source/contrib/geo2nginx.pl

0001 #!/usr/bin/perl -w

0002
0003 # (c) Andrei Nigmatulin, 2005

0004 #

0005 # this script provided "as is", without any warranties. use it at your own risk.

0006 #

0007 # special thanx to Andrew Sitnikov for perl port

0008 #

0009 # this script converts CSV geoip database (free download at http://www.maxmind.com/app/geoip_country)

0010 # to format, suitable for use with nginx_http_geo module (http://sysoev.ru/nginx)

0011 #

0012 # for example, line with ip range

0013 #

0014 #   "62.16.68.0","62.16.127.255","1041253376","1041268735","RU","Russian Federation"

0015 #

0016 # will be converted to four subnetworks:

0017 #

0018 #   62.16.68.0/22 RU;

0019 #   62.16.72.0/21 RU;

0020 #   62.16.80.0/20 RU;

0021 #   62.16.96.0/19 RU;

0022
0023
0024 use warnings;
0025 use strict;
0026
0027 while( <STDIN> ){
0028     if (/"[^"]+","[^"]+","([^"]+)","([^"]+)","([^"]+)"/){

0029         print_subnets($1, $2, $3);

0030     }

0031 }

0032

0033 sub  print_subnets {

0034     my ($a1, $a2, $c) = @_;

0035     my $l;

0036     while ($a1 <= $a2) {

0037         for ($l = 0; ($a1 & (1 << $l)) == 0 && ($a1 + ((1 << ($l + 1)) - 1)) <= $a2; $l++){};

0038         print long2ip($a1) . "/" . (32 - $l) . " " . $c . ";\n";

0039         $a1 += (1 << $l);

0040     }

0041 }

0042

0043 sub long2ip {

0044     my $ip = shift;

0045

0046     my $str = 0;

0047

0048     $str = ($ip & 255);

0049

0050     $ip >>= 8;

0051     $str = ($ip & 255).".$str";

0052

0053     $ip >>= 8;

0054     $str = ($ip & 255).".$str";

0055

0056     $ip >>= 8;

0057     $str = ($ip & 255).".$str";

0058 }