mirror of
https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
744 lines
28 KiB
Python
744 lines
28 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Created on Fri Dec 25 21:25:14 2020
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@author: DJ2LS
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# GET COMMANDS
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# "command" : "..."
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# SET COMMANDS
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# "command" : "..."
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# "parameter" : " ..."
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# DATA COMMANDS
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# "command" : "..."
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# "type" : "..."
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# "dxcallsign" : "..."
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# "data" : "..."
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"""
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import atexit
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import base64
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import queue
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import socketserver
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import sys
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import threading
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import time
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import helpers
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import static
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import structlog
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import ujson as json
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from exceptions import NoCallsign
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from queues import DATA_QUEUE_TRANSMIT, RX_BUFFER
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SOCKET_QUEUE = queue.Queue()
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DAEMON_QUEUE = queue.Queue()
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CONNECTED_CLIENTS = set()
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CLOSE_SIGNAL = False
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log = structlog.get_logger("sock")
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class ThreadedTCPServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
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"""
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the socket handler base class
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"""
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pass
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class ThreadedTCPRequestHandler(socketserver.StreamRequestHandler):
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""" """
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connection_alive = False
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connection_alive = False
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log = structlog.get_logger("ThreadedTCPRequestHandler")
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def send_to_client(self):
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"""
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function called by socket handler
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send data to a network client if available
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"""
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tempdata = b""
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while self.connection_alive and not CLOSE_SIGNAL:
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# send tnc state as network stream
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# check server port against daemon port and send corresponding data
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if self.server.server_address[1] == static.PORT and not static.TNCSTARTED:
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data = send_tnc_state()
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if data != tempdata:
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tempdata = data
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SOCKET_QUEUE.put(data)
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else:
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data = send_daemon_state()
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if data != tempdata:
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tempdata = data
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SOCKET_QUEUE.put(data)
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time.sleep(0.5)
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while not SOCKET_QUEUE.empty():
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data = SOCKET_QUEUE.get()
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sock_data = bytes(data, "utf-8")
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sock_data += b"\n" # append line limiter
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# send data to all clients
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# try:
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for client in CONNECTED_CLIENTS:
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try:
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client.send(sock_data)
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except Exception as err:
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self.log.info("[SCK] Connection lost", e=err)
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self.connection_alive = False
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# we want to transmit scatter data only once to reduce network traffic
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static.SCATTER = []
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# we want to display INFO messages only once
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static.INFO = []
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# self.request.sendall(sock_data)
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time.sleep(0.15)
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def receive_from_client(self):
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"""
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function which is called by the socket handler
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it processes the data which is returned by a client
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"""
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data = bytes()
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while self.connection_alive and not CLOSE_SIGNAL:
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try:
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chunk = self.request.recv(1024)
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data += chunk
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if chunk == b"":
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# print("connection broken. Closing...")
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self.connection_alive = False
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if data.startswith(b"{") and data.endswith(b"}\n"):
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# split data by \n if we have multiple commands in socket buffer
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data = data.split(b"\n")
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# remove empty data
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data.remove(b"")
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# iterate thorugh data list
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for commands in data:
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if self.server.server_address[1] == static.PORT:
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process_tnc_commands(commands)
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else:
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process_daemon_commands(commands)
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# wait some time between processing multiple commands
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# this is only a first test to avoid doubled transmission
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# we might improve this by only processing one command or
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# doing some kind of selection to determin which commands need to be dropped
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# and which one can be processed during a running transmission
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time.sleep(3)
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# finally delete our rx buffer to be ready for new commands
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data = bytes()
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except Exception as err:
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self.log.info(
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"[SCK] Connection closed",
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ip=self.client_address[0],
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port=self.client_address[1],
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e=err,
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)
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self.connection_alive = False
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def handle(self):
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"""
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socket handler
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"""
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CONNECTED_CLIENTS.add(self.request)
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self.log.debug(
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"[SCK] Client connected",
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ip=self.client_address[0],
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port=self.client_address[1],
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)
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self.connection_alive = True
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self.sendThread = threading.Thread(
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target=self.send_to_client, args=[], daemon=True
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)
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self.sendThread.start()
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self.receiveThread = threading.Thread(
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target=self.receive_from_client, args=[], daemon=True
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)
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self.receiveThread.start()
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# keep connection alive until we close it
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while self.connection_alive and not CLOSE_SIGNAL:
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time.sleep(1)
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def finish(self):
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""" """
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self.log.warning(
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"[SCK] Closing client socket",
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ip=self.client_address[0],
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port=self.client_address[1],
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)
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try:
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CONNECTED_CLIENTS.remove(self.request)
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except Exception:
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self.log.warning(
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"[SCK] client connection already removed from client list",
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client=self.request,
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)
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def process_tnc_commands(data):
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"""
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process tnc commands
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Args:
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data:
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Returns:
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"""
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log = structlog.get_logger("process_tnc_commands")
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# we need to do some error handling in case of socket timeout or decoding issue
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try:
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# convert data to json object
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received_json = json.loads(data)
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log.debug("[SCK] CMD", command=received_json)
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# SET TX AUDIO LEVEL -----------------------------------------------------
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if (
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received_json["type"] == "set"
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and received_json["command"] == "tx_audio_level"
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):
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try:
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static.TX_AUDIO_LEVEL = int(received_json["value"])
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command_response("tx_audio_level", True)
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except Exception as err:
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command_response("tx_audio_level", False)
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log.warning(
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"[SCK] TX audio command execution error",
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e=err,
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command=received_json,
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)
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# TRANSMIT TEST FRAME ----------------------------------------------------
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if (
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received_json["type"] == "set"
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and received_json["command"] == "send_test_frame"
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):
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try:
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DATA_QUEUE_TRANSMIT.put(["SEND_TEST_FRAME"])
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command_response("send_test_frame", True)
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except Exception as err:
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command_response("send_test_frame", False)
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log.warning(
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"[SCK] Send test frame command execution error",
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e=err,
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command=received_json,
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)
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# CQ CQ CQ -----------------------------------------------------
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if received_json["command"] == "cqcqcq":
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try:
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DATA_QUEUE_TRANSMIT.put(["CQ"])
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command_response("cqcqcq", True)
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except Exception as err:
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command_response("cqcqcq", False)
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log.warning(
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"[SCK] CQ command execution error", e=err, command=received_json
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)
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# START_BEACON -----------------------------------------------------
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if received_json["command"] == "start_beacon":
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try:
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static.BEACON_STATE = True
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interval = int(received_json["parameter"])
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DATA_QUEUE_TRANSMIT.put(["BEACON", interval, True])
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command_response("start_beacon", True)
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except Exception as err:
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command_response("start_beacon", False)
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log.warning(
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"[SCK] Start beacon command execution error",
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e=err,
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command=received_json,
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)
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# STOP_BEACON -----------------------------------------------------
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if received_json["command"] == "stop_beacon":
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try:
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log.warning("[SCK] Stopping beacon!")
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static.BEACON_STATE = False
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DATA_QUEUE_TRANSMIT.put(["BEACON", None, False])
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command_response("stop_beacon", True)
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except Exception as err:
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command_response("stop_beacon", False)
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log.warning(
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"[SCK] Stop beacon command execution error",
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e=err,
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command=received_json,
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)
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# PING ----------------------------------------------------------
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if received_json["type"] == "ping" and received_json["command"] == "ping":
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# send ping frame and wait for ACK
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try:
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dxcallsign = received_json["dxcallsign"]
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if not str(dxcallsign).strip():
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raise NoCallsign
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# additional step for beeing sure our callsign is correctly
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# in case we are not getting a station ssid
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# then we are forcing a station ssid = 0
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dxcallsign = helpers.callsign_to_bytes(dxcallsign)
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dxcallsign = helpers.bytes_to_callsign(dxcallsign)
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DATA_QUEUE_TRANSMIT.put(["PING", dxcallsign])
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command_response("ping", True)
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except NoCallsign:
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command_response("ping", False)
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log.warning("[SCK] callsign required for ping", command=received_json)
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except Exception as err:
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command_response("ping", False)
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log.warning(
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"[SCK] PING command execution error", e=err, command=received_json
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)
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# CONNECT ----------------------------------------------------------
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if received_json["type"] == "arq" and received_json["command"] == "connect":
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static.BEACON_PAUSE = True
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# send ping frame and wait for ACK
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try:
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dxcallsign = received_json["dxcallsign"]
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# additional step for beeing sure our callsign is correctly
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# in case we are not getting a station ssid
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# then we are forcing a station ssid = 0
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dxcallsign = helpers.callsign_to_bytes(dxcallsign)
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dxcallsign = helpers.bytes_to_callsign(dxcallsign)
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static.DXCALLSIGN = dxcallsign
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static.DXCALLSIGN_CRC = helpers.get_crc_24(static.DXCALLSIGN)
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DATA_QUEUE_TRANSMIT.put(["CONNECT", dxcallsign])
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command_response("connect", True)
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except Exception as err:
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command_response("connect", False)
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log.warning(
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"[SCK] Connect command execution error",
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e=err,
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command=received_json,
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)
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# DISCONNECT ----------------------------------------------------------
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if received_json["type"] == "arq" and received_json["command"] == "disconnect":
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try:
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DATA_QUEUE_TRANSMIT.put(["DISCONNECT"])
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# set early disconnecting state so we can interrupt connection attempts
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static.ARQ_SESSION_STATE = "disconnecting"
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command_response("disconnect", True)
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except Exception as err:
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command_response("disconnect", False)
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log.warning(
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"[SCK] Disconnect command execution error",
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e=err,
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command=received_json,
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)
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# TRANSMIT RAW DATA -------------------------------------------
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if received_json["type"] == "arq" and received_json["command"] == "send_raw":
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static.BEACON_PAUSE = True
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try:
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if not static.ARQ_SESSION:
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dxcallsign = received_json["parameter"][0]["dxcallsign"]
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# additional step for beeing sure our callsign is correctly
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# in case we are not getting a station ssid
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# then we are forcing a station ssid = 0
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dxcallsign = helpers.callsign_to_bytes(dxcallsign)
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dxcallsign = helpers.bytes_to_callsign(dxcallsign)
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static.DXCALLSIGN = dxcallsign
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static.DXCALLSIGN_CRC = helpers.get_crc_24(static.DXCALLSIGN)
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command_response("send_raw", True)
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else:
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dxcallsign = static.DXCALLSIGN
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static.DXCALLSIGN_CRC = helpers.get_crc_24(static.DXCALLSIGN)
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mode = int(received_json["parameter"][0]["mode"])
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n_frames = int(received_json["parameter"][0]["n_frames"])
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base64data = received_json["parameter"][0]["data"]
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# check if specific callsign is set with different SSID than the TNC is initialized
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try:
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mycallsign = received_json["parameter"][0]["mycallsign"]
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except Exception:
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mycallsign = static.MYCALLSIGN
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# check if transmission uuid provided else set no-uuid
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try:
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arq_uuid = received_json["uuid"]
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except Exception:
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arq_uuid = "no-uuid"
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if len(base64data) % 4:
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raise TypeError
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binarydata = base64.b64decode(base64data)
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DATA_QUEUE_TRANSMIT.put(
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["ARQ_RAW", binarydata, mode, n_frames, arq_uuid, mycallsign]
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)
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except Exception as err:
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command_response("send_raw", False)
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log.warning(
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"[SCK] Send raw command execution error",
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e=err,
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command=received_json,
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)
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# STOP TRANSMISSION ----------------------------------------------------------
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if (
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received_json["type"] == "arq"
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and received_json["command"] == "stop_transmission"
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):
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try:
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if static.TNC_STATE == "BUSY" or static.ARQ_STATE:
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DATA_QUEUE_TRANSMIT.put(["STOP"])
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log.warning("[SCK] Stopping transmission!")
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static.TNC_STATE = "IDLE"
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static.ARQ_STATE = False
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command_response("stop_transmission", True)
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except Exception as err:
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command_response("stop_transmission", False)
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log.warning(
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"[SCK] STOP command execution error", e=err, command=received_json
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)
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if received_json["type"] == "get" and received_json["command"] == "rx_buffer":
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try:
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output = {
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"command": "rx_buffer",
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"data-array": [],
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}
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if not RX_BUFFER.empty():
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for _buffer_length in range(RX_BUFFER.qsize()):
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base64_data = RX_BUFFER.queue[_buffer_length][4]
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output["data-array"].append(
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{
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"uuid": RX_BUFFER.queue[_buffer_length][0],
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"timestamp": RX_BUFFER.queue[_buffer_length][1],
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"dxcallsign": str(RX_BUFFER.queue[_buffer_length][2], "utf-8"),
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"dxgrid": str(RX_BUFFER.queue[_buffer_length][3], "utf-8"),
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"data": base64_data,
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}
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)
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jsondata = json.dumps(output)
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# self.request.sendall(bytes(jsondata, encoding))
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SOCKET_QUEUE.put(jsondata)
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command_response("rx_buffer", True)
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except Exception as err:
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command_response("rx_buffer", False)
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log.warning(
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"[SCK] Send RX buffer command execution error",
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e=err,
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command=received_json,
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)
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if (
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received_json["type"] == "set"
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and received_json["command"] == "del_rx_buffer"
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):
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try:
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RX_BUFFER.queue.clear()
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command_response("del_rx_buffer", True)
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except Exception as err:
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command_response("del_rx_buffer", False)
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log.warning(
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"[SCK] Delete RX buffer command execution error",
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e=err,
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command=received_json,
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)
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# exception, if JSON cant be decoded
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except Exception as err:
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log.error("[SCK] JSON decoding error", e=err)
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def send_tnc_state():
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"""
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send the tnc state to network
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"""
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encoding = "utf-8"
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output = {
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"command": "tnc_state",
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"ptt_state": str(static.PTT_STATE),
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"tnc_state": str(static.TNC_STATE),
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"arq_state": str(static.ARQ_STATE),
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"arq_session": str(static.ARQ_SESSION),
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"arq_session_state": str(static.ARQ_SESSION_STATE),
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"audio_rms": str(static.AUDIO_RMS),
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"snr": str(static.SNR),
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"frequency": str(static.HAMLIB_FREQUENCY),
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"speed_level": str(static.ARQ_SPEED_LEVEL),
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"mode": str(static.HAMLIB_MODE),
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"bandwidth": str(static.HAMLIB_BANDWIDTH),
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"fft": str(static.FFT),
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"channel_busy": str(static.CHANNEL_BUSY),
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"scatter": static.SCATTER,
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"rx_buffer_length": str(RX_BUFFER.qsize()),
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"rx_msg_buffer_length": str(len(static.RX_MSG_BUFFER)),
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"arq_bytes_per_minute": str(static.ARQ_BYTES_PER_MINUTE),
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"arq_bytes_per_minute_burst": str(static.ARQ_BYTES_PER_MINUTE_BURST),
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"arq_compression_factor": str(static.ARQ_COMPRESSION_FACTOR),
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"arq_transmission_percent": str(static.ARQ_TRANSMISSION_PERCENT),
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"total_bytes": str(static.TOTAL_BYTES),
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"beacon_state": str(static.BEACON_STATE),
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"stations": [],
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"mycallsign": str(static.MYCALLSIGN, encoding),
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"dxcallsign": str(static.DXCALLSIGN, encoding),
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"dxgrid": str(static.DXGRID, encoding),
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}
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# add heard stations to heard stations object
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for heard in static.HEARD_STATIONS:
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output["stations"].append(
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{
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"dxcallsign": str(heard[0], "utf-8"),
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"dxgrid": str(heard[1], "utf-8"),
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"timestamp": heard[2],
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"datatype": heard[3],
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"snr": heard[4],
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"offset": heard[5],
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"frequency": heard[6],
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}
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)
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return json.dumps(output)
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# This appears to have been taken out of a class, but is never called because
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# the `self.request.sendall` call is a syntax error as `self` is undefined and
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# we don't see errors in use.
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def process_daemon_commands(data):
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"""
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process daemon commands
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Args:
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data:
|
|
|
|
Returns:
|
|
|
|
"""
|
|
log = structlog.get_logger("process_daemon_commands")
|
|
|
|
# convert data to json object
|
|
received_json = json.loads(data)
|
|
log.debug("[SCK] CMD", command=received_json)
|
|
if received_json["type"] == "set" and received_json["command"] == "mycallsign":
|
|
try:
|
|
callsign = received_json["parameter"]
|
|
|
|
if bytes(callsign, "utf-8") == b"":
|
|
self.request.sendall(b"INVALID CALLSIGN")
|
|
log.warning(
|
|
"[SCK] SET MYCALL FAILED",
|
|
call=static.MYCALLSIGN,
|
|
crc=static.MYCALLSIGN_CRC.hex(),
|
|
)
|
|
else:
|
|
static.MYCALLSIGN = bytes(callsign, "utf-8")
|
|
static.MYCALLSIGN_CRC = helpers.get_crc_24(static.MYCALLSIGN)
|
|
|
|
command_response("mycallsign", True)
|
|
log.info(
|
|
"[SCK] SET MYCALL",
|
|
call=static.MYCALLSIGN,
|
|
crc=static.MYCALLSIGN_CRC.hex(),
|
|
)
|
|
except Exception as err:
|
|
command_response("mycallsign", False)
|
|
log.warning("[SCK] command execution error", e=err, command=received_json)
|
|
|
|
if received_json["type"] == "set" and received_json["command"] == "mygrid":
|
|
try:
|
|
mygrid = received_json["parameter"]
|
|
|
|
if bytes(mygrid, "utf-8") == b"":
|
|
self.request.sendall(b"INVALID GRID")
|
|
command_response("mygrid", False)
|
|
else:
|
|
static.MYGRID = bytes(mygrid, "utf-8")
|
|
log.info("[SCK] SET MYGRID", grid=static.MYGRID)
|
|
command_response("mygrid", True)
|
|
except Exception as err:
|
|
command_response("mygrid", False)
|
|
log.warning("[SCK] command execution error", e=err, command=received_json)
|
|
|
|
if (
|
|
received_json["type"] == "set"
|
|
and received_json["command"] == "start_tnc"
|
|
and not static.TNCSTARTED
|
|
):
|
|
try:
|
|
mycall = str(received_json["parameter"][0]["mycall"])
|
|
mygrid = str(received_json["parameter"][0]["mygrid"])
|
|
rx_audio = str(received_json["parameter"][0]["rx_audio"])
|
|
tx_audio = str(received_json["parameter"][0]["tx_audio"])
|
|
devicename = str(received_json["parameter"][0]["devicename"])
|
|
deviceport = str(received_json["parameter"][0]["deviceport"])
|
|
serialspeed = str(received_json["parameter"][0]["serialspeed"])
|
|
pttprotocol = str(received_json["parameter"][0]["pttprotocol"])
|
|
pttport = str(received_json["parameter"][0]["pttport"])
|
|
data_bits = str(received_json["parameter"][0]["data_bits"])
|
|
stop_bits = str(received_json["parameter"][0]["stop_bits"])
|
|
handshake = str(received_json["parameter"][0]["handshake"])
|
|
radiocontrol = str(received_json["parameter"][0]["radiocontrol"])
|
|
rigctld_ip = str(received_json["parameter"][0]["rigctld_ip"])
|
|
rigctld_port = str(received_json["parameter"][0]["rigctld_port"])
|
|
enable_scatter = str(received_json["parameter"][0]["enable_scatter"])
|
|
enable_fft = str(received_json["parameter"][0]["enable_fft"])
|
|
enable_fsk = str(received_json["parameter"][0]["enable_fsk"])
|
|
low_bandwidth_mode = str(
|
|
received_json["parameter"][0]["low_bandwidth_mode"]
|
|
)
|
|
tuning_range_fmin = str(received_json["parameter"][0]["tuning_range_fmin"])
|
|
tuning_range_fmax = str(received_json["parameter"][0]["tuning_range_fmax"])
|
|
tx_audio_level = str(received_json["parameter"][0]["tx_audio_level"])
|
|
respond_to_cq = str(received_json["parameter"][0]["respond_to_cq"])
|
|
rx_buffer_size = str(received_json["parameter"][0]["rx_buffer_size"])
|
|
enable_explorer = str(received_json["parameter"][0]["enable_explorer"])
|
|
|
|
# print some debugging parameters
|
|
for item in received_json["parameter"][0]:
|
|
log.debug(
|
|
f"[SCK] TNC Startup Config : {item}",
|
|
value=received_json["parameter"][0][item],
|
|
)
|
|
|
|
DAEMON_QUEUE.put(
|
|
[
|
|
"STARTTNC",
|
|
mycall,
|
|
mygrid,
|
|
rx_audio,
|
|
tx_audio,
|
|
devicename,
|
|
deviceport,
|
|
serialspeed,
|
|
pttprotocol,
|
|
pttport,
|
|
data_bits,
|
|
stop_bits,
|
|
handshake,
|
|
radiocontrol,
|
|
rigctld_ip,
|
|
rigctld_port,
|
|
enable_scatter,
|
|
enable_fft,
|
|
low_bandwidth_mode,
|
|
tuning_range_fmin,
|
|
tuning_range_fmax,
|
|
enable_fsk,
|
|
tx_audio_level,
|
|
respond_to_cq,
|
|
rx_buffer_size,
|
|
enable_explorer,
|
|
]
|
|
)
|
|
command_response("start_tnc", True)
|
|
|
|
except Exception as err:
|
|
command_response("start_tnc", False)
|
|
log.warning("[SCK] command execution error", e=err, command=received_json)
|
|
|
|
if received_json["type"] == "get" and received_json["command"] == "test_hamlib":
|
|
try:
|
|
devicename = str(received_json["parameter"][0]["devicename"])
|
|
deviceport = str(received_json["parameter"][0]["deviceport"])
|
|
serialspeed = str(received_json["parameter"][0]["serialspeed"])
|
|
pttprotocol = str(received_json["parameter"][0]["pttprotocol"])
|
|
pttport = str(received_json["parameter"][0]["pttport"])
|
|
data_bits = str(received_json["parameter"][0]["data_bits"])
|
|
stop_bits = str(received_json["parameter"][0]["stop_bits"])
|
|
handshake = str(received_json["parameter"][0]["handshake"])
|
|
radiocontrol = str(received_json["parameter"][0]["radiocontrol"])
|
|
rigctld_ip = str(received_json["parameter"][0]["rigctld_ip"])
|
|
rigctld_port = str(received_json["parameter"][0]["rigctld_port"])
|
|
|
|
DAEMON_QUEUE.put(
|
|
[
|
|
"TEST_HAMLIB",
|
|
devicename,
|
|
deviceport,
|
|
serialspeed,
|
|
pttprotocol,
|
|
pttport,
|
|
data_bits,
|
|
stop_bits,
|
|
handshake,
|
|
radiocontrol,
|
|
rigctld_ip,
|
|
rigctld_port,
|
|
]
|
|
)
|
|
command_response("test_hamlib", True)
|
|
except Exception as err:
|
|
command_response("test_hamlib", False)
|
|
log.warning("[SCK] command execution error", e=err, command=received_json)
|
|
|
|
if received_json["type"] == "set" and received_json["command"] == "stop_tnc":
|
|
try:
|
|
static.TNCPROCESS.kill()
|
|
# unregister process from atexit to avoid process zombies
|
|
atexit.unregister(static.TNCPROCESS.kill)
|
|
|
|
log.warning("[SCK] Stopping TNC")
|
|
static.TNCSTARTED = False
|
|
command_response("stop_tnc", True)
|
|
except Exception as err:
|
|
command_response("stop_tnc", False)
|
|
log.warning("[SCK] command execution error", e=err, command=received_json)
|
|
|
|
|
|
def send_daemon_state():
|
|
"""
|
|
send the daemon state to network
|
|
"""
|
|
log = structlog.get_logger("send_daemon_state")
|
|
|
|
try:
|
|
python_version = f"{str(sys.version_info[0])}.{str(sys.version_info[1])}"
|
|
|
|
output = {
|
|
"command": "daemon_state",
|
|
"daemon_state": [],
|
|
"python_version": str(python_version),
|
|
"hamlib_version": static.HAMLIB_VERSION,
|
|
"input_devices": static.AUDIO_INPUT_DEVICES,
|
|
"output_devices": static.AUDIO_OUTPUT_DEVICES,
|
|
"serial_devices": static.SERIAL_DEVICES,
|
|
#'cpu': str(psutil.cpu_percent()),
|
|
#'ram': str(psutil.virtual_memory().percent),
|
|
"version": "0.1",
|
|
}
|
|
|
|
if static.TNCSTARTED:
|
|
output["daemon_state"].append({"status": "running"})
|
|
else:
|
|
output["daemon_state"].append({"status": "stopped"})
|
|
|
|
return json.dumps(output)
|
|
except Exception as err:
|
|
log.warning("[SCK] error", e=err)
|
|
return None
|
|
|
|
|
|
def command_response(command, status):
|
|
s_status = "OK" if status else "Failed"
|
|
jsondata = {"command_response": command, "status": s_status}
|
|
data_out = json.dumps(jsondata)
|
|
SOCKET_QUEUE.put(data_out)
|