n2n/debian/init

#!/bin/sh
### BEGIN INIT INFO
# Provides:          n2n
# Required-Start:    $network $remote_fs $local_fs
# Required-Stop:     $remote_fs $local_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start or stop the n2n VPN
# Description:       This script controls the n2n VPN service.
#                    It is called from the boot, halt and reboot scripts.
#                    So far, only 1 PVN is supported by this script.
#                    More can be started via the command line.
### END INIT INFO
#
# Author: Rolf Leggewie <foss@rolf.leggewie.biz>

set -e

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC='n2n P2P VPN'
NAME=n2n
DAEMON=/usr/sbin/edge
DAEMON_ARGS=""             # Arguments to run the daemon with
#PIDFILE=/var/run/$NAME-edge.pid
SCRIPTNAME=/etc/init.d/$NAME

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

# Check config
if [ -z "$N2N_EDGE_CONFIG_DONE" ]
then
	echo "Warning: n2n VPN client is not configured, edit config file in /etc/default/$NAME." 1>&2
	exit 0
fi

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh
. /lib/lsb/init-functions

## Make sure /var/run/n2n exists.
#if [ ! -e /var/run/$NAME ] ; then
#	mkdir -p /var/run/$NAME
#	chown proxy:proxy /var/run/$NAME
#	chmod 755 /var/run/$NAME
#fi

# Function that starts the daemon/service
#
do_start()
{
	if [ -r /sys/class/net/edge0 ]; then
	 echo edge node is already running.
	 exit 0
	fi

	# Return
	#   0 if daemon has been started
	#   1 if daemon was already running
	#   2 if daemon could not be started
	start-stop-daemon --start --quiet --user nobody --exec $DAEMON --test > /dev/null \
		|| return 1
	export N2N_KEY
	start-stop-daemon --start --quiet --user nobody --exec $DAEMON -- \
		-f -a $N2N_IP -c $N2N_COMMUNITY -l $N2N_SUPERNODE \
		-u $(id -u nobody) -g $(id -g nobody) $DAEMON_ARGS \
		|| return 2
}

#
# Function that stops the daemon/service
#
do_stop()
{
	# Return
	#   0 if daemon has been stopped
	#   1 if daemon was already stopped
	#   2 if daemon could not be stopped
	#   other if a failure occurred
	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --user nobody --exec $DAEMON
	RETVAL="$?"
	[ "$RETVAL" = 2 ] && return 2
	# Wait for children to finish too if this is a daemon that forks
	# and if the daemon is only ever run from this initscript.
	# If the above conditions are not satisfied then add some other code
	# that waits for the process to drop all resources that could be
	# needed by services started subsequently.  A last resort is to
	# sleep for some time.
	start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
	[ "$?" = 2 ] && return 2
	# Many daemons don't delete their pidfiles when they exit.
	rm -f $PIDFILE
	return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
	#
	# If the daemon can reload its configuration without
	# restarting (for example, when it is sent a SIGHUP),
	# then implement that here.
	#
	start-stop-daemon --stop --signal 1 --quiet --name $NAME
	return 0
}

case "$1" in
  start)
	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC " "$NAME"
	do_start
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  stop)
	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
	do_stop
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  status)
	status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
	;;
  #reload|force-reload)
	#
	# If do_reload() is not implemented then leave this commented out
	# and leave 'force-reload' as an alias for 'restart'.
	#
	#log_daemon_msg "Reloading $DESC" "$NAME"
	#do_reload
	#log_end_msg $?
	#;;
  restart|force-reload)
	#
	# If the "reload" option is implemented then remove the
	# 'force-reload' alias
	#
	log_daemon_msg "Restarting $DESC" "$NAME"
	do_stop
	case "$?" in
	  0|1)
		do_start
		case "$?" in
			0) log_end_msg 0 ;;
			1) log_end_msg 1 ;; # Old process is still running
			*) log_end_msg 1 ;; # Failed to start
		esac
		;;
	  *)
		# Failed to stop
		log_end_msg 1
		;;
	esac
	;;
  *)
	N=/etc/init.d/$NAME
	#echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
	exit 3
	;;
esac

exit 0