wpa_connect2.3

#!/bin/bash

#v2.3
[ -z "$1" -o -z "$2" ] && echo "w_iface in_essid/last/down/hidden" && exit 0

wpa_config_dir="$HOME/.config/wpa_supplicant"
wpa_config="$HOME/.config/wpa_supplicant/wpa_supplicant.conf"
last_ssid=$(cat $wpa_config | grep ssid=\" | awk -F'=' '{print $2}')

case $2 in
    down)
        echo " "
        echo "$last_ssid: Disconnecting..."
        echo " "
        fsudo -c | sudo -S -p '' pkill wpa_supplicant
        sudo dhclient $1 -x
        sudo ifconfig $1 down
        sleep 1
        exit 0
        ;;
    last)
        echo " "
        echo "$last_ssid: Connecting..."
        echo " "
        fsudo -c | sudo -S -p '' dhclient $1 -x
        sudo pkill wpa_supplicant
        sudo ifconfig $1 down
        sudo ifconfig $1 up
        if [[ -z `cat /etc/network/interfaces | grep $1` ]]; then
            sudo wpa_supplicant -B -Dwext -i $1 -c "$wpa_config" &>/dev/null
            sudo dhclient -1 $1
            if [ $? -eq 0 ]; then
                echo "Success"
                sleep 1
            else
                echo "Fail"
                sleep 1
            fi
        else
            sudo ifup $1
        fi
        exit 0
        ;;
    hidden)
        echo " "
        echo "Hidden network..."
        echo " "
        fsudo -c | sudo -S -p '' dhclient $1 -x
        sudo pkill wpa_supplicant
        sudo ifconfig $1 down
        sudo ifconfig $1 up
        echo -n "Enter SSID: "
        read essid
        channel="auto"
        mode="managed"
        while true; do
            read -r -s -p "$essid: Enter password: " key
            if [ ${#key} -lt 8 ] || [ ${#key} -gt 32 ]; then
                echo "The password must be 8-32 characters"
                :
            else
                break
            fi
        done
        skey=$(wpa_passphrase "$essid" $key 2>/dev/null | sed -n 's/^[ \t]psk=//gp')
        echo "ctrl_interface=/var/run/wpa_supplicant
ap_scan=1
network={
ssid=\"$essid\"
scan_ssid=1
proto=WPA RSN
key_mgmt=WPA-PSK
pairwise=CCMP TKIP
group=CCMP TKIP
psk=$skey
}" > "$wpa_config"
        if [[ -z `cat /etc/network/interfaces | grep $1` ]]; then
            sudo wpa_supplicant -B -Dwext -i $1 -c "$wpa_config"
            sudo dhclient $1
            if [ $? -eq 0 ]; then
                echo "Success"
                sleep 1
            else
                echo "Fail"
                sleep 1
            fi
        else
            sudo ifup $1
        fi
        exit 0
        ;;
    *)
        md5name=$(echo -n $2 | md5sum | cut -d" " -f1)
        fsudo -c | sudo -S -p '' dhclient $1 -x
        sudo pkill wpa_supplicant
        sudo dhclient -r
        sudo ifconfig $1 up
        cell=$(echo $2 | awk -F"=" '{print $1}')
        essid=$(echo $2 | awk -F"=" '{print $2}')
        if [[ -z `find "$wpa_config_dir" -name "$md5name"` ]]; then
            echo " "
            echo "$essid: Connecting..."
            echo " "
            scan_parms="$(sudo iwlist $1 scan)"
            scan_parms=$(echo "$scan_parms" | sed -ne "/Cell $cell/,/Cell/ p" | sed 's/^[ \t]*//')
            channel=$(echo "$scan_parms" | grep Channel: | sed 's/.*Channel://g')
            pairwise=$(echo "$scan_parms" | grep -m 1 Pairwise | sed 's/.* : //g')
            group=$(echo "$scan_parms" | grep -m 1 Group | sed 's/.* : //g')
            mode=$(echo "$scan_parms" | grep Mode | sed 's/.*Mode://g')
            if [[ "$mode" == "Master" ]]; then
                mode="managed"
            else
                echo "Cannot connect"
                sleep 2
                exit
            fi
            key=$(echo "$scan_parms" | grep key: | sed 's/.*key://g')
            if [[ $key == "on" ]]; then
                while true; do
                    read -r -s -p "$essid: Enter password: " key
                    if [ ${#key} -lt 8 ] || [ ${#key} -gt 32 ]; then
                        echo "The password must be 8-32 characters"
                        :
                    else
                        break
                    fi
                done
            fi
            skey=$(wpa_passphrase "$essid" $key 2>/dev/null | sed -n 's/^[ \t]psk=//gp')
            IE=$(echo "$scan_parms" | grep WPA | sed 's/.*: //g')
            if [[ -n "$IE" ]]; then
                echo "ctrl_interface=/var/run/wpa_supplicant
ap_scan=1
network={
ssid=\"$essid\"
scan_ssid=0
proto=WPA RSN
key_mgmt=WPA-PSK
pairwise=$pairwise
group=$group
psk=$skey
}" > "$wpa_config"
                if [[ -z `cat /etc/network/interfaces | grep $1` ]]; then
                    sudo wpa_supplicant -B -Dwext -i $1 -c "$wpa_config" &>/dev/null
                    sudo dhclient -1 $1
                    if [ $? -eq 0 ]; then
                        echo "Success"
                        cp "$wpa_config" "$wpa_config_dir"/"$md5name"
                        sleep 1
                    else
                        echo "Fail"
                        sleep 1
                    fi
                else
                    sudo ifup $1
                fi
                exit 0
            else
                sudo iwconfig $1 essid "$essid" channel $channel mode $mode key $key
                sudo dhclient $1
                exit 0
            fi
        else
            echo " "
            echo "$essid: Connecting..."
            echo " "
            sudo wpa_supplicant -B -Dwext -i $1 -c "$wpa_config_dir"/"$md5name" &>/dev/null
            sudo dhclient -1 $1
            if [ $? -eq 0 ]; then
                echo "Success"
                cp "$wpa_config_dir"/"$md5name" "$wpa_config"
                sleep 1
                exit 0
            else
                echo "Fail"
                rm "$wpa_config_dir"/"$md5name"
                sleep 1
                exit 0
            fi
        fi
esac