#!/bin/bash

# A small utility to easily connect to the wireless networks that I
# use frequently.
# Version 0.1.1.
# Originally written 23-July-2006.
# Last modified 24-July-2006.
# Michael V. De Palatis <mvd@gatech.edu>
# You may redistribute this under the terms of the GNU GPL v. 2.

# Which device is your wirless card?
DEVICE="eth1"

# Connect to the passed network.
function connect {
    if [[ $2 == "" ]]; then
	sudo iwconfig $DEVICE essid $1
	sudo dhclient $DEVICE
    else
	sudo iwconfig $DEVICE essid $1 key $2
	sudo dhclient $DEVICE
    fi
}

# Network and WEP key arrays.
# Add your networks here.
declare -a NETWORKS
declare -a KEYS

NETWORKS[0]="utexas"
KEYS[0]=""

NETWORKS[1]="canus"
KEYS[1]=yourkeygoeshere

# If no parameters were passed, display the networks.
if [[ ${#*} = 0 ]]; then
    echo "What wireless network do you want?"
    echo "Available networks are: ${NETWORKS[*]}"
    exit
fi

# Connect to the specified network.
i=0
while [[ $i < ${#NETWORKS[@]} ]]; do
    if [[ ${NETWORKS[$i]} = $1 ]]; then
	connect ${NETWORKS[$i]} ${KEYS[$i]}
	exit
    fi
    ((i++))
done
echo "Invalid network."