Script for downloading all available AirPort device firmwares

grab_firmwares.py

#!/usr/bin/env python

import errno
import os
import plistlib
import sys
import urllib

def makedirs_if_absent(path):
	try:
		os.makedirs(path)
	except OSError as exception:
		if exception.errno != errno.EEXIST:
			raise

#XXX: not really doing much to check the invocation yet
if len(sys.argv) != 2:
	print "Usage: grab_firmwares.py [destination path]"
	sys.exit(1)

# start out with the version plist
#TODO: should also grab version.xml.signature and verify our copy of the plist
(version_file, junk) = urllib.urlretrieve("http://apsu.apple.com/version.xml")
version_plist = plistlib.readPlist(version_file)

# available keys are "AirPortUtility", "AirPortUtilityWin", and "firmwareUpdates"
# we only care about the last one right now
for fw_dict in version_plist["firmwareUpdates"]:
	fw_productid = fw_dict["productID"]
	fw_url = fw_dict["location"]
	fw_filename = fw_url.rsplit("/", 1)[1]
	fw_dir = os.path.join(sys.argv[1], fw_productid)
	makedirs_if_absent(fw_dir)
	fw_path = os.path.join(fw_dir, fw_filename)
	
	print "Downloading {0}".format(fw_url)
	urllib.urlretrieve(fw_url, fw_path)