813 lines
26 KiB
Python
813 lines
26 KiB
Python
# Pyrogram - Telegram MTProto API Client Library for Python
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# Copyright (C) 2017-2018 Dan Tès <https://github.com/delivrance>
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#
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# This file is part of Pyrogram.
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#
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# Pyrogram is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published
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# by 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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# Pyrogram 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 Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with Pyrogram. If not, see <http://www.gnu.org/licenses/>.
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import asyncio
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import logging
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import platform
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from datetime import datetime, timedelta
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from hashlib import sha1
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from io import BytesIO
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import pyrogram
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from pyrogram import __copyright__, __license__, __version__
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from pyrogram.api import functions, types, core
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from pyrogram.api.all import layer
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from pyrogram.api.core import Object, MsgContainer, Long, FutureSalt, Int
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from pyrogram.api.errors import Error, InternalServerError
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from pyrogram.connection import Connection
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from pyrogram.crypto import MTProto
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from .internals import MsgId, MsgFactory, DataCenter
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log = logging.getLogger(__name__)
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class Result:
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def __init__(self):
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self.value = None
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self.event = asyncio.Event()
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class Session:
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VERSION = __version__
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APP_VERSION = "Pyrogram \U0001f525 {}".format(VERSION)
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DEVICE_MODEL = "{} {}".format(
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platform.python_implementation(),
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platform.python_version()
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)
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SYSTEM_VERSION = "{} {}".format(
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platform.system(),
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platform.release()
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)
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NET_WORKERS = 1
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WAIT_TIMEOUT = 15
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MAX_RETRIES = 5
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ACKS_THRESHOLD = 8
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PING_INTERVAL = 5
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notice_displayed = False
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BAD_MSG_DESCRIPTION = {
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16: "[16] msg_id too low, the client time has to be synchronized",
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17: "[17] msg_id too high, the client time has to be synchronized",
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18: "[18] incorrect two lower order msg_id bits, the server expects client message msg_id to be divisible by 4",
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19: "[19] container msg_id is the same as msg_id of a previously received message",
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20: "[20] message too old, it cannot be verified by the server",
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32: "[32] msg_seqno too low",
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33: "[33] msg_seqno too high",
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34: "[34] an even msg_seqno expected, but odd received",
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35: "[35] odd msg_seqno expected, but even received",
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48: "[48] incorrect server salt",
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64: "[64] invalid container"
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}
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def __init__(self,
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dc_id: int,
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test_mode: bool,
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proxy: dict,
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auth_key: bytes,
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api_id: int,
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is_cdn: bool = False,
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client: pyrogram = None):
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if not Session.notice_displayed:
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print("Pyrogram v{}, {}".format(__version__, __copyright__))
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print("Licensed under the terms of the " + __license__, end="\n\n")
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Session.notice_displayed = True
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self.dc_id = dc_id
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self.test_mode = test_mode
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self.proxy = proxy
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self.api_id = api_id
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self.is_cdn = is_cdn
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self.client = client
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self.connection = None
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self.auth_key = auth_key
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self.auth_key_id = sha1(auth_key).digest()[-8:]
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self.session_id = Long(MsgId())
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self.msg_factory = MsgFactory()
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self.current_salt = None
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self.pending_acks = set()
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self.recv_queue = asyncio.Queue()
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self.results = {}
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self.ping_task = None
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self.ping_task_event = asyncio.Event()
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self.next_salt_task = None
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self.next_salt_task_event = asyncio.Event()
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self.net_worker_task = None
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self.recv_task = None
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self.is_connected = asyncio.Event()
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async def start(self):
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while True:
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self.connection = Connection(DataCenter(self.dc_id, self.test_mode), self.proxy)
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try:
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await self.connection.connect()
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self.net_worker_task = asyncio.ensure_future(self.net_worker())
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self.recv_task = asyncio.ensure_future(self.recv())
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self.current_salt = FutureSalt(0, 0, MTProto.INITIAL_SALT)
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self.current_salt = FutureSalt(0, 0, (await self._send(functions.Ping(0))).new_server_salt)
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self.current_salt = (await self._send(functions.GetFutureSalts(1))).salts[0]
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self.next_salt_task = asyncio.ensure_future(self.next_salt())
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if not self.is_cdn:
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await self._send(
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functions.InvokeWithLayer(
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layer,
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functions.InitConnection(
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self.api_id,
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self.DEVICE_MODEL,
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self.SYSTEM_VERSION,
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self.APP_VERSION,
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"en", "", "en",
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functions.help.GetConfig(),
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)
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)
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)
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self.ping_task = asyncio.ensure_future(self.ping())
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log.info("Connection inited: Layer {}".format(layer))
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except (OSError, TimeoutError, Error):
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await self.stop()
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except Exception as e:
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await self.stop()
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raise e
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else:
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break
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self.is_connected.set()
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log.debug("Session started")
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async def stop(self):
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self.is_connected.clear()
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self.ping_task_event.set()
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self.next_salt_task_event.set()
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if self.ping_task is not None:
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await self.ping_task
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if self.next_salt_task is not None:
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await self.next_salt_task
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self.ping_task_event.clear()
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self.next_salt_task_event.clear()
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self.connection.close()
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await self.recv_task
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self.recv_queue.put_nowait(None)
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await self.net_worker_task
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for i in self.results.values():
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i.event.set()
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if self.client and callable(self.client.disconnect_handler):
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try:
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self.client.disconnect_handler(self.client)
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except Exception as e:
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log.error(e, exc_info=True)
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log.debug("Session stopped")
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async def restart(self):
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self.stop()
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self.start()
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async def net_worker(self):
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log.info("NetWorkerTask started")
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while True:
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packet = await self.recv_queue.get()
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if packet is None:
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break
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try:
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data = MTProto.unpack(
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BytesIO(packet),
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self.current_salt.salt,
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self.session_id,
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self.auth_key,
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self.auth_key_id
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)
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messages = (
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data.body.messages
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if isinstance(data.body, MsgContainer)
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else [data]
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)
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log.debug(data)
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for msg in messages:
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if msg.seq_no % 2 != 0:
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if msg.msg_id in self.pending_acks:
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continue
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else:
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self.pending_acks.add(msg.msg_id)
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if isinstance(msg.body, (types.MsgDetailedInfo, types.MsgNewDetailedInfo)):
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self.pending_acks.add(msg.body.answer_msg_id)
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continue
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if isinstance(msg.body, types.NewSessionCreated):
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continue
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msg_id = None
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if isinstance(msg.body, (types.BadMsgNotification, types.BadServerSalt)):
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msg_id = msg.body.bad_msg_id
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elif isinstance(msg.body, (core.FutureSalts, types.RpcResult)):
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msg_id = msg.body.req_msg_id
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elif isinstance(msg.body, types.Pong):
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msg_id = msg.body.msg_id
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else:
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if self.client is not None:
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self.client.updates_queue.put_nowait(msg.body)
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if msg_id in self.results:
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self.results[msg_id].value = getattr(msg.body, "result", msg.body)
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self.results[msg_id].event.set()
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if len(self.pending_acks) >= self.ACKS_THRESHOLD:
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log.info("Send {} acks".format(len(self.pending_acks)))
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try:
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await self._send(types.MsgsAck(list(self.pending_acks)), False)
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except (OSError, TimeoutError):
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pass
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else:
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self.pending_acks.clear()
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except Exception as e:
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log.error(e, exc_info=True)
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log.info("NetWorkerTask stopped")
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async def ping(self):
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log.info("PingTask started")
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while True:
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try:
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await asyncio.wait_for(self.ping_task_event.wait(), self.PING_INTERVAL)
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except asyncio.TimeoutError:
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pass
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if self.ping_task_event.is_set():
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break
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try:
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await self._send(functions.PingDelayDisconnect(
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0, self.WAIT_TIMEOUT + 10
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), False)
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except (OSError, TimeoutError, Error):
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pass
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log.info("PingTask stopped")
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async def next_salt(self):
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log.info("NextSaltTask started")
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while True:
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now = datetime.now()
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# Seconds to wait until middle-overlap, which is
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# 15 minutes before/after the current/next salt end/start time
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dt = (self.current_salt.valid_until - now).total_seconds() - 900
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log.debug("Current salt: {} | Next salt in {:.0f}m {:.0f}s ({})".format(
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self.current_salt.salt,
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dt // 60,
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dt % 60,
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now + timedelta(seconds=dt)
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))
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try:
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await asyncio.wait_for(self.next_salt_task_event.wait(), dt)
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except asyncio.TimeoutError:
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pass
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if self.next_salt_task_event.is_set():
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break
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try:
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self.current_salt = (await self._send(functions.GetFutureSalts(1))).salts[0]
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except (OSError, TimeoutError, Error):
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self.connection.close()
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break
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log.info("NextSaltTask stopped")
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async def recv(self):
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log.info("RecvTask started")
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while True:
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packet = await self.connection.recv()
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if packet is None or len(packet) == 4:
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if packet:
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log.warning("Server sent \"{}\"".format(Int.read(BytesIO(packet))))
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if self.is_connected.is_set():
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asyncio.ensure_future(self.restart())
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break
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self.recv_queue.put_nowait(packet)
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log.info("RecvTask stopped")
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async def _send(self, data: Object, wait_response: bool = True):
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message = self.msg_factory(data)
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msg_id = message.msg_id
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if wait_response:
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self.results[msg_id] = Result()
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payload = MTProto.pack(
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message,
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self.current_salt.salt,
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self.session_id,
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self.auth_key,
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self.auth_key_id
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)
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try:
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await self.connection.send(payload)
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except OSError as e:
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self.results.pop(msg_id, None)
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raise e
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if wait_response:
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try:
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await asyncio.wait_for(self.results[msg_id].event.wait(), self.WAIT_TIMEOUT)
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except asyncio.TimeoutError:
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pass
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result = self.results.pop(msg_id).value
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if result is None:
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raise TimeoutError
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elif isinstance(result, types.RpcError):
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Error.raise_it(result, type(data))
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elif isinstance(result, types.BadMsgNotification):
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raise Exception(self.BAD_MSG_DESCRIPTION.get(
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result.error_code,
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"Error code {}".format(result.error_code)
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))
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else:
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return result
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async def send(self, data: Object, retries: int = MAX_RETRIES):
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try:
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await asyncio.wait_for(self.is_connected.wait(), self.WAIT_TIMEOUT)
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except asyncio.TimeoutError:
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pass
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try:
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return await self._send(data)
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except (OSError, TimeoutError, InternalServerError) as e:
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if retries == 0:
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raise e from None
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(log.warning if retries < 3 else log.info)(
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"{}: {} Retrying {}".format(
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Session.MAX_RETRIES - retries,
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datetime.now(), type(data)))
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await asyncio.sleep(0.5)
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return await self.send(data, retries - 1)
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# class Result:
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# def __init__(self):
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# self.value = None
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# self.event = Event()
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#
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#
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# class Session:
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# VERSION = __version__
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# APP_VERSION = "Pyrogram \U0001f525 {}".format(VERSION)
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#
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# DEVICE_MODEL = "{} {}".format(
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# platform.python_implementation(),
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# platform.python_version()
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# )
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#
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# SYSTEM_VERSION = "{} {}".format(
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# platform.system(),
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# platform.release()
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# )
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#
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# INITIAL_SALT = 0x616e67656c696361
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# NET_WORKERS = 1
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# WAIT_TIMEOUT = 15
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# MAX_RETRIES = 5
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# ACKS_THRESHOLD = 8
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# PING_INTERVAL = 5
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#
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# notice_displayed = False
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#
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# BAD_MSG_DESCRIPTION = {
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# 16: "[16] msg_id too low, the client time has to be synchronized",
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# 17: "[17] msg_id too high, the client time has to be synchronized",
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# 18: "[18] incorrect two lower order msg_id bits, the server expects client message msg_id to be divisible by 4",
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# 19: "[19] container msg_id is the same as msg_id of a previously received message",
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# 20: "[20] message too old, it cannot be verified by the server",
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# 32: "[32] msg_seqno too low",
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# 33: "[33] msg_seqno too high",
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# 34: "[34] an even msg_seqno expected, but odd received",
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# 35: "[35] odd msg_seqno expected, but even received",
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# 48: "[48] incorrect server salt",
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# 64: "[64] invalid container"
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# }
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#
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# def __init__(self,
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# dc_id: int,
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# test_mode: bool,
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# proxy: dict,
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# auth_key: bytes,
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# api_id: int,
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# is_cdn: bool = False,
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# client: pyrogram = None):
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# if not Session.notice_displayed:
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# print("Pyrogram v{}, {}".format(__version__, __copyright__))
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# print("Licensed under the terms of the " + __license__, end="\n\n")
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# Session.notice_displayed = True
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#
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# self.dc_id = dc_id
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# self.test_mode = test_mode
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# self.proxy = proxy
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# self.api_id = api_id
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# self.is_cdn = is_cdn
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# self.client = client
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#
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# self.connection = None
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#
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# self.auth_key = auth_key
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# self.auth_key_id = sha1(auth_key).digest()[-8:]
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#
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# self.session_id = Long(MsgId())
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# self.msg_factory = MsgFactory()
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#
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# self.current_salt = None
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#
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# self.pending_acks = set()
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#
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# self.recv_queue = Queue()
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# self.results = {}
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#
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# self.ping_thread = None
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# self.ping_thread_event = Event()
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#
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# self.next_salt_thread = None
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# self.next_salt_thread_event = Event()
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#
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# self.net_worker_list = []
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#
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# self.is_connected = Event()
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#
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# def start(self):
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# while True:
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# self.connection = Connection(DataCenter(self.dc_id, self.test_mode), self.proxy)
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#
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# try:
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# self.connection.connect()
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#
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# for i in range(self.NET_WORKERS):
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# self.net_worker_list.append(
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# Thread(
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# target=self.net_worker,
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# name="NetWorker#{}".format(i + 1)
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# )
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# )
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#
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# self.net_worker_list[-1].start()
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#
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# Thread(target=self.recv, name="RecvThread").start()
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#
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# self.current_salt = FutureSalt(0, 0, self.INITIAL_SALT)
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# self.current_salt = FutureSalt(0, 0, self._send(functions.Ping(0)).new_server_salt)
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# self.current_salt = self._send(functions.GetFutureSalts(1)).salts[0]
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#
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# self.next_salt_thread = Thread(target=self.next_salt, name="NextSaltThread")
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# self.next_salt_thread.start()
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#
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# if not self.is_cdn:
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# self._send(
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# functions.InvokeWithLayer(
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# layer,
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# functions.InitConnection(
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# self.api_id,
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# self.DEVICE_MODEL,
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# self.SYSTEM_VERSION,
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# self.APP_VERSION,
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# "en", "", "en",
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# functions.help.GetConfig(),
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# )
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# )
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# )
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#
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# self.ping_thread = Thread(target=self.ping, name="PingThread")
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# self.ping_thread.start()
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#
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# log.info("Connection inited: Layer {}".format(layer))
|
|
# except (OSError, TimeoutError, Error):
|
|
# self.stop()
|
|
# except Exception as e:
|
|
# self.stop()
|
|
# raise e
|
|
# else:
|
|
# break
|
|
#
|
|
# self.is_connected.set()
|
|
#
|
|
# log.debug("Session started")
|
|
#
|
|
# def stop(self):
|
|
# self.is_connected.clear()
|
|
#
|
|
# self.ping_thread_event.set()
|
|
# self.next_salt_thread_event.set()
|
|
#
|
|
# if self.ping_thread is not None:
|
|
# self.ping_thread.join()
|
|
#
|
|
# if self.next_salt_thread is not None:
|
|
# self.next_salt_thread.join()
|
|
#
|
|
# self.ping_thread_event.clear()
|
|
# self.next_salt_thread_event.clear()
|
|
#
|
|
# self.connection.close()
|
|
#
|
|
# for i in range(self.NET_WORKERS):
|
|
# self.recv_queue.put(None)
|
|
#
|
|
# for i in self.net_worker_list:
|
|
# i.join()
|
|
#
|
|
# self.net_worker_list.clear()
|
|
#
|
|
# for i in self.results.values():
|
|
# i.event.set()
|
|
#
|
|
# if self.client and callable(self.client.disconnect_handler):
|
|
# try:
|
|
# self.client.disconnect_handler(self.client)
|
|
# except Exception as e:
|
|
# log.error(e, exc_info=True)
|
|
#
|
|
# log.debug("Session stopped")
|
|
#
|
|
# def restart(self):
|
|
# self.stop()
|
|
# self.start()
|
|
#
|
|
# def pack(self, message: Message):
|
|
# data = Long(self.current_salt.salt) + self.session_id + message.write()
|
|
# padding = urandom(-(len(data) + 12) % 16 + 12)
|
|
#
|
|
# # 88 = 88 + 0 (outgoing message)
|
|
# msg_key_large = sha256(self.auth_key[88: 88 + 32] + data + padding).digest()
|
|
# msg_key = msg_key_large[8:24]
|
|
# aes_key, aes_iv = KDF(self.auth_key, msg_key, True)
|
|
#
|
|
# return self.auth_key_id + msg_key + AES.ige256_encrypt(data + padding, aes_key, aes_iv)
|
|
#
|
|
# def unpack(self, b: BytesIO) -> Message:
|
|
# assert b.read(8) == self.auth_key_id, b.getvalue()
|
|
#
|
|
# msg_key = b.read(16)
|
|
# aes_key, aes_iv = KDF(self.auth_key, msg_key, False)
|
|
# data = BytesIO(AES.ige256_decrypt(b.read(), aes_key, aes_iv))
|
|
# data.read(8)
|
|
#
|
|
# # https://core.telegram.org/mtproto/security_guidelines#checking-session-id
|
|
# assert data.read(8) == self.session_id
|
|
#
|
|
# message = Message.read(data)
|
|
#
|
|
# # https://core.telegram.org/mtproto/security_guidelines#checking-sha256-hash-value-of-msg-key
|
|
# # https://core.telegram.org/mtproto/security_guidelines#checking-message-length
|
|
# # 96 = 88 + 8 (incoming message)
|
|
# assert msg_key == sha256(self.auth_key[96:96 + 32] + data.getvalue()).digest()[8:24]
|
|
#
|
|
# # https://core.telegram.org/mtproto/security_guidelines#checking-msg-id
|
|
# # TODO: check for lower msg_ids
|
|
# assert message.msg_id % 2 != 0
|
|
#
|
|
# return message
|
|
#
|
|
# def net_worker(self):
|
|
# name = threading.current_thread().name
|
|
# log.debug("{} started".format(name))
|
|
#
|
|
# while True:
|
|
# packet = self.recv_queue.get()
|
|
#
|
|
# if packet is None:
|
|
# break
|
|
#
|
|
# try:
|
|
# data = self.unpack(BytesIO(packet))
|
|
#
|
|
# messages = (
|
|
# data.body.messages
|
|
# if isinstance(data.body, MsgContainer)
|
|
# else [data]
|
|
# )
|
|
#
|
|
# log.debug(data)
|
|
#
|
|
# for msg in messages:
|
|
# if msg.seq_no % 2 != 0:
|
|
# if msg.msg_id in self.pending_acks:
|
|
# continue
|
|
# else:
|
|
# self.pending_acks.add(msg.msg_id)
|
|
#
|
|
# if isinstance(msg.body, (types.MsgDetailedInfo, types.MsgNewDetailedInfo)):
|
|
# self.pending_acks.add(msg.body.answer_msg_id)
|
|
# continue
|
|
#
|
|
# if isinstance(msg.body, types.NewSessionCreated):
|
|
# continue
|
|
#
|
|
# msg_id = None
|
|
#
|
|
# if isinstance(msg.body, (types.BadMsgNotification, types.BadServerSalt)):
|
|
# msg_id = msg.body.bad_msg_id
|
|
# elif isinstance(msg.body, (core.FutureSalts, types.RpcResult)):
|
|
# msg_id = msg.body.req_msg_id
|
|
# elif isinstance(msg.body, types.Pong):
|
|
# msg_id = msg.body.msg_id
|
|
# else:
|
|
# if self.client is not None:
|
|
# self.client.updates_queue.put(msg.body)
|
|
#
|
|
# if msg_id in self.results:
|
|
# self.results[msg_id].value = getattr(msg.body, "result", msg.body)
|
|
# self.results[msg_id].event.set()
|
|
#
|
|
# if len(self.pending_acks) >= self.ACKS_THRESHOLD:
|
|
# log.info("Send {} acks".format(len(self.pending_acks)))
|
|
#
|
|
# try:
|
|
# self._send(types.MsgsAck(list(self.pending_acks)), False)
|
|
# except (OSError, TimeoutError):
|
|
# pass
|
|
# else:
|
|
# self.pending_acks.clear()
|
|
# except Exception as e:
|
|
# log.error(e, exc_info=True)
|
|
#
|
|
# log.debug("{} stopped".format(name))
|
|
#
|
|
# def ping(self):
|
|
# log.debug("PingThread started")
|
|
#
|
|
# while True:
|
|
# self.ping_thread_event.wait(self.PING_INTERVAL)
|
|
#
|
|
# if self.ping_thread_event.is_set():
|
|
# break
|
|
#
|
|
# try:
|
|
# self._send(functions.PingDelayDisconnect(
|
|
# 0, self.WAIT_TIMEOUT + 10
|
|
# ), False)
|
|
# except (OSError, TimeoutError, Error):
|
|
# pass
|
|
#
|
|
# log.debug("PingThread stopped")
|
|
#
|
|
# def next_salt(self):
|
|
# log.debug("NextSaltThread started")
|
|
#
|
|
# while True:
|
|
# now = datetime.now()
|
|
#
|
|
# # Seconds to wait until middle-overlap, which is
|
|
# # 15 minutes before/after the current/next salt end/start time
|
|
# dt = (self.current_salt.valid_until - now).total_seconds() - 900
|
|
#
|
|
# log.debug("Current salt: {} | Next salt in {:.0f}m {:.0f}s ({})".format(
|
|
# self.current_salt.salt,
|
|
# dt // 60,
|
|
# dt % 60,
|
|
# now + timedelta(seconds=dt)
|
|
# ))
|
|
#
|
|
# self.next_salt_thread_event.wait(dt)
|
|
#
|
|
# if self.next_salt_thread_event.is_set():
|
|
# break
|
|
#
|
|
# try:
|
|
# self.current_salt = self._send(functions.GetFutureSalts(1)).salts[0]
|
|
# except (OSError, TimeoutError, Error):
|
|
# self.connection.close()
|
|
# break
|
|
#
|
|
# log.debug("NextSaltThread stopped")
|
|
#
|
|
# def recv(self):
|
|
# log.debug("RecvThread started")
|
|
#
|
|
# while True:
|
|
# packet = self.connection.recv()
|
|
#
|
|
# if packet is None or len(packet) == 4:
|
|
# if packet:
|
|
# log.warning("Server sent \"{}\"".format(Int.read(BytesIO(packet))))
|
|
#
|
|
# if self.is_connected.is_set():
|
|
# Thread(target=self.restart, name="RestartThread").start()
|
|
# break
|
|
#
|
|
# self.recv_queue.put(packet)
|
|
#
|
|
# log.debug("RecvThread stopped")
|
|
#
|
|
# def _send(self, data: Object, wait_response: bool = True):
|
|
# message = self.msg_factory(data)
|
|
# msg_id = message.msg_id
|
|
#
|
|
# if wait_response:
|
|
# self.results[msg_id] = Result()
|
|
#
|
|
# payload = self.pack(message)
|
|
#
|
|
# try:
|
|
# self.connection.send(payload)
|
|
# except OSError as e:
|
|
# self.results.pop(msg_id, None)
|
|
# raise e
|
|
#
|
|
# if wait_response:
|
|
# self.results[msg_id].event.wait(self.WAIT_TIMEOUT)
|
|
# result = self.results.pop(msg_id).value
|
|
#
|
|
# if result is None:
|
|
# raise TimeoutError
|
|
# elif isinstance(result, types.RpcError):
|
|
# Error.raise_it(result, type(data))
|
|
# elif isinstance(result, types.BadMsgNotification):
|
|
# raise Exception(self.BAD_MSG_DESCRIPTION.get(
|
|
# result.error_code,
|
|
# "Error code {}".format(result.error_code)
|
|
# ))
|
|
# else:
|
|
# return result
|
|
#
|
|
# def send(self, data: Object, retries: int = MAX_RETRIES):
|
|
# self.is_connected.wait(self.WAIT_TIMEOUT)
|
|
#
|
|
# try:
|
|
# return self._send(data)
|
|
# except (OSError, TimeoutError, InternalServerError) as e:
|
|
# if retries == 0:
|
|
# raise e from None
|
|
#
|
|
# (log.warning if retries < 3 else log.info)(
|
|
# "{}: {} Retrying {}".format(
|
|
# Session.MAX_RETRIES - retries,
|
|
# datetime.now(), type(data)))
|
|
#
|
|
# time.sleep(0.5)
|
|
# return self.send(data, retries - 1)
|