supervisor/hassio/api/security.py
Pascal Vizeli 3bf446cbdb
Improve security layer (#352)
* Improve security layer

* Update logger

* Fix access

* Validate token

* fix

* fix some bugs

* fix lint
2018-02-11 00:05:20 +01:00

50 lines
1.4 KiB
Python

"""Handle security part of this API."""
import logging
import re
from aiohttp.web import middleware
from aiohttp.web_exceptions import HTTPUnauthorized
from ..const import HEADER_TOKEN, REQUEST_FROM
_LOGGER = logging.getLogger(__name__)
NO_SECURITY_CHECK = set((
re.compile(r"^/homeassistant/api/.*$"),
re.compile(r"^/homeassistant/websocket$")
))
@middleware
async def security_layer(request, handler):
"""Check security access of this layer."""
coresys = request.app['coresys']
hassio_token = request.headers.get(HEADER_TOKEN)
# Ignore security check
for rule in NO_SECURITY_CHECK:
if rule.match(request.path):
_LOGGER.debug("Passthrough %s", request.path)
return await handler(request)
# Need to be removed later
if not hassio_token:
_LOGGER.warning("No valid Hass.io token for API access!")
request[REQUEST_FROM] = 'UNKNOWN'
return await handler(request)
# Home-Assistant
if hassio_token == coresys.homeassistant.uuid:
_LOGGER.debug("%s access from Home-Assistant", request.path)
request[REQUEST_FROM] = 'homeassistant'
return await handler(request)
# Add-on
addon = coresys.addons.from_uuid(hassio_token)
if addon:
_LOGGER.info("%s access from %s", request.path, addon.slug)
request[REQUEST_FROM] = addon.slug
return await handler(request)
raise HTTPUnauthorized()