EWOC UPDATE

#! /bin/bash
# ewoc-z2sid.sh Jan-05-2011 aka Easy Wifi Configurator -- EWoC
# By Russell K. Davis with input from jaldher, g8787/geordy, Ray Dios Haque, pcurtis, wicknix, brianith, lfod, and mozzwald
backtitle="Easy Wifi Configurator -- EWoC"

wifidevice=wlan0

ifconfig "$wifidevice" up > /dev/null 2>&1

if [ -n "`pidof wpa_supplicant`" ]; then
    kill `pidof wpa_supplicant`
fi

if [ -n "`pidof udhcpc`" ]; then
    kill `pidof udhcpc`
fi

current=1
if [ -e /etc/wpa.conf ]; then
    #currentssid=`grep ssid /etc/wpa.conf | sed -e 's/.*ssid="//' -e 's/"//'`
    dialog --backtitle "$backtitle" --title "wpa.conf" --yesno "Use previously saved access points?" 6 0
    current=$?
fi

if [ $current -ne 0 ]; then
    iwlist $wifidevice scan | grep 'ESSID' | sed -e 's/.*ESSID:"\([^"]\+\)".*/  \1/' > /tmp/ap_list.txt
#todo: needs rewriting to use --file
    echo "dialog --nocancel --backtitle \"$backtitle\" \\" > /tmp/choose_ap.sh
    echo "--title \"Choose SSID\" \\" >> /tmp/choose_ap.sh
    echo "--radiolist \"\" \\" >> /tmp/choose_ap.sh

    LINES=`wc -l < /tmp/ap_list.txt`
    LINES=$((${LINES}+1))
    echo "8 30 ${LINES} \\" >> /tmp/choose_ap.sh
    CNT=1
    for LINE in `cat /tmp/ap_list.txt`
    do
        echo "${CNT} $LINE off \\" >> /tmp/choose_ap.sh
            CNT=$((${CNT}+1))
        done
        echo "${CNT} NAMED\ SSID on 2>/tmp/ssidnumber.ans" >>/tmp/choose_ap.sh

    chmod 777 /tmp/choose_ap.sh
        . /tmp/choose_ap.sh

        CHOOSENSSID=`cat /tmp/ssidnumber.ans`

        if [ $CHOOSENSSID == $LINES ]; then
        dialog --nocancel --ok-label "Submit" \
        --backtitle "$backtitle" \
        --title "SSID" \
        --inputbox ""  8 30 2>/tmp/ssid.ans
    else
        count=1
        while read ssid; do
            if [ $count = $CHOOSENSSID ]; then
                echo "`echo $ssid | sed -e 's/^[ \t]*//'`" >/tmp/ssid.ans
            fi
            let count=$count+1
        done </tmp/ap_list.txt

        #cat /tmp/ap_list.txt | gawk -v SSID=$CHOOSENSSID '{ if (NR==SSID) print $0 }' | sed -e 's/^[ \t]*//' >/tmp/ssid.ans
    fi

    dialog --nocancel --backtitle "$backtitle" \
          --title "Cipher Method" \
          --radiolist "" \
          8 30 4 \
          1 "WPA/WPA2" on \
          2 "WEP (hex)" off \
          3 "WEP (ascii)" off \
          4 "None" off 2>/tmp/cipher.ans


    SSID=`cat /tmp/ssid.ans`
    ENCRYPTION=`cat /tmp/cipher.ans`

    case $ENCRYPTION in
        '1')
            dialog --nocancel --ok-label "Submit" \
                --backtitle "$backtitle" \
                    --title "Passphrase" \
                    --inputbox ""  8 30 2>/tmp/passphrase.ans
                    PASSPHRASE=`cat /tmp/passphrase.ans`
            wpa_passphrase $SSID $PASSPHRASE >>/etc/wpa.conf
            wpa_supplicant -B -i$wifidevice -c /etc/wpa.conf
        ;;
        '2')
            dialog --nocancel --ok-label "Submit" \
            --backtitle "$backtitle" \
            --title "Passphrase" \
            --inputbox "WEP key (hex)"  8 30 2>/tmp/passphrase.ans
            PASSPHRASE=`cat /tmp/passphrase.ans`

                    echo "network={
                            ssid=\"$SSID\"
                            key_mgmt=NONE
                            wep_key0=$PASSPHRASE
                            }" >> /etc/wpa.conf
                wpa_supplicant -B -i$wifidevice -c /etc/wpa.conf
        ;;
        '3')
            dialog --nocancel --ok-label "Submit" \
              --backtitle "$backtitle" \
              --title "Passphrase" \
              --inputbox "WEP key (ascii)"  8 30 2>/tmp/passphrase.ans
            PASSPHRASE=`cat /tmp/passphrase.ans`

            echo "network={
                       ssid=\"$SSID\"
                       key_mgmt=NONE
                       wep_key0=\"$PASSPHRASE\"
                       }" >> /etc/wpa.conf
                wpa_supplicant -B -i$wifidevice -c /etc/wpa.conf
        ;;
        '4')
            iwconfig wlan0 mode managed
            iwconfig wlan0 essid \"$SSID\"
            iwconfig wlan0 key OPEN
            iwconfig wlan0 channel auto


        ;;
    esac
fi

clear
udhcpc -i $wifidevice -n