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#!/sbin/openrc-run
# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

PDNS_CONFIGDIR="${PDNS_CONFIGDIR:-/etc/powerdns}"
PDNS_STOP_TIMEOUT="${PDNS_STOP_TIMEOUT:-10}"

[ "${RC_SVCNAME}" != "pdns" ] && PDNS_INSTANCE="${RC_SVCNAME#pdns[.-]}" || PDNS_INSTANCE=""

PDNS_CONFIG="${PDNS_CONFIGDIR}/pdns${PDNS_INSTANCE:+-${PDNS_INSTANCE}}.conf"
PDNS_CHROOTDIR="$( awk -F = '$1 == "chroot" { print $2 }' "${PDNS_CONFIG}" )"
PDNS_SOCKETDIR="$( awk -F = '$1 == "socket-dir" { print $2 }' "${PDNS_CONFIG}" )"
[ -z "${PDNS_SOCKETDIR}" -a -z "${PDNS_CHROOTDIR}" ] && PDNS_SOCKETDIR="/var/run/pdns"

name="PowerDNS Authoritative Server${PDNS_INSTANCE:+ (${PDNS_INSTANCE})}"
description="Authoritative name server"

extra_started_commands="dump ping"
extra_stopped_commands="monitor"
description_dump="Dumps all statistic variables"
description_ping="Ping the PowerDNS instance"
description_monitor="Starts in foreground with logging and console enabled"

command="/usr/sbin/pdns_server"
command_args="--config-dir=${PDNS_CONFIGDIR}${PDNS_INSTANCE:+ --config-name=${PDNS_INSTANCE}} --write-pid=yes"
command_args_foreground="--daemon=no"
command_args_background="--daemon=yes"
yesno ${rc_verbose} || command_args_background="${command_args_background} >/dev/null 2>&1"

pidfile="${PDNS_CHROOTDIR}/${PDNS_SOCKETDIR}/pdns${PDNS_INSTANCE:+-${PDNS_INSTANCE}}.pid"

control_command="/usr/bin/pdns_control"
control_command_args="${command_args}"

depend() {
	need net
	use mysql postgresql
}

status() {
	default_status || return
	_ping || return 32
}

stop() {
	default_stop || return
	_ping || return 0
	wait_for_stop
}

wait_for_stop() {
	einfon "Waiting for ${name} to stop"

	local timeout="${PDNS_STOP_TIMEOUT}"
	while [ "${timeout}" -gt 0 ]; do
		sleep 1
		if ! _ping; then
			echo
			return 0
		fi
		: $(( timeout -= 1 ))
		printf .
	done

	echo
	return 1
}

dump() {
	einfo "Dumping ${name} variables"
	${control_command} ${control_command_args} list
}

_ping() {
	${control_command} ${control_command_args} rping >/dev/null 2>&1
}

ping() {
	ebegin "Pinging ${name}"
	_ping
	eend $?
}

monitor() {
	einfo "Starting ${name} in monitor mode"

	echo
	echo '************************************************'
	echo '* Use "QUIT" or Ctrl-C to end monitoring mode! *'
	echo '************************************************'
	echo

	${command} \
		${command_args} \
		${command_args_foreground} \
		--guardian=no \
		--control-console=yes \
		--loglevel=9 \
		--log-dns-details=yes \
		--query-logging=yes
	return 0
}