mirror of
https://github.com/isc-projects/bind9.git
synced 2026-02-25 19:04:57 -05:00
101 lines
2.8 KiB
Perl
101 lines
2.8 KiB
Perl
#!/usr/bin/env perl
|
|
#
|
|
# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
|
|
#
|
|
# This Source Code Form is subject to the terms of the Mozilla Public
|
|
# License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
#
|
|
# See the COPYRIGHT file distributed with this work for additional
|
|
# information regarding copyright ownership.
|
|
|
|
use strict;
|
|
use warnings;
|
|
|
|
use IO::File;
|
|
use Getopt::Long;
|
|
use Net::DNS::Nameserver;
|
|
|
|
my $pidf = new IO::File "ans.pid", "w" or die "cannot open pid file: $!";
|
|
print $pidf "$$\n" or die "cannot write pid file: $!";
|
|
$pidf->close or die "cannot close pid file: $!";
|
|
sub rmpid { unlink "ans.pid"; exit 1; };
|
|
|
|
$SIG{INT} = \&rmpid;
|
|
$SIG{TERM} = \&rmpid;
|
|
|
|
my $localaddr = "10.53.0.3";
|
|
|
|
my $localport = int($ENV{'PORT'});
|
|
if (!$localport) { $localport = 5300; }
|
|
|
|
my $verbose = 0;
|
|
my $ttl = 60;
|
|
my $zone = "example.broken";
|
|
my $nsname = "ns3.$zone";
|
|
my $synth = "synth-then-dname.$zone";
|
|
my $synth2 = "synth2-then-dname.$zone";
|
|
|
|
sub reply_handler {
|
|
my ($qname, $qclass, $qtype, $peerhost, $query, $conn) = @_;
|
|
my ($rcode, @ans, @auth, @add);
|
|
|
|
print ("request: $qname/$qtype\n");
|
|
STDOUT->flush();
|
|
|
|
if ($qname eq "example.broken") {
|
|
if ($qtype eq "SOA") {
|
|
my $rr = new Net::DNS::RR("$qname $ttl $qclass SOA . . 0 0 0 0 0");
|
|
push @ans, $rr;
|
|
} elsif ($qtype eq "NS") {
|
|
my $rr = new Net::DNS::RR("$qname $ttl $qclass NS $nsname");
|
|
push @ans, $rr;
|
|
$rr = new Net::DNS::RR("$nsname $ttl $qclass A $localaddr");
|
|
push @add, $rr;
|
|
}
|
|
$rcode = "NOERROR";
|
|
} elsif ($qname eq "cname-to-$synth2") {
|
|
my $rr = new Net::DNS::RR("$qname $ttl $qclass CNAME name.$synth2");
|
|
push @ans, $rr;
|
|
$rr = new Net::DNS::RR("name.$synth2 $ttl $qclass CNAME name");
|
|
push @ans, $rr;
|
|
$rr = new Net::DNS::RR("$synth2 $ttl $qclass DNAME .");
|
|
push @ans, $rr;
|
|
$rcode = "NOERROR";
|
|
} elsif ($qname eq "$synth" || $qname eq "$synth2") {
|
|
if ($qtype eq "DNAME") {
|
|
my $rr = new Net::DNS::RR("$qname $ttl $qclass DNAME .");
|
|
push @ans, $rr;
|
|
}
|
|
$rcode = "NOERROR";
|
|
} elsif ($qname eq "name.$synth") {
|
|
my $rr = new Net::DNS::RR("$qname $ttl $qclass CNAME name.");
|
|
push @ans, $rr;
|
|
$rr = new Net::DNS::RR("$synth $ttl $qclass DNAME .");
|
|
push @ans, $rr;
|
|
$rcode = "NOERROR";
|
|
} elsif ($qname eq "name.$synth2") {
|
|
my $rr = new Net::DNS::RR("$qname $ttl $qclass CNAME name.");
|
|
push @ans, $rr;
|
|
$rr = new Net::DNS::RR("$synth2 $ttl $qclass DNAME .");
|
|
push @ans, $rr;
|
|
$rcode = "NOERROR";
|
|
} else {
|
|
$rcode = "REFUSED";
|
|
}
|
|
return ($rcode, \@ans, \@auth, \@add, { aa => 1 });
|
|
}
|
|
|
|
GetOptions(
|
|
'port=i' => \$localport,
|
|
'verbose!' => \$verbose,
|
|
);
|
|
|
|
my $ns = Net::DNS::Nameserver->new(
|
|
LocalAddr => $localaddr,
|
|
LocalPort => $localport,
|
|
ReplyHandler => \&reply_handler,
|
|
Verbose => $verbose,
|
|
);
|
|
|
|
$ns->main_loop;
|