172 lines
4.3 KiB
Perl
172 lines
4.3 KiB
Perl
package Net::DNS::RR::PX;
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use strict;
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use warnings;
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our $VERSION = (qw$Id: PX.pm 1945 2023-11-22 08:02:31Z willem $)[2];
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use base qw(Net::DNS::RR);
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=head1 NAME
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Net::DNS::RR::PX - DNS PX resource record
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=cut
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use integer;
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use Net::DNS::DomainName;
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sub _decode_rdata { ## decode rdata from wire-format octet string
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my ( $self, $data, $offset, @opaque ) = @_;
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$self->{preference} = unpack( "\@$offset n", $$data );
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( $self->{map822}, $offset ) = Net::DNS::DomainName2535->decode( $data, $offset + 2, @opaque );
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( $self->{mapx400}, $offset ) = Net::DNS::DomainName2535->decode( $data, $offset, @opaque );
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return;
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}
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sub _encode_rdata { ## encode rdata as wire-format octet string
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my ( $self, $offset, @opaque ) = @_;
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my $mapx400 = $self->{mapx400};
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my $rdata = pack( 'n', $self->{preference} );
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$rdata .= $self->{map822}->encode( $offset + 2, @opaque );
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$rdata .= $mapx400->encode( $offset + length($rdata), @opaque );
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return $rdata;
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}
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sub _format_rdata { ## format rdata portion of RR string.
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my $self = shift;
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my @rdata = ( $self->preference, $self->{map822}->string, $self->{mapx400}->string );
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return @rdata;
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}
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sub _parse_rdata { ## populate RR from rdata in argument list
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my ( $self, @argument ) = @_;
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for (qw(preference map822 mapx400)) { $self->$_( shift @argument ) }
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return;
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}
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sub preference {
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my ( $self, @value ) = @_;
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for (@value) { $self->{preference} = 0 + $_ }
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return $self->{preference} || 0;
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}
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sub map822 {
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my ( $self, @value ) = @_;
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for (@value) { $self->{map822} = Net::DNS::DomainName2535->new($_) }
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return $self->{map822} ? $self->{map822}->name : undef;
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}
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sub mapx400 {
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my ( $self, @value ) = @_;
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for (@value) { $self->{mapx400} = Net::DNS::DomainName2535->new($_) }
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return $self->{mapx400} ? $self->{mapx400}->name : undef;
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}
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my $function = sub { ## sort RRs in numerically ascending order.
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return $Net::DNS::a->{'preference'} <=> $Net::DNS::b->{'preference'};
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};
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__PACKAGE__->set_rrsort_func( 'preference', $function );
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__PACKAGE__->set_rrsort_func( 'default_sort', $function );
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1;
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__END__
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=head1 SYNOPSIS
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use Net::DNS;
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$rr = Net::DNS::RR->new('name PX preference map822 mapx400');
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=head1 DESCRIPTION
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Class for DNS X.400 Mail Mapping Information (PX) resource records.
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=head1 METHODS
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The available methods are those inherited from the base class augmented
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by the type-specific methods defined in this package.
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Use of undocumented package features or direct access to internal data
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structures is discouraged and could result in program termination or
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other unpredictable behaviour.
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=head2 preference
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$preference = $rr->preference;
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$rr->preference( $preference );
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A 16 bit integer which specifies the preference
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given to this RR among others at the same owner.
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Lower values are preferred.
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=head2 map822
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$map822 = $rr->map822;
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$rr->map822( $map822 );
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A domain name element containing <rfc822-domain>, the
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RFC822 part of the MIXER Conformant Global Address Mapping.
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=head2 mapx400
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$mapx400 = $rr->mapx400;
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$rr->mapx400( $mapx400 );
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A <domain-name> element containing the value of
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<x400-in-domain-syntax> derived from the X.400 part of
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the MIXER Conformant Global Address Mapping.
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=head1 COPYRIGHT
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Copyright (c)1997 Michael Fuhr.
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All rights reserved.
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Package template (c)2009,2012 O.M.Kolkman and R.W.Franks.
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=head1 LICENSE
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted, provided
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that the original copyright notices appear in all copies and that both
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copyright notice and this permission notice appear in supporting
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documentation, and that the name of the author not be used in advertising
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or publicity pertaining to distribution of the software without specific
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prior written permission.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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=head1 SEE ALSO
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L<perl> L<Net::DNS> L<Net::DNS::RR>
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L<RFC2163|https://tools.ietf.org/html/rfc2163>
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=cut
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