#!/bin/bash

echo "Scanning available networks for your home WLAN connection..."

# The essid of my home wlan is "redbeard"
homenet=$(sudo /sbin/iwlist wlan0 scan |grep "ESSID:\"redbeard1\"")

# Housekeeping. You'll understand later.
if [ -e /home/james/Desktop/Success ]
then
	sudo rm /home/james/Desktop/Success
fi

if [ -e /home/james/Desktop/Failure ]
then
        sudo rm /home/james/Desktop/Failure
fi
		
if [ -z ${homenet} ]
then
	echo "Home network not detected, aborting..."
else
	echo "Connecting to ${homenet}, please wait..."

	if [ -e /var/run/dhcpcd-wlan0.pid ]
		then
			echo "Removing lockfile..."
			sudo rm /var/run/dhcpcd-wlan0.pid
		else
			echo "No dhcpc lock found, continuing..."
	fi

# When I used to use WEP encryption I had the next 3 lines uncommented...
	echo "Assigning WEP key to the card..."
	sudo /sbin/iwconfig wlan0 key "0101010101"
	echo "Key status:	$?"

	echo "Setting essid to \"redbeard1\""
	sudo /sbin/iwconfig wlan0 essid "redbeard1"
	echo "essid status:	 $?"

	echo "Obtaining IP address from dhcpcd..."
	sudo /sbin/dhcpcd wlan0

# This lets me know if the status/result of my script's execution
	if [ $? == "0" ]
		then
		sudo /sbin/ifconfig wlan0 >> /home/james/Desktop/Success
		else
		echo $(date) >> /home/james/Desktop/Failure
	fi
	echo "dhcpcd status:	$?"

fi