# -*- coding: utf-8 -*- # websocket.py # Copyright (C) 2015, 2016 LEAP # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . """ WebSockets Dispatcher Service. """ import os import pkg_resources from twisted.internet import reactor from twisted.application import service from twisted.web.server import Site from twisted.web.static import File from autobahn.twisted.resource import WebSocketResource from autobahn.twisted.websocket import WebSocketServerFactory from autobahn.twisted.websocket import WebSocketServerProtocol from leap.bitmask.core.dispatcher import CommandDispatcher class WebSocketsDispatcherService(service.Service): """ A Dispatcher for BitmaskCore exposing a WebSockets Endpoint. """ def __init__(self, core, port=8080, debug=False): self._core = core self.port = port self.debug = debug def startService(self): factory = WebSocketServerFactory(u"ws://127.0.0.1:%d" % self.port, debug=self.debug) factory.protocol = DispatcherProtocol factory.protocol.dispatcher = CommandDispatcher(self._core) # FIXME: Site.start/stopFactory should start/stop factories wrapped as # Resources factory.startFactory() resource = WebSocketResource(factory) # we server static files under "/" .. webdir = os.path.abspath( pkg_resources.resource_filename('leap.bitmask.core', 'web')) root = File(webdir) # and our WebSocket server under "/ws" root.putChild(u'bitmask', resource) # both under one Twisted Web Site site = Site(root) self.site = site self.factory = factory self.listener = reactor.listenTCP(self.port, site) def stopService(self): self.factory.stopFactory() self.site.stopFactory() self.listener.stopListening() class DispatcherProtocol(WebSocketServerProtocol): def onMessage(self, msg, binary): parts = msg.split() r = self.dispatcher.dispatch(parts) r.addCallback(self.defer_reply, binary) def reply(self, response, binary): self.sendMessage(response, binary) def defer_reply(self, response, binary): reactor.callLater(0, self.reply, response, binary) def _get_service(self, name): return self.core.getServiceNamed(name)