# -*- coding: future_fstrings -*-
# mautrix-telegram - A Matrix-Telegram puppeting bridge
# Copyright (C) 2018 Tulir Asokan
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see .
from collections import deque
from datetime import datetime
from string import Template
from html import escape as escape_html
import asyncio
import random
import mimetypes
import unicodedata
import hashlib
import logging
import magic
from sqlalchemy.exc import IntegrityError, InvalidRequestError
from sqlalchemy.orm.exc import FlushError
from telethon.tl.functions.messages import *
from telethon.tl.functions.channels import *
from telethon.errors import *
from telethon.tl.types import *
from mautrix_appservice import MatrixRequestError, IntentError
from .db import Portal as DBPortal, Message as DBMessage
from . import puppet as p, user as u, formatter, util
mimetypes.init()
config = None
class Portal:
log = logging.getLogger("mau.portal")
db = None
az = None
bot = None
loop = None
filter_mode = None
filter_list = None
bridge_notices = False
alias_template = None
mx_alias_regex = None
hs_domain = None
by_mxid = {}
by_tgid = {}
def __init__(self, tgid, peer_type, tg_receiver=None, mxid=None, username=None,
megagroup=False, title=None, about=None, photo_id=None, db_instance=None):
self.mxid = mxid
self.tgid = tgid
self.tg_receiver = tg_receiver or tgid
self.peer_type = peer_type
self.username = username
self.megagroup = megagroup
self.title = title
self.about = about
self.photo_id = photo_id
self._db_instance = db_instance
self._main_intent = None
self._room_create_lock = asyncio.Lock()
self._temp_pinned_message_id = None
self._temp_pinned_message_sender = None
self._dedup = deque()
self._dedup_mxid = {}
self._dedup_action = deque()
self._send_locks = {}
if tgid:
self.by_tgid[self.tgid_full] = self
if mxid:
self.by_mxid[mxid] = self
# region Propegrties
@property
def tgid_full(self):
return self.tgid, self.tg_receiver
@property
def tgid_log(self):
if self.tgid == self.tg_receiver:
return self.tgid
return f"{self.tg_receiver}<->{self.tgid}"
@property
def peer(self):
if self.peer_type == "user":
return PeerUser(user_id=self.tgid)
elif self.peer_type == "chat":
return PeerChat(chat_id=self.tgid)
elif self.peer_type == "channel":
return PeerChannel(channel_id=self.tgid)
@property
def has_bot(self):
return self.bot and self.bot.is_in_chat(self.tgid)
@property
def main_intent(self):
if not self._main_intent:
direct = self.peer_type == "user"
puppet = p.Puppet.get(self.tgid) if direct else None
self._main_intent = puppet.intent if direct else self.az.intent
return self._main_intent
# endregion
# region Filtering
def allow_bridging(self, tgid=None):
tgid = tgid or self.tgid
if self.peer_type == "user":
return True
elif self.filter_mode == "whitelist":
return tgid in self.filter_list
elif self.filter_mode == "blacklist":
return tgid not in self.filter_list
return True
# endregion
# region Deduplication
@staticmethod
def _hash_event(event):
# Non-channel messages are unique per-user (wtf telegram), so we have no other choice than
# to deduplicate based on a hash of the message content.
# The timestamp is only accurate to the second, so we can't rely solely on that either.
if isinstance(event, MessageService):
hash_content = [event.date.timestamp(), event.from_id, event.action]
else:
hash_content = [event.date.timestamp(), event.message]
if event.fwd_from:
hash_content += [event.fwd_from.from_id, event.fwd_from.channel_id]
elif isinstance(event, Message) and event.media:
try:
hash_content += {
MessageMediaContact: lambda media: [media.user_id],
MessageMediaDocument: lambda media: [media.document.id],
MessageMediaPhoto: lambda media: [media.photo.id],
MessageMediaGeo: lambda media: [media.geo.long, media.geo.lat],
}[type(event.media)](event.media)
except KeyError:
pass
return hashlib.md5("-"
.join(str(a) for a in hash_content)
.encode("utf-8")
).hexdigest()
def is_duplicate_action(self, event):
hash = self._hash_event(event) if self.peer_type != "channel" else event.id
if hash in self._dedup_action:
return True
self._dedup_action.append(hash)
if len(self._dedup_action) > 20:
self._dedup_action.popleft()
return False
def update_duplicate(self, event, mxid=None, expected_mxid=None, force_hash=False):
hash = self._hash_event(event) if self.peer_type != "channel" or force_hash else event.id
try:
found_mxid = self._dedup_mxid[hash]
except KeyError:
return 0, "None"
if found_mxid != expected_mxid:
return found_mxid
self._dedup_mxid[hash] = mxid
return None
def is_duplicate(self, event, mxid=None, force_hash=False):
hash = self._hash_event(event) if self.peer_type != "channel" or force_hash else event.id
if hash in self._dedup:
return self._dedup_mxid[hash]
self._dedup_mxid[hash] = mxid
self._dedup.append(hash)
if len(self._dedup) > 20:
del self._dedup_mxid[self._dedup.popleft()]
return None
def get_input_entity(self, user):
return user.client.get_input_entity(self.peer)
# endregion
# region Matrix room info updating
async def invite_to_matrix(self, users):
if isinstance(users, str):
await self.main_intent.invite(self.mxid, users, check_cache=True)
elif isinstance(users, list):
for user in users:
await self.main_intent.invite(self.mxid, user, check_cache=True)
else:
raise ValueError("Invalid invite identifier given to invite_matrix()")
async def update_matrix_room(self, user, entity, direct, puppet=None,
levels=None, users=None, participants=None):
if not direct:
await self.update_info(user, entity)
if not users or not participants:
users, participants = await self._get_users(user, entity)
await self.sync_telegram_users(user, users)
await self.update_telegram_participants(participants, levels)
else:
if not puppet:
puppet = p.Puppet.get(self.tgid)
await puppet.update_info(user, entity)
await puppet.intent.join_room(self.mxid)
async def create_matrix_room(self, user, entity=None, invites=None, update_if_exists=True,
synchronous=False):
if self.mxid:
if update_if_exists:
if not entity:
entity = await user.client.get_entity(self.peer)
update = self.update_matrix_room(user, entity, self.peer_type == "user")
if synchronous:
await update
else:
asyncio.ensure_future(update, loop=self.loop)
await self.invite_to_matrix(invites or [])
return self.mxid
async with self._room_create_lock:
return await self._create_matrix_room(user, entity, invites)
async def _create_matrix_room(self, user, entity, invites):
direct = self.peer_type == "user"
if self.mxid:
return self.mxid
if not self.allow_bridging():
return None
if not entity:
entity = await user.client.get_entity(self.peer)
self.log.debug("Fetched data: %s", entity)
self.log.debug(f"Creating room for {self.tgid_log}")
try:
self.title = entity.title
except AttributeError:
self.title = None
puppet = p.Puppet.get(self.tgid) if direct else None
self._main_intent = puppet.intent if direct else self.az.intent
if self.peer_type == "channel":
self.megagroup = entity.megagroup
if self.peer_type == "channel" and entity.username:
public = config["bridge.public_portals"]
alias = self._get_alias_localpart(entity.username)
self.username = entity.username
else:
public = False
# TODO invite link alias?
alias = None
if alias:
# TODO? properly handle existing room aliases
await self.main_intent.remove_room_alias(alias)
power_levels = self._get_base_power_levels({}, entity)
users = participants = None
if not direct:
users, participants = await self._get_users(user, entity)
self._participants_to_power_levels(participants, power_levels)
initial_state = [{
"type": "m.room.power_levels",
"content": power_levels,
}]
room_id = await self.main_intent.create_room(alias=alias, is_public=public,
is_direct=direct, invitees=invites or [],
name=self.title, initial_state=initial_state)
if not room_id:
raise Exception(f"Failed to create room for {self.tgid_log}")
self.mxid = room_id
self.by_mxid[self.mxid] = self
self.save()
self.az.state_store.set_power_levels(self.mxid, power_levels)
user.register_portal(self)
asyncio.ensure_future(self.update_matrix_room(user, entity, direct, puppet,
levels=power_levels, users=users,
participants=participants),
loop=self.loop)
def _get_base_power_levels(self, levels=None, entity=None):
levels = levels or {}
power_level_requirement = (0 if self.peer_type == "chat" and not entity.admins_enabled
else 50)
levels["ban"] = 99
levels["invite"] = power_level_requirement if self.peer_type == "chat" else 75
if "events" not in levels:
levels["events"] = {}
levels["events"]["m.room.name"] = power_level_requirement
levels["events"]["m.room.avatar"] = power_level_requirement
levels["events"]["m.room.topic"] = 50 if self.peer_type == "channel" else 99
levels["events"]["m.room.power_levels"] = 75
levels["events"]["m.room.history_visibility"] = 75
levels["state_default"] = 50
levels["users_default"] = 0
levels["events_default"] = (50 if self.peer_type == "channel" and not entity.megagroup
else 0)
if "users" not in levels:
levels["users"] = {
self.main_intent.mxid: 100
}
else:
levels["users"][self.main_intent.mxid] = 100
return levels
@property
def alias(self):
if not self.username:
return None
return f"#{self._get_alias_localpart()}:{self.hs_domain}"
def _get_alias_localpart(self, username=None):
username = username or self.username
if not username:
return None
return self.alias_template.format(groupname=username)
def add_bot_chat(self, entity):
if self.bot and entity.id == self.bot.tgid:
self.bot.add_chat(self.tgid, self.peer_type)
return
user = u.User.get_by_tgid(entity.id)
if user and user.is_bot:
user.register_portal(self)
async def sync_telegram_users(self, source, users):
allowed_tgids = set()
for entity in users:
puppet = p.Puppet.get(entity.id)
if entity.bot:
self.add_bot_chat(entity)
allowed_tgids.add(entity.id)
await puppet.intent.ensure_joined(self.mxid)
await puppet.update_info(source, entity)
user = u.User.get_by_tgid(entity.id)
if user:
await self.invite_to_matrix(user.mxid)
# We can't trust the member list if any of the following cases is true:
# * There are close to 10 000 users, because Telegram might not be sending all members.
# * The member sync count is limited, because then we might ignore some members.
# * It's a channel, because non-admins don't have access to the member list.
trust_member_list = (len(allowed_tgids) < 9900
and config["bridge.max_initial_member_sync"] == -1
and (self.megagroup or self.peer_type != "channel"))
if trust_member_list:
joined_mxids = await self.main_intent.get_room_members(self.mxid)
for user in joined_mxids:
if user == self.az.bot_mxid:
continue
puppet_id = p.Puppet.get_id_from_mxid(user)
if puppet_id and puppet_id not in allowed_tgids:
if self.bot and puppet_id == self.bot.tgid:
self.bot.remove_chat(self.tgid)
await self.main_intent.kick(self.mxid, user,
"User had left this Telegram chat.")
continue
mx_user = u.User.get_by_mxid(user, create=False)
if mx_user and mx_user.is_bot and mx_user.tgid not in allowed_tgids:
mx_user.unregister_portal(self)
if mx_user and not self.has_bot and mx_user.tgid not in allowed_tgids:
await self.main_intent.kick(self.mxid, mx_user.mxid,
"You had left this Telegram chat.")
continue
async def add_telegram_user(self, user_id, source=None):
puppet = p.Puppet.get(user_id)
if source:
entity = await source.client.get_entity(PeerUser(user_id))
await puppet.update_info(source, entity)
await puppet.intent.join_room(self.mxid)
user = u.User.get_by_tgid(user_id)
if user:
user.register_portal(self)
await self.invite_to_matrix(user.mxid)
async def delete_telegram_user(self, user_id, sender):
puppet = p.Puppet.get(user_id)
user = u.User.get_by_tgid(user_id)
kick_message = (f"Kicked by {sender.displayname}"
if sender and sender.tgid != puppet.tgid
else "Left Telegram chat")
if sender and sender.tgid != puppet.tgid:
await self.main_intent.kick(self.mxid, puppet.mxid, kick_message)
else:
await puppet.intent.leave_room(self.mxid)
if user:
user.unregister_portal(self)
await self.main_intent.kick(self.mxid, user.mxid, kick_message)
async def update_info(self, user, entity=None):
if self.peer_type == "user":
self.log.warning(f"Called update_info() for direct chat portal {self.tgid_log}")
return
self.log.debug(f"Updating info of {self.tgid_log}")
if not entity:
entity = await user.client.get_entity(self.peer)
self.log.debug("Fetched data: %s", entity)
changed = False
if self.peer_type == "channel":
changed = await self.update_username(entity.username) or changed
# TODO update about text
# changed = self.update_about(entity.about) or changed
changed = await self.update_title(entity.title) or changed
if isinstance(entity.photo, ChatPhoto):
changed = await self.update_avatar(user, entity.photo.photo_big) or changed
if changed:
self.save()
async def update_username(self, username, save=False):
if self.username != username:
if self.username:
await self.main_intent.remove_room_alias(self._get_alias_localpart())
self.username = username or None
if self.username:
await self.main_intent.add_room_alias(self.mxid, self._get_alias_localpart())
if config["bridge.public_portals"]:
await self.main_intent.set_join_rule(self.mxid, "public")
else:
await self.main_intent.set_join_rule(self.mxid, "invite")
if save:
self.save()
return True
return False
async def update_about(self, about, save=False):
if self.about != about:
self.about = about
await self.main_intent.set_room_topic(self.mxid, self.about)
if save:
self.save()
return True
return False
async def update_title(self, title, save=False):
if self.title != title:
self.title = title
await self.main_intent.set_room_name(self.mxid, self.title)
if save:
self.save()
return True
return False
@staticmethod
def _get_largest_photo_size(photo):
return max(photo.sizes, key=(lambda photo2: (
len(photo2.bytes) if isinstance(photo2, PhotoCachedSize) else photo2.size)))
async def remove_avatar(self, user, save=False):
await self.main_intent.set_room_avatar(self.mxid, None)
self.photo_id = None
if save:
self.save()
async def update_avatar(self, user, photo, save=False):
photo_id = f"{photo.volume_id}-{photo.local_id}"
if self.photo_id != photo_id:
file = await util.transfer_file_to_matrix(self.db, user.client, self.main_intent,
photo)
if file:
await self.main_intent.set_room_avatar(self.mxid, file.mxc)
self.photo_id = photo_id
if save:
self.save()
return True
return False
async def _get_users(self, user, entity):
if self.peer_type == "chat":
chat = await user.client(GetFullChatRequest(chat_id=self.tgid))
return chat.users, chat.full_chat.participants.participants
elif self.peer_type == "channel":
limit = config["bridge.max_initial_member_sync"]
if limit == 0:
return [], []
try:
if 0 < limit <= 200:
response = await user.client(GetParticipantsRequest(
entity, ChannelParticipantsRecent(), offset=0, limit=limit, hash=0))
return response.users, response.participants
elif limit > 200 or limit == -1:
users, participants = [], []
offset = 0
remaining_quota = limit if limit > 0 else 1000000
query = (ChannelParticipantsSearch("") if limit == -1
else ChannelParticipantsRecent())
while True:
if remaining_quota <= 0:
break
response = await user.client(GetParticipantsRequest(
entity, query, offset=offset, limit=min(remaining_quota, 100), hash=0))
if not response.users:
break
participants += response.participants
users += response.users
offset += len(response.participants)
remaining_quota -= len(response.participants)
return users, participants
except ChatAdminRequiredError:
return [], []
elif self.peer_type == "user":
return [entity], []
async def get_invite_link(self, user):
if self.peer_type == "user":
raise ValueError("You can't invite users to private chats.")
elif self.peer_type == "chat":
link = await user.client(ExportChatInviteRequest(chat_id=self.tgid))
elif self.peer_type == "channel":
if self.username:
return f"https://t.me/{self.username}"
link = await user.client(
ExportInviteRequest(channel=await self.get_input_entity(user)))
else:
raise ValueError(f"Invalid peer type '{self.peer_type}' for invite link.")
if isinstance(link, ChatInviteEmpty):
raise ValueError("Failed to get invite link.")
return link.link
async def get_authenticated_matrix_users(self):
try:
members = await self.main_intent.get_room_members(self.mxid)
except MatrixRequestError:
return []
authenticated = []
has_bot = self.has_bot
for member in members:
if p.Puppet.get_id_from_mxid(member) or member == self.main_intent.mxid:
continue
user = await u.User.get_by_mxid(member).ensure_started()
if (has_bot and user.relaybot_whitelisted) or await user.has_full_access(
allow_bot=True):
authenticated.append(user)
return authenticated
@staticmethod
async def cleanup_room(intent, room_id, message="Portal deleted", puppets_only=False):
try:
members = await intent.get_room_members(room_id)
except MatrixRequestError:
members = []
for user in members:
puppet = p.Puppet.get_by_mxid(user, create=False)
if user != intent.mxid and (not puppets_only or puppet):
try:
if puppet:
await puppet.intent.leave_room(room_id)
else:
await intent.kick(room_id, user, message)
except (MatrixRequestError, IntentError):
pass
await intent.leave_room(room_id)
async def unbridge(self):
await self.cleanup_room(self.main_intent, self.mxid, "Room unbridged", puppets_only=True)
self.delete()
async def cleanup_and_delete(self):
await self.cleanup_room(self.main_intent, self.mxid)
self.delete()
# endregion
# region Matrix event handling
@staticmethod
def _get_file_meta(body, mime):
try:
current_extension = body[body.rindex("."):]
if mimetypes.types_map[current_extension] == mime:
return body
except (ValueError, KeyError):
pass
if mime:
return f"matrix_upload{mimetypes.guess_extension(mime)}"
else:
return ""
async def _get_state_change_message(self, event, user, arguments=None):
tpl = config[f"bridge.state_event_formats.{event}"]
if len(tpl) == 0:
# Empty format means they don't want the message
return None
displayname = await self.get_displayname(user)
tpl_args = dict(mxid=user.mxid,
username=user.mxid_localpart,
displayname=displayname)
tpl_args = {**tpl_args, **(arguments or {})}
message = Template(tpl).safe_substitute(tpl_args)
return {
"format": "org.matrix.custom.html",
"formatted_body": message,
}
async def name_change_matrix(self, user, displayname, prev_displayname, event_id):
async with self.require_send_lock(self.bot.tgid):
message = await self._get_state_change_message(
"name_change", user,
dict(displayname=displayname, prev_displayname=prev_displayname))
if not message:
return
response = await self.bot.client.send_message(
self.peer, message,
parse_mode=self._matrix_event_to_entities)
space = self.tgid if self.peer_type == "channel" else self.bot.tgid
self.is_duplicate(response, (event_id, space))
async def get_displayname(self, user):
return (await self.main_intent.get_displayname(self.mxid, user.mxid)
or user.mxid_localpart)
async def leave_matrix(self, user, source, event_id):
if await user.needs_relaybot(self):
async with self.require_send_lock(self.bot.tgid):
message = await self._get_state_change_message("leave", user)
if not message:
return
response = await self.bot.client.send_message(
self.peer, message,
parse_mode=self._matrix_event_to_entities)
space = self.tgid if self.peer_type == "channel" else self.bot.tgid
self.is_duplicate(response, (event_id, space))
return
if self.peer_type == "user":
await self.main_intent.leave_room(self.mxid)
self.delete()
try:
del self.by_tgid[self.tgid_full]
del self.by_mxid[self.mxid]
except KeyError:
pass
elif source and source.tgid != user.tgid:
if self.peer_type == "chat":
await source.client(DeleteChatUserRequest(chat_id=self.tgid, user_id=user.tgid))
else:
channel = await self.get_input_entity(source)
rights = ChannelBannedRights(datetime.fromtimestamp(0), True)
await source.client(EditBannedRequest(channel=channel,
user_id=user.tgid,
banned_rights=rights))
elif self.peer_type == "chat":
await user.client(DeleteChatUserRequest(chat_id=self.tgid, user_id=InputUserSelf()))
elif self.peer_type == "channel":
channel = await self.get_input_entity(user)
await user.client(LeaveChannelRequest(channel=channel))
async def join_matrix(self, user, event_id):
if await user.needs_relaybot(self):
async with self.require_send_lock(self.bot.tgid):
message = await self._get_state_change_message("join", user)
if not message:
return
response = await self.bot.client.send_message(
self.peer, message,
parse_mode=self._matrix_event_to_entities)
space = self.tgid if self.peer_type == "channel" else self.bot.tgid
self.is_duplicate(response, (event_id, space))
return
if self.peer_type == "channel" and not user.is_bot:
await user.client(JoinChannelRequest(channel=await self.get_input_entity(user)))
else:
# We'll just assume the user is already in the chat.
pass
async def _apply_msg_format(self, sender, msgtype, message):
if "formatted_body" not in message:
message["format"] = "org.matrix.custom.html"
message["formatted_body"] = escape_html(message.get("body", ""))
body = message["formatted_body"]
tpl = config["bridge.message_formats"].get(msgtype,
"$sender_displayname: $message")
displayname = await self.get_displayname(sender)
tpl_args = dict(sender_mxid=sender.mxid,
sender_username=sender.mxid_localpart,
sender_displayname=displayname,
message=body)
message["formatted_body"] = Template(tpl).safe_substitute(tpl_args)
async def _preprocess_matrix_message(self, sender, use_relaybot, message):
msgtype = message.get("msgtype", "m.text")
if msgtype == "m.emote":
await self._apply_msg_format(sender, msgtype, message)
message["msgtype"] = "m.text"
elif use_relaybot:
await self._apply_msg_format(sender, msgtype, message)
def _matrix_event_to_entities(self, event):
try:
if event.get("format", None) == "org.matrix.custom.html":
message, entities = formatter.matrix_to_telegram(event["formatted_body"])
else:
message, entities = formatter.matrix_text_to_telegram(event["body"])
except KeyError:
message, entities = None, None
return message, entities
def require_send_lock(self, id):
if id is None:
return None
try:
return self._send_locks[id]
except KeyError:
self._send_locks[id] = asyncio.Lock()
return self._send_locks[id]
def optional_send_lock(self, id):
if id is None:
return None
try:
return self._send_locks[id]
except KeyError:
return None
async def _handle_matrix_text(self, sender_id, event_id, space, client, message, reply_to):
lock = self.require_send_lock(sender_id)
async with lock:
response = await client.send_message(self.peer, message, reply_to=reply_to,
parse_mode=self._matrix_event_to_entities)
self._add_telegram_message_to_db(event_id, space, response)
async def _handle_matrix_file(self, type, sender_id, event_id, space, client, message,
reply_to):
file = await self.main_intent.download_file(message["url"])
info = message.get("info", {})
mime = info.get("mimetype", None)
w, h = None, None
if type == "m.sticker":
if mime != "image/gif":
mime, file, w, h = util.convert_image(file, source_mime=mime, target_type="webp")
else:
# Remove sticker description
message["mxtg_filename"] = "sticker.gif"
message["body"] = ""
elif "w" in info and "h" in info:
w, h = info["w"], info["h"]
file_name = self._get_file_meta(message["mxtg_filename"], mime)
attributes = [DocumentAttributeFilename(file_name=file_name)]
if w and h:
attributes.append(DocumentAttributeImageSize(w, h))
caption = message["body"] if message["body"] != file_name else None
media = await client.upload_file(file, mime, attributes, file_name)
lock = self.require_send_lock(sender_id)
async with lock:
response = await client.send_media(self.peer, media, reply_to=reply_to,
caption=caption)
self._add_telegram_message_to_db(event_id, space, response)
async def _handle_matrix_location(self, sender_id, event_id, space, client, message, reply_to):
try:
lat, long = message["geo_uri"][len("geo:"):].split(",")
lat, long = float(lat), float(long)
except (KeyError, ValueError):
self.log.exception("Failed to parse location")
return None
message, entities = self._matrix_event_to_entities(message)
media = MessageMediaGeo(geo=GeoPoint(lat, long))
lock = self.require_send_lock(sender_id)
async with lock:
response = await client.send_media(self.peer, media, reply_to=reply_to,
caption=message, entities=entities)
self._add_telegram_message_to_db(event_id, space, response)
def _add_telegram_message_to_db(self, event_id, space, response):
self.log.debug("Handled Matrix message: %s", response)
self.is_duplicate(response, (event_id, space))
self.db.add(DBMessage(
tgid=response.id,
tg_space=space,
mx_room=self.mxid,
mxid=event_id))
self.db.commit()
async def handle_matrix_message(self, sender: u.User, message: dict, event_id: str):
puppet = p.Puppet.get_by_custom_mxid(sender.mxid)
if puppet and message.get("net.maunium.telegram.puppet", False):
self.log.debug("Ignoring puppet-sent message by confirmed puppet user %s", sender.mxid)
return
logged_in = not await sender.needs_relaybot(self)
client = sender.client if logged_in else self.bot.client
sender_id = sender.tgid if logged_in else self.bot.tgid
space = (self.tgid if self.peer_type == "channel" # Channels have their own ID space
else (sender.tgid if logged_in else self.bot.tgid))
reply_to = formatter.matrix_reply_to_telegram(message, space, room_id=self.mxid)
message["mxtg_filename"] = message["body"]
await self._preprocess_matrix_message(sender, not logged_in, message)
type = message["msgtype"]
if type == "m.text" or (self.bridge_notices and type == "m.notice"):
await self._handle_matrix_text(sender_id, event_id, space, client, message, reply_to)
elif type == "m.location":
await self._handle_matrix_location(sender_id, event_id, space, client, message,
reply_to)
elif type in ("m.sticker", "m.image", "m.file", "m.audio", "m.video"):
await self._handle_matrix_file(type, sender_id, event_id, space, client, message,
reply_to)
else:
self.log.debug(f"Unhandled Matrix event: {message}")
async def handle_matrix_pin(self, sender, pinned_message):
if self.peer_type != "channel":
return
try:
if not pinned_message:
await sender.client(UpdatePinnedMessageRequest(channel=self.peer, id=0))
else:
message = DBMessage.query.filter(DBMessage.mxid == pinned_message,
DBMessage.tg_space == self.tgid,
DBMessage.mx_room == self.mxid).one_or_none()
await sender.client(UpdatePinnedMessageRequest(channel=self.peer, id=message.tgid))
except ChatNotModifiedError:
pass
async def handle_matrix_deletion(self, deleter, event_id):
deleter = deleter if not await deleter.needs_relaybot(self) else self.bot
space = self.tgid if self.peer_type == "channel" else deleter.tgid
message = DBMessage.query.filter(DBMessage.mxid == event_id,
DBMessage.tg_space == space,
DBMessage.mx_room == self.mxid).one_or_none()
if not message:
return
await deleter.client.delete_messages(self.peer, [message.tgid])
async def _update_telegram_power_level(self, sender, user_id, level):
if self.peer_type == "chat":
await sender.client(EditChatAdminRequest(
chat_id=self.tgid, user_id=user_id, is_admin=level >= 50))
elif self.peer_type == "channel":
moderator = level >= 50
admin = level >= 75
rights = ChannelAdminRights(change_info=moderator, post_messages=moderator,
edit_messages=moderator, delete_messages=moderator,
ban_users=moderator, invite_users=moderator,
invite_link=moderator, pin_messages=moderator,
add_admins=admin)
await sender.client(
EditAdminRequest(channel=await self.get_input_entity(sender),
user_id=user_id, admin_rights=rights))
async def handle_matrix_power_levels(self, sender, new_users, old_users):
# TODO handle all power level changes and bridge exact admin rights to supergroups/channels
for user, level in new_users.items():
if not user or user == self.main_intent.mxid or user == sender.mxid:
continue
user_id = p.Puppet.get_id_from_mxid(user)
if not user_id:
mx_user = u.User.get_by_mxid(user, create=False)
if not mx_user or not mx_user.tgid:
continue
user_id = mx_user.tgid
if not user_id or user_id == sender.tgid:
continue
if user not in old_users or level != old_users[user]:
await self._update_telegram_power_level(sender, user_id, level)
async def handle_matrix_about(self, sender, about):
if self.peer_type not in {"channel"}:
return
channel = await self.get_input_entity(sender)
await sender.client(EditAboutRequest(channel=channel, about=about))
self.about = about
self.save()
async def handle_matrix_title(self, sender, title):
if self.peer_type not in {"chat", "channel"}:
return
if self.peer_type == "chat":
response = await sender.client(EditChatTitleRequest(chat_id=self.tgid, title=title))
else:
channel = await self.get_input_entity(sender)
response = await sender.client(EditTitleRequest(channel=channel, title=title))
self._register_outgoing_actions_for_dedup(response)
self.title = title
self.save()
async def handle_matrix_avatar(self, sender, url):
if self.peer_type not in {"chat", "channel"}:
# Invalid peer type
return
file = await self.main_intent.download_file(url)
mime = magic.from_buffer(file, mime=True)
ext = mimetypes.guess_extension(mime)
uploaded = await sender.client.upload_file(file, file_name=f"avatar{ext}")
photo = InputChatUploadedPhoto(file=uploaded)
if self.peer_type == "chat":
response = await sender.client(EditChatPhotoRequest(chat_id=self.tgid, photo=photo))
else:
channel = await self.get_input_entity(sender)
response = await sender.client(EditPhotoRequest(channel=channel, photo=photo))
self._register_outgoing_actions_for_dedup(response)
for update in response.updates:
is_photo_update = (isinstance(update, UpdateNewMessage)
and isinstance(update.message, MessageService)
and isinstance(update.message.action, MessageActionChatEditPhoto))
if is_photo_update:
loc = self._get_largest_photo_size(update.message.action.photo).location
self.photo_id = f"{loc.volume_id}-{loc.local_id}"
self.save()
break
def _register_outgoing_actions_for_dedup(self, response):
for update in response.updates:
check_dedup = (isinstance(update, (UpdateNewMessage, UpdateNewChannelMessage))
and isinstance(update.message, MessageService))
if check_dedup:
self.is_duplicate_action(update.message)
# endregion
# region Telegram chat info updating
async def _get_telegram_users_in_matrix_room(self):
user_tgids = set()
user_mxids = await self.main_intent.get_room_members(self.mxid, ("join", "invite"))
for user in user_mxids:
if user == self.az.bot_mxid:
continue
mx_user = u.User.get_by_mxid(user, create=False)
if mx_user and mx_user.tgid:
user_tgids.add(mx_user.tgid)
puppet_id = p.Puppet.get_id_from_mxid(user)
if puppet_id:
user_tgids.add(puppet_id)
return list(user_tgids)
async def upgrade_telegram_chat(self, source):
if self.peer_type != "chat":
raise ValueError("Only normal group chats are upgradable to supergroups.")
updates = await source.client(MigrateChatRequest(chat_id=self.tgid))
entity = None
for chat in updates.chats:
if isinstance(chat, Channel):
entity = chat
break
if not entity:
raise ValueError("Upgrade may have failed: output channel not found.")
self.peer_type = "channel"
self.migrate_and_save(entity.id)
await self.update_info(source, entity)
async def set_telegram_username(self, source, username):
if self.peer_type != "channel":
raise ValueError("Only channels and supergroups have usernames.")
await source.client(
UpdateUsernameRequest(await self.get_input_entity(source), username))
if await self.update_username(username):
self.save()
async def create_telegram_chat(self, source, supergroup=False):
if not self.mxid:
raise ValueError("Can't create Telegram chat for portal without Matrix room.")
elif self.tgid:
raise ValueError("Can't create Telegram chat for portal with existing Telegram chat.")
invites = await self._get_telegram_users_in_matrix_room()
if len(invites) < 2:
raise ValueError("Not enough Telegram users to create a chat")
if self.peer_type == "chat":
updates = await source.client(CreateChatRequest(title=self.title, users=invites))
entity = updates.chats[0]
elif self.peer_type == "channel":
updates = await source.client(CreateChannelRequest(title=self.title,
about=self.about or "",
megagroup=supergroup))
entity = updates.chats[0]
await source.client(InviteToChannelRequest(
channel=await source.client.get_input_entity(entity),
users=invites))
else:
raise ValueError("Invalid peer type for Telegram chat creation")
self.tgid = entity.id
self.tg_receiver = self.tgid
self.by_tgid[self.tgid_full] = self
await self.update_info(source, entity)
self.db.add(self.db_instance)
self.save()
if self.bot and self.bot.tgid in invites:
self.bot.add_chat(self.tgid, self.peer_type)
levels = await self.main_intent.get_power_levels(self.mxid)
bot_level = self._get_bot_level(levels)
if bot_level == 100:
levels = self._get_base_power_levels(levels, entity)
await self.main_intent.set_power_levels(self.mxid, levels)
await self.handle_matrix_power_levels(source, levels["users"], {})
async def invite_telegram(self, source, puppet):
if self.peer_type == "chat":
await source.client(
AddChatUserRequest(chat_id=self.tgid, user_id=puppet.tgid, fwd_limit=0))
elif self.peer_type == "channel":
await source.client(InviteToChannelRequest(channel=self.peer, users=[puppet.tgid]))
else:
raise ValueError("Invalid peer type for Telegram user invite")
# endregion
# region Telegram event handling
async def handle_telegram_typing(self, user, event):
if self.mxid:
await user.intent.set_typing(self.mxid, is_typing=True)
def get_external_url(self, evt: Message):
if self.peer_type == "channel" and self.username is not None:
return f"https://t.me/{self.username}/{evt.id}"
return None
async def handle_telegram_photo(self, source: u.User, intent, evt: Message, relates_to=None):
largest_size = self._get_largest_photo_size(evt.media.photo)
file = await util.transfer_file_to_matrix(self.db, source.client, intent,
largest_size.location)
if not file:
return None
if config["bridge.inline_images"] and (evt.message or evt.fwd_from or evt.reply_to_msg_id):
text, html, relates_to = await formatter.telegram_to_matrix(
evt, source, self.main_intent,
prefix_html=f"
",
prefix_text="Inline image: ")
await intent.set_typing(self.mxid, is_typing=False)
return await intent.send_text(self.mxid, text, html=html, relates_to=relates_to,
timestamp=evt.date,
external_url=self.get_external_url(evt))
info = {
"h": largest_size.h,
"w": largest_size.w,
"size": len(largest_size.bytes) if (
isinstance(largest_size, PhotoCachedSize)) else largest_size.size,
"orientation": 0,
"mimetype": file.mime_type,
}
name = evt.message
await intent.set_typing(self.mxid, is_typing=False)
return await intent.send_image(self.mxid, file.mxc, info=info, text=name,
relates_to=relates_to, timestamp=evt.date,
external_url=self.get_external_url(evt))
@staticmethod
def _parse_telegram_document_attributes(attributes):
attrs = {
"name": None,
"mime_type": None,
"is_sticker": False,
"sticker_alt": None,
"width": None,
"height": None,
}
for attr in attributes:
if isinstance(attr, DocumentAttributeFilename):
attrs["name"] = attrs["name"] or attr.file_name
attrs["mime_type"], _ = mimetypes.guess_type(attr.file_name)
elif isinstance(attr, DocumentAttributeSticker):
attrs["is_sticker"] = True
attrs["sticker_alt"] = attr.alt
elif isinstance(attr, DocumentAttributeVideo):
attrs["width"], attrs["height"] = attr.w, attr.h
return attrs
@staticmethod
def _parse_telegram_document_meta(evt, file, attrs):
document = evt.media.document
name = evt.message or attrs["name"]
if attrs["is_sticker"]:
alt = attrs["sticker_alt"]
if len(alt) > 0:
name = f"{alt} ({unicodedata.name(alt[0]).lower()})"
mime_type = document.mime_type or file.mime_type
info = {
"size": file.size,
"mimetype": mime_type,
}
if attrs["mime_type"] and not file.was_converted:
file.mime_type = attrs["mime_type"] or file.mime_type
if file.width and file.height:
info["w"], info["h"] = file.width, file.height
elif attrs["width"] and attrs["height"]:
info["w"], info["h"] = attrs["width"], attrs["height"]
if file.thumbnail:
info["thumbnail_url"] = file.thumbnail.mxc
info["thumbnail_info"] = {
"mimetype": file.thumbnail.mime_type,
"h": file.thumbnail.height or document.thumb.h,
"w": file.thumbnail.width or document.thumb.w,
"size": file.thumbnail.size,
}
return info, name
async def handle_telegram_document(self, source, intent, evt: Message, relates_to=None):
document = evt.media.document
attrs = self._parse_telegram_document_attributes(document.attributes)
file = await util.transfer_file_to_matrix(self.db, source.client, intent, document,
document.thumb, is_sticker=attrs["is_sticker"])
if not file:
return None
info, name = self._parse_telegram_document_meta(evt, file, attrs)
await intent.set_typing(self.mxid, is_typing=False)
kwargs = {
"room_id": self.mxid,
"url": file.mxc,
"info": info,
"text": name,
"relates_to": relates_to,
"timestamp": evt.date,
"external_url": self.get_external_url(evt)
}
if attrs["is_sticker"] and config["bridge.native_stickers"]:
return await intent.send_sticker(**kwargs)
mime_type = info["mimetype"]
if mime_type.startswith("video/"):
kwargs["file_type"] = "m.video"
elif mime_type.startswith("audio/"):
kwargs["file_type"] = "m.audio"
elif mime_type.startswith("image/"):
kwargs["file_type"] = "m.image"
else:
kwargs["file_type"] = "m.file"
return await intent.send_file(**kwargs)
def handle_telegram_location(self, source, intent, evt, relates_to=None):
location = evt.media.geo
long = location.long
lat = location.lat
long_char = "E" if long > 0 else "W"
lat_char = "N" if lat > 0 else "S"
rounded_long = abs(round(long * 100000) / 100000)
rounded_lat = abs(round(lat * 100000) / 100000)
body = f"{rounded_lat}° {lat_char}, {rounded_long}° {long_char}"
url = f"https://maps.google.com/?q={lat},{long}"
formatted_body = f"Location: {body}"
# At least riot-web ignores formatting in m.location messages,
# so we'll add a plaintext link.
body = f"Location: {body}\n{url}"
return intent.send_message(self.mxid, {
"msgtype": "m.location",
"geo_uri": f"geo:{lat},{long}",
"body": body,
"format": "org.matrix.custom.html",
"formatted_body": formatted_body,
"m.relates_to": relates_to or None,
}, timestamp=evt.date, external_url=self.get_external_url(evt))
async def handle_telegram_text(self, source, intent, is_bot, evt):
self.log.debug(f"Sending {evt.message} to {self.mxid} by {intent.mxid}")
text, html, relates_to = await formatter.telegram_to_matrix(evt, source, self.main_intent)
await intent.set_typing(self.mxid, is_typing=False)
msgtype = "m.notice" if is_bot and config["bridge.bot_messages_as_notices"] else "m.text"
return await intent.send_text(self.mxid, text, html=html, relates_to=relates_to,
msgtype=msgtype, timestamp=evt.date,
external_url=self.get_external_url(evt))
async def handle_telegram_edit(self, source, sender, evt):
if not self.mxid:
return
elif not config["bridge.edits_as_replies"]:
self.log.debug("Edits as replies disabled, ignoring edit event...")
return
lock = self.optional_send_lock(sender.tgid if sender else None)
if lock:
async with lock:
pass
tg_space = self.tgid if self.peer_type == "channel" else source.tgid
temporary_identifier = f"${random.randint(1000000000000,9999999999999)}TGBRIDGEDITEMP"
duplicate_found = self.is_duplicate(evt, (temporary_identifier, tg_space), force_hash=True)
if duplicate_found:
mxid, other_tg_space = duplicate_found
if tg_space != other_tg_space:
msg = DBMessage.query.get((evt.id, tg_space))
msg.mxid = mxid
msg.mx_room = self.mxid
self.db.commit()
return
evt.reply_to_msg_id = evt.id
text, html, relates_to = await formatter.telegram_to_matrix(evt, source, self.main_intent,
is_edit=True)
intent = sender.intent if sender else self.main_intent
await intent.set_typing(self.mxid, is_typing=False)
response = await intent.send_text(self.mxid, text, html=html, relates_to=relates_to,
external_url=self.get_external_url(evt))
mxid = response["event_id"]
msg = DBMessage.query.get((evt.id, tg_space))
if not msg:
# Oh crap
return
msg.mxid = mxid
msg.mx_room = self.mxid
DBMessage.query \
.filter(DBMessage.mx_room == self.mxid,
DBMessage.mxid == temporary_identifier) \
.update({"mxid": mxid})
self.db.commit()
async def handle_telegram_message(self, source, sender, evt):
if not self.mxid:
await self.create_matrix_room(source, invites=[source.mxid], update_if_exists=False)
lock = self.optional_send_lock(sender.tgid if sender else None)
if lock:
async with lock:
pass
tg_space = self.tgid if self.peer_type == "channel" else source.tgid
temporary_identifier = f"${random.randint(1000000000000,9999999999999)}TGBRIDGETEMP"
duplicate_found = self.is_duplicate(evt, (temporary_identifier, tg_space))
if duplicate_found:
mxid, other_tg_space = duplicate_found
self.log.debug(f"Ignoring message {evt.id}@{tg_space} (src {source.tgid}) "
f"as it was already handled (in space {other_tg_space})")
if tg_space != other_tg_space:
self.db.add(
DBMessage(tgid=evt.id, mx_room=self.mxid, mxid=mxid, tg_space=tg_space))
self.db.commit()
return
if sender and not sender.displayname:
self.log.debug(f"Telegram user {sender.tgid} sent a message, but doesn't have a"
"displayname, updating info...")
entity = await source.client.get_entity(PeerUser(sender.tgid))
await sender.update_info(source, entity)
allowed_media = (MessageMediaPhoto, MessageMediaDocument, MessageMediaGeo)
media = evt.media if hasattr(evt, "media") and isinstance(evt.media,
allowed_media) else None
intent = sender.intent if sender else self.main_intent
if not media and evt.message:
is_bot = sender.is_bot if sender else False
response = await self.handle_telegram_text(source, intent, is_bot, evt)
elif media:
relates_to = formatter.telegram_reply_to_matrix(evt, source)
if isinstance(media, MessageMediaPhoto):
response = await self.handle_telegram_photo(source, intent, evt, relates_to)
elif isinstance(media, MessageMediaDocument):
response = await self.handle_telegram_document(source, intent, evt, relates_to)
elif isinstance(media, MessageMediaGeo):
response = await self.handle_telegram_location(source, intent, evt, relates_to)
else:
self.log.debug("Unhandled Telegram media: %s", media)
return
else:
self.log.debug("Unhandled Telegram message: %s", evt)
return
if not response:
return
mxid = response["event_id"]
prev_id = self.update_duplicate(evt, (mxid, tg_space), (temporary_identifier, tg_space))
if prev_id:
self.log.debug(f"Sent message {evt.id}@{tg_space} to Matrix as {mxid}. "
f"Temporary dedup identifier was {temporary_identifier}, "
f"but dedup map contained {prev_id[1]} instead! -- "
"This was probably a race condition caused by Telegram sending updates"
"to other clients before responding to the sender. I'll just redact "
"the likely duplicate message now.")
await intent.redact(self.mxid, mxid)
return
self.log.debug("Handled Telegram message: %s", evt)
try:
self.db.add(DBMessage(tgid=evt.id, mx_room=self.mxid, mxid=mxid, tg_space=tg_space))
self.db.commit()
DBMessage.query \
.filter(DBMessage.mx_room == self.mxid,
DBMessage.mxid == temporary_identifier) \
.update({"mxid": mxid})
except FlushError as e:
self.log.exception(f"{e.__class__.__name__} while saving message mapping.")
await intent.redact(self.mxid, mxid)
except (IntegrityError, InvalidRequestError) as e:
self.log.exception(f"{e.__class__.__name__} while saving message mapping.")
self.db.rollback()
await intent.redact(self.mxid, mxid)
async def _create_room_on_action(self, source, action):
if source.is_relaybot:
return False
create_and_exit = (MessageActionChatCreate, MessageActionChannelCreate)
create_and_continue = (MessageActionChatAddUser, MessageActionChatJoinedByLink)
if isinstance(action, create_and_exit + create_and_continue):
await self.create_matrix_room(source, invites=[source.mxid],
update_if_exists=isinstance(action, create_and_exit))
if not isinstance(action, create_and_continue):
return False
return True
async def handle_telegram_action(self, source, sender, update):
action = update.action
should_ignore = ((not self.mxid and not await self._create_room_on_action(source, action))
or self.is_duplicate_action(update))
if should_ignore or not self.mxid:
return
# TODO figure out how to see changes to about text / channel username
if isinstance(action, MessageActionChatEditTitle):
await self.update_title(action.title, save=True)
elif isinstance(action, MessageActionChatEditPhoto):
largest_size = self._get_largest_photo_size(action.photo)
await self.update_avatar(source, largest_size.location, save=True)
elif isinstance(action, MessageActionChatDeletePhoto):
await self.remove_avatar(source, save=True)
elif isinstance(action, MessageActionChatAddUser):
for user_id in action.users:
await self.add_telegram_user(user_id, source)
elif isinstance(action, MessageActionChatJoinedByLink):
await self.add_telegram_user(sender.id, source)
elif isinstance(action, MessageActionChatDeleteUser):
await self.delete_telegram_user(action.user_id, sender)
elif isinstance(action, MessageActionChatMigrateTo):
self.peer_type = "channel"
self.migrate_and_save(action.channel_id)
await sender.intent.send_emote(self.mxid, "upgraded this group to a supergroup.")
elif isinstance(action, MessageActionPinMessage):
await self.receive_telegram_pin_sender(sender)
else:
self.log.debug("Unhandled Telegram action in %s: %s", self.title, action)
async def set_telegram_admin(self, user_id):
puppet = p.Puppet.get(user_id)
user = await u.User.get_by_tgid(user_id)
levels = await self.main_intent.get_power_levels(self.mxid)
if user:
levels["users"][user.mxid] = 50
if puppet:
levels["users"][puppet.mxid] = 50
await self.main_intent.set_power_levels(self.mxid, levels)
async def receive_telegram_pin_sender(self, sender):
self._temp_pinned_message_sender = sender
if self._temp_pinned_message_id:
await self.update_telegram_pin()
async def update_telegram_pin(self):
intent = (self._temp_pinned_message_sender.intent
if self._temp_pinned_message_sender else self.main_intent)
id = self._temp_pinned_message_id
self._temp_pinned_message_id = None
self._temp_pinned_message_sender = None
message = DBMessage.query.get((id, self.tgid))
if message:
await intent.set_pinned_messages(self.mxid, [message.mxid])
else:
await intent.set_pinned_messages(self.mxid, [])
async def receive_telegram_pin_id(self, id):
if id == 0:
return await self.update_telegram_pin()
self._temp_pinned_message_id = id
if self._temp_pinned_message_sender:
await self.update_telegram_pin()
@staticmethod
def _get_level_from_participant(participant, _):
# TODO use the power level requirements to get better precision in channels
if isinstance(participant, (ChatParticipantAdmin, ChannelParticipantAdmin)):
return 50
elif isinstance(participant, (ChatParticipantCreator, ChannelParticipantCreator)):
return 95
return 0
@staticmethod
def _participant_to_power_levels(levels, user, new_level, bot_level):
new_level = min(new_level, bot_level)
default_level = levels["users_default"] if "users_default" in levels else 0
try:
user_level = int(levels["users"][user.mxid])
except (ValueError, KeyError):
user_level = default_level
if user_level != new_level and user_level < bot_level:
levels["users"][user.mxid] = new_level
return True
return False
def _get_bot_level(self, levels):
try:
return levels["users"][self.main_intent.mxid]
except KeyError:
try:
return levels["users_default"]
except KeyError:
return 0
@staticmethod
def _get_powerlevel_level(levels):
try:
return levels["events"]["m.room.power_levels"]
except KeyError:
try:
return levels["state_default"]
except KeyError:
return 50
def _participants_to_power_levels(self, participants, levels):
bot_level = self._get_bot_level(levels)
if bot_level < self._get_powerlevel_level(levels):
return False
changed = False
admin_power_level = min(75 if self.peer_type == "channel" else 50, bot_level)
if levels["events"]["m.room.power_levels"] != admin_power_level:
changed = True
levels["events"]["m.room.power_levels"] = admin_power_level
for participant in participants:
puppet = p.Puppet.get(participant.user_id)
user = u.User.get_by_tgid(participant.user_id)
new_level = self._get_level_from_participant(participant, levels)
if user:
user.register_portal(self)
changed = self._participant_to_power_levels(levels, user, new_level,
bot_level) or changed
if puppet:
changed = self._participant_to_power_levels(levels, puppet, new_level,
bot_level) or changed
return changed
async def update_telegram_participants(self, participants, levels=None):
if not levels:
levels = await self.main_intent.get_power_levels(self.mxid)
if self._participants_to_power_levels(participants, levels):
await self.main_intent.set_power_levels(self.mxid, levels)
async def set_telegram_admins_enabled(self, enabled):
level = 50 if enabled else 10
levels = await self.main_intent.get_power_levels(self.mxid)
levels["invite"] = level
levels["events"]["m.room.name"] = level
levels["events"]["m.room.avatar"] = level
await self.main_intent.set_power_levels(self.mxid, levels)
# endregion
# region Database conversion
@property
def db_instance(self):
if not self._db_instance:
self._db_instance = self.new_db_instance()
return self._db_instance
def new_db_instance(self):
return DBPortal(tgid=self.tgid, tg_receiver=self.tg_receiver, peer_type=self.peer_type,
mxid=self.mxid, username=self.username, megagroup=self.megagroup,
title=self.title, about=self.about, photo_id=self.photo_id)
def migrate_and_save(self, new_id):
existing = DBPortal.query.get(self.tgid_full)
if existing:
self.db.delete(existing)
try:
del self.by_tgid[self.tgid_full]
except KeyError:
pass
self.tgid = new_id
self.tg_receiver = new_id
self.by_tgid[self.tgid_full] = self
self.save()
def save(self):
self.db_instance.mxid = self.mxid
self.db_instance.username = self.username
self.db_instance.title = self.title
self.db_instance.about = self.about
self.db_instance.photo_id = self.photo_id
self.db.commit()
def delete(self):
try:
del self.by_tgid[self.tgid_full]
except KeyError:
pass
try:
del self.by_mxid[self.mxid]
except KeyError:
pass
if self._db_instance:
self.db.delete(self._db_instance)
self.db.commit()
@classmethod
def from_db(cls, db_portal):
return Portal(tgid=db_portal.tgid, tg_receiver=db_portal.tg_receiver,
peer_type=db_portal.peer_type, mxid=db_portal.mxid,
username=db_portal.username, megagroup=db_portal.megagroup,
title=db_portal.title, about=db_portal.about, photo_id=db_portal.photo_id,
db_instance=db_portal)
# endregion
# region Class instance lookup
@classmethod
def get_by_mxid(cls, mxid):
try:
return cls.by_mxid[mxid]
except KeyError:
pass
portal = DBPortal.query.filter(DBPortal.mxid == mxid).one_or_none()
if portal:
return cls.from_db(portal)
return None
@classmethod
def get_username_from_mx_alias(cls, alias):
match = cls.mx_alias_regex.match(alias)
if match:
return match.group(1)
return None
@classmethod
def find_by_username(cls, username):
if not username:
return None
for _, portal in cls.by_tgid.items():
if portal.username and portal.username.lower() == username.lower():
return portal
portal = DBPortal.query.filter(DBPortal.username == username).one_or_none()
if portal:
return cls.from_db(portal)
return None
@classmethod
def get_by_tgid(cls, tgid, tg_receiver=None, peer_type=None):
tg_receiver = tg_receiver or tgid
tgid_full = (tgid, tg_receiver)
try:
return cls.by_tgid[tgid_full]
except KeyError:
pass
portal = DBPortal.query.get(tgid_full)
if portal:
return cls.from_db(portal)
if peer_type:
portal = Portal(tgid, peer_type=peer_type, tg_receiver=tg_receiver)
cls.db.add(portal.db_instance)
cls.db.commit()
return portal
return None
@classmethod
def get_by_entity(cls, entity, receiver_id=None, create=True):
entity_type = type(entity)
if entity_type in {Chat, ChatFull}:
type_name = "chat"
id = entity.id
elif entity_type in {PeerChat, InputPeerChat}:
type_name = "chat"
id = entity.chat_id
elif entity_type in {Channel, ChannelFull}:
type_name = "channel"
id = entity.id
elif entity_type in {PeerChannel, InputPeerChannel, InputChannel}:
type_name = "channel"
id = entity.channel_id
elif entity_type in {User, UserFull}:
type_name = "user"
id = entity.id
elif entity_type in {PeerUser, InputPeerUser, InputUser}:
type_name = "user"
id = entity.user_id
else:
raise ValueError(f"Unknown entity type {entity_type.__name__}")
return cls.get_by_tgid(id,
receiver_id if type_name == "user" else id,
type_name if create else None)
# endregion
def init(context):
global config
Portal.az, Portal.db, config, Portal.loop, Portal.bot = context
Portal.bridge_notices = config["bridge.bridge_notices"]
Portal.filter_mode = config["bridge.filter.mode"]
Portal.filter_list = config["bridge.filter.list"]
Portal.alias_template = config.get("bridge.alias_template", "telegram_{groupname}")
Portal.hs_domain = config["homeserver.domain"]
localpart = Portal.alias_template.format(groupname="(.+)")
Portal.mx_alias_regex = re.compile(f"#{localpart}:{Portal.hs_domain}")