Automatic authentication on SFR WiFi network

#!/bin/bash

# Auto-connect to SFR WiFi
# To use in combination with wicd
# by vincesafe (Twitter: @vincesafe / blog: vincesafe.fr)

# VARS
# location: URL associated with 302 reply (contains challenge)
# challenge: part of POST data to be sent
# target: target URL for POST
# nasid: hotspot's MAC address (part of location)
# mac: client's MAC address (part of location)
# uamport: same here
# uamip: same here
# mode, channel: ...
# uname: username
# pass: password
uname=#SFR ADDRESS OR TELEPHONE NUMBER
pass=#ACCOUNT PASSWORD
target=https://hotspot.wifi.sfr.fr/nb4_crypt.php

# Step 0: wait for the connection to establish
sleep 2

# Step 1: get the location with wget
wget -O /dev/null -o loc http://perdu.com
echo `grep Location loc` > loc
location=`awk 'BEGIN { FS=" " } { print $2 }' loc`


# Step 2: extract challenge, MAC addresses, ... from location

challenge=`awk 'BEGIN { FS="&" } { print $4 }' loc | awk 'BEGIN { FS="=" } { print $2 }'`
nasid=`awk 'BEGIN { FS="&" } { print $6 }' loc | awk 'BEGIN { FS="=" } { print $2 }'`
mac=`awk 'BEGIN { FS="&" } { print $7 }' loc | awk 'BEGIN { FS="=" } { print $2 }'`
uamport=`awk 'BEGIN { FS="&" } { print $3 }' loc | awk 'BEGIN { FS="=" } { print $2 }'`
uamip=`awk 'BEGIN { FS="&" } { print $2 }' loc | awk 'BEGIN { FS="=" } { print $2 }'`
mode=`awk 'BEGIN { FS="&" } { print $8 }' loc | awk 'BEGIN { FS="=" } { print $2 }'`
channel=`awk 'BEGIN { FS="&" } { print $9 }' loc | awk 'BEGIN { FS="=" } { print $2 }' | awk 'BEGIN { FS=" " } { print $1 }'`




# Step 3: prepare POST with target URL (set in the code)
postdata="choix=neuf&username=$uname&password=$pass&conditions=on&challenge=$challenge&username2=$uname&accessType=neuf&lang=fr&mode=$mode&userurl=http://perdu.com&uamip=$uamip&uamport=$uamport&channel=$channel&mac=$nasid|mac&connexion=Connexion"


# Step 4: send POST request
wget -O debug $target --post-data="$postdata"


# Step 5: get a page on local AP
newloc=`grep location debug | awk 'BEGIN { FS="\"" } { print $2 }'`
wget $newloc -O newloc

# DEBUG
echo START DEBUG
echo challenge $challenge
echo nasid $nasid
echo mac $mac
echo uamport $uamport
echo uamip $uamip
echo mode $mode
echo channel $channel
echo location $location