Annotation of embedaddon/nginx/contrib/geo2nginx.pl, revision 1.1.1.1
1.1 misho 1: #!/usr/bin/perl -w
2:
3: # (c) Andrei Nigmatulin, 2005
4: #
5: # this script provided "as is", without any warranties. use it at your own risk.
6: #
7: # special thanx to Andrew Sitnikov for perl port
8: #
9: # this script converts CSV geoip database (free download at http://www.maxmind.com/app/geoip_country)
10: # to format, suitable for use with nginx_http_geo module (http://sysoev.ru/nginx)
11: #
12: # for example, line with ip range
13: #
14: # "62.16.68.0","62.16.127.255","1041253376","1041268735","RU","Russian Federation"
15: #
16: # will be converted to four subnetworks:
17: #
18: # 62.16.68.0/22 RU;
19: # 62.16.72.0/21 RU;
20: # 62.16.80.0/20 RU;
21: # 62.16.96.0/19 RU;
22:
23:
24: use warnings;
25: use strict;
26:
27: while( <STDIN> ){
28: if (/"[^"]+","[^"]+","([^"]+)","([^"]+)","([^"]+)"/){
29: print_subnets($1, $2, $3);
30: }
31: }
32:
33: sub print_subnets {
34: my ($a1, $a2, $c) = @_;
35: my $l;
36: while ($a1 <= $a2) {
37: for ($l = 0; ($a1 & (1 << $l)) == 0 && ($a1 + ((1 << ($l + 1)) - 1)) <= $a2; $l++){};
38: print long2ip($a1) . "/" . (32 - $l) . " " . $c . ";\n";
39: $a1 += (1 << $l);
40: }
41: }
42:
43: sub long2ip {
44: my $ip = shift;
45:
46: my $str = 0;
47:
48: $str = ($ip & 255);
49:
50: $ip >>= 8;
51: $str = ($ip & 255).".$str";
52:
53: $ip >>= 8;
54: $str = ($ip & 255).".$str";
55:
56: $ip >>= 8;
57: $str = ($ip & 255).".$str";
58: }
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