package Net::DNS::RR::A;

# $Id: A.pm,v 1.2 2002/02/13 03:53:58 ctriv Exp $

use strict;
use vars qw(@ISA);

use Socket;
use Net::DNS;

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

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

	if ($self->{"rdlength"} > 0) {
		my $addr = inet_ntoa(substr($$data, $offset, 4));
		$self->{"address"} = $addr;
	}

	return bless $self, $class;
}

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

	if ($string && ($string =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)\s*$/)
	    && ($1 >= 0) && ($1 <= 255)
	    && ($2 >= 0) && ($2 <= 255)
	    && ($3 >= 0) && ($3 <= 255)
	    && ($4 >= 0) && ($4 <= 255) ) {

		$self->{"address"} = "$1.$2.$3.$4";
	}

	return bless $self, $class;
}

sub rdatastr {
	my $self = shift;

	return exists $self->{"address"} && $self->{"address"}
	       ? $self->{"address"}
	       : "; no data";
}

sub rr_rdata {
	my $self = shift;

	my $rdata = exists $self->{"address"}
		  ? inet_aton($self->{"address"})
		  : "";

	return $rdata;
}

1;
__END__

=head1 NAME

Net::DNS::RR::A - DNS A resource record

=head1 SYNOPSIS

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

=head1 DESCRIPTION

Class for DNS Address (A) resource records.

=head1 METHODS

=head2 address

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

Returns the RR's address field.

=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 3.4.1

=cut
