forked from platypush/platypush
267 lines
8 KiB
Python
267 lines
8 KiB
Python
import importlib
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import logging
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import os
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from functools import wraps
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from flask import abort, request, redirect, Response
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from redis import Redis
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# NOTE: The HTTP service will *only* work on top of a Redis bus. The default
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# internal bus service won't work as the web server will run in a different process.
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from platypush.bus.redis import RedisBus
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from platypush.config import Config
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from platypush.message import Message
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from platypush.message.request import Request
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from platypush.user import UserManager
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from platypush.utils import get_redis_queue_name_by_message, get_ip_or_hostname
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_bus = None
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_logger = None
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def bus():
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global _bus
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if _bus is None:
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_bus = RedisBus()
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return _bus
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def logger():
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global _logger
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if not _logger:
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log_args = {
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'level': logging.INFO,
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'format': '%(asctime)-15s|%(levelname)5s|%(name)s|%(message)s',
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}
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level = (Config.get('backend.http') or {}).get('logging') or \
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(Config.get('logging') or {}).get('level')
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filename = (Config.get('backend.http') or {}).get('filename')
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if level:
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log_args['level'] = getattr(logging, level.upper()) \
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if isinstance(level, str) else level
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if filename:
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log_args['filename'] = filename
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logging.basicConfig(**log_args)
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_logger = logging.getLogger('platyweb')
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return _logger
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def get_message_response(msg):
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redis = Redis(**bus().redis_args)
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response = redis.blpop(get_redis_queue_name_by_message(msg), timeout=60)
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if response and len(response) > 1:
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response = Message.build(response[1])
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else:
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response = None
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return response
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# noinspection PyProtectedMember
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def get_http_port():
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from platypush.backend.http import HttpBackend
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http_conf = Config.get('backend.http')
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return http_conf.get('port', HttpBackend._DEFAULT_HTTP_PORT)
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# noinspection PyProtectedMember
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def get_websocket_port():
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from platypush.backend.http import HttpBackend
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http_conf = Config.get('backend.http')
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return http_conf.get('websocket_port', HttpBackend._DEFAULT_WEBSOCKET_PORT)
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def send_message(msg, wait_for_response=True):
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msg = Message.build(msg)
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if isinstance(msg, Request):
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msg.origin = 'http'
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if Config.get('token'):
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msg.token = Config.get('token')
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bus().post(msg)
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if isinstance(msg, Request) and wait_for_response:
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response = get_message_response(msg)
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logger().debug('Processing response on the HTTP backend: {}'.
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format(response))
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return response
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def send_request(action, wait_for_response=True, **kwargs):
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msg = {
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'type': 'request',
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'action': action
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}
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if kwargs:
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msg['args'] = kwargs
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return send_message(msg, wait_for_response=wait_for_response)
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def _authenticate_token():
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token = Config.get('token')
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if 'X-Token' in request.headers:
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user_token = request.headers['X-Token']
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elif 'token' in request.args:
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user_token = request.args.get('token')
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else:
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return False
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return token and user_token == token
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def _authenticate_http():
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user_manager = UserManager()
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if not request.authorization:
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return False
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username = request.authorization.username
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password = request.authorization.password
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return user_manager.authenticate_user(username, password)
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def _authenticate_session():
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user_manager = UserManager()
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user_session_token = None
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user = None
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if 'X-Session-Token' in request.headers:
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user_session_token = request.headers['X-Session-Token']
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elif 'session_token' in request.args:
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user_session_token = request.args.get('session_token')
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elif 'session_token' in request.cookies:
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user_session_token = request.cookies.get('session_token')
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if user_session_token:
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user, session = user_manager.authenticate_user_session(user_session_token)
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return user is not None
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def _authenticate_csrf_token():
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user_manager = UserManager()
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user_session_token = None
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if 'X-Session-Token' in request.headers:
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user_session_token = request.headers['X-Session-Token']
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elif 'session_token' in request.args:
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user_session_token = request.args.get('session_token')
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elif 'session_token' in request.cookies:
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user_session_token = request.cookies.get('session_token')
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if user_session_token:
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user, session = user_manager.authenticate_user_session(user_session_token)
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else:
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return False
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if user is None:
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return False
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return session.csrf_token is None or request.form.get('csrf_token') == session.csrf_token
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def authenticate(redirect_page='', skip_auth_methods=None, check_csrf_token=False):
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def decorator(f):
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@wraps(f)
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def wrapper(*args, **kwargs):
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user_manager = UserManager()
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n_users = user_manager.get_user_count()
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token = Config.get('token')
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skip_methods = skip_auth_methods or []
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# User/pass HTTP authentication
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http_auth_ok = True
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if n_users > 0 and 'http' not in skip_methods:
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http_auth_ok = _authenticate_http()
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if http_auth_ok:
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return f(*args, **kwargs)
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# Token-based authentication
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token_auth_ok = True
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if token and 'token' not in skip_methods:
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token_auth_ok = _authenticate_token()
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if token_auth_ok:
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return f(*args, **kwargs)
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# Session token based authentication
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session_auth_ok = True
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if n_users > 0 and 'session' not in skip_methods:
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session_auth_ok = _authenticate_session()
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if session_auth_ok:
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return f(*args, **kwargs)
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return redirect('/login?redirect=' + redirect_page, 307)
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# CSRF token check
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if check_csrf_token:
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csrf_check_ok = _authenticate_csrf_token()
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if not csrf_check_ok:
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return abort(403, 'Invalid or missing csrf_token')
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if n_users == 0 and 'session' not in skip_methods:
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return redirect('/register?redirect=' + redirect_page, 307)
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if ('http' not in skip_methods and http_auth_ok) or \
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('token' not in skip_methods and token_auth_ok) or \
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('session' not in skip_methods and session_auth_ok):
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return f(*args, **kwargs)
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return Response('Authentication required', 401,
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{'WWW-Authenticate': 'Basic realm="Login required"'})
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return wrapper
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return decorator
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def get_routes():
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routes_dir = os.path.join(
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os.path.dirname(os.path.abspath(__file__)), 'routes')
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routes = []
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base_module = '.'.join(__name__.split('.')[:-1])
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for path, dirs, files in os.walk(routes_dir):
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for f in files:
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if f.endswith('.py'):
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mod_name = '.'.join(
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(base_module + '.' + os.path.join(path, f).replace(
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os.path.dirname(__file__), '')[1:].replace(os.sep, '.')).split('.')
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[:(-2 if f == '__init__.py' else -1)])
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try:
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mod = importlib.import_module(mod_name)
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if hasattr(mod, '__routes__'):
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routes.extend(mod.__routes__)
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except Exception as e:
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logger().warning('Could not import routes from {}/{}: {}: {}'.
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format(path, f, type(e), str(e)))
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return routes
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def get_local_base_url():
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http_conf = Config.get('backend.http') or {}
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return '{proto}://localhost:{port}'.format(
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proto=('https' if http_conf.get('ssl_cert') else 'http'),
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port=get_http_port())
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def get_remote_base_url():
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http_conf = Config.get('backend.http') or {}
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return '{proto}://{host}:{port}'.format(
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proto=('https' if http_conf.get('ssl_cert') else 'http'),
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host=get_ip_or_hostname(), port=get_http_port())
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# vim:sw=4:ts=4:et:
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