422 lines
14 KiB
Python
422 lines
14 KiB
Python
# Pyrogram - Telegram MTProto API Client Library for Python
|
|
# Copyright (C) 2017-2019 Dan Tès <https://github.com/delivrance>
|
|
#
|
|
# 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 <http://www.gnu.org/licenses/>.
|
|
|
|
import asyncio
|
|
import logging
|
|
from datetime import datetime, timedelta
|
|
from hashlib import sha1
|
|
from io import BytesIO
|
|
|
|
import pyrogram
|
|
from pyrogram import __copyright__, __license__, __version__
|
|
from pyrogram.api import functions, types
|
|
from pyrogram.api.all import layer
|
|
from pyrogram.api.core import TLObject, MsgContainer, Int, Long, FutureSalt, FutureSalts
|
|
from pyrogram.connection import Connection
|
|
from pyrogram.crypto import MTProto
|
|
from pyrogram.errors import RPCError, InternalServerError, AuthKeyDuplicated
|
|
|
|
from .internals import MsgId, MsgFactory
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class Result:
|
|
def __init__(self):
|
|
self.value = None
|
|
self.event = asyncio.Event()
|
|
|
|
|
|
class Session:
|
|
INITIAL_SALT = 0x616e67656c696361
|
|
NET_WORKERS = 1
|
|
START_TIMEOUT = 1
|
|
WAIT_TIMEOUT = 15
|
|
MAX_RETRIES = 5
|
|
ACKS_THRESHOLD = 8
|
|
PING_INTERVAL = 5
|
|
|
|
notice_displayed = False
|
|
|
|
BAD_MSG_DESCRIPTION = {
|
|
16: "[16] msg_id too low, the client time has to be synchronized",
|
|
17: "[17] msg_id too high, the client time has to be synchronized",
|
|
18: "[18] incorrect two lower order msg_id bits, the server expects client message msg_id to be divisible by 4",
|
|
19: "[19] container msg_id is the same as msg_id of a previously received message",
|
|
20: "[20] message too old, it cannot be verified by the server",
|
|
32: "[32] msg_seqno too low",
|
|
33: "[33] msg_seqno too high",
|
|
34: "[34] an even msg_seqno expected, but odd received",
|
|
35: "[35] odd msg_seqno expected, but even received",
|
|
48: "[48] incorrect server salt",
|
|
64: "[64] invalid container"
|
|
}
|
|
|
|
def __init__(
|
|
self,
|
|
client: pyrogram,
|
|
dc_id: int,
|
|
auth_key: bytes,
|
|
is_media: bool = False,
|
|
is_cdn: bool = False
|
|
):
|
|
if not Session.notice_displayed:
|
|
print("Pyrogram v{}, {}".format(__version__, __copyright__))
|
|
print("Licensed under the terms of the " + __license__, end="\n\n")
|
|
Session.notice_displayed = True
|
|
|
|
self.client = client
|
|
self.dc_id = dc_id
|
|
self.auth_key = auth_key
|
|
self.is_media = is_media
|
|
self.is_cdn = is_cdn
|
|
|
|
self.connection = None
|
|
|
|
self.auth_key_id = sha1(auth_key).digest()[-8:]
|
|
|
|
self.session_id = Long(MsgId())
|
|
self.msg_factory = MsgFactory()
|
|
|
|
self.current_salt = None
|
|
|
|
self.pending_acks = set()
|
|
|
|
self.recv_queue = asyncio.Queue()
|
|
self.results = {}
|
|
|
|
self.ping_task = None
|
|
self.ping_task_event = asyncio.Event()
|
|
|
|
self.next_salt_task = None
|
|
self.next_salt_task_event = asyncio.Event()
|
|
|
|
self.net_worker_task = None
|
|
self.recv_task = None
|
|
|
|
self.is_connected = asyncio.Event()
|
|
|
|
async def start(self):
|
|
while True:
|
|
self.connection = Connection(
|
|
self.dc_id,
|
|
self.client.storage.test_mode,
|
|
self.client.ipv6,
|
|
self.client.proxy
|
|
)
|
|
|
|
try:
|
|
await self.connection.connect()
|
|
|
|
self.net_worker_task = asyncio.create_task(self.net_worker())
|
|
self.recv_task = asyncio.create_task(self.recv())
|
|
|
|
self.current_salt = FutureSalt(0, 0, Session.INITIAL_SALT)
|
|
self.current_salt = FutureSalt(
|
|
0, 0,
|
|
(await self._send(
|
|
functions.Ping(ping_id=0),
|
|
timeout=self.START_TIMEOUT
|
|
)).new_server_salt
|
|
)
|
|
self.current_salt = \
|
|
(await self._send(functions.GetFutureSalts(num=1), timeout=self.START_TIMEOUT)).salts[0]
|
|
|
|
self.next_salt_task = asyncio.create_task(self.next_salt())
|
|
|
|
if not self.is_cdn:
|
|
await self._send(
|
|
functions.InvokeWithLayer(
|
|
layer=layer,
|
|
query=functions.InitConnection(
|
|
api_id=self.client.api_id,
|
|
app_version=self.client.app_version,
|
|
device_model=self.client.device_model,
|
|
system_version=self.client.system_version,
|
|
system_lang_code=self.client.lang_code,
|
|
lang_code=self.client.lang_code,
|
|
lang_pack="",
|
|
query=functions.help.GetConfig(),
|
|
)
|
|
),
|
|
timeout=self.START_TIMEOUT
|
|
)
|
|
|
|
self.ping_task = asyncio.create_task(self.ping())
|
|
|
|
log.info("Session initialized: Layer {}".format(layer))
|
|
log.info("Device: {} - {}".format(self.client.device_model, self.client.app_version))
|
|
log.info("System: {} ({})".format(self.client.system_version, self.client.lang_code.upper()))
|
|
|
|
except AuthKeyDuplicated as e:
|
|
await self.stop()
|
|
raise e
|
|
except (OSError, TimeoutError, RPCError):
|
|
await self.stop()
|
|
except Exception as e:
|
|
await self.stop()
|
|
raise e
|
|
else:
|
|
break
|
|
|
|
self.is_connected.set()
|
|
|
|
log.info("Session started")
|
|
|
|
async def stop(self):
|
|
self.is_connected.clear()
|
|
|
|
self.ping_task_event.set()
|
|
self.next_salt_task_event.set()
|
|
|
|
if self.ping_task is not None:
|
|
await self.ping_task
|
|
|
|
if self.next_salt_task is not None:
|
|
await self.next_salt_task
|
|
|
|
self.ping_task_event.clear()
|
|
self.next_salt_task_event.clear()
|
|
|
|
self.connection.close()
|
|
|
|
if self.recv_task:
|
|
await self.recv_task
|
|
|
|
if self.net_worker_task:
|
|
await self.net_worker_task
|
|
|
|
for i in self.results.values():
|
|
i.event.set()
|
|
|
|
if not self.is_media and callable(self.client.disconnect_handler):
|
|
try:
|
|
await self.client.disconnect_handler(self.client)
|
|
except Exception as e:
|
|
log.error(e, exc_info=True)
|
|
|
|
log.info("Session stopped")
|
|
|
|
async def restart(self):
|
|
await self.stop()
|
|
await self.start()
|
|
|
|
async def net_worker(self):
|
|
log.info("NetWorkerTask started")
|
|
|
|
while True:
|
|
packet = await self.recv_queue.get()
|
|
|
|
if packet is None:
|
|
break
|
|
|
|
try:
|
|
data = MTProto.unpack(
|
|
BytesIO(packet),
|
|
self.session_id,
|
|
self.auth_key,
|
|
self.auth_key_id
|
|
)
|
|
|
|
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, (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_nowait(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:
|
|
await self._send(types.MsgsAck(msg_ids=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.info("NetWorkerTask stopped")
|
|
|
|
async def ping(self):
|
|
log.info("PingTask started")
|
|
|
|
while True:
|
|
try:
|
|
await asyncio.wait_for(self.ping_task_event.wait(), self.PING_INTERVAL)
|
|
except asyncio.TimeoutError:
|
|
pass
|
|
else:
|
|
break
|
|
|
|
try:
|
|
await self._send(
|
|
functions.PingDelayDisconnect(
|
|
ping_id=0, disconnect_delay=self.WAIT_TIMEOUT + 10
|
|
), False
|
|
)
|
|
except (OSError, TimeoutError, RPCError):
|
|
pass
|
|
|
|
log.info("PingTask stopped")
|
|
|
|
async def next_salt(self):
|
|
log.info("NextSaltTask 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
|
|
valid_until = datetime.fromtimestamp(self.current_salt.valid_until)
|
|
dt = (valid_until - now).total_seconds() - 900
|
|
|
|
log.info("Next salt in {:.0f}m {:.0f}s ({})".format(
|
|
dt // 60, dt % 60,
|
|
now + timedelta(seconds=dt)
|
|
))
|
|
|
|
try:
|
|
await asyncio.wait_for(self.next_salt_task_event.wait(), dt)
|
|
except asyncio.TimeoutError:
|
|
pass
|
|
else:
|
|
break
|
|
|
|
try:
|
|
self.current_salt = (await self._send(functions.GetFutureSalts(num=1))).salts[0]
|
|
except (OSError, TimeoutError, RPCError):
|
|
self.connection.close()
|
|
break
|
|
|
|
log.info("NextSaltTask stopped")
|
|
|
|
async def recv(self):
|
|
log.info("RecvTask started")
|
|
|
|
while True:
|
|
packet = await self.connection.recv()
|
|
|
|
if packet is None or len(packet) == 4:
|
|
self.recv_queue.put_nowait(None)
|
|
|
|
if packet:
|
|
log.warning("Server sent \"{}\"".format(Int.read(BytesIO(packet))))
|
|
|
|
if self.is_connected.is_set():
|
|
asyncio.create_task(self.restart())
|
|
|
|
break
|
|
|
|
self.recv_queue.put_nowait(packet)
|
|
|
|
log.info("RecvTask stopped")
|
|
|
|
async def _send(self, data: TLObject, wait_response: bool = True, timeout: float = WAIT_TIMEOUT):
|
|
message = self.msg_factory(data)
|
|
msg_id = message.msg_id
|
|
|
|
if wait_response:
|
|
self.results[msg_id] = Result()
|
|
|
|
payload = MTProto.pack(
|
|
message,
|
|
self.current_salt.salt,
|
|
self.session_id,
|
|
self.auth_key,
|
|
self.auth_key_id
|
|
)
|
|
|
|
try:
|
|
await self.connection.send(payload)
|
|
except OSError as e:
|
|
self.results.pop(msg_id, None)
|
|
raise e
|
|
|
|
if wait_response:
|
|
try:
|
|
await asyncio.wait_for(self.results[msg_id].event.wait(), timeout)
|
|
except asyncio.TimeoutError:
|
|
pass
|
|
|
|
result = self.results.pop(msg_id).value
|
|
|
|
if result is None:
|
|
raise TimeoutError
|
|
elif isinstance(result, types.RpcError):
|
|
RPCError.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
|
|
|
|
async def send(self, data: TLObject, retries: int = MAX_RETRIES, timeout: float = WAIT_TIMEOUT):
|
|
try:
|
|
await asyncio.wait_for(self.is_connected.wait(), self.WAIT_TIMEOUT)
|
|
except asyncio.TimeoutError:
|
|
pass
|
|
|
|
try:
|
|
return await self._send(data, timeout=timeout)
|
|
except (OSError, TimeoutError, InternalServerError) as e:
|
|
if retries == 0:
|
|
raise e from None
|
|
|
|
(log.warning if retries < 2 else log.info)(
|
|
"{}: {} Retrying {}".format(
|
|
Session.MAX_RETRIES - retries + 1,
|
|
datetime.now(), type(data)))
|
|
|
|
await asyncio.sleep(0.5)
|
|
return await self.send(data, retries - 1, timeout)
|