#!/usr/bin/env perl
#aslookup.pl - Looks up information on a given ASN or IP address
use strict;
use warnings;
use Net::Whois::RIPE;

sub handle_whois_output {
	my ($obj,$target) = @_;
	while($obj->isnt_exhausted) {
		my ($asnum,$asname,$descr,$origin,$route);
		my @whoisdata = split /\n/, $obj->value();
		foreach (@whoisdata) {
			$asnum = $_ if /^aut-num:/;
			$asname = $_ if /^as-name:/;
			$descr = $_ if /^descr:/;
			$origin = $_ if /^origin:/;
			$route = $_ if /^route[6]?:/;
		}
		$descr =~ s/.*:[ ]+//;
		if($target =~ /^AS.*/i) {
			$asnum =~ s/.*:[ ]+//;
			$asname =~ s/.*:[ ]+//;
			print "$target is $descr ($asname)\n";
		} else {
			$origin =~ s/.*:[ ]+//;
			$route =~ s/.*:[ ]+//;
			print "$route advertised by $origin - $descr\n";
		}
	}
}

my $default_as_server = "whois.radb.net";
my %whois_options = (
	"hostname"	=>	$default_as_server,
);
if($#ARGV < 0 || $ARGV[0] eq "") {
	print "Provide an IP or ASN to look up";
	exit;
}
my $target = $ARGV[0];
my $whois = Net::Whois::RIPE->new(%whois_options);
my $ripewhois = Net::Whois::RIPE->new();
my $witerator = $whois->query($target);
handle_whois_output($witerator,$target);
my $riterator = $ripewhois->query($target);
#handle_whois_output($riterator,$target);