Tulir Asokan
427 lines
15 KiB
Python
427 lines
15 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 Awaitable, AsyncGenerator, AsyncIterable, TYPE_CHECKING, cast
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from difflib import SequenceMatcher
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import unicodedata
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from telethon.tl.types import (UserProfilePhoto, User, UpdateUserName, PeerUser, TypeInputPeer,
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InputPeerPhotoFileLocation, UserProfilePhotoEmpty, TypeInputUser)
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from yarl import URL
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from mautrix.appservice import IntentAPI
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from mautrix.errors import MatrixError
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from mautrix.bridge import BasePuppet, async_getter_lock
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from mautrix.types import UserID, SyncToken, RoomID, ContentURI
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from mautrix.util.simple_template import SimpleTemplate
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from .config import Config
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from .types import TelegramID
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from .db import Puppet as DBPuppet
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from . import util, portal as p, abstract_user as au
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if TYPE_CHECKING:
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from .__main__ import TelegramBridge
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class Puppet(DBPuppet, BasePuppet):
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config: Config
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hs_domain: str
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mxid_template: SimpleTemplate[TelegramID]
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displayname_template: SimpleTemplate[str]
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by_tgid: dict[TelegramID, Puppet] = {}
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by_custom_mxid: dict[UserID, Puppet] = {}
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def __init__(
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self,
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id: TelegramID,
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is_registered: bool = False,
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displayname: str | None = None,
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displayname_source: TelegramID | None = None,
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displayname_contact: bool = True,
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displayname_quality: int = 0,
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disable_updates: bool = False,
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username: str | None = None,
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photo_id: str | None = None,
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is_bot: bool = False,
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custom_mxid: UserID | None = None,
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access_token: str | None = None,
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next_batch: SyncToken | None = None,
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base_url: str | None = None
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) -> None:
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super().__init__(
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id=id,
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is_registered=is_registered,
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displayname=displayname,
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displayname_source=displayname_source,
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displayname_contact=displayname_contact,
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displayname_quality=displayname_quality,
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disable_updates=disable_updates,
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username=username,
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photo_id=photo_id,
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is_bot=is_bot,
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custom_mxid=custom_mxid,
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access_token=access_token,
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next_batch=next_batch,
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base_url=base_url,
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)
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self.default_mxid = self.get_mxid_from_id(self.id)
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self.default_mxid_intent = self.az.intent.user(self.default_mxid)
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self.intent = self._fresh_intent()
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self.by_tgid[id] = self
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if self.custom_mxid:
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self.by_custom_mxid[self.custom_mxid] = self
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self.log = self.log.getChild(str(self.id))
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@property
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def tgid(self) -> TelegramID:
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return self.id
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@property
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def tg_username(self) -> str | None:
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return self.username
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@property
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def peer(self) -> PeerUser:
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return PeerUser(user_id=self.tgid)
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@property
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def plain_displayname(self) -> str:
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return self.displayname_template.parse(self.displayname) or self.displayname
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def get_input_entity(self, user: au.AbstractUser) -> Awaitable[TypeInputPeer | TypeInputUser]:
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return user.client.get_input_entity(self.peer)
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def intent_for(self, portal: p.Portal) -> IntentAPI:
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if portal.tgid == self.tgid:
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return self.default_mxid_intent
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return self.intent
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@classmethod
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def init_cls(cls, bridge: 'TelegramBridge') -> AsyncIterable[Awaitable[None]]:
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cls.config = bridge.config
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cls.loop = bridge.loop
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cls.mx = bridge.matrix
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cls.az = bridge.az
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cls.hs_domain = cls.config["homeserver.domain"]
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mxid_tpl = SimpleTemplate(
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cls.config["bridge.username_template"],
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"userid",
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prefix="@",
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suffix=f":{Puppet.hs_domain}",
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type=int,
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)
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cls.mxid_template = cast(SimpleTemplate[TelegramID], mxid_tpl)
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cls.displayname_template = SimpleTemplate(
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cls.config["bridge.displayname_template"], "displayname"
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)
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cls.sync_with_custom_puppets = cls.config["bridge.sync_with_custom_puppets"]
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cls.homeserver_url_map = {server: URL(url) for server, url
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in cls.config["bridge.double_puppet_server_map"].items()}
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cls.allow_discover_url = cls.config["bridge.double_puppet_allow_discovery"]
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cls.login_shared_secret_map = {server: secret.encode("utf-8") for server, secret
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in cls.config["bridge.login_shared_secret_map"].items()}
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cls.login_device_name = "Telegram Bridge"
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return (puppet.try_start() async for puppet in cls.all_with_custom_mxid())
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# region Info updating
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def similarity(self, query: str) -> int:
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username_similarity = (SequenceMatcher(None, self.username, query).ratio()
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if self.username else 0)
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displayname_similarity = (SequenceMatcher(None, self.plain_displayname, query).ratio()
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if self.displayname else 0)
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similarity = max(username_similarity, displayname_similarity)
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return int(round(similarity * 100))
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@staticmethod
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def _filter_name(name: str) -> str:
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if not name:
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return ""
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whitespace = ("\t\n\r\v\f \u00a0\u034f\u180e\u2063\u202f\u205f\u2800\u3000\u3164\ufeff"
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"\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b"
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"\u200c\u200d\u200e\u200f\ufe0f")
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allowed_other_format = ("\u200d", "\u200c")
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name = "".join(c for c in name.strip(whitespace) if unicodedata.category(c) != 'Cf'
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or c in allowed_other_format)
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return name
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@classmethod
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def get_displayname(cls, info: User, enable_format: bool = True) -> tuple[str, int]:
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fn = cls._filter_name(info.first_name)
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ln = cls._filter_name(info.last_name)
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data = {
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"phone number": info.phone if hasattr(info, "phone") else None,
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"username": info.username,
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"full name": " ".join([fn, ln]).strip(),
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"full name reversed": " ".join([ln, fn]).strip(),
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"first name": fn,
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"last name": ln,
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}
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preferences = cls.config["bridge.displayname_preference"]
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name = None
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quality = 99
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for preference in preferences:
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name = data[preference]
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if name:
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break
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quality -= 1
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if isinstance(info, User) and info.deleted:
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name = f"Deleted account {info.id}"
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quality = 99
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elif not name:
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name = str(info.id)
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quality = 0
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return (cls.displayname_template.format_full(name) if enable_format else name), quality
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async def try_update_info(self, source: au.AbstractUser, info: User) -> None:
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try:
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await self.update_info(source, info)
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except Exception:
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source.log.exception(f"Failed to update info of {self.tgid}")
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async def update_info(self, source: au.AbstractUser, info: User) -> None:
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changed = False
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if self.username != info.username:
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self.username = info.username
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changed = True
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if not self.disable_updates:
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try:
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changed = await self.update_displayname(source, info) or changed
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changed = await self.update_avatar(source, info.photo) or changed
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except Exception:
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self.log.exception(f"Failed to update info from source {source.tgid}")
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self.is_bot = info.bot
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if changed:
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await self.save()
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async def update_displayname(self, source: au.AbstractUser, info: User | UpdateUserName
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) -> bool:
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if self.disable_updates:
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return False
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if source.is_relaybot or source.is_bot:
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allow_because = "user is bot"
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elif self.displayname_source == source.tgid:
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allow_because = "user is the primary source"
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elif not isinstance(info, UpdateUserName) and not info.contact:
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allow_because = "user is not a contact"
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elif not self.displayname_source:
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allow_because = "no primary source set"
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elif not self.displayname:
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allow_because = "user has no name"
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else:
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return False
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if isinstance(info, UpdateUserName):
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info = await source.client.get_entity(PeerUser(self.tgid))
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if not info.contact:
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self.displayname_contact = False
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elif not self.displayname_contact:
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if not self.displayname:
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self.displayname_contact = True
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else:
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return False
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displayname, quality = self.get_displayname(info)
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if displayname != self.displayname and quality >= self.displayname_quality:
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allow_because = f"{allow_because} and quality {quality} >= {self.displayname_quality}"
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self.log.debug(f"Updating displayname of {self.id} (src: {source.tgid}, allowed "
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f"because {allow_because}) from {self.displayname} to {displayname}")
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self.log.trace("Displayname source data: %s", info)
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self.displayname = displayname
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self.displayname_source = source.tgid
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self.displayname_quality = quality
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try:
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await self.default_mxid_intent.set_displayname(
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displayname[:self.config["bridge.displayname_max_length"]])
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except MatrixError:
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self.log.exception("Failed to set displayname")
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self.displayname = ""
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self.displayname_source = None
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self.displayname_quality = 0
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return True
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elif source.is_relaybot or self.displayname_source is None:
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self.displayname_source = source.tgid
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return True
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return False
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async def update_avatar(self, source: au.AbstractUser,
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photo: UserProfilePhoto | UserProfilePhotoEmpty) -> bool:
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if self.disable_updates:
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return False
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if photo is None or isinstance(photo, UserProfilePhotoEmpty):
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photo_id = ""
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elif isinstance(photo, UserProfilePhoto):
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photo_id = str(photo.photo_id)
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else:
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self.log.warning(f"Unknown user profile photo type: {type(photo)}")
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return False
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if not photo_id and not self.config["bridge.allow_avatar_remove"]:
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return False
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if self.photo_id != photo_id:
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if not photo_id:
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self.photo_id = ""
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try:
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await self.default_mxid_intent.set_avatar_url(ContentURI(""))
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except MatrixError:
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self.log.exception("Failed to set avatar")
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self.photo_id = ""
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return True
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loc = InputPeerPhotoFileLocation(
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peer=await self.get_input_entity(source),
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photo_id=photo.photo_id,
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big=True
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)
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file = await util.transfer_file_to_matrix(source.client, self.default_mxid_intent, loc)
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if file:
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self.photo_id = photo_id
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try:
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await self.default_mxid_intent.set_avatar_url(file.mxc)
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except MatrixError:
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self.log.exception("Failed to set avatar")
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self.photo_id = ""
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return True
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return False
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async def default_puppet_should_leave_room(self, room_id: RoomID) -> bool:
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portal: p.Portal = await p.Portal.get_by_mxid(room_id)
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return portal and not portal.backfill_lock.locked and portal.peer_type != "user"
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# endregion
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# region Getters
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def _add_to_cache(self) -> None:
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self.by_tgid[self.id] = self
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if self.custom_mxid:
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self.by_custom_mxid[self.custom_mxid] = self
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@classmethod
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@async_getter_lock
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async def get_by_tgid(cls, tgid: TelegramID, *, create: bool = True) -> Puppet | None:
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if tgid is None:
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return None
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try:
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return cls.by_tgid[tgid]
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except KeyError:
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pass
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puppet = cast(cls, await super().get_by_tgid(tgid))
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if puppet:
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puppet._add_to_cache()
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return puppet
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if create:
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puppet = cls(tgid)
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await puppet.insert()
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puppet._add_to_cache()
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return puppet
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return None
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@classmethod
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def get_by_mxid(cls, mxid: UserID, create: bool = True) -> Awaitable[Puppet | None]:
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return cls.get_by_tgid(cls.get_id_from_mxid(mxid), create=create)
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@classmethod
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@async_getter_lock
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async def get_by_custom_mxid(cls, mxid: UserID) -> Puppet | None:
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try:
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return cls.by_custom_mxid[mxid]
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except KeyError:
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pass
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puppet = cast(cls, await super().get_by_custom_mxid(mxid))
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if puppet:
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puppet._add_to_cache()
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return puppet
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return None
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@classmethod
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async def all_with_custom_mxid(cls) -> AsyncGenerator[Puppet, None]:
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puppets = await super().all_with_custom_mxid()
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puppet: cls
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for puppet in puppets:
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try:
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yield cls.by_tgid[puppet.tgid]
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except KeyError:
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puppet._add_to_cache()
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yield puppet
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@classmethod
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def get_id_from_mxid(cls, mxid: UserID) -> TelegramID | None:
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return cls.mxid_template.parse(mxid)
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@classmethod
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def get_mxid_from_id(cls, tgid: TelegramID) -> UserID:
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return UserID(cls.mxid_template.format_full(tgid))
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@classmethod
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async def find_by_username(cls, username: str) -> Puppet | None:
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if not username:
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return None
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username = username.lower()
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for _, puppet in cls.by_tgid.items():
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if puppet.username and puppet.username.lower() == username:
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return puppet
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puppet = cast(cls, await super().find_by_username(username))
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if puppet:
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try:
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return cls.by_tgid[puppet.tgid]
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except KeyError:
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puppet._add_to_cache()
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return puppet
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return None
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@classmethod
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async def find_by_displayname(cls, displayname: str) -> Puppet | None:
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if not displayname:
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return None
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for _, puppet in cls.by_tgid.items():
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if puppet.displayname and puppet.displayname == displayname:
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return puppet
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puppet = cast(cls, await super().find_by_displayname(displayname))
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if puppet:
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try:
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return cls.by_tgid[puppet.tgid]
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except KeyError:
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puppet._add_to_cache()
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return puppet
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return None
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# endregion
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