package Net::DNS::RR::HINFO;

# $Id: HINFO.pm,v 1.2 2002/02/13 03:53:59 ctriv Exp $

use strict;
use vars qw(@ISA);

use Net::DNS::Packet;

@ISA = qw(Net::DNS::RR);

sub new {
	my ($class, $self, $data, $offset) = @_;

	if ($self->{"rdlength"} > 0) {
		my ($cpu, $os, $len);

		($len) = unpack("\@$offset C", $$data);
		++$offset;
		$cpu = substr($$data, $offset, $len);
		$offset += $len;

		($len) = unpack("\@$offset C", $$data);
		++$offset;
		$os = substr($$data, $offset, $len);
		$offset += $len;

		$self->{"cpu"} = $cpu;
		$self->{"os"}  = $os;
	}

	return bless $self, $class;
}

sub new_from_string {
	my ($class, $self, $string) = @_;

	if ($string && $string =~ /^["'](.*?)["']\s+["'](.*?)["']$/) {
		$self->{"cpu"} = $1;
		$self->{"os"}  = $2;
	}

	return bless $self, $class;
}

sub rdatastr {
	my $self = shift;

	return exists $self->{"cpu"}
	       ? qq("$self->{cpu}" "$self->{os}")
	       : "; no data";
}

sub rr_rdata {
	my $self = shift;
	my $rdata = "";

	if (exists $self->{"cpu"}) {
		$rdata .= pack("C", length $self->{"cpu"});
		$rdata .= $self->{"cpu"};

		$rdata .= pack("C", length $self->{"os"});
		$rdata .= $self->{"os"};
	}

	return $rdata;
}

1;
__END__

=head1 NAME

Net::DNS::RR::HINFO - DNS HINFO resource record

=head1 SYNOPSIS

C<use Net::DNS::RR>;

=head1 DESCRIPTION

Class for DNS Host Information (HINFO) resource records.

=head1 METHODS

=head2 cpu

    print "cpu = ", $rr->cpu, "\n";

Returns the CPU type for this RR.

=head2 os

    print "os = ", $rr->os, "\n";

Returns the operating system type for this RR.

=head1 COPYRIGHT

Copyright (c) 1997-1998 Michael Fuhr.  All rights reserved.  This
program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself. 

=head1 SEE ALSO

L<perl(1)>, L<Net::DNS>, L<Net::DNS::Resolver>, L<Net::DNS::Packet>,
L<Net::DNS::Header>, L<Net::DNS::Question>, L<Net::DNS::RR>,
RFC 1035 Section 3.3.2

=cut