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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:59:48 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:59:48 +0000 |
commit | 3b9b6d0b8e7f798023c9d109c490449d528fde80 (patch) | |
tree | 2e1c188dd7b8d7475cd163de9ae02c428343669b /bin/tests/system/nsec3/tests.sh | |
parent | Initial commit. (diff) | |
download | bind9-0cd617f6bad00b68e380aeb0024ef4dc1985191c.tar.xz bind9-0cd617f6bad00b68e380aeb0024ef4dc1985191c.zip |
Adding upstream version 1:9.18.19.upstream/1%9.18.19upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | bin/tests/system/nsec3/tests.sh | 553 |
1 files changed, 553 insertions, 0 deletions
diff --git a/bin/tests/system/nsec3/tests.sh b/bin/tests/system/nsec3/tests.sh new file mode 100644 index 0000000..117bf63 --- /dev/null +++ b/bin/tests/system/nsec3/tests.sh @@ -0,0 +1,553 @@ +#!/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. + +set -e + +# shellcheck source=conf.sh +. ../conf.sh +# shellcheck source=kasp.sh +. ../kasp.sh + +# Log errors and increment $ret. +log_error() { + echo_i "error: $1" + ret=$((ret+1)) +} + +# Call dig with default options. +dig_with_opts() { + $DIG +tcp +noadd +nosea +nostat +nocmd +dnssec -p "$PORT" "$@" +} + +# Call rndc. +rndccmd() { + "$RNDC" -c ../common/rndc.conf -p "$CONTROLPORT" -s "$@" +} + +# Set zone name ($1) and policy ($2) for testing nsec3. +set_zone_policy() { + ZONE=$1 + POLICY=$2 + NUM_KEYS=$3 + DNSKEY_TTL=$4 +} +# Set expected NSEC3 parameters: flags ($1), iterations ($2), and +# salt length ($3). +set_nsec3param() { + FLAGS=$1 + ITERATIONS=$2 + SALTLEN=$3 + # Reset salt. + SALT="" +} + +# Set expected default dnssec-policy keys values. +set_key_default_values() { + key_clear $1 + + set_keyrole $1 "csk" + set_keylifetime $1 "0" + set_keyalgorithm $1 "13" "ECDSAP256SHA256" "256" + set_keysigning $1 "yes" + set_zonesigning $1 "yes" + + set_keystate $1 "GOAL" "omnipresent" + set_keystate $1 "STATE_DNSKEY" "rumoured" + set_keystate $1 "STATE_KRRSIG" "rumoured" + set_keystate $1 "STATE_ZRRSIG" "rumoured" + set_keystate $1 "STATE_DS" "hidden" +} + +# Set expected rsasha1 dnssec-policy keys values. +set_key_rsasha1_values() { + key_clear $1 + + set_keyrole $1 "csk" + set_keylifetime $1 "0" + set_keyalgorithm $1 "5" "RSASHA1" "2048" + set_keysigning $1 "yes" + set_zonesigning $1 "yes" + + set_keystate $1 "GOAL" "omnipresent" + set_keystate $1 "STATE_DNSKEY" "rumoured" + set_keystate $1 "STATE_KRRSIG" "rumoured" + set_keystate $1 "STATE_ZRRSIG" "rumoured" + set_keystate $1 "STATE_DS" "hidden" +} + +# Update the key states. +set_key_states() { + set_keystate $1 "GOAL" "$2" + set_keystate $1 "STATE_DNSKEY" "$3" + set_keystate $1 "STATE_KRRSIG" "$4" + set_keystate $1 "STATE_ZRRSIG" "$5" + set_keystate $1 "STATE_DS" "$6" +} + +# The apex NSEC3PARAM record indicates that it is signed. +_wait_for_nsec3param() { + dig_with_opts +noquestion "@${SERVER}" "$ZONE" NSEC3PARAM > "dig.out.test$n.wait" || return 1 + grep "${ZONE}\..*IN.*NSEC3PARAM.*1.*0.*${ITERATIONS}.*${SALT}" "dig.out.test$n.wait" > /dev/null || return 1 + grep "${ZONE}\..*IN.*RRSIG" "dig.out.test$n.wait" > /dev/null || return 1 + return 0 +} +# The apex NSEC record indicates that it is signed. +_wait_for_nsec() { + dig_with_opts +noquestion "@${SERVER}" "$ZONE" NSEC > "dig.out.test$n.wait" || return 1 + grep "NS SOA" "dig.out.test$n.wait" > /dev/null || return 1 + grep "${ZONE}\..*IN.*RRSIG" "dig.out.test$n.wait" > /dev/null || return 1 + grep "${ZONE}\..*IN.*NSEC3PARAM" "dig.out.test$n.wait" > /dev/null && return 1 + return 0 +} + +# Wait for the zone to be signed. +wait_for_zone_is_signed() { + n=$((n+1)) + ret=0 + echo_i "wait for ${ZONE} to be signed with $1 ($n)" + + if [ "$1" = "nsec3" ]; then + retry_quiet 10 _wait_for_nsec3param || log_error "wait for ${ZONE} to be signed failed" + else + retry_quiet 10 _wait_for_nsec || log_error "wait for ${ZONE} to be signed failed" + fi + + test "$ret" -eq 0 || echo_i "failed" + status=$((status+ret)) +} + +# Test: check DNSSEC verify +_check_dnssec_verify() { + dig_with_opts @$SERVER "${ZONE}" AXFR > "dig.out.test$n.axfr.$ZONE" || return 1 + $VERIFY -z -o "$ZONE" "dig.out.test$n.axfr.$ZONE" > "verify.out.test$n.$ZONE" 2>&1 || return 1 + return 0 +} + +# Test: check NSEC in answers +_check_nsec_nsec3param() { + dig_with_opts +noquestion @$SERVER "${ZONE}" NSEC3PARAM > "dig.out.test$n.nsec3param.$ZONE" || return 1 + grep "NSEC3PARAM" "dig.out.test$n.nsec3param.$ZONE" > /dev/null && return 1 + return 0 +} + +_check_nsec_nxdomain() { + dig_with_opts @$SERVER "nosuchname.${ZONE}" > "dig.out.test$n.nxdomain.$ZONE" || return 1 + grep "${ZONE}.*IN.*NSEC.*NS.*SOA.*RRSIG.*NSEC.*DNSKEY" "dig.out.test$n.nxdomain.$ZONE" > /dev/null || return 1 + grep "NSEC3" "dig.out.test$n.nxdomain.$ZONE" > /dev/null && return 1 + return 0 +} + +check_nsec() { + wait_for_zone_is_signed "nsec" + + n=$((n+1)) + echo_i "check DNSKEY rrset is signed correctly for zone ${ZONE} ($n)" + ret=0 + check_keys + retry_quiet 10 _check_apex_dnskey || log_error "bad DNSKEY RRset for zone ${ZONE}" + test "$ret" -eq 0 || echo_i "failed" + status=$((status+ret)) + + n=$((n+1)) + echo_i "verify DNSSEC for zone ${ZONE} ($n)" + ret=0 + retry_quiet 10 _check_dnssec_verify || log_error "DNSSEC verify failed for zone ${ZONE}" + test "$ret" -eq 0 || echo_i "failed" + status=$((status+ret)) + + n=$((n+1)) + echo_i "check NSEC3PARAM response for zone ${ZONE} ($n)" + ret=0 + retry_quiet 10 _check_nsec_nsec3param || log_error "unexpected NSEC3PARAM in response for zone ${ZONE}" + test "$ret" -eq 0 || echo_i "failed" + status=$((status+ret)) + + n=$((n+1)) + echo_i "check NXDOMAIN response for zone ${ZONE} ($n)" + ret=0 + retry_quiet 10 _check_nsec_nxdomain || log_error "bad NXDOMAIN response for zone ${ZONE}" + test "$ret" -eq 0 || echo_i "failed" + status=$((status+ret)) +} + +# Test: check NSEC3 parameters in answers +_check_nsec3_nsec3param() { + dig_with_opts +noquestion @$SERVER "${ZONE}" NSEC3PARAM > "dig.out.test$n.nsec3param.$ZONE" || return 1 + grep "${ZONE}.*0.*IN.*NSEC3PARAM.*1.*0.*${ITERATIONS}.*${SALT}" "dig.out.test$n.nsec3param.$ZONE" > /dev/null || return 1 + + if [ -z "$SALT" ]; then + SALT=$(awk '$4 == "NSEC3PARAM" { print $8 }' dig.out.test$n.nsec3param.$ZONE) + fi + return 0 +} + +_check_nsec3_nxdomain() { + dig_with_opts @$SERVER "nosuchname.${ZONE}" > "dig.out.test$n.nxdomain.$ZONE" || return 1 + grep ".*\.${ZONE}.*IN.*NSEC3.*1.${FLAGS}.*${ITERATIONS}.*${SALT}" "dig.out.test$n.nxdomain.$ZONE" > /dev/null || return 1 + return 0 +} + +check_nsec3() { + wait_for_zone_is_signed "nsec3" + + n=$((n+1)) + echo_i "check that NSEC3PARAM 1 0 ${ITERATIONS} is published zone ${ZONE} ($n)" + ret=0 + retry_quiet 10 _check_nsec3_nsec3param || log_error "bad NSEC3PARAM response for ${ZONE}" + test "$ret" -eq 0 || echo_i "failed" + status=$((status+ret)) + + n=$((n+1)) + echo_i "check NXDOMAIN response has correct NSEC3 1 ${FLAGS} ${ITERATIONS} ${SALT} for zone ${ZONE} ($n)" + ret=0 + retry_quiet 10 _check_nsec3_nxdomain || log_error "bad NXDOMAIN response for zone ${ZONE}" + test "$ret" -eq 0 || echo_i "failed" + status=$((status+ret)) + + n=$((n+1)) + echo_i "verify DNSSEC for zone ${ZONE} ($n)" + ret=0 + retry_quiet 10 _check_dnssec_verify || log_error "DNSSEC verify failed for zone ${ZONE}" + test "$ret" -eq 0 || echo_i "failed" + status=$((status+ret)) +} + +start_time="$(TZ=UTC date +%s)" +status=0 +n=0 + +key_clear "KEY1" +key_clear "KEY2" +key_clear "KEY3" +key_clear "KEY4" + +# Zone: nsec-to-nsec3.kasp. +set_zone_policy "nsec-to-nsec3.kasp" "nsec" 1 3600 +set_server "ns3" "10.53.0.3" +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec + +if ($SHELL ../testcrypto.sh -q RSASHA1) +then + # Zone: rsasha1-to-nsec3.kasp. + set_zone_policy "rsasha1-to-nsec3.kasp" "rsasha1" 1 3600 + set_server "ns3" "10.53.0.3" + set_key_rsasha1_values "KEY1" + echo_i "initial check zone ${ZONE}" + check_nsec + + # Zone: rsasha1-to-nsec3-wait.kasp. + set_zone_policy "rsasha1-to-nsec3-wait.kasp" "rsasha1" 1 3600 + set_server "ns3" "10.53.0.3" + set_key_rsasha1_values "KEY1" + set_key_states "KEY1" "omnipresent" "omnipresent" "omnipresent" "omnipresent" "omnipresent" + echo_i "initial check zone ${ZONE}" + check_nsec + + # Zone: nsec3-to-rsasha1.kasp. + set_zone_policy "nsec3-to-rsasha1.kasp" "nsec3" 1 3600 + set_server "ns3" "10.53.0.3" + set_key_rsasha1_values "KEY1" + echo_i "initial check zone ${ZONE}" + check_nsec3 + + # Zone: nsec3-to-rsasha1-ds.kasp. + set_zone_policy "nsec3-to-rsasha1-ds.kasp" "nsec3" 1 3600 + set_server "ns3" "10.53.0.3" + set_key_rsasha1_values "KEY1" + set_key_states "KEY1" "omnipresent" "omnipresent" "omnipresent" "omnipresent" "omnipresent" + echo_i "initial check zone ${ZONE}" + check_nsec3 +fi + +# Zone: nsec3.kasp. +set_zone_policy "nsec3.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec3 + +# Zone: nsec3-dynamic.kasp. +set_zone_policy "nsec3-dynamic.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec3 + +# Zone: nsec3-change.kasp. +set_zone_policy "nsec3-change.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec3 + +# Zone: nsec3-dynamic-change.kasp. +set_zone_policy "nsec3-dynamic-change.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec3 + +# Zone: nsec3-dynamic-to-inline.kasp. +set_zone_policy "nsec3-dynamic-to-inline.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec3 + +# Zone: nsec3-inline-to-dynamic.kasp. +set_zone_policy "nsec3-inline-to-dynamic.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec3 + +# Zone: nsec3-to-nsec.kasp. +set_zone_policy "nsec3-to-nsec.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec3 + +# Zone: nsec3-to-optout.kasp. +set_zone_policy "nsec3-to-optout.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec3 + +# Zone: nsec3-from-optout.kasp. +set_zone_policy "nsec3-from-optout.kasp" "optout" 1 3600 +set_nsec3param "1" "0" "0" +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec3 + +# Zone: nsec3-other.kasp. +set_zone_policy "nsec3-other.kasp" "nsec3-other" 1 3600 +set_nsec3param "1" "11" "8" +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec3 + +# Zone: nsec3-xfr-inline.kasp. +# This is a secondary zone, where the primary is signed with NSEC3 but +# the dnssec-policy dictates NSEC. +set_zone_policy "nsec3-xfr-inline.kasp" "nsec" 1 3600 +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec + +# Zone: nsec3-dynamic-update-inline.kasp. +set_zone_policy "nsec3-dynamic-update-inline.kasp" "nsec" 1 3600 +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec + +n=$((n+1)) +echo_i "dynamic update dnssec-policy zone ${ZONE} with NSEC3 ($n)" +ret=0 +$NSUPDATE > update.out.$ZONE.test$n 2>&1 << END || ret=1 +server 10.53.0.3 ${PORT} +zone ${ZONE}. +update add 04O18462RI5903H8RDVL0QDT5B528DUJ.${ZONE}. 3600 NSEC3 0 0 0 408A4B2D412A4E95 1JMDDPMTFF8QQLIOINSIG4CR9OTICAOC A RRSIG +send +END +wait_for_log 10 "updating zone '${ZONE}/IN': update failed: explicit NSEC3 updates are not allowed in secure zones (REFUSED)" ns3/named.run || ret=1 +check_nsec + +# Reconfig named. +ret=0 +echo_i "reconfig dnssec-policy to trigger nsec3 rollovers" +copy_setports ns3/named2.conf.in ns3/named.conf +rndc_reconfig ns3 10.53.0.3 + +# Zone: nsec-to-nsec3.kasp. (reconfigured) +set_zone_policy "nsec-to-nsec3.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "check zone ${ZONE} after reconfig" +check_nsec3 + +if ($SHELL ../testcrypto.sh -q RSASHA1) +then + # Zone: rsasha1-to-nsec3.kasp. + set_zone_policy "rsasha1-to-nsec3.kasp" "nsec3" 2 3600 + set_server "ns3" "10.53.0.3" + set_key_rsasha1_values "KEY1" + set_key_states "KEY1" "hidden" "unretentive" "unretentive" "unretentive" "hidden" + set_keysigning "KEY1" "no" + set_zonesigning "KEY1" "no" + set_key_default_values "KEY2" + echo_i "check zone ${ZONE} after reconfig" + check_nsec3 + + # Zone: rsasha1-to-nsec3-wait.kasp. + set_zone_policy "rsasha1-to-nsec3-wait.kasp" "nsec3" 2 3600 + set_server "ns3" "10.53.0.3" + set_key_rsasha1_values "KEY1" + set_key_states "KEY1" "hidden" "omnipresent" "omnipresent" "omnipresent" "omnipresent" + set_key_default_values "KEY2" + echo_i "check zone ${ZONE} after reconfig" + check_nsec + + # Zone: nsec3-to-rsasha1.kasp. + set_zone_policy "nsec3-to-rsasha1.kasp" "rsasha1" 2 3600 + set_nsec3param "1" "0" "0" + set_server "ns3" "10.53.0.3" + set_key_default_values "KEY1" + set_key_states "KEY1" "hidden" "unretentive" "unretentive" "unretentive" "hidden" + set_keysigning "KEY1" "no" + set_zonesigning "KEY1" "no" + set_key_rsasha1_values "KEY2" + echo_i "check zone ${ZONE} after reconfig" + check_nsec + + # Zone: nsec3-to-rsasha1-ds.kasp. + set_zone_policy "nsec3-to-rsasha1-ds.kasp" "rsasha1" 2 3600 + set_nsec3param "1" "0" "0" + set_server "ns3" "10.53.0.3" + set_key_default_values "KEY1" + set_key_states "KEY1" "hidden" "omnipresent" "omnipresent" "omnipresent" "omnipresent" + set_key_rsasha1_values "KEY2" + echo_i "check zone ${ZONE} after reconfig" + check_nsec + + key_clear "KEY1" + key_clear "KEY2" +fi + +# Zone: nsec3.kasp. (same) +set_zone_policy "nsec3.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "check zone ${ZONE} after reconfig" +check_nsec3 + +# Zone: nsec3-dyamic.kasp. (same) +set_zone_policy "nsec3-dynamic.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "check zone ${ZONE} after reconfig" +check_nsec3 + +# Zone: nsec3-change.kasp. (reconfigured) +set_zone_policy "nsec3-change.kasp" "nsec3-other" 1 3600 +set_nsec3param "1" "11" "8" +set_key_default_values "KEY1" +echo_i "check zone ${ZONE} after reconfig" +check_nsec3 + +# Zone: nsec3-dynamic-change.kasp. (reconfigured) +set_zone_policy "nsec3-dynamic-change.kasp" "nsec3-other" 1 3600 +set_nsec3param "1" "11" "8" +set_key_default_values "KEY1" +echo_i "check zone ${ZONE} after reconfig" +check_nsec3 + +# Zone: nsec3-dynamic-to-inline.kasp. (same) +set_zone_policy "nsec3-dynamic-to-inline.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "check zone ${ZONE} after reconfig" +check_nsec3 + +# Zone: nsec3-inline-to-dynamic.kasp. (same) +set_zone_policy "nsec3-inline-to-dynamic.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "initial check zone ${ZONE}" +check_nsec3 + +# Zone: nsec3-to-nsec.kasp. (reconfigured) +set_zone_policy "nsec3-to-nsec.kasp" "nsec" 1 3600 +set_nsec3param "1" "11" "8" +set_key_default_values "KEY1" +echo_i "check zone ${ZONE} after reconfig" +check_nsec + +# Zone: nsec3-to-optout.kasp. (reconfigured) +# DISABLED: +# There is a bug in the nsec3param building code that thinks when the +# optout bit is changed, the chain already exists. [GL #2216] +#set_zone_policy "nsec3-to-optout.kasp" "optout" 1 3600 +#set_nsec3param "1" "0" "0" +#set_key_default_values "KEY1" +#echo_i "check zone ${ZONE} after reconfig" +#check_nsec3 + +# Zone: nsec3-from-optout.kasp. (reconfigured) +# DISABLED: +# There is a bug in the nsec3param building code that thinks when the +# optout bit is changed, the chain already exists. [GL #2216] +#set_zone_policy "nsec3-from-optout.kasp" "nsec3" 1 3600 +#set_nsec3param "0" "0" "0" +#set_key_default_values "KEY1" +#echo_i "check zone ${ZONE} after reconfig" +#check_nsec3 + +# Zone: nsec3-other.kasp. (same) +set_zone_policy "nsec3-other.kasp" "nsec3-other" 1 3600 +set_nsec3param "1" "11" "8" +set_key_default_values "KEY1" +echo_i "check zone ${ZONE} after reconfig" +check_nsec3 + +# Using rndc signing -nsec3param (should fail) +set_zone_policy "nsec3-change.kasp" "nsec3-other" 1 3600 +echo_i "use rndc signing -nsec3param ${ZONE} to change NSEC3 settings" +rndccmd $SERVER signing -nsec3param 1 1 12 ffff $ZONE > rndc.signing.test$n.$ZONE || log_error "failed to call rndc signing -nsec3param $ZONE" +grep "zone uses dnssec-policy, use rndc dnssec command instead" rndc.signing.test$n.$ZONE > /dev/null || log_error "rndc signing -nsec3param should fail" +check_nsec3 + +# Test NSEC3 and NSEC3PARAM is the same after restart +set_zone_policy "nsec3.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "check zone ${ZONE} before restart" +check_nsec3 + +# Restart named, NSEC3 should stay the same. +ret=0 +echo "stop ns3" +stop_server --use-rndc --port ${CONTROLPORT} ${DIR} || ret=1 +test "$ret" -eq 0 || echo_i "failed" +status=$((status+ret)) + +ret=0 +echo "start ns3" +start_server --noclean --restart --port ${PORT} ${DIR} +test "$ret" -eq 0 || echo_i "failed" +status=$((status+ret)) + +prevsalt="${SALT}" +set_zone_policy "nsec3.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +SALT="${prevsalt}" +echo_i "check zone ${ZONE} after restart has salt ${SALT}" +check_nsec3 + +# Zone: nsec3-fails-to-load.kasp. (should be fixed after reload) +cp ns3/template.db.in ns3/nsec3-fails-to-load.kasp.db +rndc_reload ns3 10.53.0.3 + +set_zone_policy "nsec3-fails-to-load.kasp" "nsec3" 1 3600 +set_nsec3param "0" "0" "0" +set_key_default_values "KEY1" +echo_i "check zone ${ZONE} after reload" +check_nsec3 + +echo_i "exit status: $status" +[ $status -eq 0 ] || exit 1 |