#
# $Id: rdata.pm 49 2009-05-31 13:15:34Z VinsWorldcom $
#
package Net::Frame::Layer::DNS::RR::rdata;
use strict; use warnings;
use Net::Frame::Layer qw(:consts :subs);
our @ISA = qw(Net::Frame::Layer Exporter);
our @AS = qw(
rdata
);
__PACKAGE__->cgBuildIndices;
__PACKAGE__->cgBuildAccessorsScalar(\@AS);
use Net::Frame::Layer::DNS;
sub unpack {
my $self = shift;
# must include rdlength on calls to DNS::RR::rdata
my ($rdlength, $rdata) =
$self->SUPER::unpack('n a*', $self->raw)
or return;
$self->rdata(CORE::unpack "H*", (substr $rdata, 0, $rdlength));
$self->payload(substr $self->raw, $rdlength+2);
return $self;
}
sub encapsulate {
my $self = shift;
return $self->nextLayer if $self->nextLayer;
if ($self->payload) {
return 'DNS::RR';
}
NF_LAYER_NONE;
}
sub print {
my $self = shift;
my $l = $self->layer;
my $buf = sprintf
"$l: rdata:%s",
$self->rdata;
return $buf;
}
1;
__END__
=head1 NAME
Net::Frame::Layer::DNS::RR::rdata - DNS Resource Record generic rdata type
=head1 SYNOPSIS
use Net::Frame::Layer::DNS::RR::rdata;
=head1 DESCRIPTION
This modules implements the decoding of a DNS Resource Record with an
rdata type for which there isn't a decoder. B<Net::Frame::Layer::DNS::RR>
calls this as needed to assist in C<rdata> decoding.
See also B<Net::Frame::Layer> for other attributes and methods.
=head1 ATTRIBUTES
The following are inherited attributes. See B<Net::Frame::Layer> for more information.
=over 4
=item B<raw>
=item B<payload>
=item B<nextLayer>
=back
=head1 METHODS
The following are inherited methods. Some of them may be overriden in this layer, and some others may not be meaningful in this layer. See B<Net::Frame::Layer> for more information.
=over 4
=item B<layer>
=item B<computeLengths>
=item B<computeChecksums>
=item B<pack>
=item B<unpack>
=item B<encapsulate>
=item B<getLength>
=item B<getPayloadLength>
=item B<print>
=item B<dump>
=back
=head1 CONSTANTS
No constants here.
=head1 SEE ALSO
L<Net::Frame::Layer::DNS>, L<Net::Frame::Layer::DNS::RR>, L<Net::Frame::Layer>
=head1 AUTHOR
Michael Vincent
=head1 COPYRIGHT AND LICENSE
Copyright (c) 2012, Michael Vincent
You may distribute this module under the terms of the Artistic license.
See LICENSE.Artistic file in the source distribution archive.
=cut