1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
package Net::DNS::RR::SRV;
#
# $Id: SRV.pm 583 2006-05-03 12:24:18Z olaf $
#
use strict;
BEGIN {
eval { require bytes; }
}
use vars qw(@ISA $VERSION);
@ISA = qw(Net::DNS::RR);
$VERSION = (qw$LastChangedRevision: 583 $)[1];
__PACKAGE__->set_rrsort_func("priority",
sub {
my ($a,$b)=($Net::DNS::a,$Net::DNS::b);
$a->{'priority'} <=> $b->{'priority'}
||
$b->{'weight'} <=> $a->{'weight'}
}
);
__PACKAGE__->set_rrsort_func("default_sort",
__PACKAGE__->get_rrsort_func("priority")
);
__PACKAGE__->set_rrsort_func("weight",
sub {
my ($a,$b)=($Net::DNS::a,$Net::DNS::b);
$b->{"weight"} <=> $a->{"weight"}
||
$a->{"priority"} <=> $b->{"priority"}
}
);
sub new {
my ($class, $self, $data, $offset) = @_;
if ($self->{'rdlength'} > 0) {
@{$self}{qw(priority weight port)} = unpack("\@$offset n3", $$data);
$offset += 3 * Net::DNS::INT16SZ();
($self->{'target'}) = Net::DNS::Packet::dn_expand($data, $offset);
}
return bless $self, $class;
}
sub new_from_string {
my ($class, $self, $string) = @_;
if ($string && ($string =~ /^(\d+)\s+(\d+)\s+(\d+)\s+(\S+)$/)) {
@{$self}{qw(priority weight port target)} = ($1, $2, $3, $4);
$self->{'target'} =~ s/\.+$//;
}
return bless $self, $class;
}
sub rdatastr {
my $self = shift;
my $rdatastr;
if (exists $self->{'priority'}) {
$rdatastr = join(' ', @{$self}{qw(priority weight port target)});
$rdatastr =~ s/(.*[^\.])$/$1./;
} else {
$rdatastr = '';
}
return $rdatastr;
}
sub rr_rdata {
my ($self, $packet, $offset) = @_;
my $rdata = '';
if (exists $self->{'priority'}) {
$rdata .= pack('n3', @{$self}{qw(priority weight port)});
$rdata .= $self->_name2wire ($self->{"target"});
}
return $rdata;
}
1;
__END__
=head1 NAME
Net::DNS::RR::SRV - DNS SRV resource record
=head1 SYNOPSIS
C<use Net::DNS::RR>;
=head1 DESCRIPTION
Class for DNS Service (SRV) resource records.
=head1 METHODS
=head2 priority
print "priority = ", $rr->priority, "\n";
Returns the priority for this target host.
=head2 weight
print "weight = ", $rr->weight, "\n";
Returns the weight for this target host.
=head2 port
print "port = ", $rr->port, "\n";
Returns the port on this target host for the service.
=head2 target
print "target = ", $rr->target, "\n";
Returns the target host.
=head1 COPYRIGHT
Copyright (c) 1997-2002 Michael Fuhr.
Portions Copyright (c) 2002-2004 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 2782
=cut
|
