Slipping podcasts through a filter

#!/usr/local/bin/python

import cgitb; cgitb.enable()
import cgi
from urllib2 import urlopen

def tohex(data):
    return "".join(hex(ord(char))[2:].rjust(2,"0") for char in data)

def fromhex(encoded):
    data = ""
    while encoded:
        data += chr(int(encoded[:2], 16))
        encoded = encoded[2:]
    return data

if __name__=="__main__":
    print("Content-type: text/plain")
    print("")
    url = fromhex( cgi.FieldStorage()["target"].value )
    contents = urlopen(url).read()
    for i in range(len(contents)/40+1):
        print( tohex(contents[40*i:40*i+40]) )

#!/usr/bin/env python2.6
import os
from sys import argv
from urllib2 import build_opener, ProxyHandler

if os.fork():
   exit()

def tohex(data):
   return "".join(hex(ord(char))[2:].rjust(2,"0") for char in data)

def fromhex(encoded):
   data = ""
   while encoded:
       data += chr(int(encoded[:2], 16))
       encoded = encoded[2:]
   return data

if __name__=="__main__":
   if len(argv) < 2:
       print("usage: %s URL [FILENAME]" % argv[0])
       quit()

   os.chdir("/home/courtwright/mp3s")
   url = "http://example.com/cgi-bin/hex.py?target=%s" % tohex(argv[1])
   fname = argv[2] if len(argv)>2 else argv[1].split("/")[-1]
   with open(fname, "wb") as dest:
       for line in build_opener(ProxyHandler({"http":"proxy.example.com:8080"})).open(url):
           dest.write( fromhex(line.strip()) )
           dest.flush()