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bind9/bin/tests/system/dnssec/ns2/sign.sh
Matthijs Mekking 8bc10bcf59 Add test for ZSK rollover while KSK offline 
This commit adds a lengthy test where the ZSK is rolled but the
KSK is offline (except for when the DNSKEY RRset is changed).  The
specific scenario has the `dnskey-kskonly` configuration option set
meaning the DNSKEY RRset should only be signed with the KSK.

A new zone `updatecheck-kskonly.secure` is added to test against,
that can be dynamically updated, and that can be controlled with rndc
to load the DNSSEC keys.

There are some pre-checks for this test to make sure everything is
fine before the ZSK roll, after the new ZSK is published, and after
the old ZSK is deleted.  Note there are actually two ZSK rolls in
quick succession.

When the latest added ZSK becomes active and its predecessor becomes
inactive, the KSK is offline.  However, the DNSKEY RRset did not
change and it has a good signature that is valid for long enough.
The expected behavior is that the DNSKEY RRset stays signed with
the KSK only (signature does not need to change).  However, the
test will fail because after reconfiguring the keys for the zone,
it wants to add re-sign tasks for the new active keys (in sign_apex).
Because the KSK is offline, named determines that the only other
active key, the latest ZSK, will be used to resign the DNSKEY RRset,
in addition to keeping the RRSIG of the KSK.

The question is: Why do we need to resign the DNSKEY RRset
immediately when a new key becomes active?  This is not required,
only once the next resign task is triggered the new active key
should replace signatures that are in need of refreshing.
2019-04-11 15:22:30 +02:00

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#!/bin/sh -e
#
# 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.
# shellcheck source=conf.sh
. "$SYSTEMTESTTOP/conf.sh"
set -e
# Sign child zones (served by ns3).
( cd ../ns3 && $SHELL sign.sh )
echo_i "ns2/sign.sh"
# Get the DS records for the "trusted." and "managed." zones.
for subdomain in secure unsupported disabled enabled
do
cp "../ns3/dsset-$subdomain.managed$TP" .
cp "../ns3/dsset-$subdomain.trusted$TP" .
done
# Sign the "trusted." and "managed." zones.
zone=managed.
infile=key.db.in
zonefile=managed.db
keyname1=$("$KEYGEN" -q -a "$ALTERNATIVE_ALGORITHM" -b "$ALTERNATIVE_BITS" -n zone -f KSK "$zone")
keyname2=$("$KEYGEN" -q -a "$ALTERNATIVE_ALGORITHM" -b "$ALTERNATIVE_BITS" -n zone "$zone")
cat "$infile" "$keyname1.key" "$keyname2.key" > "$zonefile"
"$SIGNER" -P -g -o "$zone" -k "$keyname1" "$zonefile" "$keyname2" > /dev/null 2>&1
zone=trusted.
infile=key.db.in
zonefile=trusted.db
keyname1=$("$KEYGEN" -q -a "$ALTERNATIVE_ALGORITHM" -b "$ALTERNATIVE_BITS" -n zone -f KSK "$zone")
keyname2=$("$KEYGEN" -q -a "$ALTERNATIVE_ALGORITHM" -b "$ALTERNATIVE_BITS" -n zone "$zone")
cat "$infile" "$keyname1.key" "$keyname2.key" > "$zonefile"
"$SIGNER" -P -g -o "$zone" -k "$keyname1" "$zonefile" "$keyname2" > /dev/null 2>&1
# The "example." zone.
zone=example.
infile=example.db.in
zonefile=example.db
# Get the DS records for the "example." zone.
for subdomain in secure badds bogus dynamic keyless nsec3 optout \
nsec3-unknown optout-unknown multiple rsasha256 rsasha512 \
kskonly update-nsec3 auto-nsec auto-nsec3 secure.below-cname \
ttlpatch split-dnssec split-smart expired expiring upper lower \
dnskey-unknown dnskey-unsupported dnskey-unsupported-2 \
dnskey-nsec3-unknown managed-future revkey \
dname-at-apex-nsec3 occluded
do
cp "../ns3/dsset-$subdomain.example$TP" .
done
# Sign the "example." zone.
keyname1=$("$KEYGEN" -q -a "$ALTERNATIVE_ALGORITHM" -b "$ALTERNATIVE_BITS" -n zone -f KSK "$zone")
keyname2=$("$KEYGEN" -q -a "$ALTERNATIVE_ALGORITHM" -b "$ALTERNATIVE_BITS" -n zone "$zone")
cat "$infile" "$keyname1.key" "$keyname2.key" > "$zonefile"
"$SIGNER" -P -g -o "$zone" -k "$keyname1" "$zonefile" "$keyname2" > /dev/null 2>&1
#
# lower/uppercase the signature bits with the exception of the last characters
# changing the last 4 characters will lead to a bad base64 encoding.
#
zonefiletmp=$(mktemp "$zonefile.XXXXXX") || exit 1
"$CHECKZONE" -D -q -i local "$zone" "$zonefile.signed" |
tr -d '\r' |
awk '
tolower($1) == "bad-cname.example." && $4 == "RRSIG" && $5 == "CNAME" {
for (i = 1; i <= NF; i++ ) {
if (i <= 12) {
printf("%s ", $i);
continue;
}
prefix = substr($i, 1, length($i) - 4);
suffix = substr($i, length($i) - 4, 4);
if (i > 12 && tolower(prefix) != prefix)
printf("%s%s", tolower(prefix), suffix);
else if (i > 12 && toupper(prefix) != prefix)
printf("%s%s", toupper(prefix), suffix);
else
printf("%s%s ", prefix, suffix);
}
printf("\n");
next;
}
tolower($1) == "bad-dname.example." && $4 == "RRSIG" && $5 == "DNAME" {
for (i = 1; i <= NF; i++ ) {
if (i <= 12) {
printf("%s ", $i);
continue;
}
prefix = substr($i, 1, length($i) - 4);
suffix = substr($i, length($i) - 4, 4);
if (i > 12 && tolower(prefix) != prefix)
printf("%s%s", tolower(prefix), suffix);
else if (i > 12 && toupper(prefix) != prefix)
printf("%s%s", toupper(prefix), suffix);
else
printf("%s%s ", prefix, suffix);
}
printf("\n");
next;
}
{ print; }' > "$zonefiletmp" && mv "$zonefiletmp" "$zonefile.signed"
#
# signed in-addr.arpa w/ a delegation for 10.in-addr.arpa which is unsigned.
#
zone=in-addr.arpa.
infile=in-addr.arpa.db.in
zonefile=in-addr.arpa.db
keyname1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
keyname2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
cat "$infile" "$keyname1.key" "$keyname2.key" > "$zonefile"
"$SIGNER" -P -g -o "$zone" -k "$keyname1" "$zonefile" "$keyname2" > /dev/null 2>&1
# Sign the privately secure file
privzone=private.secure.example.
privinfile=private.secure.example.db.in
privzonefile=private.secure.example.db
privkeyname=$("$KEYGEN" -q -a "${DEFAULT_ALGORITHM}" -b "${DEFAULT_BITS}" -n zone "$privzone")
cat "$privinfile" "$privkeyname.key" > "$privzonefile"
"$SIGNER" -P -g -o "$privzone" -l dlv "$privzonefile" > /dev/null 2>&1
# Sign the DLV secure zone.
dlvzone=dlv.
dlvinfile=dlv.db.in
dlvzonefile=dlv.db
dlvsetfile="dlvset-$(echo "$privzone" |sed -e "s/\\.$//g")$TP"
dlvkeyname=$("$KEYGEN" -q -a "${DEFAULT_ALGORITHM}" -b "${DEFAULT_BITS}" -n zone "$dlvzone")
cat "$dlvinfile" "$dlvkeyname.key" "$dlvsetfile" > "$dlvzonefile"
"$SIGNER" -P -g -o "$dlvzone" "$dlvzonefile" > /dev/null 2>&1
# Sign the badparam secure file
zone=badparam.
infile=badparam.db.in
zonefile=badparam.db
keyname1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
keyname2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
cat "$infile" "$keyname1.key" "$keyname2.key" > "$zonefile"
"$SIGNER" -P -3 - -H 1 -g -o "$zone" -k "$keyname1" "$zonefile" "$keyname2" > /dev/null 2>&1
sed -e 's/IN NSEC3 1 0 1 /IN NSEC3 1 0 10 /' "$zonefile.signed" > "$zonefile.bad"
# Sign the single-nsec3 secure zone with optout
zone=single-nsec3.
infile=single-nsec3.db.in
zonefile=single-nsec3.db
keyname1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
keyname2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
cat "$infile" "$keyname1.key" "$keyname2.key" > "$zonefile"
"$SIGNER" -P -3 - -A -H 1 -g -o "$zone" -k "$keyname1" "$zonefile" "$keyname2" > /dev/null 2>&1
#
# algroll has just has the old DNSKEY records removed and is waiting
# for them to be flushed from caches. We still need to generate
# RRSIGs for the old DNSKEY.
#
zone=algroll.
infile=algroll.db.in
zonefile=algroll.db
keyold1=$("$KEYGEN" -q -a "$ALTERNATIVE_ALGORITHM" -b "$ALTERNATIVE_BITS" -n zone -f KSK "$zone")
keyold2=$("$KEYGEN" -q -a "$ALTERNATIVE_ALGORITHM" -b "$ALTERNATIVE_BITS" -n zone "$zone")
keynew1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
keynew2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
cat "$infile" "$keynew1.key" "$keynew2.key" > "$zonefile"
"$SIGNER" -P -o "$zone" -k "$keyold1" -k "$keynew1" "$zonefile" "$keyold1" "$keyold2" "$keynew1" "$keynew2" > /dev/null 2>&1
#
# Make a zone big enough that it takes several seconds to generate a new
# nsec3 chain.
#
zone=nsec3chain-test
zonefile=nsec3chain-test.db
cat > "$zonefile" << EOF
\$TTL 10
@ 10 SOA ns2 hostmaster 0 3600 1200 864000 1200
@ 10 NS ns2
@ 10 NS ns3
ns2 10 A 10.53.0.2
ns3 10 A 10.53.0.3
EOF
for i in $(seq 300); do
echo "host$i 10 IN NS ns.elsewhere"
done >> "$zonefile"
key1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
cat "$key1.key" "$key2.key" >> "$zonefile"
"$SIGNER" -P -3 - -A -H 1 -g -o "$zone" -k "$key1" "$zonefile" "$key2" > /dev/null 2>&1
zone=cds.secure
infile=cds.secure.db.in
zonefile=cds.secure.db
key1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
"$DSFROMKEY" -C "$key1.key" > "$key1.cds"
cat "$infile" "$key1.key" "$key2.key" "$key1.cds" >$zonefile
"$SIGNER" -P -g -o "$zone" "$zonefile" > /dev/null 2>&1
zone=cds-x.secure
infile=cds.secure.db.in
zonefile=cds-x.secure.db
key1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key3=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
"$DSFROMKEY" -C "$key2.key" > "$key2.cds"
cat "$infile" "$key1.key" "$key3.key" "$key2.cds" > "$zonefile"
"$SIGNER" -P -g -x -o "$zone" "$zonefile" > /dev/null 2>&1
zone=cds-update.secure
infile=cds-update.secure.db.in
zonefile=cds-update.secure.db
key1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
cat "$infile" "$key1.key" "$key2.key" > "$zonefile"
"$SIGNER" -P -g -o "$zone" "$zonefile" > /dev/null 2>&1
zone=cds-kskonly.secure
infile=cds-kskonly.secure.db.in
zonefile=cds-kskonly.secure.db
key1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
cat "$infile" "$key1.key" "$key2.key" > "$zonefile"
"$SIGNER" -P -g -o "$zone" "$zonefile" > /dev/null 2>&1
zone=cds-auto.secure
infile=cds-auto.secure.db.in
zonefile=cds-auto.secure.db
key1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
"$DSFROMKEY" -C "$key1.key" > "$key1.cds"
cat "$infile" "$key1.cds" > "$zonefile.signed"
zone=cdnskey.secure
infile=cdnskey.secure.db.in
zonefile=cdnskey.secure.db
key1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
sed 's/DNSKEY/CDNSKEY/' "$key1.key" > "$key1.cds"
cat "$infile" "$key1.key" "$key2.key" "$key1.cds" > "$zonefile"
"$SIGNER" -P -g -o "$zone" "$zonefile" > /dev/null 2>&1
zone=cdnskey-x.secure
infile=cdnskey.secure.db.in
zonefile=cdnskey-x.secure.db
key1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key3=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
sed 's/DNSKEY/CDNSKEY/' "$key1.key" > "$key1.cds"
cat "$infile" "$key2.key" "$key3.key" "$key1.cds" > "$zonefile"
"$SIGNER" -P -g -x -o "$zone" "$zonefile" > /dev/null 2>&1
zone=cdnskey-update.secure
infile=cdnskey-update.secure.db.in
zonefile=cdnskey-update.secure.db
key1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
cat "$infile" "$key1.key" "$key2.key" > "$zonefile"
"$SIGNER" -P -g -o "$zone" "$zonefile" > /dev/null 2>&1
zone=cdnskey-kskonly.secure
infile=cdnskey-kskonly.secure.db.in
zonefile=cdnskey-kskonly.secure.db
key1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
cat "$infile" "$key1.key" "$key2.key" > "$zonefile"
"$SIGNER" -P -g -o "$zone" "$zonefile" > /dev/null 2>&1
zone=cdnskey-auto.secure
infile=cdnskey-auto.secure.db.in
zonefile=cdnskey-auto.secure.db
key1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
sed 's/DNSKEY/CDNSKEY/' "$key1.key" > "$key1.cds"
cat "$infile" "$key1.cds" > "$zonefile.signed"
zone=updatecheck-kskonly.secure
infile=template.secure.db.in
zonefile=${zone}.db
key1=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone -f KSK "$zone")
key2=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone")
# Save key id's for checking active key usage
echo "$key1" | sed -e 's/.*[+]//' -e 's/^0*//' > $zone.ksk.id
echo "$key2" | sed -e 's/.*[+]//' -e 's/^0*//' > $zone.zsk.id
echo "${key1}" > $zone.ksk.key
echo "${key2}" > $zone.zsk.key
# Add CDS and CDNSKEY records
sed 's/DNSKEY/CDNSKEY/' "$key1.key" > "$key1.cdnskey"
"$DSFROMKEY" -C "$key1.key" > "$key1.cds"
cat "$infile" "$key1.key" "$key2.key" "$key1.cdnskey" "$key1.cds" > "$zonefile"
# Don't sign, let auto-dnssec maintain do it.
mv $zonefile "$zonefile.signed"
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