#!/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

. ../conf.sh

DIGCMD="$DIG +tcp -p ${PORT}"
RNDCCMD="$RNDC -p ${CONTROLPORT} -c ../_common/rndc.conf"

status=0

ret=0
n=1
stats=0
nsock0nstat=0
nsock1nstat=0
rndc_stats() {
  _ns=$1
  _ip=$2

  $RNDCCMD -s $_ip stats >/dev/null 2>&1 || return 1
  [ -f "${_ns}/named.stats" ] || return 1

  last_stats=named.stats.$_ns-$stats-$n
  mv ${_ns}/named.stats $last_stats
  stats=$((stats + 1))
}

echo_i "fetching a.example from ns2's initial configuration ($n)"
$DIGCMD +noauth a.example. @10.53.0.2 any >dig.out.ns2.1 || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "dumping initial stats for ns2 ($n)"
rndc_stats ns2 10.53.0.2 || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "verifying adb records in named.stats ($n)"
grep "ADB stats" $last_stats >/dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

echo_i "checking for 1 entry in adb hash table in named.stats ($n)"
grep "1 Addresses in hash table" $last_stats >/dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "verifying cache statistics in named.stats ($n)"
grep "Cache Statistics" $last_stats >/dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "checking for 2 entries in adb hash table in named.stats ($n)"
$DIGCMD a.example.info. @10.53.0.2 any >/dev/null 2>&1
rndc_stats ns2 10.53.0.2 || ret=1
grep "2 Addresses in hash table" $last_stats >/dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "dumping initial stats for ns3 ($n)"
rndc_stats ns3 10.53.0.3 || ret=1
nsock0nstat=$(grep "UDP/IPv4 sockets active" $last_stats | awk '{print $1}')
[ 0 -ne ${nsock0nstat} ] || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

echo_i "sending queries to ns3"
$DIGCMD +tries=2 +time=1 +recurse @10.53.0.3 foo.info. any >/dev/null 2>&1 || true

ret=0
echo_i "dumping updated stats for ns3 ($n)"
getstats() {
  rndc_stats ns3 10.53.0.3 || return 1
  grep "2 recursing clients" $last_stats >/dev/null || return 1
}
retry_quiet 5 getstats || ret=1
# confirm agreement with 'rndc recursing'
$RNDCCMD -s 10.53.0.3 recursing || ret=1
lines=$(grep -c "; client .*(tcp)" ns3/named.recursing || true)
[ "$lines" -eq 2 ] || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "verifying recursing clients output in named.stats ($n)"
grep "2 recursing clients" $last_stats >/dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "verifying active fetches output in named.stats ($n)"
grep "1 active fetches" $last_stats >/dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "verifying active sockets output in named.stats ($n)"
nsock1nstat=$(grep "UDP/IPv4 sockets active" $last_stats | awk '{print $1}')
[ $((nsock1nstat - nsock0nstat)) -eq 1 ] || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

# there should be 1 UDP and no TCP queries.  As the TCP counter is zero
# no status line is emitted.
ret=0
echo_i "verifying queries in progress in named.stats ($n)"
grep "1 UDP queries in progress" $last_stats >/dev/null || ret=1
grep "TCP queries in progress" $last_stats >/dev/null && ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "verifying bucket size output ($n)"
grep "bucket size" $last_stats >/dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "checking priming queries are counted ($n)"
grep "priming queries" $last_stats >/dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "checking that zones with slash are properly shown in XML output ($n)"
if $FEATURETEST --have-libxml2 && [ -x ${CURL} ]; then
  ${CURL} http://10.53.0.1:${EXTRAPORT1}/xml/v3/zones >curl.out.${n} 2>/dev/null || ret=1
  grep '<zone name="32/1.0.0.127-in-addr.example" rdataclass="IN">' curl.out.${n} >/dev/null || ret=1
else
  echo_i "skipping test as libxml2 and/or curl was not found"
fi
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "checking that zones return their type ($n)"
if $FEATURETEST --have-libxml2 && [ -x ${CURL} ]; then
  ${CURL} http://10.53.0.1:${EXTRAPORT1}/xml/v3/zones >curl.out.${n} 2>/dev/null || ret=1
  grep '<zone name="32/1.0.0.127-in-addr.example" rdataclass="IN"><type>primary</type>' curl.out.${n} >/dev/null || ret=1
else
  echo_i "skipping test as libxml2 and/or curl was not found"
fi
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "checking bind9.xsl vs xml ($n)"
if $FEATURETEST --have-libxml2 && "${CURL}" --http1.1 http://10.53.0.3:${EXTRAPORT1} >/dev/null 2>&1 && [ -x "${XSLTPROC}" ]; then
  $DIGCMD +notcp +recurse @10.53.0.3 soa . >dig.out.test$n.1 2>&1
  $DIGCMD +notcp +recurse @10.53.0.3 soa example >dig.out.test$n.2 2>&1
  # check multiple requests over the same socket
  time1=$($PERL -e 'print time(), "\n";')
  ${CURL} --http1.1 -o curl.out.${n}.xml http://10.53.0.3:${EXTRAPORT1}/xml/v3 \
    -o curl.out.${n}.xsl http://10.53.0.3:${EXTRAPORT1}/bind9.xsl 2>/dev/null || ret=1
  time2=$($PERL -e 'print time(), "\n";')
  test $((time2 - time1)) -lt 5 || ret=1
  diff ${TOP_SRCDIR}/bin/named/bind9.xsl curl.out.${n}.xsl || ret=1
  ${XSLTPROC} curl.out.${n}.xsl - <curl.out.${n}.xml >xsltproc.out.${n} 2>/dev/null || ret=1
  cp curl.out.${n}.xml stats.xml.out || ret=1

  #
  # grep for expected sections.
  #
  grep "<h1>ISC Bind 9 Configuration and Statistics</h1>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h2>Server Status</h2>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h2>Incoming Requests by DNS Opcode</h2>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h3>Incoming Queries by Query Type</h3>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h2>Outgoing Queries per view</h2>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h3>View " xsltproc.out.${n} >/dev/null || ret=1
  grep "<h2>Server Statistics</h2>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h2>Zone Maintenance Statistics</h2>" xsltproc.out.${n} >/dev/null || ret=1
  # grep "<h2>Resolver Statistics (Common)</h2>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h3>Resolver Statistics for View " xsltproc.out.${n} >/dev/null || ret=1
  grep "<h3>ADB Statistics for View " xsltproc.out.${n} >/dev/null || ret=1
  grep "<h3>Cache Statistics for View " xsltproc.out.${n} >/dev/null || ret=1
  # grep "<h3>Cache DB RRsets for View " xsltproc.out.${n} >/dev/null || ret=1
  grep "<h2>Traffic Size Statistics</h2>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h4>UDP Requests Received</h4>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h4>UDP Responses Sent</h4>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h4>TCP Requests Received</h4>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h4>TCP Responses Sent</h4>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h2>Socket I/O Statistics</h2>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h3>Zones for View " xsltproc.out.${n} >/dev/null || ret=1
  grep "<h2>Received QTYPES per view/zone</h2>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h3>View _default" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h4>Zone example" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h2>Response Codes per view/zone</h2>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h3>View _default" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h4>Zone example" xsltproc.out.${n} >/dev/null || ret=1
  # grep "<h2>Glue cache statistics</h2>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h3>View _default" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h4>Zone example" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h2>Memory Usage Summary</h2>" xsltproc.out.${n} >/dev/null || ret=1
  grep "<h2>Memory Contexts</h2>" xsltproc.out.${n} >/dev/null || ret=1
else
  echo_i "skipping test as libxml2 and/or curl with HTTP/1.1 support and/or xsltproc was not found"
fi
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

ret=0
echo_i "checking bind9.xml socket statistics ($n)"
if $FEATURETEST --have-libxml2 && [ -e stats.xml.out ] && [ -x "${XSLTPROC}" ]; then
  # Socket statistics (expect no errors)
  grep "<counter name=\"TCP4AcceptFail\">0</counter>" stats.xml.out >/dev/null || ret=1
  grep "<counter name=\"TCP4BindFail\">0</counter>" stats.xml.out >/dev/null || ret=1
  grep "<counter name=\"TCP4ConnFail\">0</counter>" stats.xml.out >/dev/null || ret=1
  grep "<counter name=\"TCP4OpenFail\">0</counter>" stats.xml.out >/dev/null || ret=1
  grep "<counter name=\"TCP4RecvErr\">0</counter>" stats.xml.out >/dev/null || ret=1
  # grep "<counter name=\"TCP4SendErr\">0</counter>" stats.xml.out >/dev/null || ret=1

  grep "<counter name=\"TCP6AcceptFail\">0</counter>" stats.xml.out >/dev/null || ret=1
  grep "<counter name=\"TCP6BindFail\">0</counter>" stats.xml.out >/dev/null || ret=1
  grep "<counter name=\"TCP6ConnFail\">0</counter>" stats.xml.out >/dev/null || ret=1
  grep "<counter name=\"TCP6OpenFail\">0</counter>" stats.xml.out >/dev/null || ret=1
  grep "<counter name=\"TCP6RecvErr\">0</counter>" stats.xml.out >/dev/null || ret=1
  grep "<counter name=\"TCP6SendErr\">0</counter>" stats.xml.out >/dev/null || ret=1
else
  echo_i "skipping test as libxml2 and/or stats.xml.out file and/or xsltproc was not found"
fi
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

echo_i "Check that 'zone-statistics full;' is processed by 'rndc reconfig' ($n)"
ret=0
# off by default
rndc_stats ns2 10.53.0.2 || ret=1
sed -n '/Per Zone Query Statistics/,/^++/p' $last_stats | grep -F '[example]' >/dev/null && ret=0
# turn on
copy_setports ns2/named2.conf.in ns2/named.conf
rndc_reconfig ns2 10.53.0.2
rndc_stats ns2 10.53.0.2 || ret=1
sed -n '/Per Zone Query Statistics/,/^++/p' $last_stats | grep -F '[example]' >/dev/null || ret=1
# turn off
copy_setports ns2/named.conf.in ns2/named.conf
rndc_reconfig ns2 10.53.0.2
rndc_stats ns2 10.53.0.2 || ret=1
sed -n '/Per Zone Query Statistics/,/^++/p' $last_stats | grep -F '[example]' >/dev/null && ret=0
# turn on
copy_setports ns2/named2.conf.in ns2/named.conf
rndc_reconfig ns2 10.53.0.2
rndc_stats ns2 10.53.0.2 || ret=1
sed -n '/Per Zone Query Statistics/,/^++/p' $last_stats | grep -F '[example]' >/dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))

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