Tulir Asokan
426 lines
18 KiB
Python
426 lines
18 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 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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from contextlib import contextmanager
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import markdown
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from matrix_client.errors import MatrixRequestError
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from telethon.errors import *
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from telethon.tl.types import *
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from telethon.tl.functions.contacts import SearchRequest
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from telethon.tl.functions.messages import ImportChatInviteRequest, CheckChatInviteRequest
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from telethon.tl.functions.channels import JoinChannelRequest
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from . import puppet as pu, portal as po
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command_handlers = {}
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def command_handler(func):
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command_handlers[func.__name__.replace("_", "")] = func
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return func
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class CommandHandler:
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def __init__(self, context):
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self.az, self.db, log, self.config = context
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self.log = log.getChild("commands")
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self.command_prefix = self.config["bridge.command_prefix"]
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self._room_id = None
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self._is_management = False
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self._is_portal = False
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# region Utility functions for handling commands
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def handle(self, room, sender, command, args, is_management, is_portal):
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with self.handler(sender, room, command, args, is_management, is_portal) as handle_command:
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try:
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handle_command(self, sender, args)
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except:
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self.reply("Fatal error while handling command. Check logs for more details.")
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self.log.exception(f"Fatal error handling command "
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+ f"'$cmdprefix {command} {''.join(args)}' from {sender.mxid}")
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@contextmanager
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def handler(self, sender, room, command, args, is_management, is_portal):
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command = command.lower()
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self._room_id = room
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try:
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command = command_handlers[command]
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except KeyError:
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if sender.command_status and "next" in sender.command_status:
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args.insert(0, command)
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command = sender.command_status["next"]
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else:
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command = self.unknown_command
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self._is_management = is_management
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self._is_portal = is_portal
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yield command
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self._is_management = None
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self._is_portal = None
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self._room_id = None
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def reply(self, message, allow_html=False, render_markdown=True):
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if not self._room_id:
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raise AttributeError("the reply function can only be used from within"
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"the `CommandHandler.run` context manager")
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message = message.replace("$cmdprefix+sp ",
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"" if self._is_management else f"{self.command_prefix} ")
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message = message.replace("$cmdprefix", self.command_prefix)
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html = None
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if render_markdown:
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html = markdown.markdown(message, safe_mode="escape" if allow_html else False)
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elif allow_html:
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html = message
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self.az.intent.send_notice(self._room_id, message, html=html)
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# endregion
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# region Command handlers
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@command_handler
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def ping(self, sender, args):
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if not sender.logged_in:
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return self.reply("You're not logged in.")
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me = sender.client.get_me()
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if me:
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return self.reply(f"You're logged in as @{me.username}")
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else:
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return self.reply("You're not logged in.")
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# region Authentication commands
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@command_handler
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def register(self, sender, args):
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self.reply("Not yet implemented.")
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@command_handler
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def login(self, sender, args):
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if not self._is_management:
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return self.reply(
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"`login` is a restricted command: you may only run it in management rooms.")
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elif sender.logged_in:
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return self.reply("You are already logged in.")
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elif len(args) == 0:
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return self.reply("**Usage:** `$cmdprefix+sp login <phone number>`")
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phone_number = args[0]
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sender.client.send_code_request(phone_number)
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sender.client.sign_in(phone_number)
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sender.command_status = {
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"next": command_handlers["enter_code"],
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"action": "Login",
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}
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return self.reply(f"Login code sent to {phone_number}. Please send the code here.")
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@command_handler
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def enter_code(self, sender, args):
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if not sender.command_status:
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return self.reply("Request a login code first with `$cmdprefix+sp login <phone>`")
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elif len(args) == 0:
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return self.reply("**Usage:** `$cmdprefix+sp enter_code <code>")
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try:
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user = sender.client.sign_in(code=args[0])
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sender.post_login(user)
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sender.command_status = None
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return self.reply(f"Successfully logged in as @{user.username}")
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except PhoneNumberUnoccupiedError:
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return self.reply("That phone number has not been registered."
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"Please register with `$cmdprefix+sp register <phone>`.")
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except PhoneCodeExpiredError:
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return self.reply(
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"Phone code expired. Try again with `$cmdprefix+sp login <phone>`.")
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except PhoneCodeInvalidError:
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return self.reply("Invalid phone code.")
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except PhoneNumberAppSignupForbiddenError:
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return self.reply(
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"Your phone number does not allow 3rd party apps to sign in.")
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except PhoneNumberFloodError:
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return self.reply(
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"Your phone number has been temporarily blocked for flooding. "
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"The block is usually applied for around a day.")
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except PhoneNumberBannedError:
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return self.reply("Your phone number has been banned from Telegram.")
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except SessionPasswordNeededError:
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sender.command_status = {
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"next": command_handlers["enter_password"],
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"action": "Login (password entry)",
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}
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return self.reply("Your account has two-factor authentication."
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"Please send your password here.")
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except:
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self.log.exception()
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return self.reply("Unhandled exception while sending code."
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"Check console for more details.")
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@command_handler
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def enter_password(self, sender, args):
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if not sender.command_status:
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return self.reply("Request a login code first with `$cmdprefix+sp login <phone>`")
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elif len(args) == 0:
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return self.reply("**Usage:** `$cmdprefix+sp enter_password <password>")
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try:
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user = sender.client.sign_in(password=args[0])
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sender.post_login(user)
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sender.command_status = None
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return self.reply(f"Successfully logged in as @{user.username}")
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except PasswordHashInvalidError:
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return self.reply("Incorrect password.")
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except:
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self.log.exception()
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return self.reply("Unhandled exception while sending password. "
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"Check console for more details.")
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@command_handler
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def logout(self, sender, args):
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if not sender.logged_in:
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return self.reply("You're not logged in.")
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if sender.log_out():
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return self.reply("Logged out successfully.")
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return self.reply("Failed to log out.")
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# endregion
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# region Telegram interaction commands
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@command_handler
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def search(self, sender, args):
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if len(args) == 0:
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return self.reply("**Usage:** `$cmdprefix+sp search [-r|--remote] <query>")
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elif not sender.logged_in:
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return self.reply("This command requires you to be logged in.")
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force_remote = False
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if args[0] in {"-r", "--remote"}:
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force_remote = True
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args.pop(0)
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query = " ".join(args)
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if len(query) < 5:
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return self.reply("Minimum length of query for remote search is 5 characters.")
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found = sender.client(SearchRequest(q=query, limit=10))
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print(found)
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# reply = ["**People:**", ""]
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reply = ["**Results from Telegram server:**", ""]
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for result in found.users:
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puppet = pu.Puppet.get(result.id)
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puppet.update_info(sender, result)
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reply.append(
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f"* [{puppet.displayname}](https://matrix.to/#/{puppet.mxid}): {puppet.id}")
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# reply.extend(("", "**Chats:**", ""))
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# for result in found.chats:
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# reply.append(f"* {result.title}")
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return self.reply("\n".join(reply))
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@command_handler
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def pm(self, sender, args):
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if len(args) == 0:
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return self.reply("**Usage:** `$cmdprefix+sp pm <user identifier>`")
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elif not sender.logged_in:
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return self.reply("This command requires you to be logged in.")
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user = sender.client.get_entity(args[0])
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if not user:
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return self.reply("User not found.")
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elif not isinstance(user, User):
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return self.reply("That doesn't seem to be a user.")
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portal = po.Portal.get_by_entity(user, sender.tgid)
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portal.create_matrix_room(sender, user, [sender.mxid])
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self.reply(f"Created private chat room with {pu.Puppet.get_displayname(user, False)}")
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@command_handler
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def invite_link(self, sender, args):
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if not sender.logged_in:
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return self.reply("This command requires you to be logged in.")
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portal = po.Portal.get_by_mxid(self._room_id)
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if not portal:
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return self.reply("This is not a portal room.")
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if portal.peer_type == "user":
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return self.reply("You can't invite users to private chats.")
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try:
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link = portal.get_invite_link(sender)
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return self.reply(f"Invite link to {portal.title}: {link}")
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except ValueError as e:
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return self.reply(e.args[0])
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except ChatAdminRequiredError:
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return self.reply("You don't have the permission to create an invite link.")
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@command_handler
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def delete_portal(self, sender, args):
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if not sender.logged_in:
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return self.reply("This command requires you to be logged in.")
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elif not sender.is_admin:
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return self.reply("This is command requires administrator privileges.")
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portal = po.Portal.get_by_mxid(self._room_id)
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if not portal:
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return self.reply("This is not a portal room.")
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for user in portal.main_intent.get_room_members(portal.mxid):
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if user != portal.main_intent.mxid:
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try:
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portal.main_intent.kick(portal.mxid, user, "Portal deleted.")
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except MatrixRequestError:
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pass
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portal.main_intent.leave_room(portal.mxid)
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portal.delete()
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def _strip_prefix(self, value, prefixes):
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for prefix in prefixes:
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if value.startswith(prefix):
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return value[len(prefix):]
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return value
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@command_handler
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def join(self, sender, args):
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if len(args) == 0:
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return self.reply("**Usage:** `$cmdprefix+sp join <invite link>")
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elif not sender.logged_in:
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return self.reply("This command requires you to be logged in.")
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regex = re.compile(r"(?:https?://)?t(?:elegram)?\.(?:dog|me)(?:joinchat/)?/(.+)")
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arg = regex.match(args[0])
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if not arg:
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return self.reply("That doesn't look like a Telegram invite link.")
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arg = arg.group(1)
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if arg.startswith("joinchat/"):
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invite_hash = arg[len("joinchat/"):]
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try:
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check = sender.client(CheckChatInviteRequest(invite_hash))
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print(check)
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except InviteHashInvalidError:
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return self.reply("Invalid invite link.")
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except InviteHashExpiredError:
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return self.reply("Invite link expired.")
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try:
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updates = sender.client(ImportChatInviteRequest(invite_hash))
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except UserAlreadyParticipantError:
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return self.reply("You are already in that chat.")
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else:
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channel = sender.client.get_entity(arg)
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if not channel:
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return self.reply("Channel/supergroup not found.")
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updates = sender.client(JoinChannelRequest(channel))
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for chat in updates.chats:
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portal = po.Portal.get_by_entity(chat)
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portal.create_matrix_room(sender, chat, [sender.mxid])
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self.reply(f"Created room for {portal.title}")
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@command_handler
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def create(self, sender, args):
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type = args[0] if len(args) > 0 else "group"
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if type not in {"chat", "group", "supergroup", "channel"}:
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return self.reply("**Usage:** `$cmdprefix+sp create [`group`/`supergroup`/`channel`]")
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elif not sender.logged_in:
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return self.reply("This command requires you to be logged in.")
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if po.Portal.get_by_mxid(self._room_id):
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return self.reply("This is already a portal room.")
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state = self.az.intent.get_room_state(self._room_id)
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title = None
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levels = None
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for event in state:
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if event["type"] == "m.room.name":
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title = event["content"]["name"]
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elif event["type"] == "m.room.power_levels":
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levels = event["content"]
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if not title:
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return self.reply("Please set a title before creating a Telegram chat.")
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elif (not levels or not levels["users"] or self.az.intent.mxid not in levels["users"] or
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levels["users"][self.az.intent.mxid] < 100):
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return self.reply(f"Please give "
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+ f"[the bridge bot](https://matrix.to/#/{self.az.intent.mxid}) "
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+ f"a power level of 100 before creating a Telegram chat.")
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else:
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for user, level in levels["users"].items():
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if level >= 100 and user != self.az.intent.mxid:
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return self.reply(f"Please make sure only the bridge bot has power level above"
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+ f"99 before creating a Telegram chat.\n\n"
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+ f"Use power level 95 instead of 100 for admins.")
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supergroup = type == "supergroup"
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types = {
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"supergroup": "channel",
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"channel": "channel",
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"chat": "chat",
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"group": "chat",
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}
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portal = po.Portal(tgid=None, mxid=self._room_id, title=title, peer_type=types[type])
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try:
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portal.create_telegram_chat(sender, supergroup=supergroup)
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except ValueError as e:
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return self.reply(e.args[0])
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self.reply(f"Telegram chat created. ID: {portal.tgid}")
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@command_handler
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def upgrade(self, sender, args):
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self.reply("Not yet implemented.")
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# endregion
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# region Command-related commands
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@command_handler
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def cancel(self, sender, args):
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if sender.command_status:
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action = sender.command_status["action"]
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sender.command_status = None
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return self.reply(f"{action} cancelled.")
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else:
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return self.reply("No ongoing command.")
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@command_handler
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def unknown_command(self, sender, args):
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if self._is_management:
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return self.reply("Unknown command. Try `help` for help.")
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else:
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return self.reply("Unknown command. Try `$cmdprefix help` for help.")
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@command_handler
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def help(self, sender, args):
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if self._is_management:
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management_status = ("This is a management room: prefixing commands"
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"with `$cmdprefix` is not required.\n")
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elif self._is_portal:
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management_status = ("**This is a portal room**: you must always"
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"prefix commands with `$cmdprefix`.\n"
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"Management commands will not be sent to Telegram.")
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else:
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management_status = ("**This is not a management room**: you must"
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"prefix commands with `$cmdprefix`.\n")
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help = """
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_**Generic bridge commands**: commands for using the bridge that aren't related to Telegram._
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**help** - Show this help message.
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**cancel** - Cancel an ongoing action (such as login).
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_**Telegram actions**: commands for using the bridge to interact with Telegram._
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**login** <_phone_> - Request an authentication code.
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**logout** - Log out from Telegram.
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**ping** - Check if you're logged into Telegram.
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**search** [_-r|--remote_] <_query_> - Search your contacts or the Telegram servers for users.
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**pm** <_identifier_> - Open a private chat with the given Telegram user. The identifier is either
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the internal user ID, the username or the phone number.
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**join** <_link_> - Join a chat with an invite link.
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**create** [_type_] - Create a Telegram chat of the given type for the current Matrix room.
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The type is either `group`, `supergroup` or `channel` (defaults to `group`).
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**upgrade** - Upgrade a normal Telegram group to a supergroup.
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**invitelink** - Get a Telegram invite link to the current chat.
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**deleteportal** - Forget the current portal room. Only works for group chats; to delete a private
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chat portal, simply leave the room.
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"""
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return self.reply(management_status + help)
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# endregion
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# endregion
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