#!/bin/sh
#
# description:  This small start/stop-script will let you control 
#               your wpa_supplicant application to handle its correct
#               usage.
# @name:        wpa_supplicant.sh
# @author:      Thomas Pischulski 
# @expanded:    Alexander Hagenah 
# @created:     04/02/2008


# VARIABLES
# Edit them to match your system settings
DEVICE="wlan0"
DRIVER="wext"
CONFIG="/etc/wpa_supplicant/wpa_supplicant.conf"
USERID=`id -u`
ANSWER=""


if [ $USERID != 0 ]; then
        echo "You're not root"
        exit 0

else
        case "$1" in
                "start")
                        WPAPID=`pidof wpa_supplicant`
                        if [ $? -eq 0 ]; then
                                echo "wpa_supplicant process still running."
                                echo "Kill it? [y/n] "
                                read ANSWER

                                case "$ANSWER" in

                                        "y"|"Y") 
                                                kill -9 $WPAPID
                                        ;;

                                        "n"|"N")
                                                echo "Could not start wpa_supplicant because another"
                                                echo "process is still running. Exiting.."
                                                exit 0
                                        ;;

                                        *)
                                                echo "Answer not allowed. Exiting.."
                                                exit 0
                                esac
                        fi

                        ifconfig $DEVICE up
                        wpa_supplicant -dd -B -c $CONFIG -i $DEVICE -D $DRIVER
                        dhclient $DEVICE
                ;;

                "stop")
                        ifconfig $DEVICE down
                        killall wpa_supplicant
                ;;

                *) echo "No argument given. Usage: wlan_tu (start|stop)";
        esac
fi