wpa_connect_hidden

#!/bin/bash

[ -z "$1" ] && echo "iface" && exit 0

iface="$1"

dhclient $iface -x
pkill wpa_supplicant
ifconfig $iface down
ifconfig $iface up

echo -n "Enter SSID: "
read essid
channel="auto"
mode="managed"
#tests for encryption key
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
}" > /etc/wpa_supplicant/wpa_supplicant.conf
if [[ -z `cat /etc/network/interfaces | grep $iface` ]]; then
    wpa_supplicant -B -Dwext -i $iface -c /etc/wpa_supplicant/wpa_supplicant.conf
    dhclient $iface
else
    ifup $iface
fi
exit 0