926 lines
26 KiB
Python
926 lines
26 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2019 Richard Mitchell
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Based on portions of https://github.com/codetheweb/tuyapi/
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#
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# MIT License
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#
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# Copyright (c) 2017 Max Isom
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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import asyncio
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import base64
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import json
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import logging
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import socket
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import struct
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import sys
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import time
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import traceback
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from typing import Callable, Coroutine
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from cryptography.hazmat.backends.openssl import backend as openssl_backend
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from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
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from cryptography.hazmat.primitives.hashes import Hash, MD5
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from cryptography.hazmat.primitives.padding import PKCS7
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INITIAL_BACKOFF = 5
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INITIAL_QUEUE_TIME = 0.1
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BACKOFF_MULTIPLIER = 1.70224
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_LOGGER = logging.getLogger(__name__)
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MESSAGE_PREFIX_FORMAT = ">IIII"
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MESSAGE_SUFFIX_FORMAT = ">II"
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MAGIC_PREFIX = 0x000055AA
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MAGIC_SUFFIX = 0x0000AA55
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MAGIC_SUFFIX_BYTES = struct.pack(">I", MAGIC_SUFFIX)
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CRC_32_TABLE = [
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0x00000000,
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0x77073096,
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0xEE0E612C,
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0x990951BA,
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0x076DC419,
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0x706AF48F,
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0xE963A535,
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0x9E6495A3,
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0x0EDB8832,
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0x79DCB8A4,
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0xE0D5E91E,
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0x97D2D988,
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0x09B64C2B,
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0x7EB17CBD,
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0xE7B82D07,
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0x90BF1D91,
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0x1DB71064,
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0x6AB020F2,
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0xF3B97148,
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0x84BE41DE,
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0x1ADAD47D,
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0x6DDDE4EB,
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0xF4D4B551,
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0x83D385C7,
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0x136C9856,
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0x646BA8C0,
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0xFD62F97A,
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0x8A65C9EC,
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0x14015C4F,
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0x63066CD9,
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0xFA0F3D63,
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0x8D080DF5,
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0x3B6E20C8,
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0x4C69105E,
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0xD56041E4,
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0xA2677172,
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0x3C03E4D1,
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0x4B04D447,
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0xD20D85FD,
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0xA50AB56B,
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0x35B5A8FA,
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0x42B2986C,
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0xDBBBC9D6,
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0xACBCF940,
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0x32D86CE3,
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0x45DF5C75,
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0xDCD60DCF,
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0xABD13D59,
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0x26D930AC,
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0x51DE003A,
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0xC8D75180,
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0xBFD06116,
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0x21B4F4B5,
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0x56B3C423,
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0xCFBA9599,
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0xB8BDA50F,
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0x2802B89E,
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0x5F058808,
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0xC60CD9B2,
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0xB10BE924,
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0x2F6F7C87,
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0x58684C11,
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0xC1611DAB,
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0xB6662D3D,
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0x76DC4190,
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0x01DB7106,
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0x98D220BC,
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0xEFD5102A,
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0x71B18589,
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0x06B6B51F,
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0x9FBFE4A5,
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0xE8B8D433,
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0x7807C9A2,
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0x0F00F934,
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0x9609A88E,
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0xE10E9818,
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0x7F6A0DBB,
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0x086D3D2D,
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0x91646C97,
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0xE6635C01,
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0x6B6B51F4,
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0x1C6C6162,
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0x856530D8,
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0xF262004E,
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0x6C0695ED,
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0x1B01A57B,
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0x8208F4C1,
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0xF50FC457,
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0x65B0D9C6,
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0x12B7E950,
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0x8BBEB8EA,
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0xFCB9887C,
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0x62DD1DDF,
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0x15DA2D49,
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0x8CD37CF3,
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0xFBD44C65,
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0x4DB26158,
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0x3AB551CE,
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0xA3BC0074,
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0xD4BB30E2,
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0x4ADFA541,
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0x3DD895D7,
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0xA4D1C46D,
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0xD3D6F4FB,
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0x4369E96A,
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0x346ED9FC,
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0xAD678846,
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0xDA60B8D0,
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0x44042D73,
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0x33031DE5,
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0xAA0A4C5F,
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0xDD0D7CC9,
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0x5005713C,
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0x270241AA,
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0xBE0B1010,
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0xC90C2086,
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0x5768B525,
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0x206F85B3,
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0xB966D409,
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0xCE61E49F,
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0x5EDEF90E,
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0x29D9C998,
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0xB0D09822,
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0xC7D7A8B4,
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0x59B33D17,
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0x2EB40D81,
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0xB7BD5C3B,
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0xC0BA6CAD,
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0xEDB88320,
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0x9ABFB3B6,
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0x03B6E20C,
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0x74B1D29A,
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0xEAD54739,
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0x9DD277AF,
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0x04DB2615,
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0x73DC1683,
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0xE3630B12,
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0x94643B84,
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0x0D6D6A3E,
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0x7A6A5AA8,
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0xE40ECF0B,
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0x9309FF9D,
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0x0A00AE27,
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0x7D079EB1,
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0xF00F9344,
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0x8708A3D2,
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0x1E01F268,
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0x6906C2FE,
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0xF762575D,
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0x806567CB,
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0x196C3671,
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0x6E6B06E7,
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0xFED41B76,
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0x89D32BE0,
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0x10DA7A5A,
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0x67DD4ACC,
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0xF9B9DF6F,
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0x8EBEEFF9,
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0x17B7BE43,
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0x60B08ED5,
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0xD6D6A3E8,
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0xA1D1937E,
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0x38D8C2C4,
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0x4FDFF252,
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0xD1BB67F1,
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0xA6BC5767,
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0x3FB506DD,
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0x48B2364B,
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0xD80D2BDA,
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0xAF0A1B4C,
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0x36034AF6,
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0x41047A60,
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0xDF60EFC3,
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0xA867DF55,
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0x316E8EEF,
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0x4669BE79,
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0xCB61B38C,
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0xBC66831A,
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0x256FD2A0,
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0x5268E236,
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0xCC0C7795,
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0xBB0B4703,
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0x220216B9,
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0x5505262F,
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0xC5BA3BBE,
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0xB2BD0B28,
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0x2BB45A92,
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0x5CB36A04,
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0xC2D7FFA7,
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0xB5D0CF31,
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0x2CD99E8B,
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0x5BDEAE1D,
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0x9B64C2B0,
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0xEC63F226,
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0x756AA39C,
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0x026D930A,
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0x9C0906A9,
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0xEB0E363F,
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0x72076785,
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0x05005713,
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0x95BF4A82,
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0xE2B87A14,
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0x7BB12BAE,
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0x0CB61B38,
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0x92D28E9B,
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0xE5D5BE0D,
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0x7CDCEFB7,
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0x0BDBDF21,
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0x86D3D2D4,
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0xF1D4E242,
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0x68DDB3F8,
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0x1FDA836E,
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0x81BE16CD,
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0xF6B9265B,
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0x6FB077E1,
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0x18B74777,
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0x88085AE6,
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0xFF0F6A70,
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0x66063BCA,
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0x11010B5C,
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0x8F659EFF,
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0xF862AE69,
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0x616BFFD3,
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0x166CCF45,
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0xA00AE278,
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0xD70DD2EE,
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0x4E048354,
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0x3903B3C2,
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0xA7672661,
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0xD06016F7,
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0x4969474D,
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0x3E6E77DB,
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0xAED16A4A,
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0xD9D65ADC,
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0x40DF0B66,
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0x37D83BF0,
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0xA9BCAE53,
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0xDEBB9EC5,
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0x47B2CF7F,
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0x30B5FFE9,
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0xBDBDF21C,
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0xCABAC28A,
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0x53B39330,
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0x24B4A3A6,
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0xBAD03605,
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0xCDD70693,
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0x54DE5729,
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0x23D967BF,
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0xB3667A2E,
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0xC4614AB8,
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0x5D681B02,
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0x2A6F2B94,
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0xB40BBE37,
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0xC30C8EA1,
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0x5A05DF1B,
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0x2D02EF8D,
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]
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class TuyaException(Exception):
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"""Base for Tuya exceptions."""
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class InvalidKey(TuyaException):
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"""The local key is invalid."""
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class InvalidMessage(TuyaException):
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"""The message received is invalid."""
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class MessageDecodeFailed(TuyaException):
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"""The message received cannot be decoded as JSON."""
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class ConnectionException(TuyaException):
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"""The socket connection failed."""
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class ConnectionTimeoutException(ConnectionException):
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"""The socket connection timed out."""
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class RequestResponseCommandMismatch(TuyaException):
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"""The command in the response didn't match the one from the request."""
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class ResponseTimeoutException(TuyaException):
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"""Did not recieve a response to the request within the timeout"""
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class BackoffException(TuyaException):
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"""Backoff time not reached"""
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class TuyaCipher:
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"""Tuya cryptographic helpers."""
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def __init__(self, key, version):
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"""Initialize the cipher."""
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self.version = version
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self.key = key
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self.cipher = Cipher(
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algorithms.AES(key.encode("ascii")), modes.ECB(), backend=openssl_backend
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)
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def get_prefix_size_and_validate(self, command, encrypted_data):
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try:
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version = tuple(map(int, encrypted_data[:3].decode("utf8").split(".")))
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except ValueError:
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version = (0, 0)
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if version != self.version:
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return 0
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if version < (3, 3):
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hash = encrypted_data[3:19].decode("ascii")
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expected_hash = self.hash(encrypted_data[19:])
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if hash != expected_hash:
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return 0
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return 19
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else:
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if command in (Message.SET_COMMAND, Message.GRATUITOUS_UPDATE):
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_, sequence, __, ___ = struct.unpack_from(">IIIH", encrypted_data, 3)
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return 15
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return 0
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def decrypt(self, command, data):
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prefix_size = self.get_prefix_size_and_validate(command, data)
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data = data[prefix_size:]
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decryptor = self.cipher.decryptor()
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if self.version < (3, 3):
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data = base64.b64decode(data)
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decrypted_data = decryptor.update(data)
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decrypted_data += decryptor.finalize()
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unpadder = PKCS7(128).unpadder()
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unpadded_data = unpadder.update(decrypted_data)
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unpadded_data += unpadder.finalize()
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return unpadded_data
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def encrypt(self, command, data):
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encrypted_data = b""
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if data:
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padder = PKCS7(128).padder()
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padded_data = padder.update(data)
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padded_data += padder.finalize()
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encryptor = self.cipher.encryptor()
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encrypted_data = encryptor.update(padded_data)
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encrypted_data += encryptor.finalize()
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prefix = ".".join(map(str, self.version)).encode("utf8")
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if self.version < (3, 3):
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payload = base64.b64encode(encrypted_data)
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hash = self.hash(payload)
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prefix += hash.encode("utf8")
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else:
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payload = encrypted_data
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if command in (Message.SET_COMMAND, Message.GRATUITOUS_UPDATE):
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prefix += b"\x00" * 12
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else:
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prefix = b""
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return prefix + payload
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def hash(self, data):
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digest = Hash(MD5(), backend=openssl_backend)
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to_hash = "data={}||lpv={}||{}".format(
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data.decode("ascii"), ".".join(map(str, self.version)), self.key
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)
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digest.update(to_hash.encode("utf8"))
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intermediate = digest.finalize().hex()
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return intermediate[8:24]
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def crc(data):
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"""Calculate the Tuya-flavored CRC of some data."""
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c = 0xFFFFFFFF
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for b in data:
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c = (c >> 8) ^ CRC_32_TABLE[(c ^ b) & 255]
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return c ^ 0xFFFFFFFF
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class Message:
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PING_COMMAND = 0x09
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GET_COMMAND = 0x0A
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SET_COMMAND = 0x07
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GRATUITOUS_UPDATE = 0x08
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|
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def __init__(
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self,
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command,
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payload=None,
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sequence=None,
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encrypt=False,
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device=None,
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expect_response=True,
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ttl=5,
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):
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if payload is None:
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payload = b""
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self.payload = payload
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self.command = command
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self.original_sequence = sequence
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if sequence is None:
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self.set_sequence()
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else:
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self.sequence = sequence
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self.encrypt = encrypt
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self.device = device
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self.expiry = int(time.time()) + ttl
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self.expect_response = expect_response
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self.listener = None
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if expect_response is True:
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self.listener = asyncio.Semaphore(0)
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if device is not None:
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device._listeners[self.sequence] = self.listener
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|
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def __repr__(self):
|
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return "{}({}, {!r}, {!r}, {})".format(
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self.__class__.__name__,
|
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hex(self.command),
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self.payload,
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self.sequence,
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"<Device {}>".format(self.device) if self.device else None,
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)
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def set_sequence(self):
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self.sequence = int(time.perf_counter() * 1000) & 0xFFFFFFFF
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def hex(self):
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return self.bytes().hex()
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def bytes(self):
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payload_data = self.payload
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if isinstance(payload_data, dict):
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payload_data = json.dumps(payload_data, separators=(",", ":"))
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if not isinstance(payload_data, bytes):
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payload_data = payload_data.encode("utf8")
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if self.encrypt:
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payload_data = self.device.cipher.encrypt(self.command, payload_data)
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|
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payload_size = len(payload_data) + struct.calcsize(MESSAGE_SUFFIX_FORMAT)
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|
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header = struct.pack(
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MESSAGE_PREFIX_FORMAT,
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MAGIC_PREFIX,
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self.sequence,
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self.command,
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payload_size,
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)
|
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if self.device and self.device.version >= (3, 3):
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checksum = crc(header + payload_data)
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else:
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checksum = crc(payload_data)
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footer = struct.pack(MESSAGE_SUFFIX_FORMAT, checksum, MAGIC_SUFFIX)
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return header + payload_data + footer
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|
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__bytes__ = bytes
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|
|
|
async def async_send(self):
|
|
await self.device._async_send(self)
|
|
|
|
@classmethod
|
|
def from_bytes(cls, device, data, cipher=None):
|
|
try:
|
|
prefix, sequence, command, payload_size = struct.unpack_from(
|
|
MESSAGE_PREFIX_FORMAT, data
|
|
)
|
|
except struct.error as e:
|
|
raise InvalidMessage("Invalid message header format.") from e
|
|
if prefix != MAGIC_PREFIX:
|
|
raise InvalidMessage("Magic prefix missing from message.")
|
|
|
|
# check for an optional return code
|
|
header_size = struct.calcsize(MESSAGE_PREFIX_FORMAT)
|
|
try:
|
|
(return_code,) = struct.unpack_from(">I", data, header_size)
|
|
except struct.error as e:
|
|
raise InvalidMessage("Unable to unpack return code.") from e
|
|
if return_code >> 8:
|
|
payload_data = data[
|
|
header_size : header_size
|
|
+ payload_size
|
|
- struct.calcsize(MESSAGE_SUFFIX_FORMAT)
|
|
]
|
|
return_code = None
|
|
else:
|
|
payload_data = data[
|
|
header_size
|
|
+ struct.calcsize(">I") : header_size
|
|
+ payload_size
|
|
- struct.calcsize(MESSAGE_SUFFIX_FORMAT)
|
|
]
|
|
|
|
try:
|
|
expected_crc, suffix = struct.unpack_from(
|
|
MESSAGE_SUFFIX_FORMAT,
|
|
data,
|
|
header_size + payload_size - struct.calcsize(MESSAGE_SUFFIX_FORMAT),
|
|
)
|
|
except struct.error as e:
|
|
raise InvalidMessage("Invalid message suffix format.") from e
|
|
if suffix != MAGIC_SUFFIX:
|
|
raise InvalidMessage("Magic suffix missing from message")
|
|
|
|
actual_crc = crc(
|
|
data[: header_size + payload_size - struct.calcsize(MESSAGE_SUFFIX_FORMAT)]
|
|
)
|
|
if expected_crc != actual_crc:
|
|
raise InvalidMessage("CRC check failed")
|
|
|
|
payload = None
|
|
if payload_data:
|
|
try:
|
|
payload_data = cipher.decrypt(command, payload_data)
|
|
except ValueError as e:
|
|
pass
|
|
try:
|
|
payload_text = payload_data.decode("utf8")
|
|
except UnicodeDecodeError as e:
|
|
device._LOGGER.debug(payload_data.hex())
|
|
device._LOGGER.error(e)
|
|
raise MessageDecodeFailed() from e
|
|
try:
|
|
payload = json.loads(payload_text)
|
|
except json.decoder.JSONDecodeError as e:
|
|
# data may be encrypted
|
|
device._LOGGER.debug(payload_data.hex())
|
|
device._LOGGER.error(e)
|
|
raise MessageDecodeFailed() from e
|
|
|
|
return cls(command, payload, sequence)
|
|
|
|
|
|
class TuyaDevice:
|
|
"""Represents a generic Tuya device."""
|
|
|
|
def __init__(
|
|
self,
|
|
device_id,
|
|
host,
|
|
timeout,
|
|
ping_interval,
|
|
update_entity_state,
|
|
local_key=None,
|
|
port=6668,
|
|
gateway_id=None,
|
|
version=(3, 3),
|
|
):
|
|
"""Initialize the device."""
|
|
self._LOGGER = _LOGGER.getChild(device_id)
|
|
self.device_id = device_id
|
|
self.host = host
|
|
self.port = port
|
|
if not gateway_id:
|
|
gateway_id = self.device_id
|
|
self.gateway_id = gateway_id
|
|
self.version = version
|
|
self.timeout = timeout
|
|
self.last_pong = 0
|
|
self.ping_interval = ping_interval
|
|
self.update_entity_state_cb = update_entity_state
|
|
|
|
if len(local_key) != 16:
|
|
raise InvalidKey("Local key should be a 16-character string")
|
|
|
|
self.cipher = TuyaCipher(local_key, self.version)
|
|
self.writer = None
|
|
self._response_task = None
|
|
self._recieve_task = None
|
|
self._ping_task = None
|
|
self._handlers: dict[int, Callable[[Message], Coroutine]] = {
|
|
Message.GRATUITOUS_UPDATE: self.async_gratuitous_update_state,
|
|
Message.PING_COMMAND: self._async_pong_received,
|
|
}
|
|
self._dps = {}
|
|
self._connected = False
|
|
self._enabled = True
|
|
self._queue = []
|
|
self._listeners = {}
|
|
self._backoff = False
|
|
self._queue_interval = INITIAL_QUEUE_TIME
|
|
self._failures = 0
|
|
|
|
asyncio.create_task(self.process_queue())
|
|
|
|
def __repr__(self):
|
|
return "{}({!r}, {!r}, {!r}, {!r})".format(
|
|
self.__class__.__name__,
|
|
self.device_id,
|
|
self.host,
|
|
self.port,
|
|
self.cipher.key,
|
|
)
|
|
|
|
def __str__(self):
|
|
return "{} ({}:{})".format(self.device_id, self.host, self.port)
|
|
|
|
async def process_queue(self):
|
|
if self._enabled is False:
|
|
return
|
|
|
|
self.clean_queue()
|
|
|
|
if len(self._queue) > 0:
|
|
self._LOGGER.debug(
|
|
"Processing queue. Current length: {}".format(len(self._queue))
|
|
)
|
|
try:
|
|
message = self._queue.pop(0)
|
|
await message.async_send()
|
|
self._failures = 0
|
|
self._queue_interval = INITIAL_QUEUE_TIME
|
|
self._backoff = False
|
|
except Exception as e:
|
|
self._failures += 1
|
|
self._LOGGER.debug(
|
|
"{} failures. Most recent: {}".format(self._failures, e)
|
|
)
|
|
if self._failures > 3:
|
|
self._backoff = True
|
|
self._queue_interval = min(
|
|
INITIAL_BACKOFF * (BACKOFF_MULTIPLIER ** (self._failures - 4)),
|
|
600,
|
|
)
|
|
self._LOGGER.warn(
|
|
"{} failures, backing off for {} seconds".format(
|
|
self._failures, self._queue_interval
|
|
)
|
|
)
|
|
|
|
await asyncio.sleep(self._queue_interval)
|
|
asyncio.create_task(self.process_queue())
|
|
|
|
def clean_queue(self):
|
|
cleaned_queue = []
|
|
now = int(time.time())
|
|
for item in self._queue:
|
|
if item.expiry > now:
|
|
cleaned_queue.append(item)
|
|
self._queue = cleaned_queue
|
|
|
|
async def async_connect(self):
|
|
if self._connected is True or self._enabled is False:
|
|
return
|
|
|
|
sock = socket.socket(family=socket.AF_INET, type=socket.SOCK_STREAM)
|
|
sock.settimeout(self.timeout)
|
|
self._LOGGER.debug("Connecting to {}".format(self))
|
|
try:
|
|
sock.connect((self.host, self.port))
|
|
except (socket.timeout, TimeoutError) as e:
|
|
self._dps["106"] = "CONNECTION_FAILED"
|
|
raise ConnectionTimeoutException("Connection timed out")
|
|
loop = asyncio.get_running_loop()
|
|
loop.create_connection
|
|
self.reader, self.writer = await asyncio.open_connection(sock=sock)
|
|
self._connected = True
|
|
|
|
if self._ping_task is None:
|
|
self._ping_task = asyncio.create_task(self.async_ping(self.ping_interval))
|
|
|
|
asyncio.create_task(self._async_handle_message())
|
|
|
|
async def async_disable(self):
|
|
self._enabled = False
|
|
|
|
await self.async_disconnect()
|
|
|
|
async def async_disconnect(self):
|
|
if self._connected is False:
|
|
return
|
|
|
|
self._LOGGER.debug("Disconnected from {}".format(self))
|
|
self._connected = False
|
|
self.last_pong = 0
|
|
|
|
if self.writer is not None:
|
|
self.writer.close()
|
|
|
|
if self.reader is not None and not self.reader.at_eof():
|
|
self.reader.feed_eof()
|
|
|
|
async def async_get(self):
|
|
payload = {"gwId": self.gateway_id, "devId": self.device_id}
|
|
encrypt = False if self.version < (3, 3) else True
|
|
message = Message(Message.GET_COMMAND, payload, encrypt=encrypt, device=self)
|
|
self._queue.append(message)
|
|
response = await self.async_recieve(message)
|
|
asyncio.create_task(self.async_update_state(response))
|
|
|
|
async def async_set(self, dps):
|
|
t = int(time.time())
|
|
payload = {"devId": self.device_id, "uid": "", "t": t, "dps": dps}
|
|
message = Message(
|
|
Message.SET_COMMAND,
|
|
payload,
|
|
encrypt=True,
|
|
device=self,
|
|
expect_response=False,
|
|
)
|
|
self._queue.append(message)
|
|
|
|
async def async_ping(self, ping_interval):
|
|
if self._enabled is False:
|
|
return
|
|
|
|
if self._backoff is True:
|
|
self._LOGGER.debug("Currently in backoff, not adding ping to queue")
|
|
else:
|
|
self.last_ping = time.time()
|
|
encrypt = False if self.version < (3, 3) else True
|
|
message = Message(
|
|
Message.PING_COMMAND,
|
|
sequence=0,
|
|
encrypt=encrypt,
|
|
device=self,
|
|
expect_response=False,
|
|
)
|
|
self._queue.append(message)
|
|
|
|
await asyncio.sleep(ping_interval)
|
|
self._ping_task = asyncio.create_task(self.async_ping(self.ping_interval))
|
|
if self.last_pong < self.last_ping:
|
|
await self.async_disconnect()
|
|
|
|
async def _async_pong_received(self, message):
|
|
self.last_pong = time.time()
|
|
|
|
async def async_gratuitous_update_state(self, state_message):
|
|
await self.async_update_state(state_message)
|
|
await self.update_entity_state_cb()
|
|
|
|
async def async_update_state(self, state_message, _=None):
|
|
if (
|
|
state_message is not None
|
|
and state_message.payload
|
|
and state_message.payload["dps"]
|
|
):
|
|
self._dps.update(state_message.payload["dps"])
|
|
self._LOGGER.debug("Received updated state {}: {}".format(self, self._dps))
|
|
|
|
@property
|
|
def state(self):
|
|
return dict(self._dps)
|
|
|
|
@state.setter
|
|
def state_setter(self, new_values):
|
|
asyncio.create_task(self.async_set(new_values))
|
|
|
|
async def _async_handle_message(self):
|
|
if self._enabled is False or self._connected is False:
|
|
return
|
|
|
|
try:
|
|
self._response_task = asyncio.create_task(
|
|
self.reader.readuntil(MAGIC_SUFFIX_BYTES)
|
|
)
|
|
await self._response_task
|
|
response_data = self._response_task.result()
|
|
message = Message.from_bytes(self, response_data, self.cipher)
|
|
except Exception as e:
|
|
if isinstance(e, InvalidMessage):
|
|
self._LOGGER.debug("Invalid message from {}: {}".format(self, e))
|
|
elif isinstance(e, MessageDecodeFailed):
|
|
self._LOGGER.debug("Failed to decrypt message from {}".format(self))
|
|
elif isinstance(e, asyncio.IncompleteReadError):
|
|
if self._connected:
|
|
self._LOGGER.debug("Incomplete read")
|
|
elif isinstance(e, ConnectionResetError):
|
|
self._LOGGER.debug(
|
|
"Connection reset: {}\n{}".format(e, traceback.format_exc())
|
|
)
|
|
await self.async_disconnect()
|
|
|
|
else:
|
|
self._LOGGER.debug("Received message from {}: {}".format(self, message))
|
|
if message.sequence in self._listeners:
|
|
sem = self._listeners[message.sequence]
|
|
if isinstance(sem, asyncio.Semaphore):
|
|
self._listeners[message.sequence] = message
|
|
sem.release()
|
|
else:
|
|
handler = self._handlers.get(message.command, None)
|
|
if handler is not None:
|
|
asyncio.create_task(handler(message))
|
|
|
|
self._response_task = None
|
|
asyncio.create_task(self._async_handle_message())
|
|
|
|
async def _async_send(self, message, retries=2):
|
|
self._LOGGER.debug("Sending to {}: {}".format(self, message))
|
|
try:
|
|
await self.async_connect()
|
|
self.writer.write(message.bytes())
|
|
await self.writer.drain()
|
|
except Exception as e:
|
|
if retries == 0:
|
|
if isinstance(e, socket.error):
|
|
await self.async_disconnect()
|
|
|
|
raise ConnectionException(
|
|
"Connection to {} failed: {}".format(self, e)
|
|
)
|
|
elif isinstance(e, asyncio.IncompleteReadError):
|
|
raise InvalidMessage(
|
|
"Incomplete read from: {} : {}".format(self, e)
|
|
)
|
|
else:
|
|
raise TuyaException("Failed to send data to {}".format(self))
|
|
|
|
if isinstance(e, socket.error):
|
|
self._LOGGER.debug(
|
|
"Retrying send due to error. Connection to {} failed: {}".format(
|
|
self, e
|
|
)
|
|
)
|
|
elif isinstance(e, asyncio.IncompleteReadError):
|
|
self._LOGGER.debug(
|
|
"Retrying send due to error. Incomplete read from: {} : {}. Partial data recieved: {}".format(
|
|
self, e, e.partial
|
|
)
|
|
)
|
|
else:
|
|
self._LOGGER.debug(
|
|
"Retrying send due to error. Failed to send data to {}".format(self)
|
|
)
|
|
await asyncio.sleep(0.25)
|
|
await self._async_send(message, retries=retries - 1)
|
|
|
|
async def async_recieve(self, message):
|
|
if self._connected is False:
|
|
return
|
|
|
|
if message.expect_response is True:
|
|
try:
|
|
self._recieve_task = asyncio.create_task(
|
|
asyncio.wait_for(message.listener.acquire(), timeout=self.timeout)
|
|
)
|
|
await self._recieve_task
|
|
response = self._listeners.pop(message.sequence)
|
|
|
|
if isinstance(response, Exception):
|
|
raise response
|
|
|
|
return response
|
|
except Exception as e:
|
|
del self._listeners[message.sequence]
|
|
await self.async_disconnect()
|
|
|
|
if isinstance(e, TimeoutError):
|
|
raise ResponseTimeoutException(
|
|
"Timed out waiting for response to sequence number {}".format(
|
|
message.sequence
|
|
)
|
|
)
|
|
|
|
raise e
|