#!/bin/sh

scriptname=$0
DAEMON=${scriptname##*/rc.}
. /etc/init.d/modlibrc

mypidof() {
	ps -w | sed -n "/\/m[o]d\/etc\/${1}.conf/ s/^[ ]*\([0-9]*\)[ ].*/\1/ p"
}

config(){
	if [ -r "/tmp/flash/openvpn/own_${DAEMON}.conf" ]; then
		cp /tmp/flash/openvpn/own_${DAEMON}.conf /mod/etc/${DAEMON}.conf
	else
		modlib_config ${DAEMON} /mod/etc/${DAEMON}.conf
	fi
}

start() {
	cp -f /etc/resolv.conf /tmp/openvpn/etc
	cp -f /etc/TZ /tmp/openvpn/etc
	mknod -m 444 /tmp/openvpn/dev/urandom c 1 9 2>/dev/null
	for file in $(echo ${OPENVPN_FILES2CP#*#} | tr ';#' '\n\n'); do
		if [ ! -r $file ]; then # not a full path? Try to find a binary
			fullpath=$(which $file);
			[ ! x = x$fullpath ] && file=$fullpath
		fi
		if [ -r $file ]; then
			mkdir -p /tmp/openvpn${file%/*}
			cp -a $file /tmp/openvpn${file%/*}
		else
			echo "Copying files to chroot. File $file not found. Skipped"
		fi
	done

	trap 'echo -e "You may get some more hints by starting ${DAEMON} w/o \"--daemon\":\n\t$DAEMON --config /mod/etc/${DAEMON}.conf"' EXIT
	modlib_startdaemon ${DAEMON} --config /mod/etc/${DAEMON}.conf --writepid /var/run/${DAEMON}.pid --daemon
	trap - EXIT

	# if we have brctl, then try to add tap to "lan" if requestet (ignore errors)
	if [ $(which brctl) ] && TAP=$(grep "#Helperline" /mod/etc/${DAEMON}.conf | grep -o tap[0-9] ); then
		brctl addif lan $TAP 2> /dev/null
	fi
}


stop() {
	echo -n "Stopping ${DAEMON} ... "
	PID=$(mypidof $DAEMON)

	if [ -z "$PID" ]; then
		echo "not running."
		return 1
	fi

	kill $PID > /dev/null 2>&1
	exitval=$?

	if [ "$exitval" -eq 0 ]; then
		echo 'done.'
	else
		echo 'failed.'
		exit $exitval
	fi

	rm -f /var/run/${DAEMON}.pid
}


if [ ! -e /var/tmp/.openvpnfirstrun ]; then
	touch /var/tmp/.openvpnfirstrun
	/mod/etc/default.openvpn/openvpn_dynamic_conf
fi
[ -x /mod/sbin/$DAEMON ] || ln -s /usr/sbin/openvpn /mod/sbin/$DAEMON

case $1 in
	""|load)
		if [ "$DAEMON" = "openvpn" ]; then
			modreg cgi 'openvpn' 'OpenVPN'
			modreg daemon openvpn
			modreg extra openvpn '$(lang de:"Verbundene Clients" en:"Connected clients")' 2 "openvpn_clients"
			modreg file openvpn 'box_crt' 'Box Cert' 0 "box_crt"
			modreg file openvpn 'box_key' 'Private Key' 0 "box_key"
			modreg file openvpn 'ca_crt' 'CA Cert' 0 "ca_crt"
			modreg file openvpn 'crl_pem' 'CRL' 0 "crl_pem"
			modreg file openvpn 'dh_pem' 'DH Param' 0 "dh_pem"
			modreg file openvpn 'static_key' 'Static Key' 0 "static_key"
			modlib_add_user_and_group openvpn
			mkdir -p /tmp/openvpn/etc
			mkdir -p /tmp/openvpn/dev
			mkdir -p /tmp/flash/openvpn
		fi
		if [ ! -e "/tmp/flash/openvpn/static.key" ]; then
			echo -n "creating static.key ... "
			openvpn --genkey --secret /tmp/flash/openvpn/static.key
			/usr/bin/modsave flash >/dev/null
		fi
		d_BU="$DAEMON"
		as="${OPENVPN_AUTOSTART#*#}"
		for d in $(echo "openvpn${OPENVPN_CONFIG_NAMES#*DEFAULT#}" | sed 's/#/ openvpn_/g' ); do
			if [ "${as%%#*}" != "yes" ]; then
				echo "$d is disabled" 1>&2
			else
				DAEMON="$d"
				DAEMON_LONG_NAME=$DAEMON
				start
			fi
			as=${as#*#}
		done
		DAEMON="$d_BU"
		DAEMON_LONG_NAME=$DAEMON
		;;
	unload)
		stop
		if [ "$DAEMON" = "openvpn" ]; then
			for d in $(echo "${OPENVPN_CONFIG_NAMES#*DEFAULT#}" | sed 's/#/ openvpn_/g' ); do
					DAEMON="$d"
					DAEMON_LONG_NAME=$DAEMON
					stop
			done
			modunreg file openvpn
			modunreg daemon openvpn
			modunreg cgi openvpn
			modunreg extra openvpn
		fi
		;;
	start)
		modlib_start
		;;
	stop)
		stop
		;;
	restart)
		stop
		sleep 1
		start
		;;
	reload)
		if [ -r "/var/run/${DAEMON}.pid" ]; then
			kill -HUP $(cat /var/run/${DAEMON}.pid)
		fi
		;;
	status)
		if [ -z "$(mypidof $DAEMON)" ]; then
			echo 'stopped'
		else
			echo 'running'
		fi
		;;
	*)
		echo "Usage: $0 [load|unload|start|stop|restart|reload|status]" 1>&2
		exit 1
		;;

esac

exit 0