";
42 my $netmask_regex='^\d+\.\d+'; # bclass
43 my $net = "";
44
45 foreach my $key (sort(keys %a_rec)) {
46 my ($name,$type,$ip) = @{$a_rec{$key}};
47
48 if ($ip =~ /($netmask_regex)/) {
49 if ($1 ne $net) {
50 $net = $1;
51 print ";\n; network $net\n;\n";
52 }
53 } else {
54 print "; can't parse $ip to find network!\n";
55 }
56
57 # pretty format record
58 sub dump_rec {
59 my $name = shift @_;
60 print "$name\t";
61 print "\t" if (length $name < 8);
62 print shift @_,"\t",shift @_,"\n";
63 }
64
65 # dump a
66 dump_rec($name,$type,$ip);
67
68 # dump cname if exists
69 if ($cname{$a_rec{$key}[0]}) {
70 foreach my $alias (split(/\t/,$cname{$a_rec{$key}[0]})) {
71 undef $cname{$a_rec{$key}[0]};
72 dump_rec($alias,"CNAME",$a_rec{$key}[0]);
73 }
74 }
75 }
76
77 print "; CNAME to CNAME\n";
78 foreach my $alias (keys %cname) {
79 next if (! $cname{$alias});
80 foreach my $host (split(/\t/,$cname{$alias})) {
81 dump_rec($host,"CNAME",$alias);
82 }
83 }