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Code Editor : PX.pm

package Net::DNS::RR::PX;

#
# $Id: PX.pm 1096 2012-12-28 13:35:15Z willem $
#
use vars qw($VERSION);
$VERSION = (qw$LastChangedRevision: 1096 $)[1]; # Unchanged since 1037

use base Net::DNS::RR;

=head1 NAME

Net::DNS::RR::PX - DNS PX resource record

=cut

use strict;
use integer;

use Net::DNS::DomainName;

sub decode_rdata {			## decode rdata from wire-format octet string
	my $self = shift;
	my ( $data, $offset, @opaque ) = @_;

$self->{preference} = unpack( "\@$offset n", $$data );
	( $self->{map822},  $offset ) = decode Net::DNS::DomainName2535($data,$offset+2,@opaque );
	( $self->{mapx400}, $offset ) = decode Net::DNS::DomainName2535($data,$offset,@opaque );
}

sub encode_rdata {			## encode rdata as wire-format octet string
	my $self = shift;
	my ( $offset, @opaque ) = @_;

return '' unless $self->{mapx400};
	my $rdata = pack( 'n', $self->{preference} );
	$rdata .= $self->{map822}->encode( $offset + length($rdata), @opaque );
	$rdata .= $self->{mapx400}->encode( $offset + length($rdata), @opaque );
}

sub format_rdata {			## format rdata portion of RR string.
	my $self = shift;

return '' unless $self->{mapx400};
	join ' ', $self->preference, $self->{map822}->string, $self->{mapx400}->string;
}

sub parse_rdata {			## populate RR from rdata in argument list
	my $self = shift;

$self->$_(shift) for qw(preference map822 mapx400);
}

sub preference {
	my $self = shift;

$self->{preference} = shift if @_;
	return 0 + ( $self->{preference} || 0 );
}

sub map822 {
	my $self = shift;

$self->{map822} = new Net::DNS::DomainName2535(shift) if @_;
	$self->{map822}->name if defined wantarray;
}

sub mapx400 {
	my $self = shift;

$self->{mapx400} = new Net::DNS::DomainName2535(shift) if @_;
	$self->{mapx400}->name if defined wantarray;
}

# sort RRs in numerically ascending order.
__PACKAGE__->set_rrsort_func(
	'preference',
	sub {
		my ( $a, $b ) = ( $Net::DNS::a, $Net::DNS::b );
		$a->{preference} <=> $b->{preference};
	} );

__PACKAGE__->set_rrsort_func(
	'default_sort',
	__PACKAGE__->get_rrsort_func('preference')

);

1;
__END__

=head1 SYNOPSIS

use Net::DNS;
    $rr = new Net::DNS::RR('name PX preference map822 mapx400');

=head1 DESCRIPTION

Class for DNS X.400 Mail Mapping Information (PX) resource records.

=head1 METHODS

The available methods are those inherited from the base class augmented
by the type-specific methods defined in this package.

Use of undocumented package features or direct access to internal data
structures is discouraged and could result in program termination or
other unpredictable behaviour.

=head2 preference

$preference = $rr->preference;

A 16 bit integer which specifies the preference
given to this RR among others at the same owner.
Lower values are preferred.

=head2 map822

$map822 = $rr->map822;

A domain name element containing <rfc822-domain>, the
RFC822 part of the MIXER Conformant Global Address Mapping.

=head2 mapx400

$mapx400 = $rr->mapx400;

A <domain-name> element containing the value of
<x400-in-domain-syntax> derived from the X.400 part of
the MIXER Conformant Global Address Mapping.

=head1 COPYRIGHT

This program is free software; you may redistribute it and/or
modify it under the same terms as Perl itself.

=head1 SEE ALSO

L<perl>, L<Net::DNS>, L<Net::DNS::RR>, RFC2163

=cut

${this.title}

Code Editor : PX.pm