#! /bin/env python

import httplib			# Client-side mojo
import os.path			# Removes cruft from program name
from sys import argv		# Program name and MAC address fragments
import re			# Zawinski sez, "Now we have two problems."

try:				# Parse MAC address from command line
  mac = ':'.join(argv[1:])	# Paste together whitespace-separated digits
  mac = mac.split(':')		# Tear 'em back apart into digits list
  mac = ''.join(mac)		# Paste 'em back together without ':'s
  if len(mac) != 12:		# Check for 12 digits left
    raise SyntaxError		#   and raise Hell if not.
  mac = int(mac, 16)		# Convert result to 48-bit integer
except:				# If something FUBAR,
  N = os.path.basename(argv[0])	# Remove cruft from program name
  quit("Usage: "		# Issue usage message
   "%s 01 23 45 67 89 AB -or- "
   "%s 01:23:45:67:89:AB"%(N,N))

# Request is made with XML hairball.  XML is "human readable".  Riiiight....

request = """
<?xml version='1.0'?>
<LocationRQ 
  xmlns='http://skyhookwireless.com/wps/2005'
  version='2.6' street-address-lookup='full'>
  <authentication version='2.0'>
    <simple>
      <username>beta</username>
      <realm>js.loki.com</realm>
    </simple>
  </authentication>
  <access-point>
    <mac>%012X</mac>
    <signal-strength>-50</signal-strength>
  </access-point>
</LocationRQ>
""" % mac

# Hammer XML into single-line.  I'm not sure if this is needed, but example
# code (both in Ruby and using curl) did.  See:
#  
#  http://coderrr.wordpress.com/2008/09/10/get-the-physical-location-of-
#            wireless-router-from-its-mac-address-bssid/
#
# NOTE:  A little experimentation indicates that at least *some* reformatting
#   is required.

request = request.split()		# List of lines in hairball
request = "".join(			# Include spaces before attributes
  [l if l.startswith('<') else		# Paste together into one long line.
  ' '+l for l in request])

http = httplib.HTTPSConnection(		# Open secure TCP connection to port
  'api.skyhookwireless.com', 443)	#   443 at Skyhook Wireless.
http.request('POST', '/wps2/location',	# Ask politely for location of WAP
  request, {'Content-Type':'text/xml'})	#   with command-line-specified MAC
response = http.getresponse().read()	# See if Skyhook has heard of it.
http.close()				# Drop connection (needed?)

field = re.compile(			# RE to extract ('foo', 'bar') from
  r'<([^/][^ >]+)[^>]*>([^<]+)</[^>]+>')#   "...<foo ...>bar</foo>..."
result = dict(field.findall(response))	# Compose a dictionary of such fields

try:
  print " Latitude: %+11s" % result["latitude"]
  print "Longitude: %+11s" % result["longitude"]
  print "  Address:", result["street-number"], result["address-line"]
  print "           %s, %s %s" % (result["city"],
    result["state"], result["postal-code"])
except:
  print "Karl hasn't found you yet, Winston."
  print "     INGNORANCE IS STRENGTH!"