package Net::DNS::RR::GPOS;
#
# $Id: GPOS.pm 1188 2014-04-03 18:54:34Z willem $
#
use vars qw($VERSION);
$VERSION = (qw$LastChangedRevision: 1188 $)[1];
use strict;
use base qw(Net::DNS::RR);
=head1 NAME
Net::DNS::RR::GPOS - DNS GPOS resource record
=cut
use integer;
use Carp;
use Net::DNS::Text;
sub decode_rdata { ## decode rdata from wire-format octet string
my $self = shift;
my ( $data, $offset ) = @_;
my $limit = $offset + $self->{rdlength};
( $self->{latitude}, $offset ) = decode Net::DNS::Text( $data, $offset ) if $offset < $limit;
( $self->{longitude}, $offset ) = decode Net::DNS::Text( $data, $offset ) if $offset < $limit;
( $self->{altitude}, $offset ) = decode Net::DNS::Text( $data, $offset ) if $offset < $limit;
croak('corrupt GPOS data') unless $offset == $limit; # more or less FUBAR
}
sub encode_rdata { ## encode rdata as wire-format octet string
my $self = shift;
return '' unless defined $self->{altitude};
join '', map $self->{$_}->encode, qw(latitude longitude altitude);
}
sub format_rdata { ## format rdata portion of RR string.
my $self = shift;
return '' unless defined $self->{altitude};
join ' ', map $self->{$_}->string, qw(latitude longitude altitude);
}
sub parse_rdata { ## populate RR from rdata in argument list
my $self = shift;
$self->latitude(shift);
$self->longitude(shift);
$self->altitude(shift);
die 'too many arguments for GPOS' if scalar @_;
}
sub defaults() { ## specify RR attribute default values
my $self = shift;
$self->parse_rdata(qw(0.0 0.0 0.0));
}
sub latitude {
my $self = shift;
$self->{latitude} = _fp2text(shift) if scalar @_;
_text2fp( $self->{latitude} ) if defined wantarray;
}
sub longitude {
my $self = shift;
$self->{longitude} = _fp2text(shift) if scalar @_;
_text2fp( $self->{longitude} ) if defined wantarray;
}
sub altitude {
my $self = shift;
$self->{altitude} = _fp2text(shift) if scalar @_;
_text2fp( $self->{altitude} ) if defined wantarray;
}
########################################
sub _fp2text {
return new Net::DNS::Text( sprintf( '%1.10g', shift ) );
}
sub _text2fp {
no integer;
return 0.0 + shift->value;
}
1;
__END__
=head1 SYNOPSIS
use Net::DNS;
$rr = new Net::DNS::RR('name GPOS latitude longitude altitude');
=head1 DESCRIPTION
Class for DNS Geographical Position (GPOS) 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 latitude
$latitude = $rr->latitude;
$rr->latitude( $latitude );
Floating-point representation of latitude, in degrees.
=head2 longitude
$longitude = $rr->longitude;
$rr->longitude( $longitude );
Floating-point representation of longitude, in degrees.
=head2 altitude
$altitude = $rr->altitude;
$rr->altitude( $altitude );
Floating-point representation of altitude, in metres.
=head1 COPYRIGHT
Copyright (c)1997-1998 Michael Fuhr.
All rights reserved.
This program is free software; you may redistribute it and/or
modify it under the same terms as Perl itself.
Package template (c)2009,2012 O.M.Kolkman and R.W.Franks.
=head1 SEE ALSO
L<perl>, L<Net::DNS>, L<Net::DNS::RR>, RFC1712
=cut