Checking DB Wifi on ICE connection. If the traffic limit of 200MB has been exceeded, doing some magic stuff.

wifi_on_ice_checker.sh

#!/bin/bash

echo "-------------------------"
echo "DB WiFi Online Checker"
echo "Version 1.0"
echo "-------------------------"

if [[ `whoami` != 'root' ]]
then
  echo "`date`: Please run this script as root! Try again with \"sudo bash $0\"."
  exit 1
fi

while (true)
do
  ping -c 3 8.8.8.8 > /dev/null 2>&1

  if [[ "$?" == 0 ]]
  then    
    WIFI_SID=`/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport -I | grep '\sSSID:' | sed 's/.*: //'`
    if [[ $WIFI_SID != 'WIFIonICE' ]]
    then
      echo "`date`: You are not connected to \"WIFIonICE\", exiting now..."
      exit 1
    fi 
    
    echo "`date`: Still online and working, do nothing yet."
  else
    echo "`date`: Offline, reconnect now with new MAC Address and Hostname."
    networksetup -setairportpower en0 off
    openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//' | xargs ifconfig en0 ether
    hostname `openssl rand -base64 6`
    networksetup -setairportpower en0 on
    echo "`date`: Waiting one Minute for reconnecting with new MAC Address and Hostname."
    sleep 55
  fi
  sleep 5
done