258 lines
8.5 KiB
Python
258 lines
8.5 KiB
Python
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"""Config flow to configure homekit_controller."""
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import os
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import json
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import logging
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import voluptuous as vol
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from homeassistant import config_entries
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from homeassistant.core import callback
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from .const import DOMAIN, KNOWN_DEVICES
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from .connection import get_bridge_information, get_accessory_name
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HOMEKIT_IGNORE = [
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'BSB002',
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'Home Assistant Bridge',
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'TRADFRI gateway',
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]
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HOMEKIT_DIR = '.homekit'
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PAIRING_FILE = 'pairing.json'
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_LOGGER = logging.getLogger(__name__)
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def load_old_pairings(hass):
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"""Load any old pairings from on-disk json fragments."""
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old_pairings = {}
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data_dir = os.path.join(hass.config.path(), HOMEKIT_DIR)
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pairing_file = os.path.join(data_dir, PAIRING_FILE)
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# Find any pairings created with in HA 0.85 / 0.86
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if os.path.exists(pairing_file):
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with open(pairing_file) as pairing_file:
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old_pairings.update(json.load(pairing_file))
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# Find any pairings created in HA <= 0.84
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if os.path.exists(data_dir):
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for device in os.listdir(data_dir):
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if not device.startswith('hk-'):
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continue
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alias = device[3:]
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if alias in old_pairings:
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continue
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with open(os.path.join(data_dir, device)) as pairing_data_fp:
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old_pairings[alias] = json.load(pairing_data_fp)
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return old_pairings
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@callback
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def find_existing_host(hass, serial):
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"""Return a set of the configured hosts."""
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for entry in hass.config_entries.async_entries(DOMAIN):
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if entry.data['AccessoryPairingID'] == serial:
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return entry
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@config_entries.HANDLERS.register(DOMAIN)
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class HomekitControllerFlowHandler(config_entries.ConfigFlow):
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"""Handle a HomeKit config flow."""
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VERSION = 1
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CONNECTION_CLASS = config_entries.CONN_CLASS_LOCAL_POLL
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def __init__(self):
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"""Initialize the homekit_controller flow."""
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self.model = None
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self.hkid = None
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self.devices = {}
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async def async_step_user(self, user_input=None):
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"""Handle a flow start."""
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import homekit
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errors = {}
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if user_input is not None:
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key = user_input['device']
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props = self.devices[key]['properties']
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self.hkid = props['id']
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self.model = props['md']
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return await self.async_step_pair()
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controller = homekit.Controller()
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all_hosts = await self.hass.async_add_executor_job(
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controller.discover, 5
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)
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self.devices = {}
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for host in all_hosts:
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status_flags = int(host['properties']['sf'])
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paired = not status_flags & 0x01
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if paired:
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continue
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self.devices[host['properties']['id']] = host
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if not self.devices:
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return self.async_abort(
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reason='no_devices'
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)
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return self.async_show_form(
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step_id='user',
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errors=errors,
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data_schema=vol.Schema({
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vol.Required('device'): vol.In(self.devices.keys()),
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})
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)
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async def async_step_discovery(self, discovery_info):
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"""Handle a discovered HomeKit accessory.
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This flow is triggered by the discovery component.
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"""
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# Normalize properties from discovery
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# homekit_python has code to do this, but not in a form we can
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# easily use, so do the bare minimum ourselves here instead.
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properties = {
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key.lower(): value
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for (key, value) in discovery_info['properties'].items()
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}
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# The hkid is a unique random number that looks like a pairing code.
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# It changes if a device is factory reset.
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hkid = properties['id']
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model = properties['md']
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status_flags = int(properties['sf'])
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paired = not status_flags & 0x01
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# The configuration number increases every time the characteristic map
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# needs updating. Some devices use a slightly off-spec name so handle
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# both cases.
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try:
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config_num = int(properties['c#'])
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except KeyError:
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_LOGGER.warning(
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"HomeKit device %s: c# not exposed, in violation of spec",
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hkid)
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config_num = None
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if paired:
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if hkid in self.hass.data.get(KNOWN_DEVICES, {}):
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# The device is already paired and known to us
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# According to spec we should monitor c# (config_num) for
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# changes. If it changes, we check for new entities
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conn = self.hass.data[KNOWN_DEVICES][hkid]
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if conn.config_num != config_num:
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_LOGGER.debug(
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"HomeKit info %s: c# incremented, refreshing entities",
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hkid)
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self.hass.async_create_task(
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conn.async_config_num_changed(config_num))
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return self.async_abort(reason='already_configured')
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old_pairings = await self.hass.async_add_executor_job(
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load_old_pairings,
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self.hass
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)
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if hkid in old_pairings:
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return await self.async_import_legacy_pairing(
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properties,
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old_pairings[hkid]
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)
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# Device is paired but not to us - ignore it
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_LOGGER.debug("HomeKit device %s ignored as already paired", hkid)
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return self.async_abort(reason='already_paired')
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# Devices in HOMEKIT_IGNORE have native local integrations - users
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# should be encouraged to use native integration and not confused
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# by alternative HK API.
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if model in HOMEKIT_IGNORE:
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return self.async_abort(reason='ignored_model')
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# Device isn't paired with us or anyone else.
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# But we have a 'complete' config entry for it - that is probably
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# invalid. Remove it automatically.
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existing = find_existing_host(self.hass, hkid)
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if existing:
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await self.hass.config_entries.async_remove(existing.entry_id)
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self.model = model
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self.hkid = hkid
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return await self.async_step_pair()
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async def async_import_legacy_pairing(self, discovery_props, pairing_data):
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"""Migrate a legacy pairing to config entries."""
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from homekit.controller import Pairing
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hkid = discovery_props['id']
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existing = find_existing_host(self.hass, hkid)
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if existing:
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_LOGGER.info(
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("Legacy configuration for homekit accessory %s"
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"not loaded as already migrated"), hkid)
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return self.async_abort(reason='already_configured')
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_LOGGER.info(
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("Legacy configuration %s for homekit"
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"accessory migrated to config entries"), hkid)
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pairing = Pairing(pairing_data)
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return await self._entry_from_accessory(pairing)
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async def async_step_pair(self, pair_info=None):
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"""Pair with a new HomeKit accessory."""
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import homekit # pylint: disable=import-error
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errors = {}
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if pair_info:
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code = pair_info['pairing_code']
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controller = homekit.Controller()
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try:
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await self.hass.async_add_executor_job(
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controller.perform_pairing, self.hkid, self.hkid, code
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)
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pairing = controller.pairings.get(self.hkid)
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if pairing:
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return await self._entry_from_accessory(
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pairing)
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errors['pairing_code'] = 'unable_to_pair'
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except homekit.AuthenticationError:
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errors['pairing_code'] = 'authentication_error'
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except homekit.UnknownError:
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errors['pairing_code'] = 'unknown_error'
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except homekit.UnavailableError:
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return self.async_abort(reason='already_paired')
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return self.async_show_form(
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step_id='pair',
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errors=errors,
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data_schema=vol.Schema({
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vol.Required('pairing_code'): vol.All(str, vol.Strip),
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})
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)
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async def _entry_from_accessory(self, pairing):
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"""Return a config entry from an initialized bridge."""
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accessories = await self.hass.async_add_executor_job(
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pairing.list_accessories_and_characteristics
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)
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bridge_info = get_bridge_information(accessories)
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name = get_accessory_name(bridge_info)
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return self.async_create_entry(
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title=name,
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data=pairing.pairing_data,
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)
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