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"""Query the servers for information."""
import socket
from datetime import datetime
from math import log
from .utils import unicodecmp
class ServerError(Exception):
pass
class Syncable:
last_sync = None
def sync(self):
try:
self._sync()
except (OSError, socket.timeout):
return False
self.last_sync = datetime.utcnow()
return True
class ServerBrowser(Syncable):
def __init__(self, cup):
self.cup = cup
self.servers = cup.db.setdefault("servers", dict)
def _sync(self):
to_delete = set(self.servers)
for x in range(1, 17):
addr = (f"master{x}.teeworlds.com", 8300)
print(addr)
try:
self._sync_server_browser(addr, to_delete)
except (OSError, socket.timeout):
continue
for server_id in to_delete:
self.servers.pop(server_id, None)
if not self.servers:
raise OSError("no servers found")
self.cup.db.sync()
def _sync_server_browser(self, addr, to_delete):
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.settimeout(5)
s.sendto(b"\x20\x00\x00\x00\x00\x48\xff\xff\xff\xffreqt", addr)
data = s.recvfrom(1024)[0][14:]
s.close()
for n in range(0, len(data) // 6):
addr = (
".".join(map(str, map(ord, data[n * 6 : n * 6 + 4]))),
ord(data[n * 6 + 5]) * 256 + ord(data[n * 6 + 4]),
)
server_id = f"{addr[0]}:{addr[1]}"
if server_id in self.servers:
if not self.servers[server_id].sync():
continue
else:
try:
self.servers[server_id] = Server(addr, server_id)
except ServerError:
pass
to_delete.discard(server_id)
class Server(Syncable):
def __init__(self, addr, server_id):
self.addr = addr
self.id = server_id
self.players = []
if not self.sync():
raise ServerError("server not responding in time")
def _sync(self):
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.settimeout(1)
s.sendto(b"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xffgief", self.addr)
bits = s.recvfrom(1024)[0][14:].split(b"\x00")
s.close()
self.version, server_name, map_name = bits[:3]
self.name = server_name.decode("latin1")
self.map = map_name.decode("latin1")
self.gametype = bits[3]
self.flags, self.progression, player_count, self.max_players = map(
int, bits[4:8]
)
# sync the player stats
players = {p.name: p for p in self.players}
for i in range(player_count):
name = bits[8 + i * 2].decode("latin1")
score = int(bits[9 + i * 2])
# update existing player
if name in players:
player = players.pop(name)
player.score = score
# add new player
else:
self.players.append(Player(self, name, score))
# delete players that left
for player in players.values():
try:
self.players.remove(player)
except Exception:
pass
# sort the player list and count them
self.players.sort(key=lambda x: -x.score)
self.player_count = len(self.players)
def __cmp__(self, other):
return unicodecmp(self.name, other.name)
class Player:
def __init__(self, server, name, score):
self.server = server
self.name = name
self.score = score
self.size = round(100 + log(max(score, 1)) * 25, 2)
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