So you're stuck in an Airport overnight too huh?

fuck_boingo.py

#!/usr/bin/python

# Fuck Boingo. Fuck $7 wifi
# requests module is a non-optional dependency
# gntp is an optional dependency for Growl support

from os         import sys
from random     import randint
from shlex      import split
from subprocess import check_call
from threading  import Timer
from time       import sleep

try:
  from requests import post
except ImportError:
  sys.exit("Error: script requires python requests module.")

defaultIface = "en0"
defaultDelay = 60 * 21
runCmd = lambda cmd : check_call(split(cmd))

# Use Growl & gntp if available, otherwise fall back to "say"
try:
  from gntp import notifier
  def alert(msg):
    notifier.mini(msg)
except ImportError:
  def alert(msg):
    runCmd("say '{0}'".format(msg))

# Makes no attempt to generate Manufacturer assigned MAC addresses
def randMAC():
  return ":".join([ "{:02X}".format(randint(0,255)) for x in range(0,6) ])

# Works on _my_ OSX Lion machine, YMMV
def setMAC(iface):
  runCmd("airport -z")
  sleep(2)
  runCmd("ifconfig {0} ether {1}".format(iface, randMAC()))
  sleep(2)
  runCmd("ifconfig {0} down".format(iface))
  sleep(2)
  runCmd("ifconfig {0} up".format(iface))
  sleep(4) #longer sleep to associate again

def regForWifi():
  # Need to fix this up to automate the POST with the free wifi login.
  # For now, this will open a browser tab to Yahoo that will be caught
  # by the boingo captive portal. Log into the free wifi there.
  runCmd("open http://yahoo.ca")

def renewWifi(iface):
  alert("Renewing wifi")

  setMAC(iface)
  alert("New MAC set")

  regForWifi()

  #Set a timer to renew again in defaultDelay seconds
  t = Timer(defaultDelay, renewWifi, [ defaultIface ])

  alert("Sleeping for {0} minutes".format(defaultDelay / 60))
  t.start()

renewWifi(defaultIface)