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#!/usr/bin/perl -w
# Copyright (c) 2000 RIPE NCC
#
# All Rights Reserved
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose and without fee is hereby granted,
# provided that the above copyright notice appear in all copies and that
# both that copyright notice and this permission notice appear in
# supporting documentation, and that the name of the author not be
# used in advertising or publicity pertaining to distribution of the
# software without specific, written prior permission.
#
# THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS; IN NO EVENT SHALL
# AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
# AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#------------------------------------------------------------------------------
# Module Header
# Filename : ipcount.pl
# Purpose : IP addresses calculator
# Author : Manuel Valente <manuel@ripe.net>
# Date : 20000329
# Description :
# Language Version : Perl 5
# OSs Tested : BSDI 3.1
# Command Line :
# Input Files :
# Output Files :
# External Programs : Net::IP.pm
# Problems :
# To Do :
# Comments :
# $Id: ipcount,v 1.3 2002/10/15 09:18:14 manuel Exp $
#------------------------------------------------------------------------------
use strict;
use Math::BigInt;
use Net::IP qw(:PROC);
use Getopt::Std;
my %opts;
getopts ('rd:',\%opts);
scalar (@ARGV) < 1 and usage();
my $arg = join '',@ARGV;
$arg =~ s/\s+//g;
my $ip = new Net::IP($arg) or die ("Cannot create IP object $arg: ".Error());
my @list = $ip->find_prefixes() or die ($ip->error());
# Cut down the supplied range in smaller prefixes
if ($opts{d})
{
if (scalar(@list) > 1)
{
$ip->set ($list[0]) or die (Error());
warn ("\nWarning: The supplied Range does not fit in one single prefix.\n");
warn ("I will use the first prefix only (".$ip->print.")\n\n");
}
my $size = new Math::BigInt (2);
$size = $size->bpow (ip_iplengths($ip->version) - $opts{d}) - 1;
my $current = new Net::IP($ip->ip);
my $last = new Net::IP($ip->last_ip);
my $new_ip = new Net::IP(0);
my $count;
while ($current->bincomp ('lt', $last))
{
$new_ip->set($current->last_ip.'+'.$size) or die (Error());
print $new_ip->print,"\n";
if ($opts{r})
{
print $new_ip->reverse_ip,"\n";
}
$current->set($new_ip->last_ip .'+ 1') or die (Error());
$count++;
}
printf ("\nFound %s /%ss in %s\n\n",$count, $opts{d}, $ip->print);
exit;
}
my ($addr,@pr,$tot);
foreach (@list)
{
$addr = new Net::IP ($_) or die ("Cannot create IP object $_: ".Error());
printf ("%18s %15s - %-15s [%s]\n",$addr->print(),$addr->ip(),$addr->last_ip(), $addr->size());
if ($opts{r})
{
print $addr->reverse_ip,"\n";
}
$tot += $addr->size();
push (@pr,'/'.$addr->prefixlen());
};
if (scalar(@list) > 1)
{
print "\n";
printf ("%18s %15s - %-15s [%s]\n",$ip->ip().(join ',',@pr),$ip->ip(),$ip->last_ip(),$tot);
};
# Print usage and die
sub usage
{
print "
Usage:
ipcount [-r] [-d <prefix>] address
-r: Print Reverse Ranges
-d <prefix>: Cut down the original prefix in several prefixes
The address range can be one of:
ipcount IP + size
ipcount IP1 - IP2
ipcount IP/len
";
exit (1);
};
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