pastebin - collaborative debugging

#! /usr/bin/python

import os
import sys
from getopt import getopt
import zipfile
from glob import glob

def getPk3Hash(thezip):
   # This retrieves the md5 sum from the md5hash file in the zip file
   f = zipfile.ZipFile(thezip, "r")
   line = f.read(thezip[5:] + ".md5")
   return line[:32]

def downloadHashes():
   # Will need to get all of the file.zip.md5 files
   os.system("wget -N http://instagib.jorgepena.be/downloads/packages/ -nd -r -l1 --no-parent -A md5")

def downloadAllPk3s():
   os.system("wget -nd -r -l1 --no-parent -A pk3 http://instagib.jorgepena.be/downloads/packages/")
   try:
      mode = os.stat("base")[ST_MODE]
      if S_ISDIR(mode):
         os.system("mv -v *.pk3 base/")
   except OSError:
      os.system("mkdir base")
      os.system("mv -v *.pk3 base/")

def downloadPk3(thefile):
   # This downloads the updated file
   url = "http://instagib.jorgepena.be/downloads/packages/" + thefile
   dest = "base/" + thefile
   print "Downloading " + thefile + " from " + url + " to " + dest
   os.system("wget -P base/ " + url + " -N")

def Usage():
   print "Instaget: The Instagib Project Updater"
   print "Usage: instaget [SWITCH]"
   print "Switches:"
   print "  -h, --help\t\tdisplays this help message"
   print "  -i, --initial\t\tdownloads all of the pk3s"
   print "  -c, --check\t\tchecks a specific package"
   print "  -a, --all\t\tchecks all of the packages"
   print "  -d, --download\tdownloads the specific pk3"
   print "Examples:"
   print "  Downloading all of the pk3s for the first time:"
   print "    python instaget.py -i"
   print "  Check only one of the pk3s:"
   print "    python instaget.py -c players.pk3"
   print "  Check all of the pk3s:"
   print "    python instaget.py -a"
   print "  Download a specific pk3:"
   print "    python instaget.py -d players.pk3"

def onlyCheck(pk3):
   if os.path.exists(pk3):
      print "Checking " + pk3 + "..."
      f = open(pk3[5:] + ".md5", "r")
      rHash = f.readline()[:32]
      lHash = getPk3Hash(pk3)
      print "---------------------------------------------"
      print "File: " + pk3
      print "Remote Hash: " + rHash
      print "Local Hash:  " + lHash

      if (lHash != rHash):
         print "MD5 Hash Mismatch..."
         failed = failed + 1
         downloadPk3(pk3[5:])
      else:
         print "Successful match"
   else:
      print "The file doesn't even exist. Try using the -d switch"

def doAll():
   # We should first download the hashes
   downloadHashes()
   failed = 0 # This will check how many updates are needed

   pk3s = glob("base/*.pk3")
   for pk3 in pk3s:
      f = open(pk3[5:] + ".md5", "r")
      rHash = f.readline()[:32]
      lHash = getPk3Hash(pk3)
      print "---------------------------------------------"
      print "File: " + pk3
      print "Remote Hash: " + rHash
      print "Local Hash:  " + lHash

      if (lHash != rHash):
         print "MD5 Hash Mismatch..."
         failed = failed + 1
         downloadPk3(pk3[5:])
      else:
         print "Successful match"

   print "---------------------------------------------"
   if failed == 0:
      print "No updates available"
   else:
      print "Downloaded %i updates" % failed

   # Remove the .md5 files
   print "Removing the MD5 Hash files..."
   os.system("rm -v *.md5")

if __name__ == "__main__":
   try:
      opts, args = getopt(sys.argv[1:], ':hicad', ["help", "check"])
   except getopt.GetoptError:
      Usage()
      sys.exit(2)

   if not opts:
      Usage()
      sys.exit(2)

   package = "None"

   for o, a in opts:
      if o in ("-h", "--help"):
         Usage()
      if o in ("-i", "--initial"):
         downloadAllPk3s()
      if o in ("-c", "--check"):
         onlyCheck(a)
      if o in ("-a", "--all"):
         doAll()
      if o in ("-d", "--download"):
         downloadPk3(a)

   if not glob("base/*.pk3"):
      print "No media archives (pk3s) present, now dowloading them all..."
      downloadAllPk3s()
   else:
      doAll()