#! /bin/sh
### BEGIN INIT INFO
# Provides:          wpa-connect
# Required-Start:    networking
# Required-Stop:     networking
# Default-Start:     2 3 4 5
# Default-Stop:      S 0 1 6
# Short-Description: Connects a wireless interface to an access point using WPA
# Description:       This file should be used to construct scripts to be
#                    placed in /etc/init.d.
### END INIT INFO

# Author: David Cullen <dcullen@kerneldriver.org>
#
# Please remove the "Author" lines above and replace them
# with your own name if you copy and modify this script.

# Do NOT "set -e"

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/usr/sbin:/usr/bin:/sbin:/bin
INTERFACE="eth1"
DESC="wpa-connect"
NAME="${DESC}-${INTERFACE}"
LOGFILE="/var/log/wpa-connect.log"

# Load the VERBOSE setting and other rcS variables
[ -f /etc/default/rcS ] && . /etc/default/rcS

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

#
# Function that starts the daemon/service
#
wpa_connect()
{
	# Return
	#   0 if daemon has been started
	#   1 if daemon was already running
	#   2 if daemon could not be started

	echo "Connecting to access point using WPA..." >> ${LOGFILE}
	if ! /sbin/wpa_supplicant -Dwext -i${INTERFACE} -c/etc/wpa_supplicant/wpa_supplicant.conf -B >> ${LOGFILE} 2>&1 ; then
		echo "Could not configure WPA for ${INTERFACE}" >> ${LOGFILE}
		return 1;
	fi
	echo "Done." >> ${LOGFILE}

	echo "Starting DHCP..." >> ${LOGFILE}
	if ! dhclient ${INTERFACE} >> ${LOGFILE} 2>&1 ; then
		echo "Could start DHCP for ${INTERFACE}" >> ${LOGFILE}
		return 1;
	fi
	echo "Done." >> ${LOGFILE}
	return $RETVAL
}

wpa_disconnect()
{
	# 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

	echo "Stopping DHCP..." >> ${LOGFILE}
	if ! skill dhclient >> ${LOGFILE} 2>&1 ; then
		echo "Could not stop DHCP" >> ${LOGFILE}
		return 1;
	fi
	echo "Done." >> ${LOGFILE}

	echo "Disconnecting WPA..." >> ${LOGFILE}
	if ! skill wpa_supplicant >> ${LOGFILE} 2>&1 ; then
		echo "Could not disconnect WPA" >> ${LOGFILE}
		return 1;
	fi
	echo "Done." >> ${LOGFILE}
	return $RETVAL
}

start()
{
        log_begin_msg "Connecting ${INTERFACE} to access point using WPA..."
        wpa_connect
	RETVAL=$?
	[ $RETVAL -eq 0 ] && log_end_msg 0 || log_end_msg 1
	echo
	return $RETVAL
}

stop()
{
        log_begin_msg "Disconnection  ${INTERFACE} from access point using WPA..."
	wpa_disconnect
	RETVAL=$?
	[ $RETVAL -eq 0 ] && log_end_msg 0 || log_end_msg 1
	echo
	return $RETVAL
}

case "$1" in
  start)
	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
	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"
	stop
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  #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"
	stop
	case "$?" in
	  0|1)
		start
		case "$?" 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
	;;
  *)
	#echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
	echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload}" >&2
	exit 3
	;;
esac
:

ctrl_interface=/var/run/wpa_supplicant
network={
    ssid="Your SSID"
    psk="XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
    key_mgmt=WPA-PSK
    proto=WPA
    pairwise=TKIP
    group=TKIP
}