88 lines
2.2 KiB
Perl
88 lines
2.2 KiB
Perl
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package Net::IP::CMatch;
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use 5.006001;
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use strict;
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use warnings;
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require Exporter;
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our @ISA = qw(Exporter);
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our @EXPORT = qw(
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match_ip
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);
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our $VERSION = '0.02';
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require XSLoader;
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XSLoader::load('Net::IP::CMatch', $VERSION);
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1;
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__END__
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=head1 NAME
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Net::IP::CMatch - Efficiently match IP addresses against IP ranges with C.
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=head1 SYNOPSIS
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use Net::IP::CMatch;
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my $match = match_ip( $ip_addr, $match_ip1, $match_ip2, ... );
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=head1 DESCRIPTION
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Net::IP::CMatch is based upon, and does the same thing as Net::IP::Match.
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The unconditionally exported subroutine 'match_ip' determines if the
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ip to match ( first argument ) matches any of the subsequent ip arguments.
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Match arguments may be absolute quads, as '127.0.0.1', or contain
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mask bits as '111.245.76.248/29'.
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A true return value indicates a match. It was written in C, rather than
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a macro, preprocessed
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through Perl's source filter mechanism ( as is Net::IP::Match ), so that
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the ip arguments could be traditional perl scalars. The C code is
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lean and mean ( IMHO ).
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=head2 Example in Apache/mod_perl
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I use this module in my Apache server's mod_perl DB logging script to
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determine if an incoming IP is 'remote' or 'local'. First, I set up
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some variables in httpd.conf:
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PerlSetvar DBILogger_local_ips '222.234.52.192/29'
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PerlAddvar DBILogger_local_ips '111.245.76.248/29'
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PerlAddvar DBILogger_local_ips '10.0.0.0/24'
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PerlAddvar DBILogger_local_ips '172.16.0.0/12'
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PerlAddvar DBILogger_local_ips '192.168.0.0/16'
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PerlAddvar DBILogger_local_ips '127.0.0.1'
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These are the ip addresses I want to be considered local. In the
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mod_perl module:
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my @local_ips = $r->dir_config( "DBILogger_local_ips" );
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my $local = match_ip( $incoming_ip, @local_ips );
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Now $local is just that, and I set the database key accordingly.
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=head2 EXPORT
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'match_ip', unconditionally.
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=head1 SEE ALSO
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L<Net::IP::Match> by Marcel GrE<uuml>nauer.
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=head1 AUTHOR
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Beau E. Cox, E<lt>beaucox@hawaii.rr.comE<gt>
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=head1 COPYRIGHT AND LICENSE
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Copyright (C) 2004 by Beau E. Cox
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This library is free software; you can redistribute it and/or modify
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it under the same terms as Perl itself, either Perl version 5.6.1 or,
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at your option, any later version of Perl 5 you may have available.
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=cut
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