Adding upstream version 1:9.18.19.upstream/1%9.18.19upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 177 insertions, 0 deletions

diff --git a/bin/tests/system/resolver/ans8/ans.pl b/bin/tests/system/resolver/ans8/ans.pl
new file mode 100644
index 0000000..a3d06b6
--- /dev/null
+++ b/bin/tests/system/resolver/ans8/ans.pl
@@ -0,0 +1,177 @@
+#!/usr/bin/perl
+
+# 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.
+
+use IO::File;
+use IO::Socket;
+use Data::Dumper;
+use Net::DNS;
+use Net::DNS::Packet;
+use strict;
+
+# Ignore SIGPIPE so we won't fail if peer closes a TCP socket early
+local $SIG{PIPE} = 'IGNORE';
+
+# Flush logged output after every line
+local $| = 1;
+
+my $server_addr = "10.53.0.8";
+
+my $localport = int($ENV{'PORT'});
+if (!$localport) { $localport = 5300; }
+
+my $udpsock = IO::Socket::INET->new(LocalAddr => "$server_addr",
+   LocalPort => $localport, Proto => "udp", Reuse => 1) or die "$!";
+my $tcpsock = IO::Socket::INET->new(LocalAddr => "$server_addr",
+   LocalPort => $localport, Proto => "tcp", Listen => 5, Reuse => 1) or die "$!";
+
+print "listening on $server_addr:$localport.\n";
+
+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;
+$SIG{TERM} = \&rmpid;
+
+sub handleUDP {
+	my ($buf) = @_;
+	my $request;
+
+	if ($Net::DNS::VERSION > 0.68) {
+		$request = new Net::DNS::Packet(\$buf, 0);
+		$@ and die $@;
+	} else {
+		my $err;
+		($request, $err) = new Net::DNS::Packet(\$buf, 0);
+		$err and die $err;
+	}
+
+	my @questions = $request->question;
+	my $qname = $questions[0]->qname;
+	my $qtype = $questions[0]->qtype;
+	my $qclass = $questions[0]->qclass;
+	my $id = $request->header->id;
+
+	my $response = new Net::DNS::Packet($qname, $qtype, $qclass);
+	$response->header->qr(1);
+	$response->header->aa(1);
+	$response->header->tc(0);
+	$response->header->id($id);
+
+	# Responses to queries for no-questions/NS and ns.no-questions/A are
+	# _not_ malformed or truncated.
+	if ($qname eq "no-questions" && $qtype eq "NS") {
+		$response->push("answer", new Net::DNS::RR($qname . " 300 NS ns.no-questions"));
+		$response->push("additional", new Net::DNS::RR("ns.no-questions. 300 A 10.53.0.8"));
+		return $response->data;
+	} elsif ($qname eq "ns.no-questions") {
+		$response->push("answer", new Net::DNS::RR($qname . " 300 A 10.53.0.8"))
+			if ($qtype eq "A");
+		return $response->data;
+	} elsif ($qname =~ /\.formerr-to-all$/) {
+		$response->header->rcode("FORMERR");
+		return $response->data;
+	}
+
+	# don't use Net::DNS to construct the header only reply as early
+	# versions just get it completely wrong.
+
+	if ($qname eq "truncated.no-questions") {
+		# QR, AA, TC: forces TCP retry
+		return (pack("nnnnnn", $id, 0x8600, 0, 0, 0, 0));
+	} elsif ($qname eq "tcpalso.no-questions") {
+		# QR, REFUSED: forces TCP retry
+		return (pack("nnnnnn", $id, 0x8205, 0, 0, 0, 0));
+	}
+	# QR, AA
+	return (pack("nnnnnn", $id, 0x8400, 0, 0, 0, 0));
+}
+
+sub handleTCP {
+	my ($buf) = @_;
+	my $request;
+
+	if ($Net::DNS::VERSION > 0.68) {
+		$request = new Net::DNS::Packet(\$buf, 0);
+		$@ and die $@;
+	} else {
+		my $err;
+		($request, $err) = new Net::DNS::Packet(\$buf, 0);
+		$err and die $err;
+	}
+
+	my @questions = $request->question;
+	my $qname = $questions[0]->qname;
+	my $qtype = $questions[0]->qtype;
+	my $qclass = $questions[0]->qclass;
+	my $id = $request->header->id;
+
+	my @results = ();
+	my $response = new Net::DNS::Packet($qname, $qtype, $qclass);
+
+	$response->header->qr(1);
+	$response->header->aa(1);
+	$response->header->id($id);
+	$response->push("answer", new Net::DNS::RR("$qname 300 A 1.2.3.4"));
+
+	if ($qname eq "tcpalso.no-questions") {
+		# for this qname we also return a bad reply over TCP
+		# QR, REFUSED, no question section
+		push (@results, pack("nnnnnn", $id, 0x8005, 0, 0, 0, 0));
+	} else {
+		push(@results, $response->data);
+	}
+
+	return \@results;
+}
+
+# Main
+my $rin;
+my $rout;
+for (;;) {
+	$rin = '';
+	vec($rin, fileno($tcpsock), 1) = 1;
+	vec($rin, fileno($udpsock), 1) = 1;
+
+	select($rout = $rin, undef, undef, undef);
+
+	if (vec($rout, fileno($udpsock), 1)) {
+		printf "UDP request\n";
+		my $buf;
+		$udpsock->recv($buf, 512);
+		my $result = handleUDP($buf);
+		my $num_chars = $udpsock->send($result);
+		print "  Sent $num_chars bytes via UDP\n";
+	} elsif (vec($rout, fileno($tcpsock), 1)) {
+		my $conn = $tcpsock->accept;
+		my $buf;
+		for (;;) {
+			my $lenbuf;
+			my $n = $conn->sysread($lenbuf, 2);
+			last unless $n == 2;
+			my $len = unpack("n", $lenbuf);
+			$n = $conn->sysread($buf, $len);
+			last unless $n == $len;
+			print "TCP request\n";
+			my $result = handleTCP($buf);
+			foreach my $response (@$result) {
+				$len = length($response);
+				$n = $conn->syswrite(pack("n", $len), 2);
+				$n = $conn->syswrite($response, $len);
+				print "    Sent: $n chars via TCP\n";
+			}
+		}
+		$conn->close;
+	}
+}