79 lines
2.4 KiB
Python
79 lines
2.4 KiB
Python
# Pyrogram - Telegram MTProto API Client Library for Python
|
|
# Copyright (C) 2017-2020 Dan <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 logging
|
|
import os
|
|
from struct import pack, unpack
|
|
|
|
from .tcp import TCP
|
|
from ....crypto.aes import AES
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class TCPIntermediateO(TCP):
|
|
RESERVED = (b"HEAD", b"POST", b"GET ", b"OPTI", b"\xee" * 4)
|
|
|
|
def __init__(self, ipv6: bool, proxy: dict):
|
|
super().__init__(ipv6, proxy)
|
|
|
|
self.encrypt = None
|
|
self.decrypt = None
|
|
|
|
async def connect(self, address: tuple):
|
|
await super().connect(address)
|
|
|
|
while True:
|
|
nonce = bytearray(os.urandom(64))
|
|
|
|
if nonce[0] != b"\xef" and nonce[:4] not in self.RESERVED and nonce[4:4] != b"\x00" * 4:
|
|
nonce[56] = nonce[57] = nonce[58] = nonce[59] = 0xee
|
|
break
|
|
|
|
temp = bytearray(nonce[55:7:-1])
|
|
|
|
self.encrypt = (nonce[8:40], nonce[40:56], bytearray(1))
|
|
self.decrypt = (temp[0:32], temp[32:48], bytearray(1))
|
|
|
|
nonce[56:64] = AES.ctr256_encrypt(nonce, *self.encrypt)[56:64]
|
|
|
|
await super().send(nonce)
|
|
|
|
async def send(self, data: bytes, *args):
|
|
await super().send(
|
|
AES.ctr256_encrypt(
|
|
pack("<i", len(data)) + data,
|
|
*self.encrypt
|
|
)
|
|
)
|
|
|
|
async def recv(self, length: int = 0) -> bytes or None:
|
|
length = await super().recv(4)
|
|
|
|
if length is None:
|
|
return None
|
|
|
|
length = AES.ctr256_decrypt(length, *self.decrypt)
|
|
|
|
data = await super().recv(unpack("<i", length)[0])
|
|
|
|
if data is None:
|
|
return None
|
|
|
|
return AES.ctr256_decrypt(data, *self.decrypt)
|