home *** CD-ROM | disk | FTP | other *** search
- package Net::DNS::RR::MX;
- #
- # $Id: MX.pm,v 2.102 2004/02/09 23:28:31 ctriv Exp $
- #
- use strict;
- use vars qw(@ISA $VERSION);
-
- use Net::DNS;
- use Net::DNS::Packet;
-
- @ISA = qw(Net::DNS::RR);
- $VERSION = (qw$Revision: 2.102 $)[1];
-
- sub new {
- my ($class, $self, $data, $offset) = @_;
-
- if ($self->{"rdlength"} > 0) {
- ($self->{"preference"}) = unpack("\@$offset n", $$data);
-
- $offset += &Net::DNS::INT16SZ;
-
- ($self->{"exchange"}) = Net::DNS::Packet::dn_expand($data, $offset);
- }
-
- return bless $self, $class;
- }
-
- sub new_from_string {
- my ($class, $self, $string) = @_;
-
- if ($string && ($string =~ /^(\d+)\s+(\S+)$/)) {
- $self->{"preference"} = $1;
- $self->{"exchange"} = $2;
- $self->{"exchange"} =~ s/\.+$//;;
- }
-
- return bless $self, $class;
- }
-
- sub rdatastr {
- my $self = shift;
-
- return defined $self->{"preference"}
- ? "$self->{preference} $self->{exchange}."
- : '';
- }
-
- sub rr_rdata {
- my ($self, $packet, $offset) = @_;
- my $rdata = "";
-
- if (exists $self->{"preference"}) {
- $rdata .= pack("n", $self->{"preference"});
- $rdata .= $packet->dn_comp($self->{"exchange"},
- $offset + length $rdata);
- }
-
- return $rdata;
- }
-
- sub _canonicalRdata {
- my ($self) = @_;
- my $rdata = "";
-
- if (exists $self->{"preference"}) {
- $rdata .= pack("n", $self->{"preference"});
- $rdata .= $self->_name2wire($self->{"exchange"})
- }
-
- return $rdata;
- }
-
-
- 1;
- __END__
-
- =head1 NAME
-
- Net::DNS::RR::MX - DNS MX resource record
-
- =head1 SYNOPSIS
-
- C<use Net::DNS::RR>;
-
- =head1 DESCRIPTION
-
- Class for DNS Mail Exchanger (MX) resource records.
-
- =head1 METHODS
-
- =head2 preference
-
- print "preference = ", $rr->preference, "\n";
-
- Returns the preference for this mail exchange.
-
- =head2 exchange
-
- print "exchange = ", $rr->exchange, "\n";
-
- Returns name of this mail exchange.
-
- =head1 COPYRIGHT
-
- Copyright (c) 1997-2002 Michael Fuhr.
-
- Portions Copyright (c) 2002-2003 Chris Reinhardt.
-
- 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>,
- RFC 1035 Section 3.3.9
-
- =cut
-