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package Net::DNS::RR::SOA;
# $Id: SOA.pm,v 1.5 2000/11/19 06:05:52 mfuhr Exp mfuhr $
use strict;
use vars qw(@ISA);
use Net::DNS::Packet;
@ISA = qw(Net::DNS::RR);
sub new {
my ($class, $self, $data, $offset) = @_;
if ($self->{"rdlength"} > 0) {
my ($mname, $rname);
($mname, $offset) = Net::DNS::Packet::dn_expand($data, $offset);
($rname, $offset) = Net::DNS::Packet::dn_expand($data, $offset);
my ($serial, $refresh, $retry, $expire, $minimum)
= unpack("\@$offset N5", $$data);
$self->{"mname"} = $mname;
$self->{"rname"} = $rname;
$self->{"serial"} = $serial;
$self->{"refresh"} = $refresh;
$self->{"retry"} = $retry;
$self->{"expire"} = $expire;
$self->{"minimum"} = $minimum;
}
return bless $self, $class;
}
sub new_from_string {
my ($class, $self, $string) = @_;
if ($string) {
$string =~ tr/()//d;
$string =~ s/;.*$//mg;
my ($mname, $rname, $serial,
$refresh, $retry, $expire, $minimum) = $string =~ /(\S+)/g;
$mname =~ s/\.+$//;
$rname =~ s/\.+$//;
$self->{"mname"} = $mname;
$self->{"rname"} = $rname;
$self->{"serial"} = $serial;
$self->{"refresh"} = $refresh;
$self->{"retry"} = $retry;
$self->{"expire"} = $expire;
$self->{"minimum"} = $minimum;
}
return bless $self, $class;
}
sub rdatastr {
my $self = shift;
my $rdatastr;
if (exists $self->{"mname"}) {
$rdatastr = "$self->{mname}. $self->{rname}. (\n";
$rdatastr .= "\t" x 5 . "$self->{serial}\t; Serial\n";
$rdatastr .= "\t" x 5 . "$self->{refresh}\t; Refresh\n";
$rdatastr .= "\t" x 5 . "$self->{retry}\t; Retry\n";
$rdatastr .= "\t" x 5 . "$self->{expire}\t; Expire\n";
$rdatastr .= "\t" x 5 . "$self->{minimum} )\t; Minimum TTL";
}
else {
$rdatastr = "; no data";
}
return $rdatastr;
}
sub rr_rdata {
my ($self, $packet, $offset) = @_;
my $rdata = "";
# Assume that if one field exists, they all exist. Script will
# print a warning otherwise.
if (exists $self->{"mname"}) {
$rdata .= $packet->dn_comp($self->{"mname"}, $offset);
$rdata .= $packet->dn_comp($self->{"rname"},
$offset + length $rdata);
$rdata .= pack("N5", $self->{"serial"},
$self->{"refresh"},
$self->{"retry"},
$self->{"expire"},
$self->{"minimum"});
}
return $rdata;
}
1;
__END__
=head1 NAME
Net::DNS::RR::SOA - DNS SOA resource record
=head1 SYNOPSIS
C<use Net::DNS::RR>;
=head1 DESCRIPTION
Class for DNS Start of Authority (SOA) resource records.
=head1 METHODS
=head2 mname
print "mname = ", $rr->mname, "\n";
Returns the domain name of the original or primary nameserver for
this zone.
=head2 rname
print "rname = ", $rr->rname, "\n";
Returns a domain name that specifies the mailbox for the person
responsible for this zone.
=head2 serial
print "serial = ", $rr->serial, "\n";
Returns the zone's serial number.
=head2 refresh
print "refresh = ", $rr->refresh, "\n";
Returns the zone's refresh interval.
=head2 retry
print "retry = ", $rr->retry, "\n";
Returns the zone's retry interval.
=head2 expire
print "expire = ", $rr->expire, "\n";
Returns the zone's expire interval.
=head2 minimum
print "minimum = ", $rr->minimum, "\n";
Returns the minimum (default) TTL for records in this zone.
=head1 COPYRIGHT
Copyright (c) 1997-1998 Michael Fuhr. All rights reserved. This
program is free software; you can 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 3.3.13
=cut
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