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package Net::DNS::RR::PX;
#
# $Id: PX.pm 551 2005-12-22 11:10:37Z olaf $
#
use strict;
BEGIN {
eval { require bytes; }
}
use vars qw(@ISA $VERSION);
@ISA = qw(Net::DNS::RR);
$VERSION = (qw$LastChangedRevision: 551 $)[1];
# Highest preference sorted first.
__PACKAGE__->set_rrsort_func("preference",
sub {
my ($a,$b)=($Net::DNS::a,$Net::DNS::b);
$a->{'preference'} <=> $b->{'preference'}
}
);
__PACKAGE__->set_rrsort_func("default_sort",
__PACKAGE__->get_rrsort_func("preference")
);
sub new {
my ($class, $self, $data, $offset) = @_;
if ($self->{"rdlength"} > 0) {
($self->{"preference"}) = unpack("\@$offset n", $$data);
$offset += Net::DNS::INT16SZ();
($self->{"map822"}, $offset) = Net::DNS::Packet::dn_expand($data, $offset);
($self->{"mapx400"}, $offset) = Net::DNS::Packet::dn_expand($data, $offset);
}
return bless $self, $class;
}
sub new_from_string {
my ($class, $self, $string) = @_;
if ($string && ($string =~ /^(\d+)\s+(\S+)\s+(\S+)$/)) {
$self->{"preference"} = $1;
$self->{"map822"} = $2;
$self->{"mapx400"} = $3;
$self->{"map822"} =~ s/\.+$//;;
$self->{"mapx400"} =~ s/\.+$//;;
}
return bless $self, $class;
}
sub rdatastr {
my $self = shift;
return $self->{"preference"}
? "$self->{preference} $self->{map822}. $self->{mapx400}."
: '';
}
sub rr_rdata {
my ($self, $packet, $offset) = @_;
my $rdata = "";
if (exists $self->{"preference"}) {
$rdata .= pack("n", $self->{"preference"});
$rdata .= $packet->dn_comp($self->{"map822"},
$offset + length $rdata);
$rdata .= $packet->dn_comp($self->{"mapx400"},
$offset + length $rdata);
}
return $rdata;
}
sub _canonicalRdata {
my ($self) = shift;
my $rdata = "";
if (exists $self->{"preference"}) {
$rdata .= pack("n", $self->{"preference"});
$rdata .= $self->_name2wire($self->{"map822"});
$rdata .= $self->_name2wire($self->{"mapx400"});
}
return $rdata;
}
1;
__END__
=head1 NAME
Net::DNS::RR::PX - DNS PX resource record
=head1 SYNOPSIS
C<use Net::DNS::RR>;
=head1 DESCRIPTION
Class for DNS X.400 Mail Mapping Information (PX) resource records.
=head1 METHODS
=head2 preference
print "preference = ", $rr->preference, "\n";
Returns the preference given to this RR.
=head2 map822
print "map822 = ", $rr->map822, "\n";
Returns the RFC822 part of the RFC1327 mapping information.
=head2 mapx400
print "mapx400 = ", $rr->mapx400, "\n";
Returns the X.400 part of the RFC1327 mapping information.
=head1 COPYRIGHT
Copyright (c) 1997-2002 Michael Fuhr.
Portions Copyright (c) 2002-2004 Chris Reinhardt.
Portions Copyright (c) 2005 Olaf Kolkman NLnet Labs.
All rights reserved. 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(1)>, L<Net::DNS>, L<Net::DNS::Resolver>, L<Net::DNS::Packet>,
L<Net::DNS::Header>, L<Net::DNS::Question>, L<Net::DNS::RR>,
RFC822, RFC 1327, RFC 2163
=cut
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