def client_connected(self, listener_name, reader: ReaderAdapter, writer: WriterAdapter): # Wait for connection available on listener server = self._servers.get(listener_name, None) if not server: raise BrokerException("Invalid listener name '%s'" % listener_name) yield from server.acquire_connection() remote_address, remote_port = writer.get_peer_info() self.logger.info("Connection from %s:%d on listener '%s'" % (remote_address, remote_port, listener_name)) # Wait for first packet and expect a CONNECT try: handler, client_session = yield from BrokerProtocolHandler.init_from_connect( reader, writer, self.plugins_manager, loop=self._loop) except HBMQTTException as exc: self.logger.warning( "[MQTT-3.1.0-1] %s: Can't read first packet an CONNECT: %s" % (format_client_message(address=remote_address, port=remote_port), exc)) #yield from writer.close() self.logger.debug("Connection closed") return except MQTTException as me: self.logger.error('Invalid connection from %s : %s' % (format_client_message(address=remote_address, port=remote_port), me)) yield from writer.close() self.logger.debug("Connection closed") return if client_session.clean_session: # Delete existing session and create a new one if client_session.client_id is not None and client_session.client_id != "": self.delete_session(client_session.client_id) else: client_session.client_id = gen_client_id() client_session.parent = 0 else: # Get session from cache if client_session.client_id in self._sessions: self.logger.debug( "Found old session %s" % repr(self._sessions[client_session.client_id])) (client_session, h) = self._sessions[client_session.client_id] client_session.parent = 1 else: client_session.parent = 0 if client_session.keep_alive > 0: client_session.keep_alive += self.config[ 'timeout-disconnect-delay'] self.logger.debug("Keep-alive timeout=%d" % client_session.keep_alive) handler.attach(client_session, reader, writer) self._sessions[client_session.client_id] = (client_session, handler) authenticated = yield from self.authenticate( client_session, self.listeners_config[listener_name]) if not authenticated: yield from writer.close() server.release_connection() # Delete client from connections list return while True: try: client_session.transitions.connect() break except (MachineError, ValueError): # Backwards compat: MachineError is raised by transitions < 0.5.0. self.logger.warning( "Client %s is reconnecting too quickly, make it wait" % client_session.client_id) # Wait a bit may be client is reconnecting too fast yield from asyncio.sleep(1, loop=self._loop) yield from handler.mqtt_connack_authorize(authenticated) yield from self.plugins_manager.fire_event( EVENT_BROKER_CLIENT_CONNECTED, client_id=client_session.client_id) self.logger.debug("%s Start messages handling" % client_session.client_id) yield from handler.start() self.logger.debug("Retained messages queue size: %d" % client_session.retained_messages.qsize()) yield from self.publish_session_retained_messages(client_session) # Init and start loop for handling client messages (publish, subscribe/unsubscribe, disconnect) disconnect_waiter = asyncio.ensure_future(handler.wait_disconnect(), loop=self._loop) subscribe_waiter = asyncio.ensure_future( handler.get_next_pending_subscription(), loop=self._loop) unsubscribe_waiter = asyncio.ensure_future( handler.get_next_pending_unsubscription(), loop=self._loop) wait_deliver = asyncio.ensure_future( handler.mqtt_deliver_next_message(), loop=self._loop) connected = True while connected: try: done, pending = yield from asyncio.wait( [ disconnect_waiter, subscribe_waiter, unsubscribe_waiter, wait_deliver ], return_when=asyncio.FIRST_COMPLETED, loop=self._loop) if disconnect_waiter in done: result = disconnect_waiter.result() self.logger.debug("%s Result from wait_diconnect: %s" % (client_session.client_id, result)) if result is None: self.logger.debug("Will flag: %s" % client_session.will_flag) # Connection closed anormally, send will message if client_session.will_flag: self.logger.debug( "Client %s disconnected abnormally, sending will message" % format_client_message(client_session)) yield from self._broadcast_message( client_session, client_session.will_topic, client_session.will_message, client_session.will_qos) if client_session.will_retain: self.retain_message( client_session, client_session.will_topic, client_session.will_message, client_session.will_qos) self.logger.debug("%s Disconnecting session" % client_session.client_id) yield from self._stop_handler(handler) client_session.transitions.disconnect() yield from self.plugins_manager.fire_event( EVENT_BROKER_CLIENT_DISCONNECTED, client_id=client_session.client_id) connected = False if unsubscribe_waiter in done: self.logger.debug("%s handling unsubscription" % client_session.client_id) unsubscription = unsubscribe_waiter.result() for topic in unsubscription['topics']: self._del_subscription(topic, client_session) yield from self.plugins_manager.fire_event( EVENT_BROKER_CLIENT_UNSUBSCRIBED, client_id=client_session.client_id, topic=topic) yield from handler.mqtt_acknowledge_unsubscription( unsubscription['packet_id']) unsubscribe_waiter = asyncio.Task( handler.get_next_pending_unsubscription(), loop=self._loop) if subscribe_waiter in done: self.logger.debug("%s handling subscription" % client_session.client_id) subscriptions = subscribe_waiter.result() return_codes = [] for subscription in subscriptions['topics']: result = yield from self.add_subscription( subscription, client_session) return_codes.append(result) yield from handler.mqtt_acknowledge_subscription( subscriptions['packet_id'], return_codes) for index, subscription in enumerate( subscriptions['topics']): if return_codes[index] != 0x80: yield from self.plugins_manager.fire_event( EVENT_BROKER_CLIENT_SUBSCRIBED, client_id=client_session.client_id, topic=subscription[0], qos=subscription[1]) yield from self.publish_retained_messages_for_subscription( subscription, client_session) subscribe_waiter = asyncio.Task( handler.get_next_pending_subscription(), loop=self._loop) self.logger.debug(repr(self._subscriptions)) if wait_deliver in done: if self.logger.isEnabledFor(logging.DEBUG): self.logger.debug("%s handling message delivery" % client_session.client_id) app_message = wait_deliver.result() if not app_message.topic: self.logger.warning( "[MQTT-4.7.3-1] - %s invalid TOPIC sent in PUBLISH message, closing connection" % client_session.client_id) break if "#" in app_message.topic or "+" in app_message.topic: self.logger.warning( "[MQTT-3.3.2-2] - %s invalid TOPIC sent in PUBLISH message, closing connection" % client_session.client_id) break if app_message.topic == "registration": if client_session.username: self.logger.error( "User not anonymous. Registration is only allowed for anonymous users" ) break registered_username, registered_device = yield from self.register( data=app_message.data) if (registered_username and registered_device): topics = dict() topics[ 'acl_publish_all'] = self.get_default_user_topics( registered_username ) + [ f"{registered_username}/{registered_device}/#" ] topics['acl_subscribe_all'] = [] topics['acl_publish'] = {registered_device: []} topics['acl_subscribe'] = { registered_device: [ f"{registered_username}/{registered_device}/#" ] } yield from self.add_acl(registered_username, registered_device, topics) break else: permitted = yield from self.topic_filtering( client_session, topic=app_message.topic, publish=True) if not permitted: return 0x80 username = client_session.username.split("-")[0] client_deviceid = client_session.username.split("-")[0] if app_message.topic == f"{username}/config": try: config_query = str(app_message.data, 'UTF-8').split(" ") callback = config_query[0] args = config_query[1:] if callback == "add_device": # username/config add_device deviceid devicekey deviceid = args[0] devicekey = args[1] username, deviceid = yield from self.add_device( username, deviceid, devicekey) if (username and deviceid): topics = dict() topics['acl_publish_all'] = [ f"{username}/{deviceid}/#" ] topics['acl_subscribe_all'] = [] topics['acl_publish'] = {deviceid: []} topics['acl_subscribe'] = { deviceid: [f"{username}/{deviceid}/#"] } yield from self.add_acl( username, deviceid, topics) elif callback == "add_acl": # username/config add_acl publish/subscribe all/deviceid topic pubsub = args[0] deviceid = args[1] topic = args[2] if (topic.split('/')[0] != username): self.logger.error( "User attempting write to ACL outside namespace" ) break # TODO: what should the perms for this be? topics = dict() topics['acl_publish_all'] = [] topics['acl_subscribe_all'] = [] topics['acl_publish'] = {} topics['acl_subscribe'] = {} if (pubsub == "publish"): if (deviceid == "all"): topics['acl_publish_all'].append( topic) else: topics['acl_publish'][deviceid] = [ topic ] elif (pubsub == "subscribe"): if (deviceid == "all"): topics['acl_subscribe_all'].append( topic) else: topics['acl_subscribe'][ deviceid] = [topic] yield from self.add_acl( username, client_deviceid, topics) else: self.logger.info("Command not supported!") except IndexError: self.logger.error( "Wrong config callback format") break yield from self.plugins_manager.fire_event( EVENT_BROKER_MESSAGE_RECEIVED, client_id=client_session.client_id, message=app_message) yield from self._broadcast_message( client_session, app_message.topic, app_message.data) if app_message.publish_packet.retain_flag: self.retain_message(client_session, app_message.topic, app_message.data, app_message.qos) wait_deliver = asyncio.Task( handler.mqtt_deliver_next_message(), loop=self._loop) except asyncio.CancelledError: self.logger.debug("Client loop cancelled") break disconnect_waiter.cancel() subscribe_waiter.cancel() unsubscribe_waiter.cancel() wait_deliver.cancel() self.logger.debug("%s Client disconnected" % client_session.client_id) server.release_connection()
def client_connected(self, listener_name, reader: ReaderAdapter, writer: WriterAdapter): # Wait for connection available on listener server = self._servers.get(listener_name, None) if not server: raise BrokerException("Invalid listener name '%s'" % listener_name) yield from server.acquire_connection() remote_address, remote_port = writer.get_peer_info() self.logger.info("Connection from %s:%d on listener '%s'" % (remote_address, remote_port, listener_name)) # Wait for first packet and expect a CONNECT try: handler, client_session = yield from BrokerProtocolHandler.init_from_connect(reader, writer, self.plugins_manager, loop=self._loop) except HBMQTTException as exc: self.logger.warning("[MQTT-3.1.0-1] %s: Can't read first packet an CONNECT: %s" % (format_client_message(address=remote_address, port=remote_port), exc)) #yield from writer.close() self.logger.debug("Connection closed") return except MQTTException as me: self.logger.error('Invalid connection from %s : %s' % (format_client_message(address=remote_address, port=remote_port), me)) yield from writer.close() self.logger.debug("Connection closed") return if client_session.clean_session: # Delete existing session and create a new one if client_session.client_id is not None and client_session.client_id != "": self.delete_session(client_session.client_id) else: client_session.client_id = gen_client_id() client_session.parent = 0 else: # Get session from cache if client_session.client_id in self._sessions: self.logger.debug("Found old session %s" % repr(self._sessions[client_session.client_id])) (client_session, h) = self._sessions[client_session.client_id] client_session.parent = 1 else: client_session.parent = 0 if client_session.keep_alive > 0: client_session.keep_alive += self.config['timeout-disconnect-delay'] self.logger.debug("Keep-alive timeout=%d" % client_session.keep_alive) handler.attach(client_session, reader, writer) self._sessions[client_session.client_id] = (client_session, handler) authenticated = yield from self.authenticate(client_session, self.listeners_config[listener_name]) if not authenticated: yield from writer.close() server.release_connection() # Delete client from connections list return while True: try: client_session.transitions.connect() break except (MachineError, ValueError): # Backwards compat: MachineError is raised by transitions < 0.5.0. self.logger.warning("Client %s is reconnecting too quickly, make it wait" % client_session.client_id) # Wait a bit may be client is reconnecting too fast yield from asyncio.sleep(1, loop=self._loop) yield from handler.mqtt_connack_authorize(authenticated) yield from self.plugins_manager.fire_event(EVENT_BROKER_CLIENT_CONNECTED, client_id=client_session.client_id) self.logger.debug("%s Start messages handling" % client_session.client_id) yield from handler.start() self.logger.debug("Retained messages queue size: %d" % client_session.retained_messages.qsize()) yield from self.publish_session_retained_messages(client_session) # Init and start loop for handling client messages (publish, subscribe/unsubscribe, disconnect) disconnect_waiter = asyncio.async(handler.wait_disconnect(), loop=self._loop) subscribe_waiter = asyncio.async(handler.get_next_pending_subscription(), loop=self._loop) unsubscribe_waiter = asyncio.async(handler.get_next_pending_unsubscription(), loop=self._loop) wait_deliver = asyncio.async(handler.mqtt_deliver_next_message(), loop=self._loop) connected = True while connected: try: done, pending = yield from asyncio.wait( [disconnect_waiter, subscribe_waiter, unsubscribe_waiter, wait_deliver], return_when=asyncio.FIRST_COMPLETED, loop=self._loop) if disconnect_waiter in done: result = disconnect_waiter.result() self.logger.debug("%s Result from wait_diconnect: %s" % (client_session.client_id, result)) if result is None: self.logger.debug("Will flag: %s" % client_session.will_flag) # Connection closed anormally, send will message if client_session.will_flag: self.logger.debug("Client %s disconnected abnormally, sending will message" % format_client_message(client_session)) yield from self._broadcast_message( client_session, client_session.will_topic, client_session.will_message, client_session.will_qos) if client_session.will_retain: self.retain_message(client_session, client_session.will_topic, client_session.will_message, client_session.will_qos) self.logger.debug("%s Disconnecting session" % client_session.client_id) yield from self._stop_handler(handler) client_session.transitions.disconnect() yield from self.plugins_manager.fire_event(EVENT_BROKER_CLIENT_DISCONNECTED, client_id=client_session.client_id) connected = False if unsubscribe_waiter in done: self.logger.debug("%s handling unsubscription" % client_session.client_id) unsubscription = unsubscribe_waiter.result() for topic in unsubscription['topics']: self._del_subscription(topic, client_session) yield from self.plugins_manager.fire_event( EVENT_BROKER_CLIENT_UNSUBSCRIBED, client_id=client_session.client_id, topic=topic) yield from handler.mqtt_acknowledge_unsubscription(unsubscription['packet_id']) unsubscribe_waiter = asyncio.Task(handler.get_next_pending_unsubscription(), loop=self._loop) if subscribe_waiter in done: self.logger.debug("%s handling subscription" % client_session.client_id) subscriptions = subscribe_waiter.result() return_codes = [] for subscription in subscriptions['topics']: result = yield from self.add_subscription(subscription, client_session) return_codes.append(result) yield from handler.mqtt_acknowledge_subscription(subscriptions['packet_id'], return_codes) for index, subscription in enumerate(subscriptions['topics']): if return_codes[index] != 0x80: yield from self.plugins_manager.fire_event( EVENT_BROKER_CLIENT_SUBSCRIBED, client_id=client_session.client_id, topic=subscription[0], qos=subscription[1]) yield from self.publish_retained_messages_for_subscription(subscription, client_session) subscribe_waiter = asyncio.Task(handler.get_next_pending_subscription(), loop=self._loop) self.logger.debug(repr(self._subscriptions)) if wait_deliver in done: if self.logger.isEnabledFor(logging.DEBUG): self.logger.debug("%s handling message delivery" % client_session.client_id) app_message = wait_deliver.result() if not app_message.topic: self.logger.warning("[MQTT-4.7.3-1] - %s invalid TOPIC sent in PUBLISH message, closing connection" % client_session.client_id) break if "#" in app_message.topic or "+" in app_message.topic: self.logger.warning("[MQTT-3.3.2-2] - %s invalid TOPIC sent in PUBLISH message, closing connection" % client_session.client_id) break yield from self.plugins_manager.fire_event(EVENT_BROKER_MESSAGE_RECEIVED, client_id=client_session.client_id, message=app_message) yield from self._broadcast_message(client_session, app_message.topic, app_message.data) if app_message.publish_packet.retain_flag: self.retain_message(client_session, app_message.topic, app_message.data, app_message.qos) wait_deliver = asyncio.Task(handler.mqtt_deliver_next_message(), loop=self._loop) except asyncio.CancelledError: self.logger.debug("Client loop cancelled") break disconnect_waiter.cancel() subscribe_waiter.cancel() unsubscribe_waiter.cancel() wait_deliver.cancel() self.logger.debug("%s Client disconnected" % client_session.client_id) server.release_connection()
def client_connected(self, listener_name, reader: ReaderAdapter, writer: WriterAdapter): # Wait for connection available on listener server = self._servers.get(listener_name, None) if not server: raise BrokerException("Invalid listener name '%s'" % listener_name) yield from server.acquire_connection() remote_address, remote_port = writer.get_peer_info() self.logger.info("Connection from %s:%d on listener '%s'" % (remote_address, remote_port, listener_name)) # Wait for first packet and expect a CONNECT try: handler, client_session = yield from BrokerProtocolHandler.init_from_connect(reader, writer, self.plugins_manager, loop=self._loop) except HBMQTTException as exc: self.logger.warn("[MQTT-3.1.0-1] %s: Can't read first packet an CONNECT: %s" % (format_client_message(address=remote_address, port=remote_port), exc)) yield from writer.close() self.logger.debug("Connection closed") return except MQTTException as me: self.logger.error('Invalid connection from %s : %s' % (format_client_message(address=remote_address, port=remote_port), me)) yield from writer.close() self.logger.debug("Connection closed") return if client_session.clean_session: # Delete existing session and create a new one if client_session.client_id is not None: self.delete_session(client_session.client_id) else: client_session.client_id = gen_client_id() client_session.parent = 0 else: # Get session from cache if client_session.client_id in self._sessions: self.logger.debug("Found old session %s" % repr(self._sessions[client_session.client_id])) (client_session,h) = self._sessions[client_session.client_id] client_session.parent = 1 else: client_session.parent = 0 if client_session.keep_alive > 0: client_session.keep_alive += self.config['timeout-disconnect-delay'] self.logger.debug("Keep-alive timeout=%d" % client_session.keep_alive) handler.attach(client_session, reader, writer) self._sessions[client_session.client_id] = (client_session, handler) authenticated = yield from self.authenticate(client_session, self.listeners_config[listener_name]) if not authenticated: yield from writer.close() return while True: try: client_session.transitions.connect() break except MachineError: self.logger.warning("Client %s is reconnecting too quickly, make it wait" % client_session.client_id) # Wait a bit may be client is reconnecting too fast yield from asyncio.sleep(1, loop=self._loop) yield from handler.mqtt_connack_authorize(authenticated) yield from self.plugins_manager.fire_event(EVENT_BROKER_CLIENT_CONNECTED, client_id=client_session.client_id) self.logger.debug("%s Start messages handling" % client_session.client_id) yield from handler.start() self.logger.debug("Retained messages queue size: %d" % client_session.retained_messages.qsize()) yield from self.publish_session_retained_messages(client_session) # Init and start loop for handling client messages (publish, subscribe/unsubscribe, disconnect) disconnect_waiter = ensure_future(handler.wait_disconnect(), loop=self._loop) subscribe_waiter = ensure_future(handler.get_next_pending_subscription(), loop=self._loop) unsubscribe_waiter = ensure_future(handler.get_next_pending_unsubscription(), loop=self._loop) wait_deliver = ensure_future(handler.mqtt_deliver_next_message(), loop=self._loop) connected = True while connected: try: done, pending = yield from asyncio.wait( [disconnect_waiter, subscribe_waiter, unsubscribe_waiter, wait_deliver], return_when=asyncio.FIRST_COMPLETED, loop=self._loop) if disconnect_waiter in done: result = disconnect_waiter.result() self.logger.debug("%s Result from wait_diconnect: %s" % (client_session.client_id, result)) if result is None: self.logger.debug("Will flag: %s" % client_session.will_flag) # Connection closed anormally, send will message if client_session.will_flag: self.logger.debug("Client %s disconnected abnormally, sending will message" % format_client_message(client_session)) yield from self._broadcast_message( client_session, client_session.will_topic, client_session.will_message, client_session.will_qos) if client_session.will_retain: self.retain_message(client_session, client_session.will_topic, client_session.will_message, client_session.will_qos) self.logger.debug("%s Disconnecting session" % client_session.client_id) yield from self._stop_handler(handler) client_session.transitions.disconnect() yield from self.plugins_manager.fire_event(EVENT_BROKER_CLIENT_DISCONNECTED, client_id=client_session.client_id) connected = False if unsubscribe_waiter in done: self.logger.debug("%s handling unsubscription" % client_session.client_id) unsubscription = unsubscribe_waiter.result() for topic in unsubscription['topics']: self._del_subscription(topic, client_session) yield from self.plugins_manager.fire_event( EVENT_BROKER_CLIENT_UNSUBSCRIBED, client_id=client_session.client_id, topic=topic) yield from handler.mqtt_acknowledge_unsubscription(unsubscription['packet_id']) unsubscribe_waiter = asyncio.Task(handler.get_next_pending_unsubscription(), loop=self._loop) if subscribe_waiter in done: self.logger.debug("%s handling subscription" % client_session.client_id) subscriptions = subscribe_waiter.result() return_codes = [] for subscription in subscriptions['topics']: return_codes.append(self.add_subscription(subscription, client_session)) yield from handler.mqtt_acknowledge_subscription(subscriptions['packet_id'], return_codes) for index, subscription in enumerate(subscriptions['topics']): if return_codes[index] != 0x80: yield from self.plugins_manager.fire_event( EVENT_BROKER_CLIENT_SUBSCRIBED, client_id=client_session.client_id, topic=subscription[0], qos=subscription[1]) yield from self.publish_retained_messages_for_subscription(subscription, client_session) subscribe_waiter = asyncio.Task(handler.get_next_pending_subscription(), loop=self._loop) self.logger.debug(repr(self._subscriptions)) if wait_deliver in done: if self.logger.isEnabledFor(logging.DEBUG): self.logger.debug("%s handling message delivery" % client_session.client_id) app_message = wait_deliver.result() yield from self.plugins_manager.fire_event(EVENT_BROKER_MESSAGE_RECEIVED, client_id=client_session.client_id, message=app_message) yield from self._broadcast_message(client_session, app_message.topic, app_message.data) if app_message.publish_packet.retain_flag: self.retain_message(client_session, app_message.topic, app_message.data, app_message.qos) wait_deliver = asyncio.Task(handler.mqtt_deliver_next_message(), loop=self._loop) except asyncio.CancelledError: self.logger.debug("Client loop cancelled") break disconnect_waiter.cancel() subscribe_waiter.cancel() unsubscribe_waiter.cancel() wait_deliver.cancel() self.logger.debug("%s Client disconnected" % client_session.client_id) server.release_connection()