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#!/usr/bin/env python3
# Time to live for caching. 0 to disable caching
CACHE_TTL = 15
sourcequery = [
50, # HL Opposing Force
240, # CS:S
320, # HL2 DM
440, # TF2
550, # L4D2
630, # AlienSwarm
730, # CS:GO
4000, # Garrys Mod
107410, # ARMA III
# 221100, # DayZ
252490, # Rust
282440, # Quake Live
328070, # Reflex
346110 # ARK: Survival Evolved
]
sourcequeryinc = [
107410, # ARMA III
346110 # ARK: Survival Evolved
]
import json
import socket
import struct
from SteamAPI import SteamAPI
if CACHE_TTL > 0:
from Caching import Caching
class QueryServer():
def QueryServer(ip, port, gameid):
"""Query a supported server.
Args:
ip: IP of the gameserver
port: Port of the gameserver
gameid: Steam gameid of running game
Returns:
dict() with parsed server values"""
port = int(port)
gameid = int(gameid)
if CACHE_TTL > 0:
cache = Caching.readCache('server', '%s-%s-%s' % (str(gameid), ip, str(port)), CACHE_TTL)
if cache:
return json.loads(cache)
socket.setdefaulttimeout(5)
if int(gameid) in sourcequery:
print('Querying server...')
serverdata = QueryServer._querySourceServer(ip, port, gameid)
if CACHE_TTL > 0:
serialized = json.dumps(serverdata)
Caching.writeCache('server', '%s-%s-%s' % (str(gameid), ip, str(port)), serialized)
return serverdata
return None
def _querySourceServer(ip, port, gameid):
"""Query servers using the source query protocol.
Some servers listen for these queries on an higher port."""
if gameid in sourcequeryinc:
port += 1
conn = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
message = None
try:
conn.connect( (ip, port) )
conn.sendall( b'\xFF\xFF\xFF\xFF\x54' + b'Source Engine Query' + b'\x00' )
message = conn.recv(4096)
conn.sendall( b'\xFF\xFF\xFF\xFF\x55\xFF\xFF\xFF\xFF' )
challenge = conn.recv(1024)[5:]
conn.sendall( b'\xFF\xFF\xFF\xFF\x55' + challenge )
playerdata = conn.recv(4096)
except Exception as e:
print('Exception in SourceQuery connection:', e)
if not message:
return None
finally:
conn.close()
data = dict()
# [0]-[3] -> 4*\xFF
data['header'] = chr(message[4])
data['protocol'] = chr(message[5])
message = message[6:]
# Servername
nullterm = message.index(b'\0')
data['name'] = message[:nullterm]
message = message[nullterm+1:]
# Mapname
nullterm = message.index(b'\0')
data['map'] = message[:nullterm]
message = message[nullterm+1:]
# Folder
nullterm = message.index(b'\0')
data['folder'] = message[:nullterm]
message = message[nullterm+1:]
# Game
nullterm = message.index(b'\0')
data['game'] = message[:nullterm]
message = message[nullterm+1:]
data['gameid'] = (message[1] << 8) + message[0]
data['players'] = message[2]
data['playersmax'] = message[3]
data['bots'] = message[4]
data['servertype'] = chr(message[5]) # dedicated/local/proxy(tv)
data['enviroment'] = chr(message[6]) # windows/linux/mac
data['visibility'] = message[7] # 0public 1private
data['vac'] = message[8]
message = message[9:]
# Game
nullterm = message.index(b'\0')
data['gameversion'] = message[:nullterm]
message = message[nullterm+1:]
extradataflag = message[0]
message = message[1:]
if extradataflag & 0x80:
data['port'] = (message[1] << 8) + message[0]
message = message[2:]
if extradataflag & 0x10:
data['steamid'] = (message[7] << 56) + (message[6] << 48) + \
(message[5] << 40) + (message[4] << 32) + \
(message[3] << 24) + (message[2] << 16) + \
(message[1] << 8) + (message[0])
message = message[8:]
if extradataflag & 0x40:
data['sourcetvport'] = (message[1] << 8) + message[0]
message = message[2:]
nullterm = message.index(b'\0')
data['sourcetvname'] = message[:nullterm]
message = message[nullterm+1:]
if extradataflag & 0x20:
nullterm = message.index(b'\0')
data['keywords'] = message[:nullterm]
message = message[nullterm+1:]
if extradataflag & 0x01:
data['sgameid'] = (message[7] << 56) + (message[6] << 48) + \
(message[5] << 40) + (message[4] << 32) + \
(message[3] << 24) + (message[2] << 16) + \
(message[1] << 8) + (message[0])
message = message[8:]
if playerdata and playerdata[4] == ord('D'):
players = []
data['player_info'] = players
number = playerdata[5]
playerdata = playerdata[6:]
index = 0
while index < number and playerdata:
player = dict()
player['index'] = playerdata[0]
nullterm = playerdata.index(b'\0', 1)
player_name = playerdata[1:nullterm]
player['name'] = player_name.decode('utf-8', errors='replace')
playerdata = playerdata[nullterm+1:]
playerscore = (playerdata[3] << 24) + (playerdata[2] << 16) + \
(playerdata[1] << 8) + (playerdata[0])
player['score'] = playerscore
playerdata = playerdata[4:]
duration = int(struct.unpack('f', playerdata[0:4])[0])
player['duration'] = duration
playerdata = playerdata[4:]
players.append(player)
index += 1
# Everything is type bytes, so convert things to utf8?
for key, value in data.items():
if isinstance(value, bytes):
try:
value = value.decode('utf-8', errors='replace')
data[key] = value
except UnicodeDecodeError:
data[key] = "UTF8 Error"
pass
return data
if __name__ == "__main__":
# TODO(andre): Maybe run our tests here?
print('This is a module.')
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