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	diff --git a/fileserv.py b/fileserv.py
	index 56eac43..1958b22 100755
	--- a/fileserv.py
	+++ b/fileserv.py
	@@ -1,233 +1,238 @@
	#!/usr/bin/env python
	#
	# fileserv.py -- an ad-hoc single file webserver
	# Copyright (C) 2004 Simon Budig <simon@budig.de>
	#
	# This program is free software; you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation; either version 2 of the License, or
	# (at your option) any later version.
	#
	# This program is distributed in the hope that it will be useful,
	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	# GNU General Public License for more details.
	#
	# A copy of the GNU General Public License is available at
	# http://www.fsf.org/licenses/gpl.txt, you can also write to the
	# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	# Boston, MA 02111-1307, USA.


	import os, sys, select, getopt, commands
	import urllib, BaseHTTPServer, SimpleHTTPServer

	maxdownloads = 1
	cpid = -1


	# Utility function to guess the IP (as a string) where the server can be
	# reached from the outside. Quite nasty problem actually.

	def find_ip ():
	os.environ["PATH"] = "/sbin:/usr/sbin:/usr/local/sbin:" + os.environ["PATH"]

	netstat = commands.getoutput ("LC_MESSAGES=C netstat -rn")
	defiface = [i.split ()[-1] for i in netstat.split ('\n')
	if i.split ()[0] == "0.0.0.0"]
	if not defiface:
	return None
	ifcfg = commands.getoutput ("LC_MESSAGES=C ifconfig "
	+ defiface[0]).split ("inet addr:")
	if len (ifcfg) != 2:
	return None
	ip_addr = ifcfg[1].split ()[0]

	# sanity check
	try:
	ints = [ i for i in ip_addr.split (".") if 0 <= int(i) <= 255]
	if len (ints) != 4:
	return None
	except ValueError:
	return None

	return ip_addr


	# Main class implementing an HTTP-Requesthandler, that serves just a single
	# file and redirects all other requests to this file (this passes the actual
	# filename to the client).
	# Currently it is impossible to serve different files with different
	# instances of this class.

	class FileServHTTPRequestHandler (BaseHTTPServer.BaseHTTPRequestHandler):
	server_version = "Simons FileServer"
	protocol_version = "HTTP/1.0"

	filename = "."

	def log_request (self, code='-', size='-'):
	if code == 200:
	BaseHTTPServer.BaseHTTPRequestHandler.log_request (self, code, size)


	def do_GET (self):
	global maxdownloads, cpid

	# Redirect any request to the filename of the file to serve.
	# This hands over the filename to the client.

	self.path = urllib.quote (urllib.unquote (self.path))
	location = "/" + urllib.quote (os.path.basename (self.filename))
	if os.path.isdir (self.filename):
	location += ".tar.gz"

	if self.path != location:
	txt = """\
	<html>
	<head><title>302 Found</title></head>
	<body>302 Found <a href="%s">here</a>.</body>
	</html>\n""" % location
	self.send_response (302)
	self.send_header ("Location", location)
	self.send_header ("Content-type", "text/html")
	self.send_header ("Content-Length", str (len (txt)))
	self.end_headers ()
	self.wfile.write (txt)
	return

	maxdownloads -= 1

	# let a separate process handle the actual download, so that
	# multiple downloads can happen simultaneously.

	cpid = os.fork ()
	if cpid == 0:
	# Child process
	size = -1
	datafile = None

	if os.path.isfile (self.filename):
	size = os.path.getsize (self.filename)
	datafile = open (self.filename)
	elif os.path.isdir (self.filename):
	os.environ['fileserv_dir'], os.environ['fileserv_file'] = os.path.split (self.filename)
	datafile = os.popen ('cd "$fileserv_dir";tar cfz - "$fileserv_file"')

	self.send_response (200)
	self.send_header ("Content-type", "application/octet-stream")
	if size >= 0:
	self.send_header ("Content-Length", size)
	self.end_headers ()

	while 1:
	if select.select ([datafile], [], [], 2)[0]:
	c = datafile.read (1024)
	if c:
	self.wfile.write (c)
	else:
	datafile.close ()
	return


	def serve_files (filename, maxdown = 1, port = 8080):
	global maxdownloads

	maxdownloads = maxdown

	# We have to somehow push the filename of the file to serve to the
	# class handling the requests. This is an evil way to do this...

	FileServHTTPRequestHandler.filename = filename

	httpd = BaseHTTPServer.HTTPServer (('', port),
	FileServHTTPRequestHandler)

	ip = find_ip ()
	if ip:
	print "Now serving on http://%s:%s/" % (ip, httpd.server_port)

	while cpid != 0 and maxdownloads > 0:
	httpd.handle_request ()



	def usage (errmsg = None):
	name = os.path.basename (sys.argv[0])
	+ print >>sys.stderr, """
	+ Usage: %s [-p <port>] [-c <count>] <file/dir>
	+ %s [-p <port>] [-c <count>] -s
	+
	+ Serves a single file <count> times via http on port <port>."
	+ When a directory is specified, a .tar.gz archive gets served,"
	+ when -s is specified instead of a filename, %s distributes itself.
	+
	+ defaults: count = 1, port = 8080
	+ """ % (name, name, name)
	if errmsg:
	print >>sys.stderr, errmsg
	print >>sys.stderr
	- print >>sys.stderr, "Usage: %s [-p <port>] [-c <count>] [file]" % name
	- print >>sys.stderr, " %s [-p <port>] [-c <count>] -s\n" % name
	- print >>sys.stderr, " serves a single file <count> times via http on port <port>."
	- print >>sys.stderr, " When -s is specified instead of a filename, fileserv distributes itself.\n"
	- print >>sys.stderr, " defaults: count = 1, port = 8080\n"
	sys.exit (1)



	def main ():
	global cpid

	maxdown = 1
	port = 8080

	try:
	options, filenames = getopt.getopt (sys.argv[1:], "hsc:p:")
	except getopt.GetoptError, desc:
	usage (desc)

	for option, val in options:
	if option == '-c':
	try:
	maxdown = int (val)
	if maxdown <= 0:
	raise ValueError
	except ValueError:
	usage ("invalid download count: %r. "
	"Please specify an integer >= 0." % val)

	elif option == '-p':
	try:
	port = int (val)
	except ValueError:
	usage ("invalid port number: %r. Please specify an integer" % value)

	elif option == '-s':
	filenames.append (__file__)

	elif option == '-h':
	usage ()

	else:
	usage ("Unknown option: %r" % option)

	if len (filenames) == 1:
	filename = os.path.abspath (filenames[0])
	else:
	usage ("Can only serve single files/directories.")

	if not os.path.exists (filename):
	usage ("%s: No such file or directory" % filenames[0])

	if not (os.path.isfile (filename) or os.path.isdir (filename)):
	usage ("%s: Neither file nor directory" % filenames[0])

	serve_files (filename, maxdown, port)

	# wait for child processes to terminate
	if cpid != 0:
	try:
	while 1:
	os.wait ()
	except OSError:
	pass



	if __name__=='__main__':
	try:
	main ()
	except KeyboardInterrupt:
	pass

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