#!/usr/bin/env python # -*- coding: utf-8 -*- from logging import getLogger from json import loads from ssl import CERT_NONE from . import backgroundthread, websocket, utils, companion, app, variables as v ############################################################################### LOG = getLogger('PLEX.websocket_client') ############################################################################### class WebSocket(backgroundthread.KillableThread): opcode_data = (websocket.ABNF.OPCODE_TEXT, websocket.ABNF.OPCODE_BINARY) def __init__(self): self.ws = None super(WebSocket, self).__init__() def process(self, opcode, message): raise NotImplementedError def receive(self, ws): # Not connected yet if ws is None: raise websocket.WebSocketConnectionClosedException frame = ws.recv_frame() if not frame: raise websocket.WebSocketException("Not a valid frame %s" % frame) elif frame.opcode in self.opcode_data: return frame.opcode, frame.data elif frame.opcode == websocket.ABNF.OPCODE_CLOSE: ws.send_close() return frame.opcode, None elif frame.opcode == websocket.ABNF.OPCODE_PING: ws.pong("Hi!") return None, None def getUri(self): raise NotImplementedError def run(self): LOG.info("----===## Starting %s ##===----", self.__class__.__name__) counter = 0 while not self.isCanceled(): # In the event the server goes offline while self.isSuspended(): # Set in service.py if self.ws is not None: self.ws.close() self.ws = None if self.isCanceled(): # Abort was requested while waiting. We should exit LOG.info("##===---- %s Stopped ----===##", self.__class__.__name__) return app.APP.monitor.waitForAbort(1) try: self.process(*self.receive(self.ws)) except websocket.WebSocketTimeoutException: # No worries if read timed out pass except websocket.WebSocketConnectionClosedException: LOG.info("%s: connection closed, (re)connecting", self.__class__.__name__) uri, sslopt = self.getUri() try: # Low timeout - let's us shut this thread down! self.ws = websocket.create_connection( uri, timeout=1, sslopt=sslopt, enable_multithread=True) except IOError: # Server is probably offline LOG.info("%s: Error connecting", self.__class__.__name__) self.ws = None counter += 1 if counter >= 10: LOG.info('%s: Repeated IOError detected. Stopping now', self.__class__.__name__) break app.APP.monitor.waitForAbort(1) except websocket.WebSocketTimeoutException: LOG.info("%s: Timeout while connecting, trying again", self.__class__.__name__) self.ws = None app.APP.monitor.waitForAbort(1) except websocket.WebSocketException as e: LOG.info('%s: WebSocketException: %s', self.__class__.__name__, e) if ('Handshake Status 401' in e.args or 'Handshake Status 403' in e.args): counter += 1 if counter >= 5: LOG.info('%s: Error in handshake detected. ' 'Stopping now', self.__class__.__name__) break self.ws = None app.APP.monitor.waitForAbort(1) except Exception as e: LOG.error('%s: Unknown exception encountered when ' 'connecting: %s', self.__class__.__name__, e) import traceback LOG.error("%s: Traceback:\n%s", self.__class__.__name__, traceback.format_exc()) self.ws = None app.APP.monitor.waitForAbort(1) else: counter = 0 except Exception as e: LOG.error("%s: Unknown exception encountered: %s", self.__class__.__name__, e) import traceback LOG.error("%s: Traceback:\n%s", self.__class__.__name__, traceback.format_exc()) if self.ws is not None: self.ws.close() self.ws = None # Close websocket connection on shutdown if self.ws is not None: self.ws.close() LOG.info("##===---- %s Stopped ----===##", self.__class__.__name__) class PMS_Websocket(WebSocket): """ Websocket connection with the PMS for Plex Companion """ def isSuspended(self): """ Returns True if the thread is suspended """ return (self._suspended or app.SYNC.suspend_library_thread or app.SYNC.background_sync_disabled) def getUri(self): server = app.CONN.server # Get the appropriate prefix for the websocket if server.startswith('https'): server = "wss%s" % server[5:] else: server = "ws%s" % server[4:] uri = "%s/:/websockets/notifications" % server # Need to use plex.tv token, if any. NOT user token if app.ACCOUNT.plex_token: uri += '?X-Plex-Token=%s' % app.ACCOUNT.plex_token sslopt = {} if utils.settings('sslverify') == "false": sslopt["cert_reqs"] = CERT_NONE LOG.debug("%s: Uri: %s, sslopt: %s", self.__class__.__name__, uri, sslopt) return uri, sslopt def process(self, opcode, message): if opcode not in self.opcode_data: return try: message = loads(message) except ValueError: LOG.error('%s: Error decoding message from websocket', self.__class__.__name__) LOG.error(message) return try: message = message['NotificationContainer'] except KeyError: LOG.error('%s: Could not parse PMS message: %s', self.__class__.__name__, message) return # Triage typus = message.get('type') if typus is None: LOG.error('%s: No message type, dropping message: %s', self.__class__.__name__, message) return LOG.debug('%s: Received message from PMS server: %s', self.__class__.__name__, message) # Drop everything we're not interested in if typus not in ('playing', 'timeline', 'activity'): return elif typus == 'activity' and app.SYNC.db_scan is True: # Only add to processing if PKC is NOT doing a lib scan (and thus # possibly causing these reprocessing messages en mass) LOG.debug('%s: Dropping message as PKC is currently synching', self.__class__.__name__) else: # Put PMS message on queue and let libsync take care of it app.APP.websocket_queue.put(message) class Alexa_Websocket(WebSocket): """ Websocket connection to talk to Amazon Alexa. """ def isSuspended(self): """ Overwrite method since we need to check for plex token """ return (self._suspended or not app.ACCOUNT.plex_token or app.ACCOUNT.restricted_user) def getUri(self): uri = ('wss://pubsub.plex.tv/sub/websockets/%s/%s?X-Plex-Token=%s' % (app.ACCOUNT.plex_user_id, v.PKC_MACHINE_IDENTIFIER, app.ACCOUNT.plex_token)) sslopt = {} LOG.debug("%s: Uri: %s, sslopt: %s", self.__class__.__name__, uri, sslopt) return uri, sslopt def process(self, opcode, message): if opcode not in self.opcode_data: return LOG.debug('%s: Received the following message from Alexa:', self.__class__.__name__) LOG.debug('%s: %s', self.__class__.__name__, message) try: message = utils.defused_etree.fromstring(message) except Exception as ex: LOG.error('%s: Error decoding message from Alexa: %s', self.__class__.__name__, ex) return try: if message.attrib['command'] == 'processRemoteControlCommand': message = message[0] else: LOG.error('%s: Unknown Alexa message received', self.__class__.__name__) return except: LOG.error('%s: Could not parse Alexa message', self.__class__.__name__) return companion.process_command(message.attrib['path'][1:], message.attrib)