AP config

scripts/apconfig.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+# encoding: utf-8
+"""
+apconfig.py
+Created by kueblc on 2021-07-20.
+Configure Tuya devices via AP config without the Tuya cloud or app
+"""
+
+# Defaults
+BIND_ADDRESS = '0.0.0.0'
+SSID = 'vtrust-flash'
+MULTICAST_TTL = 1
+
+from binascii import crc32
+
+import json
+jsonstr = lambda j : json.dumps(j, separators=(',', ':'))
+
+int_to_bytes = lambda i : i.to_bytes(4, byteorder='big')
+
+FRAME_PREFIX = b'\x00\x00\x55\xaa'
+FRAME_SUFFIX = b'\x00\x00\xaa\x55'
+COMMAND_AP_CONFIG = 1
+
+from socket import *
+
+class ApConfigSocket(object):
+	def __init__ (self, address = BIND_ADDRESS):
+		self._socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)
+		self._socket.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
+		self._socket.setsockopt(SOL_SOCKET, SO_BROADCAST, 1)
+		self._socket.setsockopt(IPPROTO_IP, IP_MULTICAST_TTL, MULTICAST_TTL)
+		self._socket.bind((address, 0))
+
+	def send (self, data):
+		self._socket.sendto(data, ('255.255.255.255', 6669))
+
+def encode_tuya_frame (command, payload, sequence = 0):
+	message = FRAME_PREFIX + \
+		int_to_bytes(sequence) + \
+		int_to_bytes(command) + \
+		int_to_bytes(len(payload) + 8) + \
+		payload
+	return message + int_to_bytes(crc32(message)) + FRAME_SUFFIX
+
+def ap_config (ssid, passwd = "", token = "00000000"):
+	payload = jsonstr({
+		"ssid": ssid,
+		"passwd": passwd,
+		"token": token
+	}).encode()
+	return encode_tuya_frame(COMMAND_AP_CONFIG, payload)
+
+def send_ap_config ():
+	packet = ap_config(SSID)
+	print("Sending " + packet.hex())
+	sock = ApConfigSocket()
+	sock.send(packet)
+
+send_ap_config()
+