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47 lines
1.7 KiB
Python
Executable File
47 lines
1.7 KiB
Python
Executable File
# This file is based on TLSharp
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# https://github.com/sochix/TLSharp/blob/master/TLSharp.Core/Network/MtProtoPlainSender.cs
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import time
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from utils import BinaryWriter, BinaryReader
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class MtProtoPlainSender:
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"""MTProto Mobile Protocol plain sender (https://core.telegram.org/mtproto/description#unencrypted-messages)"""
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def __init__(self, transport):
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self._sequence = 0
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self._time_offset = 0
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self._last_msg_id = 0
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self._transport = transport
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def send(self, data):
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"""Sends a plain packet (auth_key_id = 0) containing the given message body (data)"""
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with BinaryWriter() as writer:
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writer.write_long(0)
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writer.write_long(self.get_new_msg_id())
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writer.write_int(len(data))
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writer.write(data)
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packet = writer.get_bytes()
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self._transport.send(packet)
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def receive(self):
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"""Receives a plain packet, returning the body of the response"""
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result = self._transport.receive()
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with BinaryReader(result.body) as reader:
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auth_key_id = reader.read_long()
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msg_id = reader.read_long()
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message_length = reader.read_int()
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response = reader.read(message_length)
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return response
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def get_new_msg_id(self):
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"""Generates a new message ID based on the current time (in ms) since epoch"""
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new_msg_id = int(self._time_offset + time.time() * 1000) # Multiply by 1000 to get milliseconds
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# Ensure that we always return a message ID which is higher than the previous one
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if self._last_msg_id >= new_msg_id:
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new_msg_id = self._last_msg_id + 4
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self._last_msg_id = new_msg_id
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return new_msg_id
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