#!/bin/sh

DAEMON=dnsmasq
PID_FILE=/var/run/$DAEMON/$DAEMON.pid
. /etc/init.d/modlibrc

DAEMON_USER=nobody
DAEMON_GROUP=nobody

[ "$(/etc/init.d/rc.multid status)" != "running" -o "$DNSMASQ_MULTID_RESTART" != "yes" ] && nomultid=y

config() {
	modlib_config
}

start() {
	[ "$nomultid" != "y" ] && /etc/init.d/rc.multid stop >/dev/null
	local OPTIONS="--pid-file=$PID_FILE $DNSMASQ_OPTIONS"
	[ "$DNSMASQ_DNS_PORT" ] && OPTIONS="$OPTIONS -p $DNSMASQ_DNS_PORT"
	modlib_startdaemon $DAEMON $OPTIONS
	[ "$nomultid" != "y" ] && /etc/init.d/rc.multid start >/dev/null

	if [ ! -L "/var/flash/multid.leases" -a "$DNSMASQ_DHCP" = "yes" ]; then
		rm -f /var/flash/multid.leases
		touch /var/tmp/multid.leases
		ln -s /var/tmp/multid.leases /var/flash/multid.leases
	fi

	# this could pose problems when a client comes too fast
	local lease
	for lease in /var/tmp/multid.leases /var/tmp/dnsmasq.leases; do
		if [ -f $lease ]; then
			chmod 0664 $lease
			chown root:nobody $lease
		fi
	done
}

stop() {
	[ "$nomultid" != "y" ] && /etc/init.d/rc.multid stop >/dev/null
	kill $(cat $PID_FILE) 2> /dev/null
	[ "$nomultid" != "y" ] && /etc/init.d/rc.multid start >/dev/null

	if [ -L "/var/flash/multid.leases" ]; then
		major=$(grep tffs /proc/devices)
		rm -f /var/flash/multid.leases
		mknod /var/flash/multid.leases c ${major%%tffs} $((0x70))
	fi
}

case $1 in
	""|load|multid)
		if [ "$1" == "multid" ]; then
			[ "$DNSMASQ_WRAPPER" != "yes" ] && exit
		else
			[ "$DNSMASQ_WRAPPER" == "yes" ] && exit
		fi

		mkdir -p "/tmp/flash/${DAEMON}"
		[ -r "/tmp/flash/${DAEMON}.extra" ] && mv "/tmp/flash/${DAEMON}.extra" "/tmp/flash/${DAEMON}/${DAEMON}.extra"

		modreg cgi 'dnsmasq' 'Dnsmasq'
		modreg daemon $DAEMON
		modreg file dnsmasq extra 'extra' 0 dnsmasq_extra

		modlib_addgroup $DAEMON_GROUP
		modlib_adduser $DAEMON_USER -s /bin/false -D -S -H -G $DAEMON_GROUP -g $DAEMON_GROUP
		mkdir -p ${PID_FILE%/*}
		chown $DAEMON_USER:$DAEMON_GROUP ${PID_FILE%/*}

		modlib_start $DNSMASQ_ENABLED
		;;
	unload)
		modunreg file dnsmasq
		modunreg daemon $DAEMON
		modunreg cgi dnsmasq
		modlib_stop
		;;
	start)
		modlib_start
		;;
	stop)
		modlib_stop
		;;
	restart)
		modlib_check_running && nomultid=y
		modlib_restart
		;;
	status)
		modlib_status
		;;
	*)
		echo "Usage: $0 [load|unload|start|stop|restart|status]" 1>&2
		exit 1
		;;
esac

exit 0