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scanner.py
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scanner.py
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# -*- coding: UTF-8 -*-
import asyncio
from ipaddress import IPv4Network
import ifaddr
import logging
import socket
from threading import Lock
from msmart.cloud import cloud
from msmart.const import BROADCAST_MSG, DEVICE_INFO_MSG, OPEN_MIDEA_APP_ACCOUNT, OPEN_MIDEA_APP_PASSWORD
from msmart.device import air_conditioning_device as ac
from msmart.security import get_udpid, security
try:
import xml.etree.cElementTree as ET
except ImportError:
import xml.etree.ElementTree as ET
VERSION = '0.2.2'
_LOGGER = logging.getLogger(__name__)
Client = None
_security = security()
_lock = Lock()
class scandevice:
def __init__(self):
self.type = 'unknown'
self.support = False
self.version = 0
self.ip = None
self.id = None
self.port = None
self.token = None
self.key = None
self.ssid = None
def __str__(self):
return str(self.__dict__)
async def support_test(self, account=OPEN_MIDEA_APP_ACCOUNT, password=OPEN_MIDEA_APP_PASSWORD):
if self.version == 3:
_device = await self.support_testv3(account, password)
else:
_device = ac(self.ip, self.id, self.port)
if self.type == 'ac':
loop = asyncio.get_event_loop()
await loop.run_in_executor(None, _device.refresh)
_LOGGER.debug("{}".format(_device))
self.support = _device.support
_LOGGER.debug("*** Found a device: \033[94m\033[1m{} \033[0m".format(self))
return self
async def support_testv3(self, account, password):
_device = ac(self.ip, self.id, self.port)
for udpid in [get_udpid(self.id.to_bytes(6, 'little')), get_udpid(self.id.to_bytes(6, 'big'))]:
loop = asyncio.get_event_loop()
token, key = await loop.run_in_executor(None, gettoken, udpid, account, password)
auth = await loop.run_in_executor(None, _device.authenticate, key, token)
if auth:
self.token, self.key = token, key
return _device
return _device
@staticmethod
async def load(ip, data):
if data is None:
return None
if len(data) >= 104 and (data[:2].hex() == '5a5a' or data[8:10].hex() == '5a5a'):
return scandeviceV2V3(data)
if data[:6].hex() == '3c3f786d6c20':
return scandeviceV1(ip, data)
class scandeviceV2V3(scandevice):
def __init__(self, data):
super().__init__()
self.insert(data)
def insert(self, data):
if data[:2].hex() == '5a5a':
self.version = 2
if data[:2].hex() == '8370':
self.version = 3
if data[8:10].hex() == '5a5a':
data = data[8:-16]
self.id = int.from_bytes(data[20:26], 'little')
encrypt_data = data[40:-16]
reply = _security.aes_decrypt(encrypt_data)
self.ip = '.'.join([str(i) for i in reply[3::-1]])
_LOGGER.debug("Decrypt Reply: {} {}".format(self.ip, reply.hex()))
self.port = int.from_bytes(reply[4:8], 'little')
# ssid like midea_xx_xxxx net_xx_xxxx
self.ssid = reply[41:41+reply[40]].decode("utf-8")
self.type = self.ssid.split('_')[1]
class scandeviceV1(scandevice):
def __init__(self, ip, data):
super().__init__()
self.version = 1
self.ip = ip
self.insert(data)
def insert(self, data):
root = ET.fromstring(data.decode(encoding="utf-8", errors="replace"))
child = root.find('body/device')
m = child.attrib
self.port, self.type = m['port'], str(hex(int(m['apc_type'])))[2:]
self.id = self.get_device_id()
def get_device_id(self, response):
response = self.get_device_info()
if response[64:-16][:6].hex() == '3c3f786d6c20':
xml = response[64:-16]
root = ET.fromstring(xml.decode(encoding="utf-8", errors="replace"))
child = root.find('smartDevice')
m = child.attrib
return int.from_bytes(bytearray.fromhex(m['devId']), 'little')
else:
return 0
def get_device_info(self):
# Create a TCP/IP socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.settimeout(8)
try:
# Connect the Device
device_address = (self.ip, self.port)
sock.connect(device_address)
# Send data
_LOGGER.debug("Sending to {}:{} {}".format(
self.ip, self.port, DEVICE_INFO_MSG.hex()))
sock.sendall(DEVICE_INFO_MSG)
# Received data
response = sock.recv(512)
except socket.error:
_LOGGER.info("Couldn't connect with Device {}:{}".format(
self.ip, self.port))
return bytearray(0)
except socket.timeout:
_LOGGER.info("Connect the Device {}:{} TimeOut for 8s. don't care about a small amount of this. if many maybe not support".format(
self.ip, self.port))
return bytearray(0)
finally:
sock.close()
_LOGGER.debug("Received from {}:{} {}".format(
self.ip, self.port, response.hex()))
return response
class MideaDiscovery:
def __init__(self, account=None, password=None, amount=1):
"""Init discovery."""
self.account = account
self.password = password
self.amount = amount
self.socket = _get_socket()
self.result = set()
self.found_devices = set()
async def find(self, ip=None):
if ip is not None:
return self.get(ip)
return await self.get_all()
async def get_all(self):
for i in range(self.amount):
_LOGGER.debug("Broadcast message sent: " + str(i+1))
await self._broadcast_message()
tasks = set()
while True:
task = await self._get_response()
if task:
tasks.add(task)
else:
break
await self._process_tasks(tasks)
return self.result
async def _process_tasks(self, tasks):
if len(tasks) > 0:
await asyncio.wait(tasks)
[self.result.add(task.result()) for task in tasks]
async def get(self, ip):
await self._send_message(ip)
task = await self._get_response(ip)
if task:
await self._process_tasks([task])
return self.result
async def _get_response(self, ip=None):
try:
data, addr = self.socket.recvfrom(512)
if ip is not None and addr[0] != ip:
return None
else:
ip = addr[0]
if ip not in self.found_devices:
_LOGGER.debug("Midea Local Data {} {}".format(ip, data.hex()))
self.found_devices.add(ip)
device = await scandevice.load(ip, data)
loop = asyncio.get_event_loop()
return loop.create_task(device.support_test(self.account, self.password))
except socket.timeout:
_LOGGER.debug("Socket timeout")
return None
async def _broadcast_message(self):
nets = await _get_networks()
for net in nets:
try:
self.socket.sendto(
BROADCAST_MSG, (str(net.broadcast_address), 6445)
)
self.socket.sendto(
BROADCAST_MSG, (str(net.broadcast_address), 20086)
)
except:
_LOGGER.debug("Unable to send broadcast to: " + str(net.broadcast_address))
async def _send_message(self, address):
self.socket.sendto(
BROADCAST_MSG, (address, 6445)
)
self.socket.sendto(
BROADCAST_MSG, (address, 20086)
)
_LOGGER.debug("Message sent")
def gettoken(udpid, account, password):
global Client, _lock
_lock.acquire()
try:
if Client is None:
Client = cloud(account, password)
if not Client.session:
Client.login()
finally:
_lock.release()
return Client.gettoken(udpid)
def _get_socket():
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
sock.settimeout(5)
return sock
async def _get_networks():
nets = []
adapters = ifaddr.get_adapters()
for adapter in adapters:
for ip in adapter.ips:
if ip.is_IPv4 and ip.network_prefix < 32:
localNet = IPv4Network(f"{ip.ip}/{ip.network_prefix}", strict=False)
if localNet.is_private and not localNet.is_loopback and not localNet.is_link_local:
nets.append(localNet)
if not nets:
_LOGGER.debug("No valid networks detected to send broadcast")
return nets