168dba163c
The old name "common" clashes with the convention of system test directory naming. It appears as a system test directory, but it only contains helper files. To reduce confusion and to allow automatic detection of issues with possibly missing test files, rename the helper directory to "_common". The leading underscore indicates the directory is different and the its name can no longer be confused with regular system test directories.
204 lines
6.9 KiB
Bash
204 lines
6.9 KiB
Bash
#!/bin/sh
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# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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#
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# SPDX-License-Identifier: MPL-2.0
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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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set -e
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# shellcheck source=../conf.sh
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. ../conf.sh
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dig_with_opts() {
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"${DIG}" -p "${PORT}" "$@"
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}
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rndccmd() {
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"${RNDC}" -p "${CONTROLPORT}" -c ../_common/rndc.conf -s "$@"
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}
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status=0
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n=0
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n=$((n + 1))
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echo_i "initializing TCP statistics ($n)"
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ret=0
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rndccmd 10.53.0.1 stats || ret=1
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rndccmd 10.53.0.2 stats || ret=1
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mv ns1/named.stats ns1/named.stats.test$n
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mv ns2/named.stats ns2/named.stats.test$n
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ntcp10="$(grep "TCP requests received" ns1/named.stats.test$n | tail -1 | awk '{print $1}')"
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ntcp20="$(grep "TCP requests received" ns2/named.stats.test$n | tail -1 | awk '{print $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=$((n + 1))
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echo_i "checking TCP request statistics (resolver) ($n)"
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ret=0
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dig_with_opts @10.53.0.3 txt.example. > dig.out.test$n
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sleep 1
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rndccmd 10.53.0.1 stats || ret=1
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rndccmd 10.53.0.2 stats || ret=1
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mv ns1/named.stats ns1/named.stats.test$n
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mv ns2/named.stats ns2/named.stats.test$n
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ntcp11="$(grep "TCP requests received" ns1/named.stats.test$n | tail -1 | awk '{print $1}')"
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ntcp21="$(grep "TCP requests received" ns2/named.stats.test$n | tail -1 | awk '{print $1}')"
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if [ "$ntcp10" -ge "$ntcp11" ]; then ret=1; fi
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if [ "$ntcp20" -ne "$ntcp21" ]; then ret=1; fi
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status + ret))
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n=$((n + 1))
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echo_i "checking TCP request statistics (forwarder) ($n)"
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ret=0
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dig_with_opts @10.53.0.4 txt.example. > dig.out.test$n
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sleep 1
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rndccmd 10.53.0.1 stats || ret=1
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rndccmd 10.53.0.2 stats || ret=1
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mv ns1/named.stats ns1/named.stats.test$n
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mv ns2/named.stats ns2/named.stats.test$n
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ntcp12="$(grep "TCP requests received" ns1/named.stats.test$n | tail -1 | awk '{print $1}')"
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ntcp22="$(grep "TCP requests received" ns2/named.stats.test$n | tail -1 | awk '{print $1}')"
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if [ "$ntcp11" -ne "$ntcp12" ]; then ret=1; fi
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if [ "$ntcp21" -ge "$ntcp22" ];then ret=1; fi
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if [ $ret != 0 ]; then echo_i "failed"; fi
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status=$((status + ret))
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# -------- TCP high-water tests ----------
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refresh_tcp_stats() {
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rndccmd 10.53.0.5 status > rndc.out.$n || ret=1
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TCP_CUR="$(sed -n "s/^tcp clients: \([0-9][0-9]*\).*/\1/p" rndc.out.$n)"
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TCP_LIMIT="$(sed -n "s/^tcp clients: .*\/\([0-9][0-9]*\)/\1/p" rndc.out.$n)"
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TCP_HIGH="$(sed -n "s/^TCP high-water: \([0-9][0-9]*\)/\1/p" rndc.out.$n)"
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}
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# Send a command to the tool script listening on 10.53.0.6.
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send_command() {
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nextpart ans6/ans.run > /dev/null
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echo "$*" | send 10.53.0.6 "${CONTROLPORT}"
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wait_for_log_peek 10 "result=" ans6/ans.run || ret=1
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if ! nextpartpeek ans6/ans.run | grep -qF "result=OK"; then
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return 1
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fi
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}
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# Instructs ans6 to open $1 TCP connections to 10.53.0.5.
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open_connections() {
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send_command "open" "${1}" 10.53.0.5 "${PORT}" || return 1
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}
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# Instructs ans6 to close $1 TCP connections to 10.53.0.5.
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close_connections() {
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send_command "close" "${1}" || return 1
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}
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# Check TCP connections are working normally before opening
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# multiple connections
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n=$((n + 1))
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echo_i "checking TCP query repsonse ($n)"
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ret=0
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dig_with_opts +tcp @10.53.0.5 txt.example > dig.out.test$n
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grep "status: NXDOMAIN" dig.out.test$n > /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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# Check TCP statistics after server startup before using them as a baseline for
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# subsequent checks.
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n=$((n + 1))
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echo_i "TCP high-water: check initial statistics ($n)"
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ret=0
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refresh_tcp_stats
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assert_int_equal "${TCP_CUR}" 0 "current TCP clients count" || ret=1
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# We compare initial tcp-highwater value with 1 because as part of the
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# system test startup, the script start.pl executes dig to check if target
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# named is running, and that increments tcp-quota by one.
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assert_int_equal "${TCP_HIGH}" 1 "tcp-highwater count" || 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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# Ensure the TCP high-water statistic gets updated after some TCP connections
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# are established.
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n=$((n + 1))
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echo_i "TCP high-water: check value after some TCP connections are established ($n)"
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ret=0
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OLD_TCP_CUR="${TCP_CUR}"
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TCP_ADDED=9
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open_connections "${TCP_ADDED}" || ret=1
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check_stats_added() {
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refresh_tcp_stats
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assert_int_equal "${TCP_CUR}" $((OLD_TCP_CUR + TCP_ADDED)) "current TCP clients count" || return 1
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assert_int_equal "${TCP_HIGH}" $((OLD_TCP_CUR + TCP_ADDED)) "TCP high-water value" || return 1
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}
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retry 2 check_stats_added || 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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# Ensure the TCP high-water statistic remains unchanged after some TCP
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# connections are closed.
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n=$((n + 1))
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echo_i "TCP high-water: check value after some TCP connections are closed ($n)"
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ret=0
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OLD_TCP_CUR="${TCP_CUR}"
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OLD_TCP_HIGH="${TCP_HIGH}"
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TCP_REMOVED=5
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close_connections "${TCP_REMOVED}" || ret=1
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check_stats_removed() {
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refresh_tcp_stats
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assert_int_equal "${TCP_CUR}" $((OLD_TCP_CUR - TCP_REMOVED)) "current TCP clients count" || return 1
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assert_int_equal "${TCP_HIGH}" "${OLD_TCP_HIGH}" "TCP high-water value" || return 1
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}
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retry 2 check_stats_removed || 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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# Ensure the TCP high-water statistic never exceeds the configured TCP clients
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# limit.
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n=$((n + 1))
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echo_i "TCP high-water: ensure tcp-clients is an upper bound ($n)"
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ret=0
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open_connections $((TCP_LIMIT + 1)) || ret=1
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check_stats_limit() {
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refresh_tcp_stats
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assert_int_equal "${TCP_CUR}" "${TCP_LIMIT}" "current TCP clients count" || return 1
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assert_int_equal "${TCP_HIGH}" "${TCP_LIMIT}" "TCP high-water value" || return 1
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}
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retry 2 check_stats_limit || 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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# Check TCP connections are working normally before opening
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# multiple connections
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n=$((n + 1))
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echo_i "checking TCP response recovery ($n)"
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ret=0
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# "0" closes all connections
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close_connections 0 || ret=1
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dig_with_opts +tcp @10.53.0.5 txt.example > dig.out.test$n || ret=1
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grep "status: NXDOMAIN" dig.out.test$n > /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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####################################################
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# NOTE: The next test resets the debug level to 1. #
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####################################################
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n=$((n + 1))
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echo_i "checking that BIND 9 doesn't crash on long TCP messages ($n)"
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ret=0
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# Avoid logging useless information.
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rndccmd 10.53.0.1 trace 1 || ret=1
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{ $PERL ../packet.pl -a "10.53.0.1" -p "${PORT}" -t tcp -r 300000 1996-alloc_dnsbuf-crash-test.pkt || ret=1 ; } | cat_i
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dig_with_opts +tcp @10.53.0.1 txt.example > dig.out.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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echo_i "exit status: $status"
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[ $status -eq 0 ] || exit 1
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