Tulir Asokan
539 lines
23 KiB
Python
539 lines
23 KiB
Python
# mautrix-telegram - A Matrix-Telegram puppeting bridge
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# Copyright (C) 2021 Tulir Asokan
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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from __future__ import annotations
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from typing import Type, Any, Union, TYPE_CHECKING
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from abc import ABC, abstractmethod
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import platform
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import asyncio
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import logging
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import time
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from telethon.sessions import Session
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from telethon.network import (ConnectionTcpMTProxyRandomizedIntermediate, ConnectionTcpFull,
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Connection)
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from telethon.tl.patched import MessageService, Message
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from telethon.tl.types import (
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Channel, Chat, MessageActionChannelMigrateFrom, PeerUser, TypeUpdate, UpdatePinnedMessages,
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UpdatePinnedChannelMessages, UpdateChatParticipantAdmin, UpdateChatParticipants, PeerChat,
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UpdateChatUserTyping, UpdateDeleteChannelMessages, UpdateNewMessage, UpdateDeleteMessages,
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UpdateEditChannelMessage, UpdateEditMessage, UpdateNewChannelMessage, UpdateReadHistoryOutbox,
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UpdateShortChatMessage, UpdateShortMessage, UpdateUserName, UpdateUserPhoto, UpdateUserStatus,
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UpdateUserTyping, User, UserStatusOffline, UserStatusOnline, UpdateReadHistoryInbox,
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UpdateReadChannelInbox, MessageEmpty, UpdateFolderPeers, UpdatePinnedDialogs,
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UpdateNotifySettings, UpdateChannelUserTyping)
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from mautrix.types import UserID, PresenceState
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from mautrix.errors import MatrixError
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from mautrix.appservice import AppService
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from mautrix.util.logging import TraceLogger
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from mautrix.util.opt_prometheus import Histogram, Counter
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from . import portal as po, puppet as pu, __version__
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from .db import Message as DBMessage, PgSession
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from .types import TelegramID
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from .tgclient import MautrixTelegramClient
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from .config import Config
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if TYPE_CHECKING:
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from .bot import Bot
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from .__main__ import TelegramBridge
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UpdateMessage = Union[UpdateShortChatMessage, UpdateShortMessage, UpdateNewChannelMessage,
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UpdateNewMessage, UpdateEditMessage, UpdateEditChannelMessage]
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UpdateMessageContent = Union[
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UpdateShortMessage, UpdateShortChatMessage, Message, MessageService, MessageEmpty
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]
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UPDATE_TIME = Histogram(
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name="bridge_telegram_update",
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documentation="Time spent processing Telegram updates",
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labelnames=("update_type",),
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)
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UPDATE_ERRORS = Counter(
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name="bridge_telegram_update_error",
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documentation="Number of fatal errors while handling Telegram updates",
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labelnames=("update_type",),
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)
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class AbstractUser(ABC):
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loop: asyncio.AbstractEventLoop = None
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log: TraceLogger
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az: AppService
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bridge: 'TelegramBridge'
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config: Config
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relaybot: 'Bot'
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ignore_incoming_bot_events: bool = True
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max_deletions: int = 10
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client: MautrixTelegramClient | None
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mxid: UserID | None
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tgid: TelegramID | None
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username: str | None
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is_bot: bool
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is_relaybot: bool
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puppet_whitelisted: bool
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whitelisted: bool
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relaybot_whitelisted: bool
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matrix_puppet_whitelisted: bool
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is_admin: bool
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def __init__(self) -> None:
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self.is_admin = False
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self.matrix_puppet_whitelisted = False
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self.puppet_whitelisted = False
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self.whitelisted = False
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self.relaybot_whitelisted = False
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self.client = None
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self.is_relaybot = False
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self.is_bot = False
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@property
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def connected(self) -> bool:
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return self.client and self.client.is_connected()
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@property
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def _proxy_settings(self) -> tuple[Type[Connection], tuple[Any, ...] | None]:
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proxy_type = self.config["telegram.proxy.type"].lower()
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connection = ConnectionTcpFull
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connection_data = (self.config["telegram.proxy.address"],
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self.config["telegram.proxy.port"],
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self.config["telegram.proxy.rdns"],
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self.config["telegram.proxy.username"],
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self.config["telegram.proxy.password"])
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if proxy_type == "disabled":
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connection_data = None
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elif proxy_type == "socks4":
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connection_data = (1,) + connection_data
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elif proxy_type == "socks5":
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connection_data = (2,) + connection_data
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elif proxy_type == "http":
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connection_data = (3,) + connection_data
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elif proxy_type == "mtproxy":
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connection = ConnectionTcpMTProxyRandomizedIntermediate
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connection_data = (connection_data[0], connection_data[1], connection_data[4])
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return connection, connection_data
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@classmethod
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def init_cls(cls, bridge: 'TelegramBridge') -> None:
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cls.bridge = bridge
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cls.config = bridge.config
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cls.loop = bridge.loop
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cls.az = bridge.az
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cls.ignore_incoming_bot_events = cls.config["bridge.relaybot.ignore_own_incoming_events"]
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cls.max_deletions = cls.config["bridge.max_telegram_delete"]
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async def _init_client(self) -> None:
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self.log.debug(f"Initializing client for {self.name}")
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session = await PgSession.get(self.name)
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if self.config["telegram.server.enabled"]:
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session.set_dc(self.config["telegram.server.dc"],
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self.config["telegram.server.ip"],
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self.config["telegram.server.port"])
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if self.is_relaybot:
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base_logger = logging.getLogger("telethon.relaybot")
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else:
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base_logger = logging.getLogger(f"telethon.{self.tgid or -hash(self.mxid)}")
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device = self.config["telegram.device_info.device_model"]
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sysversion = self.config["telegram.device_info.system_version"]
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appversion = self.config["telegram.device_info.app_version"]
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connection, proxy = self._proxy_settings
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assert isinstance(session, Session)
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self.client = MautrixTelegramClient(
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session=session,
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api_id=self.config["telegram.api_id"],
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api_hash=self.config["telegram.api_hash"],
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app_version=__version__ if appversion == "auto" else appversion,
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system_version=(MautrixTelegramClient.__version__
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if sysversion == "auto" else sysversion),
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device_model=(f"{platform.system()} {platform.release()}"
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if device == "auto" else device),
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timeout=self.config["telegram.connection.timeout"],
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connection_retries=self.config["telegram.connection.retries"],
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retry_delay=self.config["telegram.connection.retry_delay"],
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flood_sleep_threshold=self.config["telegram.connection.flood_sleep_threshold"],
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request_retries=self.config["telegram.connection.request_retries"],
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connection=connection,
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proxy=proxy,
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raise_last_call_error=True,
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loop=self.loop,
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base_logger=base_logger
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)
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self.client.add_event_handler(self._update_catch)
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@abstractmethod
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async def update(self, update: TypeUpdate) -> bool:
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return False
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@abstractmethod
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async def post_login(self) -> None:
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raise NotImplementedError()
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@abstractmethod
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async def register_portal(self, portal: po.Portal) -> None:
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raise NotImplementedError()
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@abstractmethod
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async def unregister_portal(self, tgid: int, tg_receiver: int) -> None:
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raise NotImplementedError()
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async def _update_catch(self, update: TypeUpdate) -> None:
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start_time = time.time()
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update_type = type(update).__name__
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try:
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if not await self.update(update):
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await self._update(update)
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except Exception:
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self.log.exception("Failed to handle Telegram update")
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UPDATE_ERRORS.labels(update_type=update_type).inc()
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UPDATE_TIME.labels(update_type=update_type).observe(time.time() - start_time)
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@property
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@abstractmethod
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def name(self) -> str:
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raise NotImplementedError()
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async def is_logged_in(self) -> bool:
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return (self.client and self.client.is_connected()
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and await self.client.is_user_authorized())
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async def has_full_access(self, allow_bot: bool = False) -> bool:
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return (self.puppet_whitelisted
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and (not self.is_bot or allow_bot)
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and await self.is_logged_in())
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async def start(self, delete_unless_authenticated: bool = False) -> AbstractUser:
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if not self.client:
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await self._init_client()
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await self.client.connect()
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self.log.debug(f"{'Bot' if self.is_relaybot else self.mxid} connected: {self.connected}")
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return self
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async def ensure_started(self, even_if_no_session=False) -> AbstractUser:
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if self.connected:
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return self
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if even_if_no_session or await PgSession.has(self.mxid):
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self.log.debug("Starting client due to ensure_started"
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f"(even_if_no_session={even_if_no_session})")
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await self.start(delete_unless_authenticated=not even_if_no_session)
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return self
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async def stop(self) -> None:
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await self.client.disconnect()
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self.client = None
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# region Telegram update handling
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async def _update(self, update: TypeUpdate) -> None:
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asyncio.create_task(self._handle_entity_updates(getattr(update, "_entities", {})))
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if isinstance(update, (UpdateShortChatMessage, UpdateShortMessage, UpdateNewChannelMessage,
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UpdateNewMessage, UpdateEditMessage, UpdateEditChannelMessage)):
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await self.update_message(update)
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elif isinstance(update, UpdateDeleteMessages):
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await self.delete_message(update)
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elif isinstance(update, UpdateDeleteChannelMessages):
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await self.delete_channel_message(update)
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elif isinstance(update, (UpdateChatUserTyping, UpdateChannelUserTyping, UpdateUserTyping)):
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await self.update_typing(update)
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elif isinstance(update, UpdateUserStatus):
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await self.update_status(update)
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elif isinstance(update, UpdateChatParticipantAdmin):
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await self.update_admin(update)
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elif isinstance(update, UpdateChatParticipants):
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await self.update_participants(update)
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elif isinstance(update, (UpdatePinnedMessages, UpdatePinnedChannelMessages)):
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await self.update_pinned_messages(update)
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elif isinstance(update, (UpdateUserName, UpdateUserPhoto)):
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await self.update_others_info(update)
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elif isinstance(update, UpdateReadHistoryOutbox):
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await self.update_read_receipt(update)
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elif isinstance(update, (UpdateReadHistoryInbox, UpdateReadChannelInbox)):
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await self.update_own_read_receipt(update)
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elif isinstance(update, UpdateFolderPeers):
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await self.update_folder_peers(update)
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elif isinstance(update, UpdatePinnedDialogs):
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await self.update_pinned_dialogs(update)
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elif isinstance(update, UpdateNotifySettings):
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await self.update_notify_settings(update)
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else:
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self.log.trace("Unhandled update: %s", update)
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async def update_folder_peers(self, update: UpdateFolderPeers) -> None:
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pass
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async def update_pinned_dialogs(self, update: UpdatePinnedDialogs) -> None:
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pass
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async def update_notify_settings(self, update: UpdateNotifySettings) -> None:
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pass
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async def update_pinned_messages(
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self, update: UpdatePinnedMessages | UpdatePinnedChannelMessages
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) -> None:
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if isinstance(update, UpdatePinnedMessages):
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portal = await po.Portal.get_by_entity(update.peer, tg_receiver=self.tgid)
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else:
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portal = await po.Portal.get_by_tgid(TelegramID(update.channel_id))
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if portal and portal.mxid:
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await portal.receive_telegram_pin_ids(update.messages, self.tgid,
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remove=not update.pinned)
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@staticmethod
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async def update_participants(update: UpdateChatParticipants) -> None:
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portal = await po.Portal.get_by_tgid(TelegramID(update.participants.chat_id))
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if portal and portal.mxid:
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await portal.update_power_levels(update.participants.participants)
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async def update_read_receipt(self, update: UpdateReadHistoryOutbox) -> None:
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if not isinstance(update.peer, PeerUser):
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self.log.debug("Unexpected read receipt peer: %s", update.peer)
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return
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portal = await po.Portal.get_by_tgid(
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TelegramID(update.peer.user_id), tg_receiver=self.tgid
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)
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if not portal or not portal.mxid:
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return
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# We check that these are user read receipts, so tg_space is always the user ID.
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message = await DBMessage.get_one_by_tgid(TelegramID(update.max_id), self.tgid,
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edit_index=-1)
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if not message:
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return
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puppet = await pu.Puppet.get_by_tgid(TelegramID(update.peer.user_id))
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await puppet.intent.mark_read(portal.mxid, message.mxid)
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async def update_own_read_receipt(
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self, update: UpdateReadHistoryInbox | UpdateReadChannelInbox
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) -> None:
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puppet = await pu.Puppet.get_by_tgid(self.tgid)
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if not puppet.is_real_user:
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return
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if isinstance(update, UpdateReadChannelInbox):
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portal = await po.Portal.get_by_tgid(TelegramID(update.channel_id))
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elif isinstance(update.peer, PeerChat):
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portal = await po.Portal.get_by_tgid(TelegramID(update.peer.chat_id))
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elif isinstance(update.peer, PeerUser):
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portal = await po.Portal.get_by_tgid(
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TelegramID(update.peer.user_id), tg_receiver=self.tgid
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)
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else:
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self.log.debug("Unexpected own read receipt peer: %s", update.peer)
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return
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if not portal or not portal.mxid:
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return
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tg_space = portal.tgid if portal.peer_type == "channel" else self.tgid
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message = await DBMessage.get_one_by_tgid(TelegramID(update.max_id), tg_space,
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edit_index=-1)
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if not message:
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return
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await puppet.intent.mark_read(portal.mxid, message.mxid)
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async def update_admin(self, update: UpdateChatParticipantAdmin) -> None:
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# TODO duplication not checked
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portal = await po.Portal.get_by_tgid(TelegramID(update.chat_id))
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if not portal or not portal.mxid:
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return
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await portal.set_telegram_admin(TelegramID(update.user_id))
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async def update_typing(
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self, update: UpdateUserTyping | UpdateChatUserTyping | UpdateChannelUserTyping
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) -> None:
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sender = None
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if isinstance(update, UpdateUserTyping):
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portal = await po.Portal.get_by_tgid(
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TelegramID(update.user_id), tg_receiver=self.tgid, peer_type="user"
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)
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sender = await pu.Puppet.get_by_tgid(TelegramID(update.user_id))
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elif isinstance(update, UpdateChannelUserTyping):
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portal = await po.Portal.get_by_tgid(TelegramID(update.channel_id))
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elif isinstance(update, UpdateChatUserTyping):
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portal = await po.Portal.get_by_tgid(TelegramID(update.chat_id))
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else:
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return
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if isinstance(update, (UpdateChannelUserTyping, UpdateChatUserTyping)):
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# Can typing notifications come from non-user peers?
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if not update.from_id.user_id:
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return
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sender = await pu.Puppet.get_by_tgid(TelegramID(update.from_id.user_id))
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if not sender or not portal or not portal.mxid:
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return
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await portal.handle_telegram_typing(sender, update)
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async def _handle_entity_updates(self, entities: dict[int, User | Chat | Channel]) -> None:
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try:
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users = (entity for entity in entities.values() if isinstance(entity, User))
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puppets = ((await pu.Puppet.get_by_tgid(TelegramID(user.id)), user) for user in users)
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await asyncio.gather(*[puppet.try_update_info(self, info)
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async for puppet, info in puppets if puppet])
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except Exception:
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self.log.exception("Failed to handle entity updates")
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async def update_others_info(self, update: UpdateUserName | UpdateUserPhoto) -> None:
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# TODO duplication not checked
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puppet = await pu.Puppet.get_by_tgid(TelegramID(update.user_id))
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if isinstance(update, UpdateUserName):
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puppet.username = update.username
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if await puppet.update_displayname(self, update):
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await puppet.save()
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elif isinstance(update, UpdateUserPhoto):
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if await puppet.update_avatar(self, update.photo):
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await puppet.save()
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else:
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self.log.warning(f"Unexpected other user info update: {type(update)}")
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async def update_status(self, update: UpdateUserStatus) -> None:
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puppet = await pu.Puppet.get_by_tgid(TelegramID(update.user_id))
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if isinstance(update.status, UserStatusOnline):
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await puppet.default_mxid_intent.set_presence(PresenceState.ONLINE)
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elif isinstance(update.status, UserStatusOffline):
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await puppet.default_mxid_intent.set_presence(PresenceState.OFFLINE)
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else:
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self.log.warning(f"Unexpected user status update: type({update})")
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return
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async def get_message_details(
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self, update: UpdateMessage
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) -> tuple[UpdateMessageContent, pu.Puppet | None, po.Portal | None]:
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if isinstance(update, UpdateShortChatMessage):
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portal = po.Portal.get_by_tgid(TelegramID(update.chat_id))
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if not portal:
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self.log.warning(f"Received message in chat with unknown type {update.chat_id}")
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sender = await pu.Puppet.get_by_tgid(TelegramID(update.from_id))
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elif isinstance(update, UpdateShortMessage):
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portal = await po.Portal.get_by_tgid(
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TelegramID(update.user_id), tg_receiver=self.tgid, peer_type="user"
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)
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sender = await pu.Puppet.get_by_tgid(self.tgid if update.out else update.user_id)
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elif isinstance(update, (UpdateNewMessage, UpdateNewChannelMessage,
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UpdateEditMessage, UpdateEditChannelMessage)):
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update = update.message
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if isinstance(update, MessageEmpty):
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return update, None, None
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portal = await po.Portal.get_by_entity(update.peer_id, tg_receiver=self.tgid)
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if update.out:
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sender = await pu.Puppet.get_by_tgid(self.tgid)
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elif isinstance(update.from_id, PeerUser):
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sender = await pu.Puppet.get_by_tgid(TelegramID(update.from_id.user_id))
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else:
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sender = None
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else:
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self.log.warning("Unexpected message type in User#get_message_details: "
|
|
f"{type(update)}")
|
|
return update, None, None
|
|
return update, sender, portal
|
|
|
|
@staticmethod
|
|
async def _try_redact(message: DBMessage) -> None:
|
|
portal = await po.Portal.get_by_mxid(message.mx_room)
|
|
if not portal:
|
|
return
|
|
try:
|
|
await portal.main_intent.redact(message.mx_room, message.mxid)
|
|
except MatrixError:
|
|
pass
|
|
|
|
async def delete_message(self, update: UpdateDeleteMessages) -> None:
|
|
if len(update.messages) > self.max_deletions:
|
|
return
|
|
|
|
for message_id in update.messages:
|
|
for message in await DBMessage.get_all_by_tgid(TelegramID(message_id), self.tgid):
|
|
if message.redacted:
|
|
continue
|
|
await message.delete()
|
|
number_left = await DBMessage.count_spaces_by_mxid(message.mxid, message.mx_room)
|
|
if number_left == 0:
|
|
await self._try_redact(message)
|
|
|
|
async def delete_channel_message(self, update: UpdateDeleteChannelMessages) -> None:
|
|
if len(update.messages) > self.max_deletions:
|
|
return
|
|
|
|
channel_id = TelegramID(update.channel_id)
|
|
|
|
for message_id in update.messages:
|
|
for message in await DBMessage.get_all_by_tgid(TelegramID(message_id), channel_id):
|
|
if message.redacted:
|
|
continue
|
|
await message.delete()
|
|
await self._try_redact(message)
|
|
|
|
async def update_message(self, original_update: UpdateMessage) -> None:
|
|
update, sender, portal = await self.get_message_details(original_update)
|
|
if not portal:
|
|
return
|
|
elif portal and not portal.allow_bridging:
|
|
self.log.debug(f"Ignoring message in portal {portal.tgid_log} (bridging disallowed)")
|
|
return
|
|
|
|
if self.is_relaybot:
|
|
if update.is_private:
|
|
if not self.config["bridge.relaybot.private_chat.invite"]:
|
|
self.log.debug(f"Ignoring private message to bot from {sender.id}")
|
|
return
|
|
elif not portal.mxid and self.config["bridge.relaybot.ignore_unbridged_group_chat"]:
|
|
self.log.debug("Ignoring message received by bot"
|
|
f" in unbridged chat {portal.tgid_log}")
|
|
return
|
|
|
|
if ((self.ignore_incoming_bot_events and self.relaybot
|
|
and sender and sender.id == self.relaybot.tgid)):
|
|
self.log.debug(f"Ignoring relaybot-sent message %s to %s", update.id, portal.tgid_log)
|
|
return
|
|
|
|
await portal.backfill_lock.wait(f"update {update.id}")
|
|
|
|
if isinstance(update, MessageService):
|
|
if isinstance(update.action, MessageActionChannelMigrateFrom):
|
|
self.log.trace(f"Received %s in %s by %d, unregistering portal...",
|
|
update.action, portal.tgid_log, sender.id)
|
|
await self.unregister_portal(update.action.chat_id, update.action.chat_id)
|
|
await self.register_portal(portal)
|
|
return
|
|
self.log.trace("Handling action %s to %s by %d", update.action, portal.tgid_log,
|
|
(sender.id if sender else 0))
|
|
return await portal.handle_telegram_action(self, sender, update)
|
|
|
|
if isinstance(original_update, (UpdateEditMessage, UpdateEditChannelMessage)):
|
|
return await portal.handle_telegram_edit(self, sender, update)
|
|
return await portal.handle_telegram_message(self, sender, update)
|
|
|
|
# endregion
|