core/homeassistant/components/frontend/__init__.py

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"""
homeassistant.components.frontend
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Provides a frontend for Home Assistant.
"""
import re
import os
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import logging
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from . import version
import homeassistant.util as util
DOMAIN = 'frontend'
DEPENDENCIES = ['api']
HTTP_OK = 200
HTTP_CREATED = 201
HTTP_MOVED_PERMANENTLY = 301
HTTP_BAD_REQUEST = 400
HTTP_UNAUTHORIZED = 401
HTTP_NOT_FOUND = 404
HTTP_METHOD_NOT_ALLOWED = 405
HTTP_UNPROCESSABLE_ENTITY = 422
URL_ROOT = "/"
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_LOGGER = logging.getLogger(__name__)
def setup(hass, config):
""" Setup serving the frontend. """
if 'http' not in hass.components:
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_LOGGER.error('Dependency http is not loaded')
return False
hass.http.register_path('GET', URL_ROOT, _handle_get_root, False)
# 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)
return True
def _handle_get_root(handler, path_match, data):
""" Renders the debug interface. """
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def write(txt):
""" Helper to write text to the output. """
handler.wfile.write((txt + "\n").encode("UTF-8"))
handler.send_response(HTTP_OK)
handler.send_header('Content-type', 'text/html; charset=utf-8')
handler.end_headers()
if handler.server.development:
app_url = "polymer/home-assistant.html"
else:
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app_url = "frontend-{}.html".format(version.VERSION)
# auto login if no password was set, else check api_password param
auth = (handler.server.api_password if handler.server.no_password_set
else data.get('api_password', ''))
write(("<!doctype html>"
"<html>"
"<head><title>Home Assistant</title>"
"<meta name='mobile-web-app-capable' content='yes'>"
"<link rel='shortcut icon' href='/static/favicon.ico' />"
"<link rel='icon' type='image/png' "
" href='/static/favicon-192x192.png' sizes='192x192'>"
"<meta name='viewport' content='width=device-width, "
" user-scalable=no, initial-scale=1.0, "
" minimum-scale=1.0, maximum-scale=1.0' />"
"<meta name='theme-color' content='#03a9f4'>"
"</head>"
"<body fullbleed>"
"<h3 id='init' align='center'>Initializing Home Assistant</h3>"
"<script"
" src='/static/webcomponents.min.js'></script>"
"<link rel='import' href='/static/{}' />"
"<home-assistant auth='{}'></home-assistant>"
"</body></html>").format(app_url, auth))
def _handle_get_static(handler, path_match, data):
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""" Returns a static file for the frontend. """
req_file = util.sanitize_path(path_match.group('file'))
# Strip md5 hash out of frontend filename
if re.match(r'^frontend-[A-Za-z0-9]{32}\.html$', req_file):
req_file = "frontend.html"
path = os.path.join(os.path.dirname(__file__), 'www_static', req_file)
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handler.write_file(path)