core/homeassistant/components/frontend/__init__.py

122 lines
3.8 KiB
Python

"""Handle the frontend for Home Assistant."""
import re
import os
import logging
from . import version, mdi_version
import homeassistant.util as util
from homeassistant.const import URL_ROOT, HTTP_OK
from homeassistant.components import api
DOMAIN = 'frontend'
DEPENDENCIES = ['api']
INDEX_PATH = os.path.join(os.path.dirname(__file__), 'index.html.template')
_LOGGER = logging.getLogger(__name__)
FRONTEND_URLS = [
URL_ROOT, '/logbook', '/history', '/map', '/devService', '/devState',
'/devEvent', '/devInfo', '/devTemplate',
re.compile(r'/states(/([a-zA-Z\._\-0-9/]+)|)'),
]
URL_API_BOOTSTRAP = "/api/bootstrap"
_FINGERPRINT = re.compile(r'^(\w+)-[a-z0-9]{32}\.(\w+)$', re.IGNORECASE)
def setup(hass, config):
"""Setup serving the frontend."""
for url in FRONTEND_URLS:
hass.http.register_path('GET', url, _handle_get_root, False)
hass.http.register_path('GET', '/service_worker.js',
_handle_get_service_worker, False)
# Bootstrap API
hass.http.register_path(
'GET', URL_API_BOOTSTRAP, _handle_get_api_bootstrap)
# Static files
hass.http.register_path(
'GET', re.compile(r'/static/(?P<file>[a-zA-Z\._\-0-9/]+)'),
_handle_get_static, False)
hass.http.register_path(
'HEAD', re.compile(r'/static/(?P<file>[a-zA-Z\._\-0-9/]+)'),
_handle_get_static, False)
hass.http.register_path(
'GET', re.compile(r'/local/(?P<file>[a-zA-Z\._\-0-9/]+)'),
_handle_get_local, False)
return True
def _handle_get_api_bootstrap(handler, path_match, data):
"""Return all data needed to bootstrap Home Assistant."""
hass = handler.server.hass
handler.write_json({
'config': hass.config.as_dict(),
'states': hass.states.all(),
'events': api.events_json(hass),
'services': api.services_json(hass),
})
def _handle_get_root(handler, path_match, data):
"""Render the frontend."""
if handler.server.development:
app_url = "home-assistant-polymer/src/home-assistant.html"
else:
app_url = "frontend-{}.html".format(version.VERSION)
# auto login if no password was set, else check api_password param
auth = ('no_password_set' if handler.server.api_password is None
else data.get('api_password', ''))
with open(INDEX_PATH) as template_file:
template_html = template_file.read()
template_html = template_html.replace('{{ app_url }}', app_url)
template_html = template_html.replace('{{ auth }}', auth)
template_html = template_html.replace('{{ icons }}', mdi_version.VERSION)
handler.send_response(HTTP_OK)
handler.write_content(template_html.encode("UTF-8"),
'text/html; charset=utf-8')
def _handle_get_service_worker(handler, path_match, data):
"""Return service worker for the frontend."""
if handler.server.development:
sw_path = "home-assistant-polymer/build/service_worker.js"
else:
sw_path = "service_worker.js"
handler.write_file(os.path.join(os.path.dirname(__file__), 'www_static',
sw_path))
def _handle_get_static(handler, path_match, data):
"""Return a static file for the frontend."""
req_file = util.sanitize_path(path_match.group('file'))
# Strip md5 hash out
fingerprinted = _FINGERPRINT.match(req_file)
if fingerprinted:
req_file = "{}.{}".format(*fingerprinted.groups())
path = os.path.join(os.path.dirname(__file__), 'www_static', req_file)
handler.write_file(path)
def _handle_get_local(handler, path_match, data):
"""Return a static file from the hass.config.path/www for the frontend."""
req_file = util.sanitize_path(path_match.group('file'))
path = handler.server.hass.config.path('www', req_file)
handler.write_file(path)