#!/bin/bash

# search for possible wireless device
# if more then one let user make selection
# give warning with choice to exit when no selection has been made.

# search for wireless networks
# show and let user make selection
# give warning with choice to exit when no selection has been made.

# ask for password
# repeat when it does not work
# give warning with choice to exit when no selection has been made.

sudo ifconfig wlan0 up

open=$(sudo iwlist wlan0 scanning | grep ESSID* | zenity --list --title "Wireless networks in range" --text "Select your wireless network:" --width 800 --height 600 --column "Files")

password=$(zenity --entry --title "wireless password" --text "Enter Wireless password:" --width=200 --height=100)

sudo /etc/init.d/networking stop

[ -e /etc/network/interfaces ] && sudo mv --verbose /etc/network/interfaces /etc/network/interfaces.backup
sudo touch /etc/network/interfaces

echo auto lo | sudo tee -a /etc/network/interfaces
echo iface lo inet loopback | sudo tee -a /etc/network/interfaces

echo   | sudo tee -a /etc/network/interfaces
echo auto wlan0 | sudo tee -a /etc/network/interfaces
echo iface wlan0 inet dhcp | sudo tee -a /etc/network/interfaces
echo pre-up /sbin/wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf | sudo tee -a /etc/network/interfaces
echo post-down killall -q wpa_supplicant | sudo tee -a /etc/network/interfaces
echo   | sudo tee -a /etc/network/interfaces

open=${open/ESSID:/}
open=${open/\"/}
open=${open/\"/}
open=${open/                    /}
echo wpa_passphrase $open $password
wpa_passphrase "$open"  "$password" > $HOME/.wpa-supplicant-home.conf

sudo rm --verbose /etc/wpa_supplicant.conf
sudo ln --symbolic --verbose $HOME/.wpa-supplicant-home.conf /etc/wpa_supplicant.conf

sudo /etc/init.d/networking restart

exit