mirror of
https://github.com/LonamiWebs/Telethon.git
synced 2024-11-22 01:16:35 +03:00
Fixed bugs when handling updates
GZipPacked updates are now handled correctly. Also, fixed another bug which did not allow resending a request when BadServerSalt occured.
This commit is contained in:
Lonami
parent
0068c0fd8b
commit
5b4be5b85e
8
main.py
8
main.py
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@ -42,7 +42,13 @@ if __name__ == '__main__':
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print('{}. {}'.format(i, display))
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# Let the user decide who they want to talk to
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i = int(input('Who do you want to send messages to (0 to exit)?: ')) - 1
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i = None
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while i is None:
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try:
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i = int(input('Who do you want to send messages to (0 to exit)?: ')) - 1
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except ValueError:
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pass
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if i == -1:
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break
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@ -14,7 +14,7 @@ from tl.all_tlobjects import tlobjects
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class MtProtoSender:
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"""MTProto Mobile Protocol sender (https://core.telegram.org/mtproto/description)"""
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def __init__(self, transport, session, check_updates=True):
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def __init__(self, transport, session):
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self.transport = transport
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self.session = session
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@ -24,17 +24,13 @@ class MtProtoSender:
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# Store a Lock instance to make this class safely multi-threaded
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self.lock = Lock()
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if check_updates:
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self.updates_thread = Thread(target=self.updates_thread_method, name='Updates thread')
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self.updates_thread_running = True
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self.updates_thread_receiving = False
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self.updates_thread.start()
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self.updates_thread = Thread(target=self.updates_thread_method, name='Updates thread')
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self.updates_thread_running = False
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self.updates_thread_receiving = False
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def disconnect(self):
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"""Disconnects and **stops all the running threads** if any"""
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self.updates_thread_running = False
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self.transport.cancel_receive()
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self.set_listen_for_updates(enabled=False)
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self.transport.close()
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def add_update_handler(self, handler):
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@ -54,7 +50,7 @@ class MtProtoSender:
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# region Send and receive
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def send(self, request):
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def send(self, request, resend=False):
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"""Sends the specified MTProtoRequest, previously sending any message
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which needed confirmation. This also pauses the updates thread"""
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@ -64,8 +60,9 @@ class MtProtoSender:
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if self.updates_thread_receiving:
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self.transport.cancel_receive()
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# Now only us can be using this method
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self.lock.acquire()
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# Now only us can be using this method if we're not resending
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if not resend:
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self.lock.acquire()
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# If any message needs confirmation send an AckRequest first
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if self.need_confirmation:
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@ -161,9 +158,8 @@ class MtProtoSender:
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return message, remote_msg_id, remote_sequence
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def process_msg(self, msg_id, sequence, reader, request, only_updates=False):
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"""Processes and handles a Telegram message. Optionally, this
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function will only check for updates (hence the request can be None)"""
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def process_msg(self, msg_id, sequence, reader, request=None):
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"""Processes and handles a Telegram message"""
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# TODO Check salt, session_id and sequence_number
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self.need_confirmation.append(msg_id)
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@ -171,18 +167,18 @@ class MtProtoSender:
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code = reader.read_int(signed=False)
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reader.seek(-4)
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# The following codes are "parsed manually" (and do not refer to an update)
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if not only_updates:
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if code == 0xf35c6d01: # rpc_result
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return self.handle_rpc_result(msg_id, sequence, reader, request)
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if code == 0x73f1f8dc: # msg_container
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return self.handle_container(msg_id, sequence, reader, request)
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if code == 0x3072cfa1: # gzip_packed
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return self.handle_gzip_packed(msg_id, sequence, reader, request)
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if code == 0xedab447b: # bad_server_salt
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return self.handle_bad_server_salt(msg_id, sequence, reader, request)
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if code == 0xa7eff811: # bad_msg_notification
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return self.handle_bad_msg_notification(msg_id, sequence, reader)
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# The following codes are "parsed manually"
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if code == 0xf35c6d01: # rpc_result, (response of an RPC call, i.e., we sent a request)
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return self.handle_rpc_result(msg_id, sequence, reader, request)
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if code == 0x73f1f8dc: # msg_container
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return self.handle_container(msg_id, sequence, reader, request)
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if code == 0x3072cfa1: # gzip_packed
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return self.handle_gzip_packed(msg_id, sequence, reader, request)
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if code == 0xedab447b: # bad_server_salt
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return self.handle_bad_server_salt(msg_id, sequence, reader, request)
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if code == 0xa7eff811: # bad_msg_notification
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return self.handle_bad_msg_notification(msg_id, sequence, reader)
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# If the code is not parsed manually, then it was parsed by the code generator!
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# In this case, we will simply treat the incoming TLObject as an Update,
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@ -218,7 +214,7 @@ class MtProtoSender:
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return False
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def handle_bad_server_salt(self, msg_id, sequence, reader, mtproto_request):
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def handle_bad_server_salt(self, msg_id, sequence, reader, request):
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code = reader.read_int(signed=False)
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bad_msg_id = reader.read_long(signed=False)
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bad_msg_seq_no = reader.read_int()
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@ -227,8 +223,11 @@ class MtProtoSender:
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self.session.salt = new_salt
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if request is None:
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raise ValueError('Tried to handle a bad server salt with no request specified')
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# Resend
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self.send(mtproto_request)
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self.send(request, resend=True)
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return True
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@ -241,14 +240,13 @@ class MtProtoSender:
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raise BadMessageError(error_code)
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def handle_rpc_result(self, msg_id, sequence, reader, request):
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if not request:
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raise ValueError('RPC results should only happen after a request was sent')
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code = reader.read_int(signed=False)
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request_id = reader.read_long(signed=False)
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inner_code = reader.read_int(signed=False)
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if not request:
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raise ValueError('Cannot handle RPC results if no request was specified. '
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'This should only happen when the updates thread does not work properly.')
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if request_id == request.msg_id:
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request.confirm_received = True
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@ -266,27 +264,37 @@ class MtProtoSender:
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else:
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raise error
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else:
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if inner_code == 0x3072cfa1: # GZip packed
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unpacked_data = gzip.decompress(reader.tgread_bytes())
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with BinaryReader(unpacked_data) as compressed_reader:
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request.on_response(compressed_reader)
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else:
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reader.seek(-4)
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request.on_response(reader)
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def handle_gzip_packed(self, msg_id, sequence, reader, mtproto_request):
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def handle_gzip_packed(self, msg_id, sequence, reader, request):
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code = reader.read_int(signed=False)
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packed_data = reader.tgread_bytes()
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unpacked_data = gzip.decompress(packed_data)
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with BinaryReader(unpacked_data) as compressed_reader:
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self.process_msg(msg_id, sequence, compressed_reader, mtproto_request)
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return self.process_msg(msg_id, sequence, compressed_reader, request)
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# endregion
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def set_listen_for_updates(self, enabled):
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if enabled:
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if not self.updates_thread_running:
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self.updates_thread_running = True
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self.updates_thread_receiving = False
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self.updates_thread.start()
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else:
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self.updates_thread_running = False
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if self.updates_thread_receiving:
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self.transport.cancel_receive()
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def updates_thread_method(self):
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"""This method will run until specified and listen for incoming updates"""
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while self.updates_thread_running:
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@ -297,7 +305,7 @@ class MtProtoSender:
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message, remote_msg_id, remote_sequence = self.decode_msg(body)
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with BinaryReader(message) as reader:
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self.process_msg(remote_msg_id, remote_sequence, reader, request=None, only_updates=True)
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self.process_msg(remote_msg_id, remote_sequence, reader)
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except ReadCancelledError:
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pass
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@ -10,6 +10,7 @@ from network import MtProtoSender, TcpTransport
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from parser.markdown_parser import parse_message_entities
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# For sending and receiving requests
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from tl import MTProtoRequest
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from tl import Session
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from tl.types import PeerUser, PeerChat, PeerChannel, InputPeerUser, InputPeerChat, InputPeerChannel, InputPeerEmpty
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from tl.functions import InvokeWithLayerRequest, InitConnectionRequest
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@ -62,18 +63,22 @@ class TelegramClient:
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# Now it's time to send an InitConnectionRequest
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# This must always be invoked with the layer we'll be using
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request = InvokeWithLayerRequest(layer=self.layer,
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query=InitConnectionRequest(api_id=self.api_id,
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device_model=platform.node(),
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system_version=platform.system(),
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app_version='0.2',
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lang_code='en',
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query=GetConfigRequest()))
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query = InitConnectionRequest(api_id=self.api_id,
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device_model=platform.node(),
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system_version=platform.system(),
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app_version='0.3',
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lang_code='en',
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query=GetConfigRequest())
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self.sender.send(request)
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self.sender.receive(request)
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result = self.invoke(InvokeWithLayerRequest(layer=self.layer, query=query))
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self.dc_options = request.result.dc_options
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# Only listen for updates if we're authorized
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if self.is_user_authorized():
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self.sender.set_listen_for_updates(True)
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# We're only interested in the DC options,
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# although many other options are available!
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self.dc_options = result.dc_options
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return True
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except RPCError as error:
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print('Could not stabilise initial connection: {}'.format(error))
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@ -114,11 +119,9 @@ class TelegramClient:
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completed = False
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while not completed:
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try:
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self.sender.send(request)
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self.sender.receive(request)
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result = self.invoke(request)
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self.phone_code_hashes[phone_number] = result.phone_code_hash
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completed = True
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if request.result:
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self.phone_code_hashes[phone_number] = request.result.phone_code_hash
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except InvalidDCError as error:
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self.reconnect_to_dc(error.new_dc)
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@ -137,19 +140,19 @@ class TelegramClient:
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self.session.user = request.result.user
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self.session.save()
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# Now that we're authorized, we can listen for incoming updates
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self.sender.set_listen_for_updates(True)
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return self.session.user
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def get_dialogs(self, count=10, offset_date=None, offset_id=0, offset_peer=InputPeerEmpty()):
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"""Returns a tuple of lists ([dialogs], [displays], [input_peers]) with 'count' items each"""
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request = GetDialogsRequest(offset_date=TelegramClient.get_tg_date(offset_date),
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offset_id=offset_id,
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offset_peer=offset_peer,
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limit=count)
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self.sender.send(request)
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self.sender.receive(request)
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r = self.invoke(GetDialogsRequest(offset_date=TelegramClient.get_tg_date(offset_date),
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offset_id=offset_id,
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offset_peer=offset_peer,
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limit=count))
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r = request.result
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return (r.dialogs,
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[self.find_display_name(d.peer, r.users, r.chats) for d in r.dialogs],
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[self.find_input_peer(d.peer, r.users, r.chats) for d in r.dialogs])
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@ -161,14 +164,11 @@ class TelegramClient:
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else:
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msg, entities = message, []
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request = SendMessageRequest(peer=input_peer,
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message=msg,
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random_id=utils.generate_random_long(),
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entities=entities,
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no_webpage=no_web_page)
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self.sender.send(request)
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self.sender.receive(request)
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self.invoke(SendMessageRequest(peer=input_peer,
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message=msg,
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random_id=utils.generate_random_long(),
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entities=entities,
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no_webpage=no_web_page))
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def get_message_history(self, input_peer, limit=20,
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offset_date=None, offset_id=0, max_id=0, min_id=0, add_offset=0):
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@ -186,23 +186,19 @@ class TelegramClient:
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:return: A tuple containing total message count and two more lists ([messages], [senders]).
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Note that the sender can be null if it was not found!
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"""
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request = GetHistoryRequest(input_peer,
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limit=limit,
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offset_date=self.get_tg_date(offset_date),
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offset_id=offset_id,
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max_id=max_id,
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min_id=min_id,
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add_offset=add_offset)
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result = self.invoke(GetHistoryRequest(input_peer,
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limit=limit,
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offset_date=self.get_tg_date(offset_date),
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offset_id=offset_id,
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max_id=max_id,
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min_id=min_id,
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add_offset=add_offset))
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self.sender.send(request)
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self.sender.receive(request)
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result = request.result
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# The result may be a messages slice (not all messages were retrieved) or
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# simply a messages TLObject. In the later case, no "count" attribute is specified:
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# the total messages count is retrieved by counting all the retrieved messages
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total_messages = getattr(result, 'count', len(result.messages))
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return (total_messages,
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result.messages,
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[usr # Create a list with the users...
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@ -210,6 +206,16 @@ class TelegramClient:
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for msg in result.messages # ...from all the messages...
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for usr in result.users]) # ...from all of the available users
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def invoke(self, request):
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"""Invokes an MTProtoRequest and returns its results"""
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if not issubclass(type(request), MTProtoRequest):
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raise ValueError('You can only invoke MtProtoRequests')
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self.sender.send(request)
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self.sender.receive(request)
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return request.result
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# endregion
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# region Utilities
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