# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.


"""
I am a support module for making SOCKSv4 servers with twistd.
"""

from twisted.protocols import socks
from twisted.python import usage
from twisted.application import internet
import sys

class Options(usage.Options):
synopsis = "[-i <interface>] [-p <port>] [-l <file>]"
optParameters = [["interface", "i", "127.0.0.1", "local interface to which we listen"],
["port", "p", 1080, "Port on which to listen"],
["log", "l", None, "file to log connection data to"]]

compData = usage.Completions(
optActions={"log": usage.CompleteFiles("*.log"),
"interface": usage.CompleteNetInterfaces()}
)

longdesc = "Makes a SOCKSv4 server."

def makeService(config):
if config["interface"] != "127.0.0.1":
print
print "WARNING:"
print " You have chosen to listen on a non-local interface."
print " This may allow intruders to access your local network"
print " if you run this on a firewall."
print
t = socks.SOCKSv4Factory(config['log'])
portno = int(config['port'])
return internet.TCPServer(portno, t, interface=config['interface'])