151 lines
3.8 KiB
Perl
151 lines
3.8 KiB
Perl
package Net::DNS::RR::RT;
|
|
|
|
use strict;
|
|
use warnings;
|
|
our $VERSION = (qw$Id: RT.pm 1945 2023-11-22 08:02:31Z willem $)[2];
|
|
|
|
use base qw(Net::DNS::RR);
|
|
|
|
|
|
=head1 NAME
|
|
|
|
Net::DNS::RR::RT - DNS RT resource record
|
|
|
|
=cut
|
|
|
|
use integer;
|
|
|
|
use Net::DNS::DomainName;
|
|
|
|
|
|
sub _decode_rdata { ## decode rdata from wire-format octet string
|
|
my ( $self, $data, $offset, @opaque ) = @_;
|
|
|
|
$self->{preference} = unpack( "\@$offset n", $$data );
|
|
$self->{intermediate} = Net::DNS::DomainName2535->decode( $data, $offset + 2, @opaque );
|
|
return;
|
|
}
|
|
|
|
|
|
sub _encode_rdata { ## encode rdata as wire-format octet string
|
|
my ( $self, $offset, @opaque ) = @_;
|
|
|
|
return pack 'n a*', $self->preference, $self->{intermediate}->encode( $offset + 2, @opaque );
|
|
}
|
|
|
|
|
|
sub _format_rdata { ## format rdata portion of RR string.
|
|
my $self = shift;
|
|
|
|
return join ' ', $self->preference, $self->{intermediate}->string;
|
|
}
|
|
|
|
|
|
sub _parse_rdata { ## populate RR from rdata in argument list
|
|
my ( $self, @argument ) = @_;
|
|
|
|
for (qw(preference intermediate)) { $self->$_( shift @argument ) }
|
|
return;
|
|
}
|
|
|
|
|
|
sub preference {
|
|
my ( $self, @value ) = @_;
|
|
for (@value) { $self->{preference} = 0 + $_ }
|
|
return $self->{preference} || 0;
|
|
}
|
|
|
|
|
|
sub intermediate {
|
|
my ( $self, @value ) = @_;
|
|
for (@value) { $self->{intermediate} = Net::DNS::DomainName2535->new($_) }
|
|
return $self->{intermediate} ? $self->{intermediate}->name : undef;
|
|
}
|
|
|
|
|
|
my $function = sub { ## sort RRs in numerically ascending order.
|
|
return $Net::DNS::a->{'preference'} <=> $Net::DNS::b->{'preference'};
|
|
};
|
|
|
|
__PACKAGE__->set_rrsort_func( 'preference', $function );
|
|
|
|
__PACKAGE__->set_rrsort_func( 'default_sort', $function );
|
|
|
|
|
|
1;
|
|
__END__
|
|
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
use Net::DNS;
|
|
$rr = Net::DNS::RR->new('name RT preference intermediate');
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
Class for DNS Route Through (RT) 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;
|
|
$rr->preference( $preference );
|
|
|
|
A 16 bit integer representing the preference of the route.
|
|
Smaller numbers indicate more preferred routes.
|
|
|
|
=head2 intermediate
|
|
|
|
$intermediate = $rr->intermediate;
|
|
$rr->intermediate( $intermediate );
|
|
|
|
The domain name of a host which will serve as an intermediate
|
|
in reaching the host specified by the owner name.
|
|
The DNS RRs associated with the intermediate host are expected
|
|
to include at least one A, X25, or ISDN record.
|
|
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright (c)1997 Michael Fuhr.
|
|
|
|
All rights reserved.
|
|
|
|
Package template (c)2009,2012 O.M.Kolkman and R.W.Franks.
|
|
|
|
|
|
=head1 LICENSE
|
|
|
|
Permission to use, copy, modify, and distribute this software and its
|
|
documentation for any purpose and without fee is hereby granted, provided
|
|
that the original copyright notices appear in all copies and that both
|
|
copyright notice and this permission notice appear in supporting
|
|
documentation, and that the name of the author not be used in advertising
|
|
or publicity pertaining to distribution of the software without specific
|
|
prior written permission.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
DEALINGS IN THE SOFTWARE.
|
|
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<perl> L<Net::DNS> L<Net::DNS::RR>
|
|
L<RFC1183(3.3)|https://tools.ietf.org/html/rfc1183>
|
|
|
|
=cut
|