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knockknock-proxy.py
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knockknock-proxy.py
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#!/usr/bin/env python
__author__ = "Moxie Marlinspike"
__email__ = "moxie@thoughtcrime.org"
__license__= """
Copyright (c) 2009 Moxie Marlinspike <moxie@thoughtcrime.org>
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 3 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA
"""
import os, sys, asyncore, socket
from knockknock.Profiles import Profiles
from knockknock.proxy.SocksRequestHandler import SocksRequestHandler
import knockknock.daemonize
class ProxyServer(asyncore.dispatcher):
def __init__(self, port, profiles):
asyncore.dispatcher.__init__(self)
self.profiles = profiles
self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
self.set_reuse_addr()
self.bind(("127.0.0.1", port))
self.listen(5)
def handle_accept(self):
conn, addr = self.accept()
SocksRequestHandler(conn, self.profiles)
def usage():
print "knockknock-proxy <listenPort>"
sys.exit(3)
def getProfiles():
homedir = os.path.expanduser('~')
profiles = Profiles(homedir + '/.knockknock/')
profiles.resolveNames()
return profiles
def checkPrivileges():
if not os.geteuid() == 0:
print "\nSorry, knockknock-proxy has to be run as root.\n"
usage()
def checkProfiles():
homedir = os.path.expanduser('~')
if not os.path.isdir(homedir + '/.knockknock/'):
print "Error: you need to setup your profiles in " + homedir + "/.knockknock/"
sys.exit(2)
def main(argv):
if len(argv) != 1:
usage()
checkPrivileges()
checkProfiles()
profiles = getProfiles()
server = ProxyServer(int(argv[0]), profiles)
knockknock.daemonize.createDaemon()
asyncore.loop(use_poll=True)
if __name__ == '__main__':
main(sys.argv[1:])