#!/bin/sh

export PATH=/sbin:/bin:/usr/sbin:/usr/bin:/mod/sbin:/mod/bin:/mod/usr/sbin:/mod/usr/bin
export LD_LIBRARY_PATH=/mod/lib

DAEMON=pptpd
PPPD=pppd

case "$1" in
	""|load|start|restart)
		if [ ! -r "/mod/etc/conf/$DAEMON.cfg" ]; then
			echo "Error[$DAEMON]: not configured" 1>&2
			exit 1
		fi

		. /mod/etc/conf/$DAEMON.cfg
		;;
esac

start() {
	echo -n 'Starting pptpd ...'
	set -o noglob

	rm -f /mod/etc/ppp/ip-up
	rm -f /mod/etc/ppp/ip-down
	[ -x "/tmp/flash/ppp/pppd_ip-up" ] && /tmp/flash/ppp/pppd_ip-up > /mod/etc/ppp/ip-up
	[ ! -e "/mod/etc/ppp/ip-up" ] && /etc/default.${PPPD}/pppd_ip-up > /mod/etc/ppp/ip-up
	[ -x "/tmp/flash/ppp/pppd_ip-down" ] && /tmp/flash/ppp/pppd_ip-down > /mod/etc/ppp/ip-down
	[ ! -e "/mod/etc/ppp/ip-down" ] && /etc/default.${PPPD}/pppd_ip-down > /mod/etc/ppp/ip-down
	chmod 755 /mod/etc/ppp/ip-up
	chmod 755 /mod/etc/ppp/ip-down

	modprobe arc4
	modprobe sha1
	modprobe ppp_generic
	modprobe ppp_async
	modprobe ppp_deflate
	modprobe ppp_mppe_mppc

	$DAEMON -c /etc/ppp/$DAEMON.conf
	exitval=$?
	if [ "$exitval" -eq 0 ]; then
		echo 'done.'
	else
		echo 'failed.'
		exit $exitval
	fi
}

stop() {
	echo -n 'Stopping pptpd ...'

	kill $(ps|grep pptpd|grep -v grep|grep -v "rc.pp"|grep -v "pppd"|sed 's/^ //g'|cut -f1 -d" ")
	exitval=$?
	
	if [ "$exitval" -eq 0 ]; then
		echo 'done.'
	else
		echo 'failed.'
		exit $exitval
	fi
}

case "$1" in
	""|load)
		[ ! -d "/tmp/flash/ppp" ] && mkdir -p /tmp/flash/ppp
		[ ! -d "/mod/etc/ppp" ] && mkdir -p /mod/etc/ppp

		[ ! -e "/tmp/flash/ppp/options.pptpd" ] && /etc/default.${DAEMON}/pptpd_options > /tmp/flash/ppp/options.pptpd
		[ ! -e "/tmp/flash/ppp/pptpd.conf" ] && /etc/default.${DAEMON}/pptpd_conf > /tmp/flash/ppp/pptpd.conf

		[ -e "/tmp/flash/ppp/options.pptpd" ] && ln -s /tmp/flash/ppp/options.pptpd /mod/etc/ppp/options.pptpd
		[ -e "/tmp/flash/ppp/pptpd.conf" ] && ln -s /tmp/flash/ppp/pptpd.conf /mod/etc/ppp/pptpd.conf

		modreg cgi 'pptpd' 'PPTPD'

		deffile='/mod/etc/default.pptpd/pptpd_options.def'
		[ -r "/tmp/flash/pptpd_options.def" ] && deffile='/tmp/flash/pptpd_options.def'
		modreg file 'pptpd_options' 'PPTPD: options.pptpd' 0 "$deffile"

		deffile='/mod/etc/default.pptpd/pptpd_conf.def'
		[ -r "/tmp/flash/pptpd_conf.def" ] && deffile='/tmp/flash/pptpd_conf.def'
		modreg file 'pptpd_conf' 'PPTPD: pptpd.conf' 0 "$deffile"

		if [ "$PPTPD_ENABLED" != "yes" ]; then
			echo "$DAEMON is disabled" 1>&2
			exit 1;
		fi

		start
		;;
	unload)
		stop
		modunreg cgi 'pptpd'
		modunreg file 'pptpd_options'
		modunreg file 'pptpd_conf'
		;;
	start)
		start
		;;
	stop)
		stop
		;;
	restart)
		stop
		sleep 1
		start
		;;
	status)
		if [ -z "$(pidof "$DAEMON")" ]; then
			echo 'stopped'
		else
			echo 'running'
		fi
		;;
	*)
		echo "Usage: $0 [load|unload|start|stop|restart|status]" 1>&2
		exit 1
		;;
esac

exit 0