1package Net::DNS::RR::CNAME;
2#
3# $Id: CNAME.pm 632 2007-03-12 13:24:21Z olaf $
4#
5use strict;
6BEGIN {
7    eval { require bytes; }
8}
9
10use vars qw(@ISA $VERSION);
11
12@ISA     = qw(Net::DNS::RR);
13$VERSION = (qw$LastChangedRevision: 632 $)[1];
14
15sub new {
16	my ($class, $self, $data, $offset) = @_;
17
18	if ($self->{"rdlength"} > 0) {
19		($self->{"cname"}) = Net::DNS::Packet::dn_expand($data, $offset);
20	}
21
22	return bless $self, $class;
23}
24
25sub new_from_string {
26	my ($class, $self, $string) = @_;
27
28	if ($string) {
29		$string =~ s/\.+$//;
30		$self->{"cname"} = $string;
31	}
32
33	return bless $self, $class;
34}
35
36sub rdatastr {
37	my $self = shift;
38
39	return $self->{"cname"} ? "$self->{cname}." : '';
40}
41
42sub rr_rdata {
43	my ($self, $packet, $offset) = @_;
44	my $rdata = "";
45
46	if (exists $self->{"cname"}) {
47		$rdata = $packet->dn_comp($self->{"cname"}, $offset);
48	}
49
50	return $rdata;
51}
52
53# rdata contains a compressed domainname... we should not have that.
54sub _canonicalRdata {
55	my ($self) = @_;
56	return $self->_name2wire(lc($self->{"cname"}));
57}
58
591;
60__END__
61
62=head1 NAME
63
64Net::DNS::RR::CNAME - DNS CNAME resource record
65
66=head1 SYNOPSIS
67
68C<use Net::DNS::RR>;
69
70=head1 DESCRIPTION
71
72Class for DNS Canonical Name (CNAME) resource records.
73
74=head1 METHODS
75
76=head2 cname
77
78    print "cname = ", $rr->cname, "\n";
79
80Returns the RR's canonical name.
81
82=head1 COPYRIGHT
83
84Copyright (c) 1997-2002 Michael Fuhr.
85
86Portions Copyright (c) 2002-2004 Chris Reinhardt.
87
88All rights reserved.  This program is free software; you may redistribute
89it and/or modify it under the same terms as Perl itself.
90
91=head1 SEE ALSO
92
93L<perl(1)>, L<Net::DNS>, L<Net::DNS::Resolver>, L<Net::DNS::Packet>,
94L<Net::DNS::Header>, L<Net::DNS::Question>, L<Net::DNS::RR>,
95RFC 1035 Section 3.3.1
96
97=cut
98