#!/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.

testsock6() {
	if test -n "$PERL" && $PERL -e "use IO::Socket::IP;" 2> /dev/null
	then
		$PERL "$TOP_SRCDIR/bin/tests/system/testsock6.pl" "$@"
	else
		false
	fi
}

export LC_ALL=C


#
# Common lists of system tests to run.
#
# The following tests are hard-coded to use ports 5300 and 9953. For
# this reason, these must be run sequentially.
#
# Sequential tests that only run on unix/linux should be added to
# SEQUENTIAL_UNIX in conf.sh.in
#
SEQUENTIAL_COMMON=""

#
# These tests can use ports assigned by the caller (other than 5300
# and 9953). Because separate blocks of ports can be used for teach
# test, these tests can be run in parallel.
#
# Parallel tests that only run on unix/linux should be added to
# PARALLEL_UNIX in conf.sh.in;
#
# Note: some of the longer-running tests such as serve-stale and
# rpzrecurse are scheduled first, in order to get more benefit from
# parallelism.
#
PARALLEL_COMMON="
rpzrecurse
serve-stale
dupsigs
acl
additional
addzone
allow-query
auth
autosign
builtin
cacheclean
case
catz
cds
checkconf
checknames
checkzone
database
digdelv
dlz
dns64
dsdigest
ecdsa
eddsa
ednscompliance
emptyzones
fetchlimit
formerr
forward
geoip2
glue
idna
include-multiplecfg
inline
integrity
ixfr
journal
keepalive
limits
masterfile
masterformat
metadata
mirror
mkeys
names
notify
nsec3
nslookup
nsupdate
padding
pending
reclimit
redirect
resolver
rndc
rootkeysentinel
rpz
rrchecker
rrl
rrsetorder
rsabigexponent
runtime
sfcache
smartsign
sortlist
spf
staticstub
statistics
statschannel
stub
synthfromdnssec
tkey
tools
tsig
tsiggss
ttl
unknown
upforwd
verify
views
wildcard
xfer
xferquota
zero
zonechecks"

#
# Set up color-coded test output
#
if [ ${SYSTEMTEST_FORCE_COLOR:-0} -eq 1 ] || test -t 1 && type tput > /dev/null 2>&1 && tput setaf 7 > /dev/null 2>&1 ; then
    export COLOR_END=$(tput setaf 4)    # blue
    export COLOR_FAIL=$(tput setaf 1)   # red
    export COLOR_INFO=$(tput bold)      # bold
    export COLOR_NONE=$(tput sgr0)
    export COLOR_PASS=$(tput setaf 2)   # green
    export COLOR_START=$(tput setaf 4)  # blue
    export COLOR_WARN=$(tput setaf 3)   # yellow
else
    # set to empty strings so printf succeeds
    export COLOR_END=''
    export COLOR_FAIL=''
    export COLOR_INFO=''
    export COLOR_NONE=''
    export COLOR_PASS=''
    export COLOR_START=''
    export COLOR_WARN=''
fi

export SYSTESTDIR="$(basename $PWD)"

if type printf > /dev/null 2>&1
then
	echofail () {
		printf "${COLOR_FAIL}%s${COLOR_NONE}\n" "$*"
	}
	echowarn () {
		printf "${COLOR_WARN}%s${COLOR_NONE}\n" "$*"
	}
	echopass () {
		printf "${COLOR_PASS}%s${COLOR_NONE}\n" "$*"
	}
	echoinfo () {
		printf "${COLOR_INFO}%s${COLOR_NONE}\n" "$*"
	}
	echostart () {
		printf "${COLOR_START}%s${COLOR_NONE}\n" "$*"
	}
	echoend () {
		printf "${COLOR_END}%s${COLOR_NONE}\n" "$*"
	}
	echo_i() {
	    printf '%s\n' "$*" | while IFS= read -r __LINE ; do
	       echoinfo "I:$__LINE"
	    done
	}

	echo_ic() {
	    printf '%s\n' "$*" | while IFS= read -r __LINE ; do
	       echoinfo "I:  $__LINE"
	    done
	}

	echo_d() {
	    printf '%s\n' "$*" | while IFS= read -r __LINE ; do
	       echoinfo "D:$__LINE"
	    done
	}
else
	echofail () {
		echo "$*"
	}
	echowarn () {
		echo "$*"
	}
	echopass () {
		echo "$*"
	}
	echoinfo () {
		echo "$*"
	}
	echostart () {
		echo "$*"
	}
	echoend () {
		echo "$*"
	}

	echo_i() {
	    echo "$@" | while IFS= read -r __LINE ; do
	       echoinfo "I:$__LINE"
	    done
	}

	echo_ic() {
	    echo "$@" | while IFS= read -r __LINE ; do
	       echoinfo "I:  $__LINE"
	    done
	}

	echo_d() {
	    echo "$@" | while IFS= read -r __LINE ; do
	       echoinfo "D:$__LINE"
	    done
	}
fi

cat_i() {
    while IFS= read -r __LINE ; do
       echoinfo "I:$__LINE"
    done
}

cat_d() {
    while IFS= read -r __LINE ; do
       echoinfo "D:$__LINE"
    done
}

digcomp() {
    { output=$($PERL $TOP_SRCDIR/bin/tests/system/digcomp.pl "$@"); result=$?; } || true
    [ -n "$output" ] &&  { echo "digcomp failed:"; echo "$output"; } | cat_i
    return $result
}

start_server() {
    $PERL "$TOP_SRCDIR/bin/tests/system/start.pl" "$SYSTESTDIR" "$@"
}

stop_server() {
    $PERL "$TOP_SRCDIR/bin/tests/system/stop.pl" "$SYSTESTDIR" "$@"
}

send() {
    $PERL "$TOP_SRCDIR/bin/tests/system/send.pl" "$@"
}

#
# Useful variables in test scripts
#

# The following script sets the following algorithm-related variables. These
# are selected randomly at runtime from a list of supported algorithms. The
# randomization is deterministic and remains stable for a period of time for a
# given platform.
#
# Default algorithm for testing.
# DEFAULT_ALGORITHM
# DEFAULT_ALGORITHM_NUMBER
# DEFAULT_BITS
#
# This is an alternative algorithm for test cases that require more than one
# algorithm (for example algorithm rollover). Must be different from
# DEFAULT_ALGORITHM.
# ALTERNATIVE_ALGORITHM
# ALTERNATIVE_ALGORITHM_NUMBER
# ALTERNATIVE_BITS
#
# This is an algorithm that is used for tests against the "disable-algorithms"
# configuration option. Must be different from above algorithms.
# DISABLED_ALGORITHM
# DISABLED_ALGORITHM_NUMBER
# DISABLED_BITS
#
# There are multiple algoritms sets to choose from (see get_algorithms.py). To
# override the default choice, set the ALGORITHM_SET env var (see mkeys system
# test for example).
eval "$($PYTHON "$TOP_SRCDIR/bin/tests/system/get_algorithms.py")"

# Default HMAC algorithm.
# also update _common/rndc.conf and _common/rndc.key when updating DEFAULT_HMAC
export DEFAULT_HMAC=hmac-sha256

#
# Useful functions in test scripts
#

# assert_int_equal: compare two integer variables, $1 and $2
#
# If $1 and $2 are equal, return 0; if $1 and $2 are not equal, report
# the error using the description of the tested variable provided in $3
# and return 1.
assert_int_equal() {
	found="$1"
	expected="$2"
	description="$3"

	if [ "${expected}" -ne "${found}" ]; then
		echo_i "incorrect ${description}: got ${found}, expected ${expected}"
		return 1
	fi

	return 0
}

# keyfile_to_keys_section: helper function for keyfile_to_*_keys() which
# converts keyfile data into a key-style trust anchor configuration
# section using the supplied parameters
keyfile_to_keys() {
    section_name=$1
    key_prefix=$2
    shift
    shift
    echo "$section_name {"
    for keyname in $*; do
	awk '!/^; /{
	    printf "\t\""$1"\" "
	    printf "'"$key_prefix "'"
	    printf $4 " " $5 " " $6 " \""
	    for (i=7; i<=NF; i++) printf $i
	    printf "\";\n"
	}' $keyname.key
    done
    echo "};"
}

# keyfile_to_dskeys_section: helper function for keyfile_to_*_dskeys()
# converts keyfile data into a DS-style trust anchor configuration
# section using the supplied parameters
keyfile_to_dskeys() {
    section_name=$1
    key_prefix=$2
    shift
    shift
    echo "$section_name {"
    for keyname in $*; do
        $DSFROMKEY $keyname.key | \
	awk '!/^; /{
	    printf "\t\""$1"\" "
	    printf "'"$key_prefix "'"
	    printf $4 " " $5 " " $6 " \""
	    for (i=7; i<=NF; i++) printf $i
	    printf "\";\n"
	}'
    done
    echo "};"
}

# keyfile_to_trusted_keys: convert key data contained in the keyfile(s)
# provided to a "trust-keys" section suitable for including in a
# resolver's configuration file
keyfile_to_trusted_keys() {
    keyfile_to_keys "trusted-keys" "" $*
}

# keyfile_to_static_keys: convert key data contained in the keyfile(s)
# provided to a *static-key* "trust-anchors" section suitable for including in
# a resolver's configuration file
keyfile_to_static_keys() {
    keyfile_to_keys "trust-anchors" "static-key" $*
}

# keyfile_to_initial_keys: convert key data contained in the keyfile(s)
# provided to an *initial-key* "trust-anchors" section suitable for including
# in a resolver's configuration file
keyfile_to_initial_keys() {
    keyfile_to_keys "trust-anchors" "initial-key" $*
}

# keyfile_to_static_ds_keys: convert key data contained in the keyfile(s)
# provided to a *static-ds* "trust-anchors" section suitable for including in a
# resolver's configuration file
keyfile_to_static_ds() {
    keyfile_to_dskeys "trust-anchors" "static-ds" $*
}

# keyfile_to_initial_ds_keys: convert key data contained in the keyfile(s)
# provided to an *initial-ds* "trust-anchors" section suitable for including
# in a resolver's configuration file
keyfile_to_initial_ds() {
    keyfile_to_dskeys "trust-anchors" "initial-ds" $*
}

# keyfile_to_key_id: convert a key file name to a key ID
#
# For a given key file name (e.g. "Kexample.+013+06160") provided as $1,
# print the key ID with leading zeros stripped ("6160" for the
# aforementioned example).
keyfile_to_key_id() {
	echo "$1" | sed "s/.*+0\{0,4\}//"
}

# private_type_record: write a private type record recording the state of the
# signing process
#
# For a given zone ($1), algorithm number ($2) and key file ($3), print the
# private type record with default type value of 65534, indicating that the
# signing process for this key is completed.
private_type_record() {
        _zone=$1
        _algorithm=$2
        _keyfile=$3

        _id=$(keyfile_to_key_id "$_keyfile")

        printf "%s. 0 IN TYPE65534 %s 5 %02x%04x0000\n" "$_zone" "\\#" "$_algorithm" "$_id"
}

# nextpart*() - functions for reading files incrementally
#
# These functions aim to facilitate looking for (or waiting for)
# messages which may be logged more than once throughout the lifetime of
# a given named instance by outputting just the part of the file which
# has been appended since the last time we read it.
#
# Calling some of these functions causes temporary *.prev files to be
# created that need to be cleaned up manually (usually by a given system
# test's clean.sh script).
#
# Note that unlike other nextpart*() functions, nextpartread() is not
# meant to be directly used in system tests; its sole purpose is to
# reduce code duplication below.
#
# A quick usage example:
#
#     $ echo line1 > named.log
#     $ echo line2 >> named.log
#     $ nextpart named.log
#     line1
#     line2
#     $ echo line3 >> named.log
#     $ nextpart named.log
#     line3
#     $ nextpart named.log
#     $ echo line4 >> named.log
#     $ nextpartpeek named.log
#     line4
#     $ nextpartpeek named.log
#     line4
#     $ nextpartreset named.log
#     $ nextpartpeek named.log
#     line1
#     line2
#     line3
#     line4
#     $ nextpart named.log
#     line1
#     line2
#     line3
#     line4
#     $ nextpart named.log
#     $

# nextpartreset: reset the marker used by nextpart() and nextpartpeek()
# so that it points to the start of the given file
nextpartreset() {
    echo "0" > $1.prev
}

# nextpartread: read everything that's been appended to a file since the
# last time nextpart() was called and print it to stdout, print the
# total number of lines read from that file so far to file descriptor 3
nextpartread() {
    [ -f $1.prev ] || nextpartreset $1
    prev=$(cat $1.prev)
    awk "NR > $prev "'{ print }
	 END          { print NR > "/dev/stderr" }' $1 2>&3
}

# nextpart: read everything that's been appended to a file since the
# last time nextpart() was called
nextpart() {
	nextpartread $1 3> $1.prev.tmp
	mv $1.prev.tmp $1.prev
}

# nextpartpeek: read everything that's been appended to a file since the
# last time nextpart() was called
nextpartpeek() {
	nextpartread $1 3> /dev/null
}

# _search_log: look for message $1 in file $2 with nextpart().
_search_log() (
	msg="$1"
	file="$2"
	nextpart "$file" | grep -F -e "$msg" > /dev/null
)

# _search_log_re: same as _search_log but the message is an grep -E regex
_search_log_re() (
	msg="$1"
	file="$2"
	nextpart "$file" | grep -E -e "$msg" > /dev/null
)

# _search_log_peek: look for message $1 in file $2 with nextpartpeek().
_search_log_peek() (
	msg="$1"
	file="$2"
	nextpartpeek "$file" | grep -F -e "$msg" > /dev/null
)

# wait_for_log: wait until message $2 in file $3 appears.  Bail out after
# $1 seconds.  This needs to be used in conjunction with a prior call to
# nextpart() or nextpartreset() on the same file to guarantee the offset is
# set correctly.  Tests using wait_for_log() are responsible for cleaning up
# the created <file>.prev files.
wait_for_log() (
	timeout="$1"
	msg="$2"
	file="$3"
	retry_quiet "$timeout" _search_log "$msg" "$file" && return 0
	echo_i "exceeded time limit waiting for literal '$msg' in $file"
        return 1
)

# wait_for_log_re: same as wait_for_log, but the message is an grep -E regex
wait_for_log_re() (
	timeout="$1"
	msg="$2"
	file="$3"
	retry_quiet "$timeout" _search_log_re "$msg" "$file" && return 0
	echo_i "exceeded time limit waiting for regex '$msg' in $file"
        return 1
)

# wait_for_log_peek: similar to wait_for_log() but peeking, so the file offset
# does not change.
wait_for_log_peek() (
	timeout="$1"
	msg="$2"
	file="$3"
	retry_quiet "$timeout" _search_log_peek "$msg" "$file" && return 0
	echo_i "exceeded time limit waiting for literal '$msg' in $file"
        return 1
)

# _retry: keep running a command until it succeeds, up to $1 times, with
# one-second intervals, optionally printing a message upon every attempt
_retry() {
	__retries="${1}"
	shift

	while :; do
		if "$@"; then
			return 0
		fi
		__retries=$((__retries-1))
		if [ "${__retries}" -gt 0 ]; then
			if [ "${__retry_quiet}" -ne 1 ]; then
				echo_i "retrying"
			fi
			sleep 1
		else
			return 1
		fi
	done
}

# retry: call _retry() in verbose mode
retry() {
	__retry_quiet=0
	_retry "$@"
}

# retry_quiet: call _retry() in silent mode
retry_quiet() {
	__retry_quiet=1
	_retry "$@"
}

# _repeat: keep running command up to $1 times, unless it fails
_repeat() (
    __retries="${1}"
    shift
    while :; do
	if ! "$@"; then
	    return 1
	fi
	__retries=$((__retries-1))
	if [ "${__retries}" -le 0 ]; then
	    break
	fi
    done
    return 0
)

_times() {
	awk "BEGIN{ for(i = 1; i <= $1; i++) print i}";
}

rndc_reload() {
    $RNDC -c ../_common/rndc.conf -s $2 -p ${CONTROLPORT} reload $3 2>&1 | sed 's/^/'"I:$1"' /'
    # reloading single zone is synchronous, if we're reloading whole server
    # we need to wait for reload to finish
    if [ -z "$3" ]; then
        for _ in $(_times 10); do
            $RNDC -c ../_common/rndc.conf -s $2 -p ${CONTROLPORT} status | grep "reload/reconfig in progress" > /dev/null || break
            sleep 1
        done
    fi
}

rndc_reconfig() {
    seconds=${3:-10}
    $RNDC -c ../_common/rndc.conf -s "$2" -p "${CONTROLPORT}" reconfig 2>&1 | sed 's/^/'"I:$1"' /'
    for _ in $(_times "$seconds"); do
        "$RNDC" -c ../_common/rndc.conf -s "$2" -p "${CONTROLPORT}" status | grep "reload/reconfig in progress" > /dev/null || break
        sleep 1
    done
}

# rndc_dumpdb: call "rndc dumpdb [...]" and wait until it completes
#
# The first argument is the name server instance to send the command to, in the
# form of "nsX" (where "X" is the instance number), e.g. "ns5".  The remaining
# arguments, if any, are appended to the rndc command line after "dumpdb".
#
# Control channel configuration for the name server instance to send the
# command to must match the contents of bin/tests/system/_common/rndc.conf.
#
# rndc output is stored in a file called rndc.out.test${n}; the "n" variable is
# required to be set by the calling tests.sh script.
#
# Return 0 if the dump completes successfully; return 1 if rndc returns an exit
# code other than 0 or if the "; Dump complete" string does not appear in the
# dump within 10 seconds.
rndc_dumpdb() {
	__ret=0
	__dump_complete=0
	__server="${1}"
	__ip="10.53.0.$(echo "${__server}" | tr -c -d "0-9")"

	shift
	${RNDC} -c ../_common/rndc.conf -p "${CONTROLPORT}" -s "${__ip}" dumpdb "$@" > "rndc.out.test${n}" 2>&1 || __ret=1

	for _ in 0 1 2 3 4 5 6 7 8 9
	do
		if grep '^; Dump complete$' "${__server}/named_dump.db" > /dev/null; then
			mv "${__server}/named_dump.db" "${__server}/named_dump.db.test${n}"
			__dump_complete=1
			break
		fi
		sleep 1
	done

	if [ ${__dump_complete} -eq 0 ]; then
		echo_i "timed out waiting for 'rndc dumpdb' to finish"
		__ret=1
	fi

	return ${__ret}
}

# get_dig_xfer_stats: extract transfer statistics from dig output stored
# in $1, converting them to a format used by some system tests.
get_dig_xfer_stats() {
	LOGFILE="$1"
	sed -n "s/^;; XFR size: .*messages \([0-9][0-9]*\).*/messages=\1/p" "${LOGFILE}"
	sed -n "s/^;; XFR size: \([0-9][0-9]*\) records.*/records=\1/p" "${LOGFILE}"
	sed -n "s/^;; XFR size: .*bytes \([0-9][0-9]*\).*/bytes=\1/p" "${LOGFILE}"
}

# get_named_xfer_stats: from named log file $1, extract transfer
# statistics for the last transfer for peer $2 and zone $3 (from a log
# message which has to contain the string provided in $4), converting
# them to a format used by some system tests.
get_named_xfer_stats() {
	LOGFILE="$1"
	PEER="$(echo $2 | sed 's/\./\\./g')"
	ZONE="$(echo $3 | sed 's/\./\\./g')"
	MESSAGE="$4"
	grep " ${PEER}#.*${MESSAGE}:" "${LOGFILE}" | \
		sed -n "s/.* '${ZONE}\/.* \([0-9][0-9]*\) messages.*/messages=\1/p" | tail -1
	grep " ${PEER}#.*${MESSAGE}:" "${LOGFILE}" | \
		sed -n "s/.* '${ZONE}\/.* \([0-9][0-9]*\) records.*/records=\1/p" | tail -1
	grep " ${PEER}#.*${MESSAGE}:" "${LOGFILE}" | \
		sed -n "s/.* '${ZONE}\/.* \([0-9][0-9]*\) bytes.*/bytes=\1/p" | tail -1
}

# copy_setports - Copy Configuration File and Replace Ports
#
# Convenience function to copy a configuration file, replacing the tokens
# QUERYPORT, CONTROLPORT and EXTRAPORT[1-8] with the values of the equivalent
# environment variables. (These values are set by test runner, which calls the
# scripts invoking this function.)
#
# Usage:
#   copy_setports infile outfile
#
copy_setports() {
    dir=$(echo "$TMPDIR" | sed 's/\//\\\//g')

    sed -e "s/@TMPDIR@/${dir}/g" \
        -e "s/@PORT@/${PORT}/g" \
        -e "s/@TLSPORT@/${TLSPORT}/g" \
        -e "s/@HTTPPORT@/${HTTPPORT}/g" \
        -e "s/@HTTPSPORT@/${HTTPSPORT}/g" \
        -e "s/@EXTRAPORT1@/${EXTRAPORT1}/g" \
        -e "s/@EXTRAPORT2@/${EXTRAPORT2}/g" \
        -e "s/@EXTRAPORT3@/${EXTRAPORT3}/g" \
        -e "s/@EXTRAPORT4@/${EXTRAPORT4}/g" \
        -e "s/@EXTRAPORT5@/${EXTRAPORT5}/g" \
        -e "s/@EXTRAPORT6@/${EXTRAPORT6}/g" \
        -e "s/@EXTRAPORT7@/${EXTRAPORT7}/g" \
        -e "s/@EXTRAPORT8@/${EXTRAPORT8}/g" \
        -e "s/@CONTROLPORT@/${CONTROLPORT}/g" \
        -e "s/@DEFAULT_ALGORITHM@/${DEFAULT_ALGORITHM}/g" \
        -e "s/@DEFAULT_ALGORITHM_NUMBER@/${DEFAULT_ALGORITHM_NUMBER}/g" \
        -e "s/@DEFAULT_BITS@/${DEFAULT_BITS}/g" \
        -e "s/@ALTERNATIVE_ALGORITHM@/${ALTERNATIVE_ALGORITHM}/g" \
        -e "s/@ALTERNATIVE_ALGORITHM_NUMBER@/${ALTERNATIVE_ALGORITHM_NUMBER}/g" \
        -e "s/@ALTERNATIVE_BITS@/${ALTERNATIVE_BITS}/g" \
        -e "s/@DEFAULT_HMAC@/${DEFAULT_HMAC}/g" \
        -e "s/@DISABLED_ALGORITHM@/${DISABLED_ALGORITHM}/g" \
        -e "s/@DISABLED_ALGORITHM_NUMBER@/${DISABLED_ALGORITHM_NUMBER}/g" \
        -e "s/@DISABLED_BITS@/${DISABLED_BITS}/g" \
        $1 > $2
}