#!/sbin/openrc-run
# Copyright 1999-2016 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

description="NSD is an authoritative-only, high performance, open source name server"
extra_commands="configtest patch"

# these can be overridden in /etc/conf.d/nsd if necessary
NSD_CONFIG="${NSD_CONFIG:-/etc/nsd/nsd.conf}"
NSD_BINARY="${NSD_BINARY:-/usr/sbin/nsd}"
NSD_CHECKCONF="${NSD_CHECKCONF:-/usr/sbin/nsd-checkconf}"
NSDC_BINARY="${NSDC_BINARY:-/usr/sbin/nsdc}"

depend() {
	need net
	use logger
}

configtest() {
	ebegin "Checking ${SVCNAME} configuration"
	checkconfig
	eend $?
}

checkconfig() {
	if ! test -e "${NSD_CONFIG}"; then
		eerror "You need to create an appropriate config file."
		eerror "An example can be found in /etc/nsd/nsd.conf.sample"
		return 1
	elif ! "${NSD_CHECKCONF}" "${NSD_CONFIG}"; then
		eerror "You have errors in your configfile (${NSD_CONFIG})"
		return $?
	fi
	return 0
}

patch() {
	local difffile=$(${NSD_CHECKCONF} -o difffile "${NSD_CONFIG}")
	if ! test -s "${difffile}"; then
		# no difffile found or difffile empty, so no patching required
		return 0
	fi
	ebegin "Patching NSD zone files"
	"${NSDC_BINARY}" patch >/dev/null
	eend $?
}

start() {
	ebegin "Starting NSD"
	checkconfig || return $?
	local pidfile=$("${NSD_CHECKCONF}" -o pidfile "${NSD_CONFIG}")
	checkpath --directory --owner nsd:nsd $(dirname "${pidfile}")
	start-stop-daemon --start --pidfile "${pidfile}" \
		--exec "${NSD_BINARY}" -- -c "${NSD_CONFIG}"
	eend $?
}

stop() {
	ebegin "Stopping NSD"
	checkconfig || return $?
	local pidfile=$("${NSD_CHECKCONF}" -o pidfile "${NSD_CONFIG}")
	patch || return $?
	start-stop-daemon --stop --pidfile "${pidfile}"
	eend $?
}