16 files changed, 476 insertions, 0 deletions
diff --git a/bin/tests/system/zero/ans5/ans.pl b/bin/tests/system/zero/ans5/ans.pl
new file mode 100644
index 0000000..3ca1083
--- /dev/null
+++ b/bin/tests/system/zero/ans5/ans.pl
@@ -0,0 +1,81 @@
+#!/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.
+
+#
+# Don't respond if the "norespond" file exists; otherwise respond to
+# any A or AAAA query.
+#
+
+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 => "10.53.0.5",
+   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;
+
+my $octet = 0;
+
+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;
+
+	$packet->header->aa(1);
+	if ($qtype eq "A") {
+		$packet->push("answer",
+			      new Net::DNS::RR($qname .
+					       " 0 A 192.0.2." . $octet));
+		$octet = $octet + 1;
+	} elsif ($qtype eq "AAAA") {
+		$packet->push("answer",
+			      new Net::DNS::RR($qname .
+						" 300 AAAA 2001:db8:beef::1"));
+	}
+
+	$sock->send($packet->data);
+	print "RESPONSE:\n";
+	$packet->print;
+	print "\n";
+}
diff --git a/bin/tests/system/zero/clean.sh b/bin/tests/system/zero/clean.sh
new file mode 100644
index 0000000..2ef5727
--- /dev/null
+++ b/bin/tests/system/zero/clean.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+# 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.
+
+rm -f */named.conf
+rm -f */named.run
+rm -f */named.memstats
+rm -f ns2/example.db
+rm -f ns4/example.bk
+rm -f dig.out*
+rm -f query.list
+rm -f ns*/named.lock
+rm -f ns*/managed-keys.bind*
diff --git a/bin/tests/system/zero/ns1/named.conf.in b/bin/tests/system/zero/ns1/named.conf.in
new file mode 100644
index 0000000..1334c85
--- /dev/null
+++ b/bin/tests/system/zero/ns1/named.conf.in
@@ -0,0 +1,29 @@
+/*
+ * 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.
+ */
+
+options {
+	query-source address 10.53.0.1;
+	notify-source 10.53.0.1;
+	transfer-source 10.53.0.1;
+	port @PORT@;
+	pid-file "named.pid";
+	listen-on { 10.53.0.1; };
+	listen-on-v6 { none; };
+	recursion no;
+	dnssec-validation no;
+};
+
+zone "." {
+	type primary;
+	file "root.db";
+};
diff --git a/bin/tests/system/zero/ns1/root.db b/bin/tests/system/zero/ns1/root.db
new file mode 100644
index 0000000..fbcb3e2
--- /dev/null
+++ b/bin/tests/system/zero/ns1/root.db
@@ -0,0 +1,26 @@
+; 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.
+
+$TTL 300
+@	SOA ns1. hostmaster.warn.example. (
+	    1 3600 1200 604800 3600 )
+	NS  ns1.
+ns1. A 10.53.0.1
+;
+example. NS ns2.example.
+ns2.example. A 10.53.0.2
+example. NS ns4.example.
+ns4.example. A 10.53.0.4
+increment. NS incrementns.
+incrementns. A 10.53.0.5
+tld. NS ns2.tld.
+ns2.tld. A 10.53.0.2
+
diff --git a/bin/tests/system/zero/ns2/named.args b/bin/tests/system/zero/ns2/named.args
new file mode 100644
index 0000000..b20594e
--- /dev/null
+++ b/bin/tests/system/zero/ns2/named.args
@@ -0,0 +1 @@
+-m record,size,mctx -c named.conf -d 1 -D zero-ns2 -X named.lock -g -T maxcachesize=2097152
diff --git a/bin/tests/system/zero/ns2/named.conf.in b/bin/tests/system/zero/ns2/named.conf.in
new file mode 100644
index 0000000..751eafd
--- /dev/null
+++ b/bin/tests/system/zero/ns2/named.conf.in
@@ -0,0 +1,34 @@
+/*
+ * 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.
+ */
+
+options {
+	query-source address 10.53.0.2;
+	notify-source 10.53.0.2;
+	transfer-source 10.53.0.2;
+	port @PORT@;
+	pid-file "named.pid";
+	listen-on { 10.53.0.2; };
+	listen-on-v6 { none; };
+	recursion no;
+	dnssec-validation no;
+};
+
+zone "example" {
+	type primary;
+	file "example.db";
+};
+
+zone "tld" {
+	type primary;
+	file "tld.db";
+};
diff --git a/bin/tests/system/zero/ns2/tld.db b/bin/tests/system/zero/ns2/tld.db
new file mode 100644
index 0000000..0ffeb05
--- /dev/null
+++ b/bin/tests/system/zero/ns2/tld.db
@@ -0,0 +1,20 @@
+; 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.
+
+$TTL 1
+@	300	SOA	ns2.tld. hostmaster.ns2.tld. 0 1 1 1 1
+@	300	NS 	ns2.tld.
+ns2	300	A 	10.53.0.2
+;
+;	The TTL of these delegation records needs to 1.
+;
+one	1	NS 	ns4.one.tld.
+ns4.one	1	A	10.53.0.4
diff --git a/bin/tests/system/zero/ns3/named.args b/bin/tests/system/zero/ns3/named.args
new file mode 100644
index 0000000..9d89bd6
--- /dev/null
+++ b/bin/tests/system/zero/ns3/named.args
@@ -0,0 +1 @@
+-m record,size,mctx -c named.conf -d 1 -D zero-ns3 -X named.lock -g -T maxcachesize=2097152
diff --git a/bin/tests/system/zero/ns3/named.conf.in b/bin/tests/system/zero/ns3/named.conf.in
new file mode 100644
index 0000000..3492b9f
--- /dev/null
+++ b/bin/tests/system/zero/ns3/named.conf.in
@@ -0,0 +1,29 @@
+/*
+ * 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.
+ */
+
+options {
+	query-source address 10.53.0.3;
+	notify-source 10.53.0.3;
+	transfer-source 10.53.0.3;
+	port @PORT@;
+	pid-file "named.pid";
+	listen-on { 10.53.0.3; };
+	listen-on-v6 { none; };
+	recursion yes;
+	dnssec-validation yes;
+};
+
+zone "." {
+	type hint;
+	file "root.hint";
+};
diff --git a/bin/tests/system/zero/ns3/root.hint b/bin/tests/system/zero/ns3/root.hint
new file mode 100644
index 0000000..206e952
--- /dev/null
+++ b/bin/tests/system/zero/ns3/root.hint
@@ -0,0 +1,13 @@
+; 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.
+
+. NS ns1.
+ns1. A 10.53.0.1
diff --git a/bin/tests/system/zero/ns4/named.args b/bin/tests/system/zero/ns4/named.args
new file mode 100644
index 0000000..09d1fe0
--- /dev/null
+++ b/bin/tests/system/zero/ns4/named.args
@@ -0,0 +1 @@
+-m record,size,mctx -c named.conf -d 1 -D zero-ns4 -X named.lock -g -T maxcachesize=2097152
diff --git a/bin/tests/system/zero/ns4/named.conf.in b/bin/tests/system/zero/ns4/named.conf.in
new file mode 100644
index 0000000..fc8fec6
--- /dev/null
+++ b/bin/tests/system/zero/ns4/named.conf.in
@@ -0,0 +1,35 @@
+/*
+ * 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.
+ */
+
+options {
+	query-source address 10.53.0.4;
+	notify-source 10.53.0.4;
+	transfer-source 10.53.0.4;
+	port @PORT@;
+	pid-file "named.pid";
+	listen-on { 10.53.0.4; };
+	listen-on-v6 { none; };
+	recursion no;
+	dnssec-validation yes;
+};
+
+zone "example" {
+	type secondary;
+	primaries { 10.53.0.2; };
+	file "example.bk";
+};
+
+zone "one.tld" {
+	type primary;
+	file "one.tld.db";
+};
diff --git a/bin/tests/system/zero/ns4/one.tld.db b/bin/tests/system/zero/ns4/one.tld.db
new file mode 100644
index 0000000..491ba87
--- /dev/null
+++ b/bin/tests/system/zero/ns4/one.tld.db
@@ -0,0 +1,17 @@
+; 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.
+
+$TTL 1
+;	The TTL of all these records needs to be 1.
+@	1	SOA	ns4.one.tld. hostmaster.ns4.tld. 0 1 1 1 1
+@	1	NS 	ns4.one.tld.
+ns4	1	A	10.53.0.4
+www	1	A	10.53.0.4
diff --git a/bin/tests/system/zero/prereq.sh b/bin/tests/system/zero/prereq.sh
new file mode 100644
index 0000000..ec369f8
--- /dev/null
+++ b/bin/tests/system/zero/prereq.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+# 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.
+
+SYSTEMTESTTOP=..
+. $SYSTEMTESTTOP/conf.sh
+
+if $PERL -e 'use Net::DNS;' 2>/dev/null
+then
+    :
+else
+    echo_i "This test requires the Net::DNS library." >&2
+    exit 1
+fi
diff --git a/bin/tests/system/zero/setup.sh b/bin/tests/system/zero/setup.sh
new file mode 100644
index 0000000..592034c
--- /dev/null
+++ b/bin/tests/system/zero/setup.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+# 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.
+
+SYSTEMTESTTOP=..
+. $SYSTEMTESTTOP/conf.sh
+
+copy_setports ns1/named.conf.in ns1/named.conf
+copy_setports ns2/named.conf.in ns2/named.conf
+copy_setports ns3/named.conf.in ns3/named.conf
+copy_setports ns4/named.conf.in ns4/named.conf
+
+$SHELL ../genzone.sh 2 4 | sed -e 's/^$TTL 3600$/$TTL 0 ; force TTL to zero/' -e 's/86400.IN SOA/0 SOA/' > ns2/example.db
diff --git a/bin/tests/system/zero/tests.sh b/bin/tests/system/zero/tests.sh
new file mode 100644
index 0000000..0449552
--- /dev/null
+++ b/bin/tests/system/zero/tests.sh
@@ -0,0 +1,122 @@
+#!/bin/sh
+
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+#shellcheck source=conf.sh
+SYSTEMTESTTOP=..
+. "$SYSTEMTESTTOP/conf.sh"
+
+dig_with_opts() {
+	"$DIG" -p "${PORT}" "$@"
+}
+
+wait_for_pid() (
+	for pid in "$@"; do
+		kill -0 "$pid" 2>/dev/null && return 1
+	done
+	return 0
+)
+
+status=0
+n=0
+
+n=$((n+1))
+echo_i "check lookups against TTL=0 records ($n)"
+i=0
+ret=0
+passes=10
+dig_with_opts @10.53.0.2 axfr example | grep -v "^ds0" | \
+awk '$2 == "0" { print "-q", $1, $4; print "-q", "zzz"$1, $4;}' > query.list
+
+# add 1/5 second per query
+timeout=$(($(wc -l < query.list) / 5))
+while [ $i -lt $passes ]
+do
+	(dig_with_opts @10.53.0.3 -f query.list > "dig.out$i.1.test$n") & pid1="$!"
+	(dig_with_opts @10.53.0.3 -f query.list > "dig.out$i.2.test$n") & pid2="$!"
+	(dig_with_opts @10.53.0.3 -f query.list > "dig.out$i.3.test$n") & pid3="$!"
+	(dig_with_opts @10.53.0.3 -f query.list > "dig.out$i.4.test$n") & pid4="$!"
+	(dig_with_opts @10.53.0.3 -f query.list > "dig.out$i.5.test$n") & pid5="$!"
+	(dig_with_opts @10.53.0.3 -f query.list > "dig.out$i.6.test$n") & pid6="$!"
+
+	retry_quiet "$timeout" wait_for_pid "$pid1" "$pid2" "$pid3" "$pid4" "$pid5" "$pid6" || ret=1
+	kill -TERM "$pid1" "$pid2" "$pid3" "$pid4" "$pid5" "$pid6" 2>/dev/null
+
+	wait "$pid1" || ret=1
+	wait "$pid2" || ret=1
+	wait "$pid3" || ret=1
+	wait "$pid4" || ret=1
+	wait "$pid5" || ret=1
+	wait "$pid6" || ret=1
+
+	grep "status: SERVFAIL" "dig.out$i.1.test$n" > /dev/null && ret=1
+	grep "status: SERVFAIL" "dig.out$i.2.test$n" > /dev/null && ret=1
+	grep "status: SERVFAIL" "dig.out$i.3.test$n" > /dev/null && ret=1
+	grep "status: SERVFAIL" "dig.out$i.4.test$n" > /dev/null && ret=1
+	grep "status: SERVFAIL" "dig.out$i.5.test$n" > /dev/null && ret=1
+	grep "status: SERVFAIL" "dig.out$i.6.test$n" > /dev/null && ret=1
+	[ $ret = 1 ] && break
+	i=$((i+1))
+	echo_i "successfully completed pass $i of $passes"
+done
+if [ $ret != 0 ]; then echo_i "failed"; fi
+status=$((status+ret))
+
+repeat_query() (
+	i=0
+	while [ "$i" -lt "$1" ]; do
+		dig_with_opts +short "@$2" "$3" | tee "dig.out$i.test$n" || return 1
+		i=$((i+1))
+	done
+)
+
+count_unique() (
+	repeat_query "$@" | sort -u | wc -l
+)
+
+n=$((n+1))
+echo_i "check repeated recursive lookups of non recurring TTL=0 responses get new values ($n)"
+ret=0
+repeats=9
+count=$(count_unique "$repeats" 10.53.0.3 foo.increment)
+if [ "$count" -ne "$repeats" ] ; then echo_i "failed (count=$count, repeats=$repeats)"; ret=1; fi
+status=$((status+ret))
+
+n=$((n+1))
+echo_i "check lookups against TTL=1 records ($n)"
+i=0
+passes=10
+ret=0
+while [ $i -lt $passes ]
+do
+	dig_with_opts @10.53.0.3 www.one.tld > "dig.out$i.1.test$n" || ret=1
+	dig_with_opts @10.53.0.3 www.one.tld > "dig.out$i.2.test$n" || ret=1
+	dig_with_opts @10.53.0.3 www.one.tld > "dig.out$i.3.test$n" || ret=1
+	dig_with_opts @10.53.0.3 www.one.tld > "dig.out$i.4.test$n" || ret=1
+	dig_with_opts @10.53.0.3 www.one.tld > "dig.out$i.5.test$n" || ret=1
+	dig_with_opts @10.53.0.3 www.one.tld > "dig.out$i.6.test$n" || ret=1
+	grep "status: SERVFAIL" "dig.out$i.1.test$n" > /dev/null && ret=1
+	grep "status: SERVFAIL" "dig.out$i.2.test$n" > /dev/null && ret=1
+	grep "status: SERVFAIL" "dig.out$i.3.test$n" > /dev/null && ret=1
+	grep "status: SERVFAIL" "dig.out$i.4.test$n" > /dev/null && ret=1
+	grep "status: SERVFAIL" "dig.out$i.5.test$n" > /dev/null && ret=1
+	grep "status: SERVFAIL" "dig.out$i.6.test$n" > /dev/null && ret=1
+	[ $ret = 1 ] && break
+	i=$((i+1))
+	echo_i "successfully completed pass $i of $passes"
+	sleep 1
+done
+if [ $ret != 0 ]; then echo_i "failed"; fi
+status=$((status+ret))
+
+echo_i "exit status: $status"
+[ "$status" -eq 0 ] || exit 1