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2b73101db6
Make sure an incoming IXFR containing an SOA record which is not placed
at the apex of the transferred zone does not result in a broken version
of the zone being served by named and/or a subsequent crash.
(cherry picked from commit 5547003a3d)
407 lines
14 KiB
Bash
407 lines
14 KiB
Bash
#!/bin/sh
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#
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# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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#
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, you can obtain one at https://mozilla.org/MPL/2.0/.
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#
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# See the COPYRIGHT file distributed with this work for additional
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# information regarding copyright ownership.
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# WARNING: The test labelled "testing request-ixfr option in view vs zone"
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# is fragile because it depends upon counting instances of records
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# in the log file - need a better approach <sdm> - until then,
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# if you add any tests above that point, you will break the test.
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SYSTEMTESTTOP=..
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. $SYSTEMTESTTOP/conf.sh
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wait_for_serial() (
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$DIG $DIGOPTS "@$1" "$2" SOA > "$4"
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serial=$(awk '$4 == "SOA" { print $7 }' "$4")
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[ "$3" -eq "${serial:--1}" ]
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)
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status=0
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n=0
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DIGOPTS="+tcp +noadd +nosea +nostat +noquest +nocomm +nocmd -p ${PORT}"
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SENDCMD="$PERL ../send.pl 10.53.0.2 ${EXTRAPORT1}"
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RNDCCMD="$RNDC -p ${CONTROLPORT} -c ../common/rndc.conf -s"
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n=$((n+1))
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echo_i "testing initial AXFR ($n)"
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ret=0
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$SENDCMD <<EOF
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/SOA/
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nil. 300 SOA ns.nil. root.nil. 1 300 300 604800 300
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/AXFR/
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nil. 300 SOA ns.nil. root.nil. 1 300 300 604800 300
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/AXFR/
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nil. 300 NS ns.nil.
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nil. 300 TXT "initial AXFR"
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a.nil. 60 A 10.0.0.61
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b.nil. 60 A 10.0.0.62
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/AXFR/
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nil. 300 SOA ns.nil. root.nil. 1 300 300 604800 300
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EOF
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sleep 1
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# Initially, ns1 is not authoritative for anything (see setup.sh).
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# Now that ans is up and running with the right data, we make it
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# a secondary for nil.
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cat <<EOF >>ns1/named.conf
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zone "nil" {
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type secondary;
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file "myftp.db";
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primaries { 10.53.0.2; };
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};
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EOF
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rndc_reload ns1 10.53.0.1
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retry_quiet 10 wait_for_serial 10.53.0.1 nil. 1 dig.out.test$n || ret=1
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$DIG $DIGOPTS @10.53.0.1 nil. TXT | grep 'initial AXFR' >/dev/null || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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n=$((n+1))
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echo_i "testing successful IXFR ($n)"
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ret=0
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# We change the IP address of a.nil., and the TXT record at the apex.
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# Then we do a SOA-only update.
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$SENDCMD <<EOF
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/SOA/
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nil. 300 SOA ns.nil. root.nil. 3 300 300 604800 300
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/IXFR/
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nil. 300 SOA ns.nil. root.nil. 3 300 300 604800 300
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nil. 300 SOA ns.nil. root.nil. 1 300 300 604800 300
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a.nil. 60 A 10.0.0.61
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nil. 300 TXT "initial AXFR"
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nil. 300 SOA ns.nil. root.nil. 2 300 300 604800 300
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nil. 300 TXT "successful IXFR"
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a.nil. 60 A 10.0.1.61
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nil. 300 SOA ns.nil. root.nil. 2 300 300 604800 300
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nil. 300 SOA ns.nil. root.nil. 3 300 300 604800 300
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nil. 300 SOA ns.nil. root.nil. 3 300 300 604800 300
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EOF
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sleep 1
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$RNDCCMD 10.53.0.1 refresh nil | sed 's/^/ns1 /' | cat_i
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sleep 2
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$DIG $DIGOPTS @10.53.0.1 nil. TXT | grep 'successful IXFR' >/dev/null || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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n=$((n+1))
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echo_i "testing AXFR fallback after IXFR failure (not exact error) ($n)"
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ret=0
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# Provide a broken IXFR response and a working fallback AXFR response
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$SENDCMD <<EOF
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/SOA/
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nil. 300 SOA ns.nil. root.nil. 4 300 300 604800 300
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/IXFR/
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nil. 300 SOA ns.nil. root.nil. 4 300 300 604800 300
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nil. 300 SOA ns.nil. root.nil. 3 300 300 604800 300
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nil. 300 TXT "delete-nonexistent-txt-record"
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nil. 300 SOA ns.nil. root.nil. 4 300 300 604800 300
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nil. 300 TXT "this-txt-record-would-be-added"
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nil. 300 SOA ns.nil. root.nil. 4 300 300 604800 300
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/AXFR/
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nil. 300 SOA ns.nil. root.nil. 3 300 300 604800 300
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/AXFR/
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nil. 300 NS ns.nil.
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nil. 300 TXT "fallback AXFR"
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/AXFR/
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nil. 300 SOA ns.nil. root.nil. 3 300 300 604800 300
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EOF
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sleep 1
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$RNDCCMD 10.53.0.1 refresh nil | sed 's/^/ns1 /' | cat_i
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sleep 2
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$DIG $DIGOPTS @10.53.0.1 nil. TXT | grep 'fallback AXFR' >/dev/null || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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n=$((n+1))
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echo_i "testing AXFR fallback after IXFR failure (bad SOA owner) ($n)"
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ret=0
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# Prepare for checking the logs later on.
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nextpart ns1/named.run >/dev/null
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# Provide a broken IXFR response and a working fallback AXFR response.
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$SENDCMD <<EOF
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/SOA/
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nil. 300 SOA ns.nil. root.nil. 4 300 300 604800 300
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/IXFR/
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nil. 300 SOA ns.nil. root.nil. 4 300 300 604800 300
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nil. 300 SOA ns.nil. root.nil. 3 300 300 604800 300
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bad-owner. 300 SOA ns.nil. root.nil. 4 300 300 604800 300
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test.nil. 300 TXT "serial 4, malformed IXFR"
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nil. 300 SOA ns.nil. root.nil. 4 300 300 604800 300
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/AXFR/
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nil. 300 SOA ns.nil. root.nil. 4 300 300 604800 300
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/AXFR/
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nil. 300 NS ns.nil.
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test.nil. 300 TXT "serial 4, fallback AXFR"
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/AXFR/
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nil. 300 SOA ns.nil. root.nil. 4 300 300 604800 300
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EOF
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$RNDCCMD 10.53.0.1 refresh nil | sed 's/^/ns1 /' | cat_i
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# A broken server would accept the malformed IXFR and apply its contents to the
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# zone. A fixed one would reject the IXFR and fall back to AXFR. Both IXFR and
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# AXFR above bring the nil. zone up to serial 4, but we cannot reliably query
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# for the SOA record to check whether the transfer was finished because a broken
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# server would send back SERVFAIL responses to SOA queries after accepting the
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# malformed IXFR. Instead, check transfer progress by querying for a TXT record
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# at test.nil. which is present in both IXFR and AXFR (with different contents).
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_wait_until_transfer_is_finished() {
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$DIG $DIGOPTS +tries=1 +time=1 @10.53.0.1 test.nil. TXT > dig.out.test$n.1 &&
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grep -q -F "serial 4" dig.out.test$n.1
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}
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if ! retry_quiet 10 _wait_until_transfer_is_finished; then
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echo_i "timed out waiting for version 4 of zone nil. to be transferred"
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ret=1
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fi
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# At this point a broken server would be serving a zone with no SOA records.
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# Try crashing it by triggering a SOA refresh query.
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$RNDCCMD 10.53.0.1 refresh nil | sed 's/^/ns1 /' | cat_i
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# Do not wait until the zone refresh completes - even if a crash has not
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# happened by now, a broken server would never serve the record which is only
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# present in the fallback AXFR, so checking for that is enough to verify if a
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# server is broken or not; if it is, it is bound to crash shortly anyway.
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$DIG $DIGOPTS test.nil. TXT @10.53.0.1 > dig.out.test$n.2 || ret=1
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grep -q -F "serial 4, fallback AXFR" dig.out.test$n.2 || ret=1
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# Ensure the expected error is logged.
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nextpart ns1/named.run | grep -q -F "SOA name mismatch" || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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n=$((n+1))
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echo_i "testing ixfr-from-differences option ($n)"
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# ns3 is primary; ns4 is secondary
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$CHECKZONE test. ns3/mytest.db > /dev/null 2>&1
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if [ $? -ne 0 ]
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then
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echo_i "named-checkzone returned failure on ns3/mytest.db"
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fi
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retry_quiet 10 wait_for_serial 10.53.0.4 test. 1 dig.out.test$n || ret=1
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nextpart ns4/named.run > /dev/null
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# modify the primary
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cp ns3/mytest1.db ns3/mytest.db
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$RNDCCMD 10.53.0.3 reload | sed 's/^/ns3 /' | cat_i
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# wait for primary to reload
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retry_quiet 10 wait_for_serial 10.53.0.3 test. 2 dig.out.test$n || ret=1
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# wait for secondary to reload
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tret=0
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retry_quiet 5 wait_for_serial 10.53.0.4 test. 2 dig.out.test$n || tret=1
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if [ $tret -eq 1 ]; then
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# re-noitfy after 5 seconds, then wait another 10
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$RNDCCMD 10.53.0.3 notify test | set 's/^/ns3 /' | cat_i
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retry_quiet 10 wait_for_serial 10.53.0.4 test. 2 dig.out.test$n || ret=1
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fi
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wait_for_log 10 'got incremental' ns4/named.run || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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n=$((n+1))
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echo_i "testing 'request-ixfr no' option inheritance from view ($n)"
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ret=0
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# There's a view with 2 zones. In the view, "request-ixfr yes"
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# but in the zone "sub.test", request-ixfr no"
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# we want to make sure that a change to sub.test results in AXFR, while
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# changes to test. result in IXFR
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cp ns3/subtest1.db ns3/subtest.db # change to sub.test zone, should be AXFR
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nextpart ns4/named.run > /dev/null
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$RNDCCMD 10.53.0.3 reload | sed 's/^/ns3 /' | cat_i
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# wait for primary to reload
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retry_quiet 10 wait_for_serial 10.53.0.3 sub.test. 3 dig.out.test$n || ret=1
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# wait for secondary to reload
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tret=0
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retry_quiet 5 wait_for_serial 10.53.0.4 sub.test. 3 dig.out.test$n || tret=1
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if [ $tret -eq 1 ]; then
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# re-noitfy after 5 seconds, then wait another 10
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$RNDCCMD 10.53.0.3 notify sub.test | set 's/^/ns3 /' | cat_i
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retry_quiet 10 wait_for_serial 10.53.0.4 sub.test. 3 dig.out.test$n || ret=1
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fi
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wait_for_log 10 'got nonincremental response' ns4/named.run || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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n=$((n+1))
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echo_i "testing 'request-ixfr yes' option inheritance from view ($n)"
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ret=0
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cp ns3/mytest2.db ns3/mytest.db # change to test zone, should be IXFR
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nextpart ns4/named.run > /dev/null
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$RNDCCMD 10.53.0.3 reload | sed 's/^/ns3 /' | cat_i
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# wait for primary to reload
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retry_quiet 10 wait_for_serial 10.53.0.3 test. 3 dig.out.test$n || ret=1
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# wait for secondary to reload
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tret=0
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retry_quiet 5 wait_for_serial 10.53.0.4 test. 3 dig.out.test$n || tret=1
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if [ $tret -eq 1 ]; then
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# re-noitfy after 5 seconds, then wait another 10
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$RNDCCMD 10.53.0.3 notify test | set 's/^/ns3 /' | cat_i
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retry_quiet 10 wait_for_serial 10.53.0.4 test. 3 dig.out.test$n || ret=1
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fi
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wait_for_log 10 'got incremental response' ns4/named.run || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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n=$((n+1))
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ret=0
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echo_i "testing DiG's handling of a multi message AXFR style IXFR response ($n)"
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(
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(sleep 10 && kill $$) 2>/dev/null &
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sub=$!
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$DIG -p ${PORT} ixfr=0 large @10.53.0.3 > dig.out.test$n
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kill $sub
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)
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lines=`grep hostmaster.large dig.out.test$n | wc -l`
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test ${lines:-0} -eq 2 || ret=1
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messages=`sed -n 's/^;;.*messages \([0-9]*\),.*/\1/p' dig.out.test$n`
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test ${messages:-0} -gt 1 || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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n=$((n+1))
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echo_i "test 'dig +notcp ixfr=<value>' vs 'dig ixfr=<value> +notcp' vs 'dig ixfr=<value>' ($n)"
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ret=0
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# Should be "switch to TCP" response
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$DIG $DIGOPTS +notcp ixfr=1 test @10.53.0.4 > dig.out1.test$n || ret=1
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$DIG $DIGOPTS ixfr=1 +notcp test @10.53.0.4 > dig.out2.test$n || ret=1
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digcomp dig.out1.test$n dig.out2.test$n || ret=1
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awk '$4 == "SOA" { soacnt++} END {if (soacnt == 1) exit(0); else exit(1);}' dig.out1.test$n || ret=1
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awk '$4 == "SOA" { if ($7 == 3) exit(0); else exit(1);}' dig.out1.test$n || ret=1
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#
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nextpart ns4/named.run > /dev/null
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# Should be incremental transfer.
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$DIG $DIGOPTS ixfr=1 test @10.53.0.4 > dig.out3.test$n || ret=1
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awk '$4 == "SOA" { soacnt++} END { if (soacnt == 6) exit(0); else exit(1);}' dig.out3.test$n || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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n=$((n+1))
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echo_i "check estimated IXFR size ($n)"
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ret=0
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# note IXFR delta size will be slightly bigger with version 1 transaction
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# headers as there is no correction for the overall record length storage.
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# Ver1 = 4 * (6 + 10 + 10 + 17 + 5 * 4) + 2 * (13 + 10 + 4) + (6 * 4) = 330
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# Ver2 = 4 * (6 + 10 + 10 + 17 + 5 * 4) + 2 * (13 + 10 + 4) = 306
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nextpart ns4/named.run | grep "IXFR delta size (306 bytes)" > /dev/null || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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# make sure ns5 has transfered the zone
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# wait for secondary to reload
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tret=0
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retry_quiet 5 wait_for_serial 10.53.0.5 test. 4 dig.out.test$n || tret=1
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if [ $tret -eq 1 ]; then
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# re-noitfy after 5 seconds, then wait another 10
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$RNDCCMD 10.53.0.3 notify test | set 's/^/ns3 /' | cat_i
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retry_quiet 10 wait_for_serial 10.53.0.5 test. 3 dig.out.test$n || ret=1
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fi
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n=$((n+1))
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echo_i "test 'provide-ixfr no;' (serial < current) ($n)"
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ret=0
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nextpart ns5/named.run > /dev/null
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# Should be "AXFR style" response
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$DIG $DIGOPTS ixfr=1 test @10.53.0.5 > dig.out1.test$n || ret=1
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# Should be "switch to TCP" response
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$DIG $DIGOPTS ixfr=1 +notcp test @10.53.0.5 > dig.out2.test$n || ret=1
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awk '$4 == "SOA" { soacnt++} END {if (soacnt == 2) exit(0); else exit(1);}' dig.out1.test$n || ret=1
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awk '$4 == "SOA" { soacnt++} END {if (soacnt == 1) exit(0); else exit(1);}' dig.out2.test$n || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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n=$((n+1))
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echo_i "checking whether dig calculates IXFR statistics correctly ($n)"
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ret=0
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$DIG $DIGOPTS +noedns +stat -b 10.53.0.4 @10.53.0.4 test. ixfr=2 > dig.out1.test$n
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get_dig_xfer_stats dig.out1.test$n > stats.dig
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diff ixfr-stats.good stats.dig > /dev/null || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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# Note: in the next two tests, we use ns4 logs for checking both incoming and
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# outgoing transfer statistics as ns4 is both a secondary server (for ns3) and a
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# primary server (for dig queries from the previous test) for "test".
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_wait_for_stats () {
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get_named_xfer_stats ns4/named.run "$1" test "$2" > "$3"
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diff ixfr-stats.good "$3" > /dev/null || return 1
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return 0
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}
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n=$((n+1))
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echo_i "checking whether named calculates incoming IXFR statistics correctly ($n)"
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ret=0
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retry_quiet 10 _wait_for_stats 10.53.0.3 "Transfer completed" stats.incoming
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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n=$((n+1))
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echo_i "checking whether named calculates outgoing IXFR statistics correctly ($n)"
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retry_quiet 10 _wait_for_stats 10.53.0.4 "IXFR ended" stats.outgoing
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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n=$((n+1))
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ret=0
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echo_i "testing fallback to AXFR when max-ixfr-ratio is exceeded ($n)"
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nextpart ns4/named.run > /dev/null
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cp ns3/mytest3.db ns3/mytest.db # change to test zone, too big for IXFR
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$RNDCCMD 10.53.0.3 reload | sed 's/^/ns3 /' | cat_i
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# wait for secondary to reload
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tret=0
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retry_quiet 5 wait_for_serial 10.53.0.4 test. 4 dig.out.test$n || tret=1
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if [ $tret -eq 1 ]; then
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# re-noitfy after 5 seconds, then wait another 10
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$RNDCCMD 10.53.0.3 notify test | set 's/^/ns3 /' | cat_i
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retry_quiet 10 wait_for_serial 10.53.0.4 test. 4 dig.out.test$n || ret=1
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fi
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wait_for_log 10 'got nonincremental response' ns4/named.run || ret=1
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status+ret))
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echo_i "exit status: $status"
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[ $status -eq 0 ] || exit 1
|