mirror of
https://github.com/home-assistant/core
synced 2024-09-28 03:04:04 +02:00
273 lines
8.9 KiB
Python
273 lines
8.9 KiB
Python
"""Auth providers for Home Assistant."""
|
|
import importlib
|
|
import logging
|
|
import types
|
|
from typing import Any, Dict, List, Optional
|
|
|
|
import voluptuous as vol
|
|
from voluptuous.humanize import humanize_error
|
|
|
|
from homeassistant import data_entry_flow, requirements
|
|
from homeassistant.core import callback, HomeAssistant
|
|
from homeassistant.const import CONF_ID, CONF_NAME, CONF_TYPE
|
|
from homeassistant.exceptions import HomeAssistantError
|
|
from homeassistant.util import dt as dt_util
|
|
from homeassistant.util.decorator import Registry
|
|
|
|
from ..auth_store import AuthStore
|
|
from ..const import MFA_SESSION_EXPIRATION
|
|
from ..models import Credentials, User, UserMeta
|
|
|
|
_LOGGER = logging.getLogger(__name__)
|
|
DATA_REQS = "auth_prov_reqs_processed"
|
|
|
|
AUTH_PROVIDERS = Registry()
|
|
|
|
AUTH_PROVIDER_SCHEMA = vol.Schema(
|
|
{
|
|
vol.Required(CONF_TYPE): str,
|
|
vol.Optional(CONF_NAME): str,
|
|
# Specify ID if you have two auth providers for same type.
|
|
vol.Optional(CONF_ID): str,
|
|
},
|
|
extra=vol.ALLOW_EXTRA,
|
|
)
|
|
|
|
|
|
class AuthProvider:
|
|
"""Provider of user authentication."""
|
|
|
|
DEFAULT_TITLE = "Unnamed auth provider"
|
|
|
|
def __init__(
|
|
self, hass: HomeAssistant, store: AuthStore, config: Dict[str, Any]
|
|
) -> None:
|
|
"""Initialize an auth provider."""
|
|
self.hass = hass
|
|
self.store = store
|
|
self.config = config
|
|
|
|
@property
|
|
def id(self) -> Optional[str]: # pylint: disable=invalid-name
|
|
"""Return id of the auth provider.
|
|
|
|
Optional, can be None.
|
|
"""
|
|
return self.config.get(CONF_ID)
|
|
|
|
@property
|
|
def type(self) -> str:
|
|
"""Return type of the provider."""
|
|
return self.config[CONF_TYPE] # type: ignore
|
|
|
|
@property
|
|
def name(self) -> str:
|
|
"""Return the name of the auth provider."""
|
|
return self.config.get(CONF_NAME, self.DEFAULT_TITLE)
|
|
|
|
@property
|
|
def support_mfa(self) -> bool:
|
|
"""Return whether multi-factor auth supported by the auth provider."""
|
|
return True
|
|
|
|
async def async_credentials(self) -> List[Credentials]:
|
|
"""Return all credentials of this provider."""
|
|
users = await self.store.async_get_users()
|
|
return [
|
|
credentials
|
|
for user in users
|
|
for credentials in user.credentials
|
|
if (
|
|
credentials.auth_provider_type == self.type
|
|
and credentials.auth_provider_id == self.id
|
|
)
|
|
]
|
|
|
|
@callback
|
|
def async_create_credentials(self, data: Dict[str, str]) -> Credentials:
|
|
"""Create credentials."""
|
|
return Credentials(
|
|
auth_provider_type=self.type, auth_provider_id=self.id, data=data
|
|
)
|
|
|
|
# Implement by extending class
|
|
|
|
async def async_login_flow(self, context: Optional[Dict]) -> "LoginFlow":
|
|
"""Return the data flow for logging in with auth provider.
|
|
|
|
Auth provider should extend LoginFlow and return an instance.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
async def async_get_or_create_credentials(
|
|
self, flow_result: Dict[str, str]
|
|
) -> Credentials:
|
|
"""Get credentials based on the flow result."""
|
|
raise NotImplementedError
|
|
|
|
async def async_user_meta_for_credentials(
|
|
self, credentials: Credentials
|
|
) -> UserMeta:
|
|
"""Return extra user metadata for credentials.
|
|
|
|
Will be used to populate info when creating a new user.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
async def async_initialize(self) -> None:
|
|
"""Initialize the auth provider."""
|
|
pass
|
|
|
|
|
|
async def auth_provider_from_config(
|
|
hass: HomeAssistant, store: AuthStore, config: Dict[str, Any]
|
|
) -> AuthProvider:
|
|
"""Initialize an auth provider from a config."""
|
|
provider_name = config[CONF_TYPE]
|
|
module = await load_auth_provider_module(hass, provider_name)
|
|
|
|
try:
|
|
config = module.CONFIG_SCHEMA(config) # type: ignore
|
|
except vol.Invalid as err:
|
|
_LOGGER.error(
|
|
"Invalid configuration for auth provider %s: %s",
|
|
provider_name,
|
|
humanize_error(config, err),
|
|
)
|
|
raise
|
|
|
|
return AUTH_PROVIDERS[provider_name](hass, store, config) # type: ignore
|
|
|
|
|
|
async def load_auth_provider_module(
|
|
hass: HomeAssistant, provider: str
|
|
) -> types.ModuleType:
|
|
"""Load an auth provider."""
|
|
try:
|
|
module = importlib.import_module(f"homeassistant.auth.providers.{provider}")
|
|
except ImportError as err:
|
|
_LOGGER.error("Unable to load auth provider %s: %s", provider, err)
|
|
raise HomeAssistantError(f"Unable to load auth provider {provider}: {err}")
|
|
|
|
if hass.config.skip_pip or not hasattr(module, "REQUIREMENTS"):
|
|
return module
|
|
|
|
processed = hass.data.get(DATA_REQS)
|
|
|
|
if processed is None:
|
|
processed = hass.data[DATA_REQS] = set()
|
|
elif provider in processed:
|
|
return module
|
|
|
|
# https://github.com/python/mypy/issues/1424
|
|
reqs = module.REQUIREMENTS # type: ignore
|
|
await requirements.async_process_requirements(
|
|
hass, f"auth provider {provider}", reqs
|
|
)
|
|
|
|
processed.add(provider)
|
|
return module
|
|
|
|
|
|
class LoginFlow(data_entry_flow.FlowHandler):
|
|
"""Handler for the login flow."""
|
|
|
|
def __init__(self, auth_provider: AuthProvider) -> None:
|
|
"""Initialize the login flow."""
|
|
self._auth_provider = auth_provider
|
|
self._auth_module_id: Optional[str] = None
|
|
self._auth_manager = auth_provider.hass.auth # type: ignore
|
|
self.available_mfa_modules: Dict[str, str] = {}
|
|
self.created_at = dt_util.utcnow()
|
|
self.invalid_mfa_times = 0
|
|
self.user: Optional[User] = None
|
|
|
|
async def async_step_init(
|
|
self, user_input: Optional[Dict[str, str]] = None
|
|
) -> Dict[str, Any]:
|
|
"""Handle the first step of login flow.
|
|
|
|
Return self.async_show_form(step_id='init') if user_input is None.
|
|
Return await self.async_finish(flow_result) if login init step pass.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
async def async_step_select_mfa_module(
|
|
self, user_input: Optional[Dict[str, str]] = None
|
|
) -> Dict[str, Any]:
|
|
"""Handle the step of select mfa module."""
|
|
errors = {}
|
|
|
|
if user_input is not None:
|
|
auth_module = user_input.get("multi_factor_auth_module")
|
|
if auth_module in self.available_mfa_modules:
|
|
self._auth_module_id = auth_module
|
|
return await self.async_step_mfa()
|
|
errors["base"] = "invalid_auth_module"
|
|
|
|
if len(self.available_mfa_modules) == 1:
|
|
self._auth_module_id = list(self.available_mfa_modules.keys())[0]
|
|
return await self.async_step_mfa()
|
|
|
|
return self.async_show_form(
|
|
step_id="select_mfa_module",
|
|
data_schema=vol.Schema(
|
|
{"multi_factor_auth_module": vol.In(self.available_mfa_modules)}
|
|
),
|
|
errors=errors,
|
|
)
|
|
|
|
async def async_step_mfa(
|
|
self, user_input: Optional[Dict[str, str]] = None
|
|
) -> Dict[str, Any]:
|
|
"""Handle the step of mfa validation."""
|
|
assert self.user
|
|
|
|
errors = {}
|
|
|
|
auth_module = self._auth_manager.get_auth_mfa_module(self._auth_module_id)
|
|
if auth_module is None:
|
|
# Given an invalid input to async_step_select_mfa_module
|
|
# will show invalid_auth_module error
|
|
return await self.async_step_select_mfa_module(user_input={})
|
|
|
|
if user_input is None and hasattr(
|
|
auth_module, "async_initialize_login_mfa_step"
|
|
):
|
|
try:
|
|
await auth_module.async_initialize_login_mfa_step(self.user.id)
|
|
except HomeAssistantError:
|
|
_LOGGER.exception("Error initializing MFA step")
|
|
return self.async_abort(reason="unknown_error")
|
|
|
|
if user_input is not None:
|
|
expires = self.created_at + MFA_SESSION_EXPIRATION
|
|
if dt_util.utcnow() > expires:
|
|
return self.async_abort(reason="login_expired")
|
|
|
|
result = await auth_module.async_validate(self.user.id, user_input)
|
|
if not result:
|
|
errors["base"] = "invalid_code"
|
|
self.invalid_mfa_times += 1
|
|
if self.invalid_mfa_times >= auth_module.MAX_RETRY_TIME > 0:
|
|
return self.async_abort(reason="too_many_retry")
|
|
|
|
if not errors:
|
|
return await self.async_finish(self.user)
|
|
|
|
description_placeholders: Dict[str, Optional[str]] = {
|
|
"mfa_module_name": auth_module.name,
|
|
"mfa_module_id": auth_module.id,
|
|
}
|
|
|
|
return self.async_show_form(
|
|
step_id="mfa",
|
|
data_schema=auth_module.input_schema,
|
|
description_placeholders=description_placeholders,
|
|
errors=errors,
|
|
)
|
|
|
|
async def async_finish(self, flow_result: Any) -> Dict:
|
|
"""Handle the pass of login flow."""
|
|
return self.async_create_entry(title=self._auth_provider.name, data=flow_result)
|