Tulir Asokan
1f5261ff8f
The database now contains a displayname_source field which is the telegram user ID of the user whose point of view the displayname is from. Updates from the relaybot user always take precendence, but currently the relaybot will never automatically fetch displaynames.
267 lines
10 KiB
Python
267 lines
10 KiB
Python
# -*- coding: future_fstrings -*-
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# mautrix-telegram - A Matrix-Telegram puppeting bridge
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# Copyright (C) 2018 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 typing import Awaitable, Callable
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import logging
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import re
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from telethon.tl.types import *
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from telethon.tl.functions.messages import GetChatsRequest, GetFullChatRequest
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from telethon.tl.functions.channels import GetChannelsRequest, GetParticipantRequest
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from telethon.errors import ChannelInvalidError, ChannelPrivateError
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from .abstract_user import AbstractUser
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from .db import BotChat
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from . import puppet as pu, portal as po, user as u
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config = None
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ReplyFunc = Callable[[str], Awaitable[Message]]
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class Bot(AbstractUser):
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log = logging.getLogger("mau.bot")
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mxid_regex = re.compile("@.+:.+")
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def __init__(self, token: str):
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super().__init__()
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self.token = token
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self.whitelisted = True
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self.username = None
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self.is_relaybot = True
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self.chats = {chat.id: chat.type for chat in BotChat.query.all()}
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self.tg_whitelist = []
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self.whitelist_group_admins = config["bridge.relaybot.whitelist_group_admins"] or False
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async def init_permissions(self):
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whitelist = config["bridge.relaybot.whitelist"] or []
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for id in whitelist:
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if isinstance(id, str):
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entity = await self.client.get_input_entity(id)
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if isinstance(entity, InputUser):
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id = entity.user_id
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else:
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id = None
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if isinstance(id, int):
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self.tg_whitelist.append(id)
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async def start(self):
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await super().start()
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if not self.logged_in:
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await self.client.sign_in(bot_token=self.token)
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await self.post_login()
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return self
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async def post_login(self):
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await self.init_permissions()
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info = await self.client.get_me()
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self.tgid = info.id
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self.username = info.username
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self.mxid = pu.Puppet.get_mxid_from_id(self.tgid)
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chat_ids = [id for id, type in self.chats.items() if type == "chat"]
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response = await self.client(GetChatsRequest(chat_ids))
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for chat in response.chats:
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if isinstance(chat, ChatForbidden) or chat.left or chat.deactivated:
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self.remove_chat(chat.id)
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channel_ids = [InputChannel(id, 0)
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for id, type in self.chats.items()
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if type == "channel"]
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for id in channel_ids:
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try:
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await self.client(GetChannelsRequest([id]))
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except (ChannelPrivateError, ChannelInvalidError):
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self.remove_chat(id.channel_id)
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if config["bridge.catch_up"]:
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try:
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await self.client.catch_up()
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except Exception:
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self.log.exception("Failed to run catch_up() for bot")
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def register_portal(self, portal: po.Portal):
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self.add_chat(portal.tgid, portal.peer_type)
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def unregister_portal(self, portal: po.Portal):
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self.remove_chat(portal.tgid)
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def add_chat(self, id: int, type: str):
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if id not in self.chats:
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self.chats[id] = type
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self.db.add(BotChat(id=id, type=type))
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self.db.commit()
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def remove_chat(self, id: int):
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try:
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del self.chats[id]
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except KeyError:
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pass
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existing_chat = BotChat.query.get(id)
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if existing_chat:
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self.db.delete(existing_chat)
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self.db.commit()
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async def _can_use_commands(self, chat, tgid):
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if tgid in self.tg_whitelist:
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return True
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user = u.User.get_by_tgid(tgid)
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if user and user.is_admin:
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self.tg_whitelist.append(user.tgid)
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return True
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if self.whitelist_group_admins:
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if isinstance(chat, PeerChannel):
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p = await self.client(GetParticipantRequest(chat, tgid))
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return isinstance(p, (ChannelParticipantCreator, ChannelParticipantAdmin))
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elif isinstance(chat, PeerChat):
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chat = await self.client(GetFullChatRequest(chat.chat_id))
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participants = chat.full_chat.participants.participants
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for p in participants:
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if p.user_id == tgid:
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return isinstance(p, (ChatParticipantCreator, ChatParticipantAdmin))
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async def check_can_use_commands(self, event: Message, reply: ReplyFunc):
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if not await self._can_use_commands(event.to_id, event.from_id):
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await reply("You do not have the permission to use that command.")
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return False
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return True
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async def handle_command_portal(self, portal: po.Portal, reply: ReplyFunc):
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if not config["bridge.relaybot.authless_portals"]:
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return await reply("This bridge doesn't allow portal creation from Telegram.")
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await portal.create_matrix_room(self)
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if portal.mxid:
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if portal.username:
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return await reply(
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f"Portal is public: [{portal.alias}](https://matrix.to/#/{portal.alias})")
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else:
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return await reply(
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"Portal is not public. Use `/invite <mxid>` to get an invite.")
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async def handle_command_invite(self, portal: po.Portal, reply: ReplyFunc, mxid: str):
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if len(mxid) == 0:
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return await reply("Usage: `/invite <mxid>`")
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elif not portal.mxid:
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return await reply("Portal does not have Matrix room. "
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"Create one with /portal first.")
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if not self.mxid_regex.match(mxid):
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return await reply("That doesn't look like a Matrix ID.")
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user = await u.User.get_by_mxid(mxid).ensure_started()
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if not user.whitelisted:
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return await reply("That user is not whitelisted to use the bridge.")
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elif user.logged_in:
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displayname = f"@{user.username}" if user.username else user.displayname
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return await reply("That user seems to be logged in. "
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f"Just invite [{displayname}](tg://user?id={user.tgid})")
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else:
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await portal.main_intent.invite(portal.mxid, user.mxid)
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return await reply(f"Invited `{user.mxid}` to the portal.")
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def handle_command_id(self, message: Message, reply: ReplyFunc):
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# Provide the prefixed ID to the user so that the user wouldn't need to specify whether the
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# chat is a normal group or a supergroup/channel when using the ID.
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if isinstance(message.to_id, PeerChannel):
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return reply(f"-100{message.to_id.channel_id}")
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return reply(str(-message.to_id.chat_id))
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def match_command(self, text: str, command: str) -> bool:
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text = text.lower()
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command = f"/{command.lower()}"
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command_targeted = f"{command}@{self.username.lower()}"
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is_plain_command = text == command or text == command_targeted
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if is_plain_command:
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return True
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is_arg_command = text.startswith(command + " ") or text.startswith(command_targeted + " ")
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if is_arg_command:
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return True
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return False
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async def handle_command(self, message: Message):
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def reply(reply_text):
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return self.client.send_message(message.to_id, reply_text, markdown=True,
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reply_to=message.id)
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text = message.message
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if self.match_command(text, "id"):
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return await self.handle_command_id(message, reply)
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portal = po.Portal.get_by_entity(message.to_id)
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if self.match_command(text, "portal"):
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if not await self.check_can_use_commands(message, reply):
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return
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await self.handle_command_portal(portal, reply)
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elif self.match_command(text, "invite"):
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if not await self.check_can_use_commands(message, reply):
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return
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try:
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mxid = text[text.index(" ") + 1:]
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except ValueError:
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mxid = ""
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await self.handle_command_invite(portal, reply, mxid=mxid)
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def handle_service_message(self, message: MessageService):
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to_id = message.to_id
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if isinstance(to_id, PeerChannel):
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to_id = to_id.channel_id
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type = "channel"
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elif isinstance(to_id, PeerChat):
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to_id = to_id.chat_id
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type = "chat"
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else:
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return
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action = message.action
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if isinstance(action, MessageActionChatAddUser) and self.tgid in action.users:
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self.add_chat(to_id, type)
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elif isinstance(action, MessageActionChatDeleteUser) and action.user_id == self.tgid:
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self.remove_chat(to_id)
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async def update(self, update):
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if not isinstance(update, (UpdateNewMessage, UpdateNewChannelMessage)):
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return
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if isinstance(update.message, MessageService):
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return self.handle_service_message(update.message)
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is_command = (isinstance(update.message, Message)
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and update.message.entities and len(update.message.entities) > 0
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and isinstance(update.message.entities[0], MessageEntityBotCommand))
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if is_command:
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return await self.handle_command(update.message)
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def is_in_chat(self, peer_id) -> bool:
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return peer_id in self.chats
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@property
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def name(self) -> str:
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return "bot"
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def init(context):
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global config
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config = context.config
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token = config["telegram.bot_token"]
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if token and not token.lower().startswith("disable"):
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return Bot(token)
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return None
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