docs: реконструкция LAN-протокола FGLair, анализ legacy, планы fglair-core/HA/ESPHome

- PROTOCOL.md: полная спецификация (KDF, envelope/CBC-цепочка, local_reg,
  key exchange, commands.json 206/200, datapoint push, тайминги, таблицы
  свойств шаблонов A/B/F, облачный provisioning). Факты из APK помечены
  [APK], проверенные живыми экспериментами на AP-WC1E — [ПРОВЕРЕНО НА
  ПРИБОРЕ]: mDNS только :10276; лимит 2 LAN-сессии (3-я -> 503);
  принудительный re-key при возрасте сессии >= ~44с (единственный механизм
  самолечения десинхрона — 400/401 модуль игнорирует); записи не
  эхируются; delete_session освобождает слот.
- LEGACY_ANALYSIS.md: причины рассинхрона (keep-alive 1200с вместо 10-15с
  + seq_no-фильтр) и перегрузки модуля; требования к новой реализации.
- PLAN_CORE_LIBRARY.md: план C++20-библиотеки fglair-core (Linux + ESP-IDF),
  ключ lanip_key считается статичным, ротация — только ошибка + ручной
  перепровижининг.
- PLAN_HOME_ASSISTANT.md: pyfglair (cffi wheel) + custom component,
  облачный provisioning только в config flow, ключ виден в диагностике
  для копирования в ESPHome.
- PLAN_ESPHOME.md: external component, только ESP-IDF framework.
- tools/probe_reference.py: эталонный клиент протокола (проверен на
  приборе end-to-end); tools/probe_mdns.py — mDNS-проба.
- legacy/: снимок скрипта (апстрим gyro-labs/AirCon, вложенный клон не
  версионируется); apk/*.apk исключены из версионирования.
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import aiohttp
import base64
from getmac import get_mac_address
from http import HTTPStatus
import json
import logging
import ssl
import sys
from .app_mappings import *
_USER_AGENT = 'Dalvik/2.1.0 (Linux; U; Android 9.0; SM-G850F Build/LRX22G)'
async def _sign_in(user: str, passwd: str, user_server: str, app_id: str, app_secret: str,
session: aiohttp.ClientSession, ssl_context: ssl.SSLContext):
query = {
'user': {
'email': user,
'password': passwd,
'application': {
'app_id': app_id,
'app_secret': app_secret
}
}
}
headers = {
'Accept': 'application/json',
'Connection': 'Keep-Alive',
'Authorization': 'none',
'Content-Type': 'application/json',
'User-Agent': _USER_AGENT,
'Host': user_server,
'Accept-Encoding': 'gzip'
}
logging.debug('POST /users/sign_in.json, body=%r, headers=%r', json.dumps(query), headers)
async with session.request('POST',
f'https://{user_server}/users/sign_in.json',
json=query,
headers=headers,
ssl=ssl_context) as resp:
if resp.status != HTTPStatus.OK.value:
logging.error('Failed to login to Hisense server:\nStatus %d: %r', resp.status, resp.reason)
sys.exit(1)
resp_data = await resp.text()
try:
tokens = json.loads(resp_data)
except UnicodeDecodeError:
logging.exception('Failed to parse login tokens to Hisense server:\nData: %r', resp_data)
sys.exit(1)
return tokens['access_token']
async def _get_devices(devices_server: str, access_token: str, headers: dict,
session: aiohttp.ClientSession, ssl_context: ssl.SSLContext):
logging.debug('GET /apiv1/devices.json, headers=%r', headers)
async with session.get(f'https://{devices_server}/apiv1/devices.json',
headers=headers,
ssl=ssl_context) as resp:
if resp.status != HTTPStatus.OK.value:
logging.error('Failed to get devices data from Hisense server:\nStatus %d: %r', resp.status,
resp.reason)
sys.exit(1)
resp_data = await resp.text()
try:
devices = json.loads(resp_data)
except UnicodeDecodeError:
logging.exception('Failed to parse devices data from Hisense server:\nData: %r', resp_data)
sys.exit(1)
if not devices:
logging.error('No device is configured! Please configure a device first.')
sys.exit(1)
return devices
async def _get_lanip(devices_server: str, dsn: str, headers: dict, session: aiohttp.ClientSession,
ssl_context: ssl.SSLContext):
logging.debug(f'GET /apiv1/dsns/{dsn}/lan.json, headers=%r', headers)
async with session.get(f'https://{devices_server}/apiv1/dsns/{dsn}/lan.json',
headers=headers,
ssl=ssl_context) as resp:
if resp.status != HTTPStatus.OK.value:
logging.error('Failed to get device data from Hisense server: %r', resp)
sys.exit(1)
resp_data = await resp.text()
return json.loads(resp_data)['lanip']
async def _get_device_properties(devices_server: str, dsn: str, headers: dict,
session: aiohttp.ClientSession, ssl_context: ssl.SSLContext):
logging.debug(f'GET /apiv1/dsns/{dsn}/properties.json, headers=%r', headers)
async with session.get(f'https://{devices_server}/apiv1/dsns/{dsn}/properties.json',
headers=headers,
ssl=ssl_context) as resp:
if resp.status != HTTPStatus.OK.value:
logging.error('Failed to get properties data from Hisense server: %r', resp)
sys.exit(1)
resp_data = await resp.text()
return json.loads(resp_data)
async def perform_discovery(session: aiohttp.ClientSession,
app: str,
user: str,
passwd: str,
device_filter: str = None,
properties_filter: bool = False) -> dict:
if app in SECRET_ID_MAP:
app_prefix = SECRET_ID_MAP[app]
else:
app_prefix = 'a-Hisense-{}-field'.format(app)
if app in SECRET_ID_EXTRA_MAP:
app_id = '-'.join((app_prefix, SECRET_ID_EXTRA_MAP[app], 'id'))
else:
app_id = '-'.join((app_prefix, 'id'))
secret = base64.b64encode(SECRET_MAP[app]).decode('utf-8').rstrip('=').replace('+', '-').replace(
'/', '_')
app_secret = '-'.join((app_prefix, secret))
# Extract the region from the app ID (and fallback to US)
region = app[-2:]
if region not in AYLA_USER_SERVERS:
region = 'us'
user_server = AYLA_USER_SERVERS[region]
devices_server = AYLA_DEVICES_SERVERS[region]
ssl_context = ssl.SSLContext()
ssl_context.verify_mode = ssl.CERT_NONE
ssl_context.check_hostname = False
ssl_context.load_default_certs()
access_token = await _sign_in(user, passwd, user_server, app_id, app_secret, session, ssl_context)
result = []
headers = {
'Accept': 'application/json',
'Connection': 'Keep-Alive',
'Authorization': 'auth_token ' + access_token,
'User-Agent': _USER_AGENT,
'Host': devices_server,
'Accept-Encoding': 'gzip'
}
devices = await _get_devices(devices_server, access_token, headers, session, ssl_context)
logging.debug('Found devices: %r', devices)
for device in devices:
device_data = device['device']
if device_filter and device_filter != device_data['product_name']:
continue
dsn = device_data['dsn']
lanip = await _get_lanip(devices_server, dsn, headers, session, ssl_context)
properties_text = ''
if properties_filter:
props = await _get_device_properties(devices_server, dsn, headers, session, ssl_context)
device_data['properties'] = props
device_data['lanip_key'] = lanip['lanip_key']
device_data['lanip_key_id'] = lanip['lanip_key_id']
device_data['temp_type'] = 'C' if app in CELSIUS_BASED_APPS else 'F'
# If the server doesn't know the MAC address, fetch it from the local network.
if not device_data.get('mac'):
mac = get_mac_address(ip=device_data['lan_ip'])
if not mac or mac == '00:00:00:00:00:00':
logging.error(f'Failed to fetch MAC address for AC on IP address {device_data["lan_ip"]}.' +
'\nAre you sure it is connected? Skipping...')
continue
device_data['mac'] = mac.replace(':', '')
result.append(device_data)
return result