#!/bin/sh

DAEMON=isc-dhcp
DAEMON_BIN=isc-dhcpd
DAEMON_CONFIG=/tmp/flash/${DAEMON}/${DAEMON_BIN}.conf
PID_FILE=/var/run/${DAEMON}/${DAEMON_BIN}.pid
LEASES_FILE=/var/tmp/${DAEMON_BIN}.leases
USER_GROUP=nobody
. /etc/init.d/modlibrc

[ -r /etc/options.cfg ] && . /etc/options.cfg

if [ "$ISC_DHCP_MULTID" != "yes" -o "$FREETZ_AVMDAEMON_DISABLE_DNS" == "y" ]; then
	nomultid=y
else
	[ "$(/etc/init.d/rc.multid status)" != "running" ] && nomultid=y
fi

startdaemon_pre() {
	[ "$nomultid" != "y" ] && /etc/init.d/rc.multid stop >/dev/null || true
}

start() {
	touch $LEASES_FILE
	chown $USER_GROUP:$USER_GROUP $LEASES_FILE

	local OPTIONS="$ISC_DHCP_CMDLINE -cf $DAEMON_CONFIG -q -user $USER_GROUP -group $USER_GROUP -pf $PID_FILE -lf $LEASES_FILE"
	modlib_startdaemon $DAEMON_BIN $OPTIONS
}

startdaemon_post() {
	[ "$nomultid" != "y" ] && /etc/init.d/rc.multid start >/dev/null || true
}

stop_pre() {
	[ "$nomultid" != "y" ] && /etc/init.d/rc.multid stop >/dev/null
}

stop_post() {
	[ "$nomultid" != "y" ] && /etc/init.d/rc.multid start >/dev/null
}

case $1 in
	""|load|multid)
		if [ "$1" == "multid" ]; then
			[ "$ISC_DHCP_WRAPPER" != "yes" -o "$EXTERNAL_FREETZ_PACKAGE_ISC_DHCP" == "y" ] && exit
		else
			[ "$ISC_DHCP_WRAPPER" == "yes" -a "$EXTERNAL_FREETZ_PACKAGE_ISC_DHCP" != "y" ] && exit
		fi

		mkdir -p ${DAEMON_CONFIG%/*}
		[ ! -e "$DAEMON_CONFIG" ] && /mod/etc/default.$DAEMON/${DAEMON_BIN}_conf > $DAEMON_CONFIG

		modlib_add_user_and_group $USER_GROUP
		mkdir -p ${PID_FILE%/*}
		chown $USER_GROUP:$USER_GROUP ${PID_FILE%/*}

		modreg cgi "$DAEMON" "isc-dhcp"
		modreg daemon $DAEMON
		modreg file $DAEMON dhcpd-conf '$(lang de:"Konfiguration" en:"Configuration")' 0 isc-dhcpd_conf

		modlib_start $ISC_DHCP_ENABLED
		;;
	unload)
		modunreg file $DAEMON
		modunreg daemon $DAEMON
		modunreg cgi $DAEMON
		modlib_stop
		;;
	start)
		modlib_start
		;;
	stop)
		modlib_stop
		;;
	restart)
		if [ "$FREETZ_AVMDAEMON_DISABLE_DNS" != "y" ]; then
			modlib_check_running && nomultid=y
		fi
		modlib_restart
		;;
	reload)
		modlib_reload
		;;
	status)
		modlib_status
		;;
	*)
		echo "Usage: $0 [load|unload|start|stop|restart|reload|status]" 1>&2
		exit 1
		;;
esac

exit 0