Always accept any client trying to connect to an idtech3 server

README.md

Be sure to add this to your /etc/hosts file:

127.0.0.1 codauthorize.activision.com

masterserver.py

#!/usr/bin/env python2
# -*- coding: utf-8 -*-

import socket

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

server_address = '127.0.0.1'
server_port = 20500

server = (server_address, server_port)
sock.bind(server)

print("Listening on udp://" + server_address + ":" + str(server_port))

HEADER = "\xff\xff\xff\xff"

while True:
    payload, client_address = sock.recvfrom(512)
    # Strip first 4 empty bytes
    cmd = payload[4:]

    print("Received command from server:")
    print(cmd)
    
    pieces = cmd.split(" ")
    if pieces[0] == "getIpAuthorize":
        challenge = pieces[1]
        print("getIpAuthorize: challenge is: " + challenge)
        responsePacket = HEADER + "ipAuthorize " + challenge + " accept"
        print(responsePacket)
        sock.sendto(responsePacket, client_address)
    else:
        print("Command is unknown... Sending gibberish")
        sock.sendto(HEADER + "unknown", client_address)