#!/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

DIGOPTS="-p ${PORT}"
RNDCCMD="$RNDC -c $SYSTEMTESTTOP/common/rndc.conf -p ${CONTROLPORT} -s"

status=0
n=0

getcookie() {
	awk '$2 == "COOKIE:" {
		print $3;
	}' < $1 | tr -d '\r'
}

fullcookie() {
	awk 'BEGIN { n = 0 }
	     // { v[n++] = length(); }
	     END { print (v[1] == v[2]); }'
}

havetc() {
	grep 'flags:.* tc[^;]*;' $1 > /dev/null
}

for bad in bad*.conf
do
	n=`expr $n + 1`
	echo_i "checking that named-checkconf detects error in $bad ($n)"
	ret=0
	$CHECKCONF $bad > /dev/null 2>&1 && ret=1
	if [ $ret != 0 ]; then echo_i "failed"; fi
	status=`expr $status + $ret`
done

for good in good*.conf
do
	n=`expr $n + 1`
	echo_i "checking that named-checkconf detects accepts $good ($n)"
	ret=0
	$CHECKCONF $good > /dev/null 2>&1 || ret=1
	if [ $ret != 0 ]; then echo_i "failed"; fi
	status=`expr $status + $ret`
done

n=`expr $n + 1`
echo_i "checking RCODE=FORMERR to query without question section and without COOKIE option ($n)"
ret=0
$DIG $DIGOPTS +qr +header-only +nocookie version.bind txt ch @10.53.0.1 > dig.out.test$n
grep COOKIE: dig.out.test$n > /dev/null && ret=1
grep "status: FORMERR" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "checking RCODE=NOERROR to query without question section and with COOKIE option ($n)"
ret=0
$DIG $DIGOPTS +qr +header-only +cookie version.bind txt ch @10.53.0.1 > dig.out.test$n
grep COOKIE: dig.out.test$n > /dev/null || ret=1
grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "checking COOKIE token is returned to empty COOKIE option ($n)"
ret=0
$DIG $DIGOPTS +cookie version.bind txt ch @10.53.0.1 > dig.out.test$n
grep COOKIE: dig.out.test$n > /dev/null || ret=1
grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "checking COOKIE is not returned when answer-cookie is false ($n)"
ret=0
$DIG $DIGOPTS +cookie version.bind txt ch @10.53.0.7 > dig.out.test$n
grep COOKIE: dig.out.test$n > /dev/null && ret=1
grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "checking response size without COOKIE ($n)"
ret=0
$DIG $DIGOPTS large.example txt @10.53.0.1 +ignore > dig.out.test$n
havetc dig.out.test$n || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "checking response size without valid COOKIE ($n)"
ret=0
$DIG $DIGOPTS +cookie large.example txt @10.53.0.1 +ignore > dig.out.test$n
havetc dig.out.test$n || ret=1
grep "; COOKIE:.*(good)" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "checking response size with COOKIE ($n)"
ret=0
$DIG $DIGOPTS +cookie large.example txt @10.53.0.1 > dig.out.test$n.l
cookie=`getcookie dig.out.test$n.l`
$DIG $DIGOPTS +qr +cookie=$cookie large.example txt @10.53.0.1 +ignore > dig.out.test$n
havetc dig.out.test$n && ret=1
grep "; COOKIE:.*(good)" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "checking response size with COOKIE recursive ($n)"
ret=0
$DIG $DIGOPTS +qr +cookie=$cookie large.xxx txt @10.53.0.1 +ignore > dig.out.test$n
havetc dig.out.test$n && ret=1
grep "; COOKIE:.*(good)" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "checking COOKIE is learnt for TCP retry ($n)"
ret=0
$DIG $DIGOPTS +qr +cookie large.example txt @10.53.0.1 > dig.out.test$n
linecount=`getcookie dig.out.test$n | wc -l`
if [ $linecount != 3 ]; then ret=1; fi
checkfull=`getcookie dig.out.test$n | fullcookie`
if [ $checkfull != 1 ]; then ret=1; fi
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "checking for COOKIE value in adb ($n)"
ret=0
rndc_dumpdb ns1
grep "10.53.0.2.*\[cookie=" ns1/named_dump.db.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "checking require-server-cookie default (no) ($n)"
ret=0
$DIG $DIGOPTS +qr +cookie +nobadcookie soa @10.53.0.1 > dig.out.test$n
grep BADCOOKIE dig.out.test$n > /dev/null && ret=1
linecount=`getcookie dig.out.test$n | wc -l`
if [ $linecount != 2 ]; then ret=1; fi
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "checking require-server-cookie yes ($n)"
ret=0
$DIG $DIGOPTS +qr +cookie +nobadcookie soa @10.53.0.3 > dig.out.test$n
grep "flags: qr[^;]* aa[ ;]" dig.out.test$n > /dev/null && ret=1
grep "flags: qr[^;]* ad[ ;]" dig.out.test$n > /dev/null && ret=1
grep BADCOOKIE dig.out.test$n > /dev/null || ret=1
linecount=`getcookie dig.out.test$n | wc -l`
if [ $linecount != 2 ]; then ret=1; fi
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "checking require-server-cookie yes with rate-limit ($n)"
ret=0
$DIG $DIGOPTS +qr +cookie +nobadcookie soa example @10.53.0.8 > dig.out.test$n
grep "flags: qr[^;]* ad[ ;]" dig.out.test$n > /dev/null && ret=1
grep BADCOOKIE dig.out.test$n > /dev/null || ret=1
linecount=`getcookie dig.out.test$n | wc -l`
if [ $linecount != 2 ]; then ret=1; fi
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "send undersized cookie ($n)"
ret=0
$DIG $DIGOPTS +qr +cookie=000000 soa @10.53.0.1 > dig.out.test$n || ret=1
grep "status: FORMERR" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "send oversized for named cookie ($n)"
ret=0
$DIG $DIGOPTS +qr +cookie=${cookie}00 soa @10.53.0.1 > dig.out.test$n || ret=1
grep "COOKIE: [a-f0-9]* (good)" dig.out.test$n > /dev/null 2>&1 || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "send oversized for named cookie with server requiring a good cookie ($n)"
ret=0
$DIG $DIGOPTS +qr +cookie=${cookie}00 soa @10.53.0.3 > dig.out.test$n || ret=1
grep "COOKIE: [a-f0-9]* (good)" dig.out.test$n > /dev/null 2>&1 || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

#
# Test shared cookie-secret support.
#
# NS4 has cookie-secret "569d36a6cc27d6bf55502183302ba352";
#
# NS5 has cookie-secret "569d36a6cc27d6bf55502183302ba352";
# NS5 has cookie-secret "6b300e27a0db46d4b046e4189790fa7d"; (alternate)
#
# NS6 has cookie-secret "6b300e27a0db46d4b046e4189790fa7d";
#
# Server cookies from NS4 are accepted by NS5 and not NS6
# Server cookies from NS5 are accepted by NS4 and not NS6
# Server cookies from NS6 are accepted by NS5 and not NS4
#
# Force local address so that the client's address is the same to all servers.
#

n=`expr $n + 1`
echo_i "get NS4 cookie for cross server checking ($n)"
ret=0
$DIG $DIGOPTS +cookie -b 10.53.0.4 soa . @10.53.0.4 > dig.out.test$n
grep "; COOKIE:.*(good)" dig.out.test$n > /dev/null || ret=1
ns4cookie=`getcookie dig.out.test$n`
test -n "$ns4cookie" || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "get NS5 cookie for cross server checking ($n)"
ret=0
$DIG $DIGOPTS +cookie -b 10.53.0.4 soa . @10.53.0.5 > dig.out.test$n
grep "; COOKIE:.*(good)" dig.out.test$n > /dev/null || ret=1
ns5cookie=`getcookie dig.out.test$n`
test -n "$ns5cookie" || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "get NS6 cookie for cross server checking ($n)"
ret=0
$DIG $DIGOPTS +cookie -b 10.53.0.4 soa . @10.53.0.6 > dig.out.test$n
grep "; COOKIE:.*(good)" dig.out.test$n > /dev/null || ret=1
ns6cookie=`getcookie dig.out.test$n`
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "test NS4 cookie on NS5 (expect success) ($n)"
ret=0
$DIG $DIGOPTS +cookie=$ns4cookie -b 10.53.0.4 +nobadcookie soa . @10.53.0.5 > dig.out.test$n
grep "; COOKIE:.*(good)" dig.out.test$n > /dev/null || ret=1
grep "status: NOERROR," dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "test NS4 cookie on NS6 (expect badcookie) ($n)"
ret=0
$DIG $DIGOPTS +cookie=$ns4cookie -b 10.53.0.4 +nobadcookie soa . @10.53.0.6 > dig.out.test$n
grep "; COOKIE:.*(good)" dig.out.test$n > /dev/null || ret=1
grep "status: BADCOOKIE," dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "test NS5 cookie on NS4 (expect success) ($n)"
ret=0
$DIG $DIGOPTS +cookie=$ns5cookie -b 10.53.0.4 +nobadcookie soa . @10.53.0.4 > dig.out.test$n
grep "; COOKIE:.*(good)" dig.out.test$n > /dev/null || ret=1
grep "status: NOERROR," dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "test NS5 cookie on NS6 (expect badcookie) ($n)"
ret=0
$DIG $DIGOPTS +cookie=$ns5cookie -b 10.53.0.4 +nobadcookie soa . @10.53.0.6 > dig.out.test$n
grep "; COOKIE:.*(good)" dig.out.test$n > /dev/null || ret=1
grep "status: BADCOOKIE," dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "test NS6 cookie on NS4 (expect badcookie) ($n)"
ret=0
$DIG $DIGOPTS +cookie=$ns6cookie -b 10.53.0.4 +nobadcookie soa . @10.53.0.4 > dig.out.test$n
grep "; COOKIE:.*(good)" dig.out.test$n > /dev/null || ret=1
grep "status: BADCOOKIE," dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "test NS6 cookie on NS5 (expect success) ($n)"
ret=0
$DIG $DIGOPTS +cookie=$ns6cookie -b 10.53.0.4 +nobadcookie soa . @10.53.0.5 > dig.out.test$n
grep "; COOKIE:.*(good)" dig.out.test$n > /dev/null || ret=1
grep "status: NOERROR," dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "check that test server is correctly configured ($n)"
ret=0
pat="; COOKIE: ................................ (good)"
#UDP
$DIG $DIGOPTS @10.53.0.9 +notcp tld > dig.out.test$n.1
grep "status: NOERROR" dig.out.test$n.1 > /dev/null || ret=1
grep "$pat" dig.out.test$n.1 > /dev/null || ret=1
grep 'A.10\.53\.0\.9' dig.out.test$n.1 > /dev/null || ret=1
grep 'A.10\.53\.0\.10' dig.out.test$n.1 > /dev/null && ret=1
grep ";; TSIG PSEUDOSECTION:" dig.out.test$n.1 > /dev/null && ret=1

$DIG $DIGOPTS @10.53.0.9 +notcp tcponly.tld > dig.out.test$n.2
grep "status: NOERROR" dig.out.test$n.2 > /dev/null || ret=1
grep "; COOKIE:" dig.out.test$n.2 > /dev/null && ret=1
grep 'A.10\.53\.0\.9' dig.out.test$n.2 > /dev/null || ret=1
grep 'A.10\.53\.0\.10' dig.out.test$n.2 > /dev/null  || ret=1
grep ";; TSIG PSEUDOSECTION:" dig.out.test$n.1 > /dev/null && ret=1

$DIG $DIGOPTS @10.53.0.9 +notcp nocookie.tld > dig.out.test$n.3
grep "status: NOERROR" dig.out.test$n.3 > /dev/null || ret=1
grep "; COOKIE:" dig.out.test$n.3 > /dev/null && ret=1
grep 'A.10\.53\.0\.9' dig.out.test$n.3 > /dev/null || ret=1
grep 'A.10\.53\.0\.10' dig.out.test$n.3 > /dev/null  || ret=1
grep ";; TSIG PSEUDOSECTION:" dig.out.test$n.1 > /dev/null && ret=1

$DIG $DIGOPTS @10.53.0.9 +notcp withtsig.tld > dig.out.test$n.4
grep "status: NOERROR" dig.out.test$n.4 > /dev/null || ret=1
grep "; COOKIE:" dig.out.test$n.4 > /dev/null && ret=1
grep 'A.10\.53\.0\.9' dig.out.test$n.4 > /dev/null || ret=1
grep 'A.10\.53\.0\.10' dig.out.test$n.4 > /dev/null || ret=1
grep ";; TSIG PSEUDOSECTION:" dig.out.test$n.4 > /dev/null || ret=1

#TCP
$DIG $DIGOPTS @10.53.0.9 +tcp tld > dig.out.test$n.5
grep "status: NOERROR" dig.out.test$n.5 > /dev/null || ret=1
grep "$pat" dig.out.test$n.5 > /dev/null || ret=1
grep 'A.10\.53\.0\.9' dig.out.test$n.5 > /dev/null || ret=1
grep 'A.10\.53\.0\.10' dig.out.test$n.5 > /dev/null && ret=1
grep ";; TSIG PSEUDOSECTION:" dig.out.test$n.1 > /dev/null && ret=1

$DIG $DIGOPTS @10.53.0.9 +tcp tcponly.tld > dig.out.test$n.6
grep "status: NOERROR" dig.out.test$n.6 > /dev/null || ret=1
grep "$pat" dig.out.test$n.6 > /dev/null || ret=1
grep 'A.10\.53\.0\.9' dig.out.test$n.6 > /dev/null || ret=1
grep 'A.10\.53\.0\.10' dig.out.test$n.6 > /dev/null && ret=1
grep ";; TSIG PSEUDOSECTION:" dig.out.test$n.1 > /dev/null && ret=1

$DIG $DIGOPTS @10.53.0.9 +tcp nocookie.tld > dig.out.test$n.7
grep "status: NOERROR" dig.out.test$n.7 > /dev/null || ret=1
grep "; COOKIE:" dig.out.test$n.7 > /dev/null && ret=1
grep 'A.10\.53\.0\.9' dig.out.test$n.7 > /dev/null || ret=1
grep 'A.10\.53\.0\.10' dig.out.test$n.7 > /dev/null && ret=1
grep ";; TSIG PSEUDOSECTION:" dig.out.test$n.1 > /dev/null && ret=1

$DIG $DIGOPTS @10.53.0.9 +tcp withtsig.tld > dig.out.test$n.8
grep "status: NOERROR" dig.out.test$n.8 > /dev/null || ret=1
grep "$pat" dig.out.test$n.8 > /dev/null || ret=1
grep 'A.10\.53\.0\.9' dig.out.test$n.8 > /dev/null || ret=1
grep 'A.10\.53\.0\.10' dig.out.test$n.8 > /dev/null && ret=1
grep ";; TSIG PSEUDOSECTION:" dig.out.test$n.8 > /dev/null && ret=1

if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "check that spoofed response is dropped when we have a server cookie ($n)"
ret=0
msg="missing expected cookie from"
pat='10\.53\.0\.9 .*\[cookie=................................\] \[ttl'
# prime EDNS COOKIE state
$DIG $DIGOPTS @10.53.0.1 tld > dig.out.test$n.1
grep "status: NOERROR" dig.out.test$n.1 > /dev/null || ret=1
rndc_dumpdb ns1
grep "$pat" ns1/named_dump.db.test$n > /dev/null || ret=1
# spoofed response contains 10.53.0.10
nextpart ns1/named.run >/dev/null
$DIG $DIGOPTS @10.53.0.1 tcponly.tld > dig.out.test$n.2
wait_for_log 5 "$msg" ns1/named.run || ret=1
grep "status: NOERROR" dig.out.test$n.2 > /dev/null || ret=1
grep 'A.10\.53\.0\.9' dig.out.test$n.2 > /dev/null || ret=1
grep 'A.10\.53\.0\.10' dig.out.test$n.2 > /dev/null && ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "check that gracefully handle server disabling DNS COOKIE we have a server cookie ($n)"
ret=0
msg="missing expected cookie from"
pat='10\.53\.0\.9 .*\[cookie=................................\] \[ttl'
# prime EDNS COOKIE state
$DIG $DIGOPTS @10.53.0.1 tld > dig.out.test$n.1
grep "status: NOERROR" dig.out.test$n.1 > /dev/null || ret=1
rndc_dumpdb ns1
grep "$pat" ns1/named_dump.db.test$n > /dev/null || ret=1
# check the disabled server response
nextpart ns1/named.run >/dev/null
$DIG $DIGOPTS @10.53.0.1 nocookie.tld > dig.out.test$n.2
wait_for_log 5 "$msg" ns1/named.run || ret=1
grep "status: NOERROR" dig.out.test$n.2 > /dev/null || ret=1
grep 'A.10\.53\.0\.9' dig.out.test$n.2 > /dev/null || ret=1
grep 'A.10\.53\.0\.10' dig.out.test$n.2 > /dev/null && ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

n=`expr $n + 1`
echo_i "check that spoofed response with a TSIG is dropped when we have a server cookie ($n)"
ret=0
pat='10\.53\.0\.9 .*\[cookie=................................\] \[ttl'
# prime EDNS COOKIE state
$DIG $DIGOPTS @10.53.0.1 tld > dig.out.test$n.1
grep "status: NOERROR" dig.out.test$n.1 > /dev/null || ret=1
rndc_dumpdb ns1
grep "$pat" ns1/named_dump.db.test$n > /dev/null || ret=1
# spoofed response contains 10.53.0.10
nextpart ns1/named.run >/dev/null
$DIG $DIGOPTS @10.53.0.1 withtsig.tld > dig.out.test$n.2
grep "status: NOERROR" dig.out.test$n.2 > /dev/null || ret=1
grep 'A.10\.53\.0\.9' dig.out.test$n.2 > /dev/null || ret=1
grep 'A.10\.53\.0\.10' dig.out.test$n.2 > /dev/null && ret=1
nextpart ns1/named.run > named.run.test$n
count=$(grep -c ') [0-9][0-9]* NOERROR 0' named.run.test$n)
test $count -eq 1 || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

if $PYTHON -c '
import dns.version, sys;
if dns.version.MAJOR > 1: sys.exit(0);
if dns.version.MAJOR == 1 and dns.version.MINOR >= 16: sys.exit(0);
sys.exit(1)'
then
  n=`expr $n + 1`
  echo_i "check that TSIG test server is correctly configured ($n)"
  ret=0
  pat="; COOKIE: ................................ (good)"
  key=hmac-sha256:foo:aaaaaaaaaaaa
  #UDP
  $DIG $DIGOPTS @10.53.0.10 -y $key +notcp tsig. > dig.out.test$n.1
  grep "status: NOERROR" dig.out.test$n.1 > /dev/null || ret=1
  grep "$pat" dig.out.test$n.1 > /dev/null || ret=1
  grep 'A.10\.53\.0\.9' dig.out.test$n.1 > /dev/null || ret=1
  grep 'A.10\.53\.0\.10' dig.out.test$n.1 > /dev/null && ret=1
  grep 'TSIG.*NOERROR' dig.out.test$n.1 > /dev/null || ret=1

  $DIG $DIGOPTS @10.53.0.10 -y $key +notcp tcponly.tsig > dig.out.test$n.2
  grep "status: NOERROR" dig.out.test$n.2 > /dev/null || ret=1
  grep "; COOKIE:" dig.out.test$n.2 > /dev/null && ret=1
  grep 'A.10\.53\.0\.9' dig.out.test$n.2 > /dev/null || ret=1
  grep 'A.10\.53\.0\.10' dig.out.test$n.2 > /dev/null  || ret=1
  grep 'TSIG.*NOERROR' dig.out.test$n.1 > /dev/null || ret=1

  $DIG $DIGOPTS @10.53.0.10 -y $key +notcp nocookie.tsig > dig.out.test$n.3
  grep "status: NOERROR" dig.out.test$n.3 > /dev/null || ret=1
  grep "; COOKIE:" dig.out.test$n.3 > /dev/null && ret=1
  grep 'A.10\.53\.0\.9' dig.out.test$n.3 > /dev/null || ret=1
  grep 'A.10\.53\.0\.10' dig.out.test$n.3 > /dev/null  || ret=1
  grep 'TSIG.*NOERROR' dig.out.test$n.1 > /dev/null || ret=1

  #TCP
  $DIG $DIGOPTS @10.53.0.10 -y $key +tcp tsig. > dig.out.test$n.5
  grep "status: NOERROR" dig.out.test$n.5 > /dev/null || ret=1
  grep "$pat" dig.out.test$n.5 > /dev/null || ret=1
  grep 'A.10\.53\.0\.9' dig.out.test$n.5 > /dev/null || ret=1
  grep 'A.10\.53\.0\.10' dig.out.test$n.5 > /dev/null && ret=1
  grep 'TSIG.*NOERROR' dig.out.test$n.1 > /dev/null || ret=1

  $DIG $DIGOPTS @10.53.0.10 -y $key +tcp tcponly.tsig > dig.out.test$n.6
  grep "status: NOERROR" dig.out.test$n.6 > /dev/null || ret=1
  grep "$pat" dig.out.test$n.6 > /dev/null || ret=1
  grep 'A.10\.53\.0\.9' dig.out.test$n.6 > /dev/null || ret=1
  grep 'A.10\.53\.0\.10' dig.out.test$n.6 > /dev/null && ret=1
  grep 'TSIG.*NOERROR' dig.out.test$n.1 > /dev/null || ret=1

  $DIG $DIGOPTS @10.53.0.10 -y $key +tcp nocookie.tsig > dig.out.test$n.7
  grep "status: NOERROR" dig.out.test$n.7 > /dev/null || ret=1
  grep "; COOKIE:" dig.out.test$n.7 > /dev/null && ret=1
  grep 'A.10\.53\.0\.9' dig.out.test$n.7 > /dev/null || ret=1
  grep 'A.10\.53\.0\.10' dig.out.test$n.7 > /dev/null && ret=1
  grep 'TSIG.*NOERROR' dig.out.test$n.1 > /dev/null || ret=1

  if [ $ret != 0 ]; then echo_i "failed"; fi
  status=`expr $status + $ret`

  n=`expr $n + 1`
  echo_i "check that missing COOKIE with a valid TSIG signed response does not trigger TCP fallback ($n)"
  ret=0
  pat='10\.53\.0\.10 .*\[cookie=................................\] \[ttl'
  # prime EDNS COOKIE state
  $DIG $DIGOPTS @10.53.0.1 tsig. > dig.out.test$n.1
  grep "status: NOERROR" dig.out.test$n.1 > /dev/null || ret=1
  rndc_dumpdb ns1
  grep "$pat" ns1/named_dump.db.test$n > /dev/null || ret=1
  # check the disabled server response
  nextpart ns1/named.run >/dev/null
  $DIG $DIGOPTS @10.53.0.1 nocookie.tsig > dig.out.test$n.2
  grep "status: NOERROR" dig.out.test$n.2 > /dev/null || ret=1
  grep 'A.10\.53\.0\.9' dig.out.test$n.2 > /dev/null || ret=1
  grep 'A.10\.53\.0\.10' dig.out.test$n.2 > /dev/null || ret=1
  nextpart ns1/named.run > named.run.test$n
  count=$(grep -c ') [0-9][0-9]* NOERROR 0' named.run.test$n)
  test $count -eq 2 || ret=1
  if [ $ret != 0 ]; then echo_i "failed"; fi
  status=`expr $status + $ret`
fi

echo_i "exit status: $status"
[ $status -eq 0 ] || exit 1