lib/PXElator/dnsd.pm

package dnsd;
 
use warnings;
use strict;

use Net::DNS::Nameserver;
use Data::Dump qw/dump/;

sub reply_handler {
        my ($qname, $qclass, $qtype, $peerhost,$query,$conn) = @_;
        my ($rcode, @ans, @auth, @add);

        print "Received query from $peerhost to ". $conn->{"sockhost"}. "\n";
        $query->print;

        
        if ($qtype eq "A" && $qname eq "foo.example.com" ) {
                my ($ttl, $rdata) = (3600, "10.1.2.3");
                push @ans, Net::DNS::RR->new("$qname $ttl $qclass $qtype $rdata");
                $rcode = "NOERROR";
        }elsif( $qname eq "foo.example.com" ) {
                $rcode = "NOERROR";

        }else{
                 $rcode = "NXDOMAIN";
        }

        # mark the answer as authoritive (by setting the 'aa' flag
        return ($rcode, \@ans, \@auth, \@add, { aa => 1 });
}

sub start {
        my $ns = Net::DNS::Nameserver->new(
                LocalPort    => 53,
                ReplyHandler => \&reply_handler,
                Verbose      => 1,
        ) || die "couldn't create nameserver object\n";

        warn dump( $ns );

        $ns->main_loop;
}

1;
1	package dnsd;
2
3	use warnings;
4	use strict;
5
6	use Net::DNS::Nameserver;
7	use Data::Dump qw/dump/;
8
9	sub reply_handler {
10	my ($qname, $qclass, $qtype, $peerhost,$query,$conn) = @_;
11	my ($rcode, @ans, @auth, @add);
12
13	print "Received query from $peerhost to ". $conn->{"sockhost"}. "\n";
14	$query->print;
15
16
17	if ($qtype eq "A" && $qname eq "foo.example.com" ) {
18	my ($ttl, $rdata) = (3600, "10.1.2.3");
19	push @ans, Net::DNS::RR->new("$qname $ttl $qclass $qtype $rdata");
20	$rcode = "NOERROR";
21	}elsif( $qname eq "foo.example.com" ) {
22	$rcode = "NOERROR";
23
24	}else{
25	$rcode = "NXDOMAIN";
26	}
27
28	# mark the answer as authoritive (by setting the 'aa' flag
29	return ($rcode, \@ans, \@auth, \@add, { aa => 1 });
30	}
31
32	sub start {
33	my $ns = Net::DNS::Nameserver->new(
34	LocalPort => 53,
35	ReplyHandler => \&reply_handler,
36	Verbose => 1,
37	) \|\| die "couldn't create nameserver object\n";
38
39	warn dump( $ns );
40
41	$ns->main_loop;
42	}
43
44	1;