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bancho.py/app/api/domains/cho.py
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"""cho: handle cho packets from the osu! client"""
from __future__ import annotations
import asyncio
import hashlib
import logging
import re
import struct
import time
from collections.abc import Callable
from collections.abc import Mapping
from datetime import date
from datetime import datetime
from pathlib import Path
from typing import Literal
from typing import TypedDict
from zoneinfo import ZoneInfo
import bcrypt
import databases.core
from fastapi import APIRouter
from fastapi import Response
from fastapi.param_functions import Header
from fastapi.requests import Request
from fastapi.responses import HTMLResponse
import app.packets
import app.settings
import app.state
import app.usecases.performance
import app.utils
from app import commands
from app._typing import IPAddress
from app.constants import regexes
from app.constants.gamemodes import GameMode
from app.constants.mods import SPEED_CHANGING_MODS
from app.constants.mods import Mods
from app.constants.privileges import ClanPrivileges
from app.constants.privileges import ClientPrivileges
from app.constants.privileges import Privileges
from app.logging import Ansi
from app.logging import get_timestamp
from app.logging import log
from app.logging import magnitude_fmt_time
from app.objects.beatmap import Beatmap
from app.objects.beatmap import ensure_osu_file_is_available
from app.objects.channel import Channel
from app.objects.match import MAX_MATCH_NAME_LENGTH
from app.objects.match import Match
from app.objects.match import MatchTeams
from app.objects.match import MatchTeamTypes
from app.objects.match import MatchWinConditions
from app.objects.match import Slot
from app.objects.match import SlotStatus
from app.objects.player import Action
from app.objects.player import ClientDetails
from app.objects.player import OsuStream
from app.objects.player import OsuVersion
from app.objects.player import Player
from app.objects.player import PresenceFilter
from app.packets import BanchoPacketReader
from app.packets import BasePacket
from app.packets import ClientPackets
from app.packets import LoginFailureReason
from app.repositories import client_hashes as client_hashes_repo
from app.repositories import ingame_logins as logins_repo
from app.repositories import mail as mail_repo
from app.repositories import users as users_repo
from app.state import services
from app.usecases.performance import ScoreParams
OSU_API_V2_CHANGELOG_URL = "https://osu.ppy.sh/api/v2/changelog"
BEATMAPS_PATH = Path.cwd() / ".data/osu"
DISK_CHAT_LOG_FILE = ".data/logs/chat.log"
BASE_DOMAIN = app.settings.DOMAIN
# TODO: dear god
NOW_PLAYING_RGX = re.compile(
r"^\x01ACTION is (?:playing|editing|watching|listening to) "
rf"\[https://osu\.(?:{re.escape(BASE_DOMAIN)}|ppy\.sh)/beatmapsets/(?P<sid>\d{{1,10}})#/?(?:osu|taiko|fruits|mania)?/(?P<bid>\d{{1,10}})/? .+\]"
r"(?: <(?P<mode_vn>Taiko|CatchTheBeat|osu!mania)>)?"
r"(?P<mods>(?: (?:-|\+|~|\|)\w+(?:~|\|)?)+)?\x01$",
)
FIRST_USER_ID = 3
router = APIRouter(tags=["Bancho API"])
@router.get("/")
async def bancho_http_handler() -> Response:
"""Handle a request from a web browser."""
new_line = "\n"
matches = [m for m in app.state.sessions.matches if m is not None]
players = [p for p in app.state.sessions.players if not p.is_bot_client]
packets = app.state.packets["all"]
return HTMLResponse(
f"""
<!DOCTYPE html>
<body style="font-family: monospace; white-space: pre-wrap;">Running bancho.py v{app.settings.VERSION}
<a href="online">{len(players)} online players</a>
<a href="matches">{len(matches)} matches</a>
<b>packets handled ({len(packets)})</b>
{new_line.join([f"{packet.name} ({packet.value})" for packet in packets])}
<a href="https://github.com/twinkangelz/bancho.py">Source code</a>
</body>
</html>""",
)
@router.get("/online")
async def bancho_view_online_users() -> Response:
"""see who's online"""
new_line = "\n"
players: list[Player] = []
bots: list[Player] = []
for p in app.state.sessions.players:
if p.is_bot_client:
bots.append(p)
else:
players.append(p)
id_max_length = len(str(max(p.id for p in app.state.sessions.players)))
return HTMLResponse(
f"""
<!DOCTYPE html>
<body style="font-family: monospace; white-space: pre-wrap;"><a href="/">back</a>
users:
{new_line.join([f"({p.id:>{id_max_length}}): {p.safe_name}" for p in players])}
bots:
{new_line.join(f"({p.id:>{id_max_length}}): {p.safe_name}" for p in bots)}
</body>
</html>""",
)
@router.get("/matches")
async def bancho_view_matches() -> Response:
"""ongoing matches"""
new_line = "\n"
ON_GOING = "ongoing"
IDLE = "idle"
max_status_length = len(max(ON_GOING, IDLE))
BEATMAP = "beatmap"
HOST = "host"
max_properties_length = max(len(BEATMAP), len(HOST))
matches = [m for m in app.state.sessions.matches if m is not None]
match_id_max_length = (
len(str(max(match.id for match in matches))) if len(matches) else 0
)
return HTMLResponse(
f"""
<!DOCTYPE html>
<body style="font-family: monospace; white-space: pre-wrap;"><a href="/">back</a>
matches:
{new_line.join(
f'''{(ON_GOING if m.in_progress else IDLE):<{max_status_length}} ({m.id:>{match_id_max_length}}): {m.name}
-- '''
+ f"{new_line}-- ".join([
f'{BEATMAP:<{max_properties_length}}: {m.map_name}',
f'{HOST:<{max_properties_length}}: <{m.host.id}> {m.host.safe_name}'
]) for m in matches
)}
</body>
</html>""",
)
@router.post("/")
async def bancho_handler(
request: Request,
osu_token: str | None = Header(None),
user_agent: Literal["osu!"] = Header(...),
) -> Response:
ip = app.state.services.ip_resolver.get_ip(request.headers)
if osu_token is None:
# the client is performing a login
login_data = await handle_osu_login_request(
request.headers,
await request.body(),
ip,
)
return Response(
content=login_data["response_body"],
headers={"cho-token": login_data["osu_token"]},
)
# get the player from the specified osu token.
player = app.state.sessions.players.get(token=osu_token)
if not player:
# chances are, we just restarted the server
# tell their client to reconnect immediately.
return Response(
content=(
app.packets.notification("Server has restarted.")
+ app.packets.restart_server(0) # ms until reconnection
),
)
if player.restricted:
# restricted users may only use certain packet handlers.
packet_map = app.state.packets["restricted"]
else:
packet_map = app.state.packets["all"]
# bancho connections can be comprised of multiple packets;
# our reader is designed to iterate through them individually,
# allowing logic to be implemented around the actual handler.
# NOTE: any unhandled packets will be ignored internally.
with memoryview(await request.body()) as body_view:
for packet in BanchoPacketReader(body_view, packet_map):
await packet.handle(player)
player.last_recv_time = time.time()
response_data = player.dequeue()
return Response(content=response_data)
""" Packet logic """
def register(
packet: ClientPackets,
restricted: bool = False,
) -> Callable[[type[BasePacket]], type[BasePacket]]:
"""Register a handler in `app.state.packets`."""
def wrapper(cls: type[BasePacket]) -> type[BasePacket]:
app.state.packets["all"][packet] = cls
if restricted:
app.state.packets["restricted"][packet] = cls
return cls
return wrapper
@register(ClientPackets.PING, restricted=True)
class Ping(BasePacket):
async def handle(self, player: Player) -> None:
pass # ping be like
@register(ClientPackets.CHANGE_ACTION, restricted=True)
class ChangeAction(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.action = reader.read_u8()
self.info_text = reader.read_string()
self.map_md5 = reader.read_string()
self.mods = reader.read_u32()
self.mode = reader.read_u8()
if self.mods & Mods.RELAX:
if self.mode == 3: # rx!mania doesn't exist
self.mods &= ~Mods.RELAX
else:
self.mode += 4
elif self.mods & Mods.AUTOPILOT:
if self.mode in (1, 2, 3): # ap!catch, taiko and mania don't exist
self.mods &= ~Mods.AUTOPILOT
else:
self.mode += 8
self.map_id = reader.read_i32()
async def handle(self, player: Player) -> None:
# update the user's status.
player.status.action = Action(self.action)
player.status.info_text = self.info_text
player.status.map_md5 = self.map_md5
player.status.mods = Mods(self.mods)
player.status.mode = GameMode(self.mode)
player.status.map_id = self.map_id
# broadcast it to all online players.
if not player.restricted:
app.state.sessions.players.enqueue(app.packets.user_stats(player))
IGNORED_CHANNELS = ["#highlight", "#userlog"]
@register(ClientPackets.SEND_PUBLIC_MESSAGE)
class SendMessage(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.msg = reader.read_message()
async def handle(self, player: Player) -> None:
if player.silenced:
log(f"{player} sent a message while silenced.", Ansi.LYELLOW)
return
# remove leading/trailing whitespace
msg = self.msg.text.strip()
if not msg:
return
recipient = self.msg.recipient
if recipient in IGNORED_CHANNELS:
return
elif recipient == "#spectator":
if player.spectating:
# we are spectating someone
spec_id = player.spectating.id
elif player.spectators:
# we are being spectated
spec_id = player.id
else:
return
t_chan = app.state.sessions.channels.get_by_name(f"#spec_{spec_id}")
elif recipient == "#multiplayer":
if not player.match:
# they're not in a match?
return
t_chan = player.match.chat
else:
t_chan = app.state.sessions.channels.get_by_name(recipient)
if not t_chan:
log(f"{player} wrote to non-existent {recipient}.", Ansi.LYELLOW)
return
if player not in t_chan:
log(f"{player} wrote to {recipient} without being in it.")
return
if not t_chan.can_write(player.priv):
log(f"{player} wrote to {recipient} with insufficient privileges.")
return
# limit message length to 2k chars
# perhaps this could be dangerous with !py..?
if len(msg) > 2000:
msg = f"{msg[:2000]}... (truncated)"
player.enqueue(
app.packets.notification(
"Your message was truncated\n(exceeded 2000 characters).",
),
)
if msg.startswith(app.settings.COMMAND_PREFIX):
cmd = await commands.process_commands(player, t_chan, msg)
else:
cmd = None
if cmd:
# a command was triggered.
if not cmd["hidden"]:
t_chan.send(msg, sender=player)
if cmd["resp"] is not None:
t_chan.send_bot(cmd["resp"])
else:
staff = app.state.sessions.players.staff
t_chan.send_selective(
msg=msg,
sender=player,
recipients=staff - {player},
)
if cmd["resp"] is not None:
t_chan.send_selective(
msg=cmd["resp"],
sender=app.state.sessions.bot,
recipients=staff | {player},
)
else:
# no commands were triggered
# check if the user is /np'ing a map.
# even though this is a public channel,
# we'll update the player's last np stored.
r_match = NOW_PLAYING_RGX.match(msg)
if r_match:
# the player is /np'ing a map.
# save it to their player instance
# so we can use this elsewhere.
bmap = await Beatmap.from_bid(int(r_match["bid"]))
if bmap:
# parse mode_vn int from regex
if r_match["mode_vn"] is not None:
mode_vn = {"Taiko": 1, "CatchTheBeat": 2, "osu!mania": 3}[
r_match["mode_vn"]
]
else:
# use player mode if not specified
mode_vn = player.status.mode.as_vanilla
# parse the mods from regex
mods = None
if r_match["mods"] is not None:
mods = Mods.from_np(r_match["mods"][1:], mode_vn)
player.last_np = {
"bmap": bmap,
"mods": mods,
"mode_vn": mode_vn,
"timeout": time.time() + 300, # /np's last 5mins
}
else:
# time out their previous /np
player.last_np = None
t_chan.send(msg, sender=player)
player.update_latest_activity_soon()
log(f"{player} @ {t_chan}: {msg}", Ansi.LCYAN)
with open(DISK_CHAT_LOG_FILE, "a+") as f:
f.write(
f"[{get_timestamp(full=True, tz=ZoneInfo('GMT'))}] {player} @ {t_chan}: {msg}\n",
)
@register(ClientPackets.LOGOUT, restricted=True)
class Logout(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
reader.read_i32() # reserved
async def handle(self, player: Player) -> None:
if (time.time() - player.login_time) < 1:
# osu! has a weird tendency to log out immediately after login.
# i've tested the times and they're generally 300-800ms, so
# we'll block any logout request within 1 second from login.
return
player.logout()
player.update_latest_activity_soon()
@register(ClientPackets.REQUEST_STATUS_UPDATE, restricted=True)
class StatsUpdateRequest(BasePacket):
async def handle(self, player: Player) -> None:
player.enqueue(app.packets.user_stats(player))
# Some messages to send on welcome/restricted/etc.
# TODO: these should probably be moved to the config.
WELCOME_MSG = "\n".join(
(
f"Welcome to {BASE_DOMAIN}.",
"To see a list of commands, use !help.",
"We have a public (Discord)[https://discord.gg/memorial]!",
"Enjoy the server!",
),
)
RESTRICTED_MSG = (
"Your account has been restricted! "
"While restricted, you will be unable to interact with other players "
"and your scores will only be visible to you and staff. "
"If you believe this is a mistake, or have waited longer than 3 months, "
"you can appeal in our Discord."
)
WELCOME_NOTIFICATION = app.packets.notification(
f"If you ain't 22, I aint touching you. -Yuki, 2025",
)
OFFLINE_NOTIFICATION = app.packets.notification(
"The server is currently running in offline mode; "
"some features will be unavailable.",
)
class LoginResponse(TypedDict):
osu_token: str
response_body: bytes
class LoginData(TypedDict):
username: str
password_md5: bytes
osu_version: str
utc_offset: int
display_city: bool
pm_private: bool
osu_path_md5: str
adapters_str: str
adapters_md5: str
uninstall_md5: str
disk_signature_md5: str
def parse_login_data(data: bytes) -> LoginData:
"""Parse data from the body of a login request."""
(
username,
password_md5,
remainder,
) = data.decode().split("\n", maxsplit=2)
(
osu_version,
utc_offset,
display_city,
client_hashes,
pm_private,
) = remainder.split("|", maxsplit=4)
(
osu_path_md5,
adapters_str,
adapters_md5,
uninstall_md5,
disk_signature_md5,
) = client_hashes[:-1].split(":", maxsplit=4)
return {
"username": username,
"password_md5": password_md5.encode(),
"osu_version": osu_version,
"utc_offset": int(utc_offset),
"display_city": display_city == "1",
"pm_private": pm_private == "1",
"osu_path_md5": osu_path_md5,
"adapters_str": adapters_str,
"adapters_md5": adapters_md5,
"uninstall_md5": uninstall_md5,
"disk_signature_md5": disk_signature_md5,
}
def parse_osu_version_string(osu_version_string: str) -> OsuVersion | None:
match = regexes.OSU_VERSION.match(osu_version_string)
if match is None:
return None
osu_version = OsuVersion(
date=date(
year=int(match["date"][0:4]),
month=int(match["date"][4:6]),
day=int(match["date"][6:8]),
),
revision=int(match["revision"]) if match["revision"] else None,
stream=OsuStream(match["stream"] or "stable"),
)
return osu_version
async def get_allowed_client_versions(osu_stream: OsuStream) -> set[date] | None:
"""
Return a list of acceptable client versions for the given stream.
This is used to determine whether a client is too old to connect to the server.
Returns None if the connection to the osu! api fails.
"""
osu_stream_str = osu_stream.value
if osu_stream in (OsuStream.STABLE, OsuStream.BETA):
osu_stream_str += "40" # i wonder why this exists
response = await services.http_client.get(
OSU_API_V2_CHANGELOG_URL,
params={"stream": osu_stream_str},
)
if not response.is_success:
return None
allowed_client_versions: set[date] = set()
for build in response.json()["builds"]:
version = date(
int(build["version"][0:4]),
int(build["version"][4:6]),
int(build["version"][6:8]),
)
allowed_client_versions.add(version)
if any(entry["major"] for entry in build["changelog_entries"]):
# this build is a major iteration to the client
# don't allow anything older than this
break
return allowed_client_versions
def parse_adapters_string(adapters_string: str) -> tuple[list[str], bool]:
running_under_wine = adapters_string == "runningunderwine"
adapters = adapters_string[:-1].split(".")
return adapters, running_under_wine
async def authenticate(
username: str,
untrusted_password: bytes,
) -> users_repo.User | None:
user_info = await users_repo.fetch_one(
name=username,
fetch_all_fields=True,
)
if user_info is None:
return None
trusted_hashword = user_info["pw_bcrypt"].encode()
# in-memory bcrypt lookup cache for performance
if trusted_hashword in app.state.cache.bcrypt: # ~0.01 ms
if untrusted_password != app.state.cache.bcrypt[trusted_hashword]:
return None
else: # ~200ms
if not bcrypt.checkpw(untrusted_password, trusted_hashword):
return None
app.state.cache.bcrypt[trusted_hashword] = untrusted_password
return user_info
async def handle_osu_login_request(
headers: Mapping[str, str],
body: bytes,
ip: IPAddress,
) -> LoginResponse:
"""\
Login has no specific packet, but happens when the osu!
client sends a request without an 'osu-token' header.
Request format:
username\npasswd_md5\nosu_version|utc_offset|display_city|client_hashes|pm_private\n
Response format:
Packet 5 (userid), with ID:
-1: authentication failed
-2: old client
-3: banned
-4: banned
-5: error occurred
-6: needs supporter
-7: password reset
-8: requires verification
other: valid id, logged in
"""
# parse login data
login_data = parse_login_data(body)
# perform some validation & further parsing on the data
osu_version = parse_osu_version_string(login_data["osu_version"])
if osu_version is None:
return {
"osu_token": "invalid-request",
"response_body": (
app.packets.login_reply(LoginFailureReason.AUTHENTICATION_FAILED)
+ app.packets.notification("Please restart your osu! and try again.")
),
}
if app.settings.DISALLOW_OLD_CLIENTS:
allowed_client_versions = await get_allowed_client_versions(
osu_version.stream,
)
# in the case where the osu! api fails, we'll allow the client to connect
if (
allowed_client_versions is not None
and osu_version.date not in allowed_client_versions
):
return {
"osu_token": "client-too-old",
"response_body": (
app.packets.version_update()
+ app.packets.login_reply(LoginFailureReason.OLD_CLIENT)
),
}
adapters, running_under_wine = parse_adapters_string(login_data["adapters_str"])
if not (running_under_wine or any(adapters)):
return {
"osu_token": "empty-adapters",
"response_body": (
app.packets.login_reply(LoginFailureReason.AUTHENTICATION_FAILED)
+ app.packets.notification("Please restart your osu! and try again.")
),
}
## parsing successful
login_time = time.time()
# disallow multiple sessions from a single user
# with the exception of tourney spectator clients
player = app.state.sessions.players.get(name=login_data["username"])
if player and osu_version.stream != "tourney":
# check if the existing session is still active
if (login_time - player.last_recv_time) < 10:
return {
"osu_token": "user-already-logged-in",
"response_body": (
app.packets.login_reply(LoginFailureReason.AUTHENTICATION_FAILED)
+ app.packets.notification("User already logged in.")
),
}
else:
# session is not active; replace it
player.logout()
del player
user_info = await authenticate(login_data["username"], login_data["password_md5"])
if user_info is None:
return {
"osu_token": "incorrect-credentials",
"response_body": (
app.packets.notification(f"{BASE_DOMAIN}: Incorrect credentials")
+ app.packets.login_reply(LoginFailureReason.AUTHENTICATION_FAILED)
),
}
if osu_version.stream is OsuStream.TOURNEY and not (
user_info["priv"] & Privileges.DONATOR
and user_info["priv"] & Privileges.UNRESTRICTED
):
# trying to use tourney client with insufficient privileges.
return {
"osu_token": "no",
"response_body": app.packets.login_reply(
LoginFailureReason.AUTHENTICATION_FAILED,
),
}
""" login credentials verified """
await logins_repo.create(
user_id=user_info["id"],
ip=str(ip),
osu_ver=osu_version.date,
osu_stream=osu_version.stream,
)
await client_hashes_repo.create(
userid=user_info["id"],
osupath=login_data["osu_path_md5"],
adapters=login_data["adapters_md5"],
uninstall_id=login_data["uninstall_md5"],
disk_serial=login_data["disk_signature_md5"],
)
# TODO: store adapters individually
# Some disk manufacturers set constant/shared ids for their products.
# In these cases, there's not a whole lot we can do -- we'll allow them thru.
INACTIONABLE_DISK_SIGNATURE_MD5S: list[str] = [
hashlib.md5(b"0").hexdigest(), # "0" is likely the most common variant
]
if login_data["disk_signature_md5"] not in INACTIONABLE_DISK_SIGNATURE_MD5S:
disk_signature_md5 = login_data["disk_signature_md5"]
else:
disk_signature_md5 = None
hw_matches = await client_hashes_repo.fetch_any_hardware_matches_for_user(
userid=user_info["id"],
running_under_wine=running_under_wine,
adapters=login_data["adapters_md5"],
uninstall_id=login_data["uninstall_md5"],
disk_serial=disk_signature_md5,
)
if hw_matches:
# we have other accounts with matching hashes
if user_info["priv"] & Privileges.VERIFIED:
# this is a normal, registered & verified player.
# TODO: this user already has a registered hwid.
# they may be multi-accounting;
# there may be some desirable behavior to implement here in the future.
...
else:
# this player is not verified yet, this is their first
# time connecting in-game and submitting their hwid set.
# we will not allow any banned matches; if there are any,
# then ask the user to contact staff and resolve manually.
if not all(
[hw_match["priv"] & Privileges.UNRESTRICTED for hw_match in hw_matches],
):
return {
"osu_token": "contact-staff",
"response_body": (
app.packets.notification(
"Please contact staff directly to create an account.",
)
+ app.packets.login_reply(
LoginFailureReason.AUTHENTICATION_FAILED,
)
),
}
""" All checks passed, player is safe to login """
# get clan & clan priv if we're in a clan
clan_id: int | None = None
clan_priv: ClanPrivileges | None = None
if user_info["clan_id"] != 0:
clan_id = user_info["clan_id"]
clan_priv = ClanPrivileges(user_info["clan_priv"])
db_country = user_info["country"]
geoloc = await app.state.services.fetch_geoloc(ip, headers)
if geoloc is None:
return {
"osu_token": "login-failed",
"response_body": (
app.packets.notification(
f"{BASE_DOMAIN}: Login failed. Please contact an admin.",
)
+ app.packets.login_reply(LoginFailureReason.AUTHENTICATION_FAILED)
),
}
if db_country == "xx":
# bugfix for old bancho.py versions when
# country wasn't stored on registration.
log(f"Fixing {login_data['username']}'s country.", Ansi.LGREEN)
await users_repo.partial_update(
id=user_info["id"],
country=geoloc["country"]["acronym"],
)
client_details = ClientDetails(
osu_version=osu_version,
osu_path_md5=login_data["osu_path_md5"],
adapters_md5=login_data["adapters_md5"],
uninstall_md5=login_data["uninstall_md5"],
disk_signature_md5=login_data["disk_signature_md5"],
adapters=adapters,
ip=ip,
)
player = Player(
id=user_info["id"],
name=user_info["name"],
priv=Privileges(user_info["priv"]),
pw_bcrypt=user_info["pw_bcrypt"].encode(),
token=Player.generate_token(),
clan_id=clan_id,
clan_priv=clan_priv,
geoloc=geoloc,
utc_offset=login_data["utc_offset"],
pm_private=login_data["pm_private"],
silence_end=user_info["silence_end"],
donor_end=user_info["donor_end"],
client_details=client_details,
login_time=login_time,
is_tourney_client=osu_version.stream == "tourney",
api_key=user_info["api_key"],
)
data = bytearray(app.packets.protocol_version(19))
data += app.packets.login_reply(player.id)
# *real* client privileges are sent with this packet,
# then the user's apparent privileges are sent in the
# userPresence packets to other players. we'll send
# supporter along with the user's privileges here,
# but not in userPresence (so that only donators
# show up with the yellow name in-game, but everyone
# gets osu!direct & other in-game perks).
data += app.packets.bancho_privileges(
player.bancho_priv | ClientPrivileges.SUPPORTER,
)
data += WELCOME_NOTIFICATION
# send all appropriate channel info to our player.
# the osu! client will attempt to join the channels.
for channel in app.state.sessions.channels:
if (
not channel.auto_join
or not channel.can_read(player.priv)
or channel._name == "#lobby" # (can't be in mp lobby @ login)
):
continue
# send chan info to all players who can see
# the channel (to update their playercounts)
chan_info_packet = app.packets.channel_info(
channel._name,
channel.topic,
len(channel.players),
)
data += chan_info_packet
for o in app.state.sessions.players:
if channel.can_read(o.priv):
o.enqueue(chan_info_packet)
# tells osu! to reorder channels based on config.
data += app.packets.channel_info_end()
# fetch some of the player's
# information from sql to be cached.
await player.stats_from_sql_full()
await player.relationships_from_sql()
# TODO: fetch player.recent_scores from sql
data += app.packets.main_menu_icon(
icon_url=app.settings.MENU_ICON_URL,
onclick_url=app.settings.MENU_ONCLICK_URL,
)
data += app.packets.friends_list(player.friends)
data += app.packets.silence_end(player.remaining_silence)
# update our new player's stats, and broadcast them.
user_data = app.packets.user_presence(player) + app.packets.user_stats(player)
data += user_data
if not player.restricted:
# player is unrestricted, two way data
for o in app.state.sessions.players:
# enqueue us to them
o.enqueue(user_data)
# enqueue them to us.
if not o.restricted:
if o is app.state.sessions.bot:
# optimization for bot since it's
# the most frequently requested user
data += app.packets.bot_presence(o)
data += app.packets.bot_stats(o)
else:
data += app.packets.user_presence(o)
data += app.packets.user_stats(o)
# the player may have been sent mail while offline,
# enqueue any messages from their respective authors.
mail_rows = await mail_repo.fetch_all_mail_to_user(
user_id=player.id,
read=False,
)
if mail_rows:
sent_to: set[int] = set()
for msg in mail_rows:
# Add "Unread messages" header as the first message
# for any given sender, to make it clear that the
# messages are coming from the mail system.
if msg["from_id"] not in sent_to:
data += app.packets.send_message(
sender=msg["from_name"],
msg="Unread messages",
recipient=msg["to_name"],
sender_id=msg["from_id"],
)
sent_to.add(msg["from_id"])
msg_time = datetime.fromtimestamp(msg["time"])
data += app.packets.send_message(
sender=msg["from_name"],
msg=f'[{msg_time:%a %b %d @ %H:%M%p}] {msg["msg"]}',
recipient=msg["to_name"],
sender_id=msg["from_id"],
)
if not player.priv & Privileges.VERIFIED:
# this is the player's first login, verify their
# account & send info about the server/its usage.
await player.add_privs(Privileges.VERIFIED)
if player.id == FIRST_USER_ID:
# this is the first player registering on
# the server, grant them full privileges.
await player.add_privs(
Privileges.STAFF
| Privileges.NOMINATOR
| Privileges.WHITELISTED
| Privileges.TOURNEY_MANAGER
| Privileges.DONATOR
| Privileges.ALUMNI,
)
data += app.packets.send_message(
sender=app.state.sessions.bot.name,
msg=WELCOME_MSG,
recipient=player.name,
sender_id=app.state.sessions.bot.id,
)
else:
# player is restricted, one way data
for o in app.state.sessions.players.unrestricted:
# enqueue them to us.
if o is app.state.sessions.bot:
# optimization for bot since it's
# the most frequently requested user
data += app.packets.bot_presence(o)
data += app.packets.bot_stats(o)
else:
data += app.packets.user_presence(o)
data += app.packets.user_stats(o)
data += app.packets.account_restricted()
data += app.packets.send_message(
sender=app.state.sessions.bot.name,
msg=RESTRICTED_MSG,
recipient=player.name,
sender_id=app.state.sessions.bot.id,
)
# add `p` to the global player list,
# making them officially logged in.
app.state.sessions.players.append(player)
if app.state.services.datadog:
if not player.restricted:
app.state.services.datadog.increment("bancho.online_players")
time_taken = time.time() - login_time
app.state.services.datadog.histogram("bancho.login_time", time_taken)
user_os = "unix (wine)" if running_under_wine else "win32"
country_code = player.geoloc["country"]["acronym"].upper()
log(
f"{player} logged in from {country_code} using {login_data['osu_version']} on {user_os}",
Ansi.LCYAN,
)
player.update_latest_activity_soon()
return {"osu_token": player.token, "response_body": bytes(data)}
@register(ClientPackets.START_SPECTATING)
class StartSpectating(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.target_id = reader.read_i32()
async def handle(self, player: Player) -> None:
new_host = app.state.sessions.players.get(id=self.target_id)
if not new_host:
log(
f"{player} tried to spectate nonexistant id {self.target_id}.",
Ansi.LYELLOW,
)
return
current_host = player.spectating
if current_host:
if current_host == new_host:
# host hasn't changed, they didn't have
# the map but have downloaded it.
if not player.stealth:
# NOTE: `player` would have already received the other
# fellow spectators, so no need to resend them.
new_host.enqueue(app.packets.spectator_joined(player.id))
player_joined = app.packets.fellow_spectator_joined(player.id)
for spec in new_host.spectators:
if spec is not player:
spec.enqueue(player_joined)
return
current_host.remove_spectator(player)
new_host.add_spectator(player)
@register(ClientPackets.STOP_SPECTATING)
class StopSpectating(BasePacket):
async def handle(self, player: Player) -> None:
host = player.spectating
if not host:
log(f"{player} tried to stop spectating when they're not..?", Ansi.LRED)
return
host.remove_spectator(player)
@register(ClientPackets.SPECTATE_FRAMES)
class SpectateFrames(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.frame_bundle = reader.read_replayframe_bundle()
async def handle(self, player: Player) -> None:
# ANTICHEAT: TODO: perform validations on the parsed frame bundle
# to ensure it's not being tamperated with or weaponized.
# This could improve our detection of timewarp.
# NOTE: this is given a fastpath here for efficiency due to the
# sheer rate of usage of these packets in spectator mode.
# data = app.packets.spectateFrames(self.frame_bundle.raw_data)
data = (
struct.pack("<HxI", 15, len(self.frame_bundle.raw_data))
+ self.frame_bundle.raw_data
)
# enqueue the data
# to all spectators.
for spectator in player.spectators:
spectator.enqueue(data)
@register(ClientPackets.CANT_SPECTATE)
class CantSpectate(BasePacket):
async def handle(self, player: Player) -> None:
if not player.spectating:
log(f"{player} sent can't spectate while not spectating?", Ansi.LRED)
return
if not player.stealth:
data = app.packets.spectator_cant_spectate(player.id)
host = player.spectating
host.enqueue(data)
for t in host.spectators:
t.enqueue(data)
@register(ClientPackets.SEND_PRIVATE_MESSAGE)
class SendPrivateMessage(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.msg = reader.read_message()
async def handle(self, player: Player) -> None:
if player.silenced:
if app.settings.DEBUG:
log(f"{player} tried to send a DM while silenced.", Ansi.LYELLOW)
return
# remove leading/trailing whitespace
msg = self.msg.text.strip()
if not msg:
return
target_name = self.msg.recipient
# allow this to get from sql - players can receive
# messages offline, due to the mail system. B)
target = await app.state.sessions.players.from_cache_or_sql(name=target_name)
if not target:
if app.settings.DEBUG:
log(
f"{player} tried to write to non-existent user {target_name}.",
Ansi.LYELLOW,
)
return
if player.id in target.blocks:
player.enqueue(app.packets.user_dm_blocked(target_name))
if app.settings.DEBUG:
log(f"{player} tried to message {target}, but they have them blocked.")
return
if target.pm_private and player.id not in target.friends:
player.enqueue(app.packets.user_dm_blocked(target_name))
if app.settings.DEBUG:
log(f"{player} tried to message {target}, but they are blocking dms.")
return
if target.silenced:
# if target is silenced, inform player.
player.enqueue(app.packets.target_silenced(target_name))
if app.settings.DEBUG:
log(f"{player} tried to message {target}, but they are silenced.")
return
# limit message length to 2k chars
# perhaps this could be dangerous with !py..?
if len(msg) > 2000:
msg = f"{msg[:2000]}... (truncated)"
player.enqueue(
app.packets.notification(
"Your message was truncated\n(exceeded 2000 characters).",
),
)
if target.status.action == Action.Afk and target.away_msg:
# send away message if target is afk and has one set.
player.send(target.away_msg, sender=target)
if target is not app.state.sessions.bot:
# target is not bot, send the message normally if online
if target.is_online:
target.send(msg, sender=player)
else:
# inform user they're offline, but
# will receive the mail @ next login.
player.enqueue(
app.packets.notification(
f"{target.name} is currently offline, but will "
"receive your messsage on their next login.",
),
)
# insert mail into db, marked as unread.
await mail_repo.create(
from_id=player.id,
to_id=target.id,
msg=msg,
)
else:
# messaging the bot, check for commands & /np.
if msg.startswith(app.settings.COMMAND_PREFIX):
cmd = await commands.process_commands(player, target, msg)
else:
cmd = None
if cmd:
# command triggered, send response if any.
if cmd["resp"] is not None:
player.send(cmd["resp"], sender=target)
else:
# no commands triggered.
r_match = NOW_PLAYING_RGX.match(msg)
if r_match:
# user is /np'ing a map.
# save it to their player instance
# so we can use this elsewhere.
bmap = await Beatmap.from_bid(int(r_match["bid"]))
if bmap:
# parse mode_vn int from regex
if r_match["mode_vn"] is not None:
mode_vn = {"Taiko": 1, "CatchTheBeat": 2, "osu!mania": 3}[
r_match["mode_vn"]
]
else:
# use player mode if not specified
mode_vn = player.status.mode.as_vanilla
# parse the mods from regex
mods = None
if r_match["mods"] is not None:
mods = Mods.from_np(r_match["mods"][1:], mode_vn)
player.last_np = {
"bmap": bmap,
"mode_vn": mode_vn,
"mods": mods,
"timeout": time.time() + 300, # /np's last 5mins
}
# calculate generic pp values from their /np
osu_file_available = await ensure_osu_file_is_available(
bmap.id,
expected_md5=bmap.md5,
)
if not osu_file_available:
resp_msg = (
"Mapfile could not be found; "
"this incident has been reported."
)
else:
# calculate pp for common generic values
pp_calc_st = time.time_ns()
mods = None
if r_match["mods"] is not None:
# [1:] to remove leading whitespace
mods_str = r_match["mods"][1:]
mods = Mods.from_np(mods_str, mode_vn)
scores = [
ScoreParams(
mode=mode_vn,
mods=int(mods) if mods else None,
acc=acc,
)
for acc in app.settings.PP_CACHED_ACCURACIES
]
results = app.usecases.performance.calculate_performances(
osu_file_path=str(BEATMAPS_PATH / f"{bmap.id}.osu"),
scores=scores,
)
resp_msg = " | ".join(
f"{acc}%: {result['performance']['pp']:,.2f}pp"
for acc, result in zip(
app.settings.PP_CACHED_ACCURACIES,
results,
)
)
elapsed = time.time_ns() - pp_calc_st
resp_msg += f" | Elapsed: {magnitude_fmt_time(elapsed)}"
else:
resp_msg = "Could not find map."
# time out their previous /np
player.last_np = None
player.send(resp_msg, sender=target)
player.update_latest_activity_soon()
log(f"{player} @ {target}: {msg}", Ansi.LCYAN)
with open(DISK_CHAT_LOG_FILE, "a+") as f:
f.write(
f"[{get_timestamp(full=True, tz=ZoneInfo('GMT'))}] {player} @ {target}: {msg}\n",
)
@register(ClientPackets.PART_LOBBY)
class LobbyPart(BasePacket):
async def handle(self, player: Player) -> None:
player.in_lobby = False
@register(ClientPackets.JOIN_LOBBY)
class LobbyJoin(BasePacket):
async def handle(self, player: Player) -> None:
player.in_lobby = True
for match in app.state.sessions.matches:
if match is not None:
try:
player.enqueue(app.packets.new_match(match))
except ValueError:
log(
f"Failed to send match {match.id} to player joining lobby; likely due to missing host",
Ansi.LYELLOW,
)
stacktrace = app.utils.get_appropriate_stacktrace()
await app.state.services.log_strange_occurrence(stacktrace)
continue
def validate_match_data(
untrusted_match_data: app.packets.MultiplayerMatch,
expected_host_id: int,
) -> bool:
return all(
(
untrusted_match_data.host_id == expected_host_id,
len(untrusted_match_data.name) <= MAX_MATCH_NAME_LENGTH,
),
)
@register(ClientPackets.CREATE_MATCH)
class MatchCreate(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.match_data = reader.read_match()
async def handle(self, player: Player) -> None:
if not validate_match_data(self.match_data, expected_host_id=player.id):
log(f"{player} tried to create a match with invalid data.", Ansi.LYELLOW)
return
if player.restricted:
player.enqueue(
app.packets.match_join_fail()
+ app.packets.notification(
"Multiplayer is not available while restricted.",
),
)
return
if player.silenced:
player.enqueue(
app.packets.match_join_fail()
+ app.packets.notification(
"Multiplayer is not available while silenced.",
),
)
return
match_id = app.state.sessions.matches.get_free()
if match_id is None:
# failed to create match (match slots full).
player.send_bot("Failed to create match (no slots available).")
player.enqueue(app.packets.match_join_fail())
return
# create the channel and add it
# to the global channel list as
# an instanced channel.
chat_channel = Channel(
name=f"#multi_{match_id}",
topic=f"MID {match_id}'s multiplayer channel.",
auto_join=False,
instance=True,
)
match = Match(
id=match_id,
name=self.match_data.name,
password=self.match_data.passwd.removesuffix("//private"),
has_public_history=not self.match_data.passwd.endswith("//private"),
map_name=self.match_data.map_name,
map_id=self.match_data.map_id,
map_md5=self.match_data.map_md5,
host_id=self.match_data.host_id,
mode=GameMode(self.match_data.mode),
mods=Mods(self.match_data.mods),
win_condition=MatchWinConditions(self.match_data.win_condition),
team_type=MatchTeamTypes(self.match_data.team_type),
freemods=bool(self.match_data.freemods),
seed=self.match_data.seed,
chat_channel=chat_channel,
)
app.state.sessions.matches[match_id] = match
app.state.sessions.channels.append(chat_channel)
match.chat = chat_channel
player.update_latest_activity_soon()
player.join_match(match, self.match_data.passwd)
match.chat.send_bot(f"Match created by {player.name}.")
log(f"{player} created a new multiplayer match.")
@register(ClientPackets.JOIN_MATCH)
class MatchJoin(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.match_id = reader.read_i32()
self.match_passwd = reader.read_string()
async def handle(self, player: Player) -> None:
match = app.state.sessions.matches[self.match_id]
if not match:
log(f"{player} tried to join a non-existant mp lobby?")
player.enqueue(app.packets.match_join_fail())
return
if player.restricted:
player.enqueue(
app.packets.match_join_fail()
+ app.packets.notification(
"Multiplayer is not available while restricted.",
),
)
return
if player.silenced:
player.enqueue(
app.packets.match_join_fail()
+ app.packets.notification(
"Multiplayer is not available while silenced.",
),
)
return
player.update_latest_activity_soon()
player.join_match(match, self.match_passwd)
@register(ClientPackets.PART_MATCH)
class MatchPart(BasePacket):
async def handle(self, player: Player) -> None:
player.update_latest_activity_soon()
player.leave_match()
@register(ClientPackets.MATCH_CHANGE_SLOT)
class MatchChangeSlot(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.slot_id = reader.read_i32()
async def handle(self, player: Player) -> None:
if player.match is None:
return
# read new slot ID
if not 0 <= self.slot_id < 16:
return
if player.match.slots[self.slot_id].status != SlotStatus.open:
log(f"{player} tried to move into non-open slot.", Ansi.LYELLOW)
return
# swap with current slot.
slot = player.match.get_slot(player)
assert slot is not None
player.match.slots[self.slot_id].copy_from(slot)
slot.reset()
player.match.enqueue_state() # technically not needed for host?
@register(ClientPackets.MATCH_READY)
class MatchReady(BasePacket):
async def handle(self, player: Player) -> None:
if player.match is None:
return
slot = player.match.get_slot(player)
assert slot is not None
slot.status = SlotStatus.ready
player.match.enqueue_state(lobby=False)
@register(ClientPackets.MATCH_LOCK)
class MatchLock(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.slot_id = reader.read_i32()
async def handle(self, player: Player) -> None:
if player.match is None:
return
if player is not player.match.host:
log(f"{player} attempted to lock match as non-host.", Ansi.LYELLOW)
return
# read new slot ID
if not 0 <= self.slot_id < 16:
return
slot = player.match.slots[self.slot_id]
if slot.status == SlotStatus.locked:
slot.status = SlotStatus.open
else:
if slot.player is player.match.host:
# don't allow the match host to kick
# themselves by clicking their crown
return
if slot.player:
# uggggggh i hate trusting the osu! client
# man why is it designed like this
# TODO: probably going to end up changing
... # slot.reset()
slot.status = SlotStatus.locked
player.match.enqueue_state()
@register(ClientPackets.MATCH_CHANGE_SETTINGS)
class MatchChangeSettings(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.match_data = reader.read_match()
async def handle(self, player: Player) -> None:
if not validate_match_data(self.match_data, expected_host_id=player.id):
log(
f"{player} tried to change match settings with invalid data.",
Ansi.LYELLOW,
)
return
if player.match is None:
return
if player is not player.match.host:
log(f"{player} attempted to change settings as non-host.", Ansi.LYELLOW)
return
if self.match_data.freemods != player.match.freemods:
# freemods status has been changed.
player.match.freemods = self.match_data.freemods
if self.match_data.freemods:
# match mods -> active slot mods.
for slot in player.match.slots:
if slot.player is not None:
# the slot takes any non-speed
# changing mods from the match.
slot.mods = player.match.mods & ~SPEED_CHANGING_MODS
# keep only speed-changing mods.
player.match.mods &= SPEED_CHANGING_MODS
else:
# host mods -> match mods.
host = player.match.get_host_slot() # should always exist
assert host is not None
# the match keeps any speed-changing mods,
# and also takes any mods the host has enabled.
player.match.mods &= SPEED_CHANGING_MODS
player.match.mods |= host.mods
for slot in player.match.slots:
if slot.player is not None:
slot.mods = Mods.NOMOD
if self.match_data.map_id == -1:
# map being changed, unready players.
player.match.unready_players(expected=SlotStatus.ready)
player.match.prev_map_id = player.match.map_id
player.match.map_id = -1
player.match.map_md5 = ""
player.match.map_name = ""
elif player.match.map_id == -1:
if player.match.prev_map_id != self.match_data.map_id:
# new map has been chosen, send to match chat.
map_url = (
f"https://osu.{app.settings.DOMAIN}/b/{self.match_data.map_id}"
)
map_embed = f"[{map_url} {self.match_data.map_name}]"
player.match.chat.send_bot(f"Selected: {map_embed}.")
# use our serverside version if we have it, but
# still allow for users to pick unknown maps.
bmap = await Beatmap.from_md5(self.match_data.map_md5)
if bmap:
player.match.map_id = bmap.id
player.match.map_md5 = bmap.md5
player.match.map_name = bmap.full_name
player.match.mode = GameMode(player.match.host.status.mode.as_vanilla)
else:
player.match.map_id = self.match_data.map_id
player.match.map_md5 = self.match_data.map_md5
player.match.map_name = self.match_data.map_name
player.match.mode = GameMode(self.match_data.mode)
if player.match.team_type != self.match_data.team_type:
# if theres currently a scrim going on, only allow
# team type to change by using the !mp teams command.
if player.match.is_scrimming:
_team = ("head-to-head", "tag-coop", "team-vs", "tag-team-vs")[
self.match_data.team_type
]
msg = (
"Changing team type while scrimming will reset "
"the overall score - to do so, please use the "
f"!mp teams {_team} command."
)
player.match.chat.send_bot(msg)
else:
# find the new appropriate default team.
# defaults are (ffa: neutral, teams: red).
if self.match_data.team_type in (
MatchTeamTypes.head_to_head,
MatchTeamTypes.tag_coop,
):
new_t = MatchTeams.neutral
else:
new_t = MatchTeams.red
# change each active slots team to
# fit the correspoding team type.
for slot in player.match.slots:
if slot.player is not None:
slot.team = new_t
# change the matches'.
player.match.team_type = MatchTeamTypes(self.match_data.team_type)
if player.match.win_condition != self.match_data.win_condition:
# win condition changing; if `use_pp_scoring`
# is enabled, disable it. always use new cond.
if player.match.use_pp_scoring:
player.match.use_pp_scoring = False
player.match.win_condition = MatchWinConditions(
self.match_data.win_condition,
)
player.match.name = self.match_data.name
player.match.enqueue_state()
@register(ClientPackets.MATCH_START)
class MatchStart(BasePacket):
async def handle(self, player: Player) -> None:
if player.match is None:
return
if player is not player.match.host:
log(f"{player} attempted to start match as non-host.", Ansi.LYELLOW)
return
player.match.start()
@register(ClientPackets.MATCH_SCORE_UPDATE)
class MatchScoreUpdate(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.play_data = reader.read_raw()
async def handle(self, player: Player) -> None:
# this runs very frequently in matches,
# so it's written to run pretty quick.
if player.match is None:
return
slot_id = player.match.get_slot_id(player)
assert slot_id is not None
# if scorev2 is enabled, read an extra 8 bytes.
buf = bytearray(b"0\x00\x00")
buf += len(self.play_data).to_bytes(4, "little")
buf += self.play_data
buf[11] = slot_id
player.match.enqueue(bytes(buf), lobby=False)
@register(ClientPackets.MATCH_COMPLETE)
class MatchComplete(BasePacket):
async def handle(self, player: Player) -> None:
if player.match is None:
return
slot = player.match.get_slot(player)
assert slot is not None
slot.status = SlotStatus.complete
# check if there are any players that haven't finished.
if any([s.status == SlotStatus.playing for s in player.match.slots]):
return
# find any players just sitting in the multi room
# that have not been playing the map; they don't
# need to know all the players have completed, only
# the ones who are playing (just new match info).
not_playing = [
s.player.id
for s in player.match.slots
if s.player is not None and s.status != SlotStatus.complete
]
was_playing = [
s for s in player.match.slots if s.player and s.player.id not in not_playing
]
player.match.unready_players(expected=SlotStatus.complete)
player.match.reset_players_loaded_status()
player.match.in_progress = False
player.match.enqueue(
app.packets.match_complete(),
lobby=False,
immune=not_playing,
)
player.match.enqueue_state()
if player.match.is_scrimming:
# determine winner, update match points & inform players.
asyncio.create_task(player.match.update_matchpoints(was_playing))
@register(ClientPackets.MATCH_CHANGE_MODS)
class MatchChangeMods(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.mods = reader.read_i32()
async def handle(self, player: Player) -> None:
if player.match is None:
return
if player.match.freemods:
if player is player.match.host:
# allow host to set speed-changing mods.
player.match.mods = Mods(self.mods & SPEED_CHANGING_MODS)
# set slot mods
slot = player.match.get_slot(player)
assert slot is not None
slot.mods = Mods(self.mods & ~SPEED_CHANGING_MODS)
else:
if player is not player.match.host:
log(f"{player} attempted to change mods as non-host.", Ansi.LYELLOW)
return
# not freemods, set match mods.
player.match.mods = Mods(self.mods)
player.match.enqueue_state()
def is_playing(slot: Slot) -> bool:
return slot.status == SlotStatus.playing and not slot.loaded
@register(ClientPackets.MATCH_LOAD_COMPLETE)
class MatchLoadComplete(BasePacket):
async def handle(self, player: Player) -> None:
if player.match is None:
return
# our player has loaded in and is ready to play.
slot = player.match.get_slot(player)
assert slot is not None
slot.loaded = True
# check if all players are loaded,
# if so, tell all players to begin.
if not any(map(is_playing, player.match.slots)):
player.match.enqueue(app.packets.match_all_players_loaded(), lobby=False)
@register(ClientPackets.MATCH_NO_BEATMAP)
class MatchNoBeatmap(BasePacket):
async def handle(self, player: Player) -> None:
if player.match is None:
return
slot = player.match.get_slot(player)
assert slot is not None
slot.status = SlotStatus.no_map
player.match.enqueue_state(lobby=False)
@register(ClientPackets.MATCH_NOT_READY)
class MatchNotReady(BasePacket):
async def handle(self, player: Player) -> None:
if player.match is None:
return
slot = player.match.get_slot(player)
assert slot is not None
slot.status = SlotStatus.not_ready
player.match.enqueue_state(lobby=False)
@register(ClientPackets.MATCH_FAILED)
class MatchFailed(BasePacket):
async def handle(self, player: Player) -> None:
if player.match is None:
return
# find the player's slot id, and enqueue that
# they've failed to all other players in the match.
slot_id = player.match.get_slot_id(player)
assert slot_id is not None
player.match.enqueue(app.packets.match_player_failed(slot_id), lobby=False)
@register(ClientPackets.MATCH_HAS_BEATMAP)
class MatchHasBeatmap(BasePacket):
async def handle(self, player: Player) -> None:
if player.match is None:
return
slot = player.match.get_slot(player)
assert slot is not None
slot.status = SlotStatus.not_ready
player.match.enqueue_state(lobby=False)
@register(ClientPackets.MATCH_SKIP_REQUEST)
class MatchSkipRequest(BasePacket):
async def handle(self, player: Player) -> None:
if player.match is None:
return
slot = player.match.get_slot(player)
assert slot is not None
slot.skipped = True
player.match.enqueue(app.packets.match_player_skipped(player.id))
for slot in player.match.slots:
if slot.status == SlotStatus.playing and not slot.skipped:
return
# all users have skipped, enqueue a skip.
player.match.enqueue(app.packets.match_skip(), lobby=False)
@register(ClientPackets.CHANNEL_JOIN, restricted=True)
class ChannelJoin(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.name = reader.read_string()
async def handle(self, player: Player) -> None:
if self.name in IGNORED_CHANNELS:
return
channel = app.state.sessions.channels.get_by_name(self.name)
if not channel or not player.join_channel(channel):
log(f"{player} failed to join {self.name}.", Ansi.LYELLOW)
return
@register(ClientPackets.MATCH_TRANSFER_HOST)
class MatchTransferHost(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.slot_id = reader.read_i32()
async def handle(self, player: Player) -> None:
if player.match is None:
return
if player is not player.match.host:
log(f"{player} attempted to transfer host as non-host.", Ansi.LYELLOW)
return
# read new slot ID
if not 0 <= self.slot_id < 16:
return
target = player.match.slots[self.slot_id].player
if not target:
log(f"{player} tried to transfer host to an empty slot?")
return
player.match.host_id = target.id
player.match.host.enqueue(app.packets.match_transfer_host())
player.match.enqueue_state()
@register(ClientPackets.TOURNAMENT_MATCH_INFO_REQUEST)
class TourneyMatchInfoRequest(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.match_id = reader.read_i32()
async def handle(self, player: Player) -> None:
if not 0 <= self.match_id < 64:
return # invalid match id
if not player.priv & Privileges.DONATOR:
return # insufficient privs
match = app.state.sessions.matches[self.match_id]
if not match:
return # match not found
player.enqueue(app.packets.update_match(match, send_pw=False))
@register(ClientPackets.TOURNAMENT_JOIN_MATCH_CHANNEL)
class TourneyMatchJoinChannel(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.match_id = reader.read_i32()
async def handle(self, player: Player) -> None:
if not 0 <= self.match_id < 64:
return # invalid match id
if not player.priv & Privileges.DONATOR:
return # insufficient privs
match = app.state.sessions.matches[self.match_id]
if not match:
return # match not found
for slot in match.slots:
if slot.player is not None:
if player.id == slot.player.id:
return # playing in the match
# attempt to join match chan
if player.join_channel(match.chat):
match.tourney_clients.add(player.id)
@register(ClientPackets.TOURNAMENT_LEAVE_MATCH_CHANNEL)
class TourneyMatchLeaveChannel(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.match_id = reader.read_i32()
async def handle(self, player: Player) -> None:
if not 0 <= self.match_id < 64:
return # invalid match id
if not player.priv & Privileges.DONATOR:
return # insufficient privs
match = app.state.sessions.matches[self.match_id]
if not (match and player.id in match.tourney_clients):
return # match not found
# attempt to join match chan
player.leave_channel(match.chat)
match.tourney_clients.remove(player.id)
@register(ClientPackets.FRIEND_ADD)
class FriendAdd(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.user_id = reader.read_i32()
async def handle(self, player: Player) -> None:
target = app.state.sessions.players.get(id=self.user_id)
if not target:
log(f"{player} tried to add a user who is not online! ({self.user_id})")
return
if target is app.state.sessions.bot:
return
if target.id in player.blocks:
player.blocks.remove(target.id)
player.update_latest_activity_soon()
await player.add_friend(target)
@register(ClientPackets.FRIEND_REMOVE)
class FriendRemove(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.user_id = reader.read_i32()
async def handle(self, player: Player) -> None:
target = app.state.sessions.players.get(id=self.user_id)
if not target:
log(f"{player} tried to remove a user who is not online! ({self.user_id})")
return
if target is app.state.sessions.bot:
return
player.update_latest_activity_soon()
await player.remove_friend(target)
@register(ClientPackets.MATCH_CHANGE_TEAM)
class MatchChangeTeam(BasePacket):
async def handle(self, player: Player) -> None:
if player.match is None:
return
# toggle team
slot = player.match.get_slot(player)
assert slot is not None
if slot.team == MatchTeams.blue:
slot.team = MatchTeams.red
else:
slot.team = MatchTeams.blue
player.match.enqueue_state(lobby=False)
@register(ClientPackets.CHANNEL_PART, restricted=True)
class ChannelPart(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.name = reader.read_string()
async def handle(self, player: Player) -> None:
if self.name in IGNORED_CHANNELS:
return
channel = app.state.sessions.channels.get_by_name(self.name)
if not channel:
log(f"{player} failed to leave {self.name}.", Ansi.LYELLOW)
return
if player not in channel:
# user not in chan
return
# leave the chan server-side.
player.leave_channel(channel)
@register(ClientPackets.RECEIVE_UPDATES, restricted=True)
class ReceiveUpdates(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.value = reader.read_i32()
async def handle(self, player: Player) -> None:
if not 0 <= self.value < 3:
log(f"{player} tried to set his presence filter to {self.value}?")
return
player.pres_filter = PresenceFilter(self.value)
@register(ClientPackets.SET_AWAY_MESSAGE)
class SetAwayMessage(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.msg = reader.read_message()
async def handle(self, player: Player) -> None:
player.away_msg = self.msg.text
@register(ClientPackets.USER_STATS_REQUEST, restricted=True)
class StatsRequest(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.user_ids = reader.read_i32_list_i16l()
async def handle(self, player: Player) -> None:
unrestrcted_ids = [p.id for p in app.state.sessions.players.unrestricted]
is_online = lambda o: o in unrestrcted_ids and o != player.id
for online in filter(is_online, self.user_ids):
target = app.state.sessions.players.get(id=online)
if target:
if target is app.state.sessions.bot:
# optimization for bot since it's
# the most frequently requested user
packet = app.packets.bot_stats(target)
else:
packet = app.packets.user_stats(target)
player.enqueue(packet)
@register(ClientPackets.MATCH_INVITE)
class MatchInvite(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.user_id = reader.read_i32()
async def handle(self, player: Player) -> None:
if not player.match:
return
target = app.state.sessions.players.get(id=self.user_id)
if not target:
log(f"{player} tried to invite a user who is not online! ({self.user_id})")
return
if target is app.state.sessions.bot:
player.send_bot("I'm too busy!")
return
target.enqueue(app.packets.match_invite(player, target.name))
player.update_latest_activity_soon()
log(f"{player} invited {target} to their match.")
@register(ClientPackets.MATCH_CHANGE_PASSWORD)
class MatchChangePassword(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.match_data = reader.read_match()
async def handle(self, player: Player) -> None:
if not validate_match_data(self.match_data, expected_host_id=player.id):
log(
f"{player} tried to change match password with invalid data.",
Ansi.LYELLOW,
)
return
if player.match is None:
return
if player is not player.match.host:
log(f"{player} attempted to change pw as non-host.", Ansi.LYELLOW)
return
player.match.passwd = self.match_data.passwd
player.match.enqueue_state()
@register(ClientPackets.USER_PRESENCE_REQUEST)
class UserPresenceRequest(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.user_ids = reader.read_i32_list_i16l()
async def handle(self, player: Player) -> None:
for pid in self.user_ids:
target = app.state.sessions.players.get(id=pid)
if target:
if target is app.state.sessions.bot:
# optimization for bot since it's
# the most frequently requested user
packet = app.packets.bot_presence(target)
else:
packet = app.packets.user_presence(target)
player.enqueue(packet)
@register(ClientPackets.USER_PRESENCE_REQUEST_ALL)
class UserPresenceRequestAll(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.ingame_time = reader.read_i32()
async def handle(self, player: Player) -> None:
# NOTE: this packet is only used when there
# are >256 players visible to the client.
buffer = bytearray()
for player in app.state.sessions.players.unrestricted:
buffer += app.packets.user_presence(player)
player.enqueue(bytes(buffer))
@register(ClientPackets.TOGGLE_BLOCK_NON_FRIEND_DMS)
class ToggleBlockingDMs(BasePacket):
def __init__(self, reader: BanchoPacketReader) -> None:
self.value = reader.read_i32()
async def handle(self, player: Player) -> None:
player.pm_private = self.value == 1
player.update_latest_activity_soon()
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