wifind bash

#!bin/bash
# Busca redes wifi
function BSSID()
{
bssid=`cat redes.temp |\
                       grep -B 5 "$1" |\
                                       sed -n "1p" | awk '{print $5}'`
}

clear

scan="Escaneando."

interfaz="wlan0" # Comentar
echo "Nombre de la interfaz: $interfaz" #Para preguntar interfaz

#echo -n "Nombre de la interfaz: " # Descometar
#read interfaz # Para preguntar interfaz

accesos=`iwlist $interfaz scan > redes.temp`

if [ $? -ne 0 ]; then exit 1; else echo -n ""; fi

n_accesos=`grep ESSID redes.temp | wc -l`

i=1; o=0

while [[ $i && $o -lt $n_accesos ]]; do
    printf "$scan\r"
    red[$o]=`iwlist $interfaz scan |\
                       grep ESSID  |\
                               awk '{print $1}' |\
                                   perl -p -e 's/ESSID://g; s/^["]//g ; s/["]$//g' |\
                                      sed -n -e "$i p; /^$/d"`
    let i=i+1 && let o=o+1 && scan=${scan}"."
done

i=0;

echo "Redes disponibles : "

while [ $i -lt ${#red[*]} ]; do
    enctriptacion[$i]=`cat redes.temp |\
                                       grep -B 1 ${red[$i]} |\
                                                            sed -n "1p" |\
                                                                        awk '{print $2}'`
    BSSID ${red[$i]}
    if [[ ${enctriptacion[$i]} =  "key:off" ]] ; then
        echo -e "\e[1;35m$i \e[0m" "${red[$i]}\t $bssid\t (Abierta)"
    else
        echo -e "\e[1;35m$i \e[0m" "${red[$i]}\t $bssid"
   fi
    let i=i+1
done

echo -n "Hay ${#red[*]} redes dispnibles,conectarse a : "

n=`expr ${#red[*]} - 1`

while [ 1 ]; do
    read conect
    if [[ $conect =~ [0-"${n}"] ]]; then
        break
    else
        echo -n "Hay ${#red[*]} redes disponibles,conectarse a (numeros) : "
        continue
    fi
done

BSSID ${red[$conect]}

echo -e "\e[1;33mESSID : ${red[$conect]} BSSID : $bssid \e[0m"

<<EOD
Por si necesitan el essid y bssid

essid=${red[$conect]}

bssid=`cat redes.temp |\
                       grep -B 5 "${red[$conect]}" |\
                                                   sed -n "1p" | awk '{print $5}'`
EOD

while [ 1 ]; do
    if [ ${enctriptacion[$conect]} = "key:off" ]; then
        echo "Conectando..."; sleep 1;
         iwconfig $interfaz essid "${red[$conect]}"
            echo "Ejecutando dhcpcd"
            dhcpcd $interfaz
            rm redes.temp
            break
    else
            echo -n "Clave(Wep):: "
            read -s clave  # Eliminar "-s" para poder ver l clave al escribir
            echo "Conectando..."
            iwconfig $interfaz essid "${red[$conect]}" key $clave
            echo "Ejecutando dhcpcd"
            dhcpcd $interfaz #cambiar dhcpcd por otro programa
            if [$? -eq 0 ]; then
                echo "Error :("
                continue
            else
                rm redes.temp
                break
            fi
    fi
done

#This library is free software; you can redistribute it and/or modify it under
#the terms of the GNU Library General Public License as published by the Free
#Software Foundation; either version 2.1 of the License, or (at your option) any
#later version.