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February 25, 2018 15:31
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Python RCON Client (Source Protocol)
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#!/usr/bin/python | |
# This is an RCON client for games using the Source RCON protocol. | |
# Pass a RCON command via argument (or don't to use interactive mode) | |
# Copyright 2015 Dunto, see below for license information. | |
# This script was written as a quick solution to a personal requirement, | |
# it may or may not be improved on as time passes. I make no promises | |
# as to whether it will work properly for you or not. | |
# 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, see <http://www.gnu.org/licenses/> | |
import socket | |
import struct | |
import sys | |
# START USER EDITABLE SECTION | |
RCON_SERVER_HOSTNAME = 'myserver.com' | |
RCON_SERVER_PORT = 21026 | |
RCON_PASSWORD = 'myrconpassword' | |
RCON_SERVER_TIMEOUT = 1 # server response timeout in seconds, don't go too high | |
# END USER EDITABLE SECTION | |
MESSAGE_TYPE_AUTH = 3 | |
MESSAGE_TYPE_AUTH_RESP = 2 | |
MESSAGE_TYPE_COMMAND = 2 | |
MESSAGE_TYPE_RESP = 0 | |
MESSAGE_ID = 0 | |
def sendMessage(sock, command_string, message_type): | |
"Packages up a command string into a message and sends it" | |
try: | |
# size of message in bytes, id=4 + type=4 + body=variable + null terminator=2 (1 for python string and 1 for message terminator) | |
message_size = (4 + 4 + len(command_string) + 2) | |
message_format = ''.join(['=lll', str(len(command_string)), 's2s']) | |
packed_message = struct.pack(message_format, message_size, MESSAGE_ID, message_type, command_string, str(b'\x00\x00')) | |
sock.sendall(packed_message) | |
except socket.timeout: | |
sock.shutdown(socket.SHUT_RDWR) | |
sock.close() | |
def getResponse(sock): | |
"Gets the message response to a sent command and unpackages it" | |
response_string = None | |
response_dummy = None | |
response_id = -1 | |
response_type = -1 | |
try: | |
(response_size,) = struct.unpack('=l',sock.recv(4)) | |
message_format = ''.join(['=ll', str(response_size-9), 's1s']) | |
(response_id,response_type,response_string,response_dummy) = struct.unpack(message_format, sock.recv(response_size)) | |
if (response_string is None or response_string is str(b'\x00')) and response_id is not 2: | |
response_string = "(Empty Response)" | |
return (response_string, response_id, response_type) | |
except socket.timeout: | |
response_string = "(Connection Timeout)" | |
return (response_string, response_id, response_type) | |
# begin main loop | |
interactive_mode = True | |
while interactive_mode: | |
command_string = None | |
response_string = None | |
response_id = -1 | |
response_type = -1 | |
if len(sys.argv) > 1: | |
command_string = " ".join(sys.argv[1:]) | |
interactive_mode = False | |
else: | |
command_string = raw_input("Command: ") | |
sock = socket.create_connection((RCON_SERVER_HOSTNAME,RCON_SERVER_PORT)) | |
sock.settimeout(RCON_SERVER_TIMEOUT) | |
# send SERVERDATA_AUTH | |
sendMessage(sock, RCON_PASSWORD, MESSAGE_TYPE_AUTH) | |
# get empty SERVERDATA_RESPONSE_VALUE (auth response 1 of 2) | |
response_string,response_id,response_type = getResponse(sock) | |
# get SERVERDATA_AUTH_RESPONSE (auth response 2 of 2) | |
response_string,response_id,response_type = getResponse(sock) | |
# send SERVERDATA_EXECCOMMAND | |
sendMessage(sock, command_string, MESSAGE_TYPE_COMMAND) | |
# get SERVERDATA_RESPONSE_VALUE (command response) | |
response_string,response_id,response_type = getResponse(sock) | |
print response_string | |
sock.shutdown(socket.SHUT_RDWR) | |
sock.close() | |
# end main loop |
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