#!/sbin/openrc-run
# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

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

name="PowerDNS Authoritative Server"
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=${PDNS_CONFIGDIR} --socket-dir=${PDNS_SOCKETDIR}"
command_args_foreground="--daemon=no"
command_args_background="--daemon=yes"
yesno ${rc_verbose} || command_args_background="${command_args_background} >/dev/null 2>&1"

if [ "${RC_SVCNAME}" != "pdns" ]; then
	PDNS_INSTANCE="${RC_SVCNAME#pdns[.-]}"
	name="${name} (${PDNS_INSTANCE})"
	command_args="${command_args} --config-name=${PDNS_INSTANCE}"
	pidfile="${PDNS_SOCKETDIR}/pdns-${PDNS_INSTANCE}.pid"
else
	pidfile="${PDNS_SOCKETDIR}/pdns.pid"
fi

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 ))
		echo -n .
	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
}