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Diffstat (limited to 'bin/tests/system/statistics/ans4/ans.pl')
| -rw-r--r-- | bin/tests/system/statistics/ans4/ans.pl | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/bin/tests/system/statistics/ans4/ans.pl b/bin/tests/system/statistics/ans4/ans.pl new file mode 100644 index 0000000..3a37a82 --- /dev/null +++ b/bin/tests/system/statistics/ans4/ans.pl @@ -0,0 +1,118 @@ +#!/usr/bin/perl -w + +# Copyright (C) Internet Systems Consortium, Inc. ("ISC") +# +# SPDX-License-Identifier: MPL-2.0 +# +# 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 https://mozilla.org/MPL/2.0/. +# +# See the COPYRIGHT file distributed with this work for additional +# information regarding copyright ownership. + +# +# Ad hoc name server +# + +use IO::File; +use IO::Socket; +use Net::DNS; +use Net::DNS::Packet; + +my $localport = int($ENV{'PORT'}); +if (!$localport) { $localport = 5300; } + +my $sock = IO::Socket::INET->new(LocalAddr => "10.53.0.4", + LocalPort => $localport, Proto => "udp") or die "$!"; + +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; + +for (;;) { + $sock->recv($buf, 512); + + print "**** request from " , $sock->peerhost, " port ", $sock->peerport, "\n"; + + my $packet; + + if ($Net::DNS::VERSION > 0.68) { + $packet = new Net::DNS::Packet(\$buf, 0); + $@ and die $@; + } else { + my $err; + ($packet, $err) = new Net::DNS::Packet(\$buf, 0); + $err and die $err; + } + + print "REQUEST:\n"; + $packet->print; + + $packet->header->qr(1); + + my @questions = $packet->question; + my $qname = $questions[0]->qname; + my $qtype = $questions[0]->qtype; + + my $donotrespond = 0; + + if ($qname eq "foo.info") { + $donotrespond = 1; + } elsif ($qname eq "cname1.example.com") { + # Data for the "cname + other data / 1" test + $packet->push("answer", new Net::DNS::RR("cname1.example.com 300 CNAME cname1.example.com")); + $packet->push("answer", new Net::DNS::RR("cname1.example.com 300 A 1.2.3.4")); + } elsif ($qname eq "cname2.example.com") { + # Data for the "cname + other data / 2" test: same RRs in opposite order + $packet->push("answer", new Net::DNS::RR("cname2.example.com 300 A 1.2.3.4")); + $packet->push("answer", new Net::DNS::RR("cname2.example.com 300 CNAME cname2.example.com")); + } elsif ($qname eq "www.example.org" || $qname eq "www.example.net" || + $qname eq "badcname.example.org" || + $qname eq "goodcname.example.org" || + $qname eq "foo.baddname.example.org" || + $qname eq "foo.gooddname.example.org") { + # Data for address/alias filtering. + $packet->header->aa(1); + if ($qtype eq "A") { + $packet->push("answer", + new Net::DNS::RR($qname . + " 300 A 192.0.2.1")); + } elsif ($qtype eq "AAAA") { + $packet->push("answer", + new Net::DNS::RR($qname . + " 300 AAAA 2001:db8:beef::1")); + } + } elsif ($qname eq "badcname.example.net" || + $qname eq "goodcname.example.net") { + # Data for CNAME/DNAME filtering. We need to make one-level + # delegation to avoid automatic acceptance for subdomain aliases + $packet->push("authority", new Net::DNS::RR("example.net 300 NS ns.example.net")); + $packet->push("additional", new Net::DNS::RR("ns.example.net 300 A 10.53.0.3")); + } elsif ($qname =~ /^nodata\.example\.net$/i) { + $packet->header->aa(1); + } elsif ($qname =~ /^nxdomain\.example\.net$/i) { + $packet->header->aa(1); + $packet->header->rcode(NXDOMAIN); + } elsif ($qname =~ /sub\.example\.org/) { + # Data for CNAME/DNAME filtering. The final answers are + # expected to be accepted regardless of the filter setting. + $packet->push("authority", new Net::DNS::RR("sub.example.org 300 NS ns.sub.example.org")); + $packet->push("additional", new Net::DNS::RR("ns.sub.example.org 300 A 10.53.0.3")); + } else { + # Data for the "bogus referrals" test + $packet->push("authority", new Net::DNS::RR("below.www.example.com 300 NS ns.below.www.example.com")); + $packet->push("additional", new Net::DNS::RR("ns.below.www.example.com 300 A 10.53.0.3")); + } + + if ($donotrespond == 0) { + $sock->send($packet->data); + print "RESPONSE:\n"; + $packet->print; + print "\n"; + } +} |