257 lines
8.8 KiB
Python
257 lines
8.8 KiB
Python
# -*- coding: utf-8 -*-
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###############################################################################
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import logging
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import websocket
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from json import loads
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import xml.etree.ElementTree as etree
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from threading import Thread
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from Queue import Queue
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from ssl import CERT_NONE
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from xbmc import sleep
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from utils import window, settings, ThreadMethods
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from companion import process_command
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import state
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###############################################################################
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log = logging.getLogger("PLEX."+__name__)
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###############################################################################
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@ThreadMethods(add_suspends=[state.SUSPEND_LIBRARY_THREAD])
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class WebSocket(Thread):
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opcode_data = (websocket.ABNF.OPCODE_TEXT, websocket.ABNF.OPCODE_BINARY)
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def __init__(self, callback=None):
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if callback is not None:
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self.mgr = callback
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self.ws = None
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Thread.__init__(self)
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def process(self, opcode, message):
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raise NotImplementedError
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def receive(self, ws):
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# Not connected yet
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if ws is None:
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raise websocket.WebSocketConnectionClosedException
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frame = ws.recv_frame()
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if not frame:
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raise websocket.WebSocketException("Not a valid frame %s" % frame)
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elif frame.opcode in self.opcode_data:
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return frame.opcode, frame.data
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elif frame.opcode == websocket.ABNF.OPCODE_CLOSE:
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ws.send_close()
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return frame.opcode, None
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elif frame.opcode == websocket.ABNF.OPCODE_PING:
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ws.pong("Hi!")
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return None, None
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def getUri(self):
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raise NotImplementedError
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def run(self):
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log.info("----===## Starting %s ##===----" % self.__class__.__name__)
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counter = 0
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handshake_counter = 0
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thread_stopped = self.thread_stopped
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thread_suspended = self.thread_suspended
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while not thread_stopped():
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# In the event the server goes offline
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while thread_suspended():
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# Set in service.py
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if self.ws is not None:
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try:
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self.ws.shutdown()
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except:
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pass
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self.ws = None
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if thread_stopped():
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# Abort was requested while waiting. We should exit
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log.info("##===---- %s Stopped ----===##"
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% self.__class__.__name__)
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return
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sleep(1000)
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try:
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self.process(*self.receive(self.ws))
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except websocket.WebSocketTimeoutException:
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# No worries if read timed out
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pass
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except websocket.WebSocketConnectionClosedException:
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log.info("Connection closed, (re)connecting")
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uri, sslopt = self.getUri()
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try:
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# Low timeout - let's us shut this thread down!
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self.ws = websocket.create_connection(
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uri,
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timeout=1,
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sslopt=sslopt,
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enable_multithread=True)
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except IOError:
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# Server is probably offline
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log.info("Error connecting")
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self.ws = None
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counter += 1
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if counter > 3:
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counter = 0
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self.IOError_response()
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sleep(1000)
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except websocket.WebSocketTimeoutException:
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log.info("timeout while connecting, trying again")
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self.ws = None
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sleep(1000)
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except websocket.WebSocketException as e:
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log.info('WebSocketException: %s' % e)
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if 'Handshake Status 401' in e.args:
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handshake_counter += 1
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if handshake_counter >= 5:
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log.info('Error in handshake detected. Stopping '
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'%s now' % self.__class__.__name__)
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break
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self.ws = None
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sleep(1000)
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except Exception as e:
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log.error("Unknown exception encountered in connecting: %s"
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% e)
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import traceback
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log.error("Traceback:\n%s" % traceback.format_exc())
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self.ws = None
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sleep(1000)
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else:
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counter = 0
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handshake_counter = 0
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except Exception as e:
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log.error("Unknown exception encountered: %s" % e)
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import traceback
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log.error("Traceback:\n%s" % traceback.format_exc())
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try:
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self.ws.shutdown()
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except:
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pass
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self.ws = None
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log.info("##===---- %s Stopped ----===##" % self.__class__.__name__)
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def stopThread(self):
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"""
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Overwrite this method from ThreadMethods to close websockets
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"""
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log.info("Stopping %s thread." % self.__class__.__name__)
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self._threadStopped = True
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try:
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self.ws.shutdown()
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except:
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pass
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class PMS_Websocket(WebSocket):
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"""
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Websocket connection with the PMS for Plex Companion
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"""
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# Communication with librarysync
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queue = Queue()
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def getUri(self):
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server = window('pms_server')
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# Get the appropriate prefix for the websocket
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if server.startswith('https'):
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server = "wss%s" % server[5:]
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else:
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server = "ws%s" % server[4:]
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uri = "%s/:/websockets/notifications" % server
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# Need to use plex.tv token, if any. NOT user token
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if state.PLEX_TOKEN:
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uri += '?X-Plex-Token=%s' % state.PLEX_TOKEN
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sslopt = {}
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if settings('sslverify') == "false":
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sslopt["cert_reqs"] = CERT_NONE
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log.debug("Uri: %s, sslopt: %s" % (uri, sslopt))
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return uri, sslopt
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def process(self, opcode, message):
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if opcode not in self.opcode_data:
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return False
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try:
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message = loads(message)
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except Exception as ex:
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log.error('Error decoding message from websocket: %s' % ex)
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log.error(message)
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return False
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try:
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message = message['NotificationContainer']
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except KeyError:
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log.error('Could not parse PMS message: %s' % message)
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return False
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# Triage
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typus = message.get('type')
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if typus is None:
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log.error('No message type, dropping message: %s' % message)
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return False
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log.debug('Received message from PMS server: %s' % message)
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# Drop everything we're not interested in
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if typus not in ('playing', 'timeline'):
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return True
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# Put PMS message on queue and let libsync take care of it
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self.queue.put(message)
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return True
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def IOError_response(self):
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log.warn("Repeatedly could not connect to PMS, "
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"declaring the connection dead")
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window('plex_online', value='false')
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class Alexa_Websocket(WebSocket):
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"""
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Websocket connection to talk to Amazon Alexa
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"""
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def getUri(self):
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self.plex_client_Id = window('plex_client_Id')
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uri = ('wss://pubsub.plex.tv/sub/websockets/%s/%s?X-Plex-Token=%s'
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% (window('currUserId'), self.plex_client_Id, state.PLEX_TOKEN))
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sslopt = {}
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log.debug("Uri: %s, sslopt: %s" % (uri, sslopt))
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return uri, sslopt
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def process(self, opcode, message):
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if opcode not in self.opcode_data:
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return False
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log.debug('Received the following message from Alexa:')
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log.debug(message)
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try:
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message = etree.fromstring(message)
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except Exception as ex:
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log.error('Error decoding message from Alexa: %s' % ex)
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return False
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try:
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if message.attrib['command'] == 'processRemoteControlCommand':
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message = message[0]
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else:
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log.error('Unknown Alexa message received')
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return False
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except:
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log.error('Could not parse Alexa message')
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return False
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process_command(message.attrib['path'][1:],
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message.attrib,
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queue=self.mgr.plexCompanion.queue)
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return True
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def IOError_response(self):
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pass
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def thread_suspended(self):
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"""
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Overwrite to ignore library sync stuff and allow to check for
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RESTRICTED_USER and PLEX_TOKEN
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"""
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return self._thread_suspended or state.RESTRICTED_USER \
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or not state.PLEX_TOKEN
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