# Pyrogram - Telegram MTProto API Client Library for Python # Copyright (C) 2017-2021 Dan # # This file is part of Pyrogram. # # Pyrogram is free software: you can redistribute it and/or modify # it under the terms of the GNU Lesser General Public License as published # by the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # Pyrogram 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 Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public License # along with Pyrogram. If not, see . import asyncio import functools import inspect import logging import os import re import shutil import tempfile from concurrent.futures.thread import ThreadPoolExecutor from configparser import ConfigParser from hashlib import sha256 from importlib import import_module from pathlib import Path from typing import Union, List, Optional import pyrogram from pyrogram import raw from pyrogram import utils from pyrogram.crypto import aes from pyrogram.errors import ( SessionPasswordNeeded, VolumeLocNotFound, ChannelPrivate, AuthBytesInvalid, BadRequest ) from pyrogram.handlers.handler import Handler from pyrogram.methods import Methods from pyrogram.session import Auth, Session from pyrogram.storage import Storage, FileStorage, MemoryStorage from pyrogram.types import User, TermsOfService from pyrogram.utils import ainput from .dispatcher import Dispatcher from .file_id import FileId, FileType, ThumbnailSource from .scaffold import Scaffold log = logging.getLogger(__name__) class Client(Methods, Scaffold): """Pyrogram Client, the main means for interacting with Telegram. Parameters: session_name (``str``): Pass a string of your choice to give a name to the client session, e.g.: "*my_account*". This name will be used to save a file on disk that stores details needed to reconnect without asking again for credentials. Alternatively, if you don't want a file to be saved on disk, pass the special name ``":memory:"`` to start an in-memory session that will be discarded as soon as you stop the Client. In order to reconnect again using a memory storage without having to login again, you can use :meth:`~pyrogram.Client.export_session_string` before stopping the client to get a session string you can pass here as argument. api_id (``int`` | ``str``, *optional*): The *api_id* part of your Telegram API Key, as integer. E.g.: "12345". This is an alternative way to pass it if you don't want to use the *config.ini* file. api_hash (``str``, *optional*): The *api_hash* part of your Telegram API Key, as string. E.g.: "0123456789abcdef0123456789abcdef". This is an alternative way to set it if you don't want to use the *config.ini* file. app_version (``str``, *optional*): Application version. Defaults to "Pyrogram |version|". This is an alternative way to set it if you don't want to use the *config.ini* file. device_model (``str``, *optional*): Device model. Defaults to *platform.python_implementation() + " " + platform.python_version()*. This is an alternative way to set it if you don't want to use the *config.ini* file. system_version (``str``, *optional*): Operating System version. Defaults to *platform.system() + " " + platform.release()*. This is an alternative way to set it if you don't want to use the *config.ini* file. lang_code (``str``, *optional*): Code of the language used on the client, in ISO 639-1 standard. Defaults to "en". This is an alternative way to set it if you don't want to use the *config.ini* file. ipv6 (``bool``, *optional*): Pass True to connect to Telegram using IPv6. Defaults to False (IPv4). proxy (``dict``, *optional*): Your SOCKS5 Proxy settings as dict, e.g.: *dict(hostname="11.22.33.44", port=1080, username="user", password="pass")*. The *username* and *password* can be omitted if your proxy doesn't require authorization. This is an alternative way to setup a proxy if you don't want to use the *config.ini* file. test_mode (``bool``, *optional*): Enable or disable login to the test servers. Only applicable for new sessions and will be ignored in case previously created sessions are loaded. Defaults to False. bot_token (``str``, *optional*): Pass your Bot API token to create a bot session, e.g.: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11" Only applicable for new sessions. This is an alternative way to set it if you don't want to use the *config.ini* file. phone_number (``str``, *optional*): Pass your phone number as string (with your Country Code prefix included) to avoid entering it manually. Only applicable for new sessions. phone_code (``str``, *optional*): Pass the phone code as string (for test numbers only) to avoid entering it manually. Only applicable for new sessions. password (``str``, *optional*): Pass your Two-Step Verification password as string (if you have one) to avoid entering it manually. Only applicable for new sessions. force_sms (``bool``, *optional*): Pass True to force Telegram sending the authorization code via SMS. Only applicable for new sessions. Defaults to False. workers (``int``, *optional*): Number of maximum concurrent workers for handling incoming updates. Defaults to ``min(32, os.cpu_count() + 4)``. workdir (``str``, *optional*): Define a custom working directory. The working directory is the location in your filesystem where Pyrogram will store your session files. Defaults to the parent directory of the main script. config_file (``str``, *optional*): Path of the configuration file. Defaults to ./config.ini plugins (``dict``, *optional*): Your Smart Plugins settings as dict, e.g.: *dict(root="plugins")*. This is an alternative way to setup plugins if you don't want to use the *config.ini* file. parse_mode (``str``, *optional*): The parse mode, can be any of: *"combined"*, for the default combined mode. *"markdown"* or *"md"* to force Markdown-only styles. *"html"* to force HTML-only styles. *None* to disable the parser completely. no_updates (``bool``, *optional*): Pass True to completely disable incoming updates for the current session. When updates are disabled your client can't receive any new message. Useful for batch programs that don't need to deal with updates. Defaults to False (updates enabled and always received). takeout (``bool``, *optional*): Pass True to let the client use a takeout session instead of a normal one, implies *no_updates=True*. Useful for exporting your Telegram data. Methods invoked inside a takeout session (such as get_history, download_media, ...) are less prone to throw FloodWait exceptions. Only available for users, bots will ignore this parameter. Defaults to False (normal session). sleep_threshold (``int``, *optional*): Set a sleep threshold for flood wait exceptions happening globally in this client instance, below which any request that raises a flood wait will be automatically invoked again after sleeping for the required amount of time. Flood wait exceptions requiring higher waiting times will be raised. Defaults to 10 seconds. hide_password (``bool``, *optional*): Pass True to hide the password when typing it during the login. Defaults to False, because ``getpass`` (the library used) is known to be problematic in some terminal environments. """ def __init__( self, session_name: Union[str, Storage], api_id: Union[int, str] = None, api_hash: str = None, app_version: str = None, device_model: str = None, system_version: str = None, lang_code: str = None, ipv6: bool = False, proxy: dict = None, test_mode: bool = False, bot_token: str = None, phone_number: str = None, phone_code: str = None, password: str = None, force_sms: bool = False, workers: int = Scaffold.WORKERS, workdir: str = Scaffold.WORKDIR, config_file: str = Scaffold.CONFIG_FILE, plugins: dict = None, parse_mode: str = Scaffold.PARSE_MODES[0], no_updates: bool = None, takeout: bool = None, sleep_threshold: int = Session.SLEEP_THRESHOLD, hide_password: bool = False ): super().__init__() self.session_name = session_name self.api_id = int(api_id) if api_id else None self.api_hash = api_hash self.app_version = app_version self.device_model = device_model self.system_version = system_version self.lang_code = lang_code self.ipv6 = ipv6 # TODO: Make code consistent, use underscore for private/protected fields self._proxy = proxy self.test_mode = test_mode self.bot_token = bot_token self.phone_number = phone_number self.phone_code = phone_code self.password = password self.force_sms = force_sms self.workers = workers self.workdir = Path(workdir) self.config_file = Path(config_file) self.plugins = plugins self.parse_mode = parse_mode self.no_updates = no_updates self.takeout = takeout self.sleep_threshold = sleep_threshold self.hide_password = hide_password self.executor = ThreadPoolExecutor(self.workers, thread_name_prefix="Handler") if isinstance(session_name, str): if session_name == ":memory:" or len(session_name) >= MemoryStorage.SESSION_STRING_SIZE: session_name = re.sub(r"[\n\s]+", "", session_name) self.storage = MemoryStorage(session_name) else: self.storage = FileStorage(session_name, self.workdir) elif isinstance(session_name, Storage): self.storage = session_name else: raise ValueError("Unknown storage engine") self.dispatcher = Dispatcher(self) self.loop = asyncio.get_event_loop() def __enter__(self): return self.start() def __exit__(self, *args): try: self.stop() except ConnectionError: pass async def __aenter__(self): return await self.start() async def __aexit__(self, *args): await self.stop() @property def proxy(self): return self._proxy @proxy.setter def proxy(self, value): if value is None: self._proxy = None return if self._proxy is None: self._proxy = {} self._proxy["enabled"] = bool(value.get("enabled", True)) self._proxy.update(value) async def authorize(self) -> User: if self.bot_token: return await self.sign_in_bot(self.bot_token) while True: try: if not self.phone_number: while True: value = await ainput("Enter phone number or bot token: ") if not value: continue confirm = (await ainput(f'Is "{value}" correct? (y/N): ')).lower() if confirm == "y": break if ":" in value: self.bot_token = value return await self.sign_in_bot(value) else: self.phone_number = value sent_code = await self.send_code(self.phone_number) except BadRequest as e: print(e.MESSAGE) self.phone_number = None self.bot_token = None else: break if self.force_sms: sent_code = await self.resend_code(self.phone_number, sent_code.phone_code_hash) print("The confirmation code has been sent via {}".format( { "app": "Telegram app", "sms": "SMS", "call": "phone call", "flash_call": "phone flash call" }[sent_code.type] )) while True: if not self.phone_code: self.phone_code = await ainput("Enter confirmation code: ") try: signed_in = await self.sign_in(self.phone_number, sent_code.phone_code_hash, self.phone_code) except BadRequest as e: print(e.MESSAGE) self.phone_code = None except SessionPasswordNeeded as e: print(e.MESSAGE) while True: print("Password hint: {}".format(await self.get_password_hint())) if not self.password: self.password = await ainput("Enter password (empty to recover): ", hide=self.hide_password) try: if not self.password: confirm = await ainput("Confirm password recovery (y/n): ") if confirm == "y": email_pattern = await self.send_recovery_code() print(f"The recovery code has been sent to {email_pattern}") while True: recovery_code = await ainput("Enter recovery code: ") try: return await self.recover_password(recovery_code) except BadRequest as e: print(e.MESSAGE) except Exception as e: log.error(e, exc_info=True) raise else: self.password = None else: return await self.check_password(self.password) except BadRequest as e: print(e.MESSAGE) self.password = None else: break if isinstance(signed_in, User): return signed_in while True: first_name = await ainput("Enter first name: ") last_name = await ainput("Enter last name (empty to skip): ") try: signed_up = await self.sign_up( self.phone_number, sent_code.phone_code_hash, first_name, last_name ) except BadRequest as e: print(e.MESSAGE) else: break if isinstance(signed_in, TermsOfService): print("\n" + signed_in.text + "\n") await self.accept_terms_of_service(signed_in.id) return signed_up @property def parse_mode(self): return self._parse_mode @parse_mode.setter def parse_mode(self, parse_mode: Optional[str] = "combined"): if parse_mode not in self.PARSE_MODES: raise ValueError('parse_mode must be one of {} or None. Not "{}"'.format( ", ".join(f'"{m}"' for m in self.PARSE_MODES[:-1]), parse_mode )) self._parse_mode = parse_mode # TODO: redundant, remove in next major version def set_parse_mode(self, parse_mode: Optional[str] = "combined"): """Set the parse mode to be used globally by the client. When setting the parse mode with this method, all other methods having a *parse_mode* parameter will follow the global value by default. The default value *"combined"* enables both Markdown and HTML styles to be used and combined together. Parameters: parse_mode (``str``): The new parse mode, can be any of: *"combined"*, for the default combined mode. *"markdown"* or *"md"* to force Markdown-only styles. *"html"* to force HTML-only styles. *None* to disable the parser completely. Raises: ValueError: In case the provided *parse_mode* is not a valid parse mode. Example: .. code-block:: python :emphasize-lines: 10,14,18,22 from pyrogram import Client app = Client("my_account") with app: # Default combined mode: Markdown + HTML app.send_message("haskell", "1. **markdown** and html") # Force Markdown-only, HTML is disabled app.set_parse_mode("markdown") app.send_message("haskell", "2. **markdown** and html") # Force HTML-only, Markdown is disabled app.set_parse_mode("html") app.send_message("haskell", "3. **markdown** and html") # Disable the parser completely app.set_parse_mode(None) app.send_message("haskell", "4. **markdown** and html") # Bring back the default combined mode app.set_parse_mode() app.send_message("haskell", "5. **markdown** and html") """ self.parse_mode = parse_mode async def fetch_peers(self, peers: List[Union[raw.types.User, raw.types.Chat, raw.types.Channel]]) -> bool: is_min = False parsed_peers = [] for peer in peers: if getattr(peer, "min", False): is_min = True continue username = None phone_number = None if isinstance(peer, raw.types.User): peer_id = peer.id access_hash = peer.access_hash username = (peer.username or "").lower() or None phone_number = peer.phone peer_type = "bot" if peer.bot else "user" elif isinstance(peer, (raw.types.Chat, raw.types.ChatForbidden)): peer_id = -peer.id access_hash = 0 peer_type = "group" elif isinstance(peer, (raw.types.Channel, raw.types.ChannelForbidden)): peer_id = utils.get_channel_id(peer.id) access_hash = peer.access_hash username = (getattr(peer, "username", None) or "").lower() or None peer_type = "channel" if peer.broadcast else "supergroup" else: continue parsed_peers.append((peer_id, access_hash, peer_type, username, phone_number)) await self.storage.update_peers(parsed_peers) return is_min async def handle_download(self, packet): temp_file_path = "" final_file_path = "" try: file_id, directory, file_name, file_size, progress, progress_args = packet temp_file_path = await self.get_file( file_id=file_id, file_size=file_size, progress=progress, progress_args=progress_args ) if temp_file_path: final_file_path = os.path.abspath(re.sub("\\\\", "/", os.path.join(directory, file_name))) os.makedirs(directory, exist_ok=True) shutil.move(temp_file_path, final_file_path) except Exception as e: log.error(e, exc_info=True) try: os.remove(temp_file_path) except OSError: pass else: return final_file_path or None async def handle_updates(self, updates): if isinstance(updates, (raw.types.Updates, raw.types.UpdatesCombined)): is_min = (await self.fetch_peers(updates.users)) or (await self.fetch_peers(updates.chats)) users = {u.id: u for u in updates.users} chats = {c.id: c for c in updates.chats} for update in updates.updates: channel_id = getattr( getattr( getattr( update, "message", None ), "peer_id", None ), "channel_id", None ) or getattr(update, "channel_id", None) pts = getattr(update, "pts", None) pts_count = getattr(update, "pts_count", None) if isinstance(update, raw.types.UpdateChannelTooLong): log.warning(update) if isinstance(update, raw.types.UpdateNewChannelMessage) and is_min: message = update.message if not isinstance(message, raw.types.MessageEmpty): try: diff = await self.send( raw.functions.updates.GetChannelDifference( channel=await self.resolve_peer(utils.get_channel_id(channel_id)), filter=raw.types.ChannelMessagesFilter( ranges=[raw.types.MessageRange( min_id=update.message.id, max_id=update.message.id )] ), pts=pts - pts_count, limit=pts ) ) except ChannelPrivate: pass else: if not isinstance(diff, raw.types.updates.ChannelDifferenceEmpty): users.update({u.id: u for u in diff.users}) chats.update({c.id: c for c in diff.chats}) self.dispatcher.updates_queue.put_nowait((update, users, chats)) elif isinstance(updates, (raw.types.UpdateShortMessage, raw.types.UpdateShortChatMessage)): diff = await self.send( raw.functions.updates.GetDifference( pts=updates.pts - updates.pts_count, date=updates.date, qts=-1 ) ) if diff.new_messages: self.dispatcher.updates_queue.put_nowait(( raw.types.UpdateNewMessage( message=diff.new_messages[0], pts=updates.pts, pts_count=updates.pts_count ), {u.id: u for u in diff.users}, {c.id: c for c in diff.chats} )) else: if diff.other_updates: # The other_updates list can be empty self.dispatcher.updates_queue.put_nowait((diff.other_updates[0], {}, {})) elif isinstance(updates, raw.types.UpdateShort): self.dispatcher.updates_queue.put_nowait((updates.update, {}, {})) elif isinstance(updates, raw.types.UpdatesTooLong): log.info(updates) def load_config(self): parser = ConfigParser() parser.read(str(self.config_file)) if self.bot_token: pass else: self.bot_token = parser.get("pyrogram", "bot_token", fallback=None) if self.api_id and self.api_hash: pass else: if parser.has_section("pyrogram"): self.api_id = parser.getint("pyrogram", "api_id") self.api_hash = parser.get("pyrogram", "api_hash") else: raise AttributeError("No API Key found. More info: https://docs.pyrogram.org/intro/setup") for option in ["app_version", "device_model", "system_version", "lang_code"]: if getattr(self, option): pass else: if parser.has_section("pyrogram"): setattr(self, option, parser.get( "pyrogram", option, fallback=getattr(Client, option.upper()) )) else: setattr(self, option, getattr(Client, option.upper())) if self._proxy: self._proxy["enabled"] = bool(self._proxy.get("enabled", True)) else: self._proxy = {} if parser.has_section("proxy"): self._proxy["enabled"] = parser.getboolean("proxy", "enabled", fallback=True) self._proxy["hostname"] = parser.get("proxy", "hostname") self._proxy["port"] = parser.getint("proxy", "port") self._proxy["username"] = parser.get("proxy", "username", fallback=None) or None self._proxy["password"] = parser.get("proxy", "password", fallback=None) or None if self.plugins: self.plugins = { "enabled": bool(self.plugins.get("enabled", True)), "root": self.plugins.get("root", None), "include": self.plugins.get("include", []), "exclude": self.plugins.get("exclude", []) } else: try: section = parser["plugins"] self.plugins = { "enabled": section.getboolean("enabled", True), "root": section.get("root", None), "include": section.get("include", []), "exclude": section.get("exclude", []) } include = self.plugins["include"] exclude = self.plugins["exclude"] if include: self.plugins["include"] = include.strip().split("\n") if exclude: self.plugins["exclude"] = exclude.strip().split("\n") except KeyError: self.plugins = None async def load_session(self): await self.storage.open() session_empty = any([ await self.storage.test_mode() is None, await self.storage.auth_key() is None, await self.storage.user_id() is None, await self.storage.is_bot() is None ]) if session_empty: await self.storage.dc_id(2) await self.storage.date(0) await self.storage.test_mode(self.test_mode) await self.storage.auth_key( await Auth( self, await self.storage.dc_id(), await self.storage.test_mode() ).create() ) await self.storage.user_id(None) await self.storage.is_bot(None) def load_plugins(self): if self.plugins: plugins = self.plugins.copy() for option in ["include", "exclude"]: if plugins[option]: plugins[option] = [ (i.split()[0], i.split()[1:] or None) for i in self.plugins[option] ] else: return if plugins.get("enabled", False): root = plugins["root"] include = plugins["include"] exclude = plugins["exclude"] count = 0 if not include: for path in sorted(Path(root.replace(".", "/")).rglob("*.py")): module_path = '.'.join(path.parent.parts + (path.stem,)) module = import_module(module_path) for name in vars(module).keys(): # noinspection PyBroadException try: handler, group = getattr(module, name).handler if isinstance(handler, Handler) and isinstance(group, int): self.add_handler(handler, group) log.info('[{}] [LOAD] {}("{}") in group {} from "{}"'.format( self.session_name, type(handler).__name__, name, group, module_path)) count += 1 except Exception: pass else: for path, handlers in include: module_path = root + "." + path warn_non_existent_functions = True try: module = import_module(module_path) except ImportError: log.warning(f'[{self.session_name}] [LOAD] Ignoring non-existent module "{module_path}"') continue if "__path__" in dir(module): log.warning(f'[{self.session_name}] [LOAD] Ignoring namespace "{module_path}"') continue if handlers is None: handlers = vars(module).keys() warn_non_existent_functions = False for name in handlers: # noinspection PyBroadException try: handler, group = getattr(module, name).handler if isinstance(handler, Handler) and isinstance(group, int): self.add_handler(handler, group) log.info('[{}] [LOAD] {}("{}") in group {} from "{}"'.format( self.session_name, type(handler).__name__, name, group, module_path)) count += 1 except Exception: if warn_non_existent_functions: log.warning('[{}] [LOAD] Ignoring non-existent function "{}" from "{}"'.format( self.session_name, name, module_path)) if exclude: for path, handlers in exclude: module_path = root + "." + path warn_non_existent_functions = True try: module = import_module(module_path) except ImportError: log.warning(f'[{self.session_name}] [UNLOAD] Ignoring non-existent module "{module_path}"') continue if "__path__" in dir(module): log.warning(f'[{self.session_name}] [UNLOAD] Ignoring namespace "{module_path}"') continue if handlers is None: handlers = vars(module).keys() warn_non_existent_functions = False for name in handlers: # noinspection PyBroadException try: handler, group = getattr(module, name).handler if isinstance(handler, Handler) and isinstance(group, int): self.remove_handler(handler, group) log.info('[{}] [UNLOAD] {}("{}") from group {} in "{}"'.format( self.session_name, type(handler).__name__, name, group, module_path)) count -= 1 except Exception: if warn_non_existent_functions: log.warning('[{}] [UNLOAD] Ignoring non-existent function "{}" from "{}"'.format( self.session_name, name, module_path)) if count > 0: log.info('[{}] Successfully loaded {} plugin{} from "{}"'.format( self.session_name, count, "s" if count > 1 else "", root)) else: log.warning(f'[{self.session_name}] No plugin loaded from "{root}"') async def get_file( self, file_id: FileId, file_size: int, progress: callable, progress_args: tuple = () ) -> str: dc_id = file_id.dc_id async with self.media_sessions_lock: session = self.media_sessions.get(dc_id, None) if session is None: if dc_id != await self.storage.dc_id(): session = Session( self, dc_id, await Auth(self, dc_id, await self.storage.test_mode()).create(), await self.storage.test_mode(), is_media=True ) await session.start() for _ in range(3): exported_auth = await self.send( raw.functions.auth.ExportAuthorization( dc_id=dc_id ) ) try: await session.send( raw.functions.auth.ImportAuthorization( id=exported_auth.id, bytes=exported_auth.bytes ) ) except AuthBytesInvalid: continue else: break else: await session.stop() raise AuthBytesInvalid else: session = Session( self, dc_id, await self.storage.auth_key(), await self.storage.test_mode(), is_media=True ) await session.start() self.media_sessions[dc_id] = session file_type = file_id.file_type if file_type == FileType.CHAT_PHOTO: if file_id.chat_id > 0: peer = raw.types.InputPeerUser( user_id=file_id.chat_id, access_hash=file_id.chat_access_hash ) else: if file_id.chat_access_hash == 0: peer = raw.types.InputPeerChat( chat_id=-file_id.chat_id ) else: peer = raw.types.InputPeerChannel( channel_id=utils.get_channel_id(file_id.chat_id), access_hash=file_id.chat_access_hash ) location = raw.types.InputPeerPhotoFileLocation( peer=peer, volume_id=file_id.volume_id, local_id=file_id.local_id, big=file_id.thumbnail_source == ThumbnailSource.CHAT_PHOTO_BIG ) elif file_type == FileType.PHOTO: location = raw.types.InputPhotoFileLocation( id=file_id.media_id, access_hash=file_id.access_hash, file_reference=file_id.file_reference, thumb_size=file_id.thumbnail_size ) else: location = raw.types.InputDocumentFileLocation( id=file_id.media_id, access_hash=file_id.access_hash, file_reference=file_id.file_reference, thumb_size=file_id.thumbnail_size ) limit = 1024 * 1024 offset = 0 file_name = "" try: r = await session.send( raw.functions.upload.GetFile( location=location, offset=offset, limit=limit ), sleep_threshold=30 ) if isinstance(r, raw.types.upload.File): with tempfile.NamedTemporaryFile("wb", delete=False) as f: file_name = f.name while True: chunk = r.bytes if not chunk: break f.write(chunk) offset += limit if progress: func = functools.partial( progress, min(offset, file_size) if file_size != 0 else offset, file_size, *progress_args ) if inspect.iscoroutinefunction(progress): await func() else: await self.loop.run_in_executor(self.executor, func) r = await session.send( raw.functions.upload.GetFile( location=location, offset=offset, limit=limit ), sleep_threshold=30 ) elif isinstance(r, raw.types.upload.FileCdnRedirect): async with self.media_sessions_lock: cdn_session = self.media_sessions.get(r.dc_id, None) if cdn_session is None: cdn_session = Session( self, r.dc_id, await Auth(self, r.dc_id, await self.storage.test_mode()).create(), await self.storage.test_mode(), is_media=True, is_cdn=True ) await cdn_session.start() self.media_sessions[r.dc_id] = cdn_session try: with tempfile.NamedTemporaryFile("wb", delete=False) as f: file_name = f.name while True: r2 = await cdn_session.send( raw.functions.upload.GetCdnFile( file_token=r.file_token, offset=offset, limit=limit ) ) if isinstance(r2, raw.types.upload.CdnFileReuploadNeeded): try: await session.send( raw.functions.upload.ReuploadCdnFile( file_token=r.file_token, request_token=r2.request_token ) ) except VolumeLocNotFound: break else: continue chunk = r2.bytes # https://core.telegram.org/cdn#decrypting-files decrypted_chunk = aes.ctr256_decrypt( chunk, r.encryption_key, bytearray( r.encryption_iv[:-4] + (offset // 16).to_bytes(4, "big") ) ) hashes = await session.send( raw.functions.upload.GetCdnFileHashes( file_token=r.file_token, offset=offset ) ) # https://core.telegram.org/cdn#verifying-files for i, h in enumerate(hashes): cdn_chunk = decrypted_chunk[h.limit * i: h.limit * (i + 1)] assert h.hash == sha256(cdn_chunk).digest(), f"Invalid CDN hash part {i}" f.write(decrypted_chunk) offset += limit if progress: func = functools.partial( progress, min(offset, file_size) if file_size != 0 else offset, file_size, *progress_args ) if inspect.iscoroutinefunction(progress): await func() else: await self.loop.run_in_executor(self.executor, func) if len(chunk) < limit: break except Exception as e: raise e except Exception as e: if not isinstance(e, pyrogram.StopTransmission): log.error(e, exc_info=True) try: os.remove(file_name) except OSError: pass return "" else: return file_name def guess_mime_type(self, filename: str) -> Optional[str]: return self.mimetypes.guess_type(filename)[0] def guess_extension(self, mime_type: str) -> Optional[str]: return self.mimetypes.guess_extension(mime_type)