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package Net::DNS::RR::RT; use strict; use warnings; our $VERSION = (qw$Id: RT.pm 1857 2021-12-07 13:38:02Z 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 = shift; my ( $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 = shift; my ( $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 = shift; $self->preference(shift); $self->intermediate(shift); return; } sub preference { my $self = shift; $self->{preference} = 0 + shift if scalar @_; return $self->{preference} || 0; } sub intermediate { my $self = shift; $self->{intermediate} = Net::DNS::DomainName2535->new(shift) if scalar @_; 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>, RFC1183 Section 3.3 =cut